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

B - Operations, Transporting

60

K

317/11, 342/47

B60K 28/00 (2006.01) B60R 21/01 (2006.01) G01R 31/00 (2006.01)

Patent

CA 1287869

ABSTRACT OF THE DISCLOSURE 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.

524119

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