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Long measuring range displacement sensor with waterproof function

A displacement sensor and large-range technology, which is applied in the field of measuring instruments, can solve the problems of sensors not working properly, large sensor measurement results, poor anti-interference ability, etc., and achieve the effects of improved maintainability, light weight, and easy maintenance

Inactive Publication Date: 2004-12-08
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these traditional large-range displacement sensors have an obvious shortcoming and deficiency: when there are various liquids in the use environment, the measurement results of the sensors will have a large deviation, and some sensors may not even work normally at all.
This type of sensor has been widely used in actual production, but the measurement accuracy is low, the anti-interference ability is poor, the volume is large, the maintainability is poor, and it cannot be miniaturized

Method used

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  • Long measuring range displacement sensor with waterproof function
  • Long measuring range displacement sensor with waterproof function
  • Long measuring range displacement sensor with waterproof function

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Embodiment Construction

[0026] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] The overall structure of the present invention is as figure 1As shown, it includes a fixed length 1, a moving ruler 6, several sensor coils 4, a drive circuit 3, a control circuit 5, a display, a communication interface, buttons, dry batteries and the like. The drive circuit 3 includes a driver and a pulse circuit, and the control circuit 5 includes a single-chip microcomputer, a controller, a sampler, a display circuit, a communication interface, and an interface circuit. A series of metal reflective conductors 2 with regular shapes are evenly arranged on the fixed length 1 along the moving direction of the fixed length; the moving ruler 6 is installed on the fixed length 1 through a mechanical structure, and can slide along the fixed length body; A plurality of eddy current sensor coils 4 are installed on the ruler 6, and these senso...

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Abstract

A transducer comprises stationary scale, active scale, transducer coil, driving circuit and control circuit as metal reflecting conductor arranged uniformly as per certain wavelength period and certain ruled shape is erected on stationary scale, a numbers of transducer coils with specific distance and shape are set on active scale, coils are connected to pulse circuit through driver and output sampler of transducer coil is connected to single-chip computer which its output is connected to display through display circuit, to pulse circuit through controller and to external equipment through communication interface.

Description

Technical field: [0001] The invention relates to a large-range displacement sensor with waterproof function, which can be widely used in the fields of measurement test, on-line detection, product inspection, daily life and the like, especially in the field of production and processing, and belongs to the technical field of measuring instruments. Background technique: [0002] Displacement sensors are the most widely used sensors, and large-range displacement sensors are used most in the industrial field, especially in the manufacturing field, such as gratings, magnetic gratings, capacitive gratings, inductive synchros, laser interferometry systems, etc. However, most of these traditional large-range displacement sensors have an obvious shortcoming and deficiency: when there are various liquids in the use environment, the measurement results of the sensors will have large deviations, and some sensors may not even work normally at all. This defect largely affects the use of th...

Claims

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Application Information

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IPC IPC(8): G01B7/02G01D5/12
Inventor 赵辉刘伟文俞朴
Owner SHANGHAI JIAO TONG UNIV
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