CN104236438A - Length measuring device on basis of Hall sensor - Google Patents
Length measuring device on basis of Hall sensor Download PDFInfo
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- CN104236438A CN104236438A CN201410503956.3A CN201410503956A CN104236438A CN 104236438 A CN104236438 A CN 104236438A CN 201410503956 A CN201410503956 A CN 201410503956A CN 104236438 A CN104236438 A CN 104236438A
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- reel
- magnet
- length
- rotating shaft
- magnetic field
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Abstract
The invention relates to length measurement of cantilevers cranes, in particular to a length measuring device on the basis of a Hall sensor. The length measuring device comprises a reel arranged in a shell, a rope winds the reel, the reel is fixedly mounted at one end of a rotary shaft, a magnet is fixedly arranged on the end face of the other end of the rotary shaft, and a length sensor is arranged closely to the magnet. The magnet is driven to rotate by pulling the rope on the reel, the length sensor senses a magnetic field generated by rotation of the magnet, sensing signals are transmitted to a processor, and the processor calculates pulling length of the rope according to change of the magnetic field. Compared with the prior art, the length measuring device adopts the non-contact sensor to measure data, abrasion of the measuring device is prevented, service life is prolonged and reliability is improved.
Description
Technical field
The present invention relates to mechanical field, be specifically related to the measurement of the jib collapsing lengths such as crane, front handling mobile crane, high altitude vehicle.
Background technology
In engineering machinery and other commercial units, as pump truck, crane, truck-mounted crane, front handling mobile crane, high-altitude operation vehicle etc. all need to measure the lifting angle of its mechanical arm and the length etc. of lifting rope, to fulfil assignment.The product of prior art is the boom frame telescopic length detection coordinated with reductor and multi-turn pot, the reductor be made up of gear set, precision can be deteriorated because of gear wear along with the increase and decrease of access times, in use also can there is breakpoint or loose contact because repeatedly rubbing in pot, produce misdata, affect measurement result.
Summary of the invention
For above-mentioned technical matters, the invention provides that a kind of measuring accuracy is high, the length measurement device based on Hall element of long service life.
The present invention solves the problems of the technologies described above adopted technical scheme: based on the length measurement device of Hall element, comprise the reel be arranged in housing, reel is wound with rope, described reel is fixedly mounted on one end of a rotating shaft, this rotating shaft other end end face is fixedly installed a magnet, and this magnet is provided with a linear transducer; By pulling the cable tie moving magnet on reel to rotate, the magnetic field that described linear transducer induction rotary magnet produces, and induced signal is passed to a processor, the length that this processor pulls according to changes of magnetic field calculating rope.
As preferably, described housing is hollow columnar, and this housing is separated into upper and lower chamber by a dividing plate, and described reel is positioned at cavity of resorption, and described rotating shaft is arranged on dividing plate by bearing, and the other end described in rotating shaft stretches into epicoele through dividing plate.
As preferably, a support is installed in described epicoele, described linear transducer fixed by this support.
As preferably, described support comprises two sway braces being fixed on the bearing on dividing plate and being arranged on this bearing, the other end described in rotating shaft stretches out this bearing, the length of described sway brace is greater than the extension elongation that the other end described in rotating shaft stretches out this bearing, and described linear transducer is connected across on this two sway brace.
As preferably, described linear transducer comprises a shell, arranges circuit board in the enclosure, integrated Hall circuit on the board and the Hall chip that is arranged on shell, the magnetic field that described Hall chip induction rotary magnet produces, described Hall circuit detects the changes of magnetic field of described chip, and delta data is delivered to described processor.
As preferably, described magnet is positioned at immediately below Hall chip.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention adopts touchless sensor measurement data, can prevent measuring equipment from occurring wearing and tearing, improve serviceable life and reliability.
2, the present invention also can use detection of power loss and continuous data to store, and removes the reducing gear on existing product, reduces the data error that the tolerance because of reducing gear is brought, and reducing gear use in the larger error brought of wearing and tearing.
3, the mode of magnetic field induction is adopted to measure length, instead of electric signal, can the effective data error brought such as insulating power supply voltge surge, electrical Interference; Field signal is also not easy to disturb by external factor such as temperature, pressure, humidity simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Schematic diagram when Fig. 2 is linear measure longimetry of the present invention.
Embodiment
The length measurement device that the present invention is based on Hall element is introduced in detail below in conjunction with Fig. 1, Fig. 2, it comprises the reel 2 be arranged in housing 1, reel is wound with rope 3, described reel is fixedly mounted on one end of a rotating shaft 4, this rotating shaft other end end face is fixedly installed a magnet 5, magnet adopts column structure, its radial magnetizing; This magnet is provided with a linear transducer 6; By pulling the cable tie moving magnet on reel to rotate, the magnetic field that described linear transducer induction rotary magnet produces, and induced signal is passed to a processor (not shown), the length that this processor pulls according to changes of magnetic field calculating rope.Specifically, described linear transducer 6 comprises a shell 61, arranges circuit board 62 in the enclosure, integrated Hall circuit on the board and the Hall chip 63 that is arranged on shell, the magnetic field that described Hall chip induction rotary magnet produces, described Hall circuit detects the changes of magnetic field of described chip, and delta data is delivered to described processor; When rope pulls spool turns, magnet follows rotation, becomes rotor, due to Hall chip fixed installation, as stator, material is thus formed relative rotary motion, the changes of magnetic field on Hall circuit induction chip surface, thus calculates angle change; Changed by accumulative angle, can calculate the whole rotational angle of reel, then be converted into reel girth, what just can calculate rope pulls length, i.e. the move distance of rope.
In implementation process, described magnet should be positioned at immediately below Hall chip, and both should keep suitable distance.The present invention adopts touchless sensor measurement data when linear measure longimetry, can prevent measuring equipment from occurring wearing and tearing, improve serviceable life and reliability.And after the product of prior art generally uses 1 ~ 2 year, often there will be the breakpoint and loose contact that cause because of wearing and tearing, breakpoint causes data jump, and loose contact causes data distortion, and product of the present invention does not exist above problem; And the product of prior art in use for some time, there is jumping tooth, slip teeth etc. because of wearing and tearing in the gear of reductor, data also distortion more, has a strong impact on measuring accuracy.
Housing 1 of the present invention is in hollow columnar, and this housing is separated into upper and lower chamber 12,13 by a dividing plate 11, and described reel is positioned at cavity of resorption 13, and described rotating shaft is arranged on dividing plate by bearing 14, and the other end described in rotating shaft stretches into epicoele 12 through dividing plate; One support 7 is installed in epicoele, described linear transducer fixed by this support; Two sway braces 72 being fixed on the bearing 71 on dividing plate and being arranged on this bearing are comprised at support 7 described in implementation process, the other end described in rotating shaft stretches out this bearing, the length of described sway brace is greater than the extension elongation that the other end described in rotating shaft stretches out this bearing, Hall chip and magnet is made to clasp certain distance, form non-contact inductive, described linear transducer is connected across on this two sway brace.This structure is not only simple and practical, and easy for installation, and cost reduces.
The present invention can utilize rope to realize jib measurement of length, its process is such: be first placed in housing by the reel being wound around rope, again housing is arranged on the fixed position of jib, one end of rope is fixed to the top of jib, during boom frame telescopic, rope is and then flexible, thus pull reel to rotate, rotating shaft is along with spool turns, and the magnet be arranged in rotating shaft produces relative rotation with Hall chip, the changes of magnetic field on Hall circuit detection chip surface, thus detect that angle changes, and export corresponding angle-data, these data of processor high speed process, and do accumulative process and analyze, judge spool turns direction and angle, in conjunction with drum diameter and rope diameter, what can converse rope pulls length, thus complete jib measurement of length.
Above-mentioned embodiment is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make various change and modification, therefore all equivalent technical schemes also should belong to category of the present invention.
Claims (6)
1. based on the length measurement device of Hall element, comprise the reel be arranged in housing, reel is wound with rope, it is characterized in that: described reel is fixedly mounted on one end of a rotating shaft, this rotating shaft other end end face is fixedly installed a magnet, and this magnet is provided with a linear transducer; By pulling the cable tie moving magnet on reel to rotate, the magnetic field that described linear transducer induction rotary magnet produces, and induced signal is passed to a processor, the length that this processor pulls according to changes of magnetic field calculating rope.
2. measuring equipment according to claim 1, it is characterized in that: described housing is hollow columnar, this housing is separated into upper and lower chamber by a dividing plate, and described reel is positioned at cavity of resorption, described rotating shaft is arranged on dividing plate by bearing, and the other end described in rotating shaft stretches into epicoele through dividing plate.
3. measuring equipment according to claim 2, is characterized in that: be provided with a support in described epicoele, and described linear transducer fixed by this support.
4. measuring equipment according to claim 3, it is characterized in that: described support comprises two sway braces being fixed on the bearing on dividing plate and being arranged on this bearing, the other end described in rotating shaft stretches out this bearing, the length of described sway brace is greater than the extension elongation that the other end described in rotating shaft stretches out this bearing, and described linear transducer is connected across on this two sway brace.
5. measuring equipment as claimed in any of claims 1 to 4, it is characterized in that: described linear transducer comprises a shell, arranges circuit board in the enclosure, integrated Hall circuit on the board and the Hall chip that is arranged on shell, the magnetic field that described Hall chip induction rotary magnet produces, described Hall circuit detects the changes of magnetic field of described chip, and delta data is delivered to described processor.
6. measuring equipment according to claim 5, is characterized in that: described magnet is positioned at immediately below Hall chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503956.3A CN104236438A (en) | 2014-09-26 | 2014-09-26 | Length measuring device on basis of Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410503956.3A CN104236438A (en) | 2014-09-26 | 2014-09-26 | Length measuring device on basis of Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104236438A true CN104236438A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410503956.3A Pending CN104236438A (en) | 2014-09-26 | 2014-09-26 | Length measuring device on basis of Hall sensor |
Country Status (1)
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| CN (1) | CN104236438A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310927A (en) * | 2015-06-16 | 2017-01-11 | 朱黎 | Offensive odor gas purification treatment system |
| CN109520558A (en) * | 2017-09-20 | 2019-03-26 | 方伟 | Multi-functional inductor |
| CN110441059A (en) * | 2019-08-07 | 2019-11-12 | 东北大学秦皇岛分校 | A kind of bush(ing) bearing abrasion loss on-line measuring device |
| CN111981957A (en) * | 2020-07-29 | 2020-11-24 | 天津大学 | Rope type six-degree-of-freedom measuring device |
| CN112623948A (en) * | 2020-12-25 | 2021-04-09 | 湖南湘瑞智能工控设备有限公司 | Crane and self-adaption method of crane arm length and steel wire rope length |
| CN114322731A (en) * | 2021-12-30 | 2022-04-12 | 徐州重型机械有限公司 | Length and angle sensor of gearless transmission mechanism |
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| JPH0540003A (en) * | 1991-08-06 | 1993-02-19 | Kyowa Electron Instr Co Ltd | Water-proof large-capacity displacement gauge |
| CN2429815Y (en) * | 2000-06-12 | 2001-05-09 | 马宝海 | Magnetic depth detecter for winding drum of winding engine |
| CN201099562Y (en) * | 2007-11-08 | 2008-08-13 | 湖州菁诚纺织品有限公司 | Bobbin winder raw material filament length-measuring and fixed length control device |
| CN201858958U (en) * | 2009-12-18 | 2011-06-08 | 北京泰泽科技开发有限公司 | Stay wire displacement sensor for underwater use |
| CN102620647A (en) * | 2012-03-09 | 2012-08-01 | 北京智博联科技有限公司 | Waterproof type cable lifting device |
| CN103438795A (en) * | 2013-07-29 | 2013-12-11 | 湖南三一智能控制设备有限公司 | Length detection device, length detection method and engineering machine |
| CN203479252U (en) * | 2013-09-29 | 2014-03-12 | 陕西重型汽车有限公司 | Novel automobile body height sensor |
| CN204214394U (en) * | 2014-09-26 | 2015-03-18 | 湖南湘瑞智能工控设备有限公司 | Based on the length measurement device of Hall element |
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2014
- 2014-09-26 CN CN201410503956.3A patent/CN104236438A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0540003A (en) * | 1991-08-06 | 1993-02-19 | Kyowa Electron Instr Co Ltd | Water-proof large-capacity displacement gauge |
| CN2429815Y (en) * | 2000-06-12 | 2001-05-09 | 马宝海 | Magnetic depth detecter for winding drum of winding engine |
| CN201099562Y (en) * | 2007-11-08 | 2008-08-13 | 湖州菁诚纺织品有限公司 | Bobbin winder raw material filament length-measuring and fixed length control device |
| CN201858958U (en) * | 2009-12-18 | 2011-06-08 | 北京泰泽科技开发有限公司 | Stay wire displacement sensor for underwater use |
| CN102620647A (en) * | 2012-03-09 | 2012-08-01 | 北京智博联科技有限公司 | Waterproof type cable lifting device |
| CN103438795A (en) * | 2013-07-29 | 2013-12-11 | 湖南三一智能控制设备有限公司 | Length detection device, length detection method and engineering machine |
| CN203479252U (en) * | 2013-09-29 | 2014-03-12 | 陕西重型汽车有限公司 | Novel automobile body height sensor |
| CN204214394U (en) * | 2014-09-26 | 2015-03-18 | 湖南湘瑞智能工控设备有限公司 | Based on the length measurement device of Hall element |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106310927A (en) * | 2015-06-16 | 2017-01-11 | 朱黎 | Offensive odor gas purification treatment system |
| CN109520558A (en) * | 2017-09-20 | 2019-03-26 | 方伟 | Multi-functional inductor |
| CN110441059A (en) * | 2019-08-07 | 2019-11-12 | 东北大学秦皇岛分校 | A kind of bush(ing) bearing abrasion loss on-line measuring device |
| CN111981957A (en) * | 2020-07-29 | 2020-11-24 | 天津大学 | Rope type six-degree-of-freedom measuring device |
| CN112623948A (en) * | 2020-12-25 | 2021-04-09 | 湖南湘瑞智能工控设备有限公司 | Crane and self-adaption method of crane arm length and steel wire rope length |
| CN114322731A (en) * | 2021-12-30 | 2022-04-12 | 徐州重型机械有限公司 | Length and angle sensor of gearless transmission mechanism |
| CN114322731B (en) * | 2021-12-30 | 2024-03-19 | 徐州重型机械有限公司 | Length angle sensor of gearless transmission mechanism |
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Application publication date: 20141224 |
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| RJ01 | Rejection of invention patent application after publication |