CN202019274U - Magnetic encoder for elevator door system - Google Patents
Magnetic encoder for elevator door system Download PDFInfo
- Publication number
- CN202019274U CN202019274U CN2011201021365U CN201120102136U CN202019274U CN 202019274 U CN202019274 U CN 202019274U CN 2011201021365 U CN2011201021365 U CN 2011201021365U CN 201120102136 U CN201120102136 U CN 201120102136U CN 202019274 U CN202019274 U CN 202019274U
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- China
- Prior art keywords
- encoder
- motor
- encoder circuit
- circuit plate
- circuit board
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- Expired - Lifetime
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Abstract
The utility model provides a magnetic encoder for an elevator door system. The magnetic encoder comprises a motor, a motor rotor, an encoder circuit board, and encoder induction magnetic particles fixed at one end of the motor rotor, wherein the encoder circuit board is positioned at the tail part of the motor casing; a Hall sensor and an A/D (Analog/Digital) converter are arranged on the encoder circuit board; the Hall sensor consists of two Hall elements; the connection lines among the two Hall elements and the center of the encoder circuit board form an isosceles right-angle triangle taking the center of the encoder circuit board as the vertex angle; and the Hall sensor is parallel with and 0.5-2mm away from the end surfaces of the encoder induction magnetic particles. The magnetic encoder provided by the utility model has the advantages of impact and vibration resistance, long service life, wide operating temperature range, lower demand on the clearance between and the concentricity of the encoder induction magnetic particles and the Hall sensor, and simple and compact structure, and is suitable for smaller motors.
Description
Technical field
The utility model relates to a kind of position sensing device of elevator door machine, particularly discloses a kind of magnetic coder of elevator door-motor.
Background technology
At present, the position sensing device that uses on the door machine of elevator generally adopts bistable switch, photoelectric encoder, resolver etc.But these several encoders have bearing is housed, useful life is shorter, and environment for use requires high, and the position transducer installing space that has is big, occupation of land side, and versatility is poor, installs loaded down with trivial detailsly, and the encoder that has can not be exported signal of absolute position or the like.
Summary of the invention
The purpose of this utility model is to overcome the defective that exists in the prior art, provides a kind of simple in structure, easy manufacturing easy for installation, the magnetic coder of safe and reliable elevator door-motor.
The utility model is achieved in that a kind of magnetic coder of elevator door-motor, comprise motor, rotor, encoder circuit plate, it is characterized in that: also comprise the encoder induced magnetism grain that is fixed on rotor one end, described encoder circuit plate is positioned on the motor afterbody housing, described encoder circuit plate is provided with Hall element, A/D converter, described Hall element is made up of 2 Hall elements, and the line at the center of described 2 Hall elements and encoder circuit plate is: with encoder circuit plate center is the isosceles right triangle of drift angle; The end face of described Hall element and encoder induced magnetism grain is parallel to each other, and is provided with the gap of 0.5 ~ 2mm.
Described encoder induced magnetism grain is a cylinder, and radially the line of demarcation is divided into 2 semicylinders, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.
Described encoder circuit plate by screw on motor afterbody housing.
Described encoder circuit plate is provided with signal interface circuit.
The beneficial effects of the utility model are: the induced magnetism grain of the encoder of elevator door-motor does not need to contact with Hall element, the gap that has 0.5 ~ 2mm, can allow the material that has air, water, greasy dirt or any non-magnetic conduction in the gap, its protective capacities is strong, simultaneously, the utility model encoder does not have bearing, shock-resistant, vibration, life-span long, operating temperature range is wide, the gap and the concentricity requirement of encoder induced magnetism grain and Hall element are not high simultaneously, the machinery installation requirement is low, simple and compact for structure, be applicable to the motor that volume is less.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of looking up of the utility model encoder circuit plate.
Fig. 3 is the utility model encoder induced magnetism kernel structure schematic diagram.
Fig. 4 is the utility model output signal coordinate diagram.
Among the figure: 1, Hall element; 2, encoder circuit plate; 3, encoder induced magnetism grain; 4, rotor; 5, A/D converter; 6, motor.
Embodiment
According to Fig. 1 ~ Fig. 3, the utility model comprises motor 6, rotor 4, encoder circuit plate 2, also comprise the encoder induced magnetism grain 3 that is fixed on rotor 4 one ends, described encoder circuit plate 2 is positioned on the motor 6 afterbody housings, described encoder circuit plate 2 is provided with Hall element, A/D converter 5, described Hall element is made up of 2 Hall elements 1, and described 2 Hall elements 1 are with the line at the center of encoder circuit plate 2: with encoder circuit plate 2 centers is the isosceles right triangle of drift angle; Described Hall element is that the end face of two Hall elements 1 and encoder induced magnetism grain 3 is parallel to each other, and is provided with the gap of 0.5 ~ 2mm.Described encoder induced magnetism grain 3 is a cylinder, and radially the line of demarcation is divided into 2 semicylinders, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.Described encoder circuit plate 2 by screw on motor 6 afterbody housings.Described encoder circuit plate 2 is provided with signal interface circuit, can be connected with the external signal processing module.
According to Fig. 4, wherein the angle between the N-S utmost point line of demarcation of X axis presentation code device induced magnetism grain 3 and Hall element 1 angular bisector 90 is spent, the Y-axis line is represented output level, when encoder induced magnetism grain 3 rotates with rotor 4, the Hall element 1 of Hall element detects its sine corresponding with angle 90 degree or the magnetic field of varies with cosine respectively, export corresponding sinusoidal level A and cosine level B then respectively, by digital processing unit the level analog signal is changed into digital signal, and then carry out arc tangent and change, obtain 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 rotor 4 runnings, realize the sensor function that angle detects, input to a machine frequency converter by transmission rotating speed of motor and position are controlled, and then realize the switch door.
Claims (4)
1. the magnetic coder of an elevator door-motor, comprise motor, rotor, encoder circuit plate, it is characterized in that: also comprise the encoder induced magnetism grain that is fixed on rotor one end, described encoder circuit plate is positioned on the motor afterbody housing, described encoder circuit plate is provided with Hall element, A/D converter, described Hall element is made up of 2 Hall elements, and the line at the center of described 2 Hall elements and encoder circuit plate is: with encoder circuit plate center is the isosceles right triangle of drift angle; The end face of described Hall element and encoder induced magnetism grain is parallel to each other, and is provided with the gap of 0.5 ~ 2mm.
2. according to the magnetic coder of the described elevator door-motor of claim 1, it is characterized in that: described encoder induced magnetism grain is a cylinder, and radially the line of demarcation is divided into 2 semicylinders, is respectively the N utmost point in magnetic field and the S utmost point in magnetic field.
3. according to the magnetic coder of the described elevator door-motor of claim 1, it is characterized in that: described encoder circuit plate by screw on motor afterbody housing.
4. according to the magnetic coder of the described elevator door-motor of claim 1, it is characterized in that: described encoder circuit plate is provided with signal interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201021365U CN202019274U (en) | 2011-04-11 | 2011-04-11 | Magnetic encoder for elevator door system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201021365U CN202019274U (en) | 2011-04-11 | 2011-04-11 | Magnetic encoder for elevator door system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202019274U true CN202019274U (en) | 2011-10-26 |
Family
ID=44812941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201021365U Expired - Lifetime CN202019274U (en) | 2011-04-11 | 2011-04-11 | Magnetic encoder for elevator door system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202019274U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636191A (en) * | 2012-04-19 | 2012-08-15 | 浙江理工大学 | Medium and high precision 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 |
| CN107947518A (en) * | 2017-12-29 | 2018-04-20 | 深圳市正德智控股份有限公司 | DC brushless motor |
| CN110870177A (en) * | 2017-07-14 | 2020-03-06 | 三菱电机株式会社 | Rotating motor and door device using same |
-
2011
- 2011-04-11 CN CN2011201021365U patent/CN202019274U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636191A (en) * | 2012-04-19 | 2012-08-15 | 浙江理工大学 | Medium and high precision 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 |
| CN110870177A (en) * | 2017-07-14 | 2020-03-06 | 三菱电机株式会社 | Rotating motor and door device using same |
| CN107947518A (en) * | 2017-12-29 | 2018-04-20 | 深圳市正德智控股份有限公司 | DC brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |
|
| CX01 | Expiry of patent term |