Circuit arrangement for periodically testing the operating relia

Details Circuit arrangement for periodically testing the operating relia Circuit arrangement for periodically testing the operating relia

1977-07-11

1978-08-15

Kunin, Stephen G.

Fluid-pressure and analogous brake systems

Pipeless valves

340 52B, 340515, B60T 800

Patent

active

041068203

ABSTRACT:
A checking circuit for periodically monitoring the electronic operating reliability of a vehicle antiskid control system during periods of operation, as well as prior to operation, by injecting a periodic test pulse into the system control channel. An evaluation circuit detects the transmission of the test pulse by the control channel and output amplifier as an indication of the ability of the electronic devices to effect a subsequent energization of the system modulator valve at the time of de-energization thereof, or de-energization of the system modulator valve at the time of energization thereof. A warning device is activated in the absence of a test pulse transmission within a predetermined time duration following generation thereof.

REFERENCES:
patent: 3806202 (1974-04-01), Ochiai
patent: 3818433 (1974-06-01), Okamoto et al.

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