Transmitting apparatus, sound sensor and autonomous...

Details Transmitting apparatus, sound sensor and autonomous... Transmitting apparatus, sound sensor and autonomous...

2006-08-29

2006-08-29

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S319000, C367S117000, C367S118000

Reexamination Certificate

active

07098579

ABSTRACT:
A driving circuit of a transmitting apparatus drives a piezoelectric element in a frequency band different from a resonance frequency at which a vibration system including the piezoelectric element resonates the most strongly. A driving circuit of a sound sensor drives the piezoelectric element for transmitting or receiving an acoustic wave in a frequency band different from a resonance frequency at which a vibration system including the piezoelectric element resonates the most strongly. Such a transmitting apparatus is mounted as a transmitting apparatus of a sound sensor to thereby realize the sound sensor with a small measurement error. The sound sensor is adopted for traveling control and steering control of an autonomous traveling vehicle to thereby enable an autonomous traveling vehicle capable of stopping in the vicinity of an obstacle to be realized.

REFERENCES:
patent: 4782550 (1988-11-01), Jacobs
patent: 10-290495 (1998-10-01), None
patent: 10290495 (1998-10-01), None

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