CN203298764U - Tilt angle sensor - Google Patents
Tilt angle sensor Download PDFInfo
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- CN203298764U CN203298764U CN2013203186291U CN201320318629U CN203298764U CN 203298764 U CN203298764 U CN 203298764U CN 2013203186291 U CN2013203186291 U CN 2013203186291U CN 201320318629 U CN201320318629 U CN 201320318629U CN 203298764 U CN203298764 U CN 203298764U
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- 239000003990 capacitor Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 239000003350 kerosene Substances 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model relates to a tilt angle sensor, in particular to a capacitive tilt angle sensor, and belongs to the technical field of testing. A hollow and square casing body is arranged on a base; a left semi-circular capacitance plate and a right semi-circular capacitance plate are arranged on one side wall inside the casing body and combined to form a circular capacitance plate; a support rotation shaft is arranged on the inner wall, opposite to the round capacitance plate, of the casing body on the other side; and a movable semi-circular capacitance plate is movably connected with the support rotation shaft. The tile angle sensor is simple in structure and low in cost; the differential design is adopted, so that the sensitivity is high; a larger practical value is achieved in the engineering field; and the capacitance is relative to dielectric constants of different media of polar plates, so that the sensor can measure tilt angles in a liquid such as kerosene or in other medium environment after the dielectric constants of the media are known, and has no strict requirement for the environment where the system is located.
Description
Technical field
The utility model patent relates to a kind of obliquity sensor, a kind of capacitance-type inclination angle sensor particularly, and measurement range is 0 ~ ± 90 °, belongs to technical field of measurement and test.
Background technology
Obliquity sensor in being usually used in commercial production and scientific research the surveying work system with respect to the inclination angle of reference field.From on principle of work, being divided into " solid pendulum ", " liquid pendulum ", " gas pendulum " three kinds of obliquity sensors.
Solid pendulum, liquid pendulum and gas pendulum obliquity sensor, they have his own strong points.In gravity field, the sensitive-mass of solid pendulum is the pendulum quality, and the sensitive-mass of liquid pendulum is electrolytic solution, and the sensitive-mass of gas pendulum is gas.Gas is the unique movable body in seal chamber, and its quality is less, and the inertial force that produces when large impact or high overload is also very little, so have stronger anti-vibration or impact capacity.But gas motion is controlled comparatively complicated, and the obliquity sensor of gas pendulum is subject to the impact of several factors, therefore seldom uses.Solid pendulum obliquity sensor has clear and definite pendulum length and center of oscillation, and its mechanism is basically identical with acceleration transducer.Product type is more as the electromagnetism pendulum-type in practicality, and its product measurement range, precision and anti-overload ability are higher.The liquid pendulum obliquity sensor falls between, but system stability, in High Definition Systems, is applied comparatively extensive.
Above-mentioned sensor all is based on acceleration of gravity (namely being caused by terrestrial gravitation), is subjected to the impact of latitude and sea level elevation.Therefore sensor is different in the result of the region of different altitude height and latitude use measurement.
In addition, adopt in addition Hall element as magnet-sensitive element, the magnetic induction density that the variation by inclination angle causes changes to measure corresponding inclination angle.
Yet, the complex structure of this class obliquity sensor, expensive, easily be subject to the impact of environment, be not easy to use in existing system.
The utility model content
The utility model is for the general existing defect of existing obliquity sensor, and the utility model patent has proposed the sensor device at a kind of measurement based on capacitance principle inclination angle.
The utility model adopts following technical scheme:
A kind of obliquity sensor described in the utility model, comprise the left semicircle capacitor plate, right semi-circle capacitor plate, housing, support rotating axle, movable semicircle capacitor plate, base; Described housing is arranged on base, and housing is the square hollow body, and left semicircle capacitor plate and right semi-circle capacitor plate are arranged on the sidewall in housing, and left and right semicircle capacitor plate is combined into the circular capacitor pole plate; The opposite side housing is with respect on the inwall at the circle place of circular capacitor pole plate, arranging the support rotating axle, movable semicircle capacitor plate and support rotating axle active link.
Obliquity sensor described in the utility model, also comprise bolt, shock-proof spring, base plate; Described base is connected with base plate by bolt, and shock-proof spring is wrapped on the bolt section between base and base plate.
Obliquity sensor described in the utility model, be provided with gap between described left semicircle capacitor plate and right semi-circle capacitor plate.
Obliquity sensor described in the utility model, also comprise bubble; Described bubble is arranged on base.
Beneficial effect
The obliquity sensor that the utility model provides is simple in structure, and cost is low; Adopt differential and design, highly sensitive; Capacitance variations value and inclination angle
Linear, at engineering field, larger practical value is arranged.Because the specific inductive capacity of the size of electric capacity and the different medium between pole plate is relevant, so sensor described in the utility model also can be after knowing the specific inductive capacity of medium, in liquid as in kerosene or other media environments, carried out the measurement at inclination angle, to the requirement of the residing environment of system without harshness.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 obliquity sensor of the present utility model tilts
The time structural representation;
Fig. 4 is that figure is executed in concrete enforcement signal of the present utility model;
In figure: 1. left semicircle capacitor plate, 2. right semi-circle capacitor plate, 3. housing, 4. support rotating axle, 5. movable semicircle capacitor plate, 6. bolt, 7. shock-proof spring, 8. base plate, 9. spirit bubble.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in the figure: a kind of obliquity sensor comprises left semicircle capacitor plate 1, right semi-circle capacitor plate 2, housing 3, support rotating axle 4, movable semicircle capacitor plate 5, bolt 6, shock-proof spring 7, base plate 8, base; Described housing 3 is arranged on base, and housing 3 is the square hollow body, and left semicircle capacitor plate 1 is arranged on the sidewall in housing 3 with right semi-circle capacitor plate 2, between left semicircle capacitor plate 1 and right semi-circle capacitor plate 2, is provided with gap;
Left and right semicircle capacitor plate is combined into the circular capacitor pole plate; Opposite side housing 3 is with respect on the inwall at the circle place of circular capacitor pole plate, arranging support rotating axle 4, movable semicircle capacitor plate 5 and support rotating axle 4 active links.Base is connected with base plate 8 by bolt 6, and shock-proof spring 7 is wrapped on the bolt section between base and base plate 6; Bubble 9 is arranged on base.
When off position, the corresponding area of movable semicircle capacitor plate and left and right semicircle capacitor plate is identical, according to the computing formula of electric capacity
, left semicircle capacitor plate capacitance
With right semi-circle capacitor plate capacitance
Identical.In above-mentioned formula,
For the medium specific inductive capacity,
For movable semicircle capacitor plate and fixedly the semicircle capacitor plate distance between plates from.
During for horizontal level, the area that initial left semicircle capacitor plate (or right semi-circle capacitor plate) is corresponding with movable semicircle capacitor plate.
For angle of inclination, as shown in Figure 2, unit is degree.When system such as Fig. 2 situation, inclination angle is
The time, according to the electric capacity computing formula, the capacitance between the left semicircle capacitor plate increases
, the electric capacity between the right semi-circle capacitor plate reduces corresponding capacitance.
The left semicircle capacitor plate is drawn by wire, be designated as the A point; Movable semicircle capacitor plate is drawn by wire, be designated as the B point; The right semi-circle capacitor plate is drawn by wire, be designated as the C point.Draw wire by these three, access in existing test macro.This test macro comprises: sinusoidal excitation circuit, differential conversion electric bridge, amplifying circuit, precise rectification circuit and low-pass filter circuit.According to the output valve of filtering circuit, through converting, can directly obtain the changing value of the electric capacity that is caused by inclination angle
, measured inclination angle
.In formula,
For the sensitivity of this obliquity sensor under varying environment, mathematic(al) representation is
.
Embodiment 2: as shown in Figure 4, A, 2 of B directly access existing capacitance meter equipment, and during the system under test (SUT) run-off the straight, capacitance meter electric capacity changes.By the capacitance variations value that records
Multiply by the transducer sensitivity coefficient under this environment
, can draw the angle of inclination.
Embodiment 3: as shown in Figure 3, A, 2 of B directly access existing capacitance meter equipment, B, 2 of C directly access second capacitance meter equipment.During the system under test (SUT) run-off the straight, two capacitance meter electric capacity change.The capacitance variations value that every capacitance meter is recorded
Addition, namely
, then use
Multiply by the transducer sensitivity coefficient under environment
, can draw the angle of inclination.Scheme 3 adopts differential method, and with respect to scheme 2, sensitivity can improve 1 times.
Claims (4)
1. an obliquity sensor, is characterized in that: comprise left semicircle capacitor plate (1), right semi-circle capacitor plate (2), housing (3), support rotating axle (4), movable semicircle capacitor plate (5), base; Described housing (3) is arranged on base, and housing (3) is the square hollow body, and left semicircle capacitor plate (1) is arranged on the sidewall in housing (3) with right semi-circle capacitor plate (2), and left and right semicircle capacitor plate is combined into the circular capacitor pole plate; Opposite side housing (3) is with respect on the inwall at the circle place of circular capacitor pole plate, arranging support rotating axle (4), movable semicircle capacitor plate (5) and support rotating axle (4) active link.
2. obliquity sensor according to claim 1, is characterized in that: also comprise bolt (6), shock-proof spring (7), base plate (8); Described base is connected with base plate (8) by bolt (6), and shock-proof spring (7) is wrapped on the bolt section between base and base plate (6).
3. obliquity sensor according to claim 1, is characterized in that: between described left semicircle capacitor plate (1) and right semi-circle capacitor plate (2), be provided with gap.
4. obliquity sensor according to claim 1, is characterized in that: also comprise bubble (9); Described bubble (9) is arranged on base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203186291U CN203298764U (en) | 2013-06-04 | 2013-06-04 | Tilt angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203186291U CN203298764U (en) | 2013-06-04 | 2013-06-04 | Tilt angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203298764U true CN203298764U (en) | 2013-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203186291U Expired - Fee Related CN203298764U (en) | 2013-06-04 | 2013-06-04 | Tilt angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203298764U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292787A (en) * | 2013-06-04 | 2013-09-11 | 南京航空航天大学 | Tilt angle sensor |
| CN104034313A (en) * | 2014-04-28 | 2014-09-10 | 哈尔滨工业大学 | Concentric coplanar annular-trisectional annular-circular nested pole plate inclination angle measuring method and apparatus thereof |
| CN104121890A (en) * | 2014-08-16 | 2014-10-29 | 国家电网公司 | Adjustable level tester |
| CN105016208A (en) * | 2015-07-24 | 2015-11-04 | 上海海事大学 | Double-sling bridge crane swinging angle measuring device and method thereof |
| CN108871182A (en) * | 2018-06-05 | 2018-11-23 | 重庆电子工程职业学院 | A kind of motorcycle gradient sensor test device |
-
2013
- 2013-06-04 CN CN2013203186291U patent/CN203298764U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292787A (en) * | 2013-06-04 | 2013-09-11 | 南京航空航天大学 | Tilt angle sensor |
| CN104034313A (en) * | 2014-04-28 | 2014-09-10 | 哈尔滨工业大学 | Concentric coplanar annular-trisectional annular-circular nested pole plate inclination angle measuring method and apparatus thereof |
| CN104034313B (en) * | 2014-04-28 | 2016-08-24 | 哈尔滨工业大学 | The nested pole plate inclination angle measurement method of concentric coplanar ring-trisection ring-circle and device |
| CN104121890A (en) * | 2014-08-16 | 2014-10-29 | 国家电网公司 | Adjustable level tester |
| CN105016208A (en) * | 2015-07-24 | 2015-11-04 | 上海海事大学 | Double-sling bridge crane swinging angle measuring device and method thereof |
| CN108871182A (en) * | 2018-06-05 | 2018-11-23 | 重庆电子工程职业学院 | A kind of motorcycle gradient sensor test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20150604 |
|
| EXPY | Termination of patent right or utility model |