CN109186439A - A kind of sensor high stable, highly reliable, low-loss frame member - Google Patents
A kind of sensor high stable, highly reliable, low-loss frame member Download PDFInfo
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- CN109186439A CN109186439A CN201811267941.6A CN201811267941A CN109186439A CN 109186439 A CN109186439 A CN 109186439A CN 201811267941 A CN201811267941 A CN 201811267941A CN 109186439 A CN109186439 A CN 109186439A
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- skeleton part
- frame member
- coil
- weld tabs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to a kind of sensor high stables, highly reliable, low-loss frame member, including coil, skeleton part and switching weld tabs, micro-crystalline ceramic material can be processed in the material selection of skeleton part, coil is adhesively fixed on the upper end of skeleton part, produce mounting groove in the lower end of skeleton part, switching weld tabs is mounted in the mounting groove, and two ends of coil are respectively welded on switching weld tabs.The present invention realizes good frame member dimensional accuracy, improves the zero-bit controllability and consistency of sensor, improves the stability of sensor, improve assembly efficiency, and reduce product cost.
Description
Technical field
The present invention relates to sensor technical fields, especially a kind of to ensure sensor under the conditions of wide Wen Cheng, high-frequency excitation
High reliability, high stability and low-loss frame member are a kind of skeletons suitable for high precision electro eddy displacement sensor
Component.
Background technique
Key link of the skeleton part as displacement sensor especially eddy current displacement sensor, major function are to realize
The bearing and fixation of measuring coil, measuring coil are then the sensitive measurement functions of realizing sensor.In some requirement width Wen Cheng, height
Reliability, high stability and low-loss special application field, it is desirable that skeleton part itself has high dimensional accuracy, high size steady
Low-dielectric loss under qualitative and high frequency condition.
Currently, skeleton part mainly uses engineering plastics material, common in high-precision low-loss eddy current displacement sensor
Have resinous material and polytetrafluoro class material, as described in patent 201610858756.9, the problem of existing in this case, is main
It is that poor dimensional stability causes the bias instaility of sensor poor under wide warm journey working condition.In addition, in high-temperature electric currents sensing
In device, skeleton part then uses refractory ceramics component, as described in patent 201611052347.6, the problem of presence in this case
Be: due to refractory ceramics form by a firing can not mach feature, the dimensional accuracy of skeleton part is relatively poor, causes to sense
The zero-bit of device is difficult to control, and can not be applied to high-precision sensor field.Another situation, skeleton part are set with installation shell
It is calculated as integral structure, selects metal material aluminium, as described in patent 201610071634.5, it is steady that the program solves size
Qualitative question and dimensional accuracy problem, but the problem of bringing is the problem that dielectric loss is big and coil insulating reliability is lower.
In addition, the installation positioning of coil is designed by the corresponding structure of skeleton itself in terms of the layout designs of frame member
It realizes, under the conditions of limiting outer dimension, corresponding location structure is mostly complicated thin-walled step and groove structure, to skeleton part
The machinability of material proposes higher requirement.
Summary of the invention
It is an object of the invention to provide in place of making up the deficiencies in the prior art, a kind of dimensional accuracy is high, wide warm journey condition
Lower good stability of the dimension, dielectric loss be low and the frame member scheme of high reliablity.
The purpose of the present invention is what is realized by following technological means:
A kind of sensor high stable, highly reliable, low-loss frame member, it is characterised in that: including coil, skeleton part
Micro-crystalline ceramic material can be processed with the material selection of switching weld tabs, skeleton part, coil is adhesively fixed on the upper end of skeleton part,
Mounting groove is produced in the lower end of skeleton part, and switching weld tabs is mounted in the mounting groove, and two ends of coil, which are respectively welded at, to be turned
It connects on weld tabs.
Moreover, the skeleton part is heavy wall without wire casing structure.
Moreover, using Nian Jie installation fixed form between switching weld tabs and the skeleton part.
Moreover, after the coil, skeleton part and switching weld tabs assembling, using the method for colloid encapsulating by above-mentioned skeleton
Component carries out sealing.
The advantages and positive effects of the present invention are:
1, frame member of the invention is mainly made of skeleton, coil, switching weld tabs.Coil is the measurement portion of sensor
Point, it is installed on the end of skeleton part, switching weld tabs is installed in the mounting groove of the skeleton other end.The present invention realizes good
Frame member dimensional accuracy improves the zero-bit controllability and consistency of sensor.
2, the material design of middle skeleton part of the present invention selects processable micro-crystalline ceramic material, which there is low line to rise
Coefficient, about 6ppm, more than an order of magnitude low with the line expansion factor of polytetrafluoro class material compared with resinae material, in wide warm journey item
There is lesser thermal deformation under part, realize good frame member dimensional stability under the conditions of wide Wen Cheng, improve sensor
Stability, especially bias instaility.
3, since micro-crystalline ceramic blank has machinable, available good scantling precision, part is put down
The index parameters such as face degree, verticality can achieve micrometer level, therefore makes skeleton part using it and effectively reduce sensing
The zero-bit of device and the zero-bit consistency for improving sensor have significant advantage compared with resinae and polytetrafluoro class.
4, the micro-crystalline ceramic skeleton part has low dielectric coefficient, has lower dielectric in high frequency condition lower sensor
Loss improves the quality factor of sensor, reduces biography so that the present invention be made to realize the low-dielectric loss under high frequency condition
The overall power consumption of sensor.
5, from reliability and realize that angle considers, the invention middle skeleton structural design of fittings using heavy wall without wire casing structure,
Simple and reliable, using no wire casing thick cylinder shape structure, the installation fixation of coil is realized by special tooling, improves frame member
While reliability, reduction product cost, the consistency and assembly efficiency of coil assembly can also be improved.
6, the process planning procedure of the present invention simplifies frame member structure structure design philosophy and special tooling auxiliary
It combines, realizes good complementary effect, while improving the reliability and parameter consistency of sensor, also reduce production
Product cost.
Detailed description of the invention
Fig. 1 is the structure chart of frame member；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the structure chart of skeleton part；
Fig. 4 is the bottom view of Fig. 3.
In figure: 1, coil；2, skeleton part；3, switching weld tabs.
Specific embodiment
With reference to the accompanying drawing in detail narration the embodiment of the present invention, it should be noted that the present embodiment be it is narrative, no
It is restrictive, this does not limit the scope of protection of the present invention.
A kind of sensor high stable, highly reliable, low-loss frame member, including coil 1, skeleton part 2 and switching weldering
Piece 3, micro-crystalline ceramic material can be processed in the material selection of skeleton part, and skeleton part is heavy wall without wire casing structure.Using dedicated
Coil is adhesively fixed on the upper end of skeleton part by tooling, and mounting groove is produced in the lower end of skeleton part, and switching weld tabs is two,
The mode for being all made of bonding is mounted in the mounting groove, and two ends of coil are respectively welded on switching weld tabs.
After the assembling for completing above-mentioned coil, skeleton part and weld tabs of transferring, using the method for colloid encapsulating by above-mentioned skeleton
Component carries out sealing.
Claims (4)
1. a kind of sensor high stable, highly reliable, low-loss frame member, it is characterised in that: including coil, skeleton part and
Micro-crystalline ceramic material can be processed in the material selection of switching weld tabs, skeleton part, and coil is adhesively fixed on the upper end of skeleton part, bone
Mounting groove is produced in the lower end of frame part, and switching weld tabs is mounted in the mounting groove, and two ends of coil are respectively welded at switching
On weld tabs.
2. a kind of sensor high stable according to claim 1, highly reliable, low-loss frame member, it is characterised in that:
The skeleton part is heavy wall without wire casing structure.
3. a kind of sensor high stable according to claim 1, highly reliable, low-loss frame member, it is characterised in that:
Nian Jie installation fixed form is used between switching weld tabs and the skeleton part.
4. a kind of sensor high stable according to claim 1, highly reliable, low-loss frame member, it is characterised in that:
After coil, skeleton part and the switching weld tabs assembles, above-mentioned frame member is carried out by sealing using the method for colloid encapsulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267941.6A CN109186439A (en) | 2018-10-29 | 2018-10-29 | A kind of sensor high stable, highly reliable, low-loss frame member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267941.6A CN109186439A (en) | 2018-10-29 | 2018-10-29 | A kind of sensor high stable, highly reliable, low-loss frame member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186439A true CN109186439A (en) | 2019-01-11 |
Family
ID=64944220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267941.6A Pending CN109186439A (en) | 2018-10-29 | 2018-10-29 | A kind of sensor high stable, highly reliable, low-loss frame member |
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| CN106500580A (en) * | 2016-09-26 | 2017-03-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Eddy current displacement sensor and its probe and coil |
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| US3826886A (en) * | 1971-04-15 | 1974-07-30 | Fujitsu Ltd | Contact material |
| CN201331328Y (en) * | 2008-12-26 | 2009-10-21 | 中国船舶重工集团公司第七○七研究所 | Barrel-shaped movable coil angle sensor |
| CN101709985A (en) * | 2009-11-05 | 2010-05-19 | 广州市番禺奥迪威电子有限公司 | Plesoelectric ultrasonic flow sensor |
| CN102359801A (en) * | 2011-09-26 | 2012-02-22 | 中环天仪股份有限公司 | Abraded plate alarming device of electromagnetic flow gauge and installation process |
| CN103245394A (en) * | 2013-03-29 | 2013-08-14 | 北京遥测技术研究所 | Point-type liquid level sensor based on multilayer annular capacitor structure |
| CN103900617A (en) * | 2014-04-14 | 2014-07-02 | 上海瑞视仪表电子有限公司 | Method for manufacturing electrical vortex sensor probe |
| CN104729396A (en) * | 2015-03-24 | 2015-06-24 | 浙江大学 | High-temperature eddy-current displacement sensor temperature compensation method based on temperature online measurement and sensing device |
| CN105157869A (en) * | 2015-05-21 | 2015-12-16 | 浙江大学 | High-temperature sensing device based on eddy current |
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Application publication date: 20190111 |