CN104019798B - The nested pole plate inclination angle measurement method of concentric coplanar trisection ring-circle and device - Google Patents
The nested pole plate inclination angle measurement method of concentric coplanar trisection ring-circle and device Download PDFInfo
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- CN104019798B CN104019798B CN201410179235.1A CN201410179235A CN104019798B CN 104019798 B CN104019798 B CN 104019798B CN 201410179235 A CN201410179235 A CN 201410179235A CN 104019798 B CN104019798 B CN 104019798B
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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)
Abstract
The nested pole plate inclination angle measurement method of concentric coplanar trisection ring-circle and device belong to angle measurement technique, wherein the annular coplanar capacitance gauge head of sensor unit is made up of a circular metal plate and three 1/3rd circular ring metal plates, four pieces of sheet metals are with one heart coplanar, three 1/3rd circular ring metal plates are uniformly distributed circumferentially, each block and circular metal plate 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 sheet metals takes out and is connected with the input end 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, calculating the angle of container relative to the liquid surface of inside, and then measuring the pitch angle of container.
For the sensing mode at the pitch angle between the liquid surface that inspection instrument and its inside add, resistance-type and the large class of electrostatic capacitive two can be divided into.
Describe the correlation technique of resistance sensor in Jap.P. 2001-13160 publication, be the cylindrical shape that one end is closed canister in be encapsulated into appropriate conductive liquid, opening circular metal plate blocks.Pair of metal electrodes is through and be fixed on plectane.When the receptacle is tilted, container changes with inner liquid surface angulation, thus 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 change of its resistance value, the pitch angle of container just can be detected.
But metal electrode contacts with the direct of conductive liquid, cause the electrochemical reaction such as the precipitation of the metal of electrode own, the electrolysis of conductive liquid, the precision of sensor and stability are difficult to obtain long-term guarantee.
About static capacity type sensor, in Chinese CN1668892A patent, describe correlation technique.This sensor is exactly the conductive liquid of 1/2 amount being encapsulated into internal volume in the tubular closed container of electrical isolation system, and tabular central electrode is placed in two sides parallel in container, and there is silica coverlay on its surface, serves as dielectric.When the receptacle is tilted, container changes with inner liquid surface angulation, and the electric capacity between tabular central electrode and conductive liquid is changed.Thus, the change of its capacitance is measured, to detect the size at the pitch angle of container.
But when this static capacity type sensor, when the angle of inclination that tubular closed container occurs is excessive, the liquid of internal tank is biased side and loses the contact with another central electrode, and now this sensor loses effect.Due to the limitation of principle, its range can surveying 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 to contact, the problem such as sensor stability is difficult to obtain long-term guarantee, finiteness that inclination angle range can be surveyed, the present invention proposes and devises the nested pole plate inclination angle measurement method of concentric coplanar trisection ring-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.
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 trisection ring-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 outer circle annular metal sheet radially trisection, obtain three part of 1/3rd circular ring metal plate, described every a 1/3rd circular ring metal plates form electric capacity with circular metal plate respectively, and a described circular metal plate and three part of 1/3rd circular ring metal plate combine and 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, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate are formed by air specific inductive capacity, the exposed segment angle partly right in atmosphere of the specific inductive capacity of insulating liquid, separately pole plate and be immersed in segment angle partly right in insulating liquid and jointly determine;
(3) when, above-mentioned annular coplanar capacitance gauge head centrally carries out circumference rotation, 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 right segment angle of part in atmosphere of each pole plate and be immersed in the right segment angle of part in insulating liquid and change, measure the change of the capacitor's capacity that above-mentioned 1/3rd circular ring metal plates and circular metal plate are formed, try to achieve inclination value.
The nested pole plate dip measuring device of a kind of concentric coplanar trisection ring-circle, comprise capacitance measurement unit and Dip countion unit, described capacitance measurement unit is connected with Dip countion unit; Described device also comprises sensor unit, the structure of described sensor unit is: the circular insulated substrate of openend sealing assembling of at one end opening-like cylindrical container, is positioned at equipped annular coplanar capacitance gauge head on the inboard face of round insulation substrate in cylindrical container chamber; Described annular coplanar capacitance gauge head is made up of a circular metal plate and three 1/3rd circular ring metal plates, wherein three 1/3rd circular ring metal plates are configured in outside a circular metal plate, and three 1/3rd circular ring metal plates are coplanar concentric with a circular metal plate, three 1/3rd circular ring metal plates are uniformly distributed circumferentially; Circular metal plate, three 1/3rd circular ring metal plates are connected with the input end of capacitance measurement unit by four current potential lead-in wires successively respectively; Described cylindrical container is horizontal, seals the insulating liquid that injection accounts for cylindrical container volume 1/2nd in described cylindrical container.
The present invention has following characteristics and good result:
(1) compared with resistance-type dip measuring device, be insulating liquid due to what contact with electrode pad, avoid the electrochemical reactions such as the 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, because horizontal container can centrally 360 degree, axis rotation, the capacitance of output all the time with pitch angle existence function relation, therefore measurement range is unrestricted, has the advantages that 360 degree of gamuts are measured.
Accompanying drawing explanation
Fig. 1 is the profile skeleton view of the sensor unit of the nested pole plate dip measuring device of concentric coplanar trisection ring-circle
Fig. 2 is the principle schematic of annular coplanar capacitance gauge head in the sensor unit of concentric coplanar trisection ring-circle nested pole plate dip measuring device
Fig. 3 is the front elevation of annular coplanar capacitance gauge head in the sensor unit of concentric coplanar trisection ring-circle nested pole plate dip measuring device
Fig. 4 is key diagram when annular coplanar capacitance gauge head tilts in the sensor unit of concentric coplanar trisection ring-circle nested pole plate dip measuring device
Fig. 5 is the one-piece construction schematic diagram of the nested pole plate dip measuring device of concentric coplanar trisection ring-circle
In figure piece number illustrate: 1 annular coplanar capacitance gauge head, 2 circular metal plates, 3,4,1/5th three circular ring metal plate, 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.
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 trisection ring-circle, comprises sensor unit 13, capacitance measurement unit 14 and Dip countion 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 openend sealing assembling of at one end opening-like cylindrical container 7, is positioned at equipped annular coplanar capacitance gauge head 1 on the inboard face of round insulation substrate 6 in cylindrical container 7 chamber; Described annular coplanar capacitance gauge head 1 is made up of a circular metal plate 2 and three 1/3rd circular ring metal plates 3,4,5, wherein three 1/3rd circular ring metal plates 3,4,5 are configured in outside a circular metal plate 2, and three 1/3rd circular ring metal plates 3,4,5 are coplanar concentric with a circular metal plate 2, three 1/3rd circular ring metal plates 3,4,5 are uniformly distributed circumferentially; Circular metal plate 2, three 1/3rd circular ring metal plates 3,4,5 are connected with the input end of capacitance measurement unit 14 by four current potential lead-in wires 9,10,11,12 successively respectively; Described cylindrical container 7, in horizontal, seals the insulating liquid 8 that injection accounts for cylindrical container 7 volume 1/2nd in described cylindrical container 7.
Described round insulation substrate 6 is made up of resin glass fiber material.
Described insulating liquid 8 is the liquid combined by one or more compositions in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diethylene glycol monobutyl ehter.
The nested pole plate inclination angle measurement method of a kind of concentric coplanar trisection ring-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 outer circle annular metal sheet radially trisection, obtain three part of 1/3rd circular ring metal plate, described every a 1/3rd circular ring metal plates form electric capacity with circular metal plate respectively, and a described circular metal plate and three part of 1/3rd circular ring metal plate combine and obtain annular coplanar capacitance gauge head.
With reference to accompanying drawing 2, between the sheet metal of annular coplanar capacitance gauge head, line of electric force is uniformly distributed along sheet metal, can be similar to and replace with semicircular arc line.According to the solution formula of single coplanar capacitance, known annular coplanar capacitance and dielectric specific inductive capacity proportional, 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, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate are formed by air specific inductive capacity, the exposed segment angle partly right in atmosphere of the specific inductive capacity of insulating liquid, separately pole plate and be immersed in segment angle partly right in insulating liquid and jointly determine.
Fig. 3 is the front elevation of annular coplanar capacitance gauge head in the sensor unit of dip measuring device, and the electric capacity that sheet metal 2,3 is formed and the electric capacity that sheet metal 2,4 is formed and the electric capacity that sheet metal 2,5 is formed can represent with following formula respectively.
(3) when above-mentioned annular coplanar capacitance gauge head centrally carries out circumference rotation, 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 in atmosphere segment angle that part is right of each pole plate and to be immersed in insulating liquid partly right segment angle and to change.
Key diagram when Fig. 4 illustrates that annular coplanar capacitance gauge head tilts.The electric capacity that now electric capacity that formed of the electric capacity that formed of sheet metal 2,3 and sheet metal 2,4 and sheet metal 2,5 are formed is respectively:
To above formula carry out work poor, summation can obtain:
And then the solution formula of trying to achieve pitch angle is:
By capacitance measurement unit and Dip countion unit, the signal obtained is compared process, pitch angle can be obtained and export.
Claims (4)
1. the nested pole plate inclination angle measurement method of concentric coplanar trisection ring-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 outer circle annular metal sheet radially trisection, obtain three part of 1/3rd circular ring metal plate, every a 1/3rd circular ring metal plates form electric capacity with circular metal plate respectively, and a described circular metal plate and three part of 1/3rd circular ring metal plate combine and 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, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate are formed by air specific inductive capacity, the exposed segment angle partly right in atmosphere of the specific inductive capacity of insulating liquid, separately pole plate and be immersed in segment angle partly right in insulating liquid and jointly determine;
(3) when, above-mentioned annular coplanar capacitance gauge head centrally carries out circumference rotation, 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 right segment angle of part in atmosphere of each pole plate and be immersed in the right segment angle of part in insulating liquid and change, measure the change of the capacitor's capacity that above-mentioned 1/3rd circular ring metal plates and circular metal plate are formed, try to achieve inclination value.
2. the nested pole plate dip measuring device of concentric coplanar trisection ring-circle, comprise 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 comprises sensor unit (13), the structure of described sensor unit (13) is: the openend sealing circular insulated substrate of assembling (6) of at one end opening-like cylindrical container (7), is positioned at equipped annular coplanar capacitance gauge head (1) on round insulation substrate (6) inboard face in cylindrical container (7) chamber; Described annular coplanar capacitance gauge head (1) is made up of a circular metal plate (2) and three 1/3rd circular ring metal plates (3,4,5), wherein three 1/3rd circular ring metal plates (3,4,5) are configured in circular metal plate (2) outside, and three 1/3rd circular ring metal plates (3,4,5) are coplanar concentric with a circular metal plate (2), three 1/3rd circular ring metal plates (3,4,5) are uniformly distributed circumferentially; Circular metal plate (2), three 1/3rd circular ring metal plates (3,4,5) are connected with the input end of capacitance measurement unit (14) by four current potentials lead-in wire (9,10,11,12) successively respectively; Described cylindrical container (7), in horizontal, seals the insulating liquid (8) that injection accounts for cylindrical container (7) volume 1/2nd in described cylindrical container (7).
3. the nested pole plate dip measuring device of concentric coplanar trisection ring-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 trisection ring-circle according to claim 2, is characterized in that: described insulating liquid (8) is the liquid combined by one or more compositions in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diethylene glycol monobutyl ehter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410179235.1A CN104019798B (en) | 2014-04-28 | 2014-04-28 | The nested pole plate inclination angle measurement method of concentric coplanar trisection ring-circle and device |
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| CN201410179235.1A CN104019798B (en) | 2014-04-28 | 2014-04-28 | The nested pole plate inclination angle measurement method of concentric coplanar trisection ring-circle and device |
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| CN104019798B true CN104019798B (en) | 2016-04-27 |
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| CN112378964B (en) * | 2020-11-13 | 2022-02-22 | 苏州森斯微电子技术有限公司 | Method for non-invasively measuring LPG residual quantity of FRP container |
| CN112815921B (en) * | 2021-01-07 | 2023-05-30 | 深圳市杜比激光有限公司 | High-precision horizontal sensitive structure and processing method thereof |
| CN112815922B (en) * | 2021-01-07 | 2023-05-30 | 深圳市杜比激光有限公司 | High-precision angle sensor sensitive structure and processing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668892A (en) * | 2002-06-20 | 2005-09-14 | 株式会社生方制作所 | Electrostatic capacity type liquid sensor |
| CN102564398A (en) * | 2011-12-29 | 2012-07-11 | 东南大学 | Micro mechanical capacitor type dip sensor |
| CN203274678U (en) * | 2013-06-16 | 2013-11-06 | 衡水华锘光电科技有限公司 | 360 DEG electrolyte horizontal inclination sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001241948A (en) * | 2000-03-01 | 2001-09-07 | Tohoku Techno Arch Co Ltd | Capacitance-type inclination angle sensor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1668892A (en) * | 2002-06-20 | 2005-09-14 | 株式会社生方制作所 | Electrostatic capacity type liquid sensor |
| CN102564398A (en) * | 2011-12-29 | 2012-07-11 | 东南大学 | Micro mechanical capacitor type dip sensor |
| CN203274678U (en) * | 2013-06-16 | 2013-11-06 | 衡水华锘光电科技有限公司 | 360 DEG electrolyte horizontal inclination sensor |
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