Circuit for supervising contact for passenger protective device

Details Circuit for supervising contact for passenger protective device Circuit for supervising contact for passenger protective device

1986-12-01

1987-10-20

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

307 10R, 307 10SB, 340 52R, 340 52H, 180274, 280735, B60K 2800

Patent

active

047016280

ABSTRACT:
A contact supervising circuit for a rider protective device, in which an ignition switch, a collision sensor, and a detonator are connected in series to a DC power source, a monitoring resistor is connected in parallel to the collision sensor, and a monitoring switch is connected in series to the monitoring resistor. The device comprises delay means for closing a contact of the monitoring switch with a period of delay to interrupt a monitoring current flowing from the DC power source through the monitoring resistor for a predetermined period of time after turning-on of the ignition switch. The device further comprises assertion means for supervising the monitoring current and for asserting the fact that the monitoring current does not flow during the period of delay in which the closing the contact of the monitoring switch is delayed by the delay means.

REFERENCES:
patent: 3622974 (1971-11-01), Best
patent: 3629816 (1971-12-01), Gillund
patent: 3633159 (1972-01-01), Dillman
patent: 3668627 (1972-06-01), Brainerd
patent: 3949357 (1976-04-01), Hosaka
patent: 4087782 (1982-05-01), Oishi et al.
patent: 4220871 (1980-09-01), Yasui et al.
patent: 4222030 (1980-09-01), Yasui et al.

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