A high-precision displacement sensor for gap monitoring

Abstract

The invention provides a high-precision displacement sensor for monitoring the gap. The housing and the limit block are respectively fixed on the parts on both sides of the gap. The housing is equipped with a PCB assembly, a guide rod, a sliding base and a high-precision magnet. The rod and PCB assembly are fixed in the housing, the inner end of the sliding base is sleeved on the guide rod and can slide along the guide rod, the outer end of the sliding base protrudes from the housing, and the outer end of the sliding base is provided with a magnet and fixed by magnetic adsorption On the limit block, the high-precision magnet is fixed on the sliding base and moves synchronously with the sliding base; the PCB assembly includes a high-precision electromagnetic induction chip for capturing the magnetic field change signal caused by the movement of the high-precision magnet, and the The captured magnetic field change signal is processed into a single-chip microcomputer for displacement signals. The high-precision displacement sensor for gap monitoring has the advantages of high measurement accuracy and small measurement stability error, and is also applicable to uneven installation surfaces.

Description

technical field [0001] The invention relates to a displacement sensor for gap monitoring, in particular to a high-precision sensor for monitoring mechanical gaps. Background technique [0002] The function of the sensor is to convert various measured physical quantities into numbers, among which the displacement sensor is an important class member. An important advantage of digital displacement sensors is the convenience of sending signals directly into computer systems. This kind of sensor develops rapidly and is widely used. Because of the advantages of easy digitalization, high precision, strong anti-interference ability, no artificial reading error, convenient installation, and reliable use, it has been increasingly widely used in machine tool processing, testing instruments, aviation and other industries. The mechanical gap sensor is a sensor for continuous monitoring of high-precision relative displacement. It is a linear device for metal induction and also belongs t...

AI Technical Summary

Problems solved by technology

[0003] Existing displacement sensors used to monitor mechanical gaps generally have the following defects: 1. The accuracy of technical products is generally low, and it is impossible to meet the high-precision relative displacement monitoring requirements of continuous monitoring products at micron-level precision; 2. The measured surface of the product is not It is flat and has a relative gap and is limited by installation, so it is impossible to accurately monitor the relative displacement of the upper and lower sides of the gap; 3. The environmental adaptability of the prior art products is poor, and the error is greatly affected by the environment (temperature, vibration) during continuous monitoring

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