CN204241068U - Condenser type Multiple Liquid Level Instrument - Google Patents
Condenser type Multiple Liquid Level Instrument Download PDFInfo
- Publication number
- CN204241068U CN204241068U CN201420406024.2U CN201420406024U CN204241068U CN 204241068 U CN204241068 U CN 204241068U CN 201420406024 U CN201420406024 U CN 201420406024U CN 204241068 U CN204241068 U CN 204241068U
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- CN
- China
- Prior art keywords
- liquid level
- insulation shell
- pad
- circuit board
- monomer column
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- Expired - Fee Related
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of capacitance type liquid level pick-up unit measuring liquid level.It is by circuit board package in monomer column insulation shell, and tangent plane holding circuit plate triggering PAD and monomer column insulation shell is in the same side.The circuit board journey strip of capacitance type liquid level pick-up unit inside, circuit board is disposed in order multiple triggering PAD, this triggering PAD and capacitive sensing MCU chip and is formed and respond to path.Inductance capacitance channel setting standard capacitor-value that capacitive sensing MCU chip can be formed each triggering PAD by algorithm process, when liquid level arrives the outer a certain position of monomer column insulation shell, that corresponding capacitance triggered on PAD path can change, now capacitive sensing MCU chip will detect signal, thus through process to reach the object detecting liquid level.When casing is unexpected rocked time the duration that can be responded to by liquid level avoid the erroneous judgement of liquid level.
Description
Technical field
The utility model relates to a kind of liquid level detection device detecting liquid level, especially can measure liquid level quick and easy, accurately and the liquid level detecting device that can directly output signal.
Background technology
At present, on market, the electric equipment such as most desk type water purification, air compressor machine, dish-washing machine all needs liquid level detection device.These need the electric equipment detecting liquid level to be all generally adopt float-type liquid level tester.The principle of this liquid level detection device is, at airtight metal or plastic pipe built with one or more ring-like magnetic contact element (magnetic red).Tube exterior is provided with the hollow float that magnet is equipped with in inside.When liquid level rises or decline, ball float also can fluctuate along with liquid level.When ball float can attract the switch contact of magnetic red through magnetic red, produce the action of Push And Release thus trigger circuit, then export by liquid level detection device top line the detection that electric signal realizes liquid level.This liquid level detection device has some shortcomings part, level sensing point quantity is limited to, the detection of this level gauge is changed along with liquid level by ball float and touches magnetic red contact in pipe and trigger circuit signal, level sensing point quantity is determined by the magnetic red quantity in pipe, due to the uncertainty of magnetic field of magnets, so the quantity of magnetic red is limited to very much.Complex structure, this liquid level detection device all can need two ball floats and four set collars usually, and structure is comparatively complicated.Life-span limits, and be similar to this type of mechanical liquid level detection device, the life-span that ball float swings up and down generally only has several ten thousand times.There is liquid level erroneous judgement situation, when casing rocks, this liquid level detection device can produce the situation of liquid level erroneous judgement.
Summary of the invention
In order to overcome the above-mentioned not enough problem of conventional mechanical float ball liquid level detection device, this practical capacitance type liquid level pick-up unit forms coupling capacitance between liquid and the triggering PAD of tank gage internal circuit board when utilizing liquid arrival tank gage outer wall side pilot, this coupling capacitance can change MCU to the original standard capacitor-value triggered set by PAD, thus judges liquid level.In actual use, multiple triggering PAD can be arranged according to demand to count to the detection increasing liquid level.The utility model adopts the mode of colloid encapsulation seal parts in monomer column insulation shell, without the need to ball float and set collar.Capacitance induction type liquid level pick-up unit right and wrong are mechanical, longer service life.The capacitive induction MCU chip internal composition of this liquid level detection device has detection liquid level instantaneous variation algorithm in addition, and the duration can responded to by liquid level when casing surprisingly rocks avoids liquid level erroneous judgement.Overall cost is lower, and performance is better, uses more stable.
The utility model solves the technical scheme that its technical matters adopts: the circuit board being packaged with strip in the monomer column insulation shell at one end sealed, and there is tangent plane monomer column insulation shell side, circuit board arranges multiple triggering PAD (level sensing point) according to the length sequence of monomer column insulation shell.Circuit board triggers PAD and monomer column insulation shell tangent plane is positioned at the same side, and it is inner to use insulation colloid to be encapsulated in monomer column insulation shell.Whole monomer column insulation shell outer wall is smooth without miscellaneous part, and submergence part in a liquid seals completely, and structure is simple, adopts the fastening means of O-ring seal and nut between top circuit board insert port and casing.The circuit board journey strip of liquid level detection device inside, circuit board is disposed in order multiple triggering PAD, this triggering PAD and capacitive sensing MCU chip and is formed and respond to path.Capacitive sensing MCU chip can arrange a standard capacitor-value to each triggering PAD by algorithm process, when liquid level arrives the outer a certain position of monomer column insulation shell, that corresponding capacitance triggered on PAD path can change, now capacitive sensing MCU chip will detect signal, thus through process to reach the object detecting liquid level.
