CN101789672A - Magnetic encoder for electric door motor - Google Patents
Magnetic encoder for electric door motor Download PDFInfo
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- CN101789672A CN101789672A CN 201010135308 CN201010135308A CN101789672A CN 101789672 A CN101789672 A CN 101789672A CN 201010135308 CN201010135308 CN 201010135308 CN 201010135308 A CN201010135308 A CN 201010135308A CN 101789672 A CN101789672 A CN 101789672A
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- permanent magnet
- magnetic
- magnetic coder
- detection components
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Abstract
The invention relates to a magnetic encoder for electric door motor, comprising a permanent magnet and a detection assembly. The permanent magnet is fixedly arranged on the rotor of the motor; and the detection assembly is fixedly arranged on the case of the motor and is parallel with one end face of the permanent magnet. The detection assembly comprises two hall sensors and is used for detecting magnetic field produced by the permanent magnet and outputting signal. Compared with the prior art, the invention has the advantages of no bearing, impact resistance, vibration resistance, long service life and free dust and free oil stains.
Description
Technical field
The present invention relates to a kind of position sensing device of electric door motor, especially relate to the magnetic encoder that a kind of electric door motor is used.
Background technology
The operation protection door of the discrepancy glass door of the gate of elevator, building, the shield door of subway, mechanical device etc. generally all uses Electrically operated gate, these Electrically operated gate all to need the power of motor as its driving.For the motor of Electrically operated gate, need have big, the performances such as volume is little, efficient is high, easy control of output torque.Because it is the frequency of utilization of Electrically operated gate is very high, therefore also very high to the reliability requirement of its motor.At present, Chang Yong electric door motor includes brush direct current machine, brshless DC motor, AC induction motor, permagnetic synchronous motor etc.In these several motors, permagnetic synchronous motor is because its output torque is big, power density is big, efficient is high, control performance is superior, maintenance is little etc. advantage is fit to drive Electrically operated gate very much.
The drive unit of permagnetic synchronous motor comprises the position sensing device that is installed on the motor, i.e. encoder.Common encoder has photoelectric encoder, resolver and tachogenerator etc.But these several encoders have is equipped with bearing, and useful life is shorter; The protective capacities that has is poor, operating temperature range is little; The volume that has is excessive, maybe can not export signal of absolute position or the like, is not that very suitable use is on electric door motor therefore.And, more than the cost of several encoders all higher relatively.
Summary of the invention
The objective of the invention is to overcome shortcoming of the prior art with not enough, a kind of employed magnetic coder of Electrically operated gate drive motors that is suitable for is provided.
The present invention adopts following technical scheme to realize: a kind of magnetic encoder for electric door motor comprises a permanent magnet and a detection components.This permanent magnet is fixedly installed on the rotor; This detection components is fixedly installed on the motor housing, and parallel with an end face of described permanent magnet.Described detection components comprises two Hall elements, in order to detect magnetic field and the output signal that permanent magnet produces.
Further, described detection components also comprises a digital processing unit, and it receives the signal of described Hall element, exports the angle signal of the relative motor housing of a permanent magnet after treatment.
Further, described digital processing unit comprises an A/D converter, and the signal of Hall element is handled.
Further, also comprise a printed circuit board (PCB), it is arranged on the rotor, and described permanent magnet is arranged on the described printed circuit board (PCB).
Further, described permanent magnet is a cylinder, and it radially is divided into two semicylinders in the line of demarcation, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.
Further, also comprise a non-magnetic cylindrical sleeve, described cylindrical sleeve is enclosed within an end of machine shaft, and described permanent magnet is fixed on the other end of this cylindrical sleeve.
Further, the gap that has 0.5～2mm between described permanent magnet and the described detection components.
Further, two Hall elements equidistantly become 90 degree to be provided with the axis of described permanent magnet on its plane.
With respect to prior art, magnetic coder of the present invention does not have bearing, shock-resistant, vibration, and the life-span is long.And simple in structure, mechanical part is few, and cost is very low; Installing space is little, is suitable for very much the Electrically operated gate drive motors.
In order to understand the present invention more clearly, set forth the specific embodiment of the present invention below with reference to description of drawings.
