Apparatus and method for determining the existence of an abnorma

Details Apparatus and method for determining the existence of an abnorma Apparatus and method for determining the existence of an abnorma

1989-01-04

1991-09-03

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340436, 307 101, 280734, 280735, B60Q 100, B60R 2132

Patent

active

050458353

ABSTRACT:
A vehicle operator protection system includes an actuating device, a battery for supplying the actuating device with electric power, and a backup capacitor charged by the battery and supplying power to the actuating device when the battery becomes inoperable. It further includes a switch for cutting off the power supply from the battery and a determining circuit for detecting a discharging condition of the backup capacitor after it has been cut off from the power supply with the switch to determine the existence of an abnormality in the backup capacitor and the actuating device. Through the detection of the discharging condition of the backup capacitor, determination of the existence of an abnormality, based on the intended function of the backup capacitor, can be achieved.

REFERENCES:
patent: 3629816 (1971-12-01), Gillund
patent: 4278971 (1981-07-01), Yasui et al.
patent: 4835513 (1989-05-01), McCurdy et al.

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