Doze alarm for driver using enclosed air sound sensor

Details Doze alarm for driver using enclosed air sound sensor Doze alarm for driver using enclosed air sound sensor

2006-03-21

2006-03-21

Mullen, Jr., Thomas J. (Department: 2632)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S429000, C340S439000

Reexamination Certificate

active

07015818

ABSTRACT:
A closed pneumatic sound sensor is incorporated in a driver's seat and catches a signal representative of a movement of the body of the driver, and a continuation time period within which the level of the signal does not reach a fixed level is detected.Simultaneously, a signal which is generated only when the vehicle is running is caught from the vehicle, and the two signals are compared with each other by an arithmetic operation circuit. Only when both of the signals are present and a particular tendency appears in the continuation time period of the signal representative of a movement of the body, an alarm is generated.A less expensive doze-at-the-wheel alarming apparatus which does not require cumbersome mounting and does not operate when the vehicle is not running is provided.

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