Embedded System Design UG DGK

8/6/2019 Embedded System Design UG DGK

1/15

Embedded System Design

Prof. Kanade D.G.


2/15

What is System?

A way of working, organizing orperforming one or many tasksaccording to a fixed set of rules,

program or plan.

Also an arrangement in which all

units assemble and work togetheraccording to a program or plan.


3/15

Examples.

Time display system A watch

Automatic cloth washing system Awashing machine


4/15

What is Embedded System?

A n E m b e d d e d S yste m is a m icrop ro cessor b a se d,syste m th a t is em b ed d ed as a su b system in a

(la rg e r syste m w h ich a y o r m a y n o t be ao m pu te r s y s te m ).

OI


5/15

More definitions

A n e m b e d d e d system is a system th a t h a s- ,softw are e m b e d d e d in to co m p u te r h a rd w are

w h ich m a ke s a sy ste m d e d ica te d fo r a n

( )a p p lica tio n s o r sp e cific p a rt o f a n

a p p lica tio n o r p ro d u ct o r p a rt o f a la rg e r.system

A n em b ed d ed system is on e th at h as ad e d ica te d p u rp o se so ftw a re e m b e d d e d in a.co m p u te r h a rd w a re

Rajkamal1.


6/15

A computer is a system that has the following or morecomponents.1) A microprocessor2) A large memory comprising the following two kinds:(a) Primary memory (semiconductormemories - RAM,

ROM and fast accessible caches)

et s consider aComputer

(b) Secondary memory [(magnetic memory located inhard disks, diskettes and cartridge tapes, opticalmemory in CD-ROM or memory stick (in mobilecomputer)] using which different user programs canload into the primary memory and can be run.


7/15

Computer

I/O units such as touch screen, modem, fax cum modemetc.

Input units such as keyboard, mouse, digitizer, scanner, etc.Output units like LCD screen, video monitor, printer, etc.

Networking units like Ethernet card, front-endprocessor-based server, bus drivers, etc.

Operating system (OS).

General purpose user interfaces and applicationsoftware, mostly in secondary memory


8/15

Now Consider Embedded System

1)Embeds hardware to give computer like functionalities

2) Embeds main application software generally into flash orROM and the application software performs concurrently thenumber of tasks.

Three main embedded components

3) Embeds a real time operating system ( RTOS), which

supervises the application software tasks running on thehardware and organizes the accesses to system resourcesaccording to priorities and timing constraints of tasks in thesystem.


9/15

Components of an EmbeddedSystem Hardware


10/15

Applications

Flight control : -Stability real time differential feedback loops

Positioning & navigation ,GPS INS

Instrumentation , , ,Data acquisition display processing and archive

RadarCommunication

Flight Control


11/15

Applications.

Engine management , ,Fu e l ig n itio n tim in g

Emission controlInstrumentation

, , ,D a ta a cq u isitio n d isp la y p ro ce ssin g a n d a rch iv e

Safety & stability

,A irb a g s a ctive co n tro lEntertainment & comfort

, / , R a d io A C

Automotive


12/15

Applications.

Implies autonomous operationNphysical degree of freedomArtificial intelligenceControl heavy

Mission oriented , , , ,epair search rescue investigate anderform physically difficult tasks

Robotics


13/15

Applications.

Industrial automationPlant monitoring and production control

Similar to control systems but with emphasis onmanagement

Process Control


14/15

Applications.

Home appliancesYesterdays appliances: add computation

Tomorrows appliances: add networking (Internet)

Office electronicsIntegrationElectronic paper (filing, printing, sending, and receiving)

Home/office automationCommon fantasy about the automated home or office ofthe future with lights and appliances that operate bythemselves or with minimal effort

Consumer Electronics


15/15

Applications.

Stitching LANsBridge

Connects two parts of the same networkRouterLink networks using different network identities

Extending portsSwitch

Transmit to recipient onlyHubTransmit to all

Handle large volume of highly structured data with littletransformation

Network Components

Documents

Embedded System Design UG DGK