CN102564293A - Non-contact angle sensor - Google Patents
Non-contact angle sensor Download PDFInfo
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- CN102564293A CN102564293A CN2010106194888A CN201010619488A CN102564293A CN 102564293 A CN102564293 A CN 102564293A CN 2010106194888 A CN2010106194888 A CN 2010106194888A CN 201010619488 A CN201010619488 A CN 201010619488A CN 102564293 A CN102564293 A CN 102564293A
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- angle sensor
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- rotating shaft
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Abstract
The invention provides a non-contact angle sensor, which comprises a housing, a bearing assembly, a rotary shaft, a round magnet and a circuit board; the bearing assembly is arranged in the housing, and comprises a plurality of bearings, each of which is provided with a corresponding collar; the rotary shaft is arranged on the bearings, one end of the rotary shaft is extended out of the housing, and the bottom of the other end of the rotary shaft is provided with a round groove; the round magnet is embedded in the round groove of the rotary shaft; and the circuit board is arranged in the housing and opposite to the rotary shaft, and comprises a Hall sensor chip corresponding to the round magnet. Compared with the prior art, the non-contact angle sensor has the characteristics of high measurement precision, high reliability and long service life, can bear high axial force and radial force, and is non-contact.
Description
Technical field
The present invention relates to the non-contact angle sensor that a kind of automotive electronicsization and Industry Control Application detect the turning axle anglec of rotation.
Background technology
At present; No matter be locomotive bed, electromechanical equipment; Still all can be applied to the sensor that the angle of rotating speed to its rotating shaft class rotating mechanism, rotation detects on automobile, steamer even the aircraft; This type of angular transducer kind is a lot, for example can be the sensor of inductance type, resistance-type, condenser type, photo-electric, potentiometer formula or other form.Usually angular transducer is mounted in the steering mechanism; Angular transducer is connected with signal processing circuit; Signal processing circuit is connected with display circuit; Like this, the angular transition that can mechanism be turned over is for the electric signal that can read and in display circuit, show, and can improve the accuracy of controlling direction.For example the flat-bed trailer for engineer operation is an example; Increase gradually the application scenario of flat-bed trailer, and industry is made and built it is in great demand, and the direction control of flat-bed trailer is its important technological parameters; Because its wheel is more, so need know the angle information of each wheel.
Existing angular transducer is contact mostly; With the resistor type angle sensor is example; Mechanical variable resistance must will accurately be aimed at rotating shaft (assembly error requires high) when mounted; To guarantee to move normally,, limit to some extent so when installing, also must cooperate assembly precision with placement simultaneously because mechanical variable resistance volume is also quite big.In addition, because mechanical variable resistance must contact with rotating shaft, therefore except assembly error,, also influence the degree of accuracy of control easily, even lost efficacy because of the abrasion that contact not only influence its serviceable life.
In view of this; Research and develop and apply non-contact angle sensor in recent years abroad one after another; With the magnetosensitive non-contact angle sensor is example, and it is that magneto sensor is placed rotating magnetic field, and it exports voltages having different magnitude because of the difference along with rotational angle; Owing to be contactless, can not wear and tear does not have noise yet.With respect to contact type angle sensor, have long service life and control accuracy advantages of higher, therefore be applicable to the application of automotive electronicsization with the Industry Control of various requirement strictness.
For non-contact angle sensor, be example with Hall type angular transducer commonly used, it is a kind of sensor that utilizes the Hall effect of semiconductor material to carry out measurement of angle.Notification number has disclosed a kind of non-contact type rotating angle sensor that is applied in automobile or the motorcycle electric-control system for the patent documentation of " 201628538U " Chinese utility model.
And there is following problem in existing non-contact angle sensor main: the sensor of (1), traditional Hall type is not considered the big axial force and the size of radial force, and axial force and the radial force that can bear are smaller, and be inapplicable on engineering machinery.(2), because supply voltage is unstable, cause the output of Hall chip power supply unstable, influence control accuracy; And the employing Voltage stabilizing module, the volume of angular transducer and price will increase again.(3) degree of protection of axle head is lower, and on whole angular transducer, the place a little less than the sealing is exactly the place that axle connects, and affects the quality of sensor.(4), since the angle of contact along with the increase of its access times, its precision and nonlinearity erron are also becoming greatly.
Summary of the invention
The object of the present invention is to provide a kind of non-contact angle sensor, be used to solve the axial force that the sensor of traditional Hall type can bear and radial force is less, the unstable lower problem of degree of protection that influences control accuracy and axle head of supply voltage.
