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Method for monitoring remote distance sensor state online

A sensor and long-distance technology, applied in the field of sensor status monitoring, can solve problems such as prolonging system maintenance time, reducing system availability, and failing to judge the cause of failure in time, achieving high real-time performance and convenient construction

Inactive Publication Date: 2017-02-15
HENAN SPLENDOR SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the actual installation location of the base station to the sensor will be far away, the disaster prevention system cannot judge the cause of the failure in time when the sensor data cannot be received, prolonging the time for system maintenance and reducing the availability of the system

Method used

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  • Method for monitoring remote distance sensor state online
  • Method for monitoring remote distance sensor state online
  • Method for monitoring remote distance sensor state online

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Experimental program
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Embodiment Construction

[0014] The technical solutions of the present invention will be described in further detail below through specific implementation methods.

[0015] A method for online monitoring of the status of remote sensors. On the system side, the RS485 signal output by the sensor communicating with the system is collected, the waveform signal of the collected RS485 signal is sampled and analyzed, and the sensor or transmission cable is judged according to the sampled signal waveform. Fault.

[0016] Specifically, sampling and analyzing the waveform signal of the collected RS485 signal includes:

[0017] Analyze whether the waveform has positive and negative signals at the same time. When the positive and negative waveforms of the signal are good, and the rising and falling time of the waveform is relatively short, the sensor judges it as normal, such as figure 1 shown.

[0018] When the signal lacks positive or negative waves, it is judged as a sensor communication failure, such as f...

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Abstract

The invention provides a method for monitoring a remote distance sensor state online. According to the method, at a system side, RS485 signals outputted by a sensor communicating with a system are acquired, waveform signals of the acquired RS485 signals are sampled and analyzed, a fault of the sensor or a transmission cable is determined according to sampled signal waveform, and sampling and analysis of the waveform signals of the acquired RS485 signals comprises analyzing whether waveform further has both positive and negative wave signals, acquiring positive and negative amplitudes of the waveform signals, calculating the rising edge time and the falling edge time, and determining whether peaks occur at rising edges and falling edges of the signals. The method is advantaged in that high timeliness is realized, influence on an existing system can be avoided, indoor equipment mounting is only required, adding equipment to the sensor is not required, construction is convenient, and the method is convenient to determine an equipment state of sensor-like equipment.

Description

technical field [0001] The invention relates to a method for monitoring the state of a sensor, in particular to a method for on-line monitoring the state of a remote sensor. Background technique [0002] The railway disaster prevention and safety monitoring system is one of the important infrastructures to ensure the safe operation of railway traffic. It is mainly to monitor sudden hazards such as natural disasters and foreign object invasion that endanger the safety of railway transportation, and provide processed disaster warning information, speed limit information or outage information, etc., to adjust the operation plan and issue traffic for the operation dispatching center Control, emergency rescue, and maintenance provide emergency response plans and basis to further improve railway traffic safety and operational efficiency. Therefore, the accurate and monitorable disaster information is the foundation of the disaster prevention system. In the disaster prevention sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D18/00
CPCG01D18/00
Inventor 王辉杰王梦洁王颖迪范松森刘俊
Owner HENAN SPLENDOR SCI & TECH
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