Eddy current displacement sensor

A displacement sensor and sensor technology, applied in the field of sensors, can solve the problems of inability to apply high temperature and temperature changes, poor temperature adaptability, exacerbated temperature drift effect, etc., to achieve the effect of reducing test difficulty, good temperature adaptability, and multiple functions

Inactive Publication Date: 2016-05-04
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Abstract
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  • Claims
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Problems solved by technology

Its probe assembly has only one induction coil without corresponding temperature compensation design, so it cannot be used in places with high temperature and temperature changes, and its printed board assembly is built into the probe, resulting in a large probe volume,...

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Embodiment Construction

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] According to an embodiment of the present invention, an eddy current displacement sensor is provided. The eddy current displacement sensor includes: a probe, a front end, and a signal cable 105 respectively connected to the probe and the front end; wherein, the probe includes: a sensor housing 101, and a differential structure built into the sensor housing ...

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Abstract

The present invention discloses an eddy current displacement sensor. The eddy current displacement sensor comprises a probe, a proximitor and a signal cable (105) connected with the probe and the proximitor. The probe includes a sensor housing (101) and a testing coil (100) and a compensation coil (103) which are internally arranged in the sensor housing (101) in a difference structure; the probe is configured to differentially output difference signals of the testing coil (100) and the compensation coil (103) when a metal detection surface to be detected (300) changes the displacement; and the proximitor is configured to perform signal processing of the difference signals and output the detection result of the displacement changing of the metal detection surface to be detected (300). According to the scheme of the invention, the defects may be overcome that few functions, large size, poor temperature adaption capability and the like in the prior art, and the beneficial effects may be realized that a lot of functions, small size and good temperature adaption capability.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an eddy current displacement sensor, in particular to a high temperature and high pressure resistant eddy current displacement sensor. Background technique [0002] A sensor is a detection device that can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules. The eddy current displacement sensor is a non-contact sensor, which has the characteristics of fast response speed, high resolution, oil pollution resistance, etc. It is widely used in displacement measurement, non-destructive flaw detection, thickness measurement, etc. Due to the influence of pressure, in different temperature and pressure environments, the test results will drift, resulting in inaccurate testing, which limits the application of eddy current sensors in temperature and pressure environments. [0003]...

Claims

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Application Information

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IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 叶俊奇耿继青黄伟才欧锦华刘志昌
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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