CN2402995Y - Capacitance-grid angular displacement sensor - Google Patents
Capacitance-grid angular displacement sensor Download PDFInfo
- Publication number
- CN2402995Y CN2402995Y CN 99258828 CN99258828U CN2402995Y CN 2402995 Y CN2402995 Y CN 2402995Y CN 99258828 CN99258828 CN 99258828 CN 99258828 U CN99258828 U CN 99258828U CN 2402995 Y CN2402995 Y CN 2402995Y
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- CN
- China
- Prior art keywords
- grid
- pole plate
- plate
- angular displacement
- angle
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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 provides a capacitance grid angular displacement sensor, which is mainly composed of emitting pole plates which are respectively positioned at both surfaces of a main grid which a transmitting plate is used as and keep distance optimum and constant and the receiving pole plate which is used as the split auxiliary grid. The utility model is characterized in that a radial fan-shaped through hole is arranged on the transmitting plate, and radial grid strips which are split according to a group are arranged on the emitting pole plates, are extended and diffused toward the outer side of a coupling area and are connected with the corresponding current conducting holes. A shielding body is surrounded between groups, and included angle between groups is equal to the adjacent included angle of the fan-shaped through hole or integer time of the angle. The included angle between the shielding body and the grid strip is equal to the adjacent included angle of two grid strips. The sensor can be universal for various digital display measuring tools and digital display measuring apparatuses which have medium and a little higher accuracy and are used for measuring angular displacement.
Description
The utility model relates to sensor, a kind of appearance gating angular displacement sensor that is used for digital display appliance of more specifically saying so.
Now, capacitor grid transducer has been widely used on the Electronic-digital Readout Measuring Tool, such as digimatic calipers, electronic digital display table, electronic microcalliper or the like.The so-called grid sensing of holding is meant with the capacitive coupling that forms between the two-plate and transmits signal, again because the emission pole plate is the grizzly bar shape, so be called capacitor grid transducer.Its principle of work is: gather displacement signal by major and minor grid relative motion, after sensor is converted to corresponding electric signal, sends into treatment circuit and carry out data processing and export digital signal, thereby obtain measurement result.Traditional appearance gating angular displacement sensor is reflective structure, be the emitter grizzly bar and receive that (with the centre point is the center on the plane that pole plate is produced on same circular substrate, the radial grizzly bar that is covered with of cylindrical, interior circle cloth reception pole plate) makes secondary grid, and the grizzly bar of emitter is to arrange continuously, the reflection pole plate then is produced on another circular substrate makes main grid, two substrates are installed relatively, drive signal is sent from grizzly bar, receive pole plate through the reflecting plate bounce back, change main, the angular travel distance of secondary grid, electric capacity is followed respective change, electric parameter also produces respective change thereupon, thereby realizes angle displacement measurement.But, because the sensitivity of sensor is very high, require the distance between the non-contacting major and minor grid must be limited in the best numerical range, and in moving process, keep constant, otherwise, additive error will be produced, this is difficult to accomplish on manufacturing process, so the sensor measurement error of this structure is bigger, only is suitable for less demanding low precision measure and uses.In addition, the continuous arrangement of emission grizzly bar, the pitch between each grizzly bar can't be done too smallly, because each grizzly bar must be connected with one road drive signal line, pitch is crossed the young pathbreaker makes the wiring connection that difficulty take place, and the big overall volume of pitch is also big, so also there is the defective that volume is big, use inconvenience in it.
The purpose of this utility model provides a kind of appearance gating angular displacement sensor, and it can reduce measuring error, improves precision, dwindles the volume of sensor.
In order to achieve the above object, the utility model has been taked following technical solution: this appearance gating angular displacement sensor comprises main grid and secondary grid, it is characterized in that: major and minor grid all are discoidal; Main grid is made of transmittance plate, and it is a conductive foil, is that the center has a rule rule with the centre point on it, equally distributed radial fan-shaped pylone; Secondary grid are made of emission pole plate and reception pole plate, and they place the two sides of main grid respectively, and the surface of emission is relative with receiving plane to be installed; To be coated with on insulator substrate with the centre point is the center to the emission pole plate, by the radial conduction grizzly bar of a rule of component cloth, there is electric conductor to center on shielding between group and the group, each grizzly bar all extends outside coupling regime, and regular diffusion also is connected with corresponding conductive hole; Receive pole plate and also be and on insulator substrate, be coated with and launch the corresponding plate shaped electric conductor receiving plane of pole plate area.
The transmittance plate of main grid also can be to make carrier with specific inductive capacity suitable insulation plate, on the whole the thin slice of coating electric conductors moulding.
The emission pole plate of secondary grid should keep best constant distance with the reception pole plate.
Angle equals the adjacent angle of the fan-shaped pylone on the main grid transmittance plate between the group on the emission pole plate of secondary grid, the perhaps integral multiple of this angle, and the angle a between conduction grizzly bar and the shield equals the adjacent angle β of two grizzly bars.
Compared with prior art, the utility model has the advantages that: 1, measuring accuracy can improve more than 1 times, reaches medium level on the upper side.2, volume-diminished 1/3.3, the emission grizzly bar can adopt fine pith by composition as listed, increases grizzly bar quantity in the circle of fixed diameter, the wiring ease of connection.4, can reduce process equipment accuracy requirement, reduce to generate this, raise labour productivity.5, be common to digital display appliance, the amount instrument of all kinds of measured angular displacements, also can be used for device and product that other need measure or control relative angular displacement.
Fig. 1 is the exploded view of this appearance gating angular displacement sensor.
Fig. 2 is the partial enlarged drawing of emission pole plate 1 among Fig. 1.
Below in conjunction with accompanying drawing the utility model is done to describe in further detail.
In Fig. 1, Fig. 2, the 2nd, transmittance plate, be also referred to as main grid, it is circular, produce rule, equally distributed fan-shaped pylone with conductive foil, perhaps make carrier with specific inductive capacity suitable insulation body thin slice such as glass, plastics etc., coating skim conducting film, produce rule, equally distributed fan-shaped figure also can.The 1st, the emission pole plate, the 3rd, receive pole plate, be collectively referred to as secondary grid, all be circular, because the emission pole plate is what to separate with receiving pole plate, so be called split type secondary grid again, they place the two sides of main grid respectively, and emission pole plate 1 should keep best constant distance with reception pole plate 3.The emission pole plate is generally independent making; Receiving pole plate can make separately, also can directly be produced on the printed circuit board.Separately the method for making is, coating skim conducting film and produce and launch the corresponding electric conductor receiving plane of pole plate area on the insulator substrate of thin slice by designing requirement, and have extension line to be connected with the common port of drive signal.As seen from the figure, emitter 4 on the emission pole plate is grizzly bar shapes, and by composition as listed, article 8, be one group, every is passed through a conductive hole and is connected with one tunnel drive signal, establish the Isolated Shield utmost point 5 ground connection between group, the angle between each group equals the adjacent angle of fan-shaped pylone on the transmittance plate 2 or the integral multiple at this angle, and the angle a between screening electrode 5 and the grizzly bar equals the adjacent angle β of single emitter grizzly bar.Emitter grizzly bar 4 of each group extends outside coupling regime, regularly the diffusion and the (see figure 2) that is connected with corresponding conductive hole 6.
Claims (4)
1, a kind of appearance gating angular displacement sensor, it comprises main grid and secondary grid, it is characterized in that: major and minor grid all are discoidal; Main grid is made of transmittance plate, and it is a conductive foil, is that the center has a radial fan-shaped pylone rule rule, equally distributed with the centre point on it; Secondary grid are made of emission pole plate and reception pole plate, and they place the two sides of main grid respectively, and the surface of emission is relative with receiving plane to be installed; To be coated with on insulator substrate with the centre point is the center to the emission pole plate, by the radial conduction grizzly bar of a rule of component cloth, there is electric conductor to center on shielding between group and the group, each grizzly bar all extends outside coupling regime, and regular expansion also is connected with corresponding conductive hole; Receive pole plate and also be and on insulator substrate, be coated with and launch the corresponding plate shaped electric conductor receiving plane of pole plate area.
2. appearance gating angular displacement sensor according to claim 1 is characterized in that: the transmittance plate of main grid also can be to make carrier with specific inductive capacity suitable insulation plate, on the whole the thin slice of coating electric conductors moulding.
3. appearance gating angular displacement sensor according to claim 1 is characterized in that: the emission pole plate of secondary grid should keep best constant distance with the reception pole plate.
4. appearance gating angular displacement sensor according to claim 1 is characterized in that: angle equals the adjacent angle of the fan-shaped pylone on the main grid transmittance plate, the perhaps integral multiple of this angle between the group on the emission pole plate of secondary grid.Angle a between conduction grizzly bar and the shield equals the adjacent angle β of two grizzly bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258828 CN2402995Y (en) | 1999-12-30 | 1999-12-30 | Capacitance-grid angular displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99258828 CN2402995Y (en) | 1999-12-30 | 1999-12-30 | Capacitance-grid angular displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2402995Y true CN2402995Y (en) | 2000-10-25 |
Family
ID=34041298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99258828 Expired - Fee Related CN2402995Y (en) | 1999-12-30 | 1999-12-30 | Capacitance-grid angular displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2402995Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8130003B2 (en) | 2007-01-04 | 2012-03-06 | Sheng Zhong | Capacitive sensor core with flexible hinge and sensor using the same |
| CN103424065A (en) * | 2013-07-29 | 2013-12-04 | 中国原子能科学研究院 | Small distance measuring method |
| CN104913712A (en) * | 2014-03-13 | 2015-09-16 | 深圳市联思精密机器有限公司 | Capacitive displacement transducer |
| 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 |
-
1999
- 1999-12-30 CN CN 99258828 patent/CN2402995Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8130003B2 (en) | 2007-01-04 | 2012-03-06 | Sheng Zhong | Capacitive sensor core with flexible hinge and sensor using the same |
| CN103424065A (en) * | 2013-07-29 | 2013-12-04 | 中国原子能科学研究院 | Small distance measuring method |
| CN104913712A (en) * | 2014-03-13 | 2015-09-16 | 深圳市联思精密机器有限公司 | Capacitive displacement transducer |
| 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 |