CN107860437A - A kind of circular pipe type liquid level sensor - Google Patents
A kind of circular pipe type liquid level sensor Download PDFInfo
- Publication number
- CN107860437A CN107860437A CN201711365216.8A CN201711365216A CN107860437A CN 107860437 A CN107860437 A CN 107860437A CN 201711365216 A CN201711365216 A CN 201711365216A CN 107860437 A CN107860437 A CN 107860437A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- electrode
- polymer material
- high polymer
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 93
- 239000002861 polymer material Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 229920002521 macromolecule Polymers 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 13
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a kind of circular pipe type liquid level sensor, including liquid level acquisition system, data handling system and liquid level display system, the liquid level acquisition system includes high polymer material pipe, metal electrode, diode, resistance, wire and seal pipe, and the high polymer material pipe and metal electrode are sealed in seal pipe；The metal electrode is attached to high polymer material tube outer surface.The liquid level acquisition system of the present invention passes through encapsulation process, without additional power source, by external circuit by the induced signal of internal friction nano generator, resistance is reached by circuit, current signal is converted to voltage signal output by resistance, for data handling system by the voltage change at monitoring resistor both ends, micro-control unit analyzes and processes voltage signal into liquid level signal, and is transferred in liquid level display system and shows liquid level.Liquid level lifting fluctuation is converted to voltage signal output by the present invention, and the lifting position of liquid level is may determine that according to the change of the waveform of its voltage signal.
Description
Technical field
The present invention relates to intelligent sensing field, more particularly to a kind of circular pipe type liquid level sensor for level sensing.
Background technology
Development based on current world's Internet of Things and big data, has increasing need for more intelligentized sensor.And
Intelligence control system and data collecting system turn into the main support of Internet of Things development.Data are be unable to do without in intelligence control system
Acquisition system, and data collecting system be unable to do without intelligence sensor.
The form of intelligence sensor has varied at present, and the sensor for being related to level sensing also has many forms, still
Sensor in the market can not realize self energizing in monitoring terminal, most of using mains-supplied monitoring terminal, the sun
Can be powered monitoring terminal, battery powered monitoring terminal etc.；For the liquid level with larger height change, its monitoring terminal power supply phase
To more difficult, and then the application for sensor has larger limitation.
The content of the invention
In view of defects in the prior art, the invention aims to provide one kind to power up outside monitoring terminal
The circular pipe type liquid level sensor in source.
To achieve these goals, the technical scheme is that：
A kind of circular pipe type liquid level sensor, including liquid level acquisition system, data handling system and liquid level display system, it is described
Liquid level acquisition system is connected by data line with data handling system；The data handling system and liquid level display system phase
Even.The data handling system includes signal measurement modulate circuit and micro-control unit.
The liquid level acquisition system includes high polymer material pipe, metal electrode, diode, resistance, wire and seal pipe, institute
State high polymer material pipe and metal electrode is sealed in seal pipe；
The metal electrode includes distributed electrode and main electrode, and distributed electrode has multiple, and main electrode only has one.
The metal electrode is attached to high polymer material tube outer surface；
The distributed electrode is axially uniformly distributed along on the outside of high polymer material pipe；
The distributed electrode with Diode series, is connected after the diodes in parallel with one end of resistance respectively, described
The other end connection main electrode of resistance.
Further, the distributed electrode forms electrode pair with main electrode respectively.
Further, it is spaced between each electrode of the distributed electrode identical.
Further, the high polymer material pipe is polyfluortetraethylene pipe, nylon tube, silicone tube or polyimide tube, institute
It is copper