CN203858008U - High-precision variable-scanning oil level measuring sensor adopting matrix capacitance - Google Patents
High-precision variable-scanning oil level measuring sensor adopting matrix capacitance Download PDFInfo
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- CN203858008U CN203858008U CN201420133977.6U CN201420133977U CN203858008U CN 203858008 U CN203858008 U CN 203858008U CN 201420133977 U CN201420133977 U CN 201420133977U CN 203858008 U CN203858008 U CN 203858008U
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- electric capacity
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Abstract
The utility model provides a high-precision variable-scanning oil level measuring sensor adopting matrix capacitance. The high-precision variable-scanning oil level measuring sensor is used for solving the problems of low precision, high power consumption, many mechanical components, installation complexity and great error of measurement aiming at different oil products of the traditional oil level measuring sensor. The high-precision variable-scanning oil level measuring sensor comprises an electrode pole, a signal processing device and an electric box, wherein the signal processing device is connected with the electrode pole, the electric box is used for protecting the signal processing device, the electric pole is connected with the electric box through an electrode connecting element, the electrode pole comprises an internal electrode and an external electrode, the internal electrode is connected with the external electrode through an electrode supporter, the internal electrode comprises two or more than two metal sheets and one support round rod, the metal sheets pass through the support round rod and are fixedly connected with the support round rod, a lead wire is arranged on each metal sheet, the lead wires are led out through the support round rod and are used for the signal processing device to collect signals, the electric box comprises a casing, an upper cover and a lower cover, and the upper cover and the lower cover are respectively positioned at the upper end and the lower end of the casing and are fixedly connected with the casing.
Description
Technical field
The utility model relates to a kind of oil-level measurement sensor, relates in particular to the high-precision change scanning of a kind of employing matrix electric capacity oil-level measurement sensor, belongs 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.
Utility model content
The deficiency that the utility model exists for prior art, the high-precision change of a kind of employing matrix electric capacity scanning oil-level measurement sensor 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 utility model solves the problems of the technologies described above is as follows: the high-precision change scanning of a kind of employing 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, 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 by wire, passes described upper cover 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 beneficial effects of the utility model are: the utility model 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.Realized high-precision measurement, also reduced temperature and floated simultaneously; Utilize the principle of electric capacity scanning to measure liquid level, solved simultaneously when the medium of liquid changes, can automatically adapt to the variation of different medium, can adapt to the liquid of different medium.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is external structure schematic diagram of the present utility model;
Fig. 3 is the structural representation of electrode in the utility model.
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 utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
The high-precision change scanning of a kind of employing matrix electric capacity oil-level measurement sensor, 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 by wire, passes described upper cover 11 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.
Embodiment of the present utility model is as follows:
Interior electrode 4 is comprised 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, when 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, obtained 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 during liquid-immersed first paragraph, the height of first paragraph is L1x, during submergence second segment, the height of second segment is L2x, and during 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: when 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, and the while has also reduced temperature and floated.
Utilize the principle of electric capacity scanning to measure liquid level, solved simultaneously when 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, in the time of 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, when 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 utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
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 of employing matrix electric capacity according to claim 3 scans 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 |
|---|---|---|---|
| CN201420133977.6U CN203858008U (en) | 2014-03-24 | 2014-03-24 | High-precision variable-scanning oil level measuring sensor adopting matrix capacitance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133977.6U CN203858008U (en) | 2014-03-24 | 2014-03-24 | High-precision variable-scanning oil level measuring sensor adopting matrix capacitance |
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| Publication Number | Publication Date |
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| CN203858008U true CN203858008U (en) | 2014-10-01 |
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| CN201420133977.6U Expired - Fee Related CN203858008U (en) | 2014-03-24 | 2014-03-24 | High-precision variable-scanning oil level measuring sensor adopting matrix capacitance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913207A (en) * | 2014-03-24 | 2014-07-09 | 郑州科达自动化工程有限公司 | High-precision variable-scan oil level measurement sensor with matrix capacitor |
-
2014
- 2014-03-24 CN CN201420133977.6U patent/CN203858008U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913207A (en) * | 2014-03-24 | 2014-07-09 | 郑州科达自动化工程有限公司 | High-precision variable-scan oil level measurement sensor with matrix capacitor |
| CN103913207B (en) * | 2014-03-24 | 2017-02-22 | 郑州科达自动化工程有限公司 | High-precision variable-scan oil level measurement sensor with matrix capacitor |
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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: 20141001 Termination date: 20150324 |
|
| EXPY | Termination of patent right or utility model |