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INTERNATIONAL JOURNAL OF COMPUTER ENGINEERING &
  International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 –
  6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME
                              TECHNOLOGY (IJCET)
ISSN 0976 – 6367(Print)
ISSN 0976 – 6375(Online)
Volume 3, Issue 3, October - December (2012), pp. 94-103
                                                                                 IJCET
© IAEME: www.iaeme.com/ijcet.asp
Journal Impact Factor (2012): 3.9580 (Calculated by GISI)                    ©IAEME
www.jifactor.com




   SMART HOME SYSTEMS USING WIRELESS SENSOR NETWORK –
                A COMPARATIVE ANALYSIS
  R. Kavitha                      Dr. G. M. Nasira              Dr. N. Nachamai
  Research Scholar                Assistant Professor           Assistant Professor
  Dept. of Computer Science       Dept. of Computer Science     Dept. of Computer Science
  Christ University               Chikkam Govt. Arts College    Christ University Bangalore-29,
  Karnataka                       Tirupur, Tamil Nadu 641 602   Bangalore-29, Karnataka
  India                            India                        India
  kavitha.r@christuniversity.in     nasiragm99@yahoo.com        nachamai.m@christuniversity.in


  ABSTRACT

  The advances in the field of communication network, Wireless Sensors Network (WSN) is
  became a very interesting and challenging area of Networks. Smart home system using
  wireless sensor network technology enrich human life and helps to take care of the very old
  people easier who lives alone. Smart Home is the integration of technology and services
  through home networking for better quality of living. The smart home system consists of
  three components: physical components, control system and communication system. In this
  paper, basic structure of a smart home system and a comparative analysis of different smart
  home system with its components are discussed.

  Key Words: Smart Home, ZigBee, Sensors.

  1. INTRODUCTION

  The average age of people in India is on the rise. New challenges are arising to provide a safe
  and secure living environment for them. As per the survey done by S. Irudaya Rajan [1], by
  2050, the world population will peak to three hundred million. In that population, more
  would be elder than younger. The situation arises; where elder people live alone without
  assistance really require constant monitoring. Figure 1 shows the raising percentage of
  elderly 60 and above from 2001 to 2051.




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6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME

                                       Percentage of Elderly during the year 2001 - 2051

                          20
                                                                                   17.3
                          18
                          16                                               14.5
                          14                                        11.9
             Percentage
                          12                          9.9
                          10                8.2                                             Percentage
                                 7.5
                           8
                           6
                           4
                           2
                           0
                                2001        2011      2021          2031   2041    2051
                                                             Year



                          Figure 1. Percentage of elderly 60 and above during the year 2001 – 2051

The smart home system provides an inviolable, safe sheltered and comfortable life like in an
assisted living environment. It enhances traditional security and safety mechanism by using
intelligent monitoring and access control.
The structure of this paper is as follows. Section 2 describes basic structure of a wireless
smart home and its components. In section 3 comparative analysis of different smart home
system is discussed. The conclusion and future research direction are presented in section 4.

2. SMART HOME SYSTEM

The basic structure of a smart home system is depicted in figure 2. The smart home
integration consists of three major areas, first, the physical components (electronic devices –
sensors, actuators), second, the control system (artificial intelligence/expert system) and third,
the communication system (wired/wireless network) which connects physical components
and control system. The control system can access from home exterior through external home
network like mobile network or Internet. In a smart home system the physical components
sense the environment and pass to home control system through home sub networks and
home network. Home control system takes the decision and passes the control information to
the actuators through home network. For example, gas sensor detects the gas leakage in a
smart home and passes this message to the home control system through ZigBee, a wireless
network. Control system decides to switch off the gas valve and pass this to actuator, which
will off/close the gas valve.




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International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 –
6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME


                                                   Home Network



                                                                          Home Sub
                                                                          Network-1
         Home                   Home
         External               Control
         Network                System




                                                                          Home Sub
                                                                          Network-2



               Wireless           Smart Devices/                  Wired/Wireless
               Network            Sensors                         Network



                             Figure. 2 Basic Structure of a Smart Home System

2.1. Physical Components

The role of physical components is very important. It measures and collects the information
and shares with the control system through network. Sensors, microcontroller, actuator and
smart devices are used as physical components. Different applications use different sensors.
Table 1 lists the sensing property, sensing mode, and application of the sensors [2], [4].

Sensors observe the smart home resident’s interaction with objects such as doors, windows,
keys, and all home appliances. It recognizes activity of daily living.

                           Table 1. Sensing property, modes and their applications
  Sensing property               Sensing mode                      Sensor Applications
                          Pressure, Temperature,
Physical Properties                                    Health Safety, Energy Efficiency
                          Light, Humidity, Flow
                          Position, Angular, Velocity,
Motion and Presences
                          Acceleration, Direction,     Security, Location tracking, Falls detection
properties
                          Distance
                                                       Security and health monitoring, Pool
Biochemical Agents        Solid, Liquids, Gases
                                                       maintenance, Sprinkler efficiency
                                                       Used to identify people and objects, Volume
Others                    iButtons, Sound, Image       control, Speech recognition, Context
                                                       understanding

2.2. Control System
Control system receives the information from different sensors and classifies it for the
different types of activities. For example, the data collected from the accelerometer sensor
positioned on the body recognize actions that involve repetitive body motions like walking,
running, etc.
A number of machine learning models are used for activity recognition in smart home
application [4]. Following are some example.

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International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 –
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   •   Nave Bayes Classifiers – identify the activity that corresponds with the greatest
       probability to the set of sensor values observed.
    • Decision trees - To learn logical description of the activities.
The probabilistic sequence of sensor events are encoded using Markov models dynamic,
Bayes networks and Conditional random fields. Temporal Reasoning with a rule based
system or Neural Network with reinforcement learner or Fuzzy rules develop an automated
decision-making and control techniques.

 2.3. Communication System
The communication system is use to share the information between physical components and
control system in the smart home system. It can be wired or wireless communication. The
widely used wireless technologies are Bluetooth, WiFi, WiMAX, and ZigBee [5]. Bluetooth
is the first and popular low bandwidth wireless interface for the smart home. In the last few
years the bandwidth requirement of the smart home has increased dramatically which
introduces WiFi - a wireless local area networks technology based on the IEEE 802.11. It
covers an entire house, and the data rate is reduced to 1 MB or below at the far distance. It
consumes more power and provides low security. WiMAX provides wireless broadband
access and it is alternative to the cable connection. Due to the low cost, low power
consumption and easy integration into smart home control system ZigBee a wireless
technology become a quite suitable for smart home environment. Comparison of above
mentioned four wireless network technologies are shown in Table 2.

