CN202177368U - Non-contact type high-precision angular displacement sensor - Google Patents
Non-contact type high-precision angular displacement sensor Download PDFInfo
- Publication number
- CN202177368U CN202177368U CN2011203234008U CN201120323400U CN202177368U CN 202177368 U CN202177368 U CN 202177368U CN 2011203234008 U CN2011203234008 U CN 2011203234008U CN 201120323400 U CN201120323400 U CN 201120323400U CN 202177368 U CN202177368 U CN 202177368U
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- rotor
- angular displacement
- circuit board
- housing
- shell
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Abstract
The utility model provides a non-contact type high-precision angular displacement sensor, which relates to the technical field of sensor production and comprises a shell. One end of the shell is provided with a plug. A circuit board provided with a switching circuit is fixedly connected with the inside of the shell. Pins are fixed in the plug, and one ends of the pins are respectively fixedly connected to the circuit board. A rotor is disposed on the shell through a rotating support seat, a steel magnet is fixedly connected to the inner end of the rotor in coaxial mode, and the outer end of the rotor extends out of the shell. A Hall element is welded on the circuit board opposite to the steel magnet. The non-contact type high-precision angular displacement sensor adopts a Hall chip capable of measuring a magnetic field rotation angle to measure angular displacement, and has the advantages of being long in service life, shock resistant, large in measuring angle, high in linearity and high in cost performance.
Description
Technical field
The utility model relates to the sensor production technical field.
Background technology
In the technology, automobile AMT (electric control mechanical type automatic speed variator) gear positions sensor is to convert gear positions to electric signal, is transferred to the variator ECU now, judges the foundation of gear positions state as the variator ECU.At present, mainly using contact high precision pot, is brush and resistance substrate sliding contact through mechanical part, and along with relative displacement, resistance value changes, the corresponding change of output voltage signal.This brush and resistance substrate be prone to produce wearing and tearing, or along with the vibrations of automobile, and contact chip might produce moment and throw off loose contact.In addition along with increase service time, the wearing and tearing bits of brush and resistance substrate can be attached between brush and the resistance substrate, can produce loose contact or the output resistance changes, and causes the signal can't normal transmission, and shorten serviceable life.And contact high precision angular displacement sensor will be accomplished 360 ° of measurements, satisfies linearity deviation again less than 0.2%, and manufacturing cost will rise significantly, and every reaches hundreds of units.
Summary of the invention
The utility model purpose is the contactless high precision angular displacement sensor that a kind of cost is low, precision is high can be provided.
The utility model comprises that an end is provided with the housing of plug, connects the circuit board that is furnished with change-over circuit at the housing internal fixation, and at plug internal fixation contact pin, an end of said contact pin is fixedly connected with circuit board respectively; It is characterized in that on housing, arranging a rotor that at the inner magnet steel that is fixedly connected with one heart of said rotor, the outer end of said rotor stretches out in said housing through a rotation supporting seat; With said magnet steel opposed circuit boards on weld Hall element.
During use, the rotor that the outer end is stretched out in the housing outer end is fixedly connected with the AMT position axis.During work, drive rotor rotation, magnet steel and rotor are rotated together through the gear box position axle; When magnet steel rotated, magnetic field produced deflection, and Hall element can be sensed the magnetic field anglec of rotation; Circuit board through being furnished with change-over circuit converts thereof into voltage signal, through routine processes, can make output voltage signal corresponding with the rotor anglec of rotation;, be transferred to the variator ECU from low to high, judge the foundation of gear box position state as ECU.
The utility model adopts the displacement that takes measurement of an angle of the Hall chip can measure the magnetic field anglec of rotation.The one, the life-span long (full stroke serviceable life can greater than 1,200 ten thousand times); The 2nd, anti-vibration (not having contact component); The 3rd, it is big to take measurement of an angle, and can reach 360 ° and measure stroke.The 4th, the linearity is high, and linearity deviation is less than 0.2%; The 5th, cost performance is high, and tangent displacement sensor will be measured 360 °, and will satisfy linearity deviation less than 0.2%, and cost is up to hundreds of units, and this product meets or exceeds this index fully, and cost only needs tens of units.
The utility model adopts contactless design, and not wearing and tearing are used reliably, and the life-span is long, a series of shortcomings that can avoid the contact gear position sensor to bring.This device can be used for AMT on civilian; Militarily can be used for braking changes the thorax machine, dials the bullet wheel, the auxiliary bullet wheel of dialling, and hoisting cage is dialled the corner test of bullet wheel.Also can be applicable to the circle round angle displacement measurement of part of tube automat and other automatic turn-around machine, therefore the fault diagnosis of cannon revolving meber has big popularizing application prospect, the military affairs with reality, society and economic benefit on various gun automatas.
In addition, in order to shield the interference of external magnetic field to Hall element, the utility model also can be provided with the shielding iron plate on the pairing housing in the back side of the said circuit board that connects Hall element.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Embodiment
As shown in Figure 1, the utility model comprises that an end is provided with the housing 1 that plug 12 and both sides are provided for being connected the inserts 11 of usefulness respectively.
As shown in Figure 2, in the one side of housing 1 loam cake 8 is set.At the parallel circuit board that is furnished with change-over circuit 7 of housing 1 internal fixation and loam cake 8, at plug 12 internal fixation contact pins 10, the inner of each contact pin 10 is fixedly connected with circuit board 7 respectively.
On housing 1, arrange a rotor 3 through being the rotation supporting seat 1-1 that is wholely set with housing 1, rotor 3 be axially perpendicular to circuit board 7, at the inner magnet steel 4 that is fixedly connected with one heart of rotor 3.Be fixedly connected with the AMT position axis for ease, the outer end of rotor 3 stretches out in housing 1, also a clip 5 can be set in this end.
On the loam cake 8 relative, fixedly install shielding iron plate 9 with circuit board 7.
Also can be on the housing 1, outside rotation supporting seat 1-1, O-ring seal 2 is set.
Claims (2)
1. contactless high precision angular displacement sensor comprises that an end is provided with the housing of plug, connects the circuit board that is furnished with change-over circuit at the housing internal fixation, and at plug internal fixation contact pin, an end of said contact pin is fixedly connected with circuit board respectively; It is characterized in that on housing, arranging a rotor that at the inner magnet steel that is fixedly connected with one heart of said rotor, the outer end of said rotor stretches out in said housing through a rotation supporting seat; With said magnet steel opposed circuit boards on weld Hall element.
2. according to the said contactless high precision angular displacement sensor of claim 1, it is characterized in that on the pairing housing in the back side of the said circuit board that connects Hall element, the shielding iron plate being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203234008U CN202177368U (en) | 2011-08-31 | 2011-08-31 | Non-contact type high-precision angular displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203234008U CN202177368U (en) | 2011-08-31 | 2011-08-31 | Non-contact type high-precision angular displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202177368U true CN202177368U (en) | 2012-03-28 |
Family
ID=45867244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203234008U Expired - Fee Related CN202177368U (en) | 2011-08-31 | 2011-08-31 | Non-contact type high-precision angular displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202177368U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636108A (en) * | 2012-05-09 | 2012-08-15 | 中信机电制造公司科研设计院 | High-precision angular displacement sensor |
| CN103017797A (en) * | 2011-09-23 | 2013-04-03 | 联创汽车电子有限公司 | Non-contact throttle position sensor |
| CN103048483A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院深圳先进技术研究院 | Angle signal acquiring device and processing method thereof |
| CN103075514A (en) * | 2012-11-26 | 2013-05-01 | 合肥邦立电子股份有限公司 | High-precision non-contact type automobile gear sensor |
| CN103575305A (en) * | 2012-07-24 | 2014-02-12 | 联创汽车电子有限公司 | Special non-contact throttle position sensor for motorcycles |
| CN105350955A (en) * | 2015-11-17 | 2016-02-24 | 恒天九五重工有限公司 | Drill bit positioning device and squeezing, digging and rotatably-expanding drilling machine comprising drill bit positioning device |
-
2011
- 2011-08-31 CN CN2011203234008U patent/CN202177368U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017797A (en) * | 2011-09-23 | 2013-04-03 | 联创汽车电子有限公司 | Non-contact throttle position sensor |
| CN102636108A (en) * | 2012-05-09 | 2012-08-15 | 中信机电制造公司科研设计院 | High-precision angular displacement sensor |
| CN102636108B (en) * | 2012-05-09 | 2014-10-01 | 中信机电制造公司科研设计院 | High-precision angular displacement sensor |
| CN103575305A (en) * | 2012-07-24 | 2014-02-12 | 联创汽车电子有限公司 | Special non-contact throttle position sensor for motorcycles |
| CN103075514A (en) * | 2012-11-26 | 2013-05-01 | 合肥邦立电子股份有限公司 | High-precision non-contact type automobile gear sensor |
| CN103048483A (en) * | 2012-12-07 | 2013-04-17 | 中国科学院深圳先进技术研究院 | Angle signal acquiring device and processing method thereof |
| CN105350955A (en) * | 2015-11-17 | 2016-02-24 | 恒天九五重工有限公司 | Drill bit positioning device and squeezing, digging and rotatably-expanding drilling machine comprising drill bit positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20150831 |
|
| EXPY | Termination of patent right or utility model |