CN104019797A - Method and device for measuring dip angles of oppositely crossly placed paired quartered ring-circle nested polar plates - Google Patents
Method and device for measuring dip angles of oppositely crossly placed paired quartered ring-circle nested polar plates Download PDFInfo
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- CN104019797A CN104019797A CN201410179173.4A CN201410179173A CN104019797A CN 104019797 A CN104019797 A CN 104019797A CN 201410179173 A CN201410179173 A CN 201410179173A CN 104019797 A CN104019797 A CN 104019797A
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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
Abstract
The invention relates to a method and a device for measuring dip angles of oppositely crossly placed paired quartered ring-circle nested polar plates and belongs to an angular surveying technique. The device is characterized in that each of two annular coplanar capacitance measuring heads of a sensor unit consists of a round metal plate and four quarter circular-ring-shaped metal plates, wherein the five metal plates are coplanar and concentric with one another, the four quarter circular metal plates are uniformly distributed along the circumferential direction, each quarter circular metal plate can generate capacitance with the round metal plate, the two annular coplanar capacitance measuring heads are mounted on two round insulating substrates, the two round insulating substrates are taken as bottom surfaces 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 ten metal plates are extracted out by virtue of potential leads, the ten 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 two annular coplanar capacitance measuring heads 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.The electrical quantities variation causing by detecting this process, calculates the angle of container with respect to inner liquid surface, and then measures the pitch angle of container.
The sensing mode at the pitch angle between the liquid surface adding for inspection instrument and its inside, can be divided into resistance-type and the large class of electrostatic capacitive two.
In Jap.P. 2001-13160 communique, having introduced the correlation technique of resistance sensor, is in the canister cylindraceous of one end sealing, to be encapsulated into appropriate conductive liquid, and opening stops up with circular metal plate.Pair of metal electrodes is connected and be fixed on plectane.In the time of container lean, container and inner liquid surface angulation change, thereby the contact area of metal electrode and conductive liquid is changed, and the resistance between canister and each metal electrode is changed.By measuring the variation of its resistance value, just can detect the pitch angle of container.
But metal electrode contacts with the direct of conductive liquid, cause the electrochemical reactions such as the electrolysis of the separating out of the own metal of electrode, conductive liquid, the precision of sensor and stability are difficult to obtain long-term guarantee.
About static capacity type sensor, in Chinese CN1668892A patent, introduce correlation technique.This sensor is exactly the conductive liquid that is encapsulated into 1/2 amount of internal volume in the tubular closed container of electrical isolation system, and container is placed tabular central electrode on interior two parallel sides, and there is silica coverlay on its surface, serves as dielectric.In the time of container lean, container and inner liquid surface angulation change, and the electric capacity between tabular central electrode and conductive liquid is changed.Thereby, the variation of its capacitance is measured, to detect the size at pitch angle of container.
But the in the situation that of this static capacity type sensor, when angle of inclination that tubular closed container occurs is when excessive, the liquid of internal tank is setovered a side and lost and the contacting of another central electrode, now this sensor loses effect.Due to the limitation of principle, its range that can survey pitch angle is always limited, and depends on the physical dimension of internal tank.
Summary of the invention
The present invention is directed to metal electrode and conductive liquid in the sensing mode at above-mentioned existing detection inclination angle directly contact, sensor stability is difficult to the problems such as the finiteness that obtains long-term guarantee, can survey inclination angle range, the present invention proposes and has designed the nested pole plate of paired quartern ring-circle be staggeredly placed in opposite directions formula inclination angle measurement method 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:
A kind of nested pole plate of quartern ring-circle in pairs formula inclination angle measurement method that is staggeredly placed in opposite directions, described method step is as follows:
(1), by a circular metal plate and the coplanar concentric placement of outer circle annular metal sheet, and the radially quartern of outer circle annular metal sheet, obtain four parts of quadrant annular metal sheets, described every a quadrant annular metal sheet forms electric capacity with circular metal plate respectively, and a described circular metal plate and four parts of quadrant annular metal sheet combinations obtain annular coplanar electric capacity gauge head;
(2), two coplanar electric capacity gauge heads of above-mentioned annular are dipped vertically in insulativity liquid, two coaxial placements in opposite directions of the coplanar electric capacity gauge head of annular, and the quadrant annular metal sheet of two coplanar electric capacity gauge heads of annular is interspersed, the liquid level of insulativity liquid is by the center of two coplanar electric capacity gauge heads of annular, the capacitor's capacity that every a quadrant ring sheet metal and circular metal plate form is by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, separately 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 jointly determine,
(3) when, the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of two coplanar electric capacity gauge heads 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 quadrant annular metal sheet and circular metal plate formation, try to achieve inclination angle value;
(4), the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, when insulativity liquid levels is closed on the radially cut-off rule of the coplanar electric capacity gauge head of arbitrary annular, get the result of calculation of another annular coplanar electric capacity gauge head gained as final inclination angle result of calculation.