                           Table 2. Comparison of wireless technologies
            Protocol    Frequency                    Power                    Transmission
                                      Rate/bps                     Security
            standard     band/Hz                  consumption                   distance
Bluetooth    802.15.1     2.4G          1M           >10mW          High          10m
             802.11b,
  Wi-Fi                  2.4G/5G      11-54M         >10mW          Low          200m
             802.11g
 WiMAX        802.16      2-11G         70M          >10mW         Medium        30Km
                        868/915M,
 ZigBee      802.15.4                 20-250K        <10mW          High         100m
                           2.4G

3. COMPARATIVE ANALYSIS OF A SMART HOME SYSTEM

The comparative analysis of a smart home system using wireless sensor network is done by
classifying a study into two categories as communication system and control system. The
literature on the communication system explains more about network part of a smart home.
The literature on the control system explains more about the methods and procedures used for
monitoring and control process of a control system in a smart home. Table 3 represent the
analysis with two categories as communication system and control system. The
communication system is further divided into routing algorithm and network based
categories. The first category discusses about the routing algorithm, which is used in home
(ZigBee) network of a smart home. Second category discusses about implementation of both
internal and external home network.




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                                      Table 3. Comparative Analysis of Smart Home Systems
                                                                                                             Controlling /
  Group/                              Smart Devices    Home                        Home external                                 Future
                    Objective                                   Control System                   User GUI     Network
 Parameter                            /Sensors Used   Network                        Network                                  Enhancement
                                                                                                              Algorithm

                                                                                                             Jess / DMPR –
               Smart Home Energy        Generic                                                                                To support
      R                                                           Information                                   Disjoint
          1    management System        Sensor,       ZigBee                         Internet         -                         location
      O                                                            Extractor                                   Multipath
                 – SHEMS [6]            Actuator                                                                                 service
      U                                                                                                         Routing
      T                                                                                                        Improved
      I                                                         C/S architecture
               Development of node                                                                              routing       Apply the
      N                                                         based on socket
                and the coordinator      Node,                                                                 algorithm    whole system
      G   2                                           ZigBee    communication         GPRS            -
                  for smart home       coordinator                                                            based on the in practice and
                                                                 mechanism of
                    system [7]                                                                                  Dijkstra         test
      A                                                         TCP/IP protocol
                                                                                                               Algorithm
      L
      G           Develop a new                                                                               LQIR – Link
                                        Generic
      O          intelligent home                                                                               Quality    To support
          3                             Sensor,       ZigBee           -             Internet         -
      R        control system based                                                                            Indicator Location Based
                                        Actuator
      I            on WSN [8]                                                                                Based Routing
      T            Proposed an
                                                                                                              algorithm for
      H          improved routing
                                                                                                                 routing
      M   4          algorithm              -         ZigBee           -                -             -                             -
                                                                                                             discovery and
                combining Cluster-
                                                                                                              maintenance
               Tree and AODVjr [9]
                                                                                                                              Improving a
                  Monitoring of          IR,                                                                                  classification
                                                                Support Vector                               Classification
          5      Elderly people at    Temperature,       -                              -             -                        result using
                                                                   Machine                                    Algorithm
                    home [10]         Hygrometry                                                                                  priori
 C
                                                                                                                               knowledge
 O
 M                                                         Wi-
 M                                       Magnetic,     fi(camara-
                 Multi-sensor centric                                                                                       Convergence
 U                                     photo diode,      control
                smart sensor network                                  UMPC-Ultra                    Mobile        Only       technology
 N        6                            microphone, system)Zig                             Wi-fi
                 design using mobile                               mobile PC module               device user monitoring       with 3D
 I                                        motion,     bee (sensor-
                        device [11]                                                                                           modelling
 C                                       vibration       control
 A                                                       system
 T                    Mobile health
 I                monitoring system     Ring –type
                                                                                      HSDPA, Wi-    GUI in
 O              using wearable ring- pulse sensor,
          7                                            Bluetooth             -         Fi, Wimax,   Smart           -              -
 N                type pulse monitor smart phone,
                                                                                          GPRS      phone
                   sensor with smart ASUSP552W
 S                      phone [12]
 Y N                    Design and
 S E      8
                  implementation of      Light and
                                                         ZigBee              -            Wi-Fi
                                                                                                    Virtual
                                                                                                                    _              _
 T T               home automation Smoke sensor                                                   Home GUI
 E W                architecture [13]
 M O             Dynamic intelligent
   R                                                    Android                                                            Implementing
                home control system                                  User behavior                  Smart Classifier using
   K      9                                   -         platform                      GSM, WiFi                             the proposed
                using Android phone                                     Analysis                    phone       Database
                                                        network                                                                  idea
                            [14]
      B
                                                                                                                             Incorporate
      A                               Sensor unit for
                                                                                                                                 more
      S                                   electric                                                Monitoring
                In-House monitoring                                                                                           intelligent
      E   10                          appliance, bed ZigBee         Only monitoring In-home only software           -
                      for elders [15]                                                                                       features like
      D                                usage, water                                                  GUI
                                                                                                                             positioning
                                           usage
                                                                                                                                method
                                       Pulse sensor,
                   Implementing E-                                                                               Mixed
                                         Pressure
          11       Healthcare using                       WSN                -           Internet      -       Positioning         -
                                        sensor, fire
                        WSN [16]                                                                               Algorithm
                                           sensor
               Implementing a smart
                                       Temperature,
                   home with digital                                                              Door lock
          12                              gas, fire      ZigBee              -           Internet                   -              -
                   door lock as base                                                                 LCD
                                          sensors
                       station [17]
               Deployment of a
                                                                    activity-centered
               WSN in a living         Temperature,
          13                                             ZigBee        computing             -         -            -              -
               laboratory home        Pressure, Light
                                                                      middleware
                   Environment [18]
                                                                                                                            Updating the
                  Implement a smart    Smoke, gas,
                                                                                                                             system with
          14   home security system temperature,         ZigBee      Sending SMS          GSM          -            -
                                                                                                                              intelligent
                            [19]         biosensor
                                                                                                                           home security
  C                                                                                                              Hybrid
  O                                                                                                            Algorithm
                                                                                                                              Improved
  N                Prediction of user                                                                          (Prediction
                                                                                                                           Algorithm for
  T                  interaction – in                                Decision Tree                            Algorithm) –
          15                                  -             -                                -         -                   short memory
  R              energy management                                       method                                 Day Type
                                                                                                                            of first order
  O                 smart home [20]                                                                           Model, First
                                                                                                                           markov model
  L                                                                                                            order Semi
                                                                                                              markov Mode




