CN205537847U - Edge effect formula electric capacity level sensor of on -vehicle LNG bottle - Google Patents
Edge effect formula electric capacity level sensor of on -vehicle LNG bottle Download PDFInfo
- Publication number
- CN205537847U CN205537847U CN201620389313.5U CN201620389313U CN205537847U CN 205537847 U CN205537847 U CN 205537847U CN 201620389313 U CN201620389313 U CN 201620389313U CN 205537847 U CN205537847 U CN 205537847U
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- China
- Prior art keywords
- level sensor
- edge effect
- liquid level
- electric capacity
- capacity level
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to an electric capacity level sensor, in particular to edge effect formula electric capacity level sensor of on -vehicle LNG bottle. Including the on -vehicle jar of LNG, electric capacity level sensor, signal transmitter ware, wave filter, data acquisition and display module, electric capacity level sensor set up in on -vehicle jar of LNG, electric capacity level sensor connects gradually signal transmitter ware and wave filter, the output of wave filter be connected to the input of data acquisition and display module. Neotype edge effect formula condenser is adopted in this design to directly utilize the edge effect of condenser to carry out the accurate measurement, solved the influence that edge effect produced in the present parallel plate capacitor liquid level measurement method.
Description
Technical field
This utility model relates to a kind of capacitive liquid level sensor, particularly to the limit of a kind of vehicle-mounted LNG bottle
Edge effect formula capacitive liquid level sensor.
Background technology
Liquefied natural gas (being called for short LNG) is the most all stored in the basin that insulation is adiabatic, owing to it surpasses
The characteristic of low temperature and the sealing of basin, cause its measurement extremely difficult.At present frequently with parallel-plate
The method of capacitor, capacitance becomes big with the rising of liquid level, utilizes signal processor to gather parallel-plate
The capacitance of capacitor, compared with the capacitance of full load, can obtain current liquid level,
Thus draw remaining liquid measure.But owing to we cannot produce infinity, plate away from nothing in daily life
Limit little ideal capacitance plate, so the edge effect of capacitor board will during current capacitor board uses
Cause measured capacitance value inaccurate, thus cause liquid level estimation inaccurate, cause liquid feeding not in time, produce
Make trouble former.
It is within the contemplation of the invention that use novel edge effect formula capacitor, thus directly utilize the limit of capacitor
Edge effect is accurately measured.
Utility model content
This utility model aims to solve the problem that the problems referred to above, it is provided that the edge effect formula of a kind of vehicle-mounted LNG bottle
Capacitive liquid level sensor, uses novel edge effect formula capacitor, thus directly utilizes capacitor
Edge effect is accurately measured, and its technical scheme used is as follows:
The edge effect formula capacitive liquid level sensor of a kind of vehicle-mounted LNG bottle, including LNG cargo tank, electricity
Hold liquid level sensor, signal transmitting device, wave filter, data acquisition and display module, described electric capacity
Liquid level sensor is arranged in LNG cargo tank, and capacitive liquid level sensor is consecutively connected to signal transmitting device
And wave filter；The outfan of described wave filter is connected to the input of data acquisition and display module.
Described capacitive liquid level sensor includes positive plate, negative plate A, negative plate B, described negative pole
Together with plate A is wired to negative plate B and receive signal transmitter.
Described positive plate, negative plate A and negative plate B are placed in approximately the same plane.
Beneficial effect: the edge effect formula capacitive liquid level sensor of a kind of vehicle-mounted LNG bottle, uses novel
Edge effect formula capacitor, thus the edge effect directly utilizing capacitor is accurately measured, and solves
Determine the impact that edge effect produces in current plane-parallel capacitor level measuring method, it is not necessary to extra
The elimination carrying out edge effect calculates, and not only facilitates, and the requirement step-down to processor, reduce
Cost, safeguards the most simpler；Take full advantage of the edge effect originally causing error, be a kind of complete
New thinking.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model；
Fig. 2: pole plate mounting structure schematic diagram of the present utility model.
Symbol description
1.LNG cargo tank, 2. capacitive liquid level sensor, 3. signal transmitting device, 4. wave filter, 5. data
Gather and display module；
21. pole plate A, 22. positive plates, 23. negative plate B.
Detailed description of the invention
The utility model is described in further detail with example below in conjunction with the accompanying drawings:
As shown in Figure 1-2, the edge effect formula capacitive liquid level sensor of a kind of vehicle-mounted LNG bottle, including
LNG cargo tank 1, capacitive liquid level sensor 2, signal transmitting device 3, wave filter 4, data acquisition and aobvious
Showing that module 5, described capacitive liquid level sensor 2 are arranged in LNG cargo tank 1, capacitance liquid level senses
Device 2 is consecutively connected to signal transmitting device 3 and wave filter 4；The outfan of described wave filter 4 is connected to
Data acquisition and the input of display module 5.
Above-mentioned capacitive liquid level sensor 2 includes positive plate 22, negative plate A21, negative plate B23, institute
Together with the negative plate A21 stated is wired to negative plate B23 and receive signal transmitter 3.
Above-mentioned positive plate 22, negative plate A21 and negative plate B23 are placed in approximately the same plane.
Work process: edge effect formula capacitive liquid level sensor 2 uses negative plate A21 and negative plate
B23 is installed in parallel in positive plate 22 both sides, is the capacitance sensor of a kind of electric field leakage type；Liquid in tank
When position changes, between pole plate, electric field changes, and causes electric capacity to change, sends signal to
Signal transmitting device 3 also produces signal, and signal device 4 after filtering is sent to data acquisition and display module 5,
Just liquid level can be learnt.Make full use of edge effect, thus solve the edge effect shadow to the process of measurement
Ring.
Claims (3)
1. the edge effect formula capacitive liquid level sensor of a vehicle-mounted LNG bottle, it is characterised in that: include
LNG cargo tank (1), capacitive liquid level sensor (2), signal transmitting device (3), wave filter (4), number
According to gathering and display module (5), described capacitive liquid level sensor (2) is arranged on LNG cargo tank (1)
In, capacitive liquid level sensor (2) is consecutively connected to signal transmitting device (3) and wave filter (4)；Described
The outfan of wave filter (4) be connected to data acquisition and the input of display module (5).
The edge effect formula capacitance liquid level sensing of a kind of vehicle-mounted LNG bottle the most according to claim 1
Device, it is characterised in that: capacitive liquid level sensor (2) include positive plate (22), negative plate A (21),
Negative plate B (23), described negative plate A (21) and negative plate B (23) are wired to one
Play and receive signal transmitter (3).
The edge effect formula capacitance liquid level sensing of a kind of vehicle-mounted LNG bottle the most according to claim 2
Device, it is characterised in that: positive plate (22), negative plate A (21) and negative plate B (23) are placed in same
In one plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389313.5U CN205537847U (en) | 2016-05-03 | 2016-05-03 | Edge effect formula electric capacity level sensor of on -vehicle LNG bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389313.5U CN205537847U (en) | 2016-05-03 | 2016-05-03 | Edge effect formula electric capacity level sensor of on -vehicle LNG bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205537847U true CN205537847U (en) | 2016-08-31 |
Family
ID=56795404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620389313.5U Expired - Fee Related CN205537847U (en) | 2016-05-03 | 2016-05-03 | Edge effect formula electric capacity level sensor of on -vehicle LNG bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205537847U (en) |
-
2016
- 2016-05-03 CN CN201620389313.5U patent/CN205537847U/en not_active Expired - Fee Related
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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: 20160831 Termination date: 20170503 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |