Status discriminating apparatus of human, animal, machine or the like using ultrasonic vibration detecting sensor, and status discriminating method of human, animal, machine or the like using the same
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United States of America Patent
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Nov 6, 2007
Grant Date -
Nov 25, 2004
app pub date -
Nov 24, 2003
filing date -
Jan 17, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A human or other status discriminating apparatus includes an ultrasonic vibration detecting sensor comprising a container main body, a liquid packed tightly in the container main body, and an ultrasonic vibrator for transmitting ultrasonic waves into the liquid and receiving ultrasonic waves reflected from the liquid surface, to detect behavior of a subject, an ultrasonic transmission and reception control device including an ultrasonic transmitter/receiver, a signal converter, and a microcomputer, for issuing a transmission signal at specific time intervals to the ultrasonic detecting sensor, receiving a reception signal at specific time intervals from the ultrasonic detecting sensor, and calculating risk associated with the detection object from the change of maximum amplitude of the input reception signal, and a cable for coupling the ultrasonic detecting sensor and ultrasonic transmission and reception control device, and forming an input and output passage of transmission signal and reception signal.
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