CN103913207A - High-precision variable-scan oil level measurement sensor with matrix capacitor - Google Patents
High-precision variable-scan oil level measurement sensor with matrix capacitor Download PDFInfo
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- CN103913207A CN103913207A CN201410110575.9A CN201410110575A CN103913207A CN 103913207 A CN103913207 A CN 103913207A CN 201410110575 A CN201410110575 A CN 201410110575A CN 103913207 A CN103913207 A CN 103913207A
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- electrode
- measurement sensor
- level measurement
- oil
- electric capacity
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- 238000005259 measurement Methods 0.000 title claims abstract description 23
- 239000011159 matrix material Substances 0.000 title claims abstract description 15
- 239000003990 capacitor Substances 0.000 title abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 2
- 235000009808 lpulo Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000004301 light adaptation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The invention provides a high-precision variable-scan oil level measurement sensor with a matrix capacitor and aims to solve the problems that the traditional oil level measurement sensor is low in precision and high in power consumption, has many mechanical parts, is troublesome to install and has large errors of measurement for different oils. The high-precision variable-scan oil level measurement sensor comprises an electrode pole, a signal processing device connected with the electrode pole, and an electrical box used for protecting the signal processing device. The electrode pole is connected with the electrical box through an electrode connector. The electrode pole comprises an inner electrode and an outer electrode. The inner electrode is connected with the outer electrode through an electrode support. The inner electrode comprises two or more metal plates and a support round bar; the metal plates are penetrated by the support round bar and are fixedly connected with the support round bar; each metal plate is provided with a lead; the leads are led out of the support round bar and used for the signal processing device to collect signals. The electrical box comprises a shell, an upper cover and a lower cover; the upper cover and the lower cover are arranged at the upper and lower ends of the shell; the upper and lower covers are fixedly connected with the shell.
Description
Technical field
The present invention relates to a kind of oil-level measurement sensor, relate in particular to a kind of high-precision change scanning of matrix electric capacity oil-level measurement sensor that adopts, belong to oil-level measurement field.
Background technology
At present, in oil-level measurement field, the product of different principle technology emerges in an endless stream, but all has following shortcoming: 1, and low precision, substantially in 5% left and right.2, power consumption is large, and electric current is not at tens milliamperes to more than 100 milliamperes etc.3, mechanical part is many, exists mechanical vibration to cause failure rate high.4, trouble is installed.5, the oil that can not identify different oil products causes the measuring result error of different oil products large, such as No. 97 gasoline and No. 0 diesel oil.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of high-precision change scanning of matrix electric capacity oil-level measurement sensor that adopts is provided, has solved that traditional oils position measuring sensor precision is low, power consumption is large, mechanical part is many, installed and bother and for the large problem of different oil product measuring error.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of high-precision change scanning of matrix electric capacity oil-level measurement sensor that adopts, comprise electrode stem, the signal processing apparatus being connected with electrode stem and for the protection of the electrical appliance kit of signal processing apparatus, described electrode stem is connected with described electrical appliance kit by electrode connecting parts, described electrode stem comprises interior electrode and external electrode, described interior electrode is connected with described external electrode by an electrode supporting, described interior electrode comprises two or more sheet metals and a support round rod, described sheet metal passes described support round rod and is fixedly connected with described support round rod, described each sheet metal is provided with a lead-in wire, described lead-in wire is drawn by support round rod, for signal processing apparatus collection signal.
Further, between described sheet metal, be provided with the distance of 0.1-1mm.
Further, described electrical appliance kit comprises housing, is positioned at upper cover and the lower cover at the upper and lower two ends of housing, and described upper cover and described lower cover are fixedly connected with described housing.
Further, cover on described and be provided with a signal display apparatus, described signal display apparatus is fixed on the one side of described upper cover, and passes described upper cover by wire and be connected with described signal processing apparatus.
Further, described housing lower end is provided with connection terminal.
Further, described connection terminal is water joint.
Further, between described electrode stem and described electrode connecting parts, be provided with one for fixing flange.
The invention has the beneficial effects as follows: the present invention adopts the oil-level measurement sensor of making of matrix electric capacity scanning technique, and structure comprises electrical appliance kit, electrode stem, flange, circuit, O-ring seal.The single electrode that wherein electrode stem discards tradition, adopt multi-electrode, utilize the method for scanning, integrated temperature height medium analysis judges current oil level, the method of utilizing segmentation to judge that the height method of liquid is analyzed liquid level than previous single hop improves in precision, and error reduces.Realize high-precision measurement, also reduced temperature and floated simultaneously; Utilize the principle of electric capacity scanning to measure liquid level, solved simultaneously in the time that the medium of liquid changes, can automatically adapt to the variation of different medium, can adapt to the liquid of different medium.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is external structure schematic diagram of the present invention;
Fig. 3 is the structural representation of electrode in the present invention.
Wherein, 1, electrode stem; 2, signal processing apparatus; 3, electrical appliance kit; 4, interior electrode; 5, external electrode; 6, electrode supporting; 7, sheet metal; 8, support round rod; 9, lead-in wire; 10, housing; 11, upper cover; 12, lower cover; 13, signal display apparatus; 14, flange; 15, connection terminal; 16, electrode connecting parts.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A kind of high-precision change scanning of matrix electric capacity oil-level measurement sensor that adopts, comprise electrode stem 1, the signal processing apparatus 2 being connected with electrode stem 1 and for the protection of the electrical appliance kit 3 of signal processing apparatus 2, described electrode stem 1 is connected with described electrical appliance kit 3 by electrode connecting parts 16, described electrode stem 1 comprises interior electrode 4 and external electrode 5, described interior electrode 4 is connected with described external electrode 5 by an electrode supporting 6, described interior electrode 4 comprises two or more sheet metal 7 and a support round rod 8, described sheet metal 7 passes described support round rod 8 and is fixedly connected with described support round rod 8, described each sheet metal 7 is provided with a lead-in wire 9, described lead-in wire 9 is drawn by support round rod 8, for signal processing apparatus 2 collection signals.
Between described sheet metal 7, be provided with the distance of 0.1-1mm.
Described electrical appliance kit 3 comprises housing 10, is positioned at upper cover 11 and the lower cover 12 at housing two ends Shang Xia 10, and described upper cover 11 and described lower cover 12 are fixedly connected with described housing 10.
Described upper cover 11 is provided with a signal display apparatus 13, and described signal display apparatus 13 is fixed on the one side of described upper cover 11, and passes described upper cover 11 by wire and be connected with described signal processing apparatus 2.
Described housing 10 lower ends are provided with connection terminal 15.
Described connection terminal 15 is water joint.
Between described electrode stem 1 and described electrode connecting parts, be provided with one for fixing flange 14.
Embodiments of the present invention are as follows:
Interior electrode 4 is made up of the sheet metal 7 of a support round rod 8 and N diverse location, sheet metal 7 lengths, and materials etc. are identical.Sheet metal 7 is evenly distributed in above support round rod 8, and the spacing between sheet metal 7 is 0.5 millimeter, and each sheet metal 7 is drawn by a lead-in wire 9, for signal processing apparatus 2 collection signals.
If the height of sheet metal 7 is
L1=L2............=LN，
The overall height of so interior electrode 4
L is total=L1+L2+............+LN;
We suppose that the aerial capacity of each section of sheet metal 7 is CxL, and the capacity that liquid level is submerged in liquid is completely CxH, in the time that measured medium is in the scope of a certain section, and its maximum variable quantity
Δx=CxH-CxL
The capacitance change Δ x of known a certain section, measures capacitor C x, and the length L of this section can obtain the height Lx of 7 immersion liquids of present segment sheet metal so according to change of scale:
Lx=[L*（Cx-CxL）]/Δx;
According to above analytical calculation, obtain a certain section of sheet metal 7 by liquid-immersed height.
The height of known first paragraph is L1, and the height of second segment is L2, is followed successively by L3, L4 ... ... LN.
If when liquid-immersed first paragraph, the height of first paragraph is L1x, when submergence second segment, the height of second segment is L2x, and when the 3rd section of submergence, the height of the 3rd section is L3x, is followed successively by L4x ... LNx.
Known to first paragraph is when liquid-immersed, when other sections are air, obtain L total,
L is total=L1x;
When second segment is when liquid-immersed, first paragraph sheet metal 7 must all be immersed in liquid, and L is always so,
L is total=L1+L2x;
When the 3rd section when liquid-immersed, first paragraph, second segment sheet metal 7 must all be immersed in liquid, and L is always so,
L is total=L1+L2+L3x;
When the 4th section when liquid-immersed, first paragraph, second segment, the 3rd section of sheet metal 7 must all be immersed in liquid, and L is always so,
L is total=L1+L2+L3+L4x;
The like: in the time of liquid-immersed N section,
L is total=L1+L2+L3+L4.........+LNx;
The method of utilizing like this segmentation to judge that the height method of liquid is analyzed liquid level than previous single hop has improved original N doubly in precision, and the 1/N that error is original error, has realized high-precision measurement, has also reduced temperature and has floated simultaneously.
Utilize the principle of electric capacity scanning to measure liquid level, solved simultaneously in the time that the medium of liquid changes, can automatically adapt to the variation of different medium, principle is as follows:
Suppose that the aerial capacity of first paragraph sheet metal 7 is C1xL, the capacity that liquid level is submerged in liquid is completely C1xH, first paragraph height be L, when in the scope of measured medium at first paragraph, his variation than δ is so,
δ=(C1xH-C1xL)/L，
Suppose the N section electric capacity material of electrode, highly, width, length is all just the same, and the variation that can obtain so N section is more identical than all.According to this principle, in the time of media variations, his no-load voltage ratio also changes, and can calculate like this no-load voltage ratio of other sections according to the no-load voltage ratio of first paragraph, can extrapolate the height of liquid according to no-load voltage ratio, has so just realized the function of automatic adaptation different medium.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. one kind adopts the high-precision change scanning of matrix electric capacity oil-level measurement sensor, comprise electrode stem, the signal processing apparatus being connected with electrode stem and for the protection of the electrical appliance kit of signal processing apparatus, described electrode stem is connected with described electrical appliance kit by electrode connecting parts, it is characterized in that: described electrode stem comprises interior electrode and external electrode, described interior electrode is connected with described external electrode by an electrode supporting, described interior electrode comprises two or more sheet metals and a support round rod, described sheet metal passes described support round rod and is fixedly connected with described support round rod, described each sheet metal is provided with a lead-in wire, described lead-in wire is drawn by support round rod, for signal processing apparatus collection signal.
2. the high-precision change scanning of employing matrix electric capacity according to claim 1 oil-level measurement sensor, is characterized in that: the distance that is provided with 0.1-1mm between described sheet metal.
3. the high-precision change scanning of employing matrix electric capacity according to claim 1 oil-level measurement sensor, is characterized in that: described electrical appliance kit comprises housing, is positioned at upper cover and the lower cover at the upper and lower two ends of housing, and described upper cover and described lower cover are fixedly connected with described housing.
4. the high-precision change scanning of employing matrix electric capacity according to claim 3 oil-level measurement sensor, it is characterized in that: described housing upper end is provided with a signal display apparatus, described signal display apparatus passes described upper cover by wire and is connected with described signal processing apparatus.
5. the high-precision change scanning of employing matrix electric capacity according to claim 3 oil-level measurement sensor, is characterized in that: described housing lower end is provided with connection terminal.
6. the high-precision change scanning of employing matrix electric capacity according to claim 5 oil-level measurement sensor, is characterized in that: described connection terminal is water joint.
7. the high-precision change scanning of employing matrix electric capacity according to claim 1 oil-level measurement sensor, is characterized in that: between described electrode stem and described electrode connecting parts, be provided with one for fixing flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110575.9A CN103913207B (en) | 2014-03-24 | 2014-03-24 | High-precision variable-scan oil level measurement sensor with matrix capacitor |
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| CN201410110575.9A CN103913207B (en) | 2014-03-24 | 2014-03-24 | High-precision variable-scan oil level measurement sensor with matrix capacitor |
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| CN103913207A true CN103913207A (en) | 2014-07-09 |
| CN103913207B CN103913207B (en) | 2017-02-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486374A (en) * | 2016-01-18 | 2016-04-13 | 上海云鱼智能科技有限公司 | Static-dynamic-dual-mode level gage and level measuring method thereof |
| CN105526989A (en) * | 2016-01-18 | 2016-04-27 | 上海云鱼智能科技有限公司 | Attachment-preventing static mode charge level indicator assisting validation by mechanical action and measuring method of charge level indicator |
| CN105698899A (en) * | 2016-03-31 | 2016-06-22 | 上海云鱼智能科技有限公司 | Static-gesture dual-mode material level meter and measuring method thereof |
| CN107192425A (en) * | 2017-04-24 | 2017-09-22 | 河南菲普斯特仪器仪表有限公司 | A kind of liquid level emasuring device and application process of the adaptive range of sectional capacitance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105486374B (en) * | 2016-01-18 | 2019-01-04 | 上海云鱼智能科技有限公司 | Quiet dynamic bimodulus level-sensing device and its method for measuring material position |
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| CN103913207B (en) | 2017-02-22 |
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Address after: 450000 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 11 in Henan Province, the National University Science Park incubator incubator building No. 1 No. 408-418 Patentee after: Henan wisdom water Co., Ltd. Address before: 450000 Zhengzhou economic and Technological Development Zone, Henan Road, No. 1319 East Road, building 63-64, No. 4 Patentee before: Zhengzhou Keda Automatic Engineering Co., Ltd. |
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Address after: 450000 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 11 in Henan Province, the National University Science Park incubator incubator building No. 1 No. 408-418 Patentee after: Henan wisdom water affairs Limited by Share Ltd Address before: 450000 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 11 in Henan Province, the National University Science Park incubator incubator building No. 1 No. 408-418 Patentee before: Henan wisdom water Co., Ltd. |