CN206208343U - The liquid level sensor of multielectrode capacitance formula - Google Patents
The liquid level sensor of multielectrode capacitance formula Download PDFInfo
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- CN206208343U CN206208343U CN201620949502.3U CN201620949502U CN206208343U CN 206208343 U CN206208343 U CN 206208343U CN 201620949502 U CN201620949502 U CN 201620949502U CN 206208343 U CN206208343 U CN 206208343U
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- liquid level
- level sensor
- conductive layer
- conduction region
- patterned conductive
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Abstract
The utility model discloses a kind of liquid level sensor of multielectrode capacitance formula, includes container and the circuit board in container；Wherein, the circuit board has first surface and second surface, the first surface or/and second surface are formed with patterned conductive layer, and the patterned conductive layer has multiple conduction regions being separated by out, and the conduction region is configured to be in contact with the liquid during one measures.Thereby, by by liquid level sensor with the conduction region of the patterned conductive layer of circuit board as electrode, because circuit board electrode making is easy, precision is high, compared to the liquid level sensor of existing mechanical structure multielectrode capacitance formula, there is structure to simplify for it, and correction is easily, system is stable, reliability is high, low cost advantage.
Description
Technical field
The utility model is related to liquid level sensor art, refers in particular to a kind of level sensing of multielectrode capacitance formula
Device.
Background technology
The fluid of general industry and consumer applications, including liquids and gases, are commonly stored in container.For example, exist
In industrial circle, the stream such as mixture or compound of petrochemical gas and liquid, chemical gas and liquid and medicine
Body, generally stores in a reservoir.In with the correlated process of the manufacture or application of these gases and liquid, the liquid of gas and liquid
Position must measure.Traditional liquid level detection technology uses pressure sensor or capacitance sensor.
But pressure sensor because costly, easy to wear, change in resistance it is big, the preferable selection that not liquid level is measured.It is existing
Capacitance sensor, there is also some defects, refer to shown in Fig. 1, it show generally more representative in the prior art
A kind of structure of liquid level sensor 100.Liquid level sensor 100 is used to measure the liquid level of liquid 18, and it includes a metal tube
11, one is located at the insulation tube 12 in metal tube 11, and is arranged at the electrode 14 in insulation tube 12.Electrode 14 along insulation tube 12 it
Axially arrangement, and electrically connected with a signal receiving device 16 via wire 17 (only illustrating two of which).In many cases,
Because liquid 18 makes measurement inaccurate containing moisture or possible conduction, therefore electrode 14 is coated in it with insulation tube 12.Absolutely
Edge pipe 12 can be in cylinder, spaced-apart electrodes 14 and testing liquid 18.Because insulation tube 12 and electrode 14 are to adopt Design of Mechanical Structure,
It is relatively costly in making.Also, as shown in figure 1, electrode 14 through insulation tube 12 with testing liquid 18 because separating during measurement
One spacing d, makes electrode 14 be not in contact with testing liquid 18, causes more inaccurate on the sensing of electric capacity.
Utility model content
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of multi-electrode to the utility model
The liquid level sensor of condenser type, it has, and system is stable, reliability is high, low cost advantage.
To achieve the above object, the utility model is using following technical scheme：
A kind of liquid level sensor of multielectrode capacitance formula, includes container and the circuit board in container；Wherein, the electricity
Road plate has first surface and second surface, and the first surface or/and second surface are formed with patterned conductive layer, described
Patterned conductive layer has multiple conduction regions being separated by out.
Used as a kind of preferred scheme, the container includes a metal tube.
Used as a kind of preferred scheme, the patterned conductive layer also has bonding pad；Wherein, the bonding pad in similar face
It is electrically connected with conduction region；Or, the bonding pad on first surface is electrically connected with the conduction region on second surface, second surface
On bonding pad and first surface on conduction region be electrically connected with.
Used as a kind of preferred scheme, the spacing between adjacent conductive area in similar face is consistent.
Used as a kind of preferred scheme, the spacing between adjacent conductive area is defined as preset space length, and its preset space length is 1 milli
Rice.
The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology
Scheme understands that it is mainly liquid level sensor with the conduction region of the patterned conductive layer of circuit board as electrode, due to circuit
Plate electrode making is easy, precision is high, and compared to the liquid level sensor of existing mechanical structure multielectrode capacitance formula, it has knot
Structure is simplified, and correction is easily, system is stable, reliability is high, low cost advantage.
More clearly to illustrate architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings
The utility model is described in detail.
Brief description of the drawings
Fig. 1 is the schematic diagram of the liquid level sensor of prior art.
Fig. 2 is the structural representation of one of the utility model embodiment.
