CN101509755A - Big displacement signal sensor - Google Patents
Big displacement signal sensor Download PDFInfo
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- CN101509755A CN101509755A CNA2009101163645A CN200910116364A CN101509755A CN 101509755 A CN101509755 A CN 101509755A CN A2009101163645 A CNA2009101163645 A CN A2009101163645A CN 200910116364 A CN200910116364 A CN 200910116364A CN 101509755 A CN101509755 A CN 101509755A
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- pulley
- displacement
- wheel
- signal
- outer cover
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Abstract
The invention discloses a large displacement signal transducer, which belongs to a transducer for measuring the large displacement in vertical direction. The transducer comprises a pulley, a pinion, a rack wheel, an outer housing, a bottom plate, and the like. The change of the displacement to be measured is converted to the positive or reverse rotation of the pulley by a silk rope and finally to the change of a rotary potentiometer resistance for measurement by a shaft and the change of the gear speed ratio of the rack wheel and the pinion . An output signal is a simulated signal; and after the signal is converted to a digital signal by an A/D module, the measurement accuracy of the displacement travel of the measured object can reach 1mm. Besides, the signal transducer is simple in structure, low in cost, easy in calibration and steady and reliable in reading, and can satisfy the requirements of an intelligent control system.
Description
Technical field:
The invention belongs to the measurement technical field of measurement and test, be specifically related to a kind of big displacement signal sensor, be applicable to the measurement of vertical displacement, such as water level in water pool, lock position, float-type gas holder height etc.
Background technology:
On the market multiple displacement signal measurement device is arranged now, be divided into large displacement measurement and micro-displacement measurement.For large displacement measurement, general metrological grating or the magnetic grid of adopting, measuring distance is generally 0.001～10m, measuring accuracy height, reaction are soon, but the price comparison costliness be easy to be subjected to the interference of external object or electromagnetic field, and equipment is meticulous, be installed in for a long time can cause under the rugged environment measuring and forbidden or the surveying instrument damage, be difficult to satisfy various engine requests.
Summary of the invention:
The object of the present invention is to provide a kind of big displacement signal measurement machine that overcomes above-mentioned defective, higher measuring accuracy can be provided, the scope of application is wider, and simple in structure, and cost is low, and is not fragile.
The technical solution used in the present invention:
Big displacement signal sensor comprises base, outer cover, it is characterized in that: the base upper end is installed with outer cover, and a plurality of interior shelf are arranged in the outer cover on the base; Pulley spindle one end is installed in the outer cover by bearing fixing, and the other end is installed on the interior shelf by bearing fixing, is installed with pulley and pinion wheel on the pulley spindle respectively, and pulley is connected to measured object by the silk rope that passes the through hole on the base; The gear shaft two ends on interior shelf, are installed with gear wheel by Bearing Installation on the gear shaft, the turning axle of rotating potentiometer is fixedlyed connected with gear shaft; Described pinion wheel and gear wheel are meshing with each other.
Described big displacement signal sensor is characterized in that described gear wheel is embedded the wheel, described pinion wheel and gear wheel engagement.
Design philosophy of the present invention:
During Displacement Measurement, the silk rope links together measured object and pulley, and the silk rope is wound on the pulley, and testee is rotated synchronously by silk rope band travelling block and vertical displacement when vertical direction is subjected to displacement, and drives pinion wheel by pulley spindle and rotates together; The rotation of pinion gear wheel is done corresponding sports by gear shaft driven rotary formula potentiometer, causes that potentiometer resistance changes.Thereby change the vertical displacement amount into the potentiometer angular displacement, reach by the variation of measuring potentiometer resistance and measure the purpose that vertical displacement changes.
Determining of diameter of pulley and gear ratio:
Diameter of pulley d determines according to the maximum displacement s of testee, selects d:s=1:20, supposes that the testee maximum displacement is 2m, and then diameter of pulley is chosen as 100mm, but diameter of pulley needn't be determined in strict accordance with above-mentioned ratio.
The gear ratio of two large and small gears is by the ratio decision of above-mentioned d and s, and the default pinion wheel number of teeth is g1, and then the number of teeth g2 value of gear wheel should satisfy following relation:
g2≥[s/(πd)+1]*g1
As can be seen, above-mentioned concrete structure is not the unique implementation of the present invention from above-mentioned principle and structure, the size of pulley, and the definite of gear ratio can determine that the formation tandem product is to adapt to different demands according to the big or small stepping of actual vertical displacement amount.
Advantage of the present invention:
Big displacement signal sensor provided by the invention, its output signal is a simulating signal, after measurement module changed into digital signal, the testee displacement can be accurate to 1mm.The present invention is simple in structure, adopts mechanical transmission structure, and is not fragile, and low cost of manufacture can be applicable to that the vertical displacement under most of environment is measured, and such as water level in water pool, lock position, float-type gas holder height etc., can satisfy requirement of automatic control system.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a diameter of pulley empirical design synoptic diagram of the present invention;
Fig. 3 is applied to cooling pond level measuring synoptic diagram for the present invention.
Number in the figure: fixed block 15-cooling pond at the bottom of 1-outer cover, 2-base, 3-interior shelf, 4-pulley, 5-pinion wheel, 6-gear wheel, 7-pulley spindle, 8-gear shaft, 9-bearing, 10-rotating potentiometer, 11-big displacement signal sensor, 12-connecting filament rope, 13-ball float, 14-pond
Embodiment:
Referring to Fig. 1-3:
Fig. 1 is a big displacement signal sensor, comprises base 2, outer cover 1, it is characterized in that: base 2 upper ends are installed with outer cover 1, and a plurality of interior shelf 3 are arranged in the outer cover 1 on the base 2; Pulley spindle 7 one ends are fixedly mounted in the outer cover 1 by bearing 9, the other end is fixedly mounted on the interior shelf 3 by bearing 9, be installed with pulley 4 and pinion wheel 5 on the pulley spindle 7 respectively, pulley 4 is connected to measured object by the silk rope 12 that passes the through hole on the base 2; Gear shaft 8 two ends are installed on the interior shelf 3 by bearing 9, are installed with gear wheel 6 on the gear shaft 8, and the turning axle of rotating potentiometer 10 is fixedlyed connected with gear shaft 8, and the output of rotating potentiometer 10 resistance signals is connected to become send device; Pinion wheel 5 is meshing with each other with gear wheel 6.
Fig. 3 installs cooling pond level measuring synoptic diagram.
When using this sensor to measure, need to select at 2 in advance and demarcate, once demarcate and can use all the life.Calibration process is simple, only needs measurement displayed value and on-the-spot actual displacement contrast are got final product.Through experimental verification, the problems of measurement of the fine solution of the present invention's energy cooling pond height of water level, measuring accuracy reaches a millimeter magnitude.
Claims (2)
1, big displacement signal sensor comprises base, outer cover, it is characterized in that: the base upper end is installed with outer cover, and a plurality of interior shelf are arranged in the outer cover on the base; Pulley spindle one end is installed in the outer cover by bearing fixing, and the other end is installed on the interior shelf by bearing fixing, is installed with pulley and pinion wheel on the pulley spindle respectively, and pulley is connected to measured object by the silk rope that passes the through hole on the base; The gear shaft two ends on interior shelf, are installed with gear wheel by Bearing Installation on the gear shaft, the turning axle of rotating potentiometer is fixedlyed connected with gear shaft; Described pinion wheel and gear wheel are meshing with each other.
2, big displacement signal sensor according to claim 1 is characterized in that described gear wheel is embedded the wheel, described pinion wheel and gear wheel engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101163645A CN101509755A (en) | 2009-03-16 | 2009-03-16 | Big displacement signal sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101163645A CN101509755A (en) | 2009-03-16 | 2009-03-16 | Big displacement signal sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101509755A true CN101509755A (en) | 2009-08-19 |
Family
ID=41002230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101163645A Pending CN101509755A (en) | 2009-03-16 | 2009-03-16 | Big displacement signal sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101509755A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706266A (en) * | 2012-06-07 | 2012-10-03 | 辽宁省电力有限公司本溪供电公司 | Signal detection system based on programmable controller |
| WO2015043506A1 (en) * | 2013-09-26 | 2015-04-02 | 江苏多维科技有限公司 | Multiturn pulley liquid level sensor device |
| EP3076140A4 (en) * | 2013-11-28 | 2017-08-02 | Multidimension Technology Co., Ltd. | Non-contact liquid level sensor |
| CN110953978A (en) * | 2019-12-20 | 2020-04-03 | 四川省林业和草原调查规划院 | Distance sensor |
-
2009
- 2009-03-16 CN CNA2009101163645A patent/CN101509755A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706266A (en) * | 2012-06-07 | 2012-10-03 | 辽宁省电力有限公司本溪供电公司 | Signal detection system based on programmable controller |
| WO2015043506A1 (en) * | 2013-09-26 | 2015-04-02 | 江苏多维科技有限公司 | Multiturn pulley liquid level sensor device |
| US9952085B2 (en) | 2013-09-26 | 2018-04-24 | MultiDimension Technology Co., Ltd. | Multiturn pulley liquid level sensor device |
| EP3076140A4 (en) * | 2013-11-28 | 2017-08-02 | Multidimension Technology Co., Ltd. | Non-contact liquid level sensor |
| CN110953978A (en) * | 2019-12-20 | 2020-04-03 | 四川省林业和草原调查规划院 | Distance sensor |
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Open date: 20090819 |