US 5,313,104 AGranted

Vehicle control system over a plurality of transmission lines

AssigneeMazda Motor Corporation

InventorsMineharu Shibata, Yasuhiko Matsumura, Nagahisa Fujita, Masao Hideshima

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Abstract

A vehicle control system having plurality of control units, as well as sensors and actuators having a comparatively high degree of importance in terms of control by these control units, which are separately connected to first and second transmission lines. Sensors and actuators having a comparatively low degree of importance are assigned to the second transmission line. The outputs from the comparatively important sensors enter the respective control units directly via the first transmission line. A back-up program for backing up one control unit in case of failure is stored beforehand in another control unit. If the control unit fails, the other control unit performs back-up control to take over its tasks.

Claims5

Dependent claims

A vehicle control system comprising:

a first transmission line;
a second transmission line;
a first actuator and a first sensor which are separately and independently connected to said first transmission line;
a second actuator and a second sensor which are separately and independently connected to said second transmission line;
a control unit which is connected to said first transmission line, controls said first actuator by inputting a signal from said first sensor;
and
a plurality of control units, which are commonly connected to said first transmission line and said second transmission line and control said second actuator by inputting a signal from said second sensor, wherein said plurality of control units each backs up other control units for taking over their control when any of the other control units develop a fault.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/014,008Filed 5 Feb 1993 · continuation
Priority: JP 2-21344810 Aug 1990
Granted: 17 May 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B60R 16/0315
For supply of electrical power to vehicle subsystems or for: using multiplexing techniques
B60G 17/0195
The regulating means comprising electric or electronic elements: characterised by the regulation being combined with other vehicle control systems
F02D 41/266
Using computer, e.g. microprocessor: the computer being backed-up or assisted by another circuit, e.g. analogue
G08C 25/00
Arrangements for preventing or correcting errors