Method for checking the operability of safety system for vehicle

Details Method for checking the operability of safety system for vehicle Method for checking the operability of safety system for vehicle

1991-08-31

1993-01-19

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340436, 340514, 280734, 280735, 180282, B60Q 100

Patent

active

051810115

ABSTRACT:
A method for checking the operability of a vehicular safety system which comprises an acceleration sensor for providing a pair of differential output signals, a first and second vehicle collision discriminators having a differential amplifier responsive to the pair of differential output signals, respectively, a pair of current controllers responsive to the first and second distriminators, respectively, whereby a firing current is supplied to a firing actuator through the pair of current controllers when the vehicle collision is detected. The method is characterized in that one of the differential amplifier is changed in arrangement so as to be able to respond to an in-phase input, and a test signal for making the acceleration sensor produce pair of check signals in phase is applied to the acceleration sensor. Then the operability of the safety system is checked on the basis of the potential developed at the firing actuator at that time without the activation of the actuator.

REFERENCES:
patent: 4950914 (1990-08-01), Kurihara et al.
patent: 4950915 (1990-08-01), Spies et al.
patent: 5018763 (1991-05-01), Okano et al.
patent: 5081587 (1992-01-01), Okano
patent: 5083276 (1992-01-01), Okano et al.
patent: 5122954 (1992-06-01), Okano
patent: 49990884 (1991-02-01), McCurdy et al.

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