CN204007495U - A kind of draw wire displacement sensor - Google Patents
A kind of draw wire displacement sensor Download PDFInfo
- Publication number
- CN204007495U CN204007495U CN201420310809.XU CN201420310809U CN204007495U CN 204007495 U CN204007495 U CN 204007495U CN 201420310809 U CN201420310809 U CN 201420310809U CN 204007495 U CN204007495 U CN 204007495U
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- Prior art keywords
- gear
- wheel hub
- chamber
- ring
- rotating shaft
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Abstract
The utility model discloses a kind of draw wire displacement sensor, the indoor coiling wheel hub that can rotate that is furnished with of wheel hub, is wound with steel strand wires on coiling wheel hub, and the free end of steel strand wires passes wheel hub chamber; On coiling wheel hub, be provided with rotating shaft, one end of rotating shaft penetrates in spring housing and is connected with a clockwork spring, and the other end of rotating shaft penetrates in gear chamber, is connected with the gear set of arranging in gear chamber, on gear set, be provided with a ring-shaped magnet for radial magnetic ring, ring-shaped magnet can rotate with gear set; In measuring chamber, be provided with circuit board, circuit board is being provided with angular transducer with ring-shaped magnet corresponding position, for responding to the rotational angle of ring-shaped magnet, is provided with low-power consumption two-way comparer on circuit board, low-power consumption two-way comparer and angular transducer connection.Stay wire displacement sensor using magnetosensitive sensing chip as sensitive element, ensureing, under the smart prerequisite of measurement, to have improved resolution, sensitivity and the functional reliability of displacement measurement, has realized the output of low-power consumption displacement monitoring signal.
Description
Technical field
The utility model relates to a kind of draw wire displacement sensor.
Background technology
Existing stay wire displacement sensor is general adopts cylindrical potentiometer as sensitive element, in the time measuring displacement, steel strand wires end is fixed on and is measured on object, the steel strand wires other end is fixed on coiling wheel hub, the adjusting rotating shaft of cylindrical potentiometer is coaxially fixing with coiling wheel hub, steel strand wires are wrapped on coiling wheel hub, make steel strand wires keep certain tension force by clockwork spring.In the time of measurement point and sensor generation relative displacement, steel strand wires drive the adjusting rotating shaft of cylindrical potentiometer to rotate, and the change in resistance amount of cylindrical potentiometer has reflected the value of displacement, and the increase-decrease plan of resistance understands the direction of displacement.The shortcoming such as that but potentiometer exists is easy to wear, resolution is low, and due to the adjusting rotating shaft of potentiometer need to coiling wheel hub coaxial rotation, and wheel hub communicates with external environment condition by the outlet of steel strand wires, therefore electrical structure cannot be isolated completely with external environment condition, can cause the damage of potentiometer when external environment condition exists infiltration or humidity when larger, and connected metering circuit is brought to potential safety hazard.
Along with the progressively development of technology, in prior art, also there is a kind of subaqueous stay wire displacement sensor, the structure of this sensor is to install and the co-axially fixed magnet of wheel hub, and in the rotating shaft of mechanical angle sensor, magnet is installed, in the time that bracing wire drives wheel hub to rotate, the mode of closing by magnetic force lotus root, drives the mechanical angle sensor rotation in seal casinghousing.It can realize the isolation of mechanical driving part and circuit part, make in circuit part work and seal casinghousing, but the induced way that magnetic force lotus root is closed makes the high frequency characteristics of sensor poor, and resolution, precision, sensitivity are all lower than potentiometer type stay wire displacement sensor.Owing to being periodic function relation between displacement and angle, in the time of measurement displacement, need to take measurement of an angle frequently and determine displacement, prevent angle sudden change and cause larger error, easily cause measuring inaccurate.
Utility model content
In view of above-mentioned the deficiencies in the prior art, a kind of draw wire displacement sensor that the utility model provides, under the condition of mechanical transmission structure and circuit isolation, improves accuracy of measurement.
For solving the problems of the technologies described above, the utility model scheme comprises:
A kind of draw wire displacement sensor, it comprises housing, wherein, in housing, be furnished with from left to right measuring chamber, gear chamber, wheel hub chamber and spring housing, the indoor coiling wheel hub that can rotate that is furnished with of wheel hub, is wound with steel strand wires on coiling wheel hub, and the free end of steel strand wires passes wheel hub chamber; On coiling wheel hub, be provided with rotating shaft, one end of rotating shaft penetrates in spring housing and is connected with a clockwork spring, and the other end of rotating shaft penetrates in gear chamber, is connected with the gear set of arranging in gear chamber, on gear set, be provided with a ring-shaped magnet for radial magnetic ring, ring-shaped magnet can rotate with gear set; In measuring chamber, be provided with circuit board, circuit board goes out to be provided with angular transducer corresponding with ring-shaped magnet, for responding to the rotational angle of ring-shaped magnet, is provided with low-power consumption two-way comparer on circuit board, low-power consumption two-way comparer and angular transducer connection.
