| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sensor state monitoring system for accurately determining whether or not a sensor for detection used for a railway vehicle is put in an abnormal state. <P>SOLUTION: A sensor state determination system 50 is provided with: a sensor 51 for detection capable of detecting a physical value acting on a railway vehicle 1; and an electronic control device 60. A sensor 52 for monitoring which is equivalent to the sensor 51 for detection is mounted on a site which is equivalent to the site on which the sensor 51 for detection is mounted. The electronic control device 60 is provided with determination means (coherence arithmetic part 62, state determination part 63) for, on the basis of a first signal X detected by the sensor 51 for detection and a second signal Y detected by the sensor 52 for monitoring, calculating a coherence value C<SB POS="POST">XY</SB>showing the correlation relationship of the both signals, and for, when the coherence value C<SB POS="POST">XY</SB>is smaller than a preliminarily set abnormality determination value Ca, determining that the sensor 51 for detection is put in an abnormal state. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
