CN104006737B - The nested pole plate inclination angle measurement method of concentric coplanar ring-quartering ring-circle and device - Google Patents
The nested pole plate inclination angle measurement method of concentric coplanar ring-quartering ring-circle and device Download PDFInfo
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Abstract
The nested pole plate inclination angle measurement method of concentric coplanar ring quartering ring circle belongs to angle measurement technique with device, wherein the annular coplanar capacitance gauge head of sensor unit is by a circular metal plate, four quadrant annular metal sheets and a circular ring metal plate composition, six pieces of metallic plates are coplanar with one heart, four quadrant annular metal sheets are uniformly distributed circumferentially, each piece and circular metal plate, circular ring metal plate forms 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 six pieces of metallic plates is taken out and is connected with the input of capacitance measurement unit by current potential lead-in wire, capacitance measurement unit is connected with Dip countion unit；During container run-off the straight, annular coplanar capacitance gauge head changes with the relative position of insulating liquid, 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 that the surface utilizing liquid under static state remains level
Principle.Inside adds the container run-off the straight of liquid, stable after liquid level keep level, but the relative position of liquid and container
There occurs change.The electrical quantities caused by detecting this process changes, and calculates container relative to internal liquid surface
Angle, and then measure the inclination angle of container.
For the sensing mode at the inclination angle between detection container and its internal liquid surface added, electricity can be divided into
Resistive and the big class of electrostatic capacitive two.
Japan Patent 2001-13160 publication describes the correlation technique of resistance sensor, one end is closed
Being encapsulated into appropriate conductive liquid in cylindric canister, opening circular metal plate blocks.Pair of metal electrodes is passed through
Lead to and be fixed on plectane.When the receptacle is tilted, container changes with internal liquid surface angulation, so that metal
Electrode changes with the contact area of conductive liquid so that the resistance between canister and each metal electrode changes.Logical
Cross the change measuring its resistance value, just can detect the inclination angle of container.
But, metal electrode directly contacts with conductive liquid, causes the precipitation of the metal of electrode own, conductive liquid
The electrochemical reaction such as electrolysis, the precision of sensor and stability hardly result in long-term guarantee.
About static capacity type sensor, China's CN1668892A patent describes correlation technique.This sensor is just
It is the conductive liquid of 1/2 amount being encapsulated into internal volume in the tubular hermetic container of electric insulation system, in container parallel two
Placing tabular main electrode on individual side, its surface has silicon to aoxidize coverlay, serves as electrolyte.When the receptacle is tilted, container is with interior
The liquid surface angulation in portion changes so that the electric capacity between tabular main electrode and conductive liquid changes.
Thus, the change to its capacitance measures, to detect the size at the inclination angle of container.
But, in the case of this static capacity type sensor, the angle of inclination occurred when tubular hermetic container is excessive
Time, liquid biasing side within container and lose and the contacting of another main electrode, the most this sensor loses effect.By
In the limitation of principle, its range that can survey inclination angle is the most limited, and depends on the physical dimension within container.
Summary of the invention
The present invention is directed to directly the contacting of metal electrode and conductive liquid in the sensing mode at above-mentioned existing detection inclination angle,
Sensor stability hardly results in long-term guarantee, can survey the problem such as finiteness of inclination angle range, and the present invention proposes and devises
The nested pole plate inclination angle measurement method of concentric coplanar ring-quartering ring-circle and device, the insulating liquid used in this invention is avoided
The electrochemical reactions such as the precipitation of pole plate, annular coplanar capacitance structure in sensor unit achieves 360 degree of gamuts and measures.
