CN204388964U - A kind of capacitance-type fuel quantity survey sensor with shield assembly and system - Google Patents
A kind of capacitance-type fuel quantity survey sensor with shield assembly and system Download PDFInfo
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- CN204388964U CN204388964U CN201420670178.2U CN201420670178U CN204388964U CN 204388964 U CN204388964 U CN 204388964U CN 201420670178 U CN201420670178 U CN 201420670178U CN 204388964 U CN204388964 U CN 204388964U
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- fuel quantity
- shield assembly
- survey sensor
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Abstract
The utility model discloses capacitance-type fuel quantity survey sensor and the system of band shield assembly.Sensor comprises measures electric capacity and metal screen layer, and described measurement electric capacity comprises two electrodes, and described metal screen layer is wrapped in measures electric capacity outside.System comprises the capacitance-type fuel quantity survey sensor of band shield assembly, and described survey sensor is connected with signal processing circuit and signal output interface.The utility model is by utilizing metal screen layer to measure electric capacity and external electromagnetic environment is completely isolated, ensure that the raw data gathered is not easily by electromagnetic interference (EMI), thus ensure the accuracy of measurement data, be conducive to subsequent treatment and the analysis of data, and structure is simple, has good economic and social benefit.
Description
Technical field
The utility model relates to oil measurement field, particularly relates to a kind of capacitance-type fuel quantity survey sensor, and the utility model also relates to a kind of capacitance-type fuel quantity measuring system.
Background technology
The widespread use in aircraft fuel oil measuring system of condenser type fuel quantity sensor, but also there are some electromagnetic compatibility problem in actual applications, easily be subject to the impact of the electromagnetic radiation such as aircraft short-wave radio set, cause test data occur saltus step or measure inaccurate problem.Be not a common problem of existing product by RS103 (electric field radiation susceptibility) EMC test, portioned product can only complete test by reducing test severity, causes in actual application environment, expose a lot of problem.
Cause the main cause of these problems, be derived from the measuring principle of Capacitor-type Fuel Quantity Sensor, the capacitor plate of existing product sensor is directly exposed in electromagnetic interference environment, to the measurement of its charge and discharge process by electromagnetic interference influence capacitance.
In prior art, there is following problem in capacitance-type fuel quantity measurement: sensor measures capacitance does not have EMC (Electro Magnetic Compatibility) protection Design, and the original signal collected is easily by the impact of periphery electromagnetic environment, and signal has and fluctuates significantly.Because measuring accuracy is easily subject to the impact of electromagnetic interference (EMI), the intractability of rear class signal is strengthened, and existing capacitive measurement system is not substantially by RS103 electromagnetic compatibility test.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of capacitance-type fuel quantity survey sensor can isolating electromagnetic interference (EMI).
In order to solve the problems of the technologies described above, another object of the present utility model is to provide a kind of capacitance-type fuel quantity measuring system can isolating electromagnetic interference (EMI).
The technical scheme that the utility model adopts is:
With a capacitance-type fuel quantity survey sensor for shield assembly, it comprises measures electric capacity and metal screen layer, and described measurement electric capacity comprises two electrodes, and described metal screen layer is wrapped in measures electric capacity outside.
Preferably, it is cylindrical structural, and described measurement electric capacity comprises interior electrode and external electrode, concentrically toroidal from the inside to the outside when described interior electrode, external electrode and metal screen layer are overlooked.
Preferably, described metal screen layer is wrapped in external electrode outside and is insulated by insulating material and external electrode and isolates.
Preferably, described insulating material is teflon.
Preferably, described metal screen layer has multiple air hole.
Preferably, the bottom of described measurement electric capacity is provided with oil-in.
With a capacitance-type fuel quantity measuring system for shield assembly, it comprises the capacitance-type fuel quantity survey sensor of band shield assembly, and described survey sensor is connected with signal processing circuit and signal output interface.
Preferably, it also comprises pcb board, and described signal processing circuit is arranged on pcb board.
Preferably, it also comprises output data connector, and described output data connector has Metal shielding shell and transmission line, and the metal screen layer of described survey sensor and Metal shielding shell are electrically connected.
The beneficial effects of the utility model are:
A kind of capacitance-type fuel quantity survey sensor with shield assembly of the utility model is by utilizing metal screen layer to measure electric capacity and external electromagnetic environment is completely isolated, ensure that the raw data gathered is not easily by electromagnetic interference (EMI), thus ensure the accuracy of measurement data, be conducive to subsequent treatment and the analysis of data, and structure is simple, has good economic and social benefit.
In addition, this practical information utilizes columniform capacitive transducer to design, and make to measure electric capacity and more meet oil drum structure, adaptability is stronger; By arranging air hole at screen layer, smoothly by while screen layer inflow and outflow internal measurement electrode, by design ventilation opening size, quantity and position, can effectively prevent entering of electromagnetic disturbance at guarantee fuel oil.
The utility model can be widely used in various capacitance-type fuel quantity measuring system.
Another beneficial effect of the present utility model is:
A kind of capacitance-type fuel quantity measuring system with shield assembly of the utility model is by utilizing metal screen layer to measure electric capacity and external electromagnetic environment is completely isolated, ensure that the raw data gathered is not easily by electromagnetic interference (EMI), thus ensure the accuracy of measurement data, be conducive to subsequent treatment and the analysis of data, and structure is simple, has good economic and social benefit.
In addition, this practical information utilizes columniform capacitive transducer to design, and make to measure electric capacity and more meet oil drum structure, adaptability is stronger; By arranging air hole at screen layer, smoothly by while screen layer inflow and outflow internal measurement electrode, by design ventilation opening size, quantity and position, can effectively prevent entering of electromagnetic disturbance at guarantee fuel oil; Be connected with metal screen layer by the Metal shielding shell exporting data connector, realize signal integrity shielding.
The utility model can be widely used in various capacitance-type fuel quantity measuring system.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is the plan structure schematic diagram of a kind of a kind of embodiment of capacitance-type fuel quantity survey sensor with shield assembly of the utility model;
Fig. 2 is the structural representation of a kind of a kind of embodiment of capacitance-type fuel quantity measuring system with shield assembly of the utility model.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figure 1, a kind of capacitance-type fuel quantity survey sensor with shield assembly, it comprises measures electric capacity and metal screen layer, and described measurement electric capacity comprises two electrodes, and described metal screen layer is wrapped in measures electric capacity outside.Preferably, it is cylindrical structural, and described measurement electric capacity comprises interior electrode and external electrode, concentrically toroidal from the inside to the outside when described interior electrode, external electrode and metal screen layer are overlooked.Preferably, described metal screen layer is wrapped in external electrode outside and is insulated by insulating material and external electrode and isolates.Preferably, described insulating material is teflon.Preferably, described metal screen layer has multiple air hole.Preferably, the bottom of described measurement electric capacity is provided with oil-in 4.
In this embodiment, metallic shield is carried out to measurement electric capacity, the signal of its principle as shown in Figure 1, in measurement electric capacity, electrode B and external electrode A utilize all-metal screen layer 1 to carry out electromagnetic compatibility shielding, metal screen layer 1 directly connects casing ground, will measure electric capacity and the extraneous isolation being realized electromagnetic environment by metal screen layer 1.
Specific design as shown in Figure 2, the interior electrode B of whole measurement electric capacity and external electrode A carry out isolation by outermost screen layer 1 and close, screen layer 1 and internal and external electrode A carry out insulation by teflon insulation block 5 to be isolated and is mounted with, screen layer about 1 all needs out some air holes, ensure that fuel oil can be flowed into by screen layer 1 smoothly or flow out internal measurement electrode, realize the test of measuring capacitance, simultaneously by design ventilation opening size, quantity and position, can effectively prevent entering of electromagnetic interference (EMI), not affect shielding properties.
A kind of capacitance-type fuel quantity survey sensor with shield assembly of the utility model is by utilizing metal screen layer to measure electric capacity and external electromagnetic environment is completely isolated, ensure that the raw data gathered is not easily by electromagnetic interference (EMI), thus ensure the accuracy of measurement data, be conducive to subsequent treatment and the analysis of data, and structure is simple, has good economic and social benefit.
In addition, this practical information utilizes columniform measurement capacitor design, and make to measure electric capacity and more meet oil drum structure, adaptability is stronger; By arranging air hole at screen layer, smoothly by while screen layer inflow and outflow internal measurement electrode, by design ventilation opening size, quantity and position, can effectively prevent entering of electromagnetic disturbance at guarantee fuel oil.
The utility model can be widely used in various capacitance-type fuel quantity measuring system.
As shown in Figure 2, a kind of capacitance-type fuel quantity measuring system with shield assembly, it comprises the capacitance-type fuel quantity survey sensor of band shield assembly, and described survey sensor is connected with signal processing circuit and signal output interface.The electric signal that shown signal processing circuit is come for the treatment of measurement capacitive transmission.Wherein, sensor is arranged on the conductive structure part of system by conductive mounting hole, makes whole screen layer 1 and system chassis ground connection, plays electromagnetic shielding action.
Preferably, it also comprises pcb board, and described signal processing circuit is arranged on pcb board.
Preferably, it also comprises output data connector, and described output data connector has Metal shielding shell and transmission line, and the metal screen layer of described survey sensor and Metal shielding shell are electrically connected.The electric signal that described output data connector is used for signal processing circuit exports outputs to external unit.Wherein, output data connector 3 Metal shielding shell and output signal cable are also connected with screen layer 1, carry out complete shielding.
A kind of capacitance-type fuel quantity measuring system with shield assembly of the utility model is by utilizing metal screen layer to measure electric capacity and external electromagnetic environment is completely isolated, ensure that the raw data gathered is not easily by electromagnetic interference (EMI), thus ensure the accuracy of measurement data, be conducive to subsequent treatment and the analysis of data, and structure is simple, has good economic and social benefit.
In addition, this practical information utilizes columniform measurement capacitor design, and make to measure electric capacity and more meet oil drum structure, adaptability is stronger; By arranging air hole at screen layer, smoothly by while screen layer inflow and outflow internal measurement electrode, by design ventilation opening size, quantity and position, can effectively prevent entering of electromagnetic disturbance at guarantee fuel oil; Be connected with metal screen layer by the Metal shielding shell exporting data connector, realize signal integrity shielding.
The utility model can be widely used in various capacitance-type fuel quantity measuring system.
More than that better enforcement of the present utility model is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (9)
1. the capacitance-type fuel quantity survey sensor with shield assembly, is characterized in that, it comprises measures electric capacity and metal screen layer, and described measurement electric capacity comprises two electrodes, and described metal screen layer is wrapped in measures electric capacity outside.
2. a kind of capacitance-type fuel quantity survey sensor with shield assembly according to claim 1, it is characterized in that, described capacitance-type fuel quantity survey sensor is cylindrical structural, described measurement electric capacity comprises interior electrode and external electrode, concentrically toroidal from the inside to the outside when described interior electrode, external electrode and metal screen layer are overlooked.
3. a kind of capacitance-type fuel quantity survey sensor with shield assembly according to claim 2, is characterized in that, described metal screen layer is wrapped in external electrode outside and is insulated by insulating material and external electrode isolates.
4. a kind of capacitance-type fuel quantity survey sensor with shield assembly according to claim 3, it is characterized in that, described insulating material is teflon.
5. a kind of capacitance-type fuel quantity survey sensor with shield assembly according to any one of Claims 1-4, it is characterized in that, described metal screen layer has multiple air hole.
6. a kind of capacitance-type fuel quantity survey sensor with shield assembly according to claim 5, it is characterized in that, the bottom of described measurement electric capacity is provided with oil-in.
7. the capacitance-type fuel quantity measuring system with shield assembly, it is characterized in that, it comprises the capacitance-type fuel quantity survey sensor of the band shield assembly as described in any one of claim 1 to 6, and described survey sensor is connected with signal processing circuit and signal output interface.
8. a kind of capacitance-type fuel quantity measuring system with shield assembly according to claim 7, it is characterized in that, it also comprises pcb board, and described signal processing circuit is arranged on pcb board.
9. a kind of capacitance-type fuel quantity measuring system with shield assembly according to claim 7 or 8, it is characterized in that, it also comprises output data connector, described output data connector has Metal shielding shell and transmission line, and the metal screen layer of described survey sensor and Metal shielding shell are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670178.2U CN204388964U (en) | 2014-11-11 | 2014-11-11 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670178.2U CN204388964U (en) | 2014-11-11 | 2014-11-11 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
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| CN204388964U true CN204388964U (en) | 2015-06-10 |
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| CN201420670178.2U Active CN204388964U (en) | 2014-11-11 | 2014-11-11 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036676A (en) * | 2017-05-19 | 2017-08-11 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer, fuel quantity meas urement system and measuring method |
| CN107167214A (en) * | 2017-05-19 | 2017-09-15 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer |
| CN107200140A (en) * | 2017-05-19 | 2017-09-26 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and aircraft |
| CN107270998A (en) * | 2017-05-19 | 2017-10-20 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and fuel tank |
| CN108375372A (en) * | 2018-05-02 | 2018-08-07 | 北京雷神博峰信息技术有限责任公司 | A kind of vehicle attitude and environmental monitor |
| CN110887542A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Light-weight shielding type oil quantity sensor |
-
2014
- 2014-11-11 CN CN201420670178.2U patent/CN204388964U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036676A (en) * | 2017-05-19 | 2017-08-11 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer, fuel quantity meas urement system and measuring method |
| CN107167214A (en) * | 2017-05-19 | 2017-09-15 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer |
| CN107200140A (en) * | 2017-05-19 | 2017-09-26 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and aircraft |
| CN107270998A (en) * | 2017-05-19 | 2017-10-20 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and fuel tank |
| CN107270998B (en) * | 2017-05-19 | 2019-11-26 | 中航工业南航（深圳）测控技术有限公司 | Fuel-quantity transducer and fuel tank |
| CN107200140B (en) * | 2017-05-19 | 2020-04-03 | 中航工业南航（深圳）测控技术有限公司 | Oil mass sensor and aircraft |
| CN108375372A (en) * | 2018-05-02 | 2018-08-07 | 北京雷神博峰信息技术有限责任公司 | A kind of vehicle attitude and environmental monitor |
| CN110887542A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Light-weight shielding type oil quantity sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Capacitive oil flow measuring sensor with shielding device and system Effective date of registration: 20180205 Granted publication date: 20150610 Pledgee: Shenzhen high tech investment and financing Company limited by guarantee Pledgor: SHENZHEN NANHANG ELECTRONIC INDUSTRY CO., LTD. Registration number: 2018990000124 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |