CN104034256A - Concentric coplanar quartered ring-quartered circle nested pole plate inclination angle measurement method and device - Google Patents
Concentric coplanar quartered ring-quartered circle nested pole plate inclination angle measurement method and device Download PDFInfo
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- CN104034256A CN104034256A CN201410179252.5A CN201410179252A CN104034256A CN 104034256 A CN104034256 A CN 104034256A CN 201410179252 A CN201410179252 A CN 201410179252A CN 104034256 A CN104034256 A CN 104034256A
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Abstract
The invention discloses a quartered ring-quartered circle nested pole plate inclination angle measurement method and a device, and belongs to the angle measurement technology. An annular coplanar capacitance measurement head of a sensor unit is composed of four quarter round metal plates and four quarter circular metal plates, the eight metal plates are concentric and coplanar, the four quarter circular metal plates are uniformly distributed along the circumference and are in one-to-one correspondence with the four round metal plates to form a capacitor, the annular coplanar capacitance measurement head is placed on a round insulated substrate, the round insulated substrate serves as the bottom surface of a cylindrical container, the cylindrical container is transversely placed, insulated liquid with 1/2 volume is injected in a sealing mode in the container, potential leads take the potentials of the eight metal plates out and are connected with the input end of a capacitance measurement unit, the capacitance measurement unit is connected with an inclination angle calculation unit, and when the container inclines, the relative position between the annular coplanar capacitance measurement head and the insulated liquid changes, and the inclination angle is obtained through measuring change of the capacitance value.
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 quartern ring-fourth class cyclotomy 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 quartern ring-fourth class cyclotomy, 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 be the quartern radially, obtain respectively four parts of quadrant shape sheet metals and four parts of quadrant annular metal sheets, the quadrant shape sheet metal that described same segment angle is right and quadrant annular metal sheet form electric capacity, and described four parts of quadrant shape sheet metals and four parts of quadrant annular metal sheet combinations 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 the quadrant shape sheet metal that same segment angle is right and quadrant annular metal sheet 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 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 quadrant shape sheet metal of above-mentioned same segment angle and the formation of quadrant annular metal sheet, try to achieve inclination angle value.
The nested pole plate dip measuring device of concentric coplanar quartern ring-fourth class cyclotomy, 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 four quadrant shape sheet metals and four quadrant annular metal sheets, wherein four quadrant annular metal sheets are configured in four quadrant shape sheet metal outsides, and four quadrant annular metal sheets are coplanar concentric with four quadrant shape sheet metals, described four quadrant annular metal sheets are uniformly distributed circumferentially and are corresponding one by one with four quadrant shape sheet metals; Eight current potential lead-in wires are connected four quadrant shape sheet metals, four quadrant 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:
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.
(3) due to the equal quartern radially of circular metal plate and outer circle annular metal sheet, the four parts of quadrant shape sheet metals and the four parts of quadrant 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, from principle, eliminated by radially cutting apart produced slight error, measurement result is more accurate.
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 quartern ring-fourth class cyclotomy
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 quartern ring-fourth class cyclotomy
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 quartern ring-fourth class cyclotomy
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 quartern ring-fourth class cyclotomy
Fig. 5 is the one-piece construction schematic diagram of the nested pole plate dip measuring device of concentric coplanar quartern ring-fourth class cyclotomy
Piece number explanation in figure: 1 annular coplanar electric capacity gauge head, 2,3,4,5 quadrant shape sheet metals, 6,7,8,9 quadrant annular metal sheets, 10 round insulation substrates, 11 cylindrical containers, 12 insulativity liquid, 13,14,15,16,17,18,19,20 current potential lead-in wires, 21 sensor units, 22 capacitance measurement unit, 23 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 quartern ring-fourth class cyclotomy, comprises sensor unit 21, capacitance measurement unit 22 and inclination angle computing unit 23, 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 21 is: the circular insulated substrate 10 of the at one end openend of opening-like cylindrical container 11 sealing assembling is positioned at equipped annular coplanar electric capacity gauge head 1 on the inboard face of round insulation substrate 10 in cylindrical container 11 chambeies, the coplanar electric capacity gauge head 1 of described annular is by four quadrant shape sheet metals 2, 3, 4, 5 and four quadrant annular metal sheets 6, 7, 8, 9 form, four quadrant annular metal sheets 6 wherein, 7, 8, 9 are configured in four quadrant shape sheet metals 2, 3, 4, 5 outsides, and four quadrant annular metal sheets 6, 7, 8, 9 and four quadrant shape sheet metals 2, 3, 4, 5 is coplanar concentric, described four quadrant annular metal sheets 6, 7, 8, 9 be uniformly distributed circumferentially and with four quadrant shape sheet metals 2, 3, 4, 5 is corresponding one by one, eight current potential lead-in wires 13,14,15,16,17,18,19,20 are connected 2,3,4,5, four quadrant annular metal sheets 6,7,8,9 of four quadrant shape sheet metals respectively successively with the input end of capacitance measurement unit 22, described cylindrical container 11 is horizontal, in the interior sealing of described cylindrical container 11, injects the insulativity liquid 12 that accounts for cylindrical container 11 volumes 1/2nd.
Described round insulation substrate 10 is made by resin glass fiber material.
Described insulativity liquid 12 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 quartern ring-fourth class cyclotomy, 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 be the quartern radially, obtain respectively four parts of quadrant shape sheet metals and four parts of quadrant annular metal sheets, the quadrant shape sheet metal that described same segment angle is right and quadrant annular metal sheet form electric capacity, and described four parts of quadrant shape sheet metals and four parts of quadrant 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 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 the quadrant shape sheet metal that same segment angle is right and quadrant annular metal sheet 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 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 sheet metal 2,6 formed electric capacity, sheet metal 3,7 formed electric capacity, sheet metal 4,8 formed electric capacity and sheet metal 5,9 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 2,6 formed electric capacity, sheet metal 3,7 formed electric capacity, sheet metal 4,8 formed electric capacity and sheet metal 5,9 formed electric capacity are respectively:
Above formula combination is made to difference 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 quartern ring-fourth class cyclotomy, 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 be the quartern radially, obtain respectively four parts of quadrant shape sheet metals and four parts of quadrant annular metal sheets, the quadrant shape sheet metal that described same segment angle is right and quadrant annular metal sheet form electric capacity, and described four parts of quadrant shape sheet metals and four parts of quadrant annular metal sheet combinations 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 the quadrant shape sheet metal that same segment angle is right and quadrant annular metal sheet 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 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 quadrant shape sheet metal of above-mentioned same segment angle and the formation of quadrant annular metal sheet, try to achieve inclination angle value.
2. the nested pole plate dip measuring device of concentric coplanar quartern ring-fourth class cyclotomy, comprises capacitance measurement unit (22) and inclination angle computing unit (23), and described capacitance measurement unit (22) is connected with inclination angle computing unit (23), it is characterized in that: described device also comprises sensor unit (21), the structure of described sensor unit (21) is: the at one end openend of opening-like cylindrical container (11) sealing assembling circular insulated substrate (10) is positioned at equipped annular coplanar electric capacity gauge head (1) on the inboard face of round insulation substrate (10) in cylindrical container (11) chamber, the coplanar electric capacity gauge head of described annular (1) is by four quadrant shape sheet metals (2, 3, 4, 5) and four quadrant annular metal sheets (6, 7, 8, 9) form, four quadrant annular metal sheets (6 wherein, 7, 8, 9) be configured in four quadrant shape sheet metals (2, 3, 4, 5) outside, and four quadrant annular metal sheets (6, 7, 8, 9) with four quadrant shape sheet metals (2, 3, 4, 5) coplanar concentric, described four quadrant annular metal sheets (6, 7, 8, 9) be uniformly distributed circumferentially and with four quadrant shape sheet metals (2, 3, 4, 5) corresponding one by one, eight current potential lead-in wires (13,14,15,16,17,18,19,20) are connected four quadrant shape sheet metals (2,3,4,5), four quadrant annular metal sheets (6,7,8,9) respectively successively with the input end of capacitance measurement unit (22), described cylindrical container (11) is horizontal, and in described cylindrical container (11), the insulativity liquid (12) that accounts for cylindrical container (11) volume 1/2nd is injected in sealing.
3. the nested pole plate dip measuring device of concentric coplanar quartern ring-fourth class cyclotomy according to claim 2, is characterized in that: described round insulation substrate (10) is made by resin glass fiber material.
4. the nested pole plate dip measuring device of concentric coplanar quartern ring-fourth class cyclotomy according to claim 2, is characterized in that: described insulativity liquid (12) 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748726A (en) * | 2015-03-21 | 2015-07-01 | 朱增伟 | Easy inclination angle gauge |
| 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 |
| CN105953774A (en) * | 2016-06-30 | 2016-09-21 | 无锡中地钻探装备有限公司 | Anti-tilting indicating device for oil derrick |
| CN108267087A (en) * | 2016-12-30 | 2018-07-10 | 北京金风科创风电设备有限公司 | Positioning device and positioning method |
| CN112229379A (en) * | 2020-09-25 | 2021-01-15 | 南京信息职业技术学院 | Electrolyte fan cylinder variable inclination angle tester |
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| US20020043001A1 (en) * | 1999-02-18 | 2002-04-18 | Honda Giken Kogyo Kabushiki Kaisha | Electrostatic capacitor-type inclination sensor |
| WO2002082017A1 (en) * | 2001-04-09 | 2002-10-17 | Korea Research Institute Of Standards And Science | Capacitive sensor for measuring of inclination |
| US20050144794A1 (en) * | 2003-10-31 | 2005-07-07 | Hiroshi Ueno | Electrostatic capacitance tilt angle sensor |
| CN2733311Y (en) * | 2004-10-26 | 2005-10-12 | 辽宁工程技术大学 | Capacitance-type inclination angle sensor |
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2014
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Patent Citations (4)
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| US20020043001A1 (en) * | 1999-02-18 | 2002-04-18 | Honda Giken Kogyo Kabushiki Kaisha | Electrostatic capacitor-type inclination sensor |
| WO2002082017A1 (en) * | 2001-04-09 | 2002-10-17 | Korea Research Institute Of Standards And Science | Capacitive sensor for measuring of inclination |
| US20050144794A1 (en) * | 2003-10-31 | 2005-07-07 | Hiroshi Ueno | Electrostatic capacitance tilt angle sensor |
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Cited By (7)
| 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 |
| CN104748726A (en) * | 2015-03-21 | 2015-07-01 | 朱增伟 | Easy inclination angle gauge |
| CN105953774A (en) * | 2016-06-30 | 2016-09-21 | 无锡中地钻探装备有限公司 | Anti-tilting indicating device for oil derrick |
| CN108267087A (en) * | 2016-12-30 | 2018-07-10 | 北京金风科创风电设备有限公司 | Positioning device and positioning method |
| CN108267087B (en) * | 2016-12-30 | 2020-02-07 | 北京金风科创风电设备有限公司 | Positioning device and positioning method |
| CN112229379A (en) * | 2020-09-25 | 2021-01-15 | 南京信息职业技术学院 | Electrolyte fan cylinder variable inclination angle tester |
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