Control system for vehicle safety device

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

1991-02-22

1993-05-04

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

180274, 280735, 340436, B60R 2132

Patent

active

052084841

ABSTRACT:
A control system for a vehicle safety device includes a pair of acceleration sensing circuits. The outputs of the acceleration sensing circuits correspond to a deceleration of the vehicle in a direction of running of a vehicle, and are in opposite phase with each other. A differential calculation device effects calculation in accordance with the difference between the outputs of the acceleration sensing circuits, so as to cause noises, applied to the acceleration sensing circuits, to cancel each other, thereby preventing an inadvertent activation of the vehicle safety device due to such noises. According to another alternative construction, in order to prevent the inadvertent activation of the vehicle safety device due to the noises, the opposite-phase outputs of the pair of acceleration sensing circuits are integrated by a pair of integrating circuits, and a pair of collision judgment circuits compare the outputs of the integrating circuits with respective threshold levels so as to judge whether a collision has occurred.

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patent: 5037129 (1991-08-01), Fritz et al.
patent: 5083276 (1992-01-01), Okano et al.

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