CN2348350Y - Capacitive angle senser - Google Patents
Capacitive angle senser Download PDFInfo
- Publication number
- CN2348350Y CN2348350Y CN 98224306 CN98224306U CN2348350Y CN 2348350 Y CN2348350 Y CN 2348350Y CN 98224306 CN98224306 CN 98224306 CN 98224306 U CN98224306 U CN 98224306U CN 2348350 Y CN2348350 Y CN 2348350Y
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- moving grid
- grid
- sheet
- moving
- cylinder
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- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model relates to a capacitive angle sensor, comprising a fixed grating and a movable grating. The fixed grating is a circular disk sheet whose center is provided with an axle hole; the fixed grating is provided with a sending electrode and a receiving electrode; the movable grating comprises a movable grating sheet; the movable grating sheet is also a circular disk sheet whose center is provided with an axle hole; the fixed grating and the movable grating sheet are coaxial; the fixed grating and the movable grating sheet are arranged correspondingly in parallel; the movable grating also comprises a movable grating barrel; the movable grating barrel and the movable grating sheet are arranged in coaxial way by a movable grating barrel seat whose center is provided with the axle hole. The utility model adopts a plane capacitance detecting device which is composed of the fixed grating and the movable grating sheet; then, the movable grating barrel can carry out the output, which can change the plane detecting and output mode of the original sensor; the utility model can bring the convenience for manufacture and use.
Description
The utility model relates to survey sensor, refers to a kind of electric capacity angular transducer particularly.
The mechanical reading formula weight tool (as milscale) that was widely used in the past in the industries such as machinery is low because of its reading accuracy, and function singleness can not meet the needs of.The milscale of band machinery digital display device is not afterwards broken away from the shortcoming of mechanical reading formula weight tool yet, along with development of electronic technology, multi-functional numeral occurred and has shown the electronics measurer.Japan Mitutoyo Mfg. Co., Ltd. discloses a kind of capacitive sensor that numeral shows measurer that is used in Chinese patents (application number 85108657A) file, be called that " electrostatic capacity type encoder " this sensor construction is simple, at the bottom of the power consumption, strong interference immunity, reading be also more accurate.But, this sensor has following weak point: (1) this sensor is a kind of plane capacitance angular sensor, as require to measure accurately, just require wherein emitting electrode, receiving electrode, coupling electrode and output electrode all to need highly parallel mutually and perpendicular to rotation axis, yet, error in the manufacturing is unavoidable, gives design, makes, uses and brought great inconvenience.(2) the moving grid sheet of this device places between the two fixed grid sheets, so when loading and unloading, both must be loaded onto simultaneously or pull down.In addition, have the milscale special chip on lead and the chi frame to link on the fixed grid sheet, must remove in advance wiring again luggage tear open, so the comparatively inconvenience when assembling and maintenance of this device.(3) need certain electric weight because electric quantity signal converts numeral to, also promptly require to have the capacitance sheet of certain area, so this sensor can not be done forr a short time than present.
The purpose of this utility model is the shortcoming that exists at above-mentioned capacitive sensor, proposes a kind of electric capacity angular transducer.
To achieve these goals, the utility model adopts following technical scheme: the electric capacity angular transducer includes fixed grid, moving grid, fixed grid is the disk that the center offers axis hole, fixed grid is provided with sender electrode and receiving electrode, sender electrode is the identical fan-shaped grid bar of area, all is connected to the voltage source extension line on each sender electrode; Moving grid contains the moving grid sheet, the moving grid sheet also offers the circular disc of axis hole for the center, be interval with the earthing pole D1 and the induction electrode D2 that are secter pat on the moving grid sheet, fixed grid is coaxial with the moving grid sheet and become parallel and be oppositely arranged, it is characterized in that: described moving grid also includes a moving grid tube, the moving grid tube offers the moving grid cylinder base and the coaxial setting of moving grid sheet of axis hole by a center, be connected through lead between moving grid sheet and the moving grid tube.
Because the utility model has adopted the plane capacitance that is made of fixed grid and moving grid sheet to detect, then by the mode of moving grid tube output, changed the mode that original sensor plane detects, exports, make that fixed grid and moving grid in original technology will be highly parallel each other and reduce greatly perpendicular to the requirement of same rotation axis, for design, manufacturing and use have brought convenience.
Below in conjunction with drawings and Examples, the utility model is done one at length introduces:
Fig. 1 is the utility model fixed grid structural representation.
Fig. 2 is the utility model moving grid chip architecture synoptic diagram.
Fig. 3 is one of the utility model structural representation.
Fig. 4 is two of the utility model structural representation.
Fig. 5 is three of the utility model structural representation.
Please consult Fig. 1-shown in Figure 3 earlier, the electric capacity angular transducer includes fixed grid 1, moving grid 2, fixed grid 1 offers the circular disc of axis hole 11 for the center, fixed grid is provided with sender electrode a and receiving electrode b (receiving electrode b does not draw among Fig. 1), sender electrode a is the identical fan-shaped grid bar of area, all is connected to the voltage source extension line on each sender electrode a, and four groups of sender electrodes have drawn in Fig. 1, in each group eight sender electrode a1, a2 are arranged ... a8, each group is one-period T.Moving grid 2 contains moving grid sheet 21 and moving grid tube 22, moving grid sheet 21 also offers the circular disc of axis hole 23 for the center, be interval with the earthing pole D1 and the induction electrode D2 that are secter pat on the moving grid sheet 21, four grounded utmost point D1 and four induction electrode D2 have drawn in Fig. 2, a D1 and a D2 are one-period T, identical with the period T on the fixed grid 1, fixed grid 1 and moving grid sheet 21 are coaxial and become parallel and be oppositely arranged.Moving grid tube 22 be installed on the moving grid cylinder base 24 that a center offers axis hole and with the 21 coaxial settings of moving grid sheet, same, moving grid cylinder base 24 also with fixed grid 1 coaxial setting, be connected through lead 28 between moving grid sheet 21 and the moving grid tube 22.Moving grid sheet 21 adheres on the left side of moving grid cylinder base 24, moving grid sheet 21, moving grid cylinder base 24 all can rotate around the central shaft that is worn with moving grid tube 22, as shown in Figure 3, all there is the voltage source extension line to be connected to phase voltage source 3 on each sender electrode a on the fixed grid 1, fixed grid 1 maintains static, moving grid 2 rotates, and moving grid sheet 21 exports signal to moving grid tube 22 through lead 28, and moving grid tube 22 outputs to signal with the signal that induces through extension line 27 and detects parts 4.In addition, on fixed grid 1 and moving grid sheet 21 surfaces opposite to each other, scribble medium coefficient, thereby increased the electric capacity between fixed grid 1 and the moving grid sheet 21, can make sensor do forr a short time like this greater than 1 medium.
Please consult shown in Figure 4 again, moving grid cylinder base 24 also can be designed to a cylinder base that two sections of size diameter are arranged, and moving grid tube 22 also is designed to and moving grid cylinder base 24 corresponding size diameter two cylindrical sections, on one section of the minor diameter of moving grid cylinder base 24, be arranged with a bearing 25, bearing 25 is wringing fit for one section with the minor diameter of moving grid cylinder base 24, be connected to signal extension line 27 on bearing 25, this extension line 27 is just delivered to signal detecting part 4 with the signal of sensor.
Please continue to consult shown in Figure 5, also can be provided with a signal in the outside of moving grid tube 22 and detect cylinder 26, signal detects cylinder 26 and is the concentric setting with moving grid tube 22, moving grid cylinder base 24, signal detects between cylinder 26 and 22 liang of barrels of moving grid tube and leaves a gap, signal detects cylinder 26 and has formed an electric capacity with moving grid tube 22, the signal of moving grid tube 22 is coupled to signal and detects on the cylinder 26, and signal detects and is connected to a signal extension line 27 on the cylinder 26, and this extension line 27 is delivered to signal with signal and detected parts 4.Need to prove that it is to be fixed on the housing that signal detects cylinder 26.Because it is constant that the moving grid tube 22 and the signal that assemble detect the relative position of cylinder 26, even two exist eccentric, but the self capacity between two is constant, so to need not the requirement of concentricity between two, the signal that detects is not influenced by the off-centre between two, avoid the high request wanting vertical axis and be parallel to each other between the fixed grid of original sensor and the moving grid, not only reduced and made and the requirement of assembling, also improved accuracy of detection simultaneously.
