VEHICLE AIR CUSHION ACTUATION AND MONITORING CIRCUIT

摘要

A vehicle air cushion actuation and monitoring circuit for preventing injury to passengers in the event of a collision. The actuation circuit includes an electrically operated actuator connected between first and second normally open acceleration-responsive switches which are in turn connected across a source of direct current firing potential. Resistors connected in parallel with the switches establish a reference potential at a junction between one of the switches and the actuator which is monitored by a detector which provides an output which energizes a lamp when the voltage at the junction rises above or drops below the reference potential by predetermined amounts. The output of the detector also activates a latch circuit which maintains the detector output. A capacitor is charged from a constant current source in response to an output from the detector and a double timing circuit responsive to the charging of the capacitor controls a latch interrupt circuit and a permanent recorder.