Displacement sensing device and application thereof

Abstract

The invention belongs to the technical field of measuring equipment, and particularly relates to a displacement sensing device and application thereof. An intelligent inhaul cable with a built-in optical fiber sensor is adopted in existing inhaul cable detection and monitoring, the state of the optical fiber sensor is uncertain, and data reliability is insufficient in the application process. According to the intelligent inhaul cable with the built-in magnetic flux inner sensor, due to the fact that the sensor derives inhaul cable force through inhaul cable section area changes, the state of the inhaul cable cannot be effectively analyzed when the inhaul cable is rusted or part of the section of the inhaul cable quits work due to other reasons. The invention provides a displacement sensingdevice which comprises a displacement sensing assembly and a power supply collection assembly which are connected with each other, the displacement sensing assembly comprises a displacement sensor, asensing steel wire and a measuring steel wire, the displacement sensor is connected with one end of the sensing steel wire, and the other end of the sensing steel wire is connected with one end of the measuring steel wire. And a convenient replacement condition is provided, so that the production, transportation, installation, use and subsequent maintenance of the intelligent inhaul cable are more convenient.

Description

technical field [0001] The application belongs to the technical field of measuring equipment, and in particular relates to a displacement sensing device and its application. Background technique [0002] Stay cables are also commonly referred to as cables, stay cables, stay cables, slings, suspenders, tie rods, external cables and steel beams, and are used in large civil engineering infrastructure such as cable-stayed bridges, suspension bridges, cable-stayed arch bridges and For buildings that use cables to bear the load, the cables help the structure to achieve large-span spans or provide high-strength prestress, and are a key structural member that transmits tensile loads. Effective cable detection and automatic monitoring methods can avoid unnecessary maintenance and replacement, greatly increase the service life of the cable, and can accurately evaluate its safety status to avoid catastrophic accidents such as failure. [0003] The construction and maintenance of infra...

AI Technical Summary

Problems solved by technology

Among the existing cable detection methods, the manual detection method mainly observes the structural surface with the naked eye or a magnifying glass, and is powerless to detect internal defects; the detection method of ultrasonic or shock wave instruments passes through the generation of fluctuation signals, and analyzes the obtained fluctuation signals to detect The size and location of the damage of the cable, but when the surface of the cable wire is uneven, the cable is restrained or the signal interference caused by other structural reasons cannot be effectively analyzed and screened; the ray detection can only detect a section, and cannot detect the anchorage area , the detection cost is relatively high, the instrument is expensive, and it has certain radiation; although the magnetic flux leakage detection method can clearly determine the position and quantity of broken wires, the equipment is complicated, and the detection accuracy is not good for pulling slings with outer protective layers. High, the spatial resolution of the same defect is not high, and the detection effect is even worse for the damage of the sling buried in the beam

In the automatic monitoring of cables, there are intelligent cables with built-in optical fiber sensors. Due to the great difference in the materials of optical fibers and cables, the state of the optical fiber sensor itself is uncertain, and the data feasibility in the application process is insufficient; intelligent cables with built-in magnetic flux sensors , since the sensor deduces the force of the cable through the change of the cross-sectional area of ​​the cable, the state of the cable cannot be effectively analyzed when the cable is corroded or part of the section is out of work for other reasons

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