PROBLEM TO BE SOLVED: To provide a track circuit transmitter of high soundness.SOLUTION: A track circuit transmitter 1 comprises: an ATC signal output controller 3; an ATC signal wave generator 4; a selector 5 for selecting an ATC signal or non-output; a power amplifier 6 of an output of the selector; ATC signal band filters 12 and 14 for removing noise of transformer output voltage and output current; an ATC signal voltage detector 13 and an ATC signal current detector 15; a TD signal voltage detector 17 for detecting voltage of a TD signal via TD signal band filters 16 and 18, and a TD signal current detector 19; addition circuits 20 and 21; a level monitoring unit 22 for level monitoring by using an addition result; and a changeover switch 9 for controlling output to a track circuit 26 of a signal of the power amplifier 6 by using a control command of the level monitoring unit 22. When a level is determined to be abnormal in the level monitoring of the ATC signal band or the TD signal band, the track circuit transmitter 1 stops signal transmission to the track circuit 26.
【課題】健全性の高い軌道回路用送信器を提供する。【解決手段】軌道回路用送信器1は、ATC信号出力制御部3、ATC信号波生成器4、ATC信号か未出力かを選択する選択器5と、選択器出力の電力増幅器6と、トランス出力電圧及び出力電流のノイズを除去するATC信号用帯域フィルタ12,14と、ATC信号用電圧検知部13及びATC信号用電流検知部15と、TD信号用帯域フィルタ16,18を介しTD信号の電圧を検知するTD信号用電圧検知部17及びTD信号用電流検知部19と、加算回路20,21と、加算結果でレベル監視を行うレベル監視部22と、レベル監視部22の制御指示で電力増幅器6の信号の軌道回路26への出力を制御する切換スイッチ9とを備え、ATC信号帯域ないしTD信号帯域のレベル監視で、異常レベルと判断された場合、軌道回路26への信号送信を停止する。【選択図】図1
TRACK CIRCUIT TRANSMITTER AND FAILURE DETECTING METHOD FOR THE SAME
軌道回路用送信器及びその故障検知方法
2016-01-12
Patent
Electronic Resource
Japanese
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