CN203758549U - Capacitive sensor used for simultaneously obtaining inclination angle and liquid level of container - Google Patents
Capacitive sensor used for simultaneously obtaining inclination angle and liquid level of container Download PDFInfo
- Publication number
- CN203758549U CN203758549U CN201420132024.8U CN201420132024U CN203758549U CN 203758549 U CN203758549 U CN 203758549U CN 201420132024 U CN201420132024 U CN 201420132024U CN 203758549 U CN203758549 U CN 203758549U
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- insulation tube
- electrodes
- type sensor
- capacitance type
- cube
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- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 28
- 238000005259 measurement Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a capacitive sensor used for simultaneously obtaining an inclination angle and a liquid level of a container, comprising four electrodes with the same specification, a metal shielding layer (5), an insulating tube (6) with open upper and lower orifices, and a capacitance measuring apparatus; wherein the metal shielding layer (5) is tightly adhered on an outer wall of the insulating tube (6), the shapes of the four electrodes are adapted to an inner wall of the insulating tube (6), the four electrodes are respectively tightly adhered on the inner wall of the insulating tube (6), a narrow and long bar-shaped gap of which an extension direction is parallel to an axial direction of the insulating tube (6) is provided between the adjacent two electrodes, upper and lower edges of the four electrodes are parallel and level to the upper and lower orifices of the insulating tube (6), the capacitance measuring apparatus measures and obtains the capacitance between the adjacent two electrodes. The capacitive sensor of the utility model has the advantages of simple structure, low manufacture and maintenance cost, high reliability, and high precision.
Description
Technical field
The utility model relates to a kind of for obtain the capacitance type sensor of container inclination angle and liquid level simultaneously.
Background technology
Obliquity sensor and liquid level sensor are widely used in various fields, in general application, two parameters of inclination angle and liquid level are all respectively by these two sensor independent measurements, in the time that needs detect liquid level and inclination angle simultaneously, there is the defects such as cost performance is low, maintenance cost is high in existing method.In addition, it is all the technology forming towards constant vessel that current most of liquid level detects, in concrete enforcement, there are float level meter, ultrasonic level gage, fiber optic liquid height meter, differential pressure type level gauge, cylindrical two electrode capacitance formula liquid level gauges etc., a major defect of these methods is: in the time that container is in the time dynamically immediately tilting and among upright, just can not accurately detect, now in order Measurement accuracy liquid level to need the extra tilt detection for container and error compensation.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of for obtain the capacitance type sensor of container inclination angle and liquid level simultaneously, to overcome the problem that prior art cost performance is low, maintenance cost is high.
Solve the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:
For obtain a capacitance type sensor for container inclination angle and liquid level simultaneously, it is characterized in that: described capacitance type sensor comprises insulation tube and the electric capacity measuring device that electrode, metal screen layer, the upper and lower mouth of pipe of four same sizes is unlimited; Described metal screen layer close attachment is in the outside wall surface of insulation tube, the shape of described four cube electrodes adapts to the internal face of insulation tube, this four cube electrode is closely mounted on respectively on the internal face of insulation tube, between adjacent two cube electrodes, leave bearing of trend and be parallel to the axial long and narrow bar shaped gap of insulation tube, and the upper and lower edge of this four cube electrode flushes in the upper and lower mouth of pipe of described insulation tube, described electric capacity measuring measurement device obtains the electric capacity between adjacent two cube electrodes.
As a kind of embodiment of the present utility model, described insulation tube is cylindrical tube.
As a kind of embodiment of the present utility model, described insulation tube is cuboid pipe.
As a kind of embodiment of the present utility model, described insulation tube is plastic tube.
As a kind of embodiment of the present utility model, the long and narrow bar shaped gap width between described adjacent two cube electrodes is 0.9-1.2mm.
As preferred implementation of the present utility model, the long and narrow bar shaped gap width between described adjacent two cube electrodes is 1.0mm.
Compared with prior art, the utlity model has following beneficial effect:
The utility model is by installing the electrode of four same sizes by ad hoc fashion, detect again the electric capacity between adjacent two cube electrodes, be subject to the dynamic inclination of xylometer and the redundant information of the liquid level of tested liquid wherein to obtain to be enough to give expression to, realized the electric capacity four parameters detections to inclination angle and liquid level.The utlity model has simple in structurely, manufacture, maintenance cost is low, information redundancy is high, reliability, the advantage that precision is high.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is plan structure schematic diagram of the present utility model;
Fig. 2 is side-looking structural representation of the present utility model;
Fig. 3 is the schematic diagram that the utility model carries out vergence direction judgement;
Fig. 4 is the schematic diagram that the utility model carries out incline measurement;
In figure: 1. electrode 1; 2. electrode 2; 3. electrode 3; 4. electrode 4; 5. metal screen layer; 6. insulation tube;
C
1. the electric capacity between electrode 1 and electrode 2; C
2. the electric capacity between electrode 2 and electrode 4;
C
3. the electric capacity between electrode 3 and electrode 4; C
4. the electric capacity between electrode 1 and electrode 3.
Embodiment
Embodiment mono-
As illustrated in fig. 1 and 2, the utility model embodiment mono-for obtain the capacitance type sensor of container inclination angle and liquid level simultaneously, comprise unlimited insulation tube 6 and the electric capacity measuring device of electrode, metal screen layer 5, the upper and lower mouth of pipe of four same sizes; Insulation tube 6 is cylindrical plastic pipe, metal screen layer 5 close attachment are in the outside wall surface of insulation tube 6, the shape of four cube electrodes adapts to the internal face of insulation tube 6, this four cube electrode is closely mounted on respectively on the internal face of insulation tube 6, between adjacent two cube electrodes, leave bearing of trend and be parallel to the axial long and narrow bar shaped gap of insulation tube 6, and the upper and lower edge of this four cube electrode flushes in the upper and lower mouth of pipe of insulation tube 6, electric capacity measuring measurement device obtains the electric capacity between adjacent two cube electrodes.Wherein, the long and narrow bar shaped gap width between adjacent two cube electrodes is 1.0mm.
The above-mentioned electric capacity getting by capacitance type sensor of the present utility model, can have enough redundant informations gives expression to and is subject to the dynamic inclination of xylometer and the liquid level of tested liquid wherein, it can calculate by existing algorithm, and principle is described as follows:
In the time that container remains static, 4 capacitive transducers all can independent measurement container in liquid level, also can compare their measured value and carry out liquid level in comprehensive evaluation container, improved metrical information redundancy, reliability and robustness;
In the time that container is kept in motion (time and the time of inclination and upright), because 4 capacitive transducers provide enough information redundancies, the measurement electric capacity that can merge 4 capacitive transducers is evaluated container lean direction and inclination angle and the height of liquid level wherein.
Capacitance type sensor of the present utility model put into and is subject to xylometer, make tested liquid to flow into after the tube chamber of insulation tube 6, the change of the electrolyte specific inductive capacity between the capacitive transducer pole plate that four electrodes 1,2,3 and 4 form has between two caused the variation of electric capacity between two-plate, the liquid level existence function relation of the Changing Pattern of this electric capacity and fluid to be measured, thereby the liquid level information of fluid to be measured is detected, and the relation between them can be carried out matching with following polynomial expression.
In formula, L is the liquid level of fluid to be measured, C
1, C
2, C
3, C
4respectively the electric capacity between electrode 1 and 2, electrode 2 and 4, electrode 3 and 4, electrode 1 and 3, k
0, k is coefficient, can utilize various known liquid level L
i(i=0,1,2 ..., n) and corresponding measured capacitance values C
1i, C
2i, C
3i, (i=0,1,2 ..., the experimental data base regretional analysis between n) obtains.
The measurement at container lean direction and inclination angle as shown in Figure 3,4.First according to C
1, C
2, C
3, C
4between magnitude relationship judge the roughly direction of container lean, if C
1=C
3and C
2>C
4, container deflection due east; If C
1>C
3and C
2=C
4, the positive north of container deflection; If C
1=C
3and C
2<C
4, the positive west of container deflection; If C
1<C
3and C
2=C
4, container deflection due south.
If C
1>C
3and C
2>C
4, container deflection northeastward, concrete angle of inclination is east by north α, can obtain with reference to figure 4:
If C
1<C
3and C
2>C
4, container deflection southeastern direction, concrete angle of inclination is east by south
If C
1>C
3and C
2<C
4, container deflection northwest to, concrete angle of inclination is west by north
If C
1<C
3and C
2<C
4, container deflection southwestward, concrete angle of inclination is west by south
.
