Vehicular Embedded System Architecture

Chapter 4

Chung-Ping Young, National Cheng Kung University, Taiwan, R.O.C.

Presentation:Nyoman Wira Prasetya

TransportationAspect: Human Object

Invention of efficient transportation

Reduce time and labor

More leisure time

Transportation Demand Mobility Safety Comfort Convenience Energy Consumption

Safety Active SafetyPrevent the happening of potential accidents

Passive SafetyHelp driver and passengers lower injury and death rate in accidents

Networked Embedded System

Aspect of Embedded System

Powertrain Consists of engine control, automatic transmissions, traction control system (TCS) and an adaptive cruise control (ACC)

Chassis Enhance vehicle stability and steerability

Aspect of Embedded System

Safety When the automotive system sensesan impact, the passive safety systems activate

Body and Comfort Control Provide occupants convenience and comfort features, such as power windows, door lock, wiper, ventilation, heater, air-conditioning, room lamp, and adaptive front lighting

Aspect of Embedded System

Central Console User interface to the automotive system. It involves dashboard projection of the vehicle status and button/knob to control the operation and setting

Infotainment Provides the contents of information and entertainment to occupants. Entertainment involves audio, video, radio, digital TV, or gaming

Electronic Control Unit

Basically a processor or computing system, integrated with a data acquisition device or an electromechanical driver.

ECU Implementation Powertrain →Fuel Injection

ABS (Anti-lock Breaking System)→ prevent wheel locking

TCS (Traction Control System)→Prevent spinning

Sensors1. Accelerometer→Air bag system2. Yaw-rate/Gyroscope→turning

movement is monitored and is compared with the angle of the steering wheel and vehicle speed

3. Pressure→Vaporized gasoline leak detection

Sensors3. Temperature→monitoring engine,

coolant, gear-box, fuel

4. Radar→collision avoidance by finding the distance to the preceding vehicle

Sensors6. Video→night-vision, object

detection7. Wheelspeed→The ABS and TCS,

prevents wheel locking and spinning

Sensors

6. Streering-Angle→ detect oversteer and understeer

7. Torque→Fuel injection, TCS8. Chemical→detect the quality of

liquids, such as engine oil, gear-box oil, fuel, and battery liquid

Storage Device Music Video CCTV video GPS maps

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