CN104034308B - Concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method and device - Google Patents
Concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method and device Download PDFInfo
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- CN104034308B CN104034308B CN201410179253.XA CN201410179253A CN104034308B CN 104034308 B CN104034308 B CN 104034308B CN 201410179253 A CN201410179253 A CN 201410179253A CN 104034308 B CN104034308 B CN 104034308B
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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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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method and device belong to angle measurement technique, wherein the annular coplanar capacitance gauge head of sensor unit is made up of two half-round metal plates and two semi-circular shape metallic plates, four pieces of metallic plates are coplanar with one heart, two semi-circular shape metallic plates be uniformly distributed circumferentially and with two half-round metal plate one_to_one corresponding, form electric capacity, this annular coplanar capacitance gauge head is placed on round insulation substrate, round insulation substrate is as cylindrical container bottom surface, and by horizontal for this cylindrical container, seal the insulating liquid of injected slurry volume 1/2 in a reservoir, the current potential of four pieces of metallic plates is taken out and is connected with the input of capacitance measurement unit by current potential lead-in wire, capacitance measurement unit is connected with Dip countion unit；During container run-off the straight, the relative position of annular coplanar capacitance gauge head and insulating liquid changes, and by measuring the change of capacitor's capacity, can try to achieve inclination value.
Description
Technical field
The invention belongs to technical field of angle detection, 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 the principle utilizing the surface of liquid under static state to remain level.Inside adds the container run-off the straight of liquid, and after stable, liquid level keeps level, but the relative position of liquid and container there occurs change.By detecting the electrical quantities change that this process causes, calculate the container angle relative to internal liquid surface, and then measure the inclination angle of container.
For the sensing mode at the inclination angle between detection container and its internal affiliated liquid surface, resistance-type and the big class of electrostatic capacitive two can be divided into.
Describing the correlation technique of resistance sensor in Japan Patent 2001-13160 publication, be encapsulated into appropriate conductive liquid in the cylindric canister closed one end, opening circular metal plate blocks.By through for pair of metal electrodes and be fixed on plectane.When the receptacle is tilted, container changes with internal liquid surface angulation, so that the contact area of metal electrode and conductive liquid changes so that the resistance between canister and each metal electrode changes.By measuring the change of its resistance value, the inclination angle of container just can be detected.
But, directly contacting of metal electrode and conductive liquid, cause the electrochemical reaction such as electrolysis of the precipitation of the metal of electrode own, conductive liquid, the precision of sensor and stability hardly result in long-term guarantee.
About static capacity type sensor, China's CN1668892A patent describes correlation technique.This sensor is exactly the conductive liquid of 1/2 amount being encapsulated into internal volume in the tubular hermetic container of electric insulation system, and two sides parallel in container are placed tabular main electrode, and there is silica coverlay on its surface, serves as electrolyte.When the receptacle is tilted, container changes with internal liquid surface angulation so that the electric capacity between tabular main electrode and conductive liquid changes.Thus, the change of its capacitance is measured, to detect the size at the inclination angle of container.
But, when this static capacity type sensor, when the angle of inclination that tubular hermetic container occurs is excessive, the liquid biasing side of internal tank and lose and the contacting of another main electrode, now this sensor loses effect.Due to the limitation of principle, its range that can survey inclination angle is always limited, and depends on the physical dimension of internal tank.
Summary of the invention
The present invention is directed to directly the contacting of metal electrode and conductive liquid in the sensing mode at above-mentioned existing detection inclination angle, sensor stability hardly results in long-term guarantee, can survey the problem such as finiteness of inclination angle range, the present invention proposes pole plate inclination angle measurement method nested with devising concentric coplanar bisection ring-Bisected Circle and device, the insulating liquid used in this invention avoids the electrochemical reactions such as the precipitation of pole plate, and the annular coplanar capacitance structure in sensor unit achieves 360 degree of gamuts and measures.