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International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 –
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                 Study of
  S           psychological                                                                     Clustering    Improving an
  Y         characteristics of                               Multi agent                      algorithm for     algorithm
      16                               -           -                          -       -
  S          home user using                                  System                           smart home     using pattern
  T         multi agent system                                                                   events        recognition
  E                [21]
  M
                                                                                    Smart         Field
           Friendly SH energy     Smart meter,               Grid based                                    Multi-in-one
      17                                         Zigbee                       -   Interactive Programmable
               mgmt. [22]         Smart Switch               controller                                    smart meter
                                                                                   terminal     gate array

                                                                                                             The interface
                                                                                              Jadex Agent-
                                                                                                             of the agent
           To apply agent based                                                              Hieratical goal
                                    Thermal               Jadex-using BDI                                    system with
      18    system to control a                    -                          -       -      decomposition-
                                     Sensor                    Agent                                           building
             smart home [23]                                                                    Goal Plan
                                                                                                              automation
                                                                                                Hierarchy
                                                                                                             installations
                                Smart devices-
                                 Play Station,
                                                 Plogg –                                                    Optimize the
            Develop an energy Lamp, Coffee                     Hydra –a
                                                wireless                                     Hydra – Event performance of
      19   efficient smart home     Maker                  middleware frame   -    Ubilenc
                                               smart meter                                   Management reading energy
                system [24]                                      work
                                                  plugs                                                     consumption


                                                                                                             Making this to
                                                                                                             assisted living
                                                                                              Changing the
           Develop a pro active,                                                                             for the elderly.
                                                                                                weighting
             adaptive, fuzzy                                Fuzzy control                                         Using
      20                         Light sensor      -                          -       -      factors and for
           home-control system                                process                                         knowledge of
                                                                                               adding and
                  [25]                                                                                           the user
                                                                                             removing rules
                                                                                                               routines for
                                                                                                                prediction


3.1. Communication System
3.1.1. Routing Algorithms
        D.M. Han and J.H. Lim proposed smart home energy management system-SHEMS
[6]. This system divides and assigns various home network tasks to appropriate components.
It can integrate diversified physical sensing information and control various consumer home
devices such as lamps, gas valves, curtains, TV, and air conditioners with the support of
active sensor networks having both sensor and actuator components. A personal area network
based SHEMS consists of three software components, Sensing Infra – gathers sensing data
and provides this to the decision components, Context Aware – a intelligent computing
behaviour, Service Management – a decision component adaptively selects the correct home
services based on the current home state. A new routing protocol DMPR (Disjoint Multi Path
based Routing) to improve the performance of the ZigBee sensor networks is also developed.

       Ming Xu, Longhua Ma, Feng Xia, Tengkai Yuan, Jixin Qian, and Meng Shao
suggested [7] a star-mesh hybrid topology based smart sensor network architecture using
general mobile devices to provide more efficient and valuable sensor network application and
services. This architecture consists of four components, ZigBee network coordinator –
responsible for communication, ZigBee node – composed of sensors and ZigBee wireless
module, GPRS network – transfer the gathered data to monitoring centre via the GPRS
network and the Internet, Monitoring centre – manage the data generated by all ZigBee
network. An improved Dijkstra algorithm is presented and the performance is evaluated
through simulation.

        C. Suh and Y.B. Ko put forwarded an intelligent home control system which divides
and assigns various home network tasks to appropriate components[8]. With the support of
active sensor networks, which is having sensor and actuator components, information are
sensed and control various consumer home devices. A new routing protocol LQIR (Link
Quality Indicator based Routing) is developed to improve the performance of active sensor
networks.


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        Dexing Zhong, Wei Ji, Yongli Liu and Jiuqiang Han demonstrated a design of smart
home network based on Zigbee wireless sensor network technology [9]. A more convenient
and reliable wireless communication environment for Zigbee wireless network in the smart
home system is achieved by using an improved routing algorithm, which is combination
Cluster-Tree and AODVjr algorithms.

3.1.2. Network Based
        Anthony Fleury, Michel Vacher and Norbert Noury examined a SVM-Health Smart
home [10] in a real flat, with Infra-Red Presence Sensors (location), door contacts (to control
the use of some facilities), temperature and hygrometry sensor in the bathroom, and
microphones (sound classification and speech recognition). The data collected from the
various sensors, is then used to classify each temporal frame into one of the activities of daily
living that was previously acquired (seven activities: hygiene, toilet use, eating, resting,
sleeping, communication, and dressing/undressing). This is done by using Support Vector
Machines.

        Bonhyun Koo Kyusuk Han James J. Park and Taeshik Shon implemented [11] the
design and implementation of the wireless sensor node and the coordinator based on ZigBee
technology. A monitoring system is built by using the GPRS network. An improved routing
algorithm based on the Dijkstra algorithm is presented to support multi-hop communications.

       Yu-Chi Wu, Pei-Fan Chen, and Zhi-Huang Hu presented a mobile health monitoring
system with the integration of a wearable ring-type pulse monitoring sensor with a smart
phone [12]. Through Bluetooth measurements are transmitted to the smart phone where user
can monitor own pulse or temperature. Measured data are transmitted to a remote server
through the mobile communication of the smart phone, such as SDPA, Wi-Fi, WiMax,
GPRS, etc. The remote server also tracks the position of the monitored person in real time.
       Khusvinder Gill, Shuang-Hua Yang, Fang Yao, and Xin Lu implemented a ZigBee
based virtual home automation system and Wi-Fi network which integrated through a
common home gateway [13]. The home gateway provides a simple and flexible user interface
and remote access to the home system.

       Jiali Bian, Dengke Fan, and Junming Zhang proposed a new type of intelligent home
control system [14], using Android Phone which can act as a temporary home gateway
instead of default gateway. An intelligent control system also constructed based on user
behaviour analysis. To achieve energy savings and reduce cost they made the system to
automatically shut down the unused device.

        Anuroop Gaddam, Subhas Chandra Mukhopadhyay, and Gourab Sen Gupta deliberate
and test the performance of the smart home monitoring system using zigbee radio frequency
(RF) communication [15]. Few highly accurate inexpensive smart sensors are used to develop
a typical in-house home monitoring for elder care application.

       Hairong Yan, Hongwei Huo, Youzhi Xu, and Mikael Gidlund recommended a
wireless sensor network application for 24 hour constant monitoring [16] without disturbing
daily activities of elderly people. A mixed positioning algorithm is also proposed to
determine the location, where the elderly person is. This helps the system to determine the
person’s activities and further to make decisions about his/her health status. This system
provides two types of basic needs: identify abnormal events and emergency alarms to doctor


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through auto call, SMS and e-mail and day-to-day requirement such as taking of medicine,
turn off water heater and so on.
        Yong Tae, Park Pranesh Sthapit, and Jae-Young Pyun designed a smart digital door lock
system for home automation [17]. This system consists, network of sensor nodes and
actuators with digital door lock as base station. A door lock system consists of RFID reader
for user authentication; touch LCD, motor module for opening and closing of he door, sensor
modules for detecting the condition inside the house, communication module, and control
module for controlling other modules. Advantage of this system is, it can be easily installed
immediately as per necessity without any prerequisite additional infrastructures.

        Dipak Surie, Olivier Laguionie, Thomas Pederson implemented a smart home to keep
track of every day object and their state changes produced based on the user’s interaction
with them[18]. A ZigBee communication protocol based wireless sensor networking of 42
everyday objects embedded with 81 simple state change sensors of eight sensor types in a
living laboratory smart home environment is implemented.

        Syam Krishna, J.Ravindra designed a remote home security system based on ZigBee
[19]. It consists of microcontroller based wireless sensor network center node with GSM
module, data collecting node, device control node and mobile phone. This system send
alaram signal to WSN center node when ever the ubnormal situation arise. The center node
send alarm short message to the users through the GSM module and GSM network
immediately. Similarly the user can also control the various devices connected with device
control unit through SMS.

3. 2. Control System
        Kaibin Bao, and Florian Allerding discussed about the prediction of user interactions
within a real world scenario of energy management for a smart home [20]. To address the
challenge of balancing energy demand and generation, external signals, reflecting the low
voltage grid’s state, are used. Two prediction algorithms to estimate the future behaviour of
the smart home are presented: The Day Type Model and a probabilistic approach based on a
first order Semi Markov Model. Some experimental results with real world data of the KIT
smart home are presented.

        M. R. Alam, M. B. I. Reaz, M. A. Mohd Ali, S. A. Samad, F. H. Hashim, M.K.
Hamzah, have an idea to study the psychological characteristics of home user [21]. People
follow some specific patterns in their life style. Inhabitant activity classification plays a vital
role to predict smart home events. This paper proposed a multiagent system to track the user
for task isolation. The system is composed of cooperative agents, which works by sharing
local views of individual agents. An algorithm is derived based on opposite entity state
extraction for activity classification. The algorithm clusters the smart home events by
isolating opposite status of home appliance. Result shows that the proposed algorithm can
successfully identify inhabitant activities of various lengths.

        Yong Zhao, Wanxing Sheng, Junping Sun, Weijun Shi build up the friendly smart
home energy system [22] which is composed of smart meter, smart socket/switch, grid
friendly appliance controller, smart interactive terminal and other smart devices. Then it
respectively elaborates and analyses their main functions, and gives their design block
diagrams. Then they look into the future of home energy system and also introduce the
ZigBee communication technology and its smart energy profile, and give a few typical
transactions based on the ZigBee Smart Energy profile.

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       Christian Reinisch and Wolfgang Kastner developed [23] a smart home control
system with an agent characteristic such as goal drivenness, robustness and learning capable
behaviour complement. They describe the complete process from selection of the most suited
agent approach for smart homes to detailing the transition from system specification to
implementation.

        Marco Jahn, Marc Jentsch, Christian R. Prause, Ferry Pramudianto, Amro Al-Akkad,
and Rene Reiners evolve a novel smart home system with integration of energy efficiency
features [24]. The smart home application is built on top of Hydra, a middleware framework
that facilitates the intelligent communication of heterogeneous embedded devices through an
overlay P2P network. Common devices available in private households and integrate wireless
power metering plugs to gain access to energy consumption data are interconnected. These
data are used for monitoring and analyzing consumed energy on device level in near real-
time. The combination of both, a technically sophisticated smart home application and at the
same time transparent, intuitive user interfaces showing information regarding the energy
usage e.g. energy price, energy source, standby consumption has the potential to bring the
vision of the energy efficient smart home within reach.

        Antti-Matti Vainio, Miika Valtonen, and Jukka Vanhala make out an idea to change
the environment, which always conforms, to the user’s desires and needs [25]. The
environment actuators are controlled proactively, so that the system can always anticipate the
user’s requirements. In this way, the user would not need to bother with equipment control.

4. CONCLUSION

Smart home system is used to monitor object/human remotely. Different kinds of sensors like
temperature, gas, light, ect., are used in smart home. Recommended home network is ZigBee
IEEE 802.15.4 because of its low power consumption. Internet, GSM, Mobile Network are
use as an external home access network. Using embedded concept any device can be used as
a gateway. Digital lock is used as a gateway. Smart phone can play dynamic roll as gateway
as well as external home network.
 People who are elderly or disabled benefit the most from a smart home system. These
systems help people those who are less mobile, or in delicate health, the opportunity to be
independent, rather than staying in an assisted living facility. In this paper, the comparative
study of different smart home system has been discussed. Since the smart home systems are
application specific, no particular system can be considered better than other. Future
perspectives of this work are focused towards developing an energy efficient smart home
system.

