Latest embedded project abstracts
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This document covers various technological innovations and systems proposed by Softroniics, including a comparison of unmanned vehicle control paradigms, a high-efficiency converter for photovoltaic water pumping, and an intelligent traffic control system. It details advancements in various converter designs for energy applications, as well as wireless sensor networks for home automation and smart buildings. Additionally, it presents a bendable, wearable device for monitoring respiratory health using non-contact sensors.
Latest embedded project abstracts
- 1. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Task versus Vehicle-Based Control Paradigms in Multiple Unmanned Vehicle Supervision by a Single Operator There has recently been a significant amount of activity in developing supervisory control algorithms for multiple unmanned aerial vehicle operation by a single operator. While previous work has demonstrated the favorable impacts that arise in the introduction of increasingly sophisticated autonomy algorithms, little work has performed an explicit comparison of different types of multiple unmanned vehicle control architectures on operator performance and workload. This paper compares a vehicle-based paradigm (where a single operator individually assigns tasks to unmanned assets) to a task-based paradigm (where the operator generates a task list, which is then given to the group of vehicles that determine how to best divide the tasks among themselves.) The results demonstrate significant advantages in using a task-based paradigm for both overall performance and robustness to increased workload. This effort also demonstrated that while previous video gaming experience mattered for performance, the degree of experience that demonstrated benefit was minimal.
- 2. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Implementation of a High-Efficiency, High-Lifetime, and Low- Cost Converter for an Autonomous Photovoltaic Water Pumping System This paper proposes a new converter for photovoltaic (PV) water pumping or treatment systems without the use of chemical storage elements, such as batteries. The converter is designed to drive a three- phase induction motor directly from PV energy. The use of a three- phase induction motor presents a better solution to the commercial dc motor water pumping system. The development is oriented to achieve a more efficient, reliable, maintenance-free, and cheaper solution than the standard ones that use dc motors or low-voltage synchronous motors. The developed system is based on a current-fed multiresonant converter also known as resonant two-inductor boost converter (TIBC) and a full-bridge three-phase voltage source inverter (VSI). The classic topology of the TIBC has features like high voltage gain and low input current ripple. In this paper, it is further improved with the use of a nonisolated recovery snubber along with a hysteresis controller and the use of a constant duty cycle control to improve its efficiency.
- 3. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Implementing Intelligent Traffic Control System for Congestion Control, Ambulance Clearance, and Stolen Vehicle Detection. This paper presents an intelligent traffic control system to pass emergency vehicles smoothly. Each individual vehicle is equipped with special radio frequency identification (RFID) tag (placed at a strategic location), which makes it impossible to remove or destroy. We use RFID reader, NSK EDK-125-TTL, and PIC16F877A system-on-chip to read the RFID tags attached to the vehicle. It counts number of vehicles that passes on a particular path during a specified duration. It also determines the network congestion, and hence the green light duration for that path. If the RFID-tag-read belongs to the stolen vehicle, then a message is sent using GSM SIM300 to the police control room. In addition, when an ambulance is approaching the junction, it will communicate to the traffic controller in the junction to turn ON the green light. This module uses ZigBee modules on CC2500 and PIC16F877A system-on-chip for wireless communications between the ambulance and traffic controller. The prototype was tested under different combinations of inputs in our wireless communication laboratory and experimental results were found as expected.
- 4. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 An Improved Single-Phase Active-Front-End Rectifier System for Use with Three- Phase Variable-Frequency Drives In many rural areas, due to unavailability of three-phase ac power, three-phase variable-frequency drives (VFDs) are often required to operate from a single-phase ac source. Powering up three-phase VFDs from single-phase ac source requires addressing many issues: higher RMS value of input diode current, higher ripple voltage across the dc bus capacitor, higher peak input current, higher input current distortion, lower power factor, and poorer system efficiency. All of these lead to severe derating of VFDs for single-phase applications. A new low-cost single-phase active circuit based on injecting current into the midpoint of the dc bus employing only one bidirectional switch is proposed here. The bidirectional switch carries current for less than a quarter cycle and is rated accordingly. The presence of a three-phase diode bridge rectifier lends itself to better distribute the higher input root-mean-square current so that the diodes need not carry current higher than their nominal rating. The proposed method shows that VFDs need not be derated to achieve rated output power. Test results from a 15-hp 230-V system are given to prove the concept.
- 5. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 A Family of Soft-Switching DC–DC Converters Based on a Phase-Shift-Controlled Active Boost Rectifier High efficiency and high power density can be achieved with a dc-dc transformer by operating all the switches at a fixed 50% duty cycle. However, the output voltage of the dc-dc transformer cannot be regulated. Novel rectifiers named active boost rectifiers (ABRs) are proposed in this paper. Basically, an ABR is composed of a traditional diode rectifier and a bidirectional switch. By adopting phase-shift control between the primary- and secondary-side switches, the output voltage regulation can be achieved when introducing the ABR to a dc-dc transformer. As a result, a family of novel soft-switching dc-dc converters is harvested. When the proposed converter operates in the soft-switching continuous conduction mode, zero-voltage-switching (ZVS) performance for all the primary- and secondary-side switches is achieved. When the converter operates in the discontinuous conduction mode, zero current switching (ZCS) for the primary-side switches and ZVS for the secondary-side switches are achieved. Furthermore, the diode reverse-recovery problem is alleviated by employing the ABR and phase-shift control scheme.
- 6. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Hybrid Transformer ZVS/ZCS DC–DC Converter With Optimized Magnetics and Improved Power Devices Utilization for Photovoltaic Module Applications This paper presents a nonisolated, high boost ratio dc-dc converter with the application for photovoltaic (PV) modules. The proposed converter utilizes a hybrid transformer to incorporate the resonant operation mode into a traditional high boost ratio active-clamp coupled-inductor pulse-width-modulation dc-dc converter, achieving zero-voltage- switching (ZVS) turn-on of active switches and zero-current-switching turn-off of diodes. As a result of the inductive and capacitive energy being transferred simultaneously within the whole switching period, power device utilization (PDU) is improved and magnetic utilization (MU) is optimized. The improved PDU allows reduction of the silicon area required to realize the power devices of the converter. The optimized MU reduces the dc-bias of magnetizing current in the magnetic core, leading to smaller sized magnetics. Since the magnetizing current has low dc-bias, the ripple magnetizing current can be utilized to assist ZVS of main switch, while maintaining low root- mean-square (RMS) conduction loss.
- 7. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Wireless Sensing and Vibration Control With Increased Redundancy and Robustness Design Control systems with long distance sensor and actuator wiring have the problem of high system cost and increased sensor noise. Wireless sensor network (WSN)-based control systems are an alternative solution involving lower setup and maintenance costs and reduced sensor noise. However, WSN-based control systems also encounter problems such as possible data loss, irregular sampling periods (due to the uncertainty of the wireless channel), and the possibility of sensor breakdown (due to the increased complexity of the overall control system). In this paper, a wireless microcontroller-based control system is designed and implemented to wirelessly perform vibration control. The wireless microcontroller-based system is quite different from regular control systems due to its limited speed and computational power. Hardware, software, and control algorithm design are described in detail to demonstrate this prototype. Model and system state compensation is used in the wireless control system to solve the problems of data loss and sensor breakdown.
- 8. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 Mixed Sound Event Verification on Wireless Sensor Network for Home Automation In this paper, we present the problem of mixed sound event verification in a wireless sensor network for home automation systems. In home automation systems, the sound recognized by the system becomes the basis for performing certain tasks. However, if a target source is mixed with another sound due to simultaneous occurrence, the system would generate poor recognition results, subsequently leading to inappropriate responses. To handle such problems, this study proposes a framework, which consists of sound separation and sound verification techniques based on a wireless sensor network (WSN), to realize sound-triggered automation. In the sound separation phase, we present a convolutive blind source separation system with source number estimation using time-frequency clustering. An accurate mixing matrix can be estimated by the proposed phase compensation technique and used for reconstructing the separated sound sources. In the verification phase, Mel frequency cepstral coefficients and Fisher scores that are derived from the wavelet packet decomposition of signals are used as features for support vector machines.
- 9. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 WSN-Based Smart Sensors and Actuator for Power Management in Intelligent Buildings The design and development of a smart monitoring and controlling system for household electrical appliances in real time has been reported in this paper. The system principally monitors electrical parameters of household appliances such as voltage and current and subsequently calculates the power consumed. The novelty of this system is the implementation of the controlling mechanism of appliances in different ways. The developed system is a low-cost and flexible in operation and thus can save electricity expense of the consumers. The prototype has been extensively tested in real-life situations and experimental results are very encouraging.
- 10. SOFTRONIICS www.softroniics.in An iso certified Company Call: 9037291113 SOFTRONIICS CALICUT || PALAKKAD || COIMBATORE Call: 9037291113 A Bendable and Wearable Cardio respiratory Monitoring Device Fusing Two Noncontact Sensor Principles. This paper presents a mobile device for monitoring respiration and pulse. The device is realized as a bendable inlay, which can be put into a shirt pocket or the inside pocket of a jacket. In order to achieve optimum monitoring performance, the device combines two sensor principles both working in a noncontact way through several layers of cotton or other textiles. One sensor is based on magnetic induction and is intended for respiratory monitoring, the other one is a reflective photoplethysmographic sensor intended for pulse detection. Furthermore, since each sensor signal shows a certain dependence on both physiological parameters, fusing the sensor signals renders the possibility of signal coverage enhancement. FOR MORE ABSTRACTS CALL: 9037291113, 9995970405 Visit: WWW.SOFTRONIICS.IN