CN203785818U - Micro-tension piezoresistive ceramic tension sensor - Google Patents
Micro-tension piezoresistive ceramic tension sensor Download PDFInfo
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- CN203785818U CN203785818U CN201420028268.1U CN201420028268U CN203785818U CN 203785818 U CN203785818 U CN 203785818U CN 201420028268 U CN201420028268 U CN 201420028268U CN 203785818 U CN203785818 U CN 203785818U
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- tension
- strip
- elastic body
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Abstract
The utility model discloses a micro-tension piezoresistive ceramic tension sensor. The sensor comprises a sensor frame, a strip-shaped elastomer and a force measuring rod. One end of the strip-shaped elastomer is bonded to a projection structure at one end of the sensor frame, while the other end of the strip-shaped elastomer is bonded to a deviation limit wall at the other end of the sensor frame, so that moment is formed between the two ends of the strip-shaped elastomer. The force measuring rod is arranged on the strip-shaped elastomer at the upper end of the deviation limit wall. The strip-shaped elastomer has a length of 20-35mm, and a width of 4-6mm. According to the utility model, the micro-tension piezoresistive ceramic tension sensor with the above dimension and structure has excellent linear precision, and, particularly, the hysteresis and repeatability are far lower than the linear precision, so that the actual measured data of the linear precision of the micro-tension sensor can be directly used for the evaluation of the comprehensive precision of the sensor.
Description
Technical field
The utility model relates to a kind of micro-tension sensor, specifically refers to the ceramic tension pick-up of a kind of micro-range (≤0.5CN), is applied to industrial automation control system.
Background technology
Work industry and is batched mechanical high speed and intellectuality from movingization control Sui processed, as the reel systems such as textile industry chemical fibre, silk, velvet apple change along with plant tray licks diameter in journey, the tension force of coiled material also changes, if be not or not dynamic tension control effectively to the reel tension force running up, surface just there will be fold, became uneven phenomenon; As for material uncoiling or upper volumes such as paper, film, rubber, optical fiber, if do not controlled coiling dynamic tension, there will be equally bending, variation in thickness and even fracture.
The core control part of tension controller is tension pick-up.It is directly by coiling the dynamic tension signal linearity running up, to convert electric signal to, then is controlled and coiled motor speed and tension force by MCU or PLC, thereby realize dynamic tension, controls.
At present, both at home and abroad tension pick-up divides contact and contactless two kinds.Contact tension pick-up refers to that the dynamometer link direct-detection of sensor coils carrier tension force, thereby the high reaction sensitivity of accuracy of detection is high, and it is to coil system main flow dynamic tension sensor both at home and abroad at present.Sensors with auxiliary electrode were has two kinds of strain chip and piezoelectric ceramic types; Non-contact tension sensor has Hall element, and in fact it is to detect to coil carrier linear velocity and convert tension signal to again, and the low and anti-interference ability of control accuracy is low is its fatal shortcoming.Yet there is production in the at present external Jin You minority of contact tension pick-up producer, because external this contact tension pick-up itself is not with temperature compensation, has working temperature bad adaptability shortcoming.And fancy price makes domestic industry robotization batch machinery to only have and adopt contactless Hall element to substitute.
Although contact tension pick-up has superiority in signal sampling mode, also exist very large defect.As strain chip tension pick-up, it must adhere to foil gauge on stainless steel or polyester film sheet with organic binder bond, sensors with auxiliary electrode were hysteresis is poor, and owing to boning with monolithic foil gauge, output sensitivity temperature low and foil gauge is waftd greatly, can not be for the highly reliable machinery that batches of high precision; And piezoelectric ceramic type tension pick-up is owing to being non-Linear voltage output, thereby at home and abroad there is no at present practical application.
Recent year You Duojia universities and colleges and scientific research institutions are repeatedly inquired into the development of China's tension pick-up and we as Northwestern Polytechnical University, Southern Yangtze University, science and technology group of China Electronics and Zhong Heng group, unanimously think must Development of Novel Minimal Tension pressure resistance type pottery tension pick-up, to change, to batch at present mechanical automation passive situation imperative.
The utility model is the Minimal Tension pressure resistance type pottery tension pick-up of researching and developing on the method for preparing ceramic composite elastomer of analysis comparison contact tension pick-up and patent ZL201120553280.0 〞 high-performance ceramic tension sensor 〝 and utility model patent ZL201010208526.0 〞 pressure transducer and raw material blending device 〝 basis.The utility model has adopted three grades of temperature compensation technology leading in the world and high precision Hybrid technology; greatly leading external tension pick-up in performance index; can accomplish scale production, cost has powerful advantages more abroad, is the renewal product of domestic and international micro-tension sensor.
Utility model content
The utility model object is that the defect existing for prior art provides a kind of Minimal Tension pressure resistance type pottery tension pick-up.
The utility model for achieving the above object, adopts following technical scheme: a kind of Minimal Tension pressure resistance type pottery tension pick-up, comprises sensor stand, strip elastic body and dynamometer link; The elastomeric one end of described strip is bonded on one end bulge-structure of described sensor stand, and its other end is bonded in the other end of described sensor stand and limits on inclined to one side wall, so that these strip elastic body two ends form moment; Described dynamometer link is arranged on the strip elastic body of described limit Pian Qiang upper end; Wherein, the elastomeric length of described strip is 20-35mm, and width is 4-6mm.
Further, between described sensor stand and strip elastic body, be formed with upper and lower displacement space, described upper and lower displacement is provided with the protection piece that prevents strip elastic body over-travel and rupture in space.
Further, the left and right sides of described dynamometer link is provided with filar guide.
Further, described strip elastic body is composite ceramics elastic body.
Further, described composite ceramics elastic body is comprised of micron-sized zirconium dioxide and micron-sized alundum (Al2O3); Wherein, the mass ratio of described zirconium dioxide and alundum (Al2O3) is 1:0.25～7.5.
Further, the elastomeric tow sides of described strip respectively arrange two bridge resistance,s, by four through holes, form a resistance bridge by bridge resistance, is interconnected, and two bridge balancing resistance corresponding with the bridge resistance, of reverse side are set in the elastomeric front of strip, and by laser trimming system, resistance bridge is adjusted to zero-bit.
Further, on described strip elastic body, be also provided with for overcoming the positive temperature of PTC of temperature drift and mend
Repay resistance and NTC negative temperature compensating resistance.
The beneficial effects of the utility model:
1. the utility model adopts the Minimal Tension pressure resistance type pottery tension pick-up of above-mentioned dimensional structure to have excellent linear precision, especially hysteresis and repeatability are far below linear precision, and the linear precision measured data of reflection micro-tension sensor is the synthesis precision of energy evaluation sensor just.
2. guaranteeing under the linear precision prerequisite of sensor excellence, the utility model adopt Qiao road output form have high output sensitivity (2.2-3.3mV/V) this to be other form tension pick-ups can not compare as strain chip tension pick-up.
3. owing to adopting composite ceramics elastic body, improved elastic body strain modulus, not only improved output sensitivity, and improved dynamic tension response speed and improved reliability.
4. three grades of temperature compensation technology have guaranteed that sensor has wide operating temperature range.
The inside and outside other forms of micro-tension sensor of 5.Neng subrogate country, for country saves a large amount of foreign exchanges, has higher economic benefit.
Accompanying drawing explanation
Fig. 1 one-piece construction schematic diagram of the present utility model.
The elastomeric domain structure schematic diagram of Fig. 2 strip of the present utility model.
Fig. 3 is range ability internal linear curve synoptic diagram of the present utility model.
Embodiment
Shown in Fig. 1, for a kind of Minimal Tension pressure resistance type pottery tension pick-up, comprise sensor stand 3, strip elastic body 1 and dynamometer link 2; One end of described strip elastic body 1 is bonded on one end bulge-structure 32 of described sensor stand 3, and its other end is bonded in the other end of described sensor stand 3 and limits on inclined to one side wall 31, so that these strip elastic body 1 two ends form moment; Described dynamometer link 2 is arranged on the strip elastic body 1 of the inclined to one side wall of described limit 31 upper ends.Wherein, the physical dimension due to strip elastic body 1 directly determines that tension force range of the present utility model is in Minimal Tension state; Therefore, the length of described strip elastic body 1 of the present utility model is set to 20-35mm, and width is set to 4-6mm, and thickness can be determined according to range ability.
Wherein, between described sensor stand 3 and strip elastic body 1, be formed with upper and lower displacement space 13, move down to state on position and in space 13, be provided with the protection piece 4 that prevents strip elastic body 1 over-travel and rupture.When tension force full scale, strip elastic body 1 displacement maximum amplitude is can be controlled within the scope of 0.5-0.8mm like this.
In addition, for guaranteeing that the carrier of high-speed motion reliably contacts with dynamometer link, is provided with filar guide in the left and right sides of described dynamometer link 2.
Wherein, for improving transducer sensitivity and overload characteristics (Over Load), described strip elastic body 1 adopts composite ceramics elastic body.Wherein, described composite ceramics elastic body is comprised of micron-sized zirconium dioxide and micron-sized alundum (Al2O3).Wherein, the mass ratio of described zirconium dioxide and alundum (Al2O3) is 1:0.25～7.5.Owing to adopting composite ceramics elastic body, further improved elastic body strain modulus; Not only improve output sensitivity, and improved dynamic tension response speed and improved reliability.
Fig. 2 is the elastomeric domain structure schematic diagram of strip of the present utility model.Known in figure, the tow sides of strip elastic body 1 respectively arrange two bridge resistance,s 22, by four through holes, form a resistance bridge by bridge resistance, 22 is interconnected, and two bridge balancing resistance 23 corresponding with the bridge resistance, 22 of reverse side are set in the front of strip elastic body 1, and by laser trimming system, resistance bridge is adjusted to zero-bit (0-0.5mV).
In addition, on described strip elastic body 1, be also provided with for overcoming the positive thermo-compensator 24 of PTC and the NTC negative temperature compensating resistance 25 of temperature drift.The design concept of three grades of temperature compensation technology is: at the positive thermo-compensator 24 of PTC, design three resistance that resistance value is different with on NTC negative temperature compensating resistance 25 respectively, in temperature, waft test board to sensor detection 0 ℃ and 45 ℃ of output voltage drift amounts, by the end conduction band on laser trimming system surface trimming compensating resistance, realize temperature compensation resistance and confirm.
Minimal Tension pressure resistance type pottery tension pick-up of the present utility model has excellent linear precision, and especially hysteresis and repeatability, far below linear precision, just can reflect the synthesis precision of sensor for the linear precision measured data of evaluating micro-tension sensor.Fig. 3 is range ability internal linear curve, and table 1 is this patent linear precision measured data.
| Newton | 0 | 0.01 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 |
| mV | 0.59 | 2.41 | 22.5 | 44.7 | 65.05 | 84.53 | 105.4 |
Table 1
After tested, micro-tension sensor basic mechanical design feature is as table 2.
Table 2
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. a Minimal Tension pressure resistance type pottery tension pick-up, is characterized in that, comprises sensor stand, strip elastic body and dynamometer link; The elastomeric one end of described strip is bonded on one end bulge-structure of described sensor stand, and its other end is bonded in the other end of described sensor stand and limits on inclined to one side wall, so that these strip elastic body two ends form moment; Described dynamometer link is arranged on the strip elastic body of described limit Pian Qiang upper end; Wherein, the elastomeric length of described strip is 20-35mm, and width is 4-6mm.
2. a kind of Minimal Tension pressure resistance type pottery tension pick-up as claimed in claim 1; it is characterized in that; between described sensor stand and strip elastic body, be formed with upper and lower displacement space, described upper and lower displacement is provided with the protection piece that prevents strip elastic body over-travel and rupture in space.
3. a kind of Minimal Tension pressure resistance type pottery tension pick-up as claimed in claim 1, is characterized in that, the left and right sides of described dynamometer link is provided with filar guide.
4. a kind of Minimal Tension pressure resistance type pottery tension pick-up as claimed in claim 1, is characterized in that, described strip elastic body is composite ceramics elastic body.
5. a kind of Minimal Tension pressure resistance type pottery tension pick-up as claimed in claim 1, it is characterized in that, the elastomeric tow sides of described strip respectively arrange two bridge resistance,s, by four through holes, form a resistance bridge by bridge resistance, is interconnected, and two bridge balancing resistance corresponding with the bridge resistance, of reverse side are set in the elastomeric front of strip, and by laser trimming system, resistance bridge is adjusted to zero-bit.
6. a kind of Minimal Tension pressure resistance type pottery tension pick-up as claimed in claim 5, is characterized in that, is also provided with for overcoming the positive thermo-compensator of PTC and the NTC negative temperature compensating resistance of temperature drift on described strip elastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028268.1U CN203785818U (en) | 2014-01-17 | 2014-01-17 | Micro-tension piezoresistive ceramic tension sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028268.1U CN203785818U (en) | 2014-01-17 | 2014-01-17 | Micro-tension piezoresistive ceramic tension sensor |
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| CN203785818U true CN203785818U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420028268.1U Expired - Fee Related CN203785818U (en) | 2014-01-17 | 2014-01-17 | Micro-tension piezoresistive ceramic tension sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792443A (en) * | 2014-01-17 | 2015-07-22 | 徐兴才 | Micro-tension piezoresistive ceramic tension sensor |
-
2014
- 2014-01-17 CN CN201420028268.1U patent/CN203785818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792443A (en) * | 2014-01-17 | 2015-07-22 | 徐兴才 | Micro-tension piezoresistive ceramic tension sensor |
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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: 20140820 Termination date: 20150117 |
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| EXPY | Termination of patent right or utility model |