Motivation
Introductory Overview
Point-to-point networking
Sensors and actuators are directly linked to
an ECU by individual wires
Increasing degree of electronic functionality
among others leads to:
u High cost (tailoring, wires, connectors)
u Weight and space problems
u High fault liability, bad diagnostics
u Low flexibility to extend a system
S
ECUECU
ECU
CAN
…
S S
A
…
A A
A
ECU
ECU
ECUECU
ECU
CAN
ECU
ECU
S
…
S S
A
A A
A
Bus network
Sensors and actuators are linked to an
ECU via one common communication
medium (bus)
Switching to bus communication and
networking has these advantages:
u Reduction of costs
u Reduction of weight and space
u Low fault liability, good diagnostics
u High flexibility to extend a system
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