Description of drawings
Fig. 1 is the Facad structure schematic diagram of electric door motor magnetic coder of the present invention.
Fig. 2 is the schematic diagram that permanent magnet shown in Figure 1 produces magnetic field.
Fig. 3 is the permanent magnet of magnetic coder shown in Figure 1 and the relative position schematic diagram of Hall element.
Fig. 4 is the output signal diagram of magnetic coder shown in Figure 1.
Embodiment
See also Fig. 1, it is the Facad structure schematic diagram of electric door motor magnetic coder of the present invention.This magnetic coder comprises a permanent magnet 10, a detection components 20, a cylindrical sleeve 30 and a printed circuit board (PCB) (PCB) 40.Wherein, this detection components 20 comprises two Hall elements 22 and a digital processing unit 24, and this digital processing unit 24 has A/D converter.
Geographically, this cylindrical sleeve 30 securely is enclosed within an end of machine shaft 50, this permanent magnet 10 is fixed on the other end of this cylindrical sleeve 30, thereby make this permanent magnet 10 and these machine shaft 50 relative fixed, rotate with motor, the central axis of the central axis of permanent magnet 10 and machine shaft 50 coincides.Wherein, this permanent magnet 10 is a non-magnet material, as aluminium, copper, plastics etc.This detection components 20 is fixed by welding on the printed circuit board (PCB) 40, this printed circuit board (PCB) 40 is arranged on the shell (figure does not show) of motor, thereby detection components 20 is fixed on the shell of motor, and the center that makes detection components 20 simultaneously is on the axis of machine shaft 50.This printed circuit board (PCB) 40 has signal interface circuit, can be connected with the external signal processing module.Parallelly between the end face of this detection components 20 and permanent magnet 10 do not contact, have the gap of 0.5～2mm.
Please consult Fig. 2 simultaneously, it is that permanent magnet 10 shown in Figure 1 produces the schematic diagram in magnetic field.Permanent magnet 10 of the present invention is cylindrical permanent magnets, and this permanent magnet 10 radially line of demarcation 12 is divided into two semicylinders, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.This permanent magnet 10 produces a space sinusoidal magnetic field.
Please consult Fig. 3 simultaneously, it is the permanent magnet 10 of magnetic coder shown in Figure 1 and the relative position schematic diagram of Hall element 22.This Hall element 22 is linear two-way type Hall element, is arranged on this printed circuit board (PCB) 40, and is parallel with the end face of this permanent magnet 10, and equidistantly becomes 90 degree with the axis of permanent magnet 10 on the plane of Hall element 22.
Please consult Fig. 4 simultaneously, it is the output signal diagram of magnetic coder shown in Figure 1.Wherein, X axis is represented the N-S utmost point line of demarcation 12 of permanent magnet 10 and the angle β between two Hall element 22 angular bisectors, and the Y-axis line is represented output level.When permanent magnet 10 rotates around its central axis along with machine shaft 50, Hall element 22a and Hall element 22b detect the magnetic field of its sine corresponding with angle β or varies with cosine respectively, export corresponding sinusoidal level A and cosine level B then respectively.This digital processing unit 24 receives the level analog signal of two Hall elements 22, converts digital signal to by A/D, and then carries out the arc tangent conversion, obtains the angle signal C of a linearity.This linear angles signal C exports by the mode of analog quantity or serial transmission.Thus, can obtain the angle information of machine shaft running, realize the sensor function that angle detects.
With respect to prior art, do not need contact between the permanent magnet of electric door motor magnetic coder of the present invention and the detection components, can allow the material of air, water, oil or any non-magnetic conduction in the gap, so the electric parts of magnetic coder can seal by insulating oil, protective capacities is fine.Simultaneously, magnetic coder does not have bearing, shock-resistant, vibration, and the life-span is long; The gap of permanent magnet and detecting element and concentricity requirement are not high, and rotating parts and fixed part need not mechanical constraints.In addition, the operating temperature range of permanent magnet is wide, and the operating temperature range of magnetic coder is retrained by electric component only.And simple in structure, mechanical part is few, and cost is very low; Installing space is little, is fit to the electric door motor to the volume requirement strictness.
