CN104019798A - Method and device for measuring dip angle of concentric coplanar trisected ring-circle nested polar plate - Google Patents
Method and device for measuring dip angle of concentric coplanar trisected ring-circle nested polar plate Download PDFInfo
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- CN104019798A CN104019798A CN201410179235.1A CN201410179235A CN104019798A CN 104019798 A CN104019798 A CN 104019798A CN 201410179235 A CN201410179235 A CN 201410179235A CN 104019798 A CN104019798 A CN 104019798A
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- coplanar
- circular
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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
-
- 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
Abstract
The invention relates to a method and a device for measuring a dip angle of a concentric coplanar trisected ring-circle nested polar plate and belongs to an angular surveying technique. The device is characterized in that an annular coplanar capacitance measuring head of a sensor unit consists of a round metal plate and three one-third circular-ring-shaped metal plates, wherein the four metal plates are coplanar and concentric with one another, the three one-third circular-ring-shaped metal plates are uniformly distributed along the circumferential direction, each one-third circular-ring-shaped metal plate can generate capacitance with the round metal plate, the annular coplanar capacitance measuring head is mounted on a round insulating substrate, the round insulating substrate is taken as a bottom surface of a cylindrical container, the cylindrical container is transversely arranged, insulating liquid equal to 1/2 volume of the container is injected into the container in a sealing manner, potentials of the four metal plates are extracted out by virtue of potential leads, the four metal plates are connected with an input end of a capacitance measuring unit through the four potential leads, and the capacitance measuring unit is connected with a dip angle calculating unit. According to the device and the method, when the container tilts, the relative positions of the annular coplanar capacitance measuring head and the insulating liquid are changed, and a dip angle value can be calculated by measuring the change of a capacitance value of a 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.By detecting the electrical quantities that this process causes, change, calculate container with respect to the angle of inner liquid surface, and then measure 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.When 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 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, introduced correlation technique.This sensor is exactly in the tubular closed container of electrical isolation system, to be encapsulated into the conductive liquid of 1/2 amount of internal volume, and container is placed tabular central electrode on interior two parallel sides, and there is silica coverlay on its surface, serves as dielectric.When 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 the 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 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, problems such as finiteness that sensor stability is difficult to obtain long-term guarantee, can surveys inclination angle range, the present invention proposes and has designed the nested pole plate inclination angle measurement method of concentric coplanar trisection ring-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 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 is trisection radially, 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 combination obtain annular coplanar electric capacity gauge head;
(2), the coplanar electric capacity gauge head of annular is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate form by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in insulativity liquid partly right segment angle 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 above-mentioned 1/3rd circular ring metal plates and circular metal plate formation, try to achieve inclination angle value.
The nested pole plate dip measuring device of concentric coplanar trisection ring-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 consists of a circular metal plate and three 1/3rd circular ring metal plates, wherein three 1/3rd circular ring metal plates are configured in a circular metal plate outside, 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; Four current potential lead-in wires are connected circular metal plate, three 1/3rd circular ring metal plates 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:
Therefore (1) comparing with resistance-type dip measuring device, is insulativity liquid due to what contact with electrode pad, has avoided the electrochemical reactions such as separating out of the metal of pole plate own, stability and reliability that can long term maintenance sensor.
(2) compare 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, so measurement range is unrestricted, has the advantages that 360 degree 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 electric capacity gauge head in the sensor unit of the nested pole plate dip measuring device of concentric coplanar trisection ring-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 trisection ring-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 trisection ring-circle
Fig. 5 is the one-piece construction schematic diagram of the nested pole plate dip measuring device of concentric coplanar trisection ring-circle
Piece number explanation in figure: 1 annular coplanar electric capacity gauge head, 2 circular metal plates, 3,4,1/5th three circular ring metal plate, 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 concentric coplanar trisection ring-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 consists 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 outsides, 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; Four current potentials lead-in wire 9,10,11,12 is connected circular metal plate 2, three 1/3rd circular ring metal plates 3,4,5 respectively successively with the input end of capacitance measurement unit 14; Described cylindrical container 7 is horizontal, in the interior sealing of described cylindrical container 7, injects the insulativity liquid 8 that accounts for cylindrical container 7 volumes 1/2nd.
Described round insulation substrate 6 is made by resin glass fiber material.
Described insulativity liquid 8 is the liquid of one or more composition combinations by the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, in the ethers of diglycol monotertiary butyl ether.
The nested pole plate inclination angle measurement method 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 is trisection radially, 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 combination 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 semicircular arc line and replace.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) the coplanar electric capacity gauge head of annular is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate form by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in insulativity liquid partly right segment angle 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 sheet metal 2,3 formed electric capacity and sheet metal 2,4 formed electric capacity and sheet metal 2,5 formed electric capacity 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.
Key diagram when Fig. 4 illustrates annular coplanar electric capacity gauge head inclination.Now sheet metal 2,3 formed electric capacity and sheet metal 2,4 formed electric capacity and sheet metal 2,5 formed electric capacity are respectively:
To above formula do poor, summation can obtain:
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 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 is trisection radially, 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 combination obtain annular coplanar electric capacity gauge head;
(2), the coplanar electric capacity gauge head of annular is dipped vertically in insulativity liquid, the liquid level of insulativity liquid is by the center of annular coplanar electric capacity gauge head, the capacitor's capacity that every a 1/3rd circular ring metal plates and circular metal plate form by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, the exposed segment angle that part is right in air of pole plate and be immersed in insulativity liquid partly right segment angle 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 above-mentioned 1/3rd circular ring metal plates and circular metal plate formation, try to achieve inclination angle value.
2. the nested pole plate dip measuring device of concentric coplanar trisection ring-circle, comprises capacitance measurement unit (14) and inclination angle computing unit (15), and 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) sealing assembling circular insulated substrate (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) consists 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 a 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; Four current potential lead-in wires (9,10,11,12) are connected circular metal plate (2), three 1/3rd circular ring metal plates (3,4,5) 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 trisection ring-circle according to claim 2, is characterized in that: described round insulation substrate (6) is made by 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 insulativity liquid (8) is by the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, the ketone of butanone, the liquid of one or more composition combinations in the ethers of diglycol monotertiary butyl ether.
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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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| CN104019798A true CN104019798A (en) | 2014-09-03 |
| CN104019798B CN104019798B (en) | 2016-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378964A (en) * | 2020-11-13 | 2021-02-19 | 苏州森斯微电子技术有限公司 | Method for non-invasively measuring LPG residual quantity of FRP container |
| CN112815921A (en) * | 2021-01-07 | 2021-05-18 | 深圳市度彼电子有限公司 | High-precision horizontal sensitive structure and processing method thereof |
| CN112815922A (en) * | 2021-01-07 | 2021-05-18 | 深圳市度彼电子有限公司 | High-precision angle sensor sensitive structure and processing method thereof |
Citations (4)
| 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 |
| 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 |
-
2014
- 2014-04-28 CN CN201410179235.1A patent/CN104019798B/en active Active
Patent Citations (4)
| 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 |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378964A (en) * | 2020-11-13 | 2021-02-19 | 苏州森斯微电子技术有限公司 | Method for non-invasively measuring LPG residual quantity of FRP container |
| CN112815921A (en) * | 2021-01-07 | 2021-05-18 | 深圳市度彼电子有限公司 | High-precision horizontal sensitive structure and processing method thereof |
| CN112815922A (en) * | 2021-01-07 | 2021-05-18 | 深圳市度彼电子有限公司 | High-precision angle sensor sensitive structure and processing method thereof |
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| CN104019798B (en) | 2016-04-27 |
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