Embodiment bis-
The capacitance type sensor of the utility model embodiment bis-and embodiment mono-are basic identical, and their difference is: the long and narrow bar shaped gap width between adjacent two cube electrodes of embodiment bis-is 0.9mm.The principle of work of the present embodiment two is identical with embodiment mono-, does not repeat them here.
Embodiment tri-
The capacitance type sensor of the utility model embodiment tri-and embodiment mono-are basic identical, and their difference is: the long and narrow bar shaped gap width between adjacent two cube electrodes of embodiment tri-or two is 1.2mm.The principle of work of the present embodiment three is identical with embodiment mono-, does not repeat them here.
The utility model does not limit to and above-mentioned embodiment; according to foregoing; according to ordinary skill knowledge and the customary means of this area; do not departing under the above-mentioned basic fundamental thought of the utility model prerequisite; the utility model can also be made equivalent modifications, replacement or the change of other various ways, all drops among protection domain of the present utility model.For example, above-mentioned insulation tube 6 can be also cuboid pipe.
Claims (6)
1. for obtain a capacitance type sensor for container inclination angle and liquid level simultaneously, it is characterized in that: described capacitance type sensor comprises unlimited insulation tube (6) and the electric capacity measuring device of electrode, metal screen layer (5), the upper and lower mouth of pipe of four same sizes; Described metal screen layer (5) close attachment is in the outside wall surface of insulation tube (6), the shape of described four cube electrodes adapts to the internal face of insulation tube (6), this four cube electrode is closely mounted on respectively on the internal face of insulation tube (6), between adjacent two cube electrodes, leave bearing of trend and be parallel to the axial long and narrow bar shaped gap of insulation tube (6), and the upper and lower edge of this four cube electrode flushes in the upper and lower mouth of pipe of described insulation tube (6), described electric capacity measuring measurement device obtains the electric capacity between adjacent two cube electrodes.
2. capacitance type sensor according to claim 1, is characterized in that: described insulation tube (6) is cylindrical tube.
3. capacitance type sensor according to claim 1, is characterized in that: described insulation tube (6) is cuboid pipe.
4. according to the capacitance type sensor described in claims 1 to 3 any one, it is characterized in that: described insulation tube (6) is plastic tube.
5. according to the capacitance type sensor described in claims 1 to 3 any one, it is characterized in that: the long and narrow bar shaped gap width between described adjacent two cube electrodes is 0.9-1.2mm.
6. capacitance type sensor according to claim 5, is characterized in that: the long and narrow bar shaped gap width between described adjacent two cube electrodes is 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132024.8U CN203758549U (en) | 2014-03-21 | 2014-03-21 | Capacitive sensor used for simultaneously obtaining inclination angle and liquid level of container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420132024.8U CN203758549U (en) | 2014-03-21 | 2014-03-21 | Capacitive sensor used for simultaneously obtaining inclination angle and liquid level of container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758549U true CN203758549U (en) | 2014-08-06 |
Family
ID=51253805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420132024.8U Expired - Lifetime CN203758549U (en) | 2014-03-21 | 2014-03-21 | Capacitive sensor used for simultaneously obtaining inclination angle and liquid level of container |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203758549U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798426A (en) * | 2016-04-07 | 2016-07-27 | 湘潭大学 | Capacitive narrow-gap weld joint tracking sensor |
| CN107126088A (en) * | 2017-06-12 | 2017-09-05 | 浙江绍兴苏泊尔生活电器有限公司 | Heating container |
-
2014
- 2014-03-21 CN CN201420132024.8U patent/CN203758549U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798426A (en) * | 2016-04-07 | 2016-07-27 | 湘潭大学 | Capacitive narrow-gap weld joint tracking sensor |
| CN107126088A (en) * | 2017-06-12 | 2017-09-05 | 浙江绍兴苏泊尔生活电器有限公司 | Heating container |
| CN107126088B (en) * | 2017-06-12 | 2022-07-08 | 浙江绍兴苏泊尔生活电器有限公司 | Heating container |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
|
| CX01 | Expiry of patent term |