| 摘要 |
PROBLEM TO BE SOLVED: To provide a multistation remote ground system and a monitoring device for the ground system used for monitoring the state. SOLUTION: In the ground system monitor for detecting and monitoring the ground state of bus on the ground and a ground pile underground or a ground net contains a few number of ground monitor units 100 and a main control computer 200 and has functions of monitoring, alarming, recording and communicating, in which the ground monitor units 100 detect the ground data, drive a driver 70, activate an alarm circuit 80 to generate a ground abnormality alarm and concentrate the ground data and the abnormal state in the unit 100 in the main control computer 200, passing through a communication circuit.
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