| 摘要 |
PROBLEM TO BE SOLVED: To automatically block a blocking interval using a signal having a lot of present indication numbers without using a special relay or a track pole changing circuit. SOLUTION: A master device 20 is disposed to an A station, and slave devices 30 and 40a through 40c are disposed to an adjacent B station, and blocking intervals between the A and B stations, and these devices are connected together by a transfer circuit 50. The master device 20 collects information required for automatic blocking signal control such as on-line information, track locking information and the like from the respective slave devices and interlocking devices through the transfer circuit 50, so that the content to be indicated by each signal between the stations is determined based on collected information as mentioned above. And the decided contents of information are so sent to the respective slave devices that the indicating condition of each signal connected with the respective slave devices is focused so as to be controlled by the master device.
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