Side slope anchor rod monitoring and early warning system based on LabVIEW and FBG strain sensors

Abstract

The invention discloses a side slope anchor rod monitoring and early warning system based on LabVIEW and FBG strain sensors, and belongs to the field of side slope support monitoring. The system comprises an acquisition module, a conversion analysis module and an upper computer, wherein the acquisition module acquires a drift amount change signal of a wavelength generated by a dependent variable signal of anchor rod stretching, and transmits the drift amount change signal to the conversion analysis module, the conversion analysis module converts the received drift amount change signal transmitted by the acquisition module into an electric signal and transmits the electric signal to the upper computer, and the upper computer receives the electric signal transmitted by the conversion analysis module, converts the electric signal into an dependent variable, compares the converted dependent variable with an early warning threshold value for judgment, and performs early warning display. According to the invention, the system can display a monitoring time history curve in real time, data storage and graphic display can be realized, an early warning threshold can be modified, high matching degree and high applicability are realized, and alarm of different degrees can be carried out on a monitored object exceeding an alarm threshold value in real time.

Description

technical field [0001] The invention belongs to the field of slope support monitoring, in particular to a slope bolt monitoring and early warning system based on LabVIEW and FBG strain sensors. Background technique [0002] After the equipment iFBG&eDAQ-S15 synchronous demodulator performs special processing, it collects the FBG strain sensor data at each preset position in real time and displays them on the human-computer interaction interface, which has the functions of real-time display, real-time early warning and storage; at the same time, in order to ensure For effective early warning and data signal acquisition of slope bolt support structures, it is necessary to adjust the fixing method of the strain sensor. At present, the FBG strain sensor is mainly fixed by welding the clamping device on the anchor rod. [0003] Determine the slope sliding mode, direction and speed of the slope, grasp the law of slope development and change, effectively predict the state of the s...

AI Technical Summary

Problems solved by technology

[0003] Determine the slope sliding mode, direction and speed of the slope, grasp the law of slope development and change, effectively predict the state of the slope, and provide an important basis for taking necessary protective and remedial measures; the current monitoring and early warning system for slope bolts is too complicated, It is difficult to popularize effectively, and there is a gap in the existing slope monitoring and early warning system for the monitoring and early warning of anchor bolts. Few people try to make achievements here, but at the same time, slope anchor bolts are becoming more and more popular, and there is a lack of subsequent use of them is a big waste of resources

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