The beneficial effects of the utility model are, level gauging is accurate, structure is simple, use is stable, with low cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the semi-section structural map of condenser type Multiple Liquid Level Instrument embodiment.
Fig. 2 is the A-A cut-open view of Fig. 1.
Fig. 3 is circuit board of the present utility model and device arrangement schematic diagram and side view thereof.
1. monomer column insulation shells in figure, 2. circuit board, 3. colloid, 4. go between, and 5. triggers PAD, 6.MCU chip, 7. O-ring seal, 8. nut.
Embodiment
In FIG, circuit board (2) is inserted and just pours in the monomer column insulation shell (1) of colloid (3) in advance, tangent plane holding circuit plate (2) triggering PAD (5) and monomer column insulation shell (1) in the same side.MCU chip (6) is positioned at the top of circuit board, together submerges in colloid (3) with lead-in wire (4) and the pad of circuit board (2), and lead-in wire (4) is connected with the miscellaneous part of device outside.O-ring seal (7) on monomer column insulation shell (1) and nut (8) effectively and between casing can carry out fit sealing.
In figure 3, the side order of circuit board (2) is arranged multiple triggering PAD (5), MCU chip (6) is positioned at circuit board (2) top, lead-in wire (4) picks out from the top of circuit board (2), and is connected with the miscellaneous part of device outside.
Claims (3)
1. a condenser type Multiple Liquid Level Instrument, colloid is utilized to be encapsulated in monomer column insulation shell by the circuit board of strip to keep triggering PAD and monomer column insulation shell tangent plane homonymy direction, it is characterized in that: on circuit board, there is multiple triggering PAD be disposed in order side, and trigger PAD and capacitive sensing MCU chip and formed and respond to path.
2. condenser type Multiple Liquid Level Instrument according to claim 1, is characterized in that: adopt monomer column insulation shell, there is tangent plane monomer column insulation shell side.
3. condenser type Multiple Liquid Level Instrument according to claim 1, is characterized in that: circuit board triggers PAD and monomer column insulation shell tangent plane is positioned at the same side, and it is inner to use insulation colloid to be encapsulated in monomer column insulation shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406024.2U CN204241068U (en) | 2014-07-22 | 2014-07-22 | Condenser type Multiple Liquid Level Instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406024.2U CN204241068U (en) | 2014-07-22 | 2014-07-22 | Condenser type Multiple Liquid Level Instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241068U true CN204241068U (en) | 2015-04-01 |
Family
ID=52770550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420406024.2U Expired - Fee Related CN204241068U (en) | 2014-07-22 | 2014-07-22 | Condenser type Multiple Liquid Level Instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692791A (en) * | 2018-03-30 | 2018-10-23 | 厦门乐人电子有限公司 | Liquid level detection device and liquid container |
| CN110558835A (en) * | 2019-08-26 | 2019-12-13 | 陈毅强 | Capacitive liquid level detection structure and electric kettle thereof |
| CN111174871A (en) * | 2020-03-17 | 2020-05-19 | 益生瑞(上海)生物科技有限公司 | Liquid level detection device and detection method for hydrogen production equipment |
| GB2584384A (en) * | 2019-02-11 | 2020-12-09 | Aspen Pumps Ltd | Improved liquid sensor |
-
2014
- 2014-07-22 CN CN201420406024.2U patent/CN204241068U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692791A (en) * | 2018-03-30 | 2018-10-23 | 厦门乐人电子有限公司 | Liquid level detection device and liquid container |
| GB2584384A (en) * | 2019-02-11 | 2020-12-09 | Aspen Pumps Ltd | Improved liquid sensor |
| GB2584384B (en) * | 2019-02-11 | 2021-12-08 | Aspen Pumps Ltd | Improved liquid sensor |
| US11971287B2 (en) | 2019-02-11 | 2024-04-30 | Aspen Pumps Limited | Liquid sensor |
| CN110558835A (en) * | 2019-08-26 | 2019-12-13 | 陈毅强 | Capacitive liquid level detection structure and electric kettle thereof |
| CN111174871A (en) * | 2020-03-17 | 2020-05-19 | 益生瑞(上海)生物科技有限公司 | Liquid level detection device and detection method for hydrogen production equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shen Yuehong Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Shen Yuehong Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20150722 |
|
| EXPY | Termination of patent right or utility model |