5. REFERENCES
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   4. Diane J. Cook, Juan C. Augusto, Vikramaditya R. Jakkula, “Ambient Intelligence:
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   5. Wei LIU, Yuhua YAN, "Application of ZigBee Wireless Sensor Network in Smart Home
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Smart home systems using wireless sensor network a comparative analysis

  • 1. INTERNATIONAL JOURNAL OF COMPUTER ENGINEERING & International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME TECHNOLOGY (IJCET) ISSN 0976 – 6367(Print) ISSN 0976 – 6375(Online) Volume 3, Issue 3, October - December (2012), pp. 94-103 IJCET © IAEME: www.iaeme.com/ijcet.asp Journal Impact Factor (2012): 3.9580 (Calculated by GISI) ©IAEME www.jifactor.com SMART HOME SYSTEMS USING WIRELESS SENSOR NETWORK – A COMPARATIVE ANALYSIS R. Kavitha Dr. G. M. Nasira Dr. N. Nachamai Research Scholar Assistant Professor Assistant Professor Dept. of Computer Science Dept. of Computer Science Dept. of Computer Science Christ University Chikkam Govt. Arts College Christ University Bangalore-29, Karnataka Tirupur, Tamil Nadu 641 602 Bangalore-29, Karnataka India India India kavitha.r@christuniversity.in nasiragm99@yahoo.com nachamai.m@christuniversity.in ABSTRACT The advances in the field of communication network, Wireless Sensors Network (WSN) is became a very interesting and challenging area of Networks. Smart home system using wireless sensor network technology enrich human life and helps to take care of the very old people easier who lives alone. Smart Home is the integration of technology and services through home networking for better quality of living. The smart home system consists of three components: physical components, control system and communication system. In this paper, basic structure of a smart home system and a comparative analysis of different smart home system with its components are discussed. Key Words: Smart Home, ZigBee, Sensors. 1. INTRODUCTION The average age of people in India is on the rise. New challenges are arising to provide a safe and secure living environment for them. As per the survey done by S. Irudaya Rajan [1], by 2050, the world population will peak to three hundred million. In that population, more would be elder than younger. The situation arises; where elder people live alone without assistance really require constant monitoring. Figure 1 shows the raising percentage of elderly 60 and above from 2001 to 2051. 94
  • 2. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Percentage of Elderly during the year 2001 - 2051 20 17.3 18 16 14.5 14 11.9 Percentage 12 9.9 10 8.2 Percentage 7.5 8 6 4 2 0 2001 2011 2021 2031 2041 2051 Year Figure 1. Percentage of elderly 60 and above during the year 2001 – 2051 The smart home system provides an inviolable, safe sheltered and comfortable life like in an assisted living environment. It enhances traditional security and safety mechanism by using intelligent monitoring and access control. The structure of this paper is as follows. Section 2 describes basic structure of a wireless smart home and its components. In section 3 comparative analysis of different smart home system is discussed. The conclusion and future research direction are presented in section 4. 2. SMART HOME SYSTEM The basic structure of a smart home system is depicted in figure 2. The smart home integration consists of three major areas, first, the physical components (electronic devices – sensors, actuators), second, the control system (artificial intelligence/expert system) and third, the communication system (wired/wireless network) which connects physical components and control system. The control system can access from home exterior through external home network like mobile network or Internet. In a smart home system the physical components sense the environment and pass to home control system through home sub networks and home network. Home control system takes the decision and passes the control information to the actuators through home network. For example, gas sensor detects the gas leakage in a smart home and passes this message to the home control system through ZigBee, a wireless network. Control system decides to switch off the gas valve and pass this to actuator, which will off/close the gas valve. 95
  • 3. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Home Network Home Sub Network-1 Home Home External Control Network System Home Sub Network-2 Wireless Smart Devices/ Wired/Wireless Network Sensors Network Figure. 2 Basic Structure of a Smart Home System 2.1. Physical Components The role of physical components is very important. It measures and collects the information and shares with the control system through network. Sensors, microcontroller, actuator and smart devices are used as physical components. Different applications use different sensors. Table 1 lists the sensing property, sensing mode, and application of the sensors [2], [4]. Sensors observe the smart home resident’s interaction with objects such as doors, windows, keys, and all home appliances. It recognizes activity of daily living. Table 1. Sensing property, modes and their applications Sensing property Sensing mode Sensor Applications Pressure, Temperature, Physical Properties Health Safety, Energy Efficiency Light, Humidity, Flow Position, Angular, Velocity, Motion and Presences Acceleration, Direction, Security, Location tracking, Falls detection properties Distance Security and health monitoring, Pool Biochemical Agents Solid, Liquids, Gases maintenance, Sprinkler efficiency Used to identify people and objects, Volume Others iButtons, Sound, Image control, Speech recognition, Context understanding 2.2. Control System Control system receives the information from different sensors and classifies it for the different types of activities. For example, the data collected from the accelerometer sensor positioned on the body recognize actions that involve repetitive body motions like walking, running, etc. A number of machine learning models are used for activity recognition in smart home application [4]. Following are some example. 96
  • 4. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME • Nave Bayes Classifiers – identify the activity that corresponds with the greatest probability to the set of sensor values observed. • Decision trees - To learn logical description of the activities. The probabilistic sequence of sensor events are encoded using Markov models dynamic, Bayes networks and Conditional random fields. Temporal Reasoning with a rule based system or Neural Network with reinforcement learner or Fuzzy rules develop an automated decision-making and control techniques. 