A vibrating wire type miniature strain gauge

Abstract

The invention relates to a vibrating wire type miniature strain gauge comprising a steel wire, a first end block, a second end block, a coil, a first magnet, a second magnet and a protective outer cylinder; the steel wire, the coil, the first magnet and the second magnet are all arranged inside the protective outer cylinder; the first end block and the second end block are respectively arranged inside the two ends of the protective outer cylinder; the first end block is connected with one end of the steel wire; the second end block is connected with the other end of the steel wire; and the coil is arranged on the outer side of the steel wire; the coil, the first magnet and the second magnet provide signal excitations and signal outputs for the strain gage; and the protective outer cylinder, the steel wire, the first end block, the second end block, the coil, the first magnet and the second magnet form an integrated structure. The vibrating wire type miniature strain gauge adopts centralized structure design, is small in size and is particularly suitable for deformation monitoring in space-constrained applications, and has advantages such as high measurement accuracy, a long life cycle, strong environmental adaptability and being suitable for extensive use in engineering.

Description

technical field [0001] The invention relates to the technical field of rock soil and engineering structure safety monitoring, in particular to a vibrating wire type small strain gauge. Background technique [0002] The vibrating wire strain gauge is a strain gauge that uses the vibrating wire principle for measurement. Its biggest advantages are simple structure, reliable operation, and the output signal is a standard frequency signal, which is very convenient for computer processing. The traditional vibrating wire strain gauge structure is to install steel strings in an outer cylinder. Magnets are arranged at both ends of the coil. The disadvantage of the traditional vibrating wire strain gauge is that it is a separate structure and has a relatively large external volume. When measuring, it needs to assemble the various parts first. The process is cumbersome, and it takes up a lot of space. It cannot be used in space-constrained applications. It is not suitable for small ...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems that the traditional vibrating wire strain gauge has a large shape and low measurement accuracy, and provides a small vibrating wire strain gauge, which adopts a centralized structure design, is small in size and is especially suitable for use in space-constrained applications. Deformation monitoring has the advantages of high measurement accuracy, long service life, and strong environmental adaptability, and is suitable for wide application in engineering

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