The purpose of the present invention is achieved through the following technical solutions:
The nested pole plate inclination angle measurement method of a kind of concentric coplanar ring-quartering ring-circle, described method step is as follows:
(1), by a central circular metallic plate, transition circle annular metal sheet with outer circle annular metal sheet is coplanar puts with one heart
Put, and the transition circle annular metal sheet radially quartering, obtain four parts of quadrant annular metal sheets, described every a four points
One of circular ring metal plate form electric capacity respectively with central circular metallic plate, described every a quadrant annular metal sheet divides
Other and outer circle annular metal sheet forms electric capacity, described central circular metallic plate and outer circle annular metal sheet electrical grounding,
One central circular metallic plate, four parts of quadrant annular metal sheets obtain annular with the combination of outer circle annular metal sheet
Coplanar capacitance gauge head；
(2), being dipped vertically in insulating liquid by annular coplanar capacitance gauge head, the liquid level of insulating liquid is by annular
The center of coplanar capacitance gauge head, the capacitor's capacity that every a quadrant annular metal sheet and central circular metallic plate are formed with
And the capacitor's capacity that formed of every a quadrant annular metal sheet and outer circle annular metal sheet by the dielectric constant of air,
The dielectric constant of insulating liquid, respective pole plate exposed in atmosphere part to segment angle and be immersed in insulating liquid
Part to segment angle together decide on；
(3), above-mentioned annular coplanar capacitance gauge head carry out along center circumference rotate time, its inclination angle changes, insulating properties liquid
The liquid level of body keeps level, annular coplanar capacitance gauge head to change with the relative position of insulating liquid, each pole plate exposed
In air part to segment angle and be immersed in insulating liquid part to segment angle change, measure above-mentioned four
Capacitor's capacity that/mono-circular ring metal plate and central circular metallic plate are formed and above-mentioned quadrant annular metal sheet
With the change of the capacitor's capacity that outer circle annular metal sheet is formed, try to achieve inclination value.
The nested pole plate dip measuring device of a kind of concentric coplanar ring-quartering ring-circle, including capacitance measurement unit and inclination angle
Computing unit, described capacitance measurement unit is connected with Dip countion unit；Described device also includes sensor unit, described sensing
The structure of device unit is: the opening of the most opening-like cylindrical container seals the circular insulated substrate of assembling, at cylinder
Equipped annular coplanar capacitance gauge head it is positioned on face, round insulation substrate inboard in body container chamber；Described annular coplanar capacitance gauge head by
One circular metal plate, four quadrant annular metal sheets and a circular ring metal plate are constituted, wherein four four/
One circular ring metal plate is arranged in outside a circular metal plate, a circular ring metal plate is inboard, and four quadrants
Annular metal sheet and a circular metal plate, a circular ring metal plate are coplanar concentric, four quadrant annular metal sheets
It is uniformly distributed circumferentially；Six roots of sensation current potential lead-in wire the most respectively by circular metal plate, four quadrant annular metal sheets, one
Circular ring metal plate is connected with the input of capacitance measurement unit；Described cylindrical container is horizontal, at described cylindrical container
Interior sealing injection accounts for the insulating liquid of cylindrical container volume 1/2nd.
The invention have the characteristics that and good result:
(1) compared with resistance-type dip measuring device, it is insulating liquid due to contact with electrode pad, it is to avoid pole
The electrochemical reactions such as the precipitation of the metal of plate own, therefore, it is possible to the stability of long term maintenance sensor and reliability.
(2) compared with electrostatic capacitive dip measuring device, due to horizontal container can along central axis 360 degree rotation,
The capacitance of output all the time with inclination angle existence function relation, therefore measure scope unrestricted, there are 360 degree of gamuts and measure
Feature.
(3) outermost circular ring metal plate and central circular metallic plate electrical grounding participate in capacitance calculation is of equal value
In increasing the area of central circular metallic plate, improve the sensitivity of measurement of dip angle, simultaneously to four parts of quadrant annulars
Metallic plate serves current potential protective effect, decreases the interference of outer bound pair quadrant annular metal sheet so that measurement result
More accurate.
Accompanying drawing explanation
Fig. 1 is the profile perspective of the sensor unit of the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle
Figure
Fig. 2 be the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle sensor unit in annular coplanar
The principle schematic of electric capacity gauge head
Fig. 3 be the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle sensor unit in annular coplanar
The front view of electric capacity gauge head
Fig. 4 be the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle sensor unit in annular coplanar
Explanatory diagram when electric capacity gauge head tilts
Fig. 5 is the overall structure schematic diagram of the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle
Piece number explanation in figure: 1 annular coplanar capacitance gauge head, 2 circular metal plates, 3,4,5,6 quadrant endless metals
Plate, 7 circular ring metal plates, 8 round insulation substrates, 9 cylindrical containers, 10 insulating liquid, 11,12,13,14,15,16 current potentials
Lead-in wire, 17 sensor units, 18 capacitance measurement unit, 19 Dip countion unit.
