2 What is Embedded Network System ? Extension of embedded
system As microcontroller becomes smaller and less cost, Systems
becomes more intelligent and more microcontroller are embedded ex.
automotive, robot, ship, refrigerator, air-conditioner, etc.
Representative application : intelligent automotive perceive
vehicle parameter such as velocity or position, and environmental
condition such as road condition or traffic condition be controlled
automatically based on inner and outer information Hence, the
number of electric components such as microcontroller, acceleration
sensor, radar sensor, and motor is increased
Slide 3
3 Current trend of intelligent vehicle
Slide 4
4 Why is embedded network system ? direct connection As the
number of microcontroller and sensor is increased, wiring cable for
connecting devices are rapidly increased. These cause deterioration
of system performance and difficulty of system maintenance is not
suitable due to exponentially increasing electrical cable
Slide 5
5 Embedded networking Devices are connected via single or
shared wiring cable ex. bus type Advantage of embedded networking
reduced wiring resource sharing design flexibility reliability
maintenance
Slide 6
6 Application of Embedded Networking System 1 In-vehicle
Networking System IVN (in-vehicle networking) interchange of
digital information between vehicle ECU (Electronic Control Unit)
Serial Communication Interface for Vehicle ECU Example of IVN First
to use IVN in S-Class S-Class passenger car High speed CAN : under
10 components Low speed CAN : under 25 components D2B/MOST : under
6 components
Slide 7
7 Protocols for IVN ApplicationSystemProtocols Body Control
Lamp, Power Windows Door Locks Power Seats Low Speed CAN, LIN, etc.
Diagnostic Failure Diagnosis Low Speed CAN Power train &
Chassis Control Engine Control Transmission Control Brake Control
Steering Control High Speed CAN, FlexRay, Real-time Ethernet, etc.
Information & ITS Navigation CD, DVD, Phone MOST, Real-time
Ethernet, etc. Safety Airbag Pretensioner Safe-by-Wire BST, DSI,
etc.
Slide 8
8 Volvo S80 series - Red bus : 250Kbps CAN - ABS : Antilock
Braking System - ECM : Engine Control Management - ETM : Electronic
Transmission Management - SAS : Steering Angle Sensor - TCM :
Throttle Control Management - CEM : Central Electronic Module(
Gateway) - Green bus : 125Kbps CAN - AUM : Audio Module - CCM :
Climate Control Module - DOM/PDM : Driver/ Passenger Door Module -
PHM : Phone Module - PSM : Power Seat Module - REM : Rear
Electronics Module - RTI : Road Traffic Information -SRS : Safety
Restraint system - SWM : Steering Wheel Module - UEM : Upper
Electronic Module
Slide 9
9 Unified Chassis Control (UCC) system CDC control valve EHPS
unit Wheel acceleration sensor ESP controller Acceleration sensor
CDC controller TPMS controller Sport switch CDC control valve
Steering angle sensor and CAN-BUS interface Body acceleration
sensor
Slide 10
10 Typical IVN
Slide 11
11 Application of Embedded Networking System 2 Industrial
Networking System Fieldbus developed for communication of various
field devices such as actuator, sensor in manufacturing and control
systems IEC 61158 includes various type fieldbus such as Foundation
Fieldbus H1, ControlNet, Profibus, P-Net, Foundation Fieldbus HSE,
SwiftNet, WorldFIP, Interbus-S Networking for robot reliable and
high-speed communication is necessary ex. 1msec between motion
controller and servo driver for motor EtherCAT
Slide 12
12 Networking for Factory Device level Communication among
field devices such as controller, switch, actuator, sensor, bar
code reader, etc. Cell level Communication among PLC (Programmable
Logic Controller), robot, NC (Numerical Control) machine, etc.
Plant level Communication among engineering such as CAD (Computer
Aided Design), production management such as CAM (Computer Aided
Manufacturing), business administration such as inventory or
sales
Slide 13
13 Profibus-FMS WorldFIP DeviceNet Ethernet Profibus-DP
Foundation Fieldbus H1 CAN Ethernet
Slide 14
14 Application of Embedded Networking System 3 Home Networking
System home automation/home networking system can monitor and
control home appliances such as air-conditioner, microwave, and
home automation devices such as light, gas valve by remote device
such as PDA, PCS Goals of smart home Comport (home automation/home
networking) Enjoyment (home entertainment) Convenience (contents)
Fusion technology IT + BT + NT + ET + CT digital home appliance +
internet + mechatronics
Slide 15
15 Architecture of home networking system
Slide 16
16 Application of Embedded Networking System 4 Ubiquitous
Networking Ubiquitous Computing vs. Ubiquitous Network Mark Weisers
Ubiquitous Computing (Xerox PARC: Palo Alto Research Center)
Existing or being everywhere at the same time (1988) Computing
access will be everywhere (1993) Japans Ubiquitous Network (TRON
project) Connecting everything and everywhere (1999) Koreas
Ubiquitous Sensor Network A communication environment such that
everyone can easily use net works, terminals and contents without
any stress (2003)
18 Computing paradigm 2 nd Wave 3 rd Wave 1 st Wave computer
> human flowerpot vending machine digital TV bed curtain
bathroom building computer = humancomputer < human one computer
to many humanone computer to one humanone human to many invisible
computer
Slide 19
19 Key element of USN (Ubiquitous Sensor Network) USN Embedded
Systems (small, processing Storage and control) Computing
middleware (pro-active, context-awareness) Wireless Networking
(self-organized, power-aware communication) Sensor/Device
(Mass-produced, low-power, Short range comm, Sensor &
actuator)
Slide 20
20 Example of ubiquitous computing (1) TPMS (tire pressure
monitoring system) Telematics (Mobile in Vehicle) system