| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor device capable of reducing erroneous detection caused from a movement of an object other than a detection target.SOLUTION: A signal processor 2 of a sensor device Se includes: a frequency analysis unit 5 that converts a sensor signal output from an A/D converter 4 into a signal in a frequency region to extract as signals for each filter bank in a filter bank group each having different frequency band; a standardization unit 6 that standardizes the field strength of the signals each has passed through the filter banks; a first recognition unit 7a that performs recognition processing to recognize an object based on the frequency distribution determined based on a standardization field strength of each filter bank; a background signal removal unit 10 that removes a background signal from the signals passed through the filter bank; and a second recognition unit 7b that, when the first recognition unit 7a identifies the object, identifies a steady background signal based on at least one of a frequency distribution characteristic which is determined from the standardization field strength of each filter bank and a characteristic of time-continuous frequency distribution. |