Detailed description of the invention
Below in conjunction with the accompanying drawings the embodiment of the present invention is described in detail.
The nested pole plate dip measuring device of a kind of concentric coplanar ring-quartering ring-circle, including sensor unit 17, electric capacity
Measuring unit 18 and Dip countion unit 19, be illustrated in figure 5 the overall structure schematic diagram of dip measuring device.
The perspective physical form view of the sensor unit of dip measuring device shown in Fig. 1, the structure of described sensor unit 17
It is: the opening of the most opening-like cylindrical container 9 seals the circular insulated substrate 8 of assembling, at cylindrical container 9 intracavity
It is positioned at equipped annular coplanar capacitance gauge head 1 on the inboard face of round insulation substrate 8；Described annular coplanar capacitance gauge head 1 is by a circle
Shape metallic plate 3,4,5,6 and circular ring metal plate 7 of 2, four quadrant annular metal sheets is constituted, wherein four four points
One of circular ring metal plate 3,4,5,6 be arranged in outside a circular metal plate 2, a circular ring metal plate 7 inboard, and four
2, circular ring metal plate 7 of quadrant annular metal sheet 3,4,5,6 and a circular metal plate is coplanar concentric, four four
/ mono-circular ring metal plate 3,4,5,6 is uniformly distributed circumferentially；Six roots of sensation current potential lead-in wire 11,12,13,14,15,16 is distinguished successively
By circular metal plate 2, four quadrant annular metal sheets 3,4,5,6, circular ring metal plate 7 and a capacitance measurement unit
The input of 18 connects；Described cylindrical container 9, in horizontal, seal injection in described cylindrical container 9 and accounts for cylindrical container 9
The insulating liquid 10 of volume 1/2nd.
Described round insulation substrate 8 is made up of resin glass fiber material.
Described insulating liquid 10 is by methanol, ethanol, the alcohols of isopropanol, acetone, the ketone of butanone, diglycol monotertiary
One or more in the ethers of butyl ether become the liquid of subassembly.
The nested pole plate inclination angle measurement method of a kind of concentric coplanar ring-quartering ring-circle, the method step is as follows:
(1) by a central circular metallic plate, transition circle annular metal sheet with outer circle annular metal sheet is coplanar puts with one heart
Put, and the transition circle annular metal sheet radially quartering, obtain four parts of quadrant annular metal sheets, described every a four points
One of circular ring metal plate form electric capacity respectively with central circular metallic plate, described every a quadrant annular metal sheet divides
Other and outer circle annular metal sheet forms electric capacity, described central circular metallic plate and outer circle annular metal sheet electrical grounding,
One central circular metallic plate, four parts of quadrant annular metal sheets obtain annular with the combination of outer circle annular metal sheet
Coplanar capacitance gauge head.
Referring to the drawings 2, between the metallic plate of annular coplanar capacitance gauge head, electric lines of force is uniformly distributed along metallic plate, can approximate with half
Circular arc line replaces.Solution formula according to single coplanar capacitance, it is known that annular coplanar capacitance becomes with dielectric dielectric constant
Proportional relation, can be represented by the formula.
C=K ε
(2) being dipped vertically in insulating liquid by annular coplanar capacitance gauge head, the liquid level of insulating liquid is by annular
The center of coplanar capacitance gauge head, the capacitor's capacity that every a quadrant annular metal sheet and central circular metallic plate are formed with
And the capacitor's capacity that formed of every a quadrant annular metal sheet and outer circle annular metal sheet by the dielectric constant of air,
The dielectric constant of insulating liquid, respective pole plate exposed in atmosphere part to segment angle and be immersed in insulating liquid
Part to segment angle together decide on.
Fig. 3 be inclination angle sensing device sensor unit in annular coplanar capacitance gauge head front view, 2,3 shapes of metallic plate
Electric capacity that electric capacity that the electric capacity that becomes, the electric capacity that formed of metallic plate 2,4, metallic plate 2,5 are formed, metallic plate 2,6 are formed, gold
Belong to the electric capacity that formed of plate 3,7, electric capacity that electric capacity that metallic plate 4,7 is formed, metallic plate 5,7 are formed and metallic plate 6,7
The electric capacity formed can represent with following formula respectively.
(3), when above-mentioned annular coplanar capacitance gauge head carries out circumference rotation along center, its inclination angle changes, insulating liquid
Liquid level keep level, annular coplanar capacitance gauge head change with the relative position of insulating liquid, each pole plate is exposed at sky
In gas part to segment angle and be immersed in insulating liquid part to segment angle change.
Fig. 4 illustrates explanatory diagram when annular coplanar capacitance gauge head tilts.Electric capacity that now metallic plate 2,3 is formed, metal
Electric capacity, metallic plate 3,7 that electric capacity that electric capacity that plate 2,4 is formed, metallic plate 2,5 are formed, metallic plate 2,6 are formed are formed
The electric capacity that formed of electric capacity, the electric capacity that formed of the electric capacity that formed of metallic plate 4,7, metallic plate 5,7 and metallic plate 6,7 divide
It is not:
Due to metallic plate 2 and metallic plate 7 electrical grounding, the then electric capacity that metallic plate 2,3 is formed and 3,7 shapes of metallic plate
The electric capacity become is parallel relationship, and the electric capacity that the electric capacity that metallic plate 2,4 is formed and metallic plate 4,7 are formed is parallel relationship, gold
Belonging to the electric capacity that the electric capacity that formed of plate 2,5 and metallic plate 5,7 formed is parallel relationship, the electric capacity that metallic plate 2,6 is formed with
The electric capacity that metallic plate 6,7 is formed is parallel relationship, can obtain above formula combination summation:
Above formula combination is made difference can obtain:
And then the solution formula trying to achieve inclination angle is:
By capacitance measurement unit and Dip countion unit, the signal obtained is compared process, i.e. can get inclination angle
Output.
Claims (4)
1. the nested pole plate inclination angle measurement method of concentric coplanar ring-quartering ring-circle, it is characterised in that: described method step
As follows:
(1), by coplanar to a central circular metallic plate, transition circle annular metal sheet and outer circle annular metal sheet concentric placement,
And the transition circle annular metal sheet radially quartering, obtain four parts of quadrant annular metal sheets, every a quadrant
Annular metal sheet forms electric capacity respectively with central circular metallic plate, every a quadrant annular metal sheet respectively with outer circle
Annular metal sheet forms electric capacity, described central circular metallic plate and outer circle annular metal sheet electrical grounding, in one
Heart circular metal plate, four parts of quadrant annular metal sheets obtain annular coplanar capacitance with the combination of outer circle annular metal sheet and survey
Head；
(2), being dipped vertically in insulating liquid by annular coplanar capacitance gauge head, the liquid level of insulating liquid is coplanar by annular
The center of electric capacity gauge head, capacitor's capacity that every a quadrant annular metal sheet is formed with central circular metallic plate and every
The capacitor's capacity that a quadrant annular metal sheet and outer circle annular metal sheet are formed is by the dielectric constant of air, insulation
Property the exposed part in atmosphere of the dielectric constant of liquid, respective pole plate to segment angle and be immersed in part in insulating liquid
To segment angle together decide on；
(3), above-mentioned annular coplanar capacitance gauge head carry out along center circumference rotate time, its inclination angle changes, insulating liquid
Liquid level keeps level, annular coplanar capacitance gauge head to change with the relative position of insulating liquid, and each pole plate is exposed at air
Middle part to segment angle and be immersed in insulating liquid part to segment angle change, measure above-mentioned four/
One circular ring metal plate and the capacitor's capacity of central circular metallic plate formation and above-mentioned quadrant annular metal sheet are with outer
The capacitor's capacity that portion's circular ring metal plate is formed, tries to achieve inclination value.
2. the nested pole plate dip measuring device of concentric coplanar ring-quartering ring-circle, including capacitance measurement unit (18) with incline
Angle computing unit (19), described capacitance measurement unit (18) is connected with Dip countion unit (19)；It is characterized in that: described device
Also include that sensor unit (17), the structure of described sensor unit (17) are: the most opening-like cylindrical container (9)
Opening seal the circular insulated substrate of assembling (8), be positioned at the inboard face of round insulation substrate (8) at cylindrical container (9) intracavity
Upper equipped annular coplanar capacitance gauge head (1)；Described annular coplanar capacitance gauge head (1) by a circular metal plate (2), four four points
One of circular ring metal plate (3,4,5,6) and circular ring metal plate (7) constitute, wherein four quadrant endless metals
Plate (3,4,5,6) is arranged in circular metal plate (2) outside, circular ring metal plate (7) inboard, and four 1/4th
Circular ring metal plate (3,4,5,6) and a circular metal plate (2), a circular ring metal plate (7) are coplanar concentric, four four points
One of circular ring metal plate (3,4,5,6) be uniformly distributed circumferentially；Six roots of sensation current potential lead-in wire (11,12,13,14,15,16) divides successively
Not by circular metal plate (2), four quadrant annular metal sheets (3,4,5,6), a circular ring metal plate (7) and electric capacity
The input of measuring unit (18) connects；Described cylindrical container (9), in horizontal, seals note in described cylindrical container (9)
Enter to account for the insulating liquid (10) of cylindrical container (9) volume 1/2nd.
The nested pole plate dip measuring device of concentric coplanar ring-quartering ring the most according to claim 2-circle, its feature exists
In: described round insulation substrate (8) is made up of resin glass fiber material.
The nested pole plate dip measuring device of concentric coplanar ring-quartering ring the most according to claim 2-circle, its feature exists
In: described insulating liquid (10) is by the one in methanol, ethanol, isopropanol, acetone, butanone, diethylene glycol monobutyl ehter
Or the liquid of Multiple components combination.
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|---|---|---|---|---|
| US3906471A (en) * | 1973-09-12 | 1975-09-16 | Sun Oil Co Pennsylvania | High side meter |
| CN2114139U (en) * | 1992-01-17 | 1992-08-26 | 国营华川机械厂 | New-type capacity electronic level angle-measuring instrument |
| CN2548116Y (en) * | 2002-06-13 | 2003-04-30 | 贵州工业大学 | Capacitor-type angle-incidence sensitive device structure |
| CN2733311Y (en) * | 2004-10-26 | 2005-10-12 | 辽宁工程技术大学 | Capacitance-type inclination angle sensor |
| CN103292787A (en) * | 2013-06-04 | 2013-09-11 | 南京航空航天大学 | Tilt angle sensor |
| CN203274744U (en) * | 2013-06-16 | 2013-11-06 | 衡水华锘光电科技有限公司 | Full-angle electrolyte inclination sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4350600B2 (en) * | 2003-10-31 | 2009-10-21 | 株式会社東海理化電機製作所 | Capacitive tilt angle sensor |
-
2014
- 2014-04-28 CN CN201410179312.3A patent/CN104006737B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906471A (en) * | 1973-09-12 | 1975-09-16 | Sun Oil Co Pennsylvania | High side meter |
| CN2114139U (en) * | 1992-01-17 | 1992-08-26 | 国营华川机械厂 | New-type capacity electronic level angle-measuring instrument |
| CN2548116Y (en) * | 2002-06-13 | 2003-04-30 | 贵州工业大学 | Capacitor-type angle-incidence sensitive device structure |
| CN2733311Y (en) * | 2004-10-26 | 2005-10-12 | 辽宁工程技术大学 | Capacitance-type inclination angle sensor |
| CN103292787A (en) * | 2013-06-04 | 2013-09-11 | 南京航空航天大学 | Tilt angle sensor |
| CN203274744U (en) * | 2013-06-16 | 2013-11-06 | 衡水华锘光电科技有限公司 | Full-angle electrolyte inclination sensor |
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