Onboard Measurement Method For Signaling
Equipment On Probe Trains
Author(s)
H. Nakamura, S. Takahashi, T.Hiramoto, H. Mochizuki
& T.Mizuma
Abstract
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 coil current when the train passes the beacon. And it can provide the
correct Q data against the distance-fluctuation. Secondly we develop the onboard
method of measuring track circuit. The current of track circuit which is received
through a pair of onboard signal receivers is continuously recorded and analyzed.
From the analyzed data signal engineers judge the necessity of maintenance of
track circuits. These measuring technologies are installed onto the probe train
which is one of revenue-earning train with measurement functions. A conditionbased
monitoring system is realized through the result of statistic processing of
monitored data which is collected from two or more probe trains.
Keywords: signaling system, ATS, track circuit, quality factor, probe train.
1 Introduction
Reduction of maintenance cost is an important task for railroad transportation. The
railroad operators are making efforts to reduce their maintenance costs through
modernizing and laborsaving of maintenance. Since measurement by instruments
installed along the railroad and measurement of track conditions require a lot of
Keywords
signaling system, ATS, track circuit, quality factor, probe train.
Related Book
Other papers in this volume
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