2.3. Communication System The communication system is use to share the information between physical components and control system in the smart home system. It can be wired or wireless communication. The widely used wireless technologies are Bluetooth, WiFi, WiMAX, and ZigBee [5]. Bluetooth is the first and popular low bandwidth wireless interface for the smart home. In the last few years the bandwidth requirement of the smart home has increased dramatically which introduces WiFi - a wireless local area networks technology based on the IEEE 802.11. It covers an entire house, and the data rate is reduced to 1 MB or below at the far distance. It consumes more power and provides low security. WiMAX provides wireless broadband access and it is alternative to the cable connection. Due to the low cost, low power consumption and easy integration into smart home control system ZigBee a wireless technology become a quite suitable for smart home environment. Comparison of above mentioned four wireless network technologies are shown in Table 2. Table 2. Comparison of wireless technologies Protocol Frequency Power Transmission Rate/bps Security standard band/Hz consumption distance Bluetooth 802.15.1 2.4G 1M >10mW High 10m 802.11b, Wi-Fi 2.4G/5G 11-54M >10mW Low 200m 802.11g WiMAX 802.16 2-11G 70M >10mW Medium 30Km 868/915M, ZigBee 802.15.4 20-250K <10mW High 100m 2.4G 3. COMPARATIVE ANALYSIS OF A SMART HOME SYSTEM The comparative analysis of a smart home system using wireless sensor network is done by classifying a study into two categories as communication system and control system. The literature on the communication system explains more about network part of a smart home. The literature on the control system explains more about the methods and procedures used for monitoring and control process of a control system in a smart home. Table 3 represent the analysis with two categories as communication system and control system. The communication system is further divided into routing algorithm and network based categories. The first category discusses about the routing algorithm, which is used in home (ZigBee) network of a smart home. Second category discusses about implementation of both internal and external home network. 97
  • 5. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Table 3. Comparative Analysis of Smart Home Systems Controlling / Group/ Smart Devices Home Home external Future Objective Control System User GUI Network Parameter /Sensors Used Network Network Enhancement Algorithm Jess / DMPR – Smart Home Energy Generic To support R Information Disjoint 1 management System Sensor, ZigBee Internet - location O Extractor Multipath – SHEMS [6] Actuator service U Routing T Improved I C/S architecture Development of node routing Apply the N based on socket and the coordinator Node, algorithm whole system G 2 ZigBee communication GPRS - for smart home coordinator based on the in practice and mechanism of system [7] Dijkstra test A TCP/IP protocol Algorithm L G Develop a new LQIR – Link Generic O intelligent home Quality To support 3 Sensor, ZigBee - Internet - R control system based Indicator Location Based Actuator I on WSN [8] Based Routing T Proposed an algorithm for H improved routing routing M 4 algorithm - ZigBee - - - - discovery and combining Cluster- maintenance Tree and AODVjr [9] Improving a Monitoring of IR, classification Support Vector Classification 5 Elderly people at Temperature, - - - result using Machine Algorithm home [10] Hygrometry priori C knowledge O M Wi- M Magnetic, fi(camara- Multi-sensor centric Convergence U photo diode, control smart sensor network UMPC-Ultra Mobile Only technology N 6 microphone, system)Zig Wi-fi design using mobile mobile PC module device user monitoring with 3D I motion, bee (sensor- device [11] modelling C vibration control A system T Mobile health I monitoring system Ring –type HSDPA, Wi- GUI in O using wearable ring- pulse sensor, 7 Bluetooth - Fi, Wimax, Smart - - N type pulse monitor smart phone, GPRS phone sensor with smart ASUSP552W S phone [12] Y N Design and S E 8 implementation of Light and ZigBee - Wi-Fi Virtual _ _ T T home automation Smoke sensor Home GUI E W architecture [13] M O Dynamic intelligent R Android Implementing home control system User behavior Smart Classifier using K 9 - platform GSM, WiFi the proposed using Android phone Analysis phone Database network idea [14] B Incorporate A Sensor unit for more S electric Monitoring In-House monitoring intelligent E 10 appliance, bed ZigBee Only monitoring In-home only software - for elders [15] features like D usage, water GUI positioning usage method Pulse sensor, Implementing E- Mixed Pressure 11 Healthcare using WSN - Internet - Positioning - sensor, fire WSN [16] Algorithm sensor Implementing a smart Temperature, home with digital Door lock 12 gas, fire ZigBee - Internet - - door lock as base LCD sensors station [17] Deployment of a activity-centered WSN in a living Temperature, 13 ZigBee computing - - - - laboratory home Pressure, Light middleware Environment [18] Updating the Implement a smart Smoke, gas, system with 14 home security system temperature, ZigBee Sending SMS GSM - - intelligent [19] biosensor home security C Hybrid O Algorithm Improved N Prediction of user (Prediction Algorithm for T interaction – in Decision Tree Algorithm) – 15 - - - - short memory R energy management method Day Type of first order O smart home [20] Model, First markov model L order Semi markov Mode 98
  • 6. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Study of S psychological Clustering Improving an Y characteristics of Multi agent algorithm for algorithm 16 - - - - S home user using System smart home using pattern T multi agent system events recognition E [21] M Smart Field Friendly SH energy Smart meter, Grid based Multi-in-one 17 Zigbee - Interactive Programmable mgmt. [22] Smart Switch controller smart meter terminal gate array The interface Jadex Agent- of the agent To apply agent based Hieratical goal Thermal Jadex-using BDI system with 18 system to control a - - - decomposition- Sensor Agent building smart home [23] Goal Plan automation Hierarchy installations Smart devices- Play Station, Plogg – Optimize the Develop an energy Lamp, Coffee Hydra –a wireless Hydra – Event performance of 19 efficient smart home Maker middleware frame - Ubilenc smart meter Management reading energy system [24] work plugs consumption Making this to assisted living Changing the Develop a pro active, for the elderly. weighting adaptive, fuzzy Fuzzy control Using 20 Light sensor - - - factors and for home-control system process knowledge of adding and [25] the user removing rules routines for prediction 3.1. Communication System 3.1.1. Routing Algorithms D.M. Han and J.H. Lim proposed smart home energy management system-SHEMS [6]. This system divides and assigns various home network tasks to appropriate components. It can integrate diversified physical sensing information and control various consumer home devices such as lamps, gas valves, curtains, TV, and air conditioners with the support of active sensor networks having both sensor and actuator components. A personal area network based SHEMS consists of three software components, Sensing Infra – gathers sensing data and provides this to the decision components, Context Aware – a intelligent computing behaviour, Service Management – a decision component adaptively selects the correct home services based on the current home state. A new routing protocol DMPR (Disjoint Multi Path based Routing) to improve the performance of the ZigBee sensor networks is also developed. Ming Xu, Longhua Ma, Feng Xia, Tengkai Yuan, Jixin Qian, and Meng Shao suggested [7] a star-mesh hybrid topology based smart sensor network architecture using general mobile devices to provide more efficient and valuable sensor network application and services. This architecture consists of four components, ZigBee network coordinator – responsible for communication, ZigBee node – composed of sensors and ZigBee wireless module, GPRS network – transfer the gathered data to monitoring centre via the GPRS network and the Internet, Monitoring centre – manage the data generated by all ZigBee network. An improved Dijkstra algorithm is presented and the performance is evaluated through simulation. C. Suh and Y.B. Ko put forwarded an intelligent home control system which divides and assigns various home network tasks to appropriate components[8]. With the support of active sensor networks, which is having sensor and actuator components, information are sensed and control various consumer home devices. A new routing protocol LQIR (Link Quality Indicator based Routing) is developed to improve the performance of active sensor networks. 99
  • 7. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Dexing Zhong, Wei Ji, Yongli Liu and Jiuqiang Han demonstrated a design of smart home network based on Zigbee wireless sensor network technology [9]. A more convenient and reliable wireless communication environment for Zigbee wireless network in the smart home system is achieved by using an improved routing algorithm, which is combination Cluster-Tree and AODVjr algorithms. 3.1.2. Network Based Anthony Fleury, Michel Vacher and Norbert Noury examined a SVM-Health Smart home [10] in a real flat, with Infra-Red Presence Sensors (location), door contacts (to control the use of some facilities), temperature and hygrometry sensor in the bathroom, and microphones (sound classification and speech recognition). The data collected from the various sensors, is then used to classify each temporal frame into one of the activities of daily living that was previously acquired (seven activities: hygiene, toilet use, eating, resting, sleeping, communication, and dressing/undressing). This is done by using Support Vector Machines. Bonhyun Koo Kyusuk Han James J. Park and Taeshik Shon implemented [11] the design and implementation of the wireless sensor node and the coordinator based on ZigBee technology. A monitoring system is built by using the GPRS network. An improved routing algorithm based on the Dijkstra algorithm is presented to support multi-hop communications. Yu-Chi Wu, Pei-Fan Chen, and Zhi-Huang Hu presented a mobile health monitoring system with the integration of a wearable ring-type pulse monitoring sensor with a smart phone [12]. Through Bluetooth measurements are transmitted to the smart phone where user can monitor own pulse or temperature. Measured data are transmitted to a remote server through the mobile communication of the smart phone, such as SDPA, Wi-Fi, WiMax, GPRS, etc. The remote server also tracks the position of the monitored person in real time. Khusvinder Gill, Shuang-Hua Yang, Fang Yao, and Xin Lu implemented a ZigBee based virtual home automation system and Wi-Fi network which integrated through a common home gateway [13]. The home gateway provides a simple and flexible user interface and remote access to the home system. Jiali Bian, Dengke Fan, and Junming Zhang proposed a new type of intelligent home control system [14], using Android Phone which can act as a temporary home gateway instead of default gateway. An intelligent control system also constructed based on user behaviour analysis. To achieve energy savings and reduce cost they made the system to automatically shut down the unused device. Anuroop Gaddam, Subhas Chandra Mukhopadhyay, and Gourab Sen Gupta deliberate and test the performance of the smart home monitoring system using zigbee radio frequency (RF) communication [15]. Few highly accurate inexpensive smart sensors are used to develop a typical in-house home monitoring for elder care application. Hairong Yan, Hongwei Huo, Youzhi Xu, and Mikael Gidlund recommended a wireless sensor network application for 24 hour constant monitoring [16] without disturbing daily activities of elderly people. A mixed positioning algorithm is also proposed to determine the location, where the elderly person is. This helps the system to determine the person’s activities and further to make decisions about his/her health status. This system provides two types of basic needs: identify abnormal events and emergency alarms to doctor 100
  • 8. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME through auto call, SMS and e-mail and day-to-day requirement such as taking of medicine, turn off water heater and so on. Yong Tae, Park Pranesh Sthapit, and Jae-Young Pyun designed a smart digital door lock system for home automation [17]. This system consists, network of sensor nodes and actuators with digital door lock as base station. A door lock system consists of RFID reader for user authentication; touch LCD, motor module for opening and closing of he door, sensor modules for detecting the condition inside the house, communication module, and control module for controlling other modules. Advantage of this system is, it can be easily installed immediately as per necessity without any prerequisite additional infrastructures. Dipak Surie, Olivier Laguionie, Thomas Pederson implemented a smart home to keep track of every day object and their state changes produced based on the user’s interaction with them[18]. A ZigBee communication protocol based wireless sensor networking of 42 everyday objects embedded with 81 simple state change sensors of eight sensor types in a living laboratory smart home environment is implemented. Syam Krishna, J.Ravindra designed a remote home security system based on ZigBee [19]. It consists of microcontroller based wireless sensor network center node with GSM module, data collecting node, device control node and mobile phone. This system send alaram signal to WSN center node when ever the ubnormal situation arise. The center node send alarm short message to the users through the GSM module and GSM network immediately. Similarly the user can also control the various devices connected with device control unit through SMS. 3. 2. Control System Kaibin Bao, and Florian Allerding discussed about the prediction of user interactions within a real world scenario of energy management for a smart home [20]. To address the challenge of balancing energy demand and generation, external signals, reflecting the low voltage grid’s state, are used. Two prediction algorithms to estimate the future behaviour of the smart home are presented: The Day Type Model and a probabilistic approach based on a first order Semi Markov Model. Some experimental results with real world data of the KIT smart home are presented. M. R. Alam, M. B. I. Reaz, M. A. Mohd Ali, S. A. Samad, F. H. Hashim, M.K. Hamzah, have an idea to study the psychological characteristics of home user [21]. People follow some specific patterns in their life style. Inhabitant activity classification plays a vital role to predict smart home events. This paper proposed a multiagent system to track the user for task isolation. The system is composed of cooperative agents, which works by sharing local views of individual agents. An algorithm is derived based on opposite entity state extraction for activity classification. The algorithm clusters the smart home events by isolating opposite status of home appliance. Result shows that the proposed algorithm can successfully identify inhabitant activities of various lengths. Yong Zhao, Wanxing Sheng, Junping Sun, Weijun Shi build up the friendly smart home energy system [22] which is composed of smart meter, smart socket/switch, grid friendly appliance controller, smart interactive terminal and other smart devices. Then it respectively elaborates and analyses their main functions, and gives their design block diagrams. Then they look into the future of home energy system and also introduce the ZigBee communication technology and its smart energy profile, and give a few typical transactions based on the ZigBee Smart Energy profile. 101