Described draw wire displacement sensor, wherein, gear set comprises that shaft gear, first cogs, second cogs, the first lower gear and the second lower gear, and shaft gear is arranged in rotating shaft, first cogs cogs and is arranged on upper axle with second, and first cogs is meshed with shaft gear; The first lower gear and the second lower gear are arranged on lower shaft, and second cogs is meshed with the first lower gear, and ring-shaped magnet is arranged in the second lower gear on the side of measuring chamber.
Described draw wire displacement sensor, wherein, circuit board is connected with a cable by welding connector.
Described draw wire displacement sensor, wherein, angular transducer is MMA253F, the X+ pin of MMA253F, X-pin, Y+ pin, Y-pin are connected with the corresponding pin of low-power consumption two-way comparer respectively.
Described displacement sensing apparatus, wherein, the rotating shaft perforating position between rotating shaft perforating position and wheel hub chamber and spring housing between wheel hub chamber and gear chamber is provided with bearing.
A kind of bracing wire sensing device that the utility model provides, stay wire displacement sensor using magnetosensitive sensing chip as sensitive element, make its mechanical transmission structure and circuit isolation, circuit part has been operated in hermetic structure, adopt gear set structure to improve the resolution of displacement measurement simultaneously, ensureing, under the smart prerequisite of measurement, to have improved resolution, sensitivity and the functional reliability of displacement measurement, realize the output of low-power consumption displacement monitoring signal.
Brief description of the drawings
Fig. 1 is the cross-sectional view of draw wire displacement sensor in the utility model.
Embodiment
The utility model provides a kind of draw wire displacement sensor, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of draw wire displacement sensor, as shown in Figure 1, it comprises housing 1, wherein, in housing 1, be furnished with from left to right measuring chamber 2, gear chamber 3, wheel hub chamber 4 and spring housing 5, in wheel hub chamber 4, be furnished with the coiling wheel hub 6 that can rotate, on coiling wheel hub 6, be wound with steel strand wires 7, the free end of steel strand wires 7 passes wheel hub chamber 4, thereby can be by pulling freely bringing in of steel strand wires 7 to drive coiling wheel hub 6 to rotate.On coiling wheel hub 6, be provided with rotating shaft 8, one end of rotating shaft 8 penetrates in spring housing 5 and is connected with a clockwork spring 9, the other end of rotating shaft 8 penetrates in gear chamber 3, be connected with the gear set of gear chamber 3 interior layouts, on gear set, be provided with a ring-shaped magnet 10 for radial magnetic ring, ring-shaped magnet 10 can rotate with gear set; In measuring chamber 2, be provided with circuit board 11, circuit board 11 can be fixed in measuring chamber 2 by circuit board support, circuit board 11 goes out to be provided with angular transducer 12 corresponding with ring-shaped magnet 10, for responding to the rotational angle of ring-shaped magnet 10, on circuit board 11, be provided with low-power consumption two-way comparer 13, low-power consumption two-way comparer 13 and angular transducer 12 connections.The data that low-power consumption two-way comparer 13 obtains angular transducer 12 are carried out rough handling, then process transmitting it to data processing centre (DPC), obvious, do not belong to the utility model discuss about data processing, do not repeat them here.
In another preferred embodiment of the present utility model, gear set comprise shaft gear 14, first cog 15, second cog 16, the first lower gear 17 and the second lower gear 18, shaft gear 14 is arranged in rotating shaft 8, first cogs 15 and second cogs and 16 is arranged on axle 19, and first cogs 15 is meshed with shaft gear 14; The first lower gear 17 and the second lower gear 18 are arranged on lower shaft 23, and second cogs 16 is meshed with the first lower gear 17, and ring-shaped magnet 10 is arranged in the second lower gear 18 on the side of measuring chamber 2.
Further, circuit board 11 is connected with a cable 21 by welding connector 20, and cable 21 can adopt the technology type of water-proof cable.By cable 21 and data processing centre (DPC), such as the equipment such as handheld reading meter device, data converter, networking interface are connected.And angular transducer 12 can adopt the technological means of magnetic sensitive angle sensor, such as MMA253F sensor, the X+ pin of MMA253F, X-pin, Y+ pin, Y-pin are connected with the corresponding pin of low-power consumption two-way comparer 13 respectively.
Further, rotating shaft 8 perforating positions between rotating shaft 8 perforating positions and wheel hub chamber 4 and spring housing 5 between wheel hub chamber 4 and gear chamber 3 are provided with bearing 22, and what can make that reel hub 6 rotates is more smooth.
One end of steel strand wires 7 is fixed on coiling wheel hub 6, and one end that clockwork spring 9 is fixed on the rotating shaft 8 in bearing 22 provides certain tension force, makes steel strand wires 7 in tensioned state.The front end gear of gear set is fixedly connected with rotating shaft 8, on the end gear of gear set, the coaxial ring-shaped magnet 10 that diametrical magnetization is installed, above as mechanical transmission structure simultaneously, and steel strand wires 7 are drawn mechanical transmission structure housing 1 by line outlet.Circuit board 11 is fixed on circuit board support, on circuit board 11, be welded with angular transducer 12, be MMA253F and low-power consumption two-way comparer 13, wherein the X+ of MMA253F, X-pin are connected with the positive and negative phase input end of low-power consumption two-way comparer 13Zhong mono-road comparer respectively, and Y+, the Y-pin of MMA253F are connected with the positive and negative phase input end of another road comparer in low-power consumption two-way comparer 13 respectively.The cable of eight cores 21 is welded on circuit board 11, connects respectively X+, X-, Y+, the Y-of MMA253F, and the two paths of signals output pin of low-power consumption two-way comparer 13.In said structure, the ring-shaped magnet 10 of MMA253F and diametrical magnetization is parallel to each other and keep center to aim at.
In the time that bracing wire displacement changes, the steel strand wires 7 thereupon flexible wheel hub 6 that makes to wind the line rotate, drive thus the front end gear of the gear set fixing with rotating shaft 8 to rotate, realize the amplification of rotational angle by gear set, the ring-shaped magnet 10 of the diametrical magnetization of installing on the end gear of final driven gear group rotates, thereby displacement of the lines is converted into the angle variation of magnetic direction.MMA253F measures the parallel magnetic direction angle with self, and carry out signal output, according to the radius of coiling wheel hub 6, the enlargement factor of gear set, and overall rotational angle can calculate displacement, ensureing, under the smart prerequisite of measurement, to have improved resolution, sensitivity and the functional reliability of displacement measurement.If simultaneously, using the output signal of low-power consumption two-way comparer 13 as external interrupt, in conjunction with the output characteristic curve of MMA253F, just can omit AD conversion and calculate this process of angle, the fuzzy judgement of realization to current magnetic field angle position.While being necessary, again by measuring the output signal calculating magnetic field angle of MMA253F, in conjunction with the fuzzy judgement record of above-mentioned magnetic field angle position, can calculate shift value, realize the output of low-power consumption displacement monitoring signal.
Certainly; more than explanation is only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this instructions; that makes is allly equal to alternative, obvious form of distortion, within all dropping on the essential scope of this instructions, ought to be subject to protection of the present utility model.
Claims (5)
1. a draw wire displacement sensor, it comprises housing, it is characterized in that, in housing, be furnished with from left to right measuring chamber, gear chamber, wheel hub chamber and spring housing, the indoor coiling wheel hub that can rotate that is furnished with of wheel hub, is wound with steel strand wires on coiling wheel hub, and the free end of steel strand wires passes wheel hub chamber; On coiling wheel hub, be provided with rotating shaft, one end of rotating shaft penetrates in spring housing and is connected with a clockwork spring, and the other end of rotating shaft penetrates in gear chamber, is connected with the gear set of arranging in gear chamber, on gear set, be provided with a ring-shaped magnet for radial magnetic ring, ring-shaped magnet can rotate with gear set; In measuring chamber, be provided with circuit board, circuit board is being provided with angular transducer with ring-shaped magnet corresponding position, for responding to the rotational angle of ring-shaped magnet, is provided with low-power consumption two-way comparer on circuit board, low-power consumption two-way comparer and angular transducer connection.
2. draw wire displacement sensor according to claim 1, it is characterized in that, gear set comprises that shaft gear, first cogs, second cogs, the first lower gear and the second lower gear, shaft gear is arranged in rotating shaft, first cogs cogs and is arranged on upper axle with second, and first cogs is meshed with shaft gear; The first lower gear and the second lower gear are arranged on lower shaft, and second cogs is meshed with the first lower gear, and ring-shaped magnet is arranged in the second lower gear on the side of measuring chamber.
3. draw wire displacement sensor according to claim 1, is characterized in that, circuit board is connected with a cable by welding connector.
4. draw wire displacement sensor according to claim 1, is characterized in that, angular transducer is MMA253F, and the X+ pin of MMA253F, X-pin, Y+ pin, Y-pin are connected with the corresponding pin of low-power consumption two-way comparer respectively.
5. draw wire displacement sensor according to claim 1, is characterized in that, the rotating shaft perforating position between rotating shaft perforating position and wheel hub chamber and spring housing between wheel hub chamber and gear chamber is provided with bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310809.XU CN204007495U (en) | 2014-06-12 | 2014-06-12 | A kind of draw wire displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310809.XU CN204007495U (en) | 2014-06-12 | 2014-06-12 | A kind of draw wire displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204007495U true CN204007495U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420310809.XU Expired - Fee Related CN204007495U (en) | 2014-06-12 | 2014-06-12 | A kind of draw wire displacement sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204007495U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913818A (en) * | 2015-06-09 | 2015-09-16 | 北京恒锚力科技有限公司 | Deformation anchor rod/ anchor cable monitor, monitoring system and monitoring method |
| CN105021117A (en) * | 2015-06-29 | 2015-11-04 | 柳州蚊敌香业有限公司 | Stay-wire type displacement sensor and measuring system based on the sensor |
| CN105606009A (en) * | 2015-12-09 | 2016-05-25 | 赵红 | Passive equivalent sensor |
| CN105890515A (en) * | 2016-06-29 | 2016-08-24 | 上海思博机械电气有限公司 | Gear transmission type multi-ring non-contact digital potentiometer |
| CN106225658A (en) * | 2016-08-22 | 2016-12-14 | 蚌埠日月仪器研究所有限公司 | Stay-supported type displacement sensor |
| CN108709491A (en) * | 2018-08-14 | 2018-10-26 | 河北稳控科技有限公司 | A kind of contactless structural deformation monitoring device and method |
| CN109141171A (en) * | 2017-06-19 | 2019-01-04 | 宁波中车时代传感技术有限公司 | Displacement of the lines wheel sensor |
| CN109737858A (en) * | 2019-03-20 | 2019-05-10 | 湖南中大时代科技有限公司 | Stay wire displacement sensor and crust breaking cylinder connection structure |
| CN110108199A (en) * | 2019-02-26 | 2019-08-09 | 北京市政路桥股份有限公司 | A kind of multifunctional guy displacement sensor and monitoring method |
| CN111811454A (en) * | 2020-07-03 | 2020-10-23 | 湖南中大检测技术集团有限公司 | Protection structure of stay wire type displacement sensor and construction method thereof |
-
2014
- 2014-06-12 CN CN201420310809.XU patent/CN204007495U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913818A (en) * | 2015-06-09 | 2015-09-16 | 北京恒锚力科技有限公司 | Deformation anchor rod/ anchor cable monitor, monitoring system and monitoring method |
| CN105021117A (en) * | 2015-06-29 | 2015-11-04 | 柳州蚊敌香业有限公司 | Stay-wire type displacement sensor and measuring system based on the sensor |
| CN105606009A (en) * | 2015-12-09 | 2016-05-25 | 赵红 | Passive equivalent sensor |
| CN105890515A (en) * | 2016-06-29 | 2016-08-24 | 上海思博机械电气有限公司 | Gear transmission type multi-ring non-contact digital potentiometer |
| CN106225658A (en) * | 2016-08-22 | 2016-12-14 | 蚌埠日月仪器研究所有限公司 | Stay-supported type displacement sensor |
| CN109141171A (en) * | 2017-06-19 | 2019-01-04 | 宁波中车时代传感技术有限公司 | Displacement of the lines wheel sensor |
| CN108709491A (en) * | 2018-08-14 | 2018-10-26 | 河北稳控科技有限公司 | A kind of contactless structural deformation monitoring device and method |
| CN108709491B (en) * | 2018-08-14 | 2024-03-29 | 河北稳控科技股份有限公司 | Non-contact structure deformation monitoring device and method |
| CN110108199A (en) * | 2019-02-26 | 2019-08-09 | 北京市政路桥股份有限公司 | A kind of multifunctional guy displacement sensor and monitoring method |
| CN109737858A (en) * | 2019-03-20 | 2019-05-10 | 湖南中大时代科技有限公司 | Stay wire displacement sensor and crust breaking cylinder connection structure |
| CN111811454A (en) * | 2020-07-03 | 2020-10-23 | 湖南中大检测技术集团有限公司 | Protection structure of stay wire type displacement sensor and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |