To provide a track circuit device capable of generating a train detection signal by frequency-dividing an AC signal and executing the PSK modulation without using a conventional frequency divider.SOLUTION: A frequency division modulator 20 of the track circuit device includes a transformer 21 including a primary winding 211 with a center tap 213 and a secondary winding 212. One end part 211a and the other end part 211b of the primary winding 211 are respectively connected to one output end 10a of an AC power supply 10 through a first switching element SW1 or a second switching element SW2. The center tap 213 is connected to the other output end 10b of the AC power supply 10. The frequency division modulator 20 further includes a control part 25 for controlling any one of the first and second switching elements SW1, SW2 to turn ON based on a zero-cross point of an AC signal supplied from the AC power supply 10, a preset frequency division ratio, and a preset bit pattern.SELECTED DRAWING: Figure 2

    【課題】従来の分周器を用いることなく交流信号を分周し且つPSK変調して列車検知信号を生成することのできる軌道回路装置を提供する。【解決手段】軌道回路装置の分周変調器20は、センタータップ213を有する一次巻線211と二次巻線212とを有するトランス21を含む。一次巻線211の一方の端部211a及び他方の端部211bは、それぞれ第1スイッチング素子SW1又は第2スイッチング素子SW2を介して交流電源10の一方の出力端10aに接続され、センタータップ213は、交流電源10の他方の出力端10bに接続されている。また、分周変調器20は、交流電源10から供給される交流信号のゼロクロス点、予め設定された分周比及予め設定されたビットパターンに基づいて第1及び第2スイッチング素子SW1、SW2のいずれか一方をON制御する制御部25をさらに含む。【選択図】図2


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    Title :

    TRACK CIRCUIT DEVICE


    Additional title:

    軌道回路装置


    Contributors:

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr



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