A kind of nested pole plate of quartern ring-circle in pairs formula dip measuring device that is staggeredly placed in opposite directions, 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: at two ends, two openends of opening-like cylindrical container seal respectively two round insulation substrates of assembling, is positioned on the inboard face of two round insulation substrates and is equipped with respectively two the coplanar electric capacity gauge head of annular A, B in cylindrical container chamber; The coplanar electric capacity gauge head of described annular A is made up of a circular metal plate a and four quadrant annular metal sheet b, c, d, e, wherein four quadrant annular metal sheet b, c, d, e are configured in a circular metal plate a outside, and four quadrant annular metal sheet b, c, d, e are coplanar concentric with a circular metal plate a, and four 1/4th sheet metal b, c, d, e are uniformly distributed circumferentially; The coplanar electric capacity gauge head of described annular B is made up of a circular metal plate f and four quadrant annular metal sheet g, h, i, j, wherein four quadrant annular metal sheet g, h, i, j are configured in a circular metal plate f outside, and four quadrant annular metal sheet g, h, i, j are coplanar concentric with a circular metal plate f, and four quadrant annular metal sheet g, h, i, j are uniformly distributed circumferentially; Four quadrant annular metal sheet g, h, i, the j of four quadrant annular metal sheet b, c, d, e and the annular coplanar electric capacity gauge head B of the coplanar electric capacity gauge head of described annular A are interspersed; Ten current potential lead-in wires are connected circular metal plate a, four quadrant annular metal sheet b, c, d, e and circular metal plate f, four quadrant annular metal sheet g, h, i, j respectively successively with the input end of capacitance measurement unit; Described cylindrical container is horizontal, and in described cylindrical container, the insulativity liquid that accounts for cylindrical container volume 1/2nd is injected in sealing.
The present invention has following characteristics and good result:
(1) compared with resistance-type dip measuring device, be insulativity liquid due to what contact with electrode pad, avoid the electrochemical reactions such as separating out of the metal of pole plate own, stability and reliability that therefore can long term maintenance sensor.
(2) compared with electrostatic capacitive dip measuring device, because horizontal container can be along the rotation of central axis 360 degree, the capacitance of output all the time with pitch angle existence function relation, therefore measurement range is unrestricted, has the advantages that 360 degree gamuts are measured.
(3) owing to having used the coaxial coplanar electric capacity gauge head of two annulars of placing in opposite directions, and the quadrant annular metal sheet of two coplanar electric capacity gauge heads of annular is interspersed, the sensitivity of measurement of dip angle when having improved insulativity liquid levels and closing on the cut-off rule radially of annular coplanar electric capacity gauge head, measurement result is more accurate.
Brief description of the drawings
Fig. 1 is be staggeredly placed the in opposite directions profile skeleton view of sensor unit of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Fig. 2 is be staggeredly placed the in opposite directions principle schematic of annular coplanar electric capacity gauge head A in the sensor unit of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Fig. 3 is be staggeredly placed the in opposite directions principle schematic of annular coplanar electric capacity gauge head B in the sensor unit of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Fig. 4 is be staggeredly placed the in opposite directions front elevation of annular coplanar electric capacity gauge head A in the sensor unit of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Fig. 5 is be staggeredly placed the in opposite directions front elevation of annular coplanar electric capacity gauge head B in the sensor unit of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Fig. 6 is the key diagram that the nested pole plate of paired quartern ring-circle is staggeredly placed in the sensor unit of formula dip measuring device when annular coplanar electric capacity gauge head A tilts in opposite directions
Fig. 7 is the key diagram that the nested pole plate of paired quartern ring-circle is staggeredly placed in the sensor unit of formula dip measuring device when annular coplanar electric capacity gauge head B tilts in opposite directions
Fig. 8 is be staggeredly placed the in opposite directions one-piece construction schematic diagram of formula dip measuring device of the nested pole plate of paired quartern ring-circle
Piece number explanation in figure: 1 annular coplanar electric capacity gauge head A, 2 circular metal plate a, 3 quadrant annular metal sheet b, 4 quadrant annular metal sheet c, 5 quadrant annular metal sheet d, 6 quadrant annular metal sheet e, 7 round insulation substrates, 8 annular coplanar electric capacity gauge head B, 9 circular metal plate f, 10 quadrant annular metal sheet g, 11 quadrant annular metal sheet h, 12 quadrant annular metal sheet i, 13 quadrant annular metal sheet j, 14 round insulation substrates, 15 cylindrical containers, 16 insulativity liquid, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26 current potential lead-in wires, 27 sensor units, 28 capacitance measurement unit, 29 inclination angle computing units.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
A kind of nested pole plate of quartern ring-circle in pairs formula dip measuring device that is staggeredly placed in opposite directions, comprises sensor unit 27, capacitance measurement unit 28 and inclination angle computing unit 29, is illustrated in figure 8 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 27 is: at two ends, two openends of opening-like cylindrical container 15 seal respectively two round insulation substrates 7,14 of assembling, is positioned on two round insulation substrates, 7,14 inboard faces equipped two the coplanar electric capacity gauge head of annular A1, B8 respectively in cylindrical container 15 chambeies; The coplanar electric capacity gauge head of described annular A1 is made up of a circular metal plate a2 and four quadrant annular metal sheet b3, c4, d5, e6, wherein four quadrant annular metal sheet b3, c4, d5, e6 are configured in a circular metal plate a2 outside, and four quadrant annular metal sheet b3, c4, d5, e6 are coplanar concentric with a circular metal plate a2, and four 1/4th sheet metal b3, c4, d5, e6 are uniformly distributed circumferentially; The coplanar electric capacity gauge head of described annular B8 is made up of a circular metal plate f9 and four quadrant annular metal sheet g10, h11, i12, j13, wherein four quadrant annular metal sheet g10, h11, i12, j13 are configured in a circular metal plate f9 outside, and four quadrant annular metal sheet g10, h11, i12, j13 are coplanar concentric with a circular metal plate f9, and four quadrant annular metal sheet g10, h11, i12, j13 are uniformly distributed circumferentially; Four quadrant annular metal sheet g10, h11, i12, the j13 of four quadrant annular metal sheet b3, c4, d5, e6 and the annular coplanar electric capacity gauge head B8 of the coplanar electric capacity gauge head of described annular A1 are interspersed; Ten current potential lead-in wires 17,18,19,20,21,22,23,24,25,26 are connected circular metal plate a2, four quadrant annular metal sheet b3, c4, d5, e6 and circular metal plate f9, four quadrant annular metal sheet g10, h11, i12, j13 respectively successively with the input end of capacitance measurement unit 28; Described cylindrical container 15 is horizontal, injects in the interior sealing of described cylindrical container 15 the insulativity liquid 16 that accounts for cylindrical container 15 volumes 1/2nd.
Described round insulation substrate 7,14 is made up of resin glass fiber material.
Described insulativity liquid 16 is the liquid by one or more composition combinations in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diglycol monotertiary butyl ether.
A kind of nested pole plate of quartern ring-circle in pairs formula inclination angle measurement method that is staggeredly placed in opposite directions, the method step is as follows:
(1) by a circular metal plate and the coplanar concentric placement of outer circle annular metal sheet, and the radially quartern of outer circle annular metal sheet, obtain four parts of quadrant annular metal sheets, described every a quadrant annular metal sheet forms electric capacity with circular metal plate respectively, and a described circular metal plate and four parts of quadrant annular metal sheet combinations obtain annular coplanar electric capacity gauge head.
With reference to accompanying drawing 2,3, between the sheet metal of annular coplanar electric capacity gauge head A, B, line of electric force is uniformly distributed along sheet metal, can be similar to the replacement of semicircular arc line.According to the solution formula of single coplanar electric capacity, the coplanar electric capacity of known annular and dielectric specific inductive capacity are proportional, can be represented by the formula.
C＝K·ε
(2) two coplanar electric capacity gauge heads of above-mentioned annular are dipped vertically in insulativity liquid, two coaxial placements in opposite directions of the coplanar electric capacity gauge head of annular, and the quadrant annular metal sheet of two coplanar electric capacity gauge heads of annular is interspersed, the liquid level of insulativity liquid is by the center of two coplanar electric capacity gauge heads of annular, the capacitor's capacity that every a quadrant annular metal sheet and circular metal plate form is by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, separately 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 jointly determine.
Fig. 4 is the front elevation of annular coplanar electric capacity gauge head A in the sensor unit of dip measuring device, and the electric capacity that the electric capacity that the electric capacity that sheet metal 2,3 forms and sheet metal 2,4 form, the electric capacity that sheet metal 2,5 forms and sheet metal 2,6 form can represent with following formula respectively.
