CN104034308A - Concentric coplanar bisectional annular-bisectional circular nested pole plate inclination angle measuring method and apparatus thereof - Google Patents
Concentric coplanar bisectional annular-bisectional circular nested pole plate inclination angle measuring method and apparatus thereof Download PDFInfo
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- CN104034308A CN104034308A CN201410179253.XA CN201410179253A CN104034308A CN 104034308 A CN104034308 A CN 104034308A CN 201410179253 A CN201410179253 A CN 201410179253A CN 104034308 A CN104034308 A CN 104034308A
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- coplanar
- semicircle
- electric capacity
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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
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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
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
- G01C2009/062—Electric or photoelectric indication or reading means capacitive
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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
- G01C2009/185—Measuring inclination, e.g. by clinometers, by levels by using liquids dielectric
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a concentric coplanar bisection annular-bisectional circular nested pole plate inclination angle measuring method and an apparatus thereof, and belongs to an angle measurement technique. The annular coplanar capacitive measurement head of a sensor unit is composed of two semicircular metal plates and two semi-annular metal plates, the above four metal plates are coplanar and concentric, the two semi-annular metal plates are circumferentially uniformly distributed, and correspond to the two semi-circular metal plates one by one to form a capacitor, the annular coplanar capacitive measurement head is placed on a circular insulating substrate, the circular insulating substrate is used as the bottom surface of a cylinder container, the cylinder container is transversely arranged, an insulating liquid with the volume of 1/2 of the volume of the container is injected into the container in a sealing manner, a potential lead wire takes out the potential of the four metal plates and is connected with the input end of a capacitance measurement unit, and the capacitance measurement unit is connected with an inclination angle calculation unit; and when the container tilts, the position of the annular coplanar capacitance sensor measurement head relative to the insulating liquid changes, and the inclination angle can be solved by measuring the capacitance of the capacitor.
Description
Technical field
The invention belongs to measurement of angle technical field, relate generally to a kind of inclination angle measurement method and device.
Background technology
At present, the method for sensing at known measurement inclination angle is to utilize the surface of liquid under static state to remain the principle of level.Inside has added the container run-off the straight of liquid, and stable rear liquid level keeps level, but variation has occurred the relative position of liquid and container.The electrical quantities variation causing by detecting this process, calculates the angle of container with respect to inner liquid surface, and then measures the pitch angle of container.
The sensing mode at the pitch angle between the liquid surface adding for inspection instrument and its inside, can be divided into resistance-type and the large class of electrostatic capacitive two.
In Jap.P. 2001-13160 communique, having introduced the correlation technique of resistance sensor, is in the canister cylindraceous of one end sealing, to be encapsulated into appropriate conductive liquid, and opening stops up with circular metal plate.Pair of metal electrodes is connected and be fixed on plectane.In the time of container lean, container and inner liquid surface angulation change, thereby the contact area of metal electrode and conductive liquid is changed, and the resistance between canister and each metal electrode is changed.By measuring the variation of its resistance value, just can detect the pitch angle of container.
But metal electrode contacts with the direct of conductive liquid, cause the electrochemical reactions such as the electrolysis of the separating out of the own metal of electrode, conductive liquid, the precision of sensor and stability are difficult to obtain long-term guarantee.
About static capacity type sensor, in Chinese CN1668892A patent, introduce correlation technique.This sensor is exactly the conductive liquid that is encapsulated into 1/2 amount of internal volume in the tubular closed container of electrical isolation system, and container is placed tabular central electrode on interior two parallel sides, and there is silica coverlay on its surface, serves as dielectric.In the time of container lean, container and inner liquid surface angulation change, and the electric capacity between tabular central electrode and conductive liquid is changed.Thereby, the variation of its capacitance is measured, to detect the size at pitch angle of container.
But the in the situation that of this static capacity type sensor, when angle of inclination that tubular closed container occurs is when excessive, the liquid of internal tank is setovered a side and lost and the contacting of another central electrode, now this sensor loses effect.Due to the limitation of principle, its range that can survey pitch angle is always limited, and depends on the physical dimension of internal tank.
Summary of the invention
The present invention is directed to metal electrode and conductive liquid in the sensing mode at above-mentioned existing detection inclination angle directly contact, sensor stability is difficult to the problems such as the finiteness that obtains long-term guarantee, can survey inclination angle range, the present invention proposes and has designed the nested pole plate inclination angle measurement method of concentric coplanar bisection ring-Bisected Circle and device, the insulativity liquid using in this invention has been avoided the electrochemical reactions such as separating out of pole plate, and the coplanar capacitance structure of annular in sensor unit has been realized 360 degree gamuts and measured.
