Control system for vehicle safety device

Details Control system for vehicle safety device Control system for vehicle safety device

1991-01-18

1993-01-26

Pellinen, A. D.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

280735, 340438, 36442405, B60R 2132, B60R 2100

Patent

active

051824590

ABSTRACT:
A control system for a vehicle safety device includes an acceleration sensing circuit, an analog collision detection system, a digital collision detection system, and a drive circuit which operates the vehicle safety device when the drive circuit simultaneously receives collision detection signals respectively from both of the analog and digital collision detection systems. A microcomputer of the digital collision detection system outputs test pulses to the acceleration sensing circuit, and checks at least one of the output of an integrating circuit of the analog collision detection system and an output of a comparator circuit of the analog collision detection system so as to detect a malfunction of the analog collision detection system, the outputs of the integrating circuit and the comparator circuit being produced in response to the test pulse.

REFERENCES:
patent: 4836024 (1989-06-01), Woehrl et al.
patent: 4845377 (1989-07-01), Swart
patent: 4853623 (1989-08-01), Sterler et al.
patent: 4873452 (1989-10-01), Morota et al.
patent: 4950914 (1990-08-01), Kurihara et al.
patent: 4985835 (1991-01-01), Sterler et al.
patent: 5038134 (1991-08-01), Kondo et al.

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