Excavating
Patent
1994-10-03
1996-12-17
Beausoliel, Jr., Robert W.
Excavating
371 61, 36442404, 346 33D, 324110, 377 19, 377 20, 377 241, 340438, 340439, G01D 900, G01D 300, G06F 1100
Patent
active
055861300
ABSTRACT:
A system and method for detecting fault conditions within a vehicle recording device are disclosed herein. The fault detection technique may be implemented in a vehicle in which are incorporated one or more vehicle sensors for monitoring one or more operational parameters of the vehicle. A recording device disposed within the vehicle is used to collect vehicle operation data produced by the one or more vehicle sensors.
The fault detection technique of the invention contemplates storing a current time value at regular intervals during periods in which the recording device is provided with a source of main power. Time differences are determined between consecutive ones of the stored time values, and the time differences compared to a predetermined maximum value. A power loss fault condition is registered when at least one of the time differences exceeds the predetermined maximum value. In a preferred implementation an indication of the existence of the power loss fault condition is transmitted to a central control station.
Fault detection may also be effected within a vehicle recording device by repeatedly storing a cumulative value of an operational parameter registered by a sensor unit incorporated within the vehicle. The last stored cumulative value is compared to a cumulative value currently registered the sensor unit, and difference value is determined therebetween. A fault condition is indicated when the difference value exceeds a predetermined maximum value. Again, an indication of the existence of the fault condition may then be transmitted to a central control station.
REFERENCES:
patent: 4067061 (1978-01-01), Juhasz
patent: 4188618 (1980-02-01), Weisbart
patent: 4258421 (1981-03-01), Juhasz et al.
patent: 4595932 (1986-06-01), Ruhl
patent: 4656488 (1987-04-01), Ruhl
patent: 4705970 (1987-11-01), Turnpaugh
patent: 4941136 (1990-07-01), Breitung, II
patent: 5253224 (1993-10-01), Van Doesburg
patent: 5303163 (1994-04-01), Ebaugh et al.
patent: 5359528 (1994-10-01), Haendel et al.
Beausoliel, Jr. Robert W.
Miller Russell B.
Qualcomm Incorporated
Vales Phillip F.
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