PROBLEM TO BE SOLVED: To provide a rain sensor with which it is possible to prevent a wiper from erroneously operating when light of a short emission time is entered.SOLUTION: A processing unit 130 performs a light emission process of causing pulse light to be emitted in succession from a light-emitting element 110, a computation process of acquiring a difference in received light value between pre-emission timing and light-emission timing as sensor output for each pulse light, an abnormality determination process of determining the presence of abnormality in the sensor output, and a control process of controlling the operation of a wiper device 300 of a vehicle on the basis of the sensor output processed in the abnormality determination process. The processing unit 130 performs a comparison process of acquiring a difference value between the previous value and the present value of sensor output, determining that the present value is a normal value when the difference value does not exceed an abnormality determination value, and selecting the present value as sensor output, while determining that the present value is an abnormal value when the difference value exceeds the abnormality determination value and preventing the present value from being used in the control process.SELECTED DRAWING: Figure 3

    【課題】発光時間が短い光が入射した場合にワイパを誤作動させないようにすることができるレインセンサを提供する。【解決手段】処理部130は、発光素子110からパルス光を連続して発光させる発光処理と、発光前のタイミングと発光タイミングとの受光値の差分をパルス光毎にセンサ出力として取得する演算処理と、センサ出力の異常の有無を判定する異常判定処理と、異常判定処理によって処理されたセンサ出力に基づいて車両のワイパ装置300の動作を制御する制御処理と、を行う。処理部130は、異常判定処理において、センサ出力の前回値と今回値との差分値を取得し、差分値が異常判定値を超えない場合は今回値が正常値であると判定して当該今回値をセンサ出力とする一方、差分値が異常判定値を超える場合は今回値が異常値であると判定して当該今回値が制御処理に使用されないようにする比較処理を行う。【選択図】図3


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    Title :

    RAIN SENSOR


    Additional title:

    レインセンサ


    Contributors:

    Publication date :

    2018-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / G01W METEOROLOGY , Meteorologie



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