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WIT Transactions on the Built Environment
An automatic train protection system ATS and a track circuit is a fundamental and essential element of a railway signaling system. At first, we mention maintenance technology of ATSS. For the stable operation of AN ATS, the management of the quality factor (Q) of the ground beacon is essential and the Q must be kept its value within A specified level through maintenance. Our developed new measurement method is based on the current ratio between two different frequency levels of a pick-up coildoi:10.2495/cr060921 fatcat:stsm74okhvbg7kt4y3ovd3bipe