CN103245853B - Device for measuring responding range of Hall element - Google Patents
Device for measuring responding range of Hall element Download PDFInfo
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- CN103245853B CN103245853B CN201310138395.7A CN201310138395A CN103245853B CN 103245853 B CN103245853 B CN 103245853B CN 201310138395 A CN201310138395 A CN 201310138395A CN 103245853 B CN103245853 B CN 103245853B
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- hall element
- axle
- zero point
- circuit control
- magnet steel
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a device for measuring a responding range of a Hall element, relates to a device in the field of automatic control, and aims to solve the problems that the conventional devices are low in measuring accuracy and inaccurate in measurement of the responding range of the Hall element. The device comprises a rotation mechanism and a circuit control device, wherein the circuit control device controls the rotation mechanism to move. The device disclosed by the invention can accurately measure the responding angle range of the Hall element to magnetic steel in the rotation mechanism, and then the accurate limit function of the Hall element is achieved; and the device comprises the rotation mechanism and the circuit control device, the rotation mechanism achieves the relative rotational motion of the magnetic steel to the Hall element, and the circuit control device achieves motor driving and braking, angle output of an encoder and signal control of the Hall element.
Description
Technical field
The present invention relates to automation field, is specifically related to utilize slew gear frock to realize the relative gyration of Hall element and magnet steel, and by control circui image data, finally realizes the responding range accurately measuring Hall element.
Background technology
Hall element due to have sound construction, volume little, lightweight, be quick on the draw, the advantage such as easy for installation, power consumption is little, be used widely in various equipment.Usually, Hall element uses, as the electric limit switch of gyration with magnet steel collocation in mechanical mechanism.In use, make a magnetic pole of magnet steel near Hall element, the signal of Hall element output low level or closedown, the signal exporting high-potential voltage (high level) when magnetic pole leaves or open.
When slew gear is compact, when Hall element and magnet steel sensitive surface close together, Hall element and magnet steel self physical dimension can not be ignored the impact of sensed position.Composition graphs 1, Hall element is in fixed position, and magnet steel does gyration with radius R.When magnet steel and Hall element just pair time (sensitive surface normal overlaps), two sensitive surface are at a distance of L.When L is less, magnet steel and Hall element can just respond front A °, and namely two sensitive surface normals become during A ° of angle to respond, and this response angle becomes large with the reduction of two sensitive surface distance L, and vice versa.Realize the exact value that magnet steel and the effect of Hall element accurate limiting need obtain this response angle.Due to magnet steel Distribution of Magnetic Field more complicated, being difficult to by calculating this response angle, therefore needing to carry out by device the accurate responding range surveying to obtain magnet steel and Hall element.
Summary of the invention
The present invention solves existing apparatus to there is measuring accuracy low and measure the coarse problem of responding range of Hall element, provides a kind of device measuring Hall element responding range.
Measure the device of Hall element responding range, this device comprises slew gear and circuit control device; Circuit control device controls slew gear motion; Described slew gear comprise support, axle head gland, axle, Hall element seat, zero point limited block, zero point limited post, scrambler and motor;
Described Hall element seat is fixed on support, and Hall element is bonded in the groove on Hall element seat, and described axle is arranged in the dead eye of support, one end stationary shaft side pressure lid of axle, and the other end is connected with motor by shaft coupling; Adhesive magnetic steel in the groove of described axle head gland; Axle installs scrambler, and described zero point, limited block was fixed on Hall element seat, and zero point, one end of limited post was inserted in the square groove of limited block at zero point, and the other end is stuck on axle.
Principle of work of the present invention: Hall element of the present invention is arranged on grooved position on Hall element seat, Hall element seat is fixed on support, and magnet steel is fixed on the axle head gland grooved position place be fastenedly connected with axle, by zero-point positioning limited post, zero point limited block cooperation can determine Hall element and magnet steel reference position angle, i.e. reference position Hall element sensitive surface normal and magnet steel sensitive surface normal angle α; The precision of this angle is ensured by machining and assembling.Circuit control device controls to power on, and scrambler exports magnet steel reference position angle value β 1; Motor belt motor moving axis rotates until Hall element is responded to, and now circuit control device controls motor stalling, and scrambler exports magnet steel final position angle value β 2; The angular displacement beta that magnet steel turns over=β 2-β 1; And at final position Hall element sensitive surface normal and magnet steel sensitive surface normal angle, namely Hall element is to the induction range 2A=2 (alpha-beta) of magnet steel.Magnet steel is when reference position, and the single-chip microcomputer in circuit control device first communicates with FPGA, obtains the initial position angle of scrambler, is also the initial position angle of magnet steel, and outputs on interactive display; Then single-chip microcomputer sends continuous impulse signal to motor, and drive motor rotates by given pace, drives magnet steel to do gyration relative to Hall element.In this process, scrambler exports real time position angle continuously.When magnet steel enters in Hall element induction range, Hall element sends signal, and single-chip microcomputer receives signal to be stopped sending pulse enable signal motor stalling instantaneously.The position angle that now scrambler exports is the final position angle of magnet steel.
Beneficial effect of the present invention:
One, measure accurately, because the factor affecting measurement precision comprises the initial relative position (angle α) of Hall element and magnet steel and the angular displacement (angular displacement beta) of magnet steel rotation, Hall element and magnet steel are arranged on Hall element seat and axle head gland by the present invention respectively, respective installation site accuracy both being easy to ensure by high-accuracy mechanical processing, and by zero point limited post, zero point limited block cooperation ensure both initial relative position (angle α).It is omnidistance by encoder feedback angle position that magnet steel turns to final position from reference position, at final position Hall element response moment motor stalling, and then magnet steel stall, therefore angular displacement (angular displacement beta) measuring accuracy of magnet steel rotation is higher.
Two, device of the present invention can measure the Hall element of different distance and the induction range of magnet steel.The principal element affecting the induction range of Hall element and magnet steel is distance between the two, namely both just pair time distance L.Hall element is arranged in the groove on Hall element seat, changes by machining the distance L that gash depth can change Hall element and magnet steel.Distance L can be determined according to embody rule demand, and then determine the gash depth installing Hall element on Hall element seat.Therefore apparatus of the present invention are applicable to the Hall element of different distance and the induction range measurement of magnet steel.
Accompanying drawing explanation
Fig. 1 is that schematic diagram responded to by existing Hall element and magnet steel;
Fig. 2 is the right view of slew gear in the device of measurement Hall element responding range of the present invention;
Fig. 3 is the external structure schematic diagram of slew gear in the device of measurement Hall element responding range of the present invention;
Fig. 4 is the schematic internal view of slew gear in the device of measurement Hall element responding range of the present invention;
Fig. 5 is the schematic diagram of circuit control device in the device of measurement Hall element responding range of the present invention.
Embodiment
Embodiment one, composition graphs 3 illustrate present embodiment, measure the device of Hall element responding range, comprise slew gear and circuit control device, the relative gyration of Hall element and magnet steel is realized by slew gear, and then combined with circuit control realizes Hall element and measures the responding range of magnet steel in slew gear, described slew gear needs to drive magnet steel to do gyration, produces angular displacement relative to fixing Hall element.Described slew gear comprise support 2, axle head gland 3, Hall element seat 5, zero point limited block 6 and zero point that zero point, limited post 7 formed is spacing, scrambler 10, shaft coupling 12, motor 13 and axle 4.This slew gear is using base 1 and support 2 as fixed support.Hall element seat 5 is fixed on support 2, and Hall element 9 is bonded in the groove of Hall element seat 5 assigned address simultaneously.Rotation axis 4 is support to form axle system with bearing, is arranged in the dead eye of support 2.Axle 4 one end is connected with axle head gland 3, adhesive magnetic steel 8 in the groove of axle head gland 3 assigned address.Axle 4 other end is connected with motor shaft by shaft coupling 12.On axle 4, be provided with hollow shaft encoder, hollow rotary shaft and the axle 4 of scrambler 10 are fastenedly connected simultaneously, the angular displacement that record axle rotates, and are also the angular displacements of magnet steel simultaneously.
Circuit control device in present embodiment realizes the functions such as motor driving, encoder angular output, Hall element response.Circuit control device comprises power supply, single-chip microcomputer, FPGA, motor driver and serial communication; Wherein power supply is that single-chip microcomputer, FPGA and motor driver are powered, driving and braking that single-chip microcomputer realizes motor by communicating with motor driver.Hall element sends signal when responding, and by signal feedback to single-chip microcomputer.Single-chip microcomputer is communicated with scrambler by FPGA simultaneously, obtains the angle value of encoder feedback, and is presented on interactive display by this angle value by serial communication.
Slew gear axis side pressure lid 3 radius described in present embodiment is 18mm, and namely magnet steel 8 turning radius is 18mm.Hall element seat 5 gash depth is 5mm, and when ensureing that Hall element 9 and magnet steel 8 are just pair, distance is 1.5mm.Hall element 9 is arranged on the counterclockwise 90 ° of positions of Hall element seat 5, and magnet steel is arranged on the counterclockwise 45 ° of positions of axle head gland 3, and both reference position angles are 45 °.
Embodiment two, composition graphs 2 and Fig. 4 illustrate present embodiment, the installation that present embodiment is the device of the measurement Hall element responding range described in embodiment one and the course of work: first, first axle 4 is installed in the dead eye of support 2 together with bearing during installation, and fixes with bearing gland 17 and bearing lock nut 15 respectively at bearing 16 two ends.Again hollow shaft encoder is arranged on axle 4, fixes with scrambler gland 11, tighten scrambler lock-screw, tubular shaft and axle 4 are fixed together.Then motor 13 is fixed on motor cabinet 14, and motor cabinet 14 is fixed on support 2, tighten shaft coupling 12 jackscrew simultaneously, connect motor shaft and axle 4.Axle head gland 3 is fixed on axle 4 spindle nose, scrambler seat is fixed on support 2.Finally install zero point limited post 6 and zero point limited block 7, ensure the reference position of Hall element 9 and magnet steel 8.
The course of work: be energized first to during measurement scrambler 10, read and record axle 4 current location angle beta 1.Remove zero point limited post 6 and zero point limited block 7, axle system can be rotated.Be energized then to motor 13, motor shaft band moving axis 4 rotates, and makes magnet steel 8 gradually near Hall element 9, until Hall element 9 responds, and motor power-off.Read and the axle 4 current location angle beta 2 of record coding device output.The turned angular displacement beta of magnet steel=β 2-β 1 can be calculated.Finally calculate the induction range 2A=2 (45-β) of Hall element to magnet steel.
Claims (1)
1. measure the device of Hall element responding range, this device comprises slew gear and circuit control device; Circuit control device controls slew gear motion; It is characterized in that, described slew gear comprises support (2), axle head gland (3), axle (4), Hall element seat (5), limited block at zero point (6), limited post at zero point (7), scrambler (10) and motor (13);
Described Hall element seat (5) is fixed on support (2), Hall element (9) is bonded in the groove on Hall element seat (5), described axle (4) is arranged in the dead eye of support (2), one end stationary shaft side pressure lid (3) of axle (4), the other end is connected with motor (13) by shaft coupling (12); Adhesive magnetic steel (8) in the groove of described axle head gland (3); Axle (4) is installed scrambler (10), described limited block at zero point (6) is fixed on Hall element seat (5), the one end at limited post at zero point (7) is inserted in the square groove at limited block at zero point (6), and the other end is stuck on axle (4); Described circuit control device comprises single-chip microcomputer, FPGA, motor driver and serial communication; Driving and braking that described single-chip microcomputer realizes motor by communicating with motor driver; The response signal of Hall element feeds back to single-chip microcomputer; Single-chip microcomputer is communicated with scrambler by FPGA simultaneously, obtains the angle information of encoder feedback, and is exported through serial communication by the angle information of described encoder feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310138395.7A CN103245853B (en) | 2013-04-19 | 2013-04-19 | Device for measuring responding range of Hall element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310138395.7A CN103245853B (en) | 2013-04-19 | 2013-04-19 | Device for measuring responding range of Hall element |
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| Publication Number | Publication Date |
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| CN103245853A CN103245853A (en) | 2013-08-14 |
| CN103245853B true CN103245853B (en) | 2015-06-10 |
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| CN201310138395.7A Expired - Fee Related CN103245853B (en) | 2013-04-19 | 2013-04-19 | Device for measuring responding range of Hall element |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103438193B (en) * | 2013-09-06 | 2016-01-20 | 哈尔滨工业大学 | A kind of swirl gear with mechanical stop limiter |
| CN114979401B (en) * | 2022-06-16 | 2023-04-07 | 中国科学院长春光学精密机械与物理研究所 | Open-loop scanning mechanism and control method |
Citations (6)
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| CN101398290A (en) * | 2007-09-25 | 2009-04-01 | 杰克陈 | Angle measurement device |
| JP2009145086A (en) * | 2007-12-11 | 2009-07-02 | Niles Co Ltd | Non-contact rotational angle detecting sensor |
| CN201666795U (en) * | 2010-03-31 | 2010-12-08 | 比亚迪股份有限公司 | Angle sensor |
| CN102102996A (en) * | 2010-12-16 | 2011-06-22 | 重庆易控科技有限责任公司 | Over-360-degree-angle limit sensor device |
| JP2013047694A (en) * | 2008-08-26 | 2013-03-07 | Nikon Corp | Encoder device, and rotation information detecting method for encoder device |
| CN202885777U (en) * | 2012-09-27 | 2013-04-17 | 宁波市北仑机械电器有限公司 | Non-contact type standard current output angular displacement sensor |
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2013
- 2013-04-19 CN CN201310138395.7A patent/CN103245853B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398290A (en) * | 2007-09-25 | 2009-04-01 | 杰克陈 | Angle measurement device |
| JP2009145086A (en) * | 2007-12-11 | 2009-07-02 | Niles Co Ltd | Non-contact rotational angle detecting sensor |
| JP2013047694A (en) * | 2008-08-26 | 2013-03-07 | Nikon Corp | Encoder device, and rotation information detecting method for encoder device |
| CN201666795U (en) * | 2010-03-31 | 2010-12-08 | 比亚迪股份有限公司 | Angle sensor |
| CN102102996A (en) * | 2010-12-16 | 2011-06-22 | 重庆易控科技有限责任公司 | Over-360-degree-angle limit sensor device |
| CN202885777U (en) * | 2012-09-27 | 2013-04-17 | 宁波市北仑机械电器有限公司 | Non-contact type standard current output angular displacement sensor |
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| CN103245853A (en) | 2013-08-14 |
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Granted publication date: 20150610 |