Collision determining circuit having a starting signal generatin

Details Collision determining circuit having a starting signal generatin Collision determining circuit having a starting signal generatin

1992-01-10

1993-10-26

Pellinen, A. D.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

340436, 36442405, B60R 2132

Patent

active

052569047

ABSTRACT:
In a collision determining circuit designed to operate an air bag system or a belt retracting system based on an acceleration detected by an acceleration sensor in a vehicle, an acceleration signal output by an electric acceleration sensor is integrated in a passenger inertial speed calculation device to calculate a passenger inertial speed. At the same time, a power of the acceleration signal, filtered in a filter in a frequency range of 100 to 200 Hz, is calculated in a power calculation device. When at least one of the passenger inertial speed and the power exceeds a reference value, a starting signal generating circuit outputs a starting signal to ignite a squib for inflating the air bag system or for activating the belt retracting system. This ensures that even if the vehicle collides angularly against an obstacle, the starting signal can be properly produced without delay.

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patent: 5067745 (1909-11-01), Yoshikawa

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