Fig. 5 is the front elevation of annular coplanar electric capacity gauge head B in the sensor unit of dip measuring device, and the electric capacity that the electric capacity that the electric capacity that sheet metal 9,10 forms and sheet metal 9,11 form, the electric capacity that sheet metal 9,12 forms and sheet metal 9,13 form can represent with following formula respectively.
(3) when the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of two coplanar electric capacity gauge heads of annular and insulativity liquid changes, the exposed segment angle that part is right in air of each pole plate and be immersed in the right segment angle of part in insulativity liquid and change.
Fig. 6 illustrates key diagram when annular coplanar electric capacity gauge head A tilts.The electric capacity that the electric capacity that the electric capacity that now sheet metal 2,3 forms and sheet metal 2,4 form, the electric capacity that sheet metal 2,5 forms and sheet metal 2,6 form is respectively:
Above formula combination is made to difference can be obtained:
And then the solution formula of trying to achieve pitch angle is:
Fig. 7 illustrates key diagram when annular coplanar electric capacity gauge head B tilts.The electric capacity that the electric capacity that the electric capacity that now sheet metal 9,10 forms and sheet metal 9,11 form, the electric capacity that sheet metal 9,12 forms and sheet metal 9,13 form is 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.
(4) the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, when insulativity liquid levels is closed on the radially cut-off rule of the coplanar electric capacity gauge head of arbitrary annular, get the result of calculation of another annular coplanar electric capacity gauge head gained as final inclination angle result of calculation.
When pitch angle ± 45 ° and ± 135 ° near time, the liquid level of insulativity liquid closes on the radially cut-off rule of annular coplanar electric capacity gauge head B, the now input using the coplanar electric capacity gauge head of annular A as capacitance measurement unit, the sensitivity that can improve dip measuring device, makes measurement result more accurate.In like manner, when pitch angle 0 ° and ± 90 ° near time, the liquid level of insulativity liquid closes on the radially cut-off rule of annular coplanar electric capacity gauge head A, now the input using the coplanar electric capacity gauge head of annular B as capacitance measurement unit, also can reach identical effect.
Claims (4)
1. the nested pole plate of the paired quartern ring-circle formula inclination angle measurement method that is staggeredly placed in opposite directions, 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 the radially quartern of outer circle annular metal sheet, obtain four parts of quadrant annular metal sheets, described every a quadrant annular metal sheet forms electric capacity with circular metal plate respectively, and a described circular metal plate and four parts of quadrant annular metal sheet combinations obtain annular coplanar electric capacity gauge head;
(2), two coplanar electric capacity gauge heads of above-mentioned annular are dipped vertically in insulativity liquid, two coaxial placements in opposite directions of the coplanar electric capacity gauge head of annular, and the quadrant annular metal sheet of two coplanar electric capacity gauge heads of annular is interspersed, the liquid level of insulativity liquid is by the center of two coplanar electric capacity gauge heads of annular, the capacitor's capacity that every a quadrant ring sheet metal and circular metal plate form is by the specific inductive capacity of air, the specific inductive capacity of insulativity liquid, separately 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 jointly determine,
(3) when, the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, its inclination angle changes, the liquid level of insulativity liquid keeps level, the relative position of two coplanar electric capacity gauge heads 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 quadrant annular metal sheet and circular metal plate formation, try to achieve inclination angle value;
(4), the coplanar electric capacity gauge head of above-mentioned two annulars carries out circumference rotation along center, when insulativity liquid levels is closed on the radially cut-off rule of the coplanar electric capacity gauge head of arbitrary annular, get the result of calculation of another annular coplanar electric capacity gauge head gained as final inclination angle result of calculation.
