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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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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Citations
12 Claims
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1-5. -5. (canceled).
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6. A status discriminating apparatus for a human, an animal, or a machine, the apparatus comprising:
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(a) an ultrasonic vibration detecting sensor comprising;
(i) a container main body;
(ii) a liquid packed tightly in the container main body; and
(iii) an ultrasonic vibrator arranged to transmit an ultrasonic wave into the liquid and to receive an ultrasonic wave reflected from the liquid surface, which serves to detect behavior of a detection object;
(b) an ultrasonic transmission and reception control device comprising;
(i) an ultrasonic transmitter/receiver;
(ii) a signal converter operably connected to the ultrasonic transmitter/receiver; and
(iii) a microcomputer operably connected to the signal converter so the microcomputer issues a transmission signal, at specific time intervals, to the ultrasonic vibration detecting sensor, and the microcomputer receives a reception signal, at specific time intervals, from the ultrasonic detecting sensor, and wherein the microcomputer calculates a risk associated with the detection object from a change in maximum amplitude of the received reception signal; and
(c) a cable coupling the ultrasonic detecting sensor with the ultrasonic transmission and reception control device so as to provide an input and output passage for the transmission signal and reception signal. - View Dependent Claims (7, 8)
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9. A status discriminating method executable by a status discriminating apparatus for a human, an animal, or a machine, wherein the apparatus comprises a microcomputer operatively connected to transmit and receive signals with an ultrasonic vibration detecting sensor, the method comprising the steps of:
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(a) detecting vibration caused by behavior of a detection object using the ultrasonic vibration detecting sensor, which in response to vibration detection sends a reception signal to the microcomputer of the status discriminating apparatus; and
(b) analyzing the reception signal sent by the ultrasonic vibration detecting sensor to the microcomputer, wherein the reception signal analysis comprises the steps of;
(i) compiling time series data of maximum amplitude values of reception signals detected at specific time intervals by the ultrasonic vibration detecting sensor;
(ii) normalizing the time series data to form analytical data;
(iii) calculating a standard deviation about a change point of maximum amplitude values in a specific number of reception signals of the analytical data;
(iv) extracting an ultrasonic wave spectrum peak by fast Fourier transform of a waveform of the analytical data;
(v) calculating risk by applying the calculated standard deviation and extracted spectrum peak to a fuzzy If-Then rule; and
(vi) discriminating normal or abnormal status of the detection object from the calculated value of the risk. - View Dependent Claims (10, 11, 12)
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Specification