| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rail breakage inspection method without using a track circuit. Ž<P>SOLUTION: A partial section of a rail R is set as an inspection object section of a rail breakage inspection device 1, and load impedance Z<SB>L</SB>equal to characteristic impedance Z0 of the rails R is connected between the rails R to terminate the other end side of the set inspection object section. The rail breakage inspection device 1 carries out incidence (transmission) of pulse signals from one end side of the inspection object section toward the other end side, and determines the presence of rail breakage/short circuit in the inspection object section based on the waveform of reflected wave received (observed) in an incidence position. Further, when determining the presence of rail breakage/short circuit, a distance L from the incidence position to an occurrence position is computed from the time ΔT required until receiving the reflected wave from the incidence of the pulse signal to the rails R. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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