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Non-contact position detection method

A detection method and non-contact technology, applied in the direction of electric/magnetic position measurement, measuring device, using electric device, etc., can solve the problems of poor electrical contact, wrong position signal, etc., to improve the service life, avoid friction damage, improve The effect of long-term precision

Pending Publication Date: 2021-09-21
重庆编福科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing linear motion position detection method generally uses a sliding resistor. By applying a DC voltage to both ends of the resistor, different voltages can be obtained when the sliding end is at different positions on the resistor, and then the device's Position, during the long-term operation of the equipment, due to the long-term movement of the sliding end of the sliding resistor, it will cause friction between the contact at the sliding end and the resistor itself, and the wear caused by friction will cause poor contact with the electric shock and cause errors in the detected position signal

Method used

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Effect test

Embodiment 1

[0038] When the moving device is at position 1, the magnet is closest to the linear Hall sensor 1, the voltage signal output by the linear Hall sensor 1 is greater than the output voltage signals of the linear Hall sensor and the linear Hall sensor 3, and the linear Hall sensor 2 and The linear Hall sensor 3 cannot sense the magnet because it is too far away from the magnet, and the output voltage signal is the same. When the moving device gradually moves to the right to position 2 or position 3, the distance between the linear Hall sensor 1 and the magnet increases. Large, the output voltage signal of the linear Hall sensor 1 gradually decreases; the distance between the linear Hall sensor 2 and the magnet decreases, and the output voltage signal of the linear Hall sensor 2 gradually increases; the linear Hall sensor 3 still cannot sense To the magnet, the output voltage signal of the linear Hall sensor 3 remains unchanged.

Embodiment 2

[0040] When the moving device moves to position 4, the linear Hall sensor 2 is closest to the magnet, and the output voltage signal of the linear Hall sensor 2 is the largest. Since the linear Hall sensor 1 and the linear Hall sensor 3 are far away from the magnet, they cannot sense the magnet. , so the output voltage is the same, when the moving device gradually moves to the right to position 5 or position 6, the distance between the linear Hall sensor 2 and the magnet increases, and the voltage signal output by the linear Hall sensor 2 gradually decreases; linear The distance between the Hall sensor 3 and the magnet decreases, and the voltage signal output by the linear Hall sensor 3 gradually increases; the distance between the linear Hall sensor 1 and the magnet increases further, and the magnet is still not sensed, the linear Hall sensor The output voltage of 1 remains constant.

Embodiment 3

[0042] When the moving device moves to position 7, the linear Hall sensor 3 is closest to the magnet, and the output voltage signal of the linear Hall sensor 3 is the largest. Since the linear Hall sensor 1 and the linear Hall sensor 2 are far away from the magnet, they cannot sense the magnet. , so the output voltage is the same, when the moving device gradually moves to the right to position 8 or position 9, the distance between the linear Hall sensor 3 and the magnet increases, and the voltage signal output by the linear Hall sensor 3 gradually decreases; linear The distance between the Hall sensor 1 and the linear Hall sensor 2 and the magnet further increases, and the voltage signals output by the linear Hall sensor 1 and the linear Hall sensor 2 remain unchanged.

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Abstract

The invention relates to a non-contact position detection method, which is used for measuring the real-time position of linear motion equipment, and by adopting the detection method provided by the invention, a sensor does not need to be in physical contact with a moving object, so that friction damage caused by physical contact is avoided, and the long-acting accuracy of the detection equipment is improved. And meanwhile, the service life of the receptor is prolonged.

Description

technical field [0001] The invention relates to a position detection method of a sports device, in particular to a non-contact position detection method. Background technique [0002] The existing linear motion position detection method generally uses a sliding resistor. By applying a DC voltage to both ends of the resistor, different voltages can be obtained when the sliding end is at different positions on the resistor, and then the device's Position, during the long-term operation of the equipment, due to the long-term movement of the sliding end of the sliding resistor, it will cause friction between the contact of the sliding end and the resistor itself, and the wear caused by friction will cause poor contact with the electric shock and cause an error in the detected position signal. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a non-contact position detection method. [0004] A n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/00
CPCG01B7/003
Inventor 罗人轩游云刘祖泽
Owner 重庆编福科技有限公司
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