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A self-diagnosing high-speed maglev train gap sensor and self-diagnosing method

A technology for maglev trains and gap sensors, applied to instruments, using electromagnetic means, and measuring devices, can solve the problems of poor online diagnosis efficiency and accuracy of gap sensors, improve online diagnosis efficiency and accuracy, reduce maintenance frequency, reduce The effect of maintenance costs

Active Publication Date: 2021-09-28
NINGBO CRRC TIMES TRANSDUCER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a self-diagnosing high-speed maglev train gap sensor and a self-diagnosing method to solve the problem of poor online diagnosis efficiency and accuracy of the gap sensor;

Method used

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  • A self-diagnosing high-speed maglev train gap sensor and self-diagnosing method
  • A self-diagnosing high-speed maglev train gap sensor and self-diagnosing method
  • A self-diagnosing high-speed maglev train gap sensor and self-diagnosing method

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Experimental program
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Effect test

Embodiment 1

[0062] like figure 1 As shown, a self-diagnosing high-speed maglev train gap sensor includes a high-frequency signal source, a probe coil module, a signal processing module, an accelerometer, a self-diagnosing module and a diagnostic output module;

[0063] Wherein, the probe coil module is connected with the high-frequency signal source, the signal processing module is connected with the probe coil module, the self-diagnosis module is connected with the signal processing module, the diagnostic output module is connected with the self-diagnosis module, and the accelerometer is connected with the self-diagnosis module .

[0064] The signal processing module is used to process the AC signal collected by the probe coil module to obtain the gap signal and the cogging signal. The accelerometer is used to measure the acceleration in the vertical direction of the train and send the measured acceleration value to the self-diagnosis module , the self-diagnosis module is used to perfor...

Embodiment 2

[0093] like Figure 9 Shown, the self-diagnosis method of the high-speed maglev train gap sensor of a kind of self-diagnosis of the present invention, comprises steps:

[0094] S1. Calculate the signal period of the cogging signal according to the cogging signal;

[0095] S2. Calculate the real-time gap value according to the gap signal;

[0096] S3, judge whether the acceleration in the vertical direction of the train changes according to the acceleration value measured by the accelerometer; if so, then return to step S1;

[0097] S4. If the acceleration does not change, calculate the average value of the gap value according to the real-time gap value;

[0098] S5. Determine whether the average value of the gap value changes, and if it changes, set the corresponding signal flag bit value to the first preset value, and return to step S1;

[0099] S6. If the average value of the gap value does not change, calculate the difference between the average value of the gap value an...

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Abstract

The invention belongs to the technical field of gap sensors, and provides a self-diagnosing high-speed maglev train gap sensor, including a probe coil module, a signal processing module, an accelerometer, a self-diagnosis module and a diagnostic output module; wherein, the probe coil module is connected to the car body The high-frequency signal source is connected, the signal processing module is connected with the probe coil module, the self-diagnosis module is connected with the signal processing module, the diagnosis output module is connected with the self-diagnosis module, and the accelerometer is connected with the self-diagnosis module. The present invention also provides a self-diagnosing method for the gap sensor of a high-speed maglev train. The advantage of the present invention is that it combines the multi-dimensional signal fault judgment of the speed coil cogging signal and the accelerometer to effectively improve the online diagnosis efficiency and accuracy of the sensor. It is easy to detect faults and replace them in time, improve the operation safety of maglev trains, reduce the frequency of off-line maintenance of sensors, and reduce maintenance costs.

Description

technical field [0001] The invention relates to the technical field of gap sensors, in particular to a self-diagnosing gap sensor for high-speed maglev trains and a self-diagnosing method. Background technique [0002] Relying on its advantages of no wear, high speed and low noise, maglev train has developed into a major direction of rail transit technology in the future. A direct current is passed into the suspension electromagnet, and an electromagnetic attraction force is generated between the suspension electromagnet and the iron core in the track to float the car body. If it is not controlled, the suspension electromagnet will be firmly adsorbed on the iron core of the track, and the train will not be able to walk. For this reason, a gap sensor is installed near the suspension electromagnet to measure the distance between the suspension electromagnet and the track iron core (that is, the suspension gap). [0003] The suspension gap sensor is a key component of the ent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/14G01D21/02
CPCG01B7/14G01D21/02
Inventor 胡忠忠郑良广罗茹丹吕阳刘瑛
Owner NINGBO CRRC TIMES TRANSDUCER TECH CO LTD