PROBLEM TO BE SOLVED: To provide a usage notification system for a toilet booth that can reliably identify a presence or an absence of people or suspicious objects in the booth with a small number of detection modules that can accurately notify a usage state.SOLUTION: A detection module 103 is set to include a signal generating unit for generating a transmission waveform signal of which a frequency is continuously modulated in a predetermined modulation pattern above a toilet 201 in a toilet booth 200, a transmission unit for transmitting the microwave transmission wave frequency that is continuously modulated based on an input of the transmission waveform signal to a direction to view the toilet and its surroundings depend on a decision result, a receiving unit for receiving a reflected wave of the transmitted wave, and a mixer that mixes a distribution of signals of the transmission waveform and the received waveform of the receiving unit and outputs a standing wave beat signal based on a frequency difference between the transmission waveform signal and the received waveform signal as a detected signal. The detected signal is analyzed to determine a presence or absence of a user in the toilet booth, and the usage notification information of the toilet booth 200 is outputted.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】 少数の検知モジュールによりブース内の人や不審物等の有無を確実に特定でき、その使用状況を的確に報知することができるトイレブースの使用状況報知システムを提供する。【解決手段】トイレブース２００内の便器２０１の上方に、予め定められた変調パターンにて周波数が連続変調される送信波形信号を生成する信号生成部と、送信波形信号の入力に基づき周波数が連続変調されるマイクロ波送信波を、便器及びその周囲を見込む向きに送信する送信部と、送信波の反射波を受信する受信部と、送信波形信号の分配波形と受信部の受信波形信号とを混合し、送信波形信号と受信波形信号との周波数差に基づく定在波ビート信号を検知信号として出力する混合器とを備えた検知モジュール１０３を設置する。その検知信号を解析してトイレブース内の使用者の有無を判定し、該判定結果に基づいて、トイレブース２００の使用状況報知情報を出力する。【選択図】 図１
