CN203785622U - Angle sensor based on eddy current effect - Google Patents
Angle sensor based on eddy current effect Download PDFInfo
- Publication number
- CN203785622U CN203785622U CN201420138818.5U CN201420138818U CN203785622U CN 203785622 U CN203785622 U CN 203785622U CN 201420138818 U CN201420138818 U CN 201420138818U CN 203785622 U CN203785622 U CN 203785622U
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- CN
- China
- Prior art keywords
- coil group
- field coil
- eddy current
- current effect
- rotating shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses an angle sensor based on an eddy current effect. The angle sensor comprises a metal ring, a first excitation coil group and a second excitation coil group, wherein the metal ring can be fixed on a rotating shaft, and the first excitation coil group and the second excitation coil group are respectively connected with a hardware circuit. According to the angle sensor based on an eddy current effect of the utility model, contact is not needed, and the angle of the rotating shaft can be measured after the metal ring is fixed on the rotating shaft and the excitation coils are fixed as required. Equipment used by the whole system is simple, and the overall cost is low. The measurement range of the sensor is variable, and position setting and programming can be performed on the initial state of the rotating shaft to complete angle change measurement within the largest range of 360 degrees.
Description
Technical field
The utility model belongs to angular transducer field, is specifically related to a kind of angular transducer based on eddy current effect.
Background technology
According to technical standpoint difference, existing angular transducer mainly contains mechanical type, electric capacity, resistance-type, and hall effect type, the multiple directions such as raster pattern and eddy current effect formula, but mechanical type overall volume is large, precision is low and be contact type measurement; Electric capacity, resistance-type price are higher, the signal processing complexity collecting, and be contact type measurement; Hall effect type to external world electromagnetic environment requirements is high, and sensor bulk is large, it is many to take resource; Raster pattern volume is large, cost is higher, complex structure, be subject to external disturbance.Angular transducer based on eddy current effect has also had certain development in recent years, but also need to carry out angle judgement by physical construction is auxiliary in application, can not realize Non-contact Angle Measurement.
Utility model content
The utility model object is to provide a kind of angular transducer based on eddy current effect, has solved the problem of signal processing circuit complexity, small volume, and cost is lower, and can under the situation not contacting with testee, realize measurement of angle.
The technical scheme that the utility model adopts is, based on the angular transducer of eddy current effect, comprise becket, the first field coil group and the second field coil group that can be fixed in rotating shaft, the first field coil group is connected with hardware circuit respectively with the second field coil group.
Feature of the present utility model is also,
The central angle that the first field coil group wherein and the line of rotating shaft core form with the line of the second field coil group and rotating shaft core is 90 °.
The first field coil group is wherein made up of the first drive coil and the first magnetic test coil, the second field coil group is made up of the second drive coil and the second magnetic test coil, and the first drive coil, the first magnetic test coil and the second drive coil, the second magnetic test coil are symmetrically distributed in the both sides of becket.
Hardware circuit wherein comprises the one-chip computer module, signal generator and the pumping signal processing module that connect successively, pumping signal processing module is connected with one-chip computer module by the first field coil group, primary importance signal processing module, the first true value modular converter on the one hand successively, is connected successively on the other hand by the second field coil group, second place signal processing module, the second true value modular converter with one-chip computer module.
One-chip computer module wherein comprises the signal generator control module, data processing module and the signal acquisition module that connect successively.
On one-chip computer module wherein, be also connected with LED display module.
The beneficial effects of the utility model are: without contacting, after becket is fixed in rotating shaft, and after fixed excitation coil, can countershaft angle measure on request; The equipment that whole system is used is simple, and overall cost is low; This transducer range is variable, can countershaft original state set positions and programming to complete the angle measure of the change within the scope of the highest 360 °.
Brief description of the drawings
Fig. 1 is the structural representation of the angular transducer of the utility model based on eddy current effect;
Fig. 2 is the vertical view that field coil and becket position are shown;
Fig. 3 is mounted in the sensor sectional view in rotating shaft;
Fig. 4 is working sensor process flow diagram;
Fig. 5 is data processing module process flow diagram in Fig. 4;
Fig. 6 is the relation of field coil group output signal amplitude becket corresponding to coil position.
In figure, 1. becket, 2. the first field coil group, 3. the second field coil group, 4. hardware circuit, 5. primary importance signal processing module, 6. pumping signal processing module, 7. signal generator, 8. signal generator control module, 9. data processing module, 10. signal acquisition module, 11.LED display module, 12. first true value modular converters, 13. second true value modular converters, 14. second place signal processing modules, 15. first drive coils, 16. first magnetic test coils, 17. second drive coils, 18. second magnetic test coils.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The structure of the angular transducer of the utility model based on eddy current effect, as shown in Figure 1, comprises becket 1, the first field coil group 2 and the second field coil group 3 and same two groups of hardware circuits 4 that field coil is connected that can be fixed in rotating shaft.The Q-RING of the inner and outer ring center of circle difference of becket 1 and becket 1 central authorities is for fixing in rotating shaft, the position of two groups of field coils is irremovable and disjunct with becket 1, hardware circuit 4, for field coil provides pumping signal, is processed the position signalling of field coil output simultaneously and the signal of two groups of coil outputs is converted to angle value.
The arrangement of field coil as shown in Figure 2, after becket 1 is fixed in rotating shaft, the first field coil group 2 is fixed on sensor, the second field coil group 3 is also fixed on sensor simultaneously, and now the first field coil group 2 is 90 ° with the second field coil group 3 with the central angle that the line of rotating shaft core forms with the line of rotating shaft core.
Be arranged on sensor excitation coil in the rotating shaft arrangement sectional view on becket 1 as shown in Figure 3, the first drive coil 15 and the first magnetic test coil 16 form the first field coil group 2, the second drive coil 17 and the second magnetic test coil 18 form the second field coil group 3, the first drive coils 15, the first magnetic test coil 16 and the second drive coil 17, the second magnetic test coil 18 and are symmetrically distributed in the both sides of becket 1.
Concrete workflow as shown in Figure 4, in rotating shaft, start working after switching on power by installation of sensors.Signal generator control module 8 control signal generators 7 in single-chip microcomputer produce the sinusoidal signal of proper frequency, sinusoidal signal is further processed the second drive coil 17 in rear the first drive coil 15 and the second field coil group 3 offering respectively in the first field coil group 2 by pumping signal processing module 6, and signal is transferred in the first magnetic test coil 16, the second magnetic test coil 18.
The signal that the first magnetic test coil 16 is exported will be transferred in primary importance signal processing module 5 and be further processed, through the first true value modular converter 12, signal after treatment is converted into d. c. voltage signal, is collected in single-chip microcomputer by the signal acquisition module 10 in single-chip microcomputer.The signal that the second magnetic test coil 18 is exported is simultaneously by the same collected single-chip microcomputer of flow process of process.
Two paths of signals is converted into angle value by data processing module 9 in single-chip microcomputer, conversion process as shown in Figure 5, first obtain the two-way position signalling magnitude of voltage A1 having collected, the relation of field coil group output signal amplitude becket corresponding to coil position as shown in Figure 6, utilize look-up table to judge one group of field coil corresponding to A2 between the lane place of becket, then utilize equally look-up table to judge another group field coil corresponding to A3 between the lane place of becket, by the angle value that obtains the corresponding original state of rotating shaft between two lane place.
Last LED display module 11 carries out LED demonstration, has obtained the angle value of the corresponding original state of rotating shaft, and this has been the final step that realizes systemic-function, will carry out LED demonstration with the angle value of the corresponding original state of described rotating shaft.
Claims (6)
1. the angular transducer based on eddy current effect, it is characterized in that, comprise becket (1), the first field coil group (2) and the second field coil group (3) that can be fixed in rotating shaft, the first field coil group (2) is connected with hardware circuit (4) respectively with the second field coil group (3).
2. the angular transducer based on eddy current effect according to claim 1, is characterized in that, the first described field coil group (2) is 90 ° with the second field coil group (3) with the central angle that the line of rotating shaft core forms with the line of rotating shaft core.
3. the angular transducer based on eddy current effect according to claim 1, it is characterized in that, the first described field coil group (2) is made up of the first drive coil (15) and the first magnetic test coil (16), the second field coil group (3) is made up of the second drive coil (17) and the second magnetic test coil (18), and the first drive coil (15), the first magnetic test coil (16) and the second drive coil (17), the second magnetic test coil (18) are symmetrically distributed in the both sides of becket (1).
4. the angular transducer based on eddy current effect according to claim 1, it is characterized in that, described hardware circuit (4) comprises the one-chip computer module connecting successively, signal generator (7) and pumping signal processing module (6), pumping signal processing module (6) is on the one hand successively by the first field coil group (2), primary importance signal processing module (5), the first true value modular converter (12) is connected with one-chip computer module, on the other hand successively by the second field coil group (3), second place signal processing module (14), the second true value modular converter (13) is connected with one-chip computer module.
5. the angular transducer based on eddy current effect according to claim 4, is characterized in that, described one-chip computer module comprises the signal generator control module (8), data processing module (9) and the signal acquisition module (10) that connect successively.
6. the angular transducer based on eddy current effect according to claim 4, is characterized in that, is also connected with LED display module (11) on described one-chip computer module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138818.5U CN203785622U (en) | 2014-03-25 | 2014-03-25 | Angle sensor based on eddy current effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420138818.5U CN203785622U (en) | 2014-03-25 | 2014-03-25 | Angle sensor based on eddy current effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785622U true CN203785622U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420138818.5U Expired - Fee Related CN203785622U (en) | 2014-03-25 | 2014-03-25 | Angle sensor based on eddy current effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203785622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931864A (en) * | 2019-03-19 | 2019-06-25 | 合肥工业大学 | Spherical hinge space three-dimensional angle of revolution measurement method based on eddy current effect |
-
2014
- 2014-03-25 CN CN201420138818.5U patent/CN203785622U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931864A (en) * | 2019-03-19 | 2019-06-25 | 合肥工业大学 | Spherical hinge space three-dimensional angle of revolution measurement method based on eddy current effect |
| CN109931864B (en) * | 2019-03-19 | 2020-08-07 | 合肥工业大学 | Ball hinge space three-dimensional rotation angle measuring method based on eddy current effect |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20170325 |