CN201311272Y - Non-contact high-precision angle sensor - Google Patents
Non-contact high-precision angle sensor Download PDFInfo
- Publication number
- CN201311272Y CN201311272Y CNU2008202300496U CN200820230049U CN201311272Y CN 201311272 Y CN201311272 Y CN 201311272Y CN U2008202300496 U CNU2008202300496 U CN U2008202300496U CN 200820230049 U CN200820230049 U CN 200820230049U CN 201311272 Y CN201311272 Y CN 201311272Y
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- fixing body
- angle sensor
- magnetic
- magnetic field
- mounting body
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Abstract
The utility model relates to a non-contact high-precision angle sensor based on measuring magnetic field direction, in particular to occasions requiring the real-time precision sampling to angular displacements in industrial automatic instrument controls, and is characterized in that the angle sensor comprises a mounting body (8), an end of a rotary shaft (1) extends into the mounting body (8), the external surface of the rotary shaft (1) is connected with the internal surface of the mounting body (8) through a shaft sleeve (7), thereby being capable of rotating around the rotary shaft (1), one end of the rotary shaft (1) extending in the mounting body (8) is fixed with a pair of parallel magnetic-iron (3), thereby forming the even magnetic field which is in parallel with a magnetic line, and the middle of the magnetic-iron (3) has a magneto-resistive chip (4) which is fixed on the internal surface of the mounting body (8). The utility model has the beneficial effects that the proposal is in the non-contact measurement measuring magnetic field direction, the service life is long, which can overcome magnet-potentiometer temperature drift defects based on the measurement magnetic field intensity principle.
Description
Technical field
The utility model relates to a kind of based on the non-contact type high-precision angle sensor of measuring magnetic direction, is particularly useful for the occasion that requires diagonal displacement accurately to sample in real time in industrial automation instrument control.
Background technology
At present, following dual mode is adopted in the diagonal displacement sampling usually in the industrial automation instrument control:
1, based on the conductive plastic potentiometer of Mystr (conductive plastic material)
Thereby slide plate contacts on conductive plastic film and slides and produces change in resistance.Shortcoming: easily cause the conductive plastics wearing and tearing behind the frequent movement, dropout occurs; Measuring accuracy is a relative value, and precision meets the requirements under certain taking measurement of an angle; Demanding processing and assembly precision; Service load is had higher requirements; Be difficult for forming blast resistance construction; Bigger to the use influence under the occasion of shock and vibration.
2, based on the magnet-potentiometer of measuring the magnetic field intensity principle
The series connection semibridge system SMR element that two performances are identical and rotate the contactless induction between permanent magnet or the yoke and the angular transducer that forms, shortcoming: it is narrow to measure the environment for use temperature range based on magnetic field intensity, exigent assembly precision cannot bear bigger variation and the load installation requirement in gap between sensor and the magnet; Be difficult for forming blast resistance construction.
The utility model content
The purpose of this utility model provides a kind of based on the non-contact type high-precision angle sensor of measuring magnetic direction, it can overcome the influence of aspects such as environment temperature, impact, vibration, machining precision, and it is absolute measurement to the measurement of angle, the measuring accuracy height, realize the blast resistance construction of sensor easily, strengthened the applicability of sensor.
For achieving the above object, the technical solution used in the present invention is:
A kind of non-contact type high-precision angle sensor, its special feature is, comprise fixing body, one end of one rotating shaft stretches in this fixing body, thereby this rotating shaft outside surface is connected and can rotates around the shaft with the fixing body inside surface by an axle sleeve, thereby the end in fixing body is stretched in rotating shaft is fixed with pair of parallel magnet constitutes the parallel uniform magnetic field of a magnetic line of force, there is a magnetic resistance chip to be fixed on the fixing body inside surface at this in the middle of the magnet, be fixed with and the supporting circuit board of magnetic resistance chip on the other fixing body of magnetic resistance chip, this circuit board leads to outside the fixing body by lead and connection terminal.
Wherein stretch out the fixing body place and be provided with O-ring seal in rotating shaft.
Further, wherein outside O-ring seal, also be provided with spacing shim.
