SYSTEM FOR DETECTION OF RADIO WAVE INTERFERENCE ALONG ROUTE AND ON-VEHICLE DEVICE, AND RADIO WAVE INTERFERENCE DETECTION METHOD

PROBLEM TO BE SOLVED: To achieve a radio wave interference detection system capable of detecting a radio wave interference along a route with high positional accuracy, and outputting a cause for occurrence of the radio wave interference.SOLUTION: An on-vehicle device (20) mounted on a vehicle which...

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Hauptverfasser: NAKAI TADASHI, HATTORI TETSUNORI, TATEISHI YUKIYA, KIMURA HISAFUMI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To achieve a radio wave interference detection system capable of detecting a radio wave interference along a route with high positional accuracy, and outputting a cause for occurrence of the radio wave interference.SOLUTION: An on-vehicle device (20) mounted on a vehicle which travels on a route where a radio base station which transmits a radio signal is arranged for detecting a radio wave interference along a route comprises: a radio wave measurement device for measuring intensity of a peripheral radio wave; a positioning device for acquiring the position of the vehicle; a storage device; and a control device. The control device controls the radio wave measurement device to execute the measurement of radio wave intensity within a predetermined frequency range at a predetermined spot, and stores the measurement result in association with position information, and determines whether or not the measured radio wave intensity is within a predetermined allowable range set in advance, and stores the determination result in association with the position information, and statistically processes the measurement result of the radio wave measurement device to generate a threshold for determining the allowable range of a level of a received radio wave, and stores the threshold in association with the position information.SELECTED DRAWING: Figure 4 【課題】路線沿線における電波障害を高い位置精度で検出するとともに、電波障害の発生原因を出力することができる電波障害検出システムを実現する。【解決手段】無線信号を送信する無線基地局が配設されている路線を走行する車両に搭載され、路線沿線の電波障害を検出する車上装置(20)において、車上装置は、周辺電波の強度を測定する電波測定装置と、車両の位置を把握するための測位装置と、記憶装置と制御装置を備え、制御装置は、予め定められた地点にて電波測定装置により所定周波数範囲の電波強度の測定を実行させ、測定結果を位置情報と関連させて記憶するとともに、測定された電波強度が予め設定された所定の許容範囲に入っているか否かを判定し、判定結果を位置情報と関連させて記憶し、電波測定装置の測定結果を統計処理して受信電波のレベルの許容範囲を決定するしきい値を生成して位置情報と関連させて記憶するようにした。【選択図】図4