The present invention is not limited to above-mentioned execution mode, if various changes of the present invention or distortion are not broken away from the spirit and scope of the present invention, if these changes and distortion belong within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and distortion.
Claims (9)
1. a magnetic encoder for electric door motor is characterized in that: comprise
One permanent magnet is fixedly installed on the rotor;
One detection components is fixedly installed on the motor housing, and parallel with an end face of described permanent magnet;
Described detection components comprises two Hall elements, in order to detect magnetic field and the output signal that permanent magnet produces.
2. magnetic coder according to claim 1 is characterized in that: the gap that has 0.5～2mm between described permanent magnet and the described detection components.
3. magnetic coder according to claim 1 is characterized in that: two Hall elements equidistantly become 90 degree to be provided with the axis of described permanent magnet on its plane.
4. magnetic coder according to claim 1 is characterized in that: described detection components also comprises a digital processing unit, and it receives the signal of described Hall element, exports the angle signal of the relative motor housing of a permanent magnet after treatment.
5. magnetic coder according to claim 4 is characterized in that: described digital processing unit comprises an A/D converter, and the signal of Hall element is handled.
6. according to the described magnetic coder of the arbitrary claim of claim 1 to 5, it is characterized in that: also comprise a printed circuit board (PCB), it is arranged on the rotor, and described permanent magnet is arranged on the described printed circuit board (PCB).
7. according to the described magnetic coder of the arbitrary claim of claim 1 to 5, it is characterized in that: described permanent magnet is a cylinder, and it radially is divided into two semicylinders in the line of demarcation, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.
8. magnetic coder according to claim 7 is characterized in that: also comprise a cylindrical sleeve, described cylindrical sleeve is enclosed within an end of machine shaft, and described permanent magnet is fixed on the other end of this cylindrical sleeve.
9. magnetic coder according to claim 8 is characterized in that: described cylindrical sleeve is a non-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010135308 CN101789672A (en) | 2010-03-26 | 2010-03-26 | Magnetic encoder for electric door motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010135308 CN101789672A (en) | 2010-03-26 | 2010-03-26 | Magnetic encoder for electric door motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101789672A true CN101789672A (en) | 2010-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010135308 Pending CN101789672A (en) | 2010-03-26 | 2010-03-26 | Magnetic encoder for electric door motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN101789672A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401665A (en) * | 2011-11-16 | 2012-04-04 | 宁波麦克斯电子科技有限公司 | New motor magnetic encoder |
| CN103296839A (en) * | 2013-06-17 | 2013-09-11 | 日本电产凯宇汽车电器（江苏）有限公司 | Steering motor with magnetic rotating coder |
| CN103730990A (en) * | 2014-01-13 | 2014-04-16 | 温岭市东菱电机有限公司 | Special motor for opening and closing of electrically operated gate |
| CN104567945A (en) * | 2015-01-07 | 2015-04-29 | 北京龙邱智能科技有限公司 | Magnetic encoder |
| CN106451928A (en) * | 2016-08-31 | 2017-02-22 | 江苏大电机电有限公司 | Permanent magnet brushless direct current motor equipped with magnetic encoder |
| CN109367727A (en) * | 2018-12-03 | 2019-02-22 | 深圳市苇渡智能科技有限公司 | A kind of remote controler and electronic surfboard |
| CN110212697A (en) * | 2019-06-19 | 2019-09-06 | 电子科技大学 | A kind of wheeled robot wheel hub driving integrated motor |
