Abstract: A poultry raising system includes: an imaging unit configured to capture an image of an inside of a poultry house; and a monitoring unit configured to determine a variation in density of chickens present in a particular region in the image captured by the imaging unit, and monitor the variation determined. The particular region is at least part of the image.

Abstract: A poultry raising system includes: an imaging unit configured to capture an image of an inside of a poultry house; and a monitoring unit configured to determine a variation in density of chickens present in a particular region in the image captured by the imaging unit, and monitor the variation determined. The particular region is at least part of the image.

Abstract: The faucet includes a detector including: a frequency analyzer to convert a sensor signal into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a recognizer; and a database device, for storing sample data. The recognizer performs a recognition process of detecting a detection object based on detection data containing a frequency distribution of signals based on the signals of the individual filter banks. The recognizer performs the recognition process based on comparison between the detection data and the sample data.

Abstract: A sensor has a detector and a processing device. The detector is configured to output a digital value of a beat signal having a frequency difference between radio waves radiated and radio waves received. In the processing device, a frequency analyzer is configured to compute a frequency spectrum of the beat signal. A corrector therein is configured to fill a digital value to the frequency analyzer with zeros whose number corresponds to a difference between the bit-number of the detector on the output side and the bit-number of the frequency analyzer on the input side. A calculator therein is configured to find a peak frequency corresponding to a power peak value from the frequency spectrum computed with the frequency analyzer to convert the peak frequency into the distance to the object.

Abstract: A signal processing device (2) includes an amplifier (3), an A/D converter (4) and a signal processor (5). The amplifier (3) amplifies a sensor signal that is supplied from a radio wave sensor (1) and depends on a motion of an object. The A/D converter (4) converts the sensor signal amplified by the amplifier (3) into a digital sensor signal. The signal processor (5) converts the sensor signal output from the A/D converter (4) into a frequency-domain sensor signal by Discrete Cosine Transform processing, estimates a background signal contained in the frequency-domain sensor signal, based on an error signal obtained from the sensor signal and a reference signal which is white noise, and determines a filter coefficient according to the estimated background signal, thereby operating as an adaptive filter for removing the background signal from the sensor signal in the frequency domain.

Abstract: An objective would be to propose a toilet seat apparatus capable of detecting accurately various motions of a human body such as entering and leaving a restroom, sitting on and rising from a toilet seat. A human body detector (5) includes a frequency analyzer (52c), a recognizer (52e), and a database device (52i) storing sample data. The frequency analyzer (52c) converts a sensor signal into a frequency domain signal, and extracts signals of individual filter banks with different frequency bands. The recognizer (52e) has functions of detecting a human body entering a space where at least a toilet bowl (11) is installed and a human body of a person sitting on a toilet seat (12b) based on comparison between the sample data and detection data containing a frequency distribution of signals based on the signals of the individual filter banks (5a).

Abstract: The faucet includes a detector including: a frequency analyzer to convert a sensor signal into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a recognizer; and a database device, for storing sample data. The recognizer performs a recognition process of detecting a detection object based on detection data containing a frequency distribution of signals based on the signals of the individual filter banks. The recognizer performs the recognition process based on comparison between the detection data and the sample data.

Abstract: A signal processing device (2) includes an amplifier (3), an A/D converter (4) and a signal processor (5). The amplifier (3) amplifies a sensor signal that is supplied from a radio wave sensor (1) and depends on a motion of an object. The A/D converter (4) converts the sensor signal amplified by the amplifier (3) into a digital sensor signal. The signal processor (5) converts the sensor signal output from the A/D converter (4) into a frequency-domain sensor signal by Discrete Cosine Transform processing, estimates a background signal contained in the frequency-domain sensor signal, based on an error signal obtained from the sensor signal and a reference signal which is white noise, and determines a filter coefficient according to the estimated background signal, thereby operating as an adaptive filter for removing the background signal from the sensor signal in the frequency domain.

Abstract: The signal processing device in accordance with the present invention includes: a frequency analyzer to convert a sensor signal corresponding to a radio wave reflected by an object into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a normalizer to normalize intensities of the signal passing through the individual filter banks by a sum of the signals extracted by the frequency analyzer or a sum of intensities of signals passing through predetermined filter banks, and output normalized intensities; and a recognizer to perform a recognition process of identifying the object based on at least one of a frequency distribution and a component ratio of the normalized intensities calculated from the normalized intensities of the individual filter banks outputted from the normalizer.

Abstract: A radio receiving apparatus of the present invention is for receiving a radio signal having pulsating signals occurring at specific periods, wherein the radio receiving apparatus corrects signal levels received during communication in individual regions into which each of the aforementioned periods is divided based on signal levels received in the individual regions under conditions where the radio signal is not received. As a result of this correction, the radio receiving apparatus of the present invention can decrease the influence of noise having periodicity and improve reliability of communication.