CN103808303A - Spherical surface capacitive type plane level detection sensor - Google Patents
Spherical surface capacitive type plane level detection sensor Download PDFInfo
- Publication number
- CN103808303A CN103808303A CN201410080295.8A CN201410080295A CN103808303A CN 103808303 A CN103808303 A CN 103808303A CN 201410080295 A CN201410080295 A CN 201410080295A CN 103808303 A CN103808303 A CN 103808303A
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- CN
- China
- Prior art keywords
- electric capacity
- sphere
- fixed electorde
- detecting sensor
- over circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C2009/182—Measuring inclination, e.g. by clinometers, by levels by using liquids conductive
Abstract
The invention relates to a spherical surface capacitive type plane level detection sensor. The spherical surface capacitive type plane level detection sensor consists of a plastic spherical surface (1), a fixing electrode A (2), a fixing electrode B (3), a fixing electrode C (4), a liquid-state movable electrode (5) and a base (6), wherein the plastic spherical surface (1) is a hollow spherical surface and is internally provided with a half capacity of conductive liquid to form the liquid-state movable electrode (5); the outer surface of the plastic spherical surface (1) is longitudinally divided into trisection spherical surfaces; each of the one third spherical surfaces is provided with a metal film in a plating manner, so that the three fixing electrodes are formed; the three fixing electrodes are mutually insulated; the three fixing electrodes and the liquid-state movable electrode (5) form three changeable capacitors; when the base is arranged on a horizontal surface, the capacities of the three capacitors are equal; when a plane is inclined, the capacities of the three capacitors are changed, the position of the surface with the enlarged capacity is low, and the position of the surface with the reduced capacity is high, so that the level of the plane can be judged.
Description
Technical field
The present invention relates to sensing, machinery, instrument and manufacturing technology, refer in particular to for the whether horizontal electrolevel of measurement plane.
Background technology
Traditional level meter is air bubble type level meter, and air bubble type level meter mainly relies on the side-play amount in bubble offsetting level centre position to carry out the unevenness in a certain region, measuring workpieces surface.Its defect is: air bubble type level meter is very sensitive to temperature, and along with the rising of temperature, bubble length changes, and the size of bubbler tube inner chamber also changes, and causes apparatus measures error to increase; Secondly, the each workplace of air bubble type level meter will be before use whether carry out the zero-bit of determined level instrument according to the position of bubble accurate, and can only measure the horizontality of limited direction, can not detect the angle of inclination; Moreover whether tested planar horizontal obtains with the departure degree of zero-bit by eyes observation level bubble phase pair, testing result has artificial property.
Summary of the invention
The present invention designs a kind of sphere condenser type planar horizontal detecting sensor, for level meter electronization creates conditions, solves traditional bubble and scale sensitivity, degree of accuracy is low, can not carry out the deficiency that numeral shows.
Solving technical scheme of the present invention is, a kind of sphere condenser type planar horizontal detecting sensor, by plastics sphere (1), fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5) forms; Plastics sphere (1) becomes hollow ball shape, inner sealing the conduction liquid that half capacity is housed form liquid moving electrode (5), plastics sphere (1) outside surface from being longitudinally divided into trisection sphere, each equal portions sphere plates metal film and forms respectively fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), mutually insulated between three fixed electordes, form three variable condenser with liquid moving electrode (5).
Further, described fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5), electric capacity change-over circuit (7) and Single Chip Microcomputer (SCM) system (8) composition planar horizontal pick-up unit, fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5) is connected respectively to electric capacity change-over circuit (7), electric capacity change-over circuit (7) connects Single Chip Microcomputer (SCM) system (8); Single Chip Microcomputer (SCM) system (8) can be processed the electric capacity variable signal of electric capacity change-over circuit (7).
Described fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5), electric capacity change-over circuit (7) and Single Chip Microcomputer (SCM) system (8) composition planar horizontal pick-up unit, fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5) is connected respectively to electric capacity change-over circuit (7), electric capacity change-over circuit (7) connects Single Chip Microcomputer (SCM) system (8).
Further, described electric capacity change-over circuit (7) is two electric capacity digital conversion chips, directly converts the capacity of three variable condenser to electric capacity digital value.
