To provide a technology that can reliably receive a second uplink signal transmitted from a vehicle.SOLUTION: A light emitting receiving device 30 includes an optical communication unit 40 that transmits a downlink signal and receives an uplink signal to and from a vehicle traveling in a predetermined lane to perform road-to-vehicle communication, and a vehicle sensing unit 50 that detects the vehicle by emitting vehicle sensing light and receiving reflected light on the downstream side of a communication area related to the road-to-vehicle communication in the predetermined lane, and a second detection unit of the optical communication unit 40 detects that a second uplink signal has begun to be received. Then, a light emission stop control unit of the vehicle sensing unit 50 performs first light emission stop control for stopping the light emission of the vehicle sensing light by the vehicle sensing unit 50 in response to the detection by the second detection unit.SELECTED DRAWING: Figure 5

    【課題】車両から送信される第2アップリンク信号を確実に受信することができる技術の提供。【解決手段】所定車線を走行する車両との間でダウンリンク信号の送信およびアップリンク信号の受信を行って路車間通信を行う光通信部40と、所定車線の路車間通信に係る通信領域の下流側において車両感知光の発光および反射光の受光を行って車両を感知する車両感知部50と、を備えた投受光器30において、光通信部40の第2検知部は、第2アップリンク信号が受信され始めたことを検知する。そして、車両感知部50の発光停止制御部は、第2検知部による検知に応じて、車両感知部50による車両感知光の発光を停止する第1の発光停止制御を行う。【選択図】図5


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    Title :

    LIGHT EMITTING RECEIVING DEVICE


    Additional title:

    投受光器


    Contributors:

    Publication date :

    2020-10-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS




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