Bridge online deflection monitoring system and method

A monitoring system and deflection measurement technology, applied in the direction of measuring devices, elastic testing, machine/structural component testing, etc., can solve the problems of inaccurate measurement, poor timeliness of full-scan monitoring, and difficult operation, so as to improve accuracy, Increase the real-time alarm function to solve the effect of difficult operation and low precision

Pending Publication Date: 2020-05-05
卿俐文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the actual operation difficulty of the contact monitoring existing in the measurement of the optical brazing grating sensor of the existing measuring device, the automatic scanning measurement of the total station, and the measurement of the displacement sensor is high, the measurement is inaccurate, and the timeliness of full scanning monitoring is relatively low. bad question

Method used

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  • Bridge online deflection monitoring system and method
  • Bridge online deflection monitoring system and method
  • Bridge online deflection monitoring system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The deflection safety range of a certain bridge is N, and a vehicle of a railway sub-bureau passes the bridge deck. The deflection measurement module 10 monitors that the deflection value of the vehicle is N1 and transmits the deflection data to data analysis processing and threshold discrimination processing. If it is determined that there is N1 >N, the client terminal 13 will display an alarm signal, and the data storage module will store the event at the same time.

[0057] combine figure 1 and figure 2 As shown, the deflection measurement module 10 includes a controller 6, a CCD area array detector 7, a target 9 fixed on the bridge, a semiconductor near-infrared laser light source 5, a laser emitting shaping optics 4 and a laser receiving optics 8, the Controller 6 is connected with laser emission shaping optics 4 and semiconductor near-infrared laser light source 5, and described CCD area array detector 7 is connected with laser receiving optics 9 and controller ...

Embodiment 2

[0067] The deflection safety range of a certain bridge is N, and a railway vehicle passes the bridge deck. The deflection measurement module 10 monitors that the deflection value of the vehicle is N2 and transmits the deflection data to data analysis processing and threshold discrimination processing. If it is determined that N> N2, indicating that the bridge deflection is normal. The analysis and processing results are sent to the client terminal 13 (including the monitoring center of the railway sub-bureau, mobile phone users, computers and printers) for display.

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Abstract

The invention discloses a bridge online deflection monitoring system, which comprises a deflection measurement module for calculating a deflection value; a data analysis processing and threshold discrimination module, used for extracting a deflection value from the bridge natural vibration signal through an algorithm, comparing and discriminating the deflection value with a deflection threshold preset by the comparator, and sending a discrimination result to the client; and a data transmission module, transmitting deflection value data of the deflection measurement module to the data analysisprocessing and threshold discrimination module. The invention further discloses a monitoring method for the monitoring system. A non-contact monitoring system is used, and a real-time alarm function is added. Therefore, the problems of high operation difficulty and low precision caused by a contact type monitoring method are effectively solved. The deflection of the high-speed rail bridge can be monitored, and the monitoring accuracy is improved. And meanwhile, semiconductor near-infrared laser is used as a transmission medium, the deflection change of the railroad bridge is reflected from a geometric image through the displacement of the target reflection light spots, and the deflection value change of the railroad bridge can be obtained only through simple operation.

Description

technical field [0001] The invention relates to the field of safety evaluation of railway bridges, in particular to an online monitoring system and method for railway bridge deflection based on semiconductor near-infrared laser imaging technology. Background technique [0002] With the rapid economic development, railways play an extremely important role in social life. The railway bridge is an important part of the railway network. It plays an important role in the national economic life. Whether it can operate safely is directly related to the life and property safety of the country and the people. Among them, the deflection is one of the key parameters of the safety assessment of the railway bridge, which has a great influence on the health of the railway bridge. The measurement of the deflection is indispensable in the monitoring of the bridge parameters. The changes of the deflection can be monitored to evaluate the existence of the railway bridge. Security Risk. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00G01B11/16
CPCG01B11/16G01M5/0008
Inventor 卿俐文
Owner 卿俐文
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