Object of the present invention is achieved through the following technical solutions:
The nested pole plate inclination angle measurement method of a kind of concentric coplanar bisection ring-Bisected Circle, described method step is as follows:
(1), by a circular metal plate and the coplanar concentric placement of outer circle annular metal sheet, and circular metal plate and outer circle annular metal sheet are radially halved, obtain respectively two parts of semicircle sheet metals and two parts of semicircle annular metal sheets, the semicircle sheet metal that described same segment angle is right and semicircle annular metal sheet form electric capacity, and described two parts of semicircle sheet metals and two parts of semicircle annular metal sheet combinations obtain annular coplanar electric capacity gauge head;
(2), coplanar annular electric capacity gauge head is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, and the capacitor's capacity that the semicircle sheet metal that same segment angle is right and semicircle annular metal sheet form is by the specific inductive capacity of the specific inductive capacity of air, insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in the right segment angle of part in insulativity liquid and jointly determine separately;
(3) when, the coplanar electric capacity gauge head of above-mentioned annular carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of the coplanar electric capacity gauge head of annular and insulativity liquid changes, each pole plate exposed in air the right segment angle of part and be immersed in the right segment angle of part in insulativity liquid and change, measure the variation of the capacitor's capacity of the right semicircle sheet metal of above-mentioned same segment angle and the formation of semicircle annular metal sheet, try to achieve inclination angle value.
The nested pole plate dip measuring device of a kind of concentric coplanar bisection ring-Bisected Circle, comprises capacitance measurement unit and inclination angle computing unit, and described capacitance measurement unit is connected with inclination angle computing unit; Described device also comprises sensor unit, the structure of described sensor unit is: the circular insulated substrate of the at one end openend of opening-like cylindrical container sealing assembling is positioned at equipped annular coplanar electric capacity gauge head on the inboard face of round insulation substrate in cylindrical container chamber; The coplanar electric capacity gauge head of described annular is made up of two semicircle sheet metals and two semicircle annular metal sheets, wherein two semicircle annular metal sheets are configured in two semicircle sheet metal outsides, and two semicircle annular metal sheets are coplanar concentric with two semicircle sheet metals, described two semicircle annular metal sheets are uniformly distributed circumferentially and are corresponding one by one with two semicircle sheet metals; Four current potential lead-in wires are connected two semicircle sheet metals, two semicircle annular metal sheets respectively successively with the input end of capacitance measurement unit; Described cylindrical container is horizontal, and in described cylindrical container, the insulativity liquid that accounts for cylindrical container volume 1/2nd is injected in sealing.
The present invention has following characteristics and good result:
(1) compared with resistance-type dip measuring device, be insulativity liquid due to what contact with electrode pad, avoid the electrochemical reactions such as separating out of the metal of pole plate own, stability and reliability that therefore can long term maintenance sensor.
(2) compared with electrostatic capacitive dip measuring device, because horizontal container can be along the rotation of central axis 360 degree, the capacitance of output all the time with pitch angle existence function relation, therefore measurement range is unrestricted, has the advantages that 360 degree gamuts are measured.
(3) due to circular metal plate and all radially bisections of outer circle annular metal sheet, the two parts of semicircle sheet metals and the two parts of semicircle annular metal sheets that obtain are corresponding one by one, make near the electric force lines distribution radially cut-off rule of annular coplanar electric capacity gauge head more even, eliminated by radially cutting apart produced slight error from principle, measurement result is more accurate.
Brief description of the drawings
Fig. 1 is the profile skeleton view of the sensor unit of the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle
Fig. 2 is the principle schematic of annular coplanar electric capacity gauge head in the sensor unit of the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle
Fig. 3 is the front elevation of annular coplanar electric capacity gauge head in the sensor unit of the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle
Fig. 4 is key diagram when annular coplanar electric capacity gauge head tilts in the sensor unit of the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle
Fig. 5 is the one-piece construction schematic diagram of the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle
Piece number explanation in figure: 1 annular coplanar electric capacity gauge head, 2,3 semicircle sheet metals, 4,5 semicircle annular metal sheets, 6 round insulation substrates, 7 cylindrical containers, 8 insulativity liquid, 9,10,11,12 current potential lead-in wires, 13 sensor units, 14 capacitance measurement unit, 15 inclination angle computing units.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
The nested pole plate dip measuring device of a kind of concentric coplanar bisection ring-Bisected Circle, comprises sensor unit 13, capacitance measurement unit 14 and inclination angle computing unit 15, is illustrated in figure 5 the one-piece construction schematic diagram of dip measuring device.
The profile skeleton view of the sensor unit of dip measuring device shown in Fig. 1, the structure of described sensor unit 13 is: the circular insulated substrate 6 of the at one end openend of opening-like cylindrical container 7 sealing assembling is positioned at equipped annular coplanar electric capacity gauge head 1 on the inboard face of round insulation substrate 6 in cylindrical container 7 chambeies; The coplanar electric capacity gauge head 1 of described annular is made up of two semicircle sheet metals 2,3 and two semicircle annular metal sheets 4,5, wherein two semicircle annular metal sheets 4,5 are configured in two semicircle sheet metal 2,3 outsides, and two semicircle annular metal sheets 4,5 are coplanar concentric with two semicircle sheet metals 2,3, described two semicircle annular metal sheets 4,5 are uniformly distributed circumferentially and are corresponding one by one with two semicircle sheet metals 2,3; Four current potentials lead-in wire 9,10,11,12 is connected two semicircle sheet metals 2,3, two semicircle annular metal sheets 4,5 respectively successively with the input end of capacitance measurement unit 14; Described cylindrical container 7 is horizontal, injects in the interior sealing of described cylindrical container 7 the insulativity liquid 8 that accounts for cylindrical container 7 volumes 1/2nd.
Described round insulation substrate 6 is made up of resin glass fiber material.
Described insulativity liquid 8 is the liquid by one or more composition combinations in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diglycol monotertiary butyl ether.
The nested pole plate inclination angle measurement method of a kind of concentric coplanar bisection ring-Bisected Circle, the method step is as follows:
(1) by a circular metal plate and the coplanar concentric placement of outer circle annular metal sheet, and circular metal plate and outer circle annular metal sheet are radially halved, obtain respectively two parts of semicircle sheet metals and two parts of semicircle annular metal sheets, the semicircle sheet metal that described same segment angle is right and semicircle annular metal sheet form electric capacity, and described two parts of semicircle sheet metals and two parts of semicircle annular metal sheet combinations obtain annular coplanar electric capacity gauge head.
With reference to accompanying drawing 2, between the sheet metal of annular coplanar electric capacity gauge head, line of electric force is uniformly distributed along sheet metal, can be similar to the replacement of semicircular arc line.According to the solution formula of single coplanar electric capacity, the coplanar electric capacity of known annular and dielectric specific inductive capacity are proportional, can be represented by the formula.
C＝K·ε
(2) coplanar annular electric capacity gauge head is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, and the capacitor's capacity that the semicircle sheet metal that same segment angle is right and semicircle annular metal sheet form is by the specific inductive capacity of the specific inductive capacity of air, insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in the right segment angle of part in insulativity liquid and jointly determine separately.
Fig. 3 is the front elevation of annular coplanar electric capacity gauge head in the sensor unit of dip measuring device, and the electric capacity that the electric capacity that sheet metal 2,4 forms and sheet metal 3,5 form can represent with following formula respectively.
(3) when the coplanar electric capacity gauge head of above-mentioned annular carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of annular coplanar electric capacity gauge head and insulativity liquid changes, the exposed segment angle that part is right in air of each pole plate and be immersed in insulativity liquid partly right segment angle and change.
Fig. 4 illustrates key diagram when annular coplanar electric capacity gauge head tilts.The electric capacity that the electric capacity that now sheet metal 2,4 forms and sheet metal 3,5 form is respectively:
Two formulas are made difference and can be obtained:
And then the solution formula of trying to achieve pitch angle is:
By capacitance measurement unit and inclination angle computing unit, the signal obtaining is compared to processing, can obtain pitch angle output.
Claims (4)
1. the nested pole plate inclination angle measurement method of concentric coplanar bisection ring-Bisected Circle, is characterized in that: described method step is as follows:
(1), by a circular metal plate and the coplanar concentric placement of outer circle annular metal sheet, and circular metal plate and outer circle annular metal sheet are radially halved, obtain respectively two parts of semicircle sheet metals and two parts of semicircle annular metal sheets, the semicircle sheet metal that described same segment angle is right and semicircle annular metal sheet form electric capacity, and described two parts of semicircle sheet metals and two parts of semicircle annular metal sheet combinations obtain annular coplanar electric capacity gauge head;
(2), coplanar annular electric capacity gauge head is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, and the capacitor's capacity that the semicircle sheet metal that same segment angle is right and semicircle annular metal sheet form is by the specific inductive capacity of the specific inductive capacity of air, insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in the right segment angle of part in insulativity liquid and jointly determine separately;
(3) when, the coplanar electric capacity gauge head of above-mentioned annular carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of the coplanar electric capacity gauge head of annular and insulativity liquid changes, each pole plate exposed in air the right segment angle of part and be immersed in the right segment angle of part in insulativity liquid and change, measure the variation of the capacitor's capacity of the right semicircle sheet metal of above-mentioned same segment angle and the formation of semicircle annular metal sheet, try to achieve inclination angle value.
2. the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle, comprise capacitance measurement unit (14) and inclination angle computing unit (15), described capacitance measurement unit (14) is connected with inclination angle computing unit (15); It is characterized in that: described device also comprises sensor unit (13), the structure of described sensor unit (13) is: the at one end openend of opening-like cylindrical container (7) the sealing circular insulated substrate of assembling (6) is positioned at equipped annular coplanar electric capacity gauge head (1) on the inboard face of round insulation substrate (6) in cylindrical container (7) chamber; The coplanar electric capacity gauge head of described annular (1) is made up of two semicircle sheet metals (2,3) and two semicircle annular metal sheets (4,5), wherein two semicircle annular metal sheets (4,5) are configured in two semicircle sheet metals (2,3) outside, and two semicircle annular metal sheets (4,5) are coplanar concentric with two semicircle sheet metals (2,3), described two semicircle annular metal sheets (4,5) are uniformly distributed circumferentially and are corresponding one by one with two semicircle sheet metals (2,3); Four current potential lead-in wires (9,10,11,12) are connected two semicircle sheet metals (2,3), two semicircle annular metal sheets (4,5) respectively successively with the input end of capacitance measurement unit (14); Described cylindrical container (7) is horizontal, and in described cylindrical container (7), the insulativity liquid (8) that accounts for cylindrical container (7) volume 1/2nd is injected in sealing.
3. the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle according to claim 2, is characterized in that: described round insulation substrate (6) is made up of resin glass fiber material.
4. the nested pole plate dip measuring device of concentric coplanar bisection ring-Bisected Circle according to claim 2, is characterized in that: described insulativity liquid (8) is the liquid by one or more composition combinations in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diglycol monotertiary butyl ether.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179253.XA CN104034308B (en) | 2014-04-28 | 2014-04-28 | Concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method and device |
| PCT/CN2015/075460 WO2015165316A1 (en) | 2014-04-28 | 2015-03-31 | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| US15/307,300 US10145683B2 (en) | 2014-04-28 | 2015-03-31 | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
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| CN201410179253.XA CN104034308B (en) | 2014-04-28 | 2014-04-28 | Concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method and device |
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| Publication Number | Publication Date |
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| CN104034308A true CN104034308A (en) | 2014-09-10 |
| CN104034308B CN104034308B (en) | 2016-07-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165316A1 (en) * | 2014-04-28 | 2015-11-05 | 哈尔滨工业大学 | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| CN105450951A (en) * | 2014-09-30 | 2016-03-30 | 深圳Tcl新技术有限公司 | Television and capacitance level meter |
| CN108303077A (en) * | 2018-01-19 | 2018-07-20 | 云南靖创液态金属热控技术研发有限公司 | attitude detecting sensor |
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| US4866850A (en) * | 1987-01-23 | 1989-09-19 | Kelly Vincent M | Clinometer with rolling liquid conductor |
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| JP2001241948A (en) * | 2000-03-01 | 2001-09-07 | Tohoku Techno Arch Co Ltd | Capacitance-type inclination angle sensor |
| US6516527B1 (en) * | 2000-11-03 | 2003-02-11 | Hiro Moriyasu | Inclinometer |
| CN201497503U (en) * | 2009-09-02 | 2010-06-02 | 青岛前哨精密仪器有限公司 | High-precision small-angle sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528760A (en) * | 1980-02-28 | 1985-07-16 | Pa Consulting Services Limited | Clinometer |
| US4672753A (en) * | 1986-05-19 | 1987-06-16 | Gas Research Institute | Rotation sensor |
| US4866850A (en) * | 1987-01-23 | 1989-09-19 | Kelly Vincent M | Clinometer with rolling liquid conductor |
| EP0464145B1 (en) * | 1989-03-21 | 1996-07-17 | Zircon International, Inc. | Electronic capacitive level with automatic electrode selection |
| US5802728A (en) * | 1995-08-17 | 1998-09-08 | Watson Industries, Inc. | Liquid level and angle detector |
| JP2001241948A (en) * | 2000-03-01 | 2001-09-07 | Tohoku Techno Arch Co Ltd | Capacitance-type inclination angle sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165316A1 (en) * | 2014-04-28 | 2015-11-05 | 哈尔滨工业大学 | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| US10145683B2 (en) | 2014-04-28 | 2018-12-04 | Harbin Institute Of Technology | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| CN105450951A (en) * | 2014-09-30 | 2016-03-30 | 深圳Tcl新技术有限公司 | Television and capacitance level meter |
| CN108303077A (en) * | 2018-01-19 | 2018-07-20 | 云南靖创液态金属热控技术研发有限公司 | attitude detecting sensor |
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