20-11-2012, 01:02 PM
Embedded Systems
[attachment=40313]
Normal everyday items contain computer chips, complete with CPU, memory, programs
Television, Entt. Center, Automobiles, Irrigation,
MP3, cell phones, GPS,
microwave, home alarms, thermostats,
network routers, game consoles
Special purpose machines contain computers
Manufacturing, metering, sensing,
ATM machines, kiosks
Medical Instruments, Aircraft, Satellites,
IMPACT
45 billion market in 2004, rising to $88 billion in 2009
Many more embedded processors per person, than general purpose processors
A cell phone may have 20-100 separate processors
Value of embedded electronics in Automobiles: 25% of total cost, to rise to 35% by 2015
Embedded market is 50 times the desktop market
Application Domains:
Automotive, Avionics, Industrial Automation, Telecommunication, Consumer Electronics, Medical, IT hardware
Cutting edge:
Multicore processors, Network on Chip, System on chip (e.g. the iPhone, PS-3)
Embedded Systems
A “special purpose” unit
e.g. simple cell phone (it does not run MS-Word)
Has a CPU, memory and programs that control mainly physical things
The program is preinstalled and cannot be changed easily
Has limited processing power and limited electrical power and limited data storage
Has “intelligence”
Can be configured, personalized, “programmed”
MP3 player
Large “flash” memory to store songs
Songs (audio) stored in digital form, then compressed to a set of numbers that are of the “MP3” format
CPU runs program in main memory
Decompresses audio and generates “raw digital audio”
Gets user input from button
Displays information on screen
Digital-Analog converter generates audible sound waves and sends to speaker/headphones
GPS Navigator
Complex system with many components
GPS Radio
GPS signal processor
Map database
Processor to control display and compute routes, locations, points of interest
Video image processor to control actual screen
May contain several different CPUs in one package
Automobile Computers
Engine control computer
Advanced diagnostics
Simplification of the manufacture and design of cars
Reduction of the amount of wiring in cars
New safety features
New comfort and convenience features
Engine Control Computer (ECU)
Read sensors (temp, pedal position, exhaust) and control fuel injector timing and spark timing
Control engine fan and other actuators
Handle the CAN (communication area networking) that is becoming common in cars.
Other computers in car
There are more processors in the car other than ECU
ABS system
Climate control
Cruise control
Radio
Dashboard
Automatic doors, lights and such
Cars also have networks for “simplified wiring” as well as automotive control networks.
Automobile Networking
As multiple computing units get into cars, a networking standard is being used
CAN 2.0 is predominant
Functions
Communicate between subsystems
Reduce wires
Multiplexing standard
Network addressing
“multiple networks” coming in the future
[attachment=40313]
Normal everyday items contain computer chips, complete with CPU, memory, programs
Television, Entt. Center, Automobiles, Irrigation,
MP3, cell phones, GPS,
microwave, home alarms, thermostats,
network routers, game consoles
Special purpose machines contain computers
Manufacturing, metering, sensing,
ATM machines, kiosks
Medical Instruments, Aircraft, Satellites,
IMPACT
45 billion market in 2004, rising to $88 billion in 2009
Many more embedded processors per person, than general purpose processors
A cell phone may have 20-100 separate processors
Value of embedded electronics in Automobiles: 25% of total cost, to rise to 35% by 2015
Embedded market is 50 times the desktop market
Application Domains:
Automotive, Avionics, Industrial Automation, Telecommunication, Consumer Electronics, Medical, IT hardware
Cutting edge:
Multicore processors, Network on Chip, System on chip (e.g. the iPhone, PS-3)
Embedded Systems
A “special purpose” unit
e.g. simple cell phone (it does not run MS-Word)
Has a CPU, memory and programs that control mainly physical things
The program is preinstalled and cannot be changed easily
Has limited processing power and limited electrical power and limited data storage
Has “intelligence”
Can be configured, personalized, “programmed”
MP3 player
Large “flash” memory to store songs
Songs (audio) stored in digital form, then compressed to a set of numbers that are of the “MP3” format
CPU runs program in main memory
Decompresses audio and generates “raw digital audio”
Gets user input from button
Displays information on screen
Digital-Analog converter generates audible sound waves and sends to speaker/headphones
GPS Navigator
Complex system with many components
GPS Radio
GPS signal processor
Map database
Processor to control display and compute routes, locations, points of interest
Video image processor to control actual screen
May contain several different CPUs in one package
Automobile Computers
Engine control computer
Advanced diagnostics
Simplification of the manufacture and design of cars
Reduction of the amount of wiring in cars
New safety features
New comfort and convenience features
Engine Control Computer (ECU)
Read sensors (temp, pedal position, exhaust) and control fuel injector timing and spark timing
Control engine fan and other actuators
Handle the CAN (communication area networking) that is becoming common in cars.
Other computers in car
There are more processors in the car other than ECU
ABS system
Climate control
Cruise control
Radio
Dashboard
Automatic doors, lights and such
Cars also have networks for “simplified wiring” as well as automotive control networks.
Automobile Networking
As multiple computing units get into cars, a networking standard is being used
CAN 2.0 is predominant
Functions
Communicate between subsystems
Reduce wires
Multiplexing standard
Network addressing
“multiple networks” coming in the future