Contact type micro-displacement detection device

Abstract

The invention provides a contact type micro-displacement detection device which comprises a hollow shell. A measuring rod is transversely arranged in the shell, the left end of the measuring rod penetrates out of the shell, the upper side and the lower side of the measuring rod are sequentially provided with magnetic control elastomers, piezoelectric patches and U-shaped mounting grooves from inside to outside, and the two U-shaped mounting grooves are arranged back to back, and cavities used for containing the first permanent magnet and the second permanent magnet are formed respectively with the upper inner side wall and the lower inner side wall of the shell, the two piezoelectric patches are connected with leads, a directional plate is fixedly arranged on the right side in the shell, the right end of the measuring rod penetrates through the directional plate and is freely suspended, and a cushion block is arranged on the right inner side wall of the shell. Guide rings are arranged on the left side wall of the shell and the directional plate, a left push plate is fixedly connected to the left side of the measuring rod, a right push plate is fixedly connected to the right side of the measuring rod, a left elastic reset mechanism is connected between the left push plate and the left side wall, and a right elastic reset mechanism is connected between the right push plate and the directional plate. Tiny displacement generated by an object can be accurately detected.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a contact type micro-displacement detection device. Background technique [0002] Micro-displacement detection technology is one of the key technologies in precision positioning, precision instrument manufacturing, precision measurement and other application fields, and occupies an extremely important position in cutting-edge industrial production fields and scientific research. With the continuous advancement of science and technology, the rapid rise of micro-nano technology has made the requirements for micro-displacement detection technology continue to increase. [0003] The patent document whose publication number is CN208902127U discloses a kind of optical fiber micro-displacement sensor, which includes a transmission rod, two serrated reflectors arranged oppositely, and two collimating lenses respectively injected and emitted; the transmission rod pushes one of the se...

AI Technical Summary

Problems solved by technology

[0004] However, the above technical solution has the following technical problems: it is impossible to avoid various uncertain factors such as light source error, geometric installation error and error caused by environmental factors.

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