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Multiple core tandem electric inductance sensor

An inductive sensor and sensor technology, which is applied in the direction of transmission of sensing components, instruments, and electrical devices using electric/magnetic devices, can solve problems such as short measurement length, and achieve the effects of small error, accurate measurement and simple structure.

Inactive Publication Date: 2010-06-09
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes a multi-core series-connected inductance sensor, the purpose of which is to overcome the shortcoming of the existing single-core inductance sensor, which has a short measurement length and can only be used to measure small displacements. The instrument is used to measure the length of a large range

Method used

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  • Multiple core tandem electric inductance sensor
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  • Multiple core tandem electric inductance sensor

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Experimental program
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Effect test

Embodiment 1

[0016] Multi-core series inductance sensor, select 4 cores to be equidistant in series, that is, core 4, core 2 6, core 3 8 and core 4 10 are connected in series with non-ferromagnetic metal wire 9 equidistant, the sensor The coil 2 is fixed on the support 16, the non-ferromagnetic type 10 with 4 magnetic cores connected in series is equidistantly connected in series with the non-ferromagnetic metal wire 9, the sensor coil 2 is fixed on the support 16, and 4 magnetic cores are connected in series The non-ferromagnetic metal wire 9 is tightened on the moving work slide table support 15, such as image 3 , first aim the measured workpiece on the working slide at the starting point of the measured size with a collimator (it can be a camera, not shown in the figure), and at this time the first magnetic core 4 should be in the middle of a pair of coils , the displayed reading should be zero. When the working slide moves a certain distance, aim at the end point of the measured size ...

Embodiment 2

[0018] Multi-core series connection inductance sensor, choose 4 cores connected in series at unequal distances, that is, core 4, core 2 6, core 3 8 and core 4 10 are connected in series with non-ferromagnetic metal wire 9 at unequal distances , the non-ferromagnetic metal wire 9 is tightened on the fixed support 15, and the multi-core series inductance sensor 17 (with coil 2 inside) clamped on the support 16 is fixed on the moving work slide 18, such as image 3 , first aim the measured workpiece on the working slide at the starting point of the measured size with a collimator (it can be a camera, not shown in the figure), and at this time the first magnetic core 4 should be in the middle of a pair of coils , the displayed reading should be zero. When the working slide moves a certain distance, aim at the end point of the measured size with a collimator (it can be a camera). If the reading on the digital display is 200.0003, then the magnetic core three 8 is in the middle of t...

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Abstract

The multicore series ringer sensor is to connect the patch panel with the sensor top. A pair of loop is winded between the magnetic canister and framework under the patch panel. The grip extension rodis connected under the sensor. It is characterized in that: at least two magnetic cores are connected at the sensor axis by the nonferromagnetic metal thread which is tightening at the two ends of the working table. The array between the magnetic core can be equidistant or unequally distance, which can be adjusted according to the special size of detected workpiece. The invention can be used in inductance length measuring instrument and metroscope; also it can be used in inductance stepping gauge or tongue.

Description

technical field [0001] The invention relates to an inductance sensor for measuring displacement, in particular to a multi-core series connection inductance sensor for displacement measurement. Background technique [0002] At present, the inductance sensors used in micrometers, length measuring machines, altimeters, and step gauges are all single-core structures. This kind of ordinary inductance sensors is affected by the small linear range, and the measurement length is very short. Can be used to measure small displacements. Ordinary axial inductive sensor, when the probe touches the workpiece, the small change in the size of the workpiece will cause a small displacement of the magnetic core through the guide rod and the connecting rod, and the inductance change will occur on a pair of coils. Voltage output, through the instrument to display the change of displacement. But the ordinary axial inductive sensor has a linear range of only ±300μm, so it cannot be used for larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02G01D5/20
Inventor 王焕诒刘唯吴锡其陆翔宇屠锦阳吴站雷
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY