CN202854160U - Electrostatic sensor array and data integration rotation speed measuring device - Google Patents
Electrostatic sensor array and data integration rotation speed measuring device Download PDFInfo
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- CN202854160U CN202854160U CN 201220473896 CN201220473896U CN202854160U CN 202854160 U CN202854160 U CN 202854160U CN 201220473896 CN201220473896 CN 201220473896 CN 201220473896 U CN201220473896 U CN 201220473896U CN 202854160 U CN202854160 U CN 202854160U
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- measuring device
- electrostatic transducer
- rotation
- speed measuring
- transducer array
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Abstract
The utility model discloses an electrostatic sensor array and data integration rotation speed measuring device belonging to the field of rotation speed measuring equipment. The electrostatic sensor array rotation speed measuring device comprises a set of electrostatic sensors are arranged at edge periphery of a rotary part to be measured with equal distances to form an electrostatic sensor array. The electrostatic sensor array generates a static signal reflecting rotation information of the rotary part through static induction; amplification and filtration of the static signal is carried out by a conditioning unit; the processed signal is sent to a microprocessor system through a signal processing unit; a microprocessor internally carries out multipath correlation analysis, rotation speed calculation and data integration for all static signals, and thereby the rotation speed of the rotary part to be measured is acquired. Compared with the rotation measuring devices employing a simulation method, a stroboscopic method and a counting method in the prior art, the electrostatic sensor array rotation speed measuring device has properties of simple structure and low cost, is not easily influenced by environmental factors, belongs to the non-contact measuring device and has relatively high accuracy.
Description
Technical field
The utility model belongs to the tachometric survey technical scope, particularly the rotation-speed measuring device of a kind of electrostatic transducer array and data fusion.
Background technology
Rotating speed is one of important parameter of reflection slewing operation conditions.The tachometric survey technology is widely used in the trial run and velocity-controlled system of the slewings such as generator in the industrial circle, motor, hydro-extractor, machine tool chief axis.Tachometric survey precision, real-time and reliability are the keys that ensures the normal operation of high-speed rotating equipment, therefore, seeks a kind of accurately and fast, the rotating speed measurement method of economy has important realistic meaning.Along with the progress of science and technology, rotating speed measurement method develops into present video technique measurement rotating speed from contact type measurement, the non-contact measurement in past.But all there is its limitation in every kind of measuring method.For example, mechanical speed instrumentation accuracy of measurement is not high, and measurement range is limited; The photo-electric velocity gauge is subjected to easily electromagnetic interference (EMI) and rotates the impact of disturbing and being vulnerable to rugged surroundings; The magnetic drag trachometer temperature error is large, structurally requires high to the symmetry of the axle of rotary magnetic steel and aluminium dish; Require rotating speed in stable condition when the strobe type velocity gauge is measured, be not suitable for measuring at a high speed.A kind of electrostatic transducer array that the utility model proposes and the rotation-speed measuring device of Data fusion technique, to utilize the relative motion of the media such as tested rotating object and air to produce the electric charge transfer, cause rotating object surface accumulate static charge, and produce induced charge at the electrostatic transducer array.By electrostatic transducer induced charge is amplified, after signal condition, processing, carry out correlation analysis, calculating and data fusion, obtain at last the rotating speed of slewing.The method belongs to non-contact measurement, has avoided mechanical wear, and cost is low, and is applicable to the rugged environment condition.Particularly under relatively high speed conditions, can measure quickly and accurately rotating speed.
The utility model content
The purpose of this utility model is not high for traditional tachometric survey measuring equipment measuring accuracy, and measurement range is limited; Be subjected to easily electromagnetic interference (EMI) and rotate the impact of disturbing and being vulnerable to rugged surroundings; Temperature error is large, the deficiency that is not suitable for measuring at a high speed provides a kind of rotation-speed measuring device based on electrostatic transducer array and data fusion, it is characterized in that, the composition of the rotation-speed measuring device of described electrostatic transducer array and data fusion: electrostatic transducer 1 is evenly distributed on the peripheral electrostatic transducer array that forms in tested rotary part edge, the rotation information of place, induction position rotary part; Each electrostatic transducer 1 surperficial electrode coated insulating material 3 is by electrode insulation material 3 and metal shielding 4 insulation; The output of each electrostatic transducer 1 is connected with signal condition unit 5 by signal wire, and signal condition unit 5 is connected with microprocessor system 7 by signal processing unit 6.
The cross-correlation analysis module that the output of described signal processing unit 6 is connected to microprocessor system 7 connects;
Described microprocessor system 7 comprises cross-correlation analysis module, rotating speed computing module and the data fusion module of series connection;
Described electrostatic transducer is the electrostatic attraction electrode of fine strip shape, and in rotating shaft cross section rotation direction, electrode width depends on the size of tested rotary part and the electrostatic attraction electrode number that adopts, and value is 1-5mm; Rotating shaft axially, electrode length is 10-30mm.
Described electrostatic transducer array is 2 to 8 electrodes according to tested rotary part difference in size, the corresponding adjustment of tachometric survey precision height electrostatic attraction electrode number, and 2 to 8 electrostatic attraction electrodes are enough to full various application occasions.
Described fine strip shape electrostatic attraction electrode is made by stainless steel or copper sheet, and the electrode insulation material is made by Polyvinylchloride, epoxy resin or poly-basic acid amides.
Described metal shielding is become by stainless steel or copper, and with whole electrode screenings, prevents that extraneous factor is to the interference of electrostatic transducer array.
The utility model beneficial effect is: adopted simple in structure, volume is little, lightweight and install to be easy to the electrostatic transducer array to rotary part induction Real-Time Monitoring rotating speed; Electrostatic transducer directly obtains the electrostatic information on rotary part surface, reduces ground unrest to the impact of useful signal by signal condition, processing unit; Secondly, utilize the signal correlation principle to set up the mathematical model of electrostatic signal and rotating speed, by Data fusion technique obtain in real time, reliable rotary part rotating speed.
Description of drawings
Fig. 1 is based on the rotation-speed measuring device structure of the electrostatic transducer array of four electrodes and data fusion and measuring principle synoptic diagram,
Among the figure: 1. electrostatic transducer, 2. tested rotary part, 3. electrode insulation material, 4. metal shielding, 5. signal condition unit, 6. signal processing unit, 7. microprocessor system.
Fig. 2 is the axial synoptic diagram of tested rotary part.
Fig. 3 is six electrode electrostatic transducer array distribution synoptic diagram.
Fig. 4 is eight electrode electrostatic transducer array distribution synoptic diagram.
Embodiment
The utility model provides a kind of rotation-speed measuring device based on electrostatic transducer array and data fusion and method.The present invention is explained as follows below in conjunction with drawings and Examples:
Fig. 1,2 is depicted as based on the rotation-speed measuring device structure of the electrostatic transducer array of four electrodes and data fusion and measuring principle synoptic diagram.Among the figure, the composition of the rotation-speed measuring device of described electrostatic transducer array and data fusion: A, B, C, D place that electrostatic transducer 1 is evenly distributed on periphery, tested rotary part edge form the electrostatic transducer array, to respond to the position (such as the A among Fig. 1, Fig. 2, Fig. 3 and Fig. 4, B, C, D.E, F, G, H) locate the rotation information of rotary part; Each electrostatic transducer 1 surface applies insulating material 3, by insulating material 3 and metal shielding 4 insulation; The output of each electrostatic transducer 1 is connected with signal condition unit 5 by signal wire, and signal condition unit 5 is connected to the cross-correlation analysis module connection of microprocessor system 7 by the output of signal processing unit 6; Wherein, microprocessor system 7 comprises cross-correlation analysis module, rotating speed computing module and the data fusion module of series connection.
Described electrostatic transducer is the electrostatic attraction electrode of fine strip shape, and in rotating shaft cross section rotation direction, electrode width depends on the size of tested rotary part and the electrostatic attraction electrode number that adopts, and value is 1-5mm; Rotating shaft axially, electrode length is 10-30mm.
Described electrostatic transducer array is 2 to 8 electrodes according to tested rotary part difference in size, the corresponding adjustment of tachometric survey precision height electrostatic attraction electrode number, and 2 to 8 electrostatic attraction electrodes are enough to full various application occasions.
Described fine strip shape electrostatic attraction electrode is made by stainless steel or copper sheet, and the electrode insulation part is made by insulating material such as Polyvinylchloride, epoxy resin, poly-basic acid amides.
