Abstract: An object detection device comprises an active sensor, an amplifying circuit configured to divide and amplify a sensor signal outputted from said active sensor with respect to each a plurality of frequency bands through each amplifier, and a determining unit determining the presence or absence of a detection target object by comparing an output of said amplifying circuit with a predetermined threshold value. A noise determining unit controls a switching circuit so as to turn off a switch inserted between said determining unit and an amplifier having a band pass including a noise of a particular frequency, when determining that the noise of the particular frequency is produced constantly by using an analysis result outputted from a frequency analyzer detecting intensity of each frequency of the sensor signal.

Abstract: An illumination system includes lighting apparatuses (20), a camera (11), an image processing unit (12) (person position detection unit), and a lighting control unit (14) and a storage unit (13) (control unit). The illumination apparatuses (20) are placed on a ceiling surface (C), and each include a first light source (24) and a second light source (25) that irradiate a floor surface (F) and the ceiling surface (C) with light, respectively. The control unit controls an illumination apparatus (20b2) corresponding to a person (P)'s position detected by the person position detection unit among the illumination apparatuses (20) so as to turn on the first light source (24). The control unit controls at least one of one or more illumination apparatuses (20) that are each adjacent to the illumination apparatus (20b2) so as not to turn on the first light source (24) and turn off the second light source (25).

Abstract: An illumination system includes lighting apparatuses (20), a camera (11), an image processing unit (12) (person position detection unit), and a lighting control unit (14) and a storage unit (13) (control unit). The illumination apparatuses (20) are placed on a ceiling surface (C), and each include a first light source (24) and a second light source (25) that irradiate a floor surface (F) and the ceiling surface (C) with light, respectively. The control unit controls an illumination apparatus (20b2) corresponding to a person (P)'s position detected by the person position detection unit among the illumination apparatuses (20) so as to turn on the first light source (24). The control unit controls at least one of one or more illumination apparatuses (20) that are each adjacent to the illumination apparatus (20b2) so as not to turn on the first light source (24) and turn off the second light source (25).

Abstract: An object detection device comprises an active sensor, an amplifying circuit configured to divide and amplify a sensor signal outputted from said active sensor with respect to each a plurality of frequency bands through each amplifier, and a determining unit determining the presence or absence of a detection target object by comparing an output of said amplifying circuit with a predetermined threshold value. A noise determining unit controls a switching circuit so as to turn off a switch inserted between said determining unit and an amplifier having a band pass including a noise of a particular frequency, when determining that the noise of the particular frequency is produced constantly by using an analysis result outputted from a frequency analyzer detecting intensity of each frequency of the sensor signal.