Claims (4)
1, a kind of electric capacity angular transducer, include fixed grid, moving grid, fixed grid is the disk that the center offers axis hole, and fixed grid is provided with sender electrode and receiving electrode, sender electrode is the identical fan-shaped grid bar of area, all is connected to the voltage source extension line on each sender electrode; Moving grid contains the moving grid sheet, the moving grid sheet also offers the circular disc of axis hole for the center, be interval with the earthing pole D1 and the induction electrode D2 that are secter pat on the moving grid sheet, fixed grid is coaxial with the moving grid sheet and become parallel and be oppositely arranged, it is characterized in that: described moving grid also includes a moving grid tube, the moving grid tube offers the moving grid cylinder base and the coaxial setting of moving grid sheet of axis hole by a center, be connected through lead between moving grid sheet and the moving grid tube.
2, electric capacity angular transducer as claimed in claim 1, it is characterized in that: said moving grid cylinder base can be designed to a cylinder base that two sections of size diameter are arranged, and said moving grid tube also is designed to and corresponding size diameter two cylindrical sections of moving grid cylinder base, on one section of the minor diameter of moving grid cylinder base, be arranged with a bearing, bearing and moving grid cylinder base are wringing fit, are connected to the signal extension line on the bearing.
3, electric capacity angular transducer as claimed in claim 1, it is characterized in that: also can be provided with a signal in the outside of said moving grid tube and detect cylinder, signal detects cylinder and the moving grid tube is a concentric, signal detects between cylinder and moving grid tube two barrels and leaves a gap, signal detects cylinder and the moving grid tube has formed an electric capacity, the signal of moving grid tube is coupled to signal and detects on the cylinder, and signal detects and is connected to a signal extension line on the cylinder.
4, as claim 1 or 2 or 3 described electric capacity angular transducers, it is characterized in that: on fixed grid and moving grid sheet surfaces opposite to each other, scribble medium coefficient greater than 1 medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224306 CN2348350Y (en) | 1998-06-16 | 1998-06-16 | Capacitive angle senser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98224306 CN2348350Y (en) | 1998-06-16 | 1998-06-16 | Capacitive angle senser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2348350Y true CN2348350Y (en) | 1999-11-10 |
Family
ID=33975205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98224306 Expired - Fee Related CN2348350Y (en) | 1998-06-16 | 1998-06-16 | Capacitive angle senser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2348350Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008086691A1 (en) * | 2007-01-04 | 2008-07-24 | Zhong, Sheng | A cassette mechanism of flexible hinge capacitance transducer and its application |
| CN102155903A (en) * | 2011-03-01 | 2011-08-17 | 苏州聚元微电子有限公司 | Novel capacitive sensor structure |
| CN106152933A (en) * | 2015-04-09 | 2016-11-23 | 联想(北京)有限公司 | A kind of detection device, method and electronic equipment |
| CN106931873A (en) * | 2015-12-29 | 2017-07-07 | 河北长孚电气设备有限公司 | Capacitive grid numeral display direct-reading index plate |
-
1998
- 1998-06-16 CN CN 98224306 patent/CN2348350Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008086691A1 (en) * | 2007-01-04 | 2008-07-24 | Zhong, Sheng | A cassette mechanism of flexible hinge capacitance transducer and its application |
| US8130003B2 (en) | 2007-01-04 | 2012-03-06 | Sheng Zhong | Capacitive sensor core with flexible hinge and sensor using the same |
| CN102155903A (en) * | 2011-03-01 | 2011-08-17 | 苏州聚元微电子有限公司 | Novel capacitive sensor structure |
| CN106152933A (en) * | 2015-04-09 | 2016-11-23 | 联想(北京)有限公司 | A kind of detection device, method and electronic equipment |
| CN106152933B (en) * | 2015-04-09 | 2019-01-15 | 联想(北京)有限公司 | A kind of detection device, method and electronic equipment |
| CN106931873A (en) * | 2015-12-29 | 2017-07-07 | 河北长孚电气设备有限公司 | Capacitive grid numeral display direct-reading index plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |