Human machine interfacing

ZEESHAN HASAN S 1RV09IT060

DEPARTMENT OF INSTRUMENTATION TECHNOLOGY, RVCE BANGALORE
12/17/2012 1
59

 Introduction
 Terminology
 Usability
 Types
 History
 Consistency
 Modalities and Modes

DEPARTMENT OF INSTRUMENTATION TECHNOLOGY, RVCE 12/17/2012 2
BANGALORE 59

 The user interface, in
the industrial design field
of human–machine interaction,
is the space where interaction
between humans and machines
occurs.

 The goal of interaction
between a human and a
machine at the user interface is
effective operation and control
of the machine,

 Feedback from the machine
which aids the operator in
making operational decisions

BANGALORE 59

 A user interface is the system
by which people
(users) interact with
a machine.

 The user interface includes
hardware (physical) and
software (logical) components.

 Other terms for user interface
include human–computer
interface (HCI) and man–
machine interface (MMI).

BANGALORE 59

 The term "user interface" is
often used in the context of
(personal) computer systems
and electronic devices

 An HMI is typically local to one
machine or piece of equipment,
and is the interface method
between the human and the
equipment/machine

 The system may expose several
user interfaces to serve
different kinds of users.

BANGALORE 59

 The user interface of a
mechanical system, a vehicle or
an industrial installation is
sometimes referred to as the
human–machine interface

 In some circumstance
computers might observe the
user, and react according to
their actions without specific
commands.

 A means of tracking parts of
the body is required, and
sensors noting the position of
the head,

 Or direction of gaze and so on
have been used experimentally.
This is particularly relevant to
immersive interfaces
DEPARTMENT OF INSTRUMENTATION TECHNOLOGY, RVCE BANGALORE 12/17/2012 6
59

 Usability is the degree to which
the design of a particular user
interface takes into account the
human psychology and physiology
of the users

 User interfaces are considered by
some authors to be a prime
ingredient of Computer user
satisfaction.

 The design of a user interface
affects the amount of effort the
user must expend to provide
input for the system and to
interpret the output of the system

DEPARTMENT OF INSTRUMENTATION TECHNOLOGY, RVCE
12/17/2012 7
BANGALORE 59

 In computer science and human–
computer interaction, the user
interface (of a computer
program) refers to the graphical,
textual and auditory information
the program presents to the user

 And the control sequences (such
as keystrokes with the computer
keyboard, movements of the
computer mouse

12/17/2012 8
BANGALORE 59

 Direct manipulation interface is the
name of a general class of user
interfaces that allow users to
manipulate objects presented to
them
 Graphical user interfaces (GUI)
accept input via devices such as
computer keyboard and mouse and
provide articulated graphical output
on the computer monitor
 Web-based user interfaces or web
user interfaces (WUI) that accept
input and provide output by
generating web pages which are
transmitted via the Internet and
viewed by the user using a web
browser

BANGALORE 59

 Touchscreens are displays that
accept input by touch of fingers or a
stylus. Used in a growing amount
of mobile devices and many types
of point of sale, industrial processes
and machines, self-service
machines etc.

 Command line interfaces, where
the user provides the input by
typing a command string with the
computer keyboard and the system
provides output by printing text on
the computer monitor.

12/17/2012 10
BANGALORE 59

 Touch user interface are graphical
user interfaces using a touchpad or
touchscreen display as a combined
input and output device

 Attentive user interfaces manage the
user attention deciding when to
interrupt the user, the kind of
warnings, and the level of detail of
the messages presented to the user.

 Gesture interfaces are graphical user
interfaces which accept input in a
form of hand gestures, or mouse
gestures sketched with a computer
mouse or a stylus.

BANGALORE 59

 Voice user interfaces, which
accept input and provide
output by generating voice
prompts. The user input is
made by pressing keys or
buttons, or responding verbally
to the interface.

BANGALORE 59

 The history of user interfaces
can be divided into the
following phases according to
the dominant type of user
interface:

 Batch interface, 1945–1968
 Command-line user interface,
1969 to present
 Graphical user interface, 1981
to present

DEPARTMENT OF INSTRUMENTATION TECHNOLOGY, RVCE BANGALORE 12/17/2012 13
59

 A property of a good user
interface is consistency.

 Good user interface design is
about getting a user to have a
consistent set of expectations

 Consistency can be bad if not
used for a purpose and when it
serves no benefit for the end
user

BANGALORE 59

 There are three aspects identified as
relevant to consistency

 First, the controls for different
features should be presented in a
consistent manner so that users can
find the controls easily

 Second, there is the "principle of least
astonishment“ Various features
should work in similar way

 Third, consistency counsels against
user interface changes version-to-
version. Change should be minimized,
and forward-compatibility should be
maintained.
BANGALORE 59

 Two words are used in UI design to
describe the different ways in which a
user can utilize a product

 Modality refers to several alternate
interfaces to the same product,
while mode describes different states
of the same interface.

 A mode is a distinct method of
operation within a computer program,
in which the same input can produce
different perceived results depending
of the state of the computer program

12/17/2012 16
BANGALORE 59

 www.wikipedia.com
 www.abb.in/hmi2109
 www.schneider.com/hmi098#.asp

DEPARTMENT OF INSTRUMENTATION
TECHNOLOGY, RVCE BANGALORE 59
12/17/2012 17

DEPARTMENT OF INSTRUMENTATION
TECHNOLOGY, RVCE BANGALORE 59
12/17/2012 18

Human machine interfacing

More Related Content

What's hot (9)

Viewers also liked (13)

Similar to Human machine interfacing (20)

Recently uploaded (20)

Human machine interfacing