Operation recorder for motor vehicle safety device

Details Operation recorder for motor vehicle safety device Operation recorder for motor vehicle safety device

1974-07-30

1976-04-06

Caldwell, John W.

Communications: electrical

Selective

Having indication or alarm

180103A, 280150AB, 340248A, G08B 2100

Patent

active

039493571

ABSTRACT:
An operation recorder to record a malfunction of a safety device or to record a proper function of the safety device comprises an AND-output gate. The AND-output gate is connected at its input side with the outputs of first and second monostable-multivibrators and at its output side to a memory. The first monostable-multivibrator normally generates a logical one output and a logical zero output signal, when it is triggered by the output of a collision sensor, for 10 to 100 milliseconds. The second monostable-multivibrator normally generates a logical zero output signal and a logical one output signal, when a safety device is actuated, for relatively shorter time than 10 to 100 milliseconds. The AND-output gate supplies a logical one output to the memory to generate the same when it receives logical one input signals.

REFERENCES:
patent: 3622974 (1971-11-01), Best et al.
patent: 3629816 (1971-12-01), Gillund
patent: 3849759 (1974-11-01), Hosaka et al.

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