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Magnet displacement sensor

A displacement sensor and magnet technology, applied in the field of sensors, can solve the problems of high cost, difficult to obtain change data, unable to realize automatic measurement, etc., and achieve the effects of long service life, high measurement resolution and simple structure

Inactive Publication Date: 2012-06-27
CHINA GEOKON INSTR
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  • Abstract
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Problems solved by technology

[0005] The present invention aims at engineering technical problems such as the inability to realize automatic measurement, the difficulty in obtaining continuous change data, the measurement of vertical displacement, and the high cost of the existing sensor device, and provides a method for measuring the displacement of a non-contact magnet. A magnet displacement sensor, which can realize automatic intelligent measurement, and has the advantages of simple structure and low cost

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Embodiment Construction

[0024] The present invention will be described below in conjunction with the accompanying drawings.

[0025] The invention discloses a magnet displacement sensor, its structural schematic diagram is as follows figure 1 As shown, it includes several magnetic sensitive elements 1, strip supports 2 and detection circuits. Each magnetic sensitive element 1 is fixedly arranged on the strip supports 2 and arranged at a certain interval along the strip direction to form a uniformly distributed linear array. , in order to improve the resolution of the magnet displacement sensor, the spacing is usually set between 1-20 millimeters, preferably 1-10 millimeters or 2-5 millimeters, the input end of the detection circuit is connected with each magnetic sensitive element 1, and the detection circuit The output terminal is provided with a communication interface. In view of the two-state characteristic of the inherent switch of the magnetic sensitive element, the magnetic sensitive element ...

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Abstract

The invention relates to a magnet displacement sensor, which is used for measuring displacement of a magnet without contacting with the sensor and comprises a plurality of magnetic sensitive elements, a strip-shaped supporting part and a detecting circuit. The magnetic sensitive elements are fixedly arranged on the strip-shaped supporting part and are arranged at certain intervals along a length direction to form a uniformly distributed linear array, each interval ranges from 1 millimeter to 20 millimeters, an input end of the detecting circuit is connected with the magnetic sensitive elements so as to detect output statuses of the magnetic sensitive elements within a range of a magnetic field effect when the magnet moves along the length direction parallel to the strip-shaped supporting part, and an output end of the detecting circuit is provided with a communication interface. The magnet displacement sensor can realize automatic intelligent measurement, and has the advantages of simplicity in structure and low cost.

Description

technical field [0001] The invention relates to the field of sensor technology, in particular to a linear array magnet displacement sensor, which is suitable for soil displacement monitoring in geotechnical engineering, such as soil settlement or horizontal displacement measurement, and can also be used for liquid level monitoring. Background technique [0002] The magnetic displacement meter has the characteristics that the measured point is completely non-contact with the sensor device, such as the electromagnetic settlement meter in the geotechnical monitoring industry, the magnetostrictive displacement meter for liquid level measurement, etc. [0003] The electromagnetic sedimentation instrument is to put one or several magnetic rings at a certain distance on the outside of the sedimentation tube made of special plastic material or non-magnetic material, and place a sensor device in the sedimentation tube. The sensor device is a magnetic induction probe connected with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
Inventor 谭斌沈省三
Owner CHINA GEOKON INSTR
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