| CN110518723A (en) * | 2018-05-22 | 2019-11-29 | 北京佩特来电器有限公司 | A kind of BSG motor and its double magnetic circuit rotor |
| CN110785916A (en) * | 2017-06-30 | 2020-02-11 | 日本电产株式会社 | Method for manufacturing motor, positioning device for sensor magnet part, motor, and motor manufacturing device |
| CN113162333A (en) * | 2021-03-19 | 2021-07-23 | 浙江仕优驱动科技有限公司 | Brushless motor's magnetic ring encoder structure and brushless motor |
| CN113390440A (en) * | 2020-03-11 | 2021-09-14 | 深圳绿米联创科技有限公司 | Method, device and storage medium for detecting position state of target object |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009028407A1 (en) * | 2007-08-28 | 2009-03-05 | Ntn Corporation | Rotary sensor unit |
| CN101412372A (en) * | 2008-11-20 | 2009-04-22 | 四川红光汽车机电有限公司 | Non-contacting intelligent electric throttle |
-
2010
- 2010-03-26 CN CN 201010135308 patent/CN101789672A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009028407A1 (en) * | 2007-08-28 | 2009-03-05 | Ntn Corporation | Rotary sensor unit |
| CN101412372A (en) * | 2008-11-20 | 2009-04-22 | 四川红光汽车机电有限公司 | Non-contacting intelligent electric throttle |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401665A (en) * | 2011-11-16 | 2012-04-04 | 宁波麦克斯电子科技有限公司 | New motor magnetic encoder |
| CN103296839A (en) * | 2013-06-17 | 2013-09-11 | 日本电产凯宇汽车电器（江苏）有限公司 | Steering motor with magnetic rotating coder |
| CN103730990A (en) * | 2014-01-13 | 2014-04-16 | 温岭市东菱电机有限公司 | Special motor for opening and closing of electrically operated gate |
| CN104567945A (en) * | 2015-01-07 | 2015-04-29 | 北京龙邱智能科技有限公司 | Magnetic encoder |
| CN106451928A (en) * | 2016-08-31 | 2017-02-22 | 江苏大电机电有限公司 | Permanent magnet brushless direct current motor equipped with magnetic encoder |
| CN110785916A (en) * | 2017-06-30 | 2020-02-11 | 日本电产株式会社 | Method for manufacturing motor, positioning device for sensor magnet part, motor, and motor manufacturing device |
| CN110785916B (en) * | 2017-06-30 | 2022-02-22 | 日本电产株式会社 | Method for manufacturing motor, positioning device for sensor magnet part, motor, and motor manufacturing device |
| CN110518723A (en) * | 2018-05-22 | 2019-11-29 | 北京佩特来电器有限公司 | A kind of BSG motor and its double magnetic circuit rotor |
| WO2020113768A1 (en) * | 2018-12-03 | 2020-06-11 | 深圳市苇渡智能科技有限公司 | Remote control and electric surfboard |
| CN109367727A (en) * | 2018-12-03 | 2019-02-22 | 深圳市苇渡智能科技有限公司 | A kind of remote controler and electronic surfboard |
| CN110212697A (en) * | 2019-06-19 | 2019-09-06 | 电子科技大学 | A kind of wheeled robot wheel hub driving integrated motor |
| CN110212697B (en) * | 2019-06-19 | 2024-04-05 | 电子科技大学 | Wheel type robot hub driving integrated motor |
| CN113390440A (en) * | 2020-03-11 | 2021-09-14 | 深圳绿米联创科技有限公司 | Method, device and storage medium for detecting position state of target object |
| CN113390440B (en) * | 2020-03-11 | 2023-10-20 | 深圳绿米联创科技有限公司 | Method, device and storage medium for detecting position state of target object |
| CN113162333A (en) * | 2021-03-19 | 2021-07-23 | 浙江仕优驱动科技有限公司 | Brushless motor's magnetic ring encoder structure and brushless motor |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 529000, No. 105, Jinshan building, No. 82, Jianshe Road, Guangdong, Jiangmen Applicant after: Jiangmen Modrol Electric Co., Ltd. Address before: 529000, No. 105, Jinshan building, No. 82, Jianshe Road, Guangdong, Jiangmen Applicant before: Jiangmen Mengde Electric Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANGMEN MENGDE ELECTRIC CO., LTD. TO: JIANGMEN MODROL ELECTRIC CO., LTD. |
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 529100 No. 49, Yongkang Road, Jiangmen, Guangdong Applicant after: Jiangmen Modrol Electric Co., Ltd. Address before: 529000, No. 105, Jinshan building, No. 82, Jianshe Road, Guangdong, Jiangmen Applicant before: Jiangmen Modrol Electric Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100728 |