  • 9. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME Christian Reinisch and Wolfgang Kastner developed [23] a smart home control system with an agent characteristic such as goal drivenness, robustness and learning capable behaviour complement. They describe the complete process from selection of the most suited agent approach for smart homes to detailing the transition from system specification to implementation. Marco Jahn, Marc Jentsch, Christian R. Prause, Ferry Pramudianto, Amro Al-Akkad, and Rene Reiners evolve a novel smart home system with integration of energy efficiency features [24]. The smart home application is built on top of Hydra, a middleware framework that facilitates the intelligent communication of heterogeneous embedded devices through an overlay P2P network. Common devices available in private households and integrate wireless power metering plugs to gain access to energy consumption data are interconnected. These data are used for monitoring and analyzing consumed energy on device level in near real- time. The combination of both, a technically sophisticated smart home application and at the same time transparent, intuitive user interfaces showing information regarding the energy usage e.g. energy price, energy source, standby consumption has the potential to bring the vision of the energy efficient smart home within reach. Antti-Matti Vainio, Miika Valtonen, and Jukka Vanhala make out an idea to change the environment, which always conforms, to the user’s desires and needs [25]. The environment actuators are controlled proactively, so that the system can always anticipate the user’s requirements. In this way, the user would not need to bother with equipment control. 4. CONCLUSION Smart home system is used to monitor object/human remotely. Different kinds of sensors like temperature, gas, light, ect., are used in smart home. Recommended home network is ZigBee IEEE 802.15.4 because of its low power consumption. Internet, GSM, Mobile Network are use as an external home access network. Using embedded concept any device can be used as a gateway. Digital lock is used as a gateway. Smart phone can play dynamic roll as gateway as well as external home network. People who are elderly or disabled benefit the most from a smart home system. These systems help people those who are less mobile, or in delicate health, the opportunity to be independent, rather than staying in an assisted living facility. In this paper, the comparative study of different smart home system has been discussed. Since the smart home systems are application specific, no particular system can be considered better than other. Future perspectives of this work are focused towards developing an energy efficient smart home system. 5. REFERENCES 1. S.Irudaya Rajan, “Population Aging and Health in India”, Centre for Enquiry into Health and Allied Themes, Survey Number 2804, 2805, Mumbai, 2006. 2. Diane J. Cook and Sajal K. Das, “How Smart are our Environments? An Updated Look at the State of the Art”, Parvasive and mobile computing, vol.3, pp. 53-73, 2007. 3. Rosslin John Robles, Tai-hoon Kim, “Applications, Systems and Methods in Smart Home Technology: A Review”, International Journal of Advanced Science and Technology, Vol. 15, 2010. 4. Diane J. Cook, Juan C. Augusto, Vikramaditya R. Jakkula, “Ambient Intelligence: Technologies, Applications, and Opportunities”, Parvasive and mobile computing, vol.5, pp 277-298, 2009. 102
  • 10. International Journal of Computer Engineering and Technology (IJCET), ISSN 0976 – 6367(Print), ISSN 0976 – 6375(Online) Volume 3, Issue 3, October-December (2012), © IAEME 5. Wei LIU, Yuhua YAN, "Application of ZigBee Wireless Sensor Network in Smart Home System", IJACT: International Journal of Advancements in Computing Technology, Vol. 3, No. 5, pp. 154 - 160, 2011. 6. D.M. Han, J.H. Lim “Design and Implementation of Smart Home Energy Management Systems based on ZigBee”, IEEE, 2010. 7. Ming Xu, Longhua Ma, Feng Xia, Tengkai Yuan, Jixin Qian, Meng Shao, “Design and Implementation of a Wireless Sensor Network for Smart Homes”, 2008. 8. C. Suh and Y.-B. Ko: Design and Implementation of Intelligent Home Control Systems based on Active Sensor Networks, IEEE, 2008 9. Dexing Zhong, Wei Ji, Yongli Liu, Jiuqiang Han, An Improved Routing Algorithm of Zigbee Wireless Sensor Network for Smart Home System, 5th International Conference on Automation, Robotics and Applications, , Wellington, New Zealand, 2011. 10. Anthony Fleury, Michel Vacher and Norbert Noury, “SVM-Based Multi-Modal Classification of Activities of Daily Living in Health Smart Homes: Sensors, Algorithms and First Experimental Results”, IEEE transation on Information Technology in Biomedicine, pp. 274 - 283, 2010. 11. Bonhyun Koo, Kyusuk Han, James Jong Hyuk Park, Taeshik Shon, “Design and implementation of a wireless sensor network architecture using smart mobile devices”, Springer Science Business Media, 2011. 12. Yu-Chi Wu, Pei-Fan Chen, Zhi-Huang Hu, “A mobile health monitoring system using RFID ring-type pulse sensor” , Eighth IEEE International Conference on Dependable, Autonomic and Secure Computing, 2009. 13. Khusvinder Gill, Shuang-Hua Yang, Fang Yao, and Xin Lu, “A ZigBee-Based Home Automation System”, IEEE Transactions on Consumer Electronics, Vol. 55, No. 2, 2009. 14. Jiali Bian, Dengke Fan, Junming Zhang, “The new Intelligent Home Control System Based on the Dynamic and Intelligent Gateway”, Proceedings of IEEE IC-BNMT,2011. 15. Anuroop Gaddam, Subhas Chandra Mukhopadhyay, Gourab Sen Gupta, “Trial & Experimentation Of A Smart Home Monitoring System For Elderly”, IEEE, 2011. 16. Hairong Yan, Hongwei Huo, Youzhi Xu, Mikael Gidlund, “Wireless Sensor Network Based E-Health System –Implementation and Experimental Results”, IEEE Transactions on Consumer Electronics, Vol. 56, No. 4, 2010. 17. Yong Tae, Park Pranesh Sthapit, Jae-Young Pyun,” Smart Digital Door Lock for the Home Automation”, IEEE, 2009. 18. Dipak Surie, Olivier Laguionie, Thomas Pederson, “Wireless Sensor Networking of Everyday Objects in a Smart Home Environment”, IEEE, 2008. 19. Syam Krishna, J.Ravindra, “ Design And Implementation Of Remote Home Security System Based on WSNs And GSM Technology”, International Journal Of Engineering Science & Advanced Technology, Vol.2, pp. 139-142, 2012. 20. Kaibin Bao, Florian Allerding, “User Behavior Prediction for Energy Management in Smart Homes”, Eighth International Conference on Fuzzy Systems and Knowledge Discovery, pp.1335-1339, 2011. 21. M. R. Alam, M. B. I. Reaz, M. A. Mohd Ali, S. A. Samad, F. H. Hashim, M.K. Hamzah, Human Activity Classification for Smart Home:A Multiagent Approach, ISIEA -2010, pp. 3- 5, 2010. 22. Yong Zhao, Wanxing Sheng, Junping Sun, Weijun Shi, “Research and Thinking of Friendly Smart HomeEnergy System Based on Smart Power, IEEE, 2011. 23. Christian Reinisch, Wolfgang Kastner, “Agent based Control in the Smart Home”, IEEE , 2011. 24. Marco Jahn, Marc Jentsch, Christian R. Prause, Ferry Pramudianto, Amro Al-Akkad, Rene Reiners, “The Energy Aware Smart Home”, IEEE, 2010. 25. Antti-Matti Vainio, Miika Valtonen, Jukka Vanhala, “Proactive Fuzzy Control and Adaptation Methods for Smart Homes”, IEEE, 2008. 103