| 摘要 |
<p>PURPOSE:To perform economic and efficient train speed control by transmitting a shortcircuiting impedance of a rail circuit and a signal corresponding to a train interval obtained from the adjacent rail circuit signal to the rail circuit. CONSTITUTION:A central transmission type rail transmitter 27 transmits a signal of frequency F2 to rail circuits 1b, 1c. An A/D converter 26 converts the transmission voltage of the transmitter 27, rail approaching direction transmission current and a train retarding direction transmission current into digital values. A calculation controller 29 transmits, when receiving a transmission signal (having a frequency F1) from a central transmission type rail circuit controller 21c, a signal produced by adding train position information of the forward rail circuit contained in the received signal and a distance to the trailing train obtained by the voltage and current, and when not receiving the signal, a signal produced by adding the distance to the preceding train and the distance to the trailing train as a train interval signal from the transmitter 27.</p> |