2. the nested pole plate of the paired quartern ring-circle formula dip measuring device that is staggeredly placed in opposite directions, comprise capacitance measurement unit (28) and inclination angle computing unit (29), described capacitance measurement unit (28) is connected with inclination angle computing unit (29), it is characterized in that: described device also comprises sensor unit (27), the structure of described sensor unit (27) is: at two ends, two openends of opening-like cylindrical container (15) seal respectively two round insulation substrates of assembling (7,14), is positioned on the inboard face of two round insulation substrates (7,14) equipped two the coplanar electric capacity gauge head of annular A, B (1,8) respectively in cylindrical container (15) chamber, the coplanar electric capacity gauge head of described annular A (1) is made up of a circular metal plate a (2) and four quadrant annular metal sheet b, c, d, e (3,4,5,6), wherein four quadrant annular metal sheet b, c, d, e (3,4,5,6) are configured in a circular metal plate a (2) outside, and four quadrant annular metal sheet b, c, d, e (3,4,5,6) are coplanar concentric with a circular metal plate a (2), and four 1/4th sheet metal b, c, d, e (3,4,5,6) are uniformly distributed circumferentially, the coplanar electric capacity gauge head of described annular B (8) is by a circular metal plate f (9) and four quadrant annular metal sheet g, h, i, j (10, 11, 12, 13) form, wherein four quadrant annular metal sheet g, h, i, j (10, 11, 12, 13) be configured in a circular metal plate f (9) outside, and four quadrant annular metal sheet g, h, i, j (10, 11, 12, 13) coplanar concentric with a circular metal plate f (9), four quadrant annular metal sheet g, h, i, j (10, 11, 12, 13) be uniformly distributed circumferentially, four quadrant annular metal sheet g, h, i, the j (10,11,12,13) of four quadrant annular metal sheet b, c, d, e (3,4,5,6) and the annular coplanar electric capacity gauge head B (8) of the coplanar electric capacity gauge head of described annular A (1) are interspersed, ten current potential lead-in wires (17,18,19,20,21,22,23,24,25,26) are connected circular metal plate a (2), four quadrant annular metal sheet b, c, d, e (3,4,5,6) and circular metal plate f (9), four quadrant annular metal sheet g, h, i, j (10,11,12,13) respectively successively with the input end of capacitance measurement unit (28), described cylindrical container (15) is horizontal, and in described cylindrical container (15), the insulativity liquid (16) that accounts for cylindrical container (15) volume 1/2nd is injected in sealing.
3. the nested pole plate of the paired quartern ring-circle according to claim 2 formula dip measuring device that is staggeredly placed in opposite directions, is characterized in that: described round insulation substrate (7,14) is made up of resin glass fiber material.
4. the nested pole plate of the paired quartern ring-circle according to claim 2 formula dip measuring device that is staggeredly placed in opposite directions, is characterized in that: described insulativity liquid (16) is the liquid by one or more compositions combinations in the ethers of the ketone of the alcohols of methyl alcohol, ethanol, isopropyl alcohol, acetone, butanone, diglycol monotertiary butyl ether.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179173.4A CN104019797B (en) | 2014-04-28 | 2014-04-28 | The nested pole plate of paired quartering ring-circle is staggeredly placed formula inclination angle measurement method and device in opposite directions |
| 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 |
| 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179173.4A CN104019797B (en) | 2014-04-28 | 2014-04-28 | The nested pole plate of paired quartering ring-circle is staggeredly placed formula inclination angle measurement method and device in opposite directions |
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| CN104019797A true CN104019797A (en) | 2014-09-03 |
| CN104019797B CN104019797B (en) | 2016-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN105450951A (en) * | 2014-09-30 | 2016-03-30 | 深圳Tcl新技术有限公司 | Television and capacitance level meter |
| CN105737801A (en) * | 2016-04-19 | 2016-07-06 | 苏州宏奇锐自动化有限公司 | Automatic level detection structure |
| CN106289173A (en) * | 2016-07-18 | 2017-01-04 | 广州吉欧光学科技有限公司 | A kind of annular electrode double-shaft tilt angle sensor |
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| DE3912444A1 (en) * | 1989-04-15 | 1990-10-18 | Gerd Reime | Inclination angle measurement device - has two or more liquid capacitors, each with capacitance transducer |
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3912444A1 (en) * | 1989-04-15 | 1990-10-18 | Gerd Reime | Inclination angle measurement device - has two or more liquid capacitors, each with capacitance transducer |
| 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 |
| CN2733311Y (en) * | 2004-10-26 | 2005-10-12 | 辽宁工程技术大学 | Capacitance-type inclination angle sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165316A1 (en) * | 2014-04-28 | 2015-11-05 | 哈尔滨工业大学 | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| US10145683B2 (en) | 2014-04-28 | 2018-12-04 | Harbin Institute Of Technology | Method and device for measuring dip angle of oppositely crossly placed paired quartered ring-quartered circle nested polar plates |
| CN105450951A (en) * | 2014-09-30 | 2016-03-30 | 深圳Tcl新技术有限公司 | Television and capacitance level meter |
| CN105737801A (en) * | 2016-04-19 | 2016-07-06 | 苏州宏奇锐自动化有限公司 | Automatic level detection structure |
| CN106289173A (en) * | 2016-07-18 | 2017-01-04 | 广州吉欧光学科技有限公司 | A kind of annular electrode double-shaft tilt angle sensor |
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