Further, two electric capacity digital conversion chips of described electric capacity change-over circuit (7) are AD1750; Directly convert the capacity of three variable condenser to electric capacity digital value.
Further, described Single Chip Microcomputer (SCM) system (8) comprises single-chip microcomputer STC12LE4052, button and demonstration.
Further, described plastics sphere (1) even thickness, in the time that base is placed on horizontal plane, the capacity of three electric capacity is equal, and in the time that base tilts, three capacitances change, the face position that electric capacity increases is low, and the face position that electric capacity reduces is high, thus Judge plane level.For detection of whether level and measurement plane inclination angle of plane.
The invention has the beneficial effects as follows the ingenious spherical structure design of having utilized, there is volume little, lightweight, highly sensitive, measurement and easy for installation, measurement data can manifest in digitizing.
Accompanying drawing explanation
Fig. 1 is structural representation, and Fig. 2 is vertical view, and Fig. 3 is front view, and Fig. 4 is schematic block circuit diagram.In Fig. 1～Fig. 4,1 is that plastics sphere, 2 is that fixed electorde A, 3 is that fixed electorde B, 4 is that fixed electorde C, 5 is that liquid moving electrode, 6 bases, 7 are that treatment circuit, 8 is Single Chip Microcomputer (SCM) system.
Embodiment
With reference to accompanying drawing 1-4, more detailed description enforcement of the present invention;
1 one kinds of sphere condenser type planar horizontal detecting sensors of embodiment, by plastics sphere (1), fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5), base (6), electric capacity change-over circuit (7) and Single Chip Microcomputer (SCM) system (8) form; Plastics sphere (1) becomes hollow ball shape, sphere wall thickness is even, inner sealing the conduction liquid that half capacity is housed form liquid moving electrode (5), plastics sphere (1) outside surface is from being longitudinally divided into trisection sphere, every 1/3rd spheres plate metal film and form three fixed electordes and be respectively fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), mutually insulated between three fixed electordes, form three variable capacitances with liquid moving electrode (5); Three variable condenser are connected to electric capacity change-over circuit (7), and treatment circuit is connected to Single Chip Microcomputer (SCM) system (8).Base (6) is for supporting whole sphere electric capacity, and in the time that base is placed on horizontal plane, the capacity of three capacitors equates, in the time that base tilts, three condenser capacities change, and the low face electric capacity in position increases, the high face electric capacity in position reduces, thus Judge plane level.
In embodiment 2 the present embodiment, electric capacity change-over circuit (7) is two chip capacitor digital conversion chip AD7150, directly converts the capacity of three capacitors to digital value, by Single Chip Microcomputer (SCM) system (8) reading result, and in single-chip microcomputer, calculates capacitance.Single-chip microcomputer calculates base (6) place flat inclination by the large I of three capacitances.
In embodiment 3 the present embodiment, Single Chip Microcomputer (SCM) system (8) comprises single-chip microcomputer, reset circuit of SCM, crystal oscillator, button and display, and single-chip microcomputer adopts STC12LE4052, employing+3.3V Power supply.
In embodiment 4 the present embodiment, the overall diameter of plastics sphere (1) is 28mm, and it is 0.5mm that baton round is faced the wall and meditated thick, and in ball, conduction liquid adopts mercury.
A kind of sphere condenser type planar horizontal detecting sensor in embodiment 5 above-described embodiments can be embedded in the middle of surveying instrument, replaces base (6) by fixing pedestal.
Claims (7)
1. a sphere condenser type planar horizontal detecting sensor, is characterized in that by plastics sphere (1), fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5) forms; Plastics sphere (1) becomes hollow ball shape, inner sealing the conduction liquid that half capacity is housed form liquid moving electrode (5), plastics sphere (1) outside surface from being longitudinally divided into trisection sphere, each equal portions sphere plates metal film and forms respectively fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), mutually insulated between three fixed electordes, form three variable condenser with liquid moving electrode (5).
2. sphere condenser type planar horizontal detecting sensor according to claim 1, it is characterized in that, described fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5), electric capacity change-over circuit (7) and Single Chip Microcomputer (SCM) system (8) composition planar horizontal pick-up unit, fixed electorde A(2), fixed electorde B(3), fixed electorde C(4), liquid moving electrode (5) is connected respectively to electric capacity change-over circuit (7), electric capacity change-over circuit (7) connects Single Chip Microcomputer (SCM) system (8); Single Chip Microcomputer (SCM) system (8) can be processed the electric capacity variable signal of electric capacity change-over circuit (7).
3. sphere condenser type planar horizontal detecting sensor according to claim 1, it is characterized in that, described plastics sphere (1) even thickness, in the time that base is placed on horizontal plane, the capacity of three electric capacity equates, in the time that base tilts, three capacitances change, the face position that electric capacity increases is low, and the face position that electric capacity reduces is high, thus Judge plane level.
4. sphere condenser type planar horizontal detecting sensor according to claim 2 is for detection of whether level and measurement plane inclination angle of plane.
5. sphere condenser type planar horizontal detecting sensor according to claim 2, is characterized in that, described electric capacity change-over circuit (7) is two electric capacity digital conversion chips, directly converts the capacity of three variable condenser to electric capacity digital value.
6. sphere condenser type planar horizontal detecting sensor according to claim 5, is characterized in that, two electric capacity digital conversion chips of described electric capacity change-over circuit (7) are AD1750.
7. sphere condenser type planar horizontal detecting sensor according to claim 2, is characterized in that, described Single Chip Microcomputer (SCM) system (8) comprises single-chip microcomputer STC12LE4052, button and demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080295.8A CN103808303A (en) | 2014-03-06 | 2014-03-06 | Spherical surface capacitive type plane level detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410080295.8A CN103808303A (en) | 2014-03-06 | 2014-03-06 | Spherical surface capacitive type plane level detection sensor |
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| Publication Number | Publication Date |
|---|---|
| CN103808303A true CN103808303A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410080295.8A Pending CN103808303A (en) | 2014-03-06 | 2014-03-06 | Spherical surface capacitive type plane level detection sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180901A (en) * | 2015-10-07 | 2015-12-23 | 湖南科技学院 | Spherical capacitive plane level detection sensor |
| CN108240851A (en) * | 2016-12-27 | 2018-07-03 | 本田技研工业株式会社 | Liquid level condition checkout gear and fuel cell system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032110A (en) * | 1978-05-08 | 1980-04-30 | Secretary Industry Brit | Measuring inclination or acceleration |
| CN88104645A (en) * | 1988-08-03 | 1988-12-28 | 北京自动测试技术研究所 | Bubble capacitance type double-coordinate gradient sensor |
| JPH04198810A (en) * | 1990-11-29 | 1992-07-20 | Tech Res & Dev Inst Of Japan Def Agency | Omnidirectional tilt angle sensor |
| US20020073563A1 (en) * | 1999-05-31 | 2002-06-20 | Risaku Toda | Inclinometer |
| CN1370268A (en) * | 1999-08-12 | 2002-09-18 | 精工电子有限公司 | Attitude detecting device |
-
2014
- 2014-03-06 CN CN201410080295.8A patent/CN103808303A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2032110A (en) * | 1978-05-08 | 1980-04-30 | Secretary Industry Brit | Measuring inclination or acceleration |
| CN88104645A (en) * | 1988-08-03 | 1988-12-28 | 北京自动测试技术研究所 | Bubble capacitance type double-coordinate gradient sensor |
| JPH04198810A (en) * | 1990-11-29 | 1992-07-20 | Tech Res & Dev Inst Of Japan Def Agency | Omnidirectional tilt angle sensor |
| US20020073563A1 (en) * | 1999-05-31 | 2002-06-20 | Risaku Toda | Inclinometer |
| CN1370268A (en) * | 1999-08-12 | 2002-09-18 | 精工电子有限公司 | Attitude detecting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180901A (en) * | 2015-10-07 | 2015-12-23 | 湖南科技学院 | Spherical capacitive plane level detection sensor |
| CN108240851A (en) * | 2016-12-27 | 2018-07-03 | 本田技研工业株式会社 | Liquid level condition checkout gear and fuel cell system |
| CN108240851B (en) * | 2016-12-27 | 2020-03-03 | 本田技研工业株式会社 | Liquid level state detection device and fuel cell system |
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Application publication date: 20140521 |