Detector
A technology of detection device and detection part, which is applied in the directions of geophysical measurement, instrument, contact operating mechanism, etc., and can solve the problems of no cognition and no record of the clamping detection sensor
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no. 1 approach
[0049] Figure 10 It is a schematic diagram showing the structure of a railway vehicle provided with the detection device according to the first embodiment. Figure 10 (A) shows the side view which looked at the railway vehicle 100 from the outer side of a vehicle. exist Figure 10 In (A), reference numeral 101 denotes an entrance and exit of a vehicle. There are many entrances and exits in the vehicle, but two entrances and exits are drawn in this figure. Movable doors 101-A and 101-B are provided at the respective entrances and exits 101 of the vehicle.
[0050] In the drawing, reference numeral 103 denotes a entrapment detection sensor installed on the side of the door 101-B, and reference numeral 104 denotes a entrapment detection sensor installed on the side of the door 101-A. Doors 101-A and 101-B pass along the Figure 10 Opening and closing are performed by moving in the direction indicated by arrow 101D in (A). When the doors 101-A and 101-B are closed, the entr...
no. 2 approach
[0127] Figure 9 It is a block diagram showing the configuration of the detection unit according to the second embodiment. In the second embodiment, when the diagnosis mode is designated, the voltage supplied to the electrode lines SNL1 and SNL2 changes with time. As a result, unless a disconnection occurs, the output voltages that change with time are supplied from the sensors SN1 to SN3 to the voltage detection circuit 2 . On the other hand, when a disconnection occurs, the output voltage supplied to the voltage detection circuit 2 becomes the second voltage V2 ( L2 ) which does not vary with time. Therefore, the voltage detection circuit 2 can determine whether or not a disconnection failure has occurred by determining whether or not the output voltages of the sensors SN1 to SN3 have changed over time.
[0128] Next, a more specific description will be given. To the voltage detection circuit 2 according to the second embodiment, a comparator circuit CMP and a voltage var...
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