Described metal shielding is become by stainless steel or copper, and with whole electrode screenings, prevents that extraneous factor is to the interference of electrostatic transducer array.
The tachometric survey principle of the rotation-speed measuring device of electrostatic transducer array and data fusion is to utilize the rotation information of place, electrostatic transducer array induction position rotary part, this rotation information is representing the electrostatic signal of diverse location, electrostatic signal is amplified by signal condition unit 5, after the filtering, send into microprocessor system 7 through signal processing unit 6, by the cross-correlation analysis module, rotating speed computing module and data fusion module carry out the multichannel correlation analysis to electrostatic signal, rotating speed calculates and carries out data and merges, finally obtain the rotating speed of tested rotary part, utilize the interpretation of result of multichannel correlation computations to obtain the sense of rotation forward or backwards of unit under test.
Claims (7)
1. the rotation-speed measuring device of an electrostatic transducer array and data fusion, it is characterized in that, the composition of the rotation-speed measuring device of described electrostatic transducer array and data fusion: electrostatic transducer (1) is evenly distributed on the peripheral electrostatic transducer array that forms in tested rotary part edge, the rotation information of place, induction position rotary part; The surperficial electrode coated insulating material of each electrostatic transducer (1) (3) is by electrode insulation material (3) and metal shielding (4) insulation; The output of each electrostatic transducer (1) is connected with signal condition unit (5) by signal wire, and signal condition unit (5) are connected with microprocessor system (7) by signal processing unit (6).
2. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 1 is characterized in that, the cross-correlation analysis module that the output of described signal processing unit is connected to microprocessor system (7) connects.
3. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 1 and 2 is characterized in that described microprocessor system comprises cross-correlation analysis module, rotating speed computing module and the data fusion module of series connection.
4. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 1, it is characterized in that, described electrostatic transducer is the electrostatic attraction electrode of fine strip shape, in rotating shaft cross section rotation direction, electrode width depends on the size of tested rotary part and the electrostatic attraction electrode number that adopts, and value is 1-5mm; Rotating shaft axially, electrode length is 10-30mm.
5. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 1, it is characterized in that, described electrostatic transducer array is 2 to 8 electrodes according to tested rotary part difference in size, the corresponding adjustment of tachometric survey precision height electrostatic attraction electrode number, and 2 to 8 electrostatic attraction electrodes are enough to full various application occasions.
6. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 4 is characterized in that described fine strip shape electrostatic attraction electrode is made by stainless steel or copper sheet, and the electrode insulation material is made by Polyvinylchloride, epoxy resin or poly-basic acid amides.
7. the rotation-speed measuring device of described electrostatic transducer array and data fusion according to claim 1 is characterized in that, described metal shielding is become by stainless steel or copper, and with whole electrode screenings, prevents that extraneous factor is to the interference of electrostatic transducer array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473896 CN202854160U (en) | 2012-09-17 | 2012-09-17 | Electrostatic sensor array and data integration rotation speed measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473896 CN202854160U (en) | 2012-09-17 | 2012-09-17 | Electrostatic sensor array and data integration rotation speed measuring device |
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| CN202854160U true CN202854160U (en) | 2013-04-03 |
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| CN 201220473896 Expired - Fee Related CN202854160U (en) | 2012-09-17 | 2012-09-17 | Electrostatic sensor array and data integration rotation speed measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854332A (en) * | 2012-09-17 | 2013-01-02 | 华北电力大学 | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion |
| CN105738644A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Rotation speed measurement device |
-
2012
- 2012-09-17 CN CN 201220473896 patent/CN202854160U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854332A (en) * | 2012-09-17 | 2013-01-02 | 华北电力大学 | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion |
| CN102854332B (en) * | 2012-09-17 | 2014-05-21 | 华北电力大学 | Device and method for measuring rotational speed on basis of electrostatic sensor array and data fusion |
| CN105738644A (en) * | 2016-03-01 | 2016-07-06 | 西安交通大学 | Rotation speed measurement device |
| CN105738644B (en) * | 2016-03-01 | 2019-07-19 | 西安交通大学 | A kind of rotation-speed measuring device |
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| 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: 20130403 Termination date: 20210917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |