CN102155903A - Novel capacitive sensor structure - Google Patents
Novel capacitive sensor structure Download PDFInfo
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- CN102155903A CN102155903A CN2011100485831A CN201110048583A CN102155903A CN 102155903 A CN102155903 A CN 102155903A CN 2011100485831 A CN2011100485831 A CN 2011100485831A CN 201110048583 A CN201110048583 A CN 201110048583A CN 102155903 A CN102155903 A CN 102155903A
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- grid
- guide rod
- magnet
- mounting hole
- capacitor
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 45
- 230000000694 effects Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a novel capacitive sensor structure, comprising a guide rod, wherein a sensor mounting hole is arranged on the guide rod; a capacitive sensor is arranged in the sensor mounting hole; the capacitive sensor comprises a movable grid and a fixed grid which are cooperated with each other; a thin magnetic steel is attached on the movable grid; a magnet which slides along the outer wall of the guide rod and corresponds to the thin magnetic steel is arranged on the outer wall of the guide rod; the magnet on the outer wall of the guide rod can drive the movable grid of the capacitive sensor to move up and down; and the capacitive sensor is connected with a signal conversion module. As all the position measuring components of the capacitive sensor are arranged in the sensor mounting hole and are not contacted with an external part, the external interference to the capacitive sensor is eliminated; and the capacitive sensor has a waterproof effect and the like.
Description
Technical field
The present invention relates to a kind of capacitor grid transducer, particularly a kind of capacitor grid transducer structure of waterproof, anti-external disturbance.
Background technology
Existing capacitor grid transducer is a kind of based on the variable area principle of work, the Displacement Measurement that relatively moves by fixed grid and moving grid changes, it is a kind of capacitance digital sensor, capacitor grid transducer and other digital displacement transducer, compare as grating, inductosyn etc., have that volume is little, simple in structure, resolution and accuracy height, measuring speed is fast, power consumption is little, cost is low etc. characteristics, in electronic measurement technique, occupy crucial status.
Present known capacitor grid transducer mainly is to utilize the coupling scheme of electric capacity that mechanical displacement is transformed into electric signal, after this electric signal enters electronic circuit, again through demonstrating the size of mechanical displacement after a series of conversion and the computing.If but there are liquid such as water, cutting fluid at the scene when capacitor grid transducer uses, splash on the circuit, even user's sweat on hand is stained with on the sensor, all might shields the transmission of electric signal, make the capacitor grid transducer cisco unity malfunction, influence the normal use of capacitor grid transducer.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the technical problem to be solved in the present invention provides a kind of simple in structure, position measurement sensor is placed in the guide rod of sealing, can waterproof and the novel capacitor grid transducer of external disturbance.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of novel capacitor grid transducer structure, it comprises a guide rod, described guide rod is provided with a sensor mounting hole, be provided with a capacitor grid transducer in the described sensor mounting hole, described capacitor grid transducer comprises moving grid and the fixed grid that cooperatively interacts, post thin magnet steel on the described moving grid, described guide rod outer wall is provided with can be along the magnet of guide rod outer wall slip, described magnet is corresponding with described thin magnet steel, the moving grid that the magnet of described guide rod outer wall can drive described capacitor grid transducer moves up and down, and described capacitor grid transducer is connected with a signal conversion module.
Preferably, described moving grid is connected with described fixed grid by a draw runner, and described draw runner is fixedlyed connected with described fixed grid, and described moving grid and described draw runner are slidingly connected.
Preferably, described signal conversion module is positioned at described sensor mounting hole.
Further, described signal conversion module is positioned at described fixed grid upper end.
Preferably, also be provided with temperature sensor in the described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
Technique scheme has following beneficial effect: this capacitor grid transducer structure is utilized the attractive force between thin magnet steel on the capacitor grid transducer moving grid in the magnet of guide rod outside and the sensor mounting hole, making the moving grid of capacitor grid transducer follow outside magnet positions changes and changes, relative position between the two remains unchanged, the displacement of moving grid is the displacement of magnet just, this capacitor grid transducer in use like this, only need to drive the relative motion that can realize moving grid and fixed grid of moving of external magnet, and then can measure the displacement of magnet on the guide rod outer wall.Because the interference that position measurement components such as the fixed grid of this capacitor grid transducer, moving grid all in the sensor mounting hole and contact with the outside, so just can be eliminated the outside also has effects such as waterproof simultaneously to the influence of capacitor grid transducer.This capacitor grid transducer can integrate temperature sensor simultaneously, helps parameter is carried out necessary temperature compensation.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, this novel capacitor grid transducer comprises guide rod 1, and guide rod 1 is provided with a sensor mounting hole, is provided with a capacitor grid transducer in the sensor mounting hole, and capacitor grid transducer is connected with a signal conversion module 6.Capacitor grid transducer comprises moving grid 4 and the fixed grid 5 that cooperatively interacts, and posts thin magnet steel on the moving grid 4, and moving grid 4 is connected with fixed grid 5 by draw runner 3, and moving grid 4 is connected with fixed grid 5 by a draw runner 3, and draw runner 3 is fixedlyed connected with fixed grid 5, and moving grid 4 is slidingly connected with draw runner 3.The outer wall of guide rod 1 is provided with magnet 2, and magnet 2 can slide up and down along guide rod 1, and magnet 2 is corresponding with the thin magnet steel on the moving grid 4, and the moving grid 4 that magnet 2 can drive capacitor grid transducer moves up and down.
This capacitor grid transducer structure in use, when testee drove guide rod external magnet 2 and moves, position maintenance between the two was relative constant under the magneticaction of thin magnet steel on magnet 2 and moving grid 4, promptly magnet 2 moves drive moving grid 4 along fixed grid 5 relative motions.The moving so change in displacement that just can determine guide rod external magnet 2 by the output valve of signal conversion module 6.
This capacitor grid transducer structure is utilized the attractive force between thin magnet steel on the capacitor grid transducer moving grid in the magnet of guide rod outside and the sensor mounting hole, making the moving grid of capacitor grid transducer follow outside magnet positions changes and changes, relative position between the two remains unchanged, the displacement of moving grid is the displacement of magnet just, this capacitor grid transducer in use like this, only need to drive the relative motion that can realize moving grid and fixed grid of moving of external magnet, and then can measure the displacement of magnet on the guide rod outer wall.
Because the interference that position measurement components such as the fixed grid of this capacitor grid transducer, moving grid all in the sensor mounting hole and contact with the outside, so just can be eliminated the outside also has effects such as waterproof simultaneously to the influence of capacitor grid transducer.This capacitor grid transducer can integrate temperature sensor simultaneously, helps parameter is carried out necessary temperature compensation.
More than a kind of novel capacitor grid transducer structure that the embodiment of the invention provided is described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; all may change in specific embodiments and applications; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (5)
1. novel capacitor grid transducer structure, its characteristic is: it comprises a guide rod, described guide rod is provided with a sensor mounting hole, be provided with a capacitor grid transducer in the described sensor mounting hole, described capacitor grid transducer comprises moving grid and the fixed grid that cooperatively interacts, post thin magnet steel on the described moving grid, described guide rod outer wall is provided with can be along the magnet of guide rod outer wall slip, described magnet is corresponding with described thin magnet steel, the moving grid that the magnet of described guide rod outer wall can drive described capacitor grid transducer moves up and down, and described capacitor grid transducer is connected with a signal conversion module.
2. novel capacitor grid transducer structure according to claim 1 is characterized in that: described moving grid is connected with described fixed grid by a draw runner, and described draw runner is fixedlyed connected with described fixed grid, and described moving grid and described draw runner are slidingly connected.
3. novel capacitor grid transducer structure according to claim 1 is characterized in that: described signal conversion module is positioned at described sensor mounting hole.
4. novel capacitor grid transducer structure according to claim 3 is characterized in that: described signal conversion module is positioned at described fixed grid upper end.
5. novel capacitor grid transducer structure according to claim 1 is characterized in that: also be provided with temperature sensor in the described sensor mounting hole, described temperature sensor is connected with described signal conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100485831A CN102155903A (en) | 2011-03-01 | 2011-03-01 | Novel capacitive sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100485831A CN102155903A (en) | 2011-03-01 | 2011-03-01 | Novel capacitive sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102155903A true CN102155903A (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100485831A Pending CN102155903A (en) | 2011-03-01 | 2011-03-01 | Novel capacitive sensor structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877755A (en) * | 2016-04-01 | 2016-08-24 | 东南大学 | Digital display type human difficult airway detector with cylindrical swivel structure |
| CN115844408A (en) * | 2022-11-16 | 2023-03-28 | 北京昌平实验室 | Magnetometer positioning device, brain magnetic positioning system and positioning method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341119Y (en) * | 1998-06-11 | 1999-09-29 | 上海量具刃具厂 | Improved grating sensor |
| CN2348350Y (en) * | 1998-06-16 | 1999-11-10 | 上海量具刃具厂 | Capacitive angle senser |
| CN2411464Y (en) * | 2000-04-04 | 2000-12-20 | 时代集团公司 | Micro-displacement measuring device |
| CN2765139Y (en) * | 2004-12-27 | 2006-03-15 | 杨忠义 | Double column digital display height gauge |
| CN201060027Y (en) * | 2007-06-22 | 2008-05-14 | 株洲耀辉光机电研究开发有限公司 | Oil level, oil-water interface measurement mechanism |
| US20110227561A1 (en) * | 2008-12-18 | 2011-09-22 | Vladislav Mednikov | Sensor arrangement and method for determining the position and/or change in position of a measurement object |
-
2011
- 2011-03-01 CN CN2011100485831A patent/CN102155903A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341119Y (en) * | 1998-06-11 | 1999-09-29 | 上海量具刃具厂 | Improved grating sensor |
| CN2348350Y (en) * | 1998-06-16 | 1999-11-10 | 上海量具刃具厂 | Capacitive angle senser |
| CN2411464Y (en) * | 2000-04-04 | 2000-12-20 | 时代集团公司 | Micro-displacement measuring device |
| CN2765139Y (en) * | 2004-12-27 | 2006-03-15 | 杨忠义 | Double column digital display height gauge |
| CN201060027Y (en) * | 2007-06-22 | 2008-05-14 | 株洲耀辉光机电研究开发有限公司 | Oil level, oil-water interface measurement mechanism |
| US20110227561A1 (en) * | 2008-12-18 | 2011-09-22 | Vladislav Mednikov | Sensor arrangement and method for determining the position and/or change in position of a measurement object |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105877755A (en) * | 2016-04-01 | 2016-08-24 | 东南大学 | Digital display type human difficult airway detector with cylindrical swivel structure |
| CN115844408A (en) * | 2022-11-16 | 2023-03-28 | 北京昌平实验室 | Magnetometer positioning device, brain magnetic positioning system and positioning method |
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Application publication date: 20110817 |