Fig. 3 is the top view of the liquid level sensor of multielectrode capacitance formula shown in Fig. 2.
Fig. 4 is profile at A-A in Fig. 3.
Fig. 5 is the profile of another embodiment of the utility model.
Accompanying drawing identifier declaration：
11st, metal tube 12, insulation tube
14th, electrode 16, signal receiving device
17th, wire 18, liquid
21st, container 21A, steam vent
21B, delivery hole 22, circuit board
24th, conduction region 25, bonding pad
26th, signal receiving device 29, patterned conductive layer
100th, liquid level sensor 200, liquid level sensor
220th, via conductors 221, first surface
222nd, second surface 227, conductor line
241st, the first conduction region 242, the second conduction region
251st, the first bonding pad 252, the second bonding pad
257th, wire 291, the first patterned conductive layer
292nd, the second patterned conductive layer 500, liquid level sensor
D, spacing gp, preset space length.
Specific embodiment
Refer to shown in Fig. 2 to Fig. 5, that show the concrete structure of the embodiment of the utility model.
The liquid level sensor of the multielectrode capacitance formula, includes container and the circuit board in container；Wherein, the circuit
Plate has first surface and second surface, and the first surface or/and second surface are formed with patterned conductive layer, the figure
Case conductive layer has multiple conduction regions being separated by out, and the spacing between adjacent conductive area in similar face is consistent.Institute
Stating patterned conductive layer also has bonding pad；Wherein, in similar face bonding pad and conduction region is electrically connected with；Or, first
Bonding pad on surface is electrically connected with the conduction region on second surface, leading on the bonding pad on second surface and first surface
Electric area is electrically connected with.
Here, specific embodiment is described as follows with reference to shown in Fig. 2 to Fig. 5：
Refer to shown in Fig. 2 to Fig. 4, liquid level sensor 200 includes a container 21, a circuit board 22 and is formed at circuit board
One patterned conductive layer 29 on 22 surfaces, container 21 is to accommodate a liquid 18.
In one of the utility model embodiment, container 21 includes a metal tube.Additionally, container 21 includes a steam vent
A 21A and delivery hole 21B.Delivery hole 21B is for liquid in 18 injection containers 21, and steam vent 21A is then used to make in container 21 it
Air is moved out outside container 21 when liquid 18 injects.
Circuit board 22 is located in the container 21.Patterned conductive layer 29 is then on the surface of circuit board 22 and with multiple
The conduction region 24 being separated by out, the grade conduction region 24 is configured to be in contact with liquid 18 during measurement as electrode.
Patterned conductive layer 29 separately includes a bonding pad 25, and it is configured to be electrically connected with conduction region 24.In the present embodiment, it is conductive
Area 24 is to be electrically connected with bonding pad 25 with conductor line 227 via via conductors (conductive via) 220.Due to conduction
Area 24, via conductors 220 and conductor line 227 are all made in one of the utility model embodiment with manufacture of semiconductor, are compared
In the liquid level sensor 100 of mechanical structure shown in Fig. 1, the liquid level sensor 200 of the utility model have make easily, cost
Low, precision is high so as to the advantage for having system stabilization, reliability high.
Bonding pad 25 electrically connects via wire 257 (only illustrating wherein) with a signal receiving device 26.Signal is received
Device 26 transmits signals to the processor positioned at main frame (figure is not illustrated).For example, the liquid level sensor of the utility model
200 can operate with vehicle for the oil product liquid level in sensing fuel tank.In the utilization of vehicle, liquid level sensor 200 connects via signal
Receiving apparatus 26 are electrically connected to the main frame on vehicle.
Also referring to Fig. 3 and Fig. 4, for convenience of description, two conduction regions 24 are only illustrated.Each conduction region 24 is all through each
From via conductors 220 and conductor line 227 be electrically connected with bonding pad 25.Spacing between adjacent conductive area is consistent, this
Place, preset space length gp is defined as by the spacing between adjacent conductive area, and its preset space length gp is 1 millimeter.Preset space length gp is big
The small accuracy that can influence electric capacitance measurement.In general, preset space length gp is smaller better.In one of the utility model embodiment
In, the size of preset space length gp is about 1 millimeter, using manufacture of semiconductor control.
Fig. 5 is according to another embodiment of the utility model, the profile of the liquid level sensor 500 of multielectrode capacitance formula.
The conduction region 24 for being different from Fig. 3 and Fig. 4 is only located at one of circuit board 22 surface, and the liquid level sensor 500 shown in Fig. 5 has and is located at
Positive and negative two surface of circuit board 22（That is first surface, second surface）Electrode.Specifically：Liquid level sensor 500 includes an electricity
Road plate 22, it has a first surface 221 and second surface 222.One first patterned conductive layer 291 is located at first surface
The first conduction region 241 being separated by out on 221 and with multiple.First conduction region 241 be configured in one measure during with
Liquid 18 is in contact；First patterned conductive layer 291 separately includes one first bonding pad 251.First bonding pad 251 be configured to
First conduction region 241 is electrically connected with.
Liquid level sensor 500 separately includes one second patterned conductive layer 292,222 and with multiple on second surface
The second conduction region 242 being separated by out.Second conduction region 242 is configured to be in contact with liquid 18 during the measurement.
In one of the utility model embodiment, on the first patterned conductive layer 291 on first surface 221 and second surface 222 the
Two patterned conductive layers 292 are in symmetric arrays.In addition, first conduction region 241 and the second pattern of the first patterned conductive layer 291
The second conduction region 242 for changing conductive layer 292 is also in symmetric arrays.
Second patterned conductive layer 292 separately includes one second bonding pad 252.Second bonding pad 252 is configured to and second
Conduction region 242 is electrically connected with.Additionally, as shown in figure 5, the first bonding pad 251 of the first patterned conductive layer 291 can be configured with
It is electrically connected with the second conduction region 252.Also, the second bonding pad 252 of the second patterned conductive layer 292 can be configured with first
Conduction region 251 is electrically connected with.
Design focal point of the present utility model is that it is mainly liquid level sensor with the patterned conductive layer of circuit board
Conduction region as electrode, due to circuit board electrode make easily, precision it is high, compared to existing mechanical structure multielectrode capacitance
The liquid level sensor of formula, there is structure to simplify for it, and correction is easily, system is stable, reliability is high, low cost advantage.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made
Any limitation, therefore every any trickle amendment, equivalent change made to above example according to technical spirit of the present utility model
Change and modify, still fall within the range of technical solutions of the utility model.
Claims (5)
1. a kind of liquid level sensor of multielectrode capacitance formula, it is characterised in that：Include container and the circuit board in container；
Wherein, the circuit board has first surface and second surface, and the first surface or/and second surface are formed with patterning and lead
Electric layer, the patterned conductive layer has multiple conduction regions being separated by out.
2. the liquid level sensor of multielectrode capacitance formula according to claim 1, it is characterised in that：The container includes a gold medal
Category pipe.
3. the liquid level sensor of multielectrode capacitance formula according to claim 1, it is characterised in that：The patterned conductive layer
Also there is bonding pad；Wherein, in similar face bonding pad and conduction region is electrically connected with；Or, the bonding pad on first surface
It is electrically connected with the conduction region on second surface, the bonding pad on second surface is electrically connected with the conduction region on first surface.
4. the liquid level sensor of multielectrode capacitance formula according to claim 1, it is characterised in that：It is adjacent in similar face
Spacing between conduction region is consistent.
5. the liquid level sensor of multielectrode capacitance formula according to claim 4, it is characterised in that：Between adjacent conductive area
Spacing is defined as preset space length, and its preset space length is 1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620949502.3U CN206208343U (en) | 2016-08-26 | 2016-08-26 | The liquid level sensor of multielectrode capacitance formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620949502.3U CN206208343U (en) | 2016-08-26 | 2016-08-26 | The liquid level sensor of multielectrode capacitance formula |
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| Publication Number | Publication Date |
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| CN206208343U true CN206208343U (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620949502.3U Active CN206208343U (en) | 2016-08-26 | 2016-08-26 | The liquid level sensor of multielectrode capacitance formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204847A (en) * | 2017-12-27 | 2018-06-26 | 中国航发四川燃气涡轮研究院 | A kind of aircraft engine oil liquid level and oil product one measurement sensor and method |
-
2016
- 2016-08-26 CN CN201620949502.3U patent/CN206208343U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204847A (en) * | 2017-12-27 | 2018-06-26 | 中国航发四川燃气涡轮研究院 | A kind of aircraft engine oil liquid level and oil product one measurement sensor and method |
| CN108204847B (en) * | 2017-12-27 | 2020-04-07 | 中国航发四川燃气涡轮研究院 | Aero-engine lubricating oil liquid level and oil product integrated measurement sensor and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 101, No. 1, East Ring 3rd Street, Jitiagang, Huangjiang Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Zhengyang Sensor Technology Co.,Ltd. Address before: 523000 Jijigang Second Industrial Zone, Helu Industrial Avenue, Huangjiang Town, Dongguan City, Guangdong Province Dongguan Zhengyang Electronic Machinery Co.,Ltd. Patentee before: DONGGUAN ZHENGYANG ELECTRONIC MECHANICAL Co.,Ltd. |
|
| CP03 | Change of name, title or address |