The beneficial effects of the utility model are that this scheme is that noncontacting measurement is measured magnetic direction, and the life-span is long, can overcome based on the magnet-potentiometer temperature drift defective of measuring the magnetic field intensity principle, can be applicable to wider temperature range (40 ℃～+ 120 ℃); Can bear bigger variation and the load installation requirement in gap between sensor and the magnet, and form blast resistance construction.
Description of drawings
Accompanying drawing 1 is a schematic diagram of the present utility model;
Accompanying drawing 2 is a structural representation of the present utility model.
Embodiment
Come the utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 2, the utility model comprises fixing body 8, one end of one rotating shaft 1 stretches in this fixing body 8, thereby this rotating shaft 1 outside surface is connected 1 rotation around the shaft by an axle sleeve 7 with fixing body 8 inside surfaces, end in fixing body 8 is stretched in rotating shaft 1 is fixed with pair of parallel magnet 3, thereby constitute the parallel uniform magnetic field of a magnetic line of force, there is a magnetic resistance chip 4 to be fixed on fixing body 8 inside surfaces at this to magnet 3 centres, be fixed with the circuit board 9 supporting with magnetic resistance chip 4 on the other fixing body 8 of magnetic resistance chip 4, this circuit board 9 leads to outside the fixing body 8 by lead 5 and connection terminal.
Stretch out fixing body 8 places in rotating shaft 1 in addition and be provided with O-ring seal 6, outside O-ring seal 6, also be provided with spacing shim 2.
As shown in Figure 1, principle of work of the present utility model is:
Utilize parallel magnet 3, realize uniform magnetic field.Uniform magnetic field is operated under the saturation mode magnetic resistance chip 4.Rotating band moving magnet 3 rotations of rotating shaft 1, the relation by magnetic resistance chip 4 resistance values under the state of saturation change with rotating magnetic field converts resistance variations to output voltage and changes, and realizes the measuring accuracy very high to the output shaft corner.
As shown in Figure 2, according to connection request, determine rotating shaft 1 shaft form, spacing shim 2 guarantees the end play amount, realize preferably every the magnetic effect by selecting suitable fixing body 8, rotating shaft 1 material, magnetic resistance chip 4 is fixed in two magnet, 3 centers, guarantees that magnetic resistance chip 4 is operated under the magnetic saturation state.Form explosion separation structure by control rotating shaft 1 and axle sleeve 7 tolerance clearance amounts, length of fit, roughness, can form the intrinsic safe explosion-proof structure by the circuit safety design.Form explosion suppresion surface 10 between rotating shaft 1 and the fixing body 8, parallel magnet 3 is loaded in the respond well rotating shaft 1 of magnetic, and magnetic resistance chip 4 places parallel magnet 3 centers, and fixing body 8 is installed shell with sensor can form explosion suppresion surface 10.
Claims (3)
1, a kind of non-contact type high-precision angle sensor, it is characterized in that: comprise fixing body (8), one end of one rotating shaft (1) stretches in this fixing body (8), this rotating shaft (1) outside surface is connected (1) rotation around the shaft by an axle sleeve (7) with fixing body (8) thereby inside surface, end in fixing body (8) is stretched in rotating shaft (1) is fixed with pair of parallel magnet (3) thereby constitutes the parallel uniform magnetic field of a magnetic line of force, there is a magnetic resistance chip (4) to be fixed on fixing body (8) inside surface at this in the middle of the magnet (3), be fixed with the circuit board (9) supporting with magnetic resistance chip (4) on the other fixing body (8) of magnetic resistance chip (4), this circuit board (9) leads to outside the fixing body (8) by lead (5) and connection terminal.
2, non-contact type high-precision angle sensor as claimed in claim 1 is characterized in that: wherein stretch out fixing body (8) in rotating shaft (1) and locate to be provided with O-ring seal (6).
3, non-contact type high-precision angle sensor as claimed in claim 2 is characterized in that: wherein also be provided with spacing shim (2) outside O-ring seal (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202300496U CN201311272Y (en) | 2008-12-15 | 2008-12-15 | Non-contact high-precision angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202300496U CN201311272Y (en) | 2008-12-15 | 2008-12-15 | Non-contact high-precision angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311272Y true CN201311272Y (en) | 2009-09-16 |
Family
ID=41108528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202300496U Expired - Fee Related CN201311272Y (en) | 2008-12-15 | 2008-12-15 | Non-contact high-precision angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311272Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819021A (en) * | 2010-04-29 | 2010-09-01 | 哈尔滨工程大学 | Angle direct detection sensor with high level of protection |
| CN102022974A (en) * | 2010-10-29 | 2011-04-20 | 昌辉汽车电气系统（安徽）有限公司 | Calibration method of magnetic induction effect angle sensor |
| CN102564466A (en) * | 2011-11-28 | 2012-07-11 | 武汉理工大学 | Automobile electronic accelerator position sensor |
| CN102589581A (en) * | 2010-12-16 | 2012-07-18 | 阿尔卑斯电气株式会社 | Rotation angle detection device |
| CN102679862A (en) * | 2011-03-18 | 2012-09-19 | 东京计装株式会社 | Detection signal correction method of angular transducer |
| CN103105154A (en) * | 2011-11-11 | 2013-05-15 | 阿自倍尔株式会社 | Angular transducer |
| CN103308077A (en) * | 2012-03-09 | 2013-09-18 | 阿自倍尔株式会社 | Magnetic potentiometer |
| CN104823025A (en) * | 2012-09-07 | 2015-08-05 | 森希玛技术股份有限公司 | Hall-effect-based angular orientation sensor and corresponding methods and devices |
| CN110289475A (en) * | 2018-12-06 | 2019-09-27 | 武汉滨湖电子有限责任公司 | A kind of accurate positioning device based on structural rearrangement technology |
| CN112880539A (en) * | 2021-01-19 | 2021-06-01 | 天津中科华誉科技有限公司 | Non-contact position detection device |
-
2008
- 2008-12-15 CN CNU2008202300496U patent/CN201311272Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819021A (en) * | 2010-04-29 | 2010-09-01 | 哈尔滨工程大学 | Angle direct detection sensor with high level of protection |
| CN102022974B (en) * | 2010-10-29 | 2013-01-23 | 昌辉汽车电气系统（安徽）有限公司 | Calibration method of magnetic induction effect angle sensor |
| CN102022974A (en) * | 2010-10-29 | 2011-04-20 | 昌辉汽车电气系统（安徽）有限公司 | Calibration method of magnetic induction effect angle sensor |
| CN102589581A (en) * | 2010-12-16 | 2012-07-18 | 阿尔卑斯电气株式会社 | Rotation angle detection device |
| CN102589581B (en) * | 2010-12-16 | 2015-07-22 | 阿尔卑斯电气株式会社 | Rotation angle detection device |
| CN102679862B (en) * | 2011-03-18 | 2016-06-29 | 东京计装株式会社 | The detection signal calibration method of angular transducer |
| CN102679862A (en) * | 2011-03-18 | 2012-09-19 | 东京计装株式会社 | Detection signal correction method of angular transducer |
| CN103105154A (en) * | 2011-11-11 | 2013-05-15 | 阿自倍尔株式会社 | Angular transducer |
| CN103105154B (en) * | 2011-11-11 | 2016-03-30 | 阿自倍尔株式会社 | Angular transducer |
| CN102564466B (en) * | 2011-11-28 | 2015-07-22 | 武汉理工大学 | Automobile electronic accelerator position sensor |
| CN102564466A (en) * | 2011-11-28 | 2012-07-11 | 武汉理工大学 | Automobile electronic accelerator position sensor |
| CN103308077A (en) * | 2012-03-09 | 2013-09-18 | 阿自倍尔株式会社 | Magnetic potentiometer |
| CN104823025A (en) * | 2012-09-07 | 2015-08-05 | 森希玛技术股份有限公司 | Hall-effect-based angular orientation sensor and corresponding methods and devices |
| CN110289475A (en) * | 2018-12-06 | 2019-09-27 | 武汉滨湖电子有限责任公司 | A kind of accurate positioning device based on structural rearrangement technology |
| CN110289475B (en) * | 2018-12-06 | 2021-04-06 | 武汉滨湖电子有限责任公司 | Accurate positioning device based on structure reorganization technology |
| CN112880539A (en) * | 2021-01-19 | 2021-06-01 | 天津中科华誉科技有限公司 | Non-contact position detection 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: 20090916 Termination date: 20171215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |