CN202002858U - Hall velocity measurement device - Google Patents
Hall velocity measurement device Download PDFInfo
- Publication number
- CN202002858U CN202002858U CN2011200938339U CN201120093833U CN202002858U CN 202002858 U CN202002858 U CN 202002858U CN 2011200938339 U CN2011200938339 U CN 2011200938339U CN 201120093833 U CN201120093833 U CN 201120093833U CN 202002858 U CN202002858 U CN 202002858U
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- hall
- velocity measurement
- magnetic steel
- hall element
- speed
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Abstract
The utility model relates to a Hall velocity measurement device which comprises a velocity measurement gear disk (10) and at least two Hall sensors (20), wherein the distance between induction parts of the two Hall sensors (20) is the sum of at least one tooth pitch and one-fourth tooth pitch. Each Hall sensor (20) comprises magnetic steel (21) and a Hall element (22) fixedly connected with the magnetic steel (21), and the magnetic steel end of the Hall sensor (20) faces to a teeth part of the velocity measurement gear disk (10). For the Hall velocity measurement device, two groups of Hall magnetic steel assemblies are adopted and are respectively staggered by (n plus 1/4) teeth pitches; therefore, two paths of orthogonal pulse waveforms which are respectively staggered by the time of T/4 are realized. Simultaneously, by judging the sequence of the waveforms of the two Hall elements, the forward or reverse rotation of the equipment can be identified. In addition, the adoption of the novel Hall elements increases the teeth number of the gear disk, improves the low-velocity measurement resolution, and reduces low-velocity torque pulse of a driving system.
Description
Technical field
The utility model relates to measuring technology, particularly is used for the Hall checkout equipment that rotating speed detects.
Background technology
Speed pickup is mainly used to the rotating speed of the machine turns parts in the measurement mechanical transmission, for example motor speed, engine speed etc.It is several that the kind of speed pickup mainly contains photo-electric, magneto-electric and Hall etc. at present.Main hall speed sensor generally is made up of toothed disc, magnet and Hall element at present.Magnet and Hall element are installed near near the outer knuckle-tooth of toothed disc, and the teeth groove of toothed disc, magnet and Hall element are formed a magnetic circuit system like this, and when toothed disc rotated, the magnetic field of passing Hall element changed because of magnetic circuit, thus output pulse waveform.Number of pulses by measuring unit's time just can be calculated the toothed disc rotating speed.The general output of existing gear type hall speed sensor has only monopulse, and pulse waveform is bad, and the low speed measuring error is big, and in some application scenarios that rotary speed precision is had relatively high expectations, for example electric automobile master drive system often can not satisfy the requirement of control.The monopulse speed pickup can only be measured the size of rotating speed and can't measure and turn to, and needing to be not suitable for rotating and need to know the application scenario that turns to.
Summary of the invention
The utility model provides a kind of Hall speed measuring device, adopts the method for dual-Hall sensor, solves the technical matters that measuring accuracy in the prior art is not high and can not discern rotating.
The utility model comprises the measure speed gears dish for this Hall speed measuring device that provides is provided, be arranged near at least two Hall elements of the outer knuckle-tooth portion of described measure speed gears dish, wherein the spacing between two Hall element sensing parts is tooth pitch at least/4, described Hall element comprises magnet steel and the Hall element of fixedlying connected with it, and the magnet steel end of described Hall element is towards the tooth portion of measure speed gears dish.
The utility model adopts two groups of Hall magnet steel assemblies, and (n+1/4) tooth pitch that staggers respectively, the orthogonal pulses waveform of T/4 time thereby the realization two-way staggers respectively.Simultaneously, before and after the waveform of differentiating two Hall elements, can tell the rotating of equipment.Exception adopts novel Hall element, increases the toothed disc number of teeth, improves the low speed Measurement Resolution, reduces the drive system low-speed torque ripple.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model Hall speed measuring device.Fig. 2 is the oscillogram of the utility model output.
Embodiment
In conjunction with above-mentioned description of drawings specific embodiment of the utility model.
By among Fig. 1 and Fig. 2 as can be known, this Hall speed measuring device comprises measure speed gears dish 10, be arranged near the Hall element 20 the outer knuckle-tooth of described measure speed gears dish 10 portions, described Hall element 20 is at least two, and wherein the spacing between two Hall element 20 sensing parts is at least 1/4 tooth pitch.Preferred version of the present utility model is that the spacing between described wherein two Hall element 20 sensing parts is added 1/4 tooth pitch at least one tooth.The Hall element 22 that described Hall element 20 comprises magnet steel 21 and fixedlys connected with it, the magnet steel end of described Hall element 20 is towards the tooth portion of measure speed gears dish 10.
The Hall speed measuring device mainly is made up of toothed disc, magnet steel, Hall element etc.Each 2 of magnet steel and Hall elements and stagger (n+1/4) tooth pitch near the toothed disc cylindrical along the toothed disc circumference, n=0 wherein, 1,2,3 ...The magnet steel magnetizing direction is along toothed disc radially, and magnet steel, Hall and toothed disc form a simple magnetic circuit system at this moment.VD is a DC input voitage, when the toothed disc uniform rotation, thereby owing to toothed disc tooth, the surperficial changes of magnetic field that has influence on above-mentioned magnetic circuit system magnetic resistance change rate and then have influence on the process Hall of the staggered process of groove magnet steel, the alternate of Hall magnetic field makes Hall export a pulse waveform, as VA among Fig. 1, shown in the VB.The T/4 because two Hall elements (n+1/4) tooth pitch that staggers, its output pulse waveform also stagger, quadrature shows as Fig. 2 each other.The toothed disc rotating speed can be measured in this two voltage waveform signals input control corresponding unit.Among the figure, the leading VB T/4 time of VA, when rotating speed was reverse, output waveform then became the leading VA T/4 time of VB, knows that in view of the above toothed disc turns to.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. Hall speed measuring device, comprise measure speed gears dish (10), be arranged near the Hall element (20) of the outer knuckle-tooth of described measure speed gears dish (10) portion, it is characterized in that: described Hall element (20) is at least two, and wherein the spacing between two Hall elements (20) sensing part is at least 1/4 tooth pitch.
2. Hall speed measuring device according to claim 1 is characterized in that: the spacing between described wherein two Hall elements (20) sensing part is added 1/4 tooth pitch at least one tooth.
3. Hall speed measuring device according to claim 1 and 2, it is characterized in that: the Hall element (22) that described Hall element (20) comprises magnet steel (21) and fixedlys connected with it, the magnet steel end of described Hall element (20) is towards the tooth portion of measure speed gears dish (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200938339U CN202002858U (en) | 2011-04-01 | 2011-04-01 | Hall velocity measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200938339U CN202002858U (en) | 2011-04-01 | 2011-04-01 | Hall velocity measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202002858U true CN202002858U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200938339U Expired - Lifetime CN202002858U (en) | 2011-04-01 | 2011-04-01 | Hall velocity measurement device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202002858U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944692A (en) * | 2012-11-09 | 2013-02-27 | 江苏大学 | Detection system and detection method for hammer head speed of hydraulic counterblow hammer |
| CN103728878A (en) * | 2014-01-10 | 2014-04-16 | 四川省纺织科学研究院 | Over-rotation protection circuit |
| CN105905764A (en) * | 2016-06-15 | 2016-08-31 | 上海三菱电梯有限公司 | Elevator traction machine |
| CN106757846A (en) * | 2016-12-14 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of bottom line detecting system |
| CN109282927A (en) * | 2018-11-20 | 2019-01-29 | 广东盈动高科自动化有限公司 | A kind of axis torch measuring system and measurement method |
| CN112816221A (en) * | 2019-11-18 | 2021-05-18 | 中船广西船舶及海洋工程有限公司 | Marine diesel engine rotating speed measuring and simulating generation tool |
| CN113200422A (en) * | 2021-03-29 | 2021-08-03 | 武汉船用机械有限责任公司 | Cable winch |
| CN114526995A (en) * | 2022-04-22 | 2022-05-24 | 成都理工大学 | Pipeline magnetization simulation detection system under action of composite load |
-
2011
- 2011-04-01 CN CN2011200938339U patent/CN202002858U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944692A (en) * | 2012-11-09 | 2013-02-27 | 江苏大学 | Detection system and detection method for hammer head speed of hydraulic counterblow hammer |
| CN103728878A (en) * | 2014-01-10 | 2014-04-16 | 四川省纺织科学研究院 | Over-rotation protection circuit |
| CN105905764A (en) * | 2016-06-15 | 2016-08-31 | 上海三菱电梯有限公司 | Elevator traction machine |
| CN113401772A (en) * | 2016-06-15 | 2021-09-17 | 上海三菱电梯有限公司 | Elevator traction machine |
| CN106757846A (en) * | 2016-12-14 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of bottom line detecting system |
| CN109282927A (en) * | 2018-11-20 | 2019-01-29 | 广东盈动高科自动化有限公司 | A kind of axis torch measuring system and measurement method |
| CN109282927B (en) * | 2018-11-20 | 2023-09-01 | 广东盈动高科自动化有限公司 | Shaft torque measurement system and measurement method |
| CN112816221A (en) * | 2019-11-18 | 2021-05-18 | 中船广西船舶及海洋工程有限公司 | Marine diesel engine rotating speed measuring and simulating generation tool |
| CN113200422A (en) * | 2021-03-29 | 2021-08-03 | 武汉船用机械有限责任公司 | Cable winch |
| CN114526995A (en) * | 2022-04-22 | 2022-05-24 | 成都理工大学 | Pipeline magnetization simulation detection system under action of composite load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN GREATLAND ELECTRICS INC. Free format text: FORMER NAME: SHENZHEN GLELEC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000, Shenzhen, Guangdong Guangming District, Gongming office, West Tian community hi tech Industrial Park fifth to two floor Patentee after: SHENZHEN GREATLAND ELECTRICS INC. Address before: 5, 1-2 floor, 518000 Shenzhen Science Park, West Village, Guangming town, Gongming Town, Guangming District, Guangdong, China Patentee before: Shenzhen Glelec Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
|
| CX01 | Expiry of patent term |