The purpose of the present invention is achieved through the following technical solutions:
A kind of concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method, described method step is as follows:
(1), by coplanar to a circular metal plate and outer circle annular metal sheet concentric placement, and circular metal plate and outer circle annular metal sheet radially halve, respectively obtain two parts of half-round metal plates and two parts of semi-circular shape metallic plates, described same segment angle to half-round metal plate and semi-circular shape metallic plate form electric capacity, described two parts of half-round metal plates and two parts of semi-circular shape metal plates combine obtain annular coplanar capacitance gauge head；
(2), annular coplanar capacitance gauge head is dipped vertically in insulating liquid, the liquid level of insulating liquid by the center of annular coplanar capacitance gauge head, same segment angle to half-round metal plate and the capacitor's capacity that formed of semi-circular shape metallic plate by the dielectric constant of air, the exposed part in atmosphere of the dielectric constant of insulating liquid, respective pole plate to segment angle and be immersed in insulating liquid part to segment angle together decide on；
(3) when, above-mentioned annular coplanar capacitance gauge head carries out circumference rotation along center, its inclination angle changes, the liquid level of insulating liquid keeps level, the relative position of annular coplanar capacitance gauge head and insulating liquid changes, the exposed part in atmosphere of each pole plate to segment angle and be immersed in insulating liquid part to segment angle change, measure above-mentioned same segment angle to half-round metal plate and the change of capacitor's capacity that formed of semi-circular shape metallic plate, try to achieve inclination value.
A kind of concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device, including capacitance measurement unit and Dip countion unit, described capacitance measurement unit is connected with Dip countion unit；Described device also includes sensor unit, the structure of described sensor unit is: the opening of at one end opening-like cylindrical container seals the circular insulated substrate of assembling, is positioned on face, round insulation substrate inboard at cylindrical container intracavity and is equipped with annular coplanar capacitance gauge head；Described annular coplanar capacitance gauge head is made up of two half-round metal plates and two semi-circular shape metallic plates, two of which semi-circular shape metallic plate is arranged in outside two half-round metal plates, and two semi-circular shape metallic plates are coplanar concentric with two half-round metal plates, said two semi-circular shape metallic plate be uniformly distributed circumferentially and with two half-round metal plate one_to_one corresponding；Two half-round metal plates, two semi-circular shape metallic plates are connected by four current potential lead-in wires successively respectively with the input of capacitance measurement unit；Described cylindrical container is horizontal, seals injection and account for the insulating liquid of cylindrical container volume 1/2nd in described cylindrical container.
The invention have the characteristics that and good result:
(1) compared with resistance-type dip measuring device, it is insulating liquid due to what contact with electrode pad, it is to avoid the electrochemical reaction such as precipitation of the metal of pole plate own, therefore, it is possible to the stability of long term maintenance sensor and reliability.
(2) compared with electrostatic capacitive dip measuring device, due to horizontal container can along central axis 360 degree rotation, the capacitance of output all the time with inclination angle existence function relation, therefore measure scope unrestricted, have the advantages that 360 degree of gamuts are measured.
(3) owing to circular metal plate and outer circle annular metal sheet are all radially halved, the two parts of half-round metal plates obtained and two parts of semi-circular shape metallic plate one_to_one corresponding, make the electric force lines distribution near the radial direction cut-off rule of annular coplanar capacitance gauge head more uniform, eliminating principle by the produced slight error of radially segmentation, measurement result is more accurate.
Accompanying drawing explanation
Fig. 1 is the perspective physical form view of the sensor unit of concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device
Fig. 2 be concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device sensor unit in annular coplanar capacitance gauge head principle schematic
Fig. 3 be concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device sensor unit in annular coplanar capacitance gauge head front view
Fig. 4 be concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device sensor unit in annular coplanar capacitance gauge head tilt time explanation figure
Fig. 5 is the overall structure schematic diagram of concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device
In figure, piece number illustrates: 1 annular coplanar capacitance gauge head, 2,3 half-round metal plates, 4,5 semi-circular shape metallic plates, 6 round insulation substrates, 7 cylindrical containers, 8 insulating liquid, 9,10,11,12 current potential lead-in wires, 13 sensor units, 14 capacitance measurement unit, 15 Dip countion unit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
A kind of concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device, including sensor unit 13, capacitance measurement unit 14 and Dip countion unit 15, is illustrated in figure 5 the overall structure schematic diagram of dip measuring device.
The perspective physical form view of the sensor unit of dip measuring device shown in Fig. 1, the structure of described sensor unit 13 is: the opening of at one end opening-like cylindrical container 7 seals the circular insulated substrate 6 of assembling, is positioned on the inboard face of round insulation substrate 6 at cylindrical container 7 intracavity and is equipped with annular coplanar capacitance gauge head 1；Described annular coplanar capacitance gauge head 1 is made up of 2,3 and two semi-circular shape metallic plates 4,5 of two half-round metal plates, two of which semi-circular shape metallic plate 4,5 is arranged in outside two half-round metal plates 2,3, and two semi-circular shape metallic plates 4,5 are coplanar concentric with two half-round metal plates 2,3, said two semi-circular shape metallic plate 4,5 be uniformly distributed circumferentially and with two half-round metal plates 2,3 one_to_one corresponding；2,3, two semi-circular shape metallic plates 4,5 of two half-round metal plates are connected by four current potential lead-in wires 9,10,11,12 successively respectively with the input of capacitance measurement unit 14；Described cylindrical container 7, in horizontal, seal injection in described cylindrical container 7 and accounts for the insulating liquid 8 of cylindrical container 7 volume 1/2nd.
Described round insulation substrate 6 is made up of resin glass fiber material.
Described insulating liquid 8 be by methanol, ethanol, the alcohols of isopropanol, acetone, the ketone of butanone, diethylene glycol monobutyl ehter ethers in one or more compositions combination liquid.
A kind of concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method, the method step is as follows:
(1) by coplanar to a circular metal plate and outer circle annular metal sheet concentric placement, and circular metal plate and outer circle annular metal sheet radially halve, respectively obtain two parts of half-round metal plates and two parts of semi-circular shape metallic plates, described same segment angle to half-round metal plate and semi-circular shape metallic plate form electric capacity, described two parts of half-round metal plates and two parts of semi-circular shape metal plates combine obtain annular coplanar capacitance gauge head.
With reference to accompanying drawing 2, between the metallic plate of annular coplanar capacitance gauge head, electric lines of force is uniformly distributed along metallic plate, can be similar to and replace with semicircular arc line.Solution formula according to single coplanar capacitance, it is known that annular coplanar capacitance is proportional with dielectric dielectric constant, can be represented by the formula.
C=K ε
(2) annular coplanar capacitance gauge head is dipped vertically in insulating liquid, the liquid level of insulating liquid by the center of annular coplanar capacitance gauge head, same segment angle to half-round metal plate and the capacitor's capacity that formed of semi-circular shape metallic plate by the dielectric constant of air, the exposed part in atmosphere of the dielectric constant of insulating liquid, respective pole plate to segment angle and be immersed in insulating liquid part to segment angle together decide on.
Fig. 3 be dip measuring device sensor unit in the front view of annular coplanar capacitance gauge head, electric capacity that metallic plate 2,4 is formed and the electric capacity that metallic plate 3,5 is formed can represent with following formula respectively.
(3) when above-mentioned annular coplanar capacitance gauge head carries out circumference rotation along center, its inclination angle changes, the liquid level of insulating liquid keeps level, the relative position of annular coplanar capacitance gauge head and insulating liquid changes, the exposed part in atmosphere of each pole plate to segment angle and be immersed in insulating liquid part to segment angle change.
Fig. 4 illustrates explanation figure when annular coplanar capacitance gauge head tilts.Electric capacity that now metallic plate 2,4 is formed and the electric capacity that metallic plate 3,5 is formed are respectively as follows:
Two formulas are made difference and can be obtained:
And then the solution formula trying to achieve inclination angle is:
By capacitance measurement unit and Dip countion unit, the signal obtained is compared process, inclination angle output can be obtained.
Claims (4)
1. concentric coplanar bisection ring-Bisected Circle nesting pole plate inclination angle measurement method, it is characterised in that: described method step is as follows:
(1), by coplanar to a circular metal plate and outer circle annular metal sheet concentric placement, and circular metal plate and outer circle annular metal sheet radially halve, respectively obtain two parts of half-round metal plates and two parts of semi-circular shape metallic plates, same segment angle to half-round metal plate and semi-circular shape metallic plate form electric capacity, described two parts of half-round metal plates and two parts of semi-circular shape metal plates combine obtain annular coplanar capacitance gauge head；
(2), annular coplanar capacitance gauge head is dipped vertically in insulating liquid, the liquid level of insulating liquid by the center of annular coplanar capacitance gauge head, same segment angle to half-round metal plate and the capacitor's capacity that formed of semi-circular shape metallic plate by the dielectric constant of air, the exposed part in atmosphere of the dielectric constant of insulating liquid, respective pole plate to segment angle and be immersed in insulating liquid part to segment angle together decide on；
(3) when, above-mentioned annular coplanar capacitance gauge head carries out circumference rotation along center, its inclination angle changes, the liquid level of insulating liquid keeps level, the relative position of annular coplanar capacitance gauge head and insulating liquid changes, the exposed part in atmosphere of each pole plate to segment angle and be immersed in insulating liquid part to segment angle change, measure above-mentioned same segment angle to half-round metal plate and the change of capacitor's capacity that formed of semi-circular shape metallic plate, try to achieve inclination value.
2. concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device, including capacitance measurement unit (14) and Dip countion unit (15), described capacitance measurement unit (14) is connected with Dip countion unit (15)；It is characterized in that: described device also includes sensor unit (13), the structure of described sensor unit (13) is: the opening of at one end opening-like cylindrical container (7) seals the circular insulated substrate (6) of assembling, is positioned at equipped annular coplanar capacitance gauge head (1) on the inboard face of round insulation substrate (6) at cylindrical container (7) intracavity；Described annular coplanar capacitance gauge head (1) is made up of two half-round metal plates (2,3) and two semi-circular shape metallic plates (4,5), two of which semi-circular shape metallic plate (4,5) is arranged in two half-round metal plates (2,3) outside, and two semi-circular shape metallic plates (4,5) are coplanar concentric with two half-round metal plates (2,3), said two semi-circular shape metallic plate (4,5) be uniformly distributed circumferentially and with two half-round metal plates (2,3) one_to_one corresponding；Two half-round metal plates (2,3), two semi-circular shape metallic plates (4,5) are connected by four current potentials lead-in wire (9,10,11,12) successively respectively with the input of capacitance measurement unit (14)；Described cylindrical container (7), in horizontal, seal injection in described cylindrical container (7) and accounts for the insulating liquid (8) of cylindrical container (7) volume 1/2nd.
3. concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device according to claim 2, it is characterised in that: described round insulation substrate (6) is made up of resin glass fiber material.
4. concentric coplanar bisection ring-Bisected Circle nesting pole plate dip measuring device according to claim 2, it is characterised in that: described insulating liquid (8) be by methanol, ethanol, the alcohols of isopropanol, acetone, the ketone of butanone, diethylene glycol monobutyl ehter ethers in one or more compositions combination liquid.
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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| CN104034308B true CN104034308B (en) | 2016-07-06 |
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| 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 |
| CN105450951B (en) * | 2014-09-30 | 2019-04-02 | 深圳Tcl新技术有限公司 | TV and capacitance level instrument |
| CN108303077B (en) * | 2018-01-19 | 2020-10-23 | 云南靖创液态金属热控技术研发有限公司 | Attitude detection sensor |
Citations (8)
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|---|---|---|---|---|
| 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 |
| 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 |
-
2014
- 2014-04-28 CN CN201410179253.XA patent/CN104034308B/en active Active
Patent Citations (8)
| 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 |
| 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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