A kind of non-contact angle sensor of the present invention comprises: housing, in the accommodation space of hollow is arranged; Be located at the bearing assembly in the housing, comprise several bearings in the said bearing assembly, said several bearings all contact with the inwall of said housing, and each bearing is equipped with corresponding clip spare; Be located at the rotating shaft on the bearing, a wherein end of said rotating shaft stretches out from said housing, and the bottom of the other end is provided with circular groove; Circular magnet is embedded in the circular groove of said rotating shaft; Be located in the housing, with said rotating shaft over against circuit board, comprise the Hall element chip corresponding on the said circuit board with said circular magnet.
Alternatively, the quantity of said bearing assembly centre bearer is two or surpasses two a plurality of.
Alternatively, said clip spare is jump ring or snap ring.
Alternatively, said circular magnet is the permanent magnet of diametrical magnetization.
Alternatively, the supply voltage of said circuit board is 9V to 36V, is output as the voltage signal of 0.2V to 4.8V.
Alternatively, said non-contact angle sensor comprises that also the power supply of said Hall element chip is to be provided by the voltage reference chip.
Alternatively, said voltage reference chip provides the direct supply of 5V.
Alternatively, the crossing end at said rotating shaft and said housing has the end cap seal structure.
Alternatively, said end cap seal structure comprises O-ring seal lid and O-ring seal.
Alternatively, said non-contact angle sensor also comprises the bottom of the accommodation space that is used for the said housing of capping.
In sum, of the present invention have a following advantage:
1, owing to adopted the bearing assembly that constitutes by a plurality of bearings; Bearing in the bearing assembly all contacts with the inwall of housing, and each bearing is equipped with corresponding jump ring or snap ring, compared to prior art; Can bear bigger axial force and radial force; It is applicable in large-scale automotive electronicsization and the Industry Control Application, more can reduces loss, increase the service life.
2, said non-contact angle sensor adopts a kind of wide voltage input; Single power supply mode is provided in the work of master chip; Adopt the voltage reference chip master chip 5V to be provided power supply simultaneously as power supply; Satisfy the stability of power supply, thereby guarantee to export uniform stability, improve measuring accuracy.
3, the crossing end at said rotating shaft and said housing utilizes stamping technology to carry out end cap seal and between centers sealing, has reached good sealing effectiveness, has improved the degree of protection of axle head.
Description of drawings
Fig. 1 is a non-contact angle sensor of the present invention cut-open view in one embodiment.
Embodiment
Seeing that still existing such as the axial force that can bear and radial force of existing non-contact angle sensor is less, because power supply is exported problems such as the degree of protection of instability and axle head is lower.Therefore, inventor of the present invention improves prior art, has proposed a kind of new non-contact angular transducer, in the hope of addressing the above problem.
Below will come the present invention is elaborated through specific embodiment.
See also Fig. 1, it is a non-contact angle sensor of the present invention cut-open view in one embodiment.As shown in Figure 1, non-contact angle sensor 1 of the present invention comprises: housing 10; The bearing assembly 11 that constitutes by at least two bearings and corresponding clip spare; Rotating shaft 12; Circular magnet 13; Circuit board 14 with Hall element chip 140; And bottom 15.
Be arranged on the interior bearing assembly 11 of accommodation space of housing 10, comprise continuous two bearing B1, B2, these two bearing B1, B2 all contact with the inwall of housing 10.In addition, for making bearing B1, B2 assembling firmly, each bearing B1, B2 are equipped with corresponding clip spare C1, C2, and in the present embodiment, clip spare C1, C2 can be jump ring or snap ring, respectively in the bearing B1 of correspondence, the bottom of B2.In addition, for two bearing B1, B2 can being worked alone and not collision each other, between two bearing B1, B2, also comprise the packing ring D that shields.What need explanation is; In the present embodiment; Though constituting bearing assembly by two bearings is that example describes, not as limit, in other embodiments; Quantity of the bearing in the bearing assembly (can for greater than two a plurality of) and set-up mode (for example at a distance of the certain intervals setting) thereof still can have other variations, repeat no more at this.
As stated, owing to adopted the bearing assembly 11 that is made up of a plurality of bearing B1, B2, the bearing B1 in the bearing assembly 11, B2 all contact with the inwall of housing; And each bearing B1, B2 are equipped with corresponding jump ring or snap ring; Compared to prior art, can bear bigger axial force and radial force, it is applicable in large-scale automotive electronicsization and the Industry Control Application; More can reduce loss, increase the service life.
It is last that rotating shaft 12 is arranged on bearing B1, the B2 of bearing assembly 11.A wherein end of rotating shaft 12 stretches out from housing 10, and the bottom of the other end then is provided with circular groove 120.In the present embodiment, rotating shaft 12 is cylindric, and can be processed by non-magnetic metal (for example being stainless steel).
Work better under not being affected by the external environment for making non-contact angle sensor 1 of the present invention; One of them important techniques index is exactly the protection intensity of sealing; Because the part of rotating shaft 12 leans out housing 10, so rotating shaft 12 is just higher relatively with the requirement of the degree of protection of the sealing at the crossing end place of housing 10.In view of this, in the present invention, the end cap seal structure 16 with sealing safeguard function also is provided at the crossing end of said rotating shaft and said housing.Said end cap seal structure 16 specifically comprise be positioned at that housing 10 is outer, the O-ring seal 160 (in the present embodiment, preferably, being V-shaped seal ring) on rotating shaft 12 periphery edges and be positioned at the O-ring seal lid 162 on the O-ring seal 160.Through the cooperation of above-mentioned O-ring seal lid 162 and O-ring seal 160, can guarantee the good sealing effectiveness that has of rotating shaft 12 axle heads, improved the degree of protection of axle head.In addition, in the present embodiment, when assembling rotating shaft 12, the O-ring seal 17 that is positioned at housing 10, rotating shaft 12 periphery edges (in the present embodiment, preferably, being the X RunddichtringO) is provided also, thereby can have guaranteed the between centers sealing of rotating shaft 12.
Have, non-contact angle sensor 1 of the present invention also comprises the bottom 15 of the accommodation space that is used for casing 10 again.In the present embodiment, bottom 15 can be processed by non-magnetic metal (for example being aluminium alloy), when assembling, is locked on the housing 10 with utilizing O-ring seal 150 (in the present embodiment, preferably, being O molded lines circle) and screw 152 sealings.
When using non-contact angle sensor 1 of the present invention; Rotating shaft 12 is connected with measured body, and measured body drives rotating shaft and rotates, and then drives circular magnet 13 rotations; Hall element chip 140 in the circuit board 14 keeps fixed; At this moment, circular magnet can make the magnetic flux through Hall element chip 140 sensitive surface occur by negative 1 zero one just or by positive 1 negative continuous variations, then on Hall element chip 140 sensitive surface the equally distributed magnetic field of formation; Be the linear change characteristic with regard to the electric signal that Hall element chip 140 is induced like this, thereby obtain the anglec of rotation of measured body.
In sum, of the present invention have a following advantage:
1, owing to adopted the bearing assembly that constitutes by a plurality of bearings; Bearing in the bearing assembly all contacts with the inwall of housing, and each bearing is equipped with corresponding jump ring or snap ring, compared to prior art; Can bear bigger axial force and radial force; It is applicable in large-scale automotive electronicsization and the Industry Control Application, more can reduces loss, increase the service life.
2, said non-contact angle sensor adopts a kind of wide voltage input; Single power supply mode is provided in the work of master chip; Adopt the voltage reference chip master chip 5V to be provided power supply simultaneously as power supply; Satisfy the stability of power supply, thereby guarantee to export uniform stability, improve measuring accuracy.
3, the crossing end at said rotating shaft and said housing utilizes stamping technology to carry out end cap seal and between centers sealing, has reached good sealing effectiveness, has improved the degree of protection of axle head.
The foregoing description is just listed expressivity principle of the present invention and effect is described, but not is used to limit the present invention.Any personnel that are familiar with this technology all can make amendment to the foregoing description under spirit of the present invention and scope.Therefore, rights protection scope of the present invention should be listed like claims.
Claims (10)
1. a non-contact angle sensor is characterized in that, comprising:
Housing, in the accommodation space of hollow is arranged;
Be located at the bearing assembly in the housing, comprise several bearings in the said bearing assembly, said several bearings all contact with the inwall of said housing, and each bearing is equipped with corresponding clip spare;
Be located at the rotating shaft on the bearing, a wherein end of said rotating shaft stretches out from said housing, and the bottom of the other end is provided with circular groove; Circular magnet is embedded in the circular groove of said rotating shaft;
Be located in the housing, with said rotating shaft over against circuit board, comprise the Hall element chip corresponding on the said circuit board with said circular magnet.
2. non-contact angle sensor according to claim 1 is characterized in that, the quantity of said bearing assembly centre bearer is two or surpasses two a plurality of.
3. non-contact angle sensor according to claim 1 is characterized in that said clip spare is jump ring or snap ring.
4. non-contact angle sensor according to claim 1 is characterized in that, said circular magnet is the permanent magnet of diametrical magnetization.
5. non-contact angle sensor according to claim 1 is characterized in that the supply voltage of said circuit board is 9V to 36V, is output as the voltage signal of 0.2V to 4.8V
6. non-contact angle sensor according to claim 1 is characterized in that, also comprises: the power supply of said Hall element chip is to be provided by the voltage reference chip.
7. non-contact angle sensor according to claim 6 is characterized in that said voltage reference chip provides the direct supply of 5V.
8. non-contact angle sensor according to claim 1 is characterized in that, has the end cap seal structure at the crossing end of said rotating shaft and said housing.
9. non-contact angle sensor according to claim 8 is characterized in that, said end cap seal structure comprises O-ring seal lid and O-ring seal.
10. non-contact angle sensor according to claim 1 is characterized in that, also comprises the bottom of the accommodation space that is used for the said housing of capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106194888A CN102564293A (en) | 2010-12-31 | 2010-12-31 | Non-contact angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106194888A CN102564293A (en) | 2010-12-31 | 2010-12-31 | Non-contact angle sensor |
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| CN102564293A true CN102564293A (en) | 2012-07-11 |
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| CN2010106194888A Pending CN102564293A (en) | 2010-12-31 | 2010-12-31 | Non-contact angle sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090777A (en) * | 2013-01-31 | 2013-05-08 | 深圳市测力佳控制技术有限公司 | Rotation position measurer and measuring method |
| 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 |
| CN104165579B (en) * | 2013-05-16 | 2017-01-11 | 阿自倍尔株式会社 | Rotation angle detection device |
| CN106643818A (en) * | 2016-07-11 | 2017-05-10 | 北京航空航天大学 | Multiple-angle position indication sensor |
| CN107119401A (en) * | 2016-02-24 | 2017-09-01 | 北京大豪科技股份有限公司 | The high position detecting device of pin and embroidery machine |
| CN110006336A (en) * | 2018-11-14 | 2019-07-12 | 中国空空导弹研究院 | A kind of small-sized high dynamic high precision numeral output magnetism encoder and installation control method |
| CN116945194A (en) * | 2023-09-18 | 2023-10-27 | 鹰星精密工业（深圳）有限公司 | Application method for fusing internet and cloud computing by using multi-contact mold manipulator |
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| US5657544A (en) * | 1995-09-26 | 1997-08-19 | Ntn Corporation | Device for detecting the angle of rotation |
| US20060017430A1 (en) * | 2004-07-20 | 2006-01-26 | Honeywell International, Inc. | Offset magnet rotary position sensor |
| CN101782367A (en) * | 2010-01-30 | 2010-07-21 | 林颖 | Non-contact type rotating angle sensor |
| CN201555598U (en) * | 2009-04-22 | 2010-08-18 | 南京奥联汽车电子电器有限公司 | Non-contact magnetic inductive type clutch turn angle sensor |
| CN101819021A (en) * | 2010-04-29 | 2010-09-01 | 哈尔滨工程大学 | Angle direct detection sensor with high level of protection |
| CN201666795U (en) * | 2010-03-31 | 2010-12-08 | 比亚迪股份有限公司 | Angle sensor |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5657544A (en) * | 1995-09-26 | 1997-08-19 | Ntn Corporation | Device for detecting the angle of rotation |
| US20060017430A1 (en) * | 2004-07-20 | 2006-01-26 | Honeywell International, Inc. | Offset magnet rotary position sensor |
| CN201555598U (en) * | 2009-04-22 | 2010-08-18 | 南京奥联汽车电子电器有限公司 | Non-contact magnetic inductive type clutch turn angle sensor |
| CN101782367A (en) * | 2010-01-30 | 2010-07-21 | 林颖 | Non-contact type rotating angle sensor |
| CN201666795U (en) * | 2010-03-31 | 2010-12-08 | 比亚迪股份有限公司 | Angle sensor |
| CN101819021A (en) * | 2010-04-29 | 2010-09-01 | 哈尔滨工程大学 | Angle direct detection sensor with high level of protection |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090777A (en) * | 2013-01-31 | 2013-05-08 | 深圳市测力佳控制技术有限公司 | Rotation position measurer and measuring method |
| CN103090777B (en) * | 2013-01-31 | 2016-09-28 | 深圳市测力佳控制技术有限公司 | A kind of rotation position measurer and measuring method |
| CN104165579B (en) * | 2013-05-16 | 2017-01-11 | 阿自倍尔株式会社 | Rotation angle detection device |
| 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 |
| CN107119401A (en) * | 2016-02-24 | 2017-09-01 | 北京大豪科技股份有限公司 | The high position detecting device of pin and embroidery machine |
| CN106643818A (en) * | 2016-07-11 | 2017-05-10 | 北京航空航天大学 | Multiple-angle position indication sensor |
| CN110006336A (en) * | 2018-11-14 | 2019-07-12 | 中国空空导弹研究院 | A kind of small-sized high dynamic high precision numeral output magnetism encoder and installation control method |
| CN116945194A (en) * | 2023-09-18 | 2023-10-27 | 鹰星精密工业（深圳）有限公司 | Application method for fusing internet and cloud computing by using multi-contact mold manipulator |
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Address after: 200433 room 323, No. 702-60, National Road, Shanghai, Yangpu District Applicant after: Fin control (Shanghai) Limited by Share Ltd Address before: 200090 101D, 2767 Pingliang Road, Shanghai, Yangpu District, China Applicant before: Shanghai Pal-Fin Auto Control Technology Co., Ltd. |
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Application publication date: 20120711 |