Monitoring system for cable force of magnetic flux sensors and preparation method of monitoring system

Abstract

The invention discloses a monitoring system for a cable force of magnetic flux sensors and a preparation method of the monitoring system. The monitoring system comprises a cable body, the magnetic flux sensors, a magnetoelastic instrument, a switch line concentrating box and a collecting system, wherein the cable body is formed by twisting a plurality of steel wires, and an epoxy coating layer, ahigh-strength polyester belt, inner-layer HDPE (High-Density Polyethylene), an isolating layer and outer side HDPE are sequentially arranged at the outer side of the steel wires from inside to outside; the magnetic flux sensors are distributed on the steel wires arranged on two ends of the cable body; the magnetic flux sensors are fixedly arranged in the steel wires; anchorage devices are arrangedon the two ends of the cable body; transmission signal lines of the magnetic flux sensors are lead out of the cable body; the magnetoelastic instrument is connected with the transmission signal linesof the magnetic flux sensors; the collecting system is connected with the magnetoelastic instrument. The cable force is detected by improving the parallel steel wire cable body and adopting small-bore electromagnetic sensors.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a magnetic flux sensor cable force monitoring system and a manufacturing method thereof. Background technique [0002] Parallel wire cables are widely used in bridge engineering, including cables of cable-stayed bridges, suspension cables of arch bridges and suspension bridges, tie rods of arch bridges, etc. The static cable force of cables is an important parameter for cable construction and operation testing. The static stress of the cable is an important index to detect the working state of the cable, and the measurement of these parameters of the cable is more important. [0003] The cable force of the magnetic flux sensor has the advantages of high detection accuracy, good long-term stability, durability, long service life, replaceable, etc., and can automatically compensate for temperature; when used with the matching magnetoelastic instrument, it can perform mul...

AI Technical Summary

Problems solved by technology

For example, Patent No. 201220140323.7 discloses a magnetic flux cable force detection device. The magnetic flux sensor is a sensor with excellent performance, which can realize absolute and dynamic strain and temperature measurement, but it is still not enough for the measurement range of the cable, and the adhesive installation The fixing method of the magnetic flux sensor does not form a reliable protection, therefore, it is particularly important to solve this kind of problem

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