PROBLEM TO BE SOLVED: To provide an optical beacon device that can reduce power consumption.SOLUTION: An optical beacon device 10 performs light modulation control on a light projection unit of a light emitter and receiver 30 in accordance with given conditions. For example, when an amount of ambient light detected by an optical sensor of a light receiving unit 36 is small, the light projection unit is controlled so as to reduce projected light. When an amount of light received by the light receiving unit 36 is small, the light projection unit is controlled so as to reduce projected light. In addition, when a light reception level of uplink light in the light receiving unit 36 is low, the light projection unit is controlled so as to reduce projected light. In addition, during a night time zone, the light projection unit is controlled so as to reduce projected light.

    【課題】光ビーコン装置における消費電力の低減を図ること。【解決手段】光ビーコン装置10は、所定条件に応じて投受光器30の投光部を調光制御する。例えば、投受光部36が有する光センサによる環境光の検出光量が少ない場合に、投光部を減光させる。また、受光部36による受光量が少ない場合に、投光部を減光させる。また、受光部36におけるアップリンク光の受光レベルが低い場合に、投光部を減光させる。また、夜間の時間帯に、投光部を減光させる。【選択図】図1


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    Title :

    OPTICAL BEACON DEVICE


    Additional title:

    光ビーコン装置


    Contributors:

    Publication date :

    2015-09-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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