PROBLEM TO BE SOLVED: To provide a monitored person monitoring apparatus which effectively utilizes a Doppler sensor unit according to a position of the monitored person.SOLUTION: A monitored person monitoring apparatus that monitors a monitored person 2, comprises: a Doppler sensor unit 40 for outputting a Doppler signal of a Doppler frequency component based on a radiated transmission wave and a reflected wave of a transmitted wave and for acquiring a monitoring signal for monitoring the monitored person a camera 60 for photographing an image of a predetermined area including the monitored person to output a photographing signal a range changing unit for changing a size of a radiation range of the transmission wave a first determination unit 61 for determining a position of the monitored person based on the Doppler signal a second determination unit 62 for determining a position of the monitored person based on the photographing signal and a range control unit 63 for controlling the range changing unit according to the position of the monitored person determined by the first determining unit or the position of the monitored person determined by the second determining unit to change the size of the radiation range of the transmitted wave.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2018,JPO&INPIT【課題】被監視者の位置に応じて、ドップラセンサ部を有効に活用する被監視者監視装置を提供する。【解決手段】被監視者2を監視する被監視者監視装置であって、放射した送信波と送信波の反射波とに基づいてドップラ周波数成分のドップラ信号を出力し、被監視者を監視するための監視信号を取得するドップラセンサ部40と、被監視者を含む所定領域を撮像して撮像信号を出力するカメラ60と、送信波の放射範囲の大きさを変更する範囲変更部と、ドップラ信号に基づき、被監視者の位置を判定する第1判定部61と、撮像信号に基づき、被監視者の位置を判定する第2判定部62と、第1判定部により判定された被監視者の位置、又は第2判定部により判定された被監視者の位置に応じて、範囲変更部を制御して、送信波の放射範囲の大きさを変更する範囲制御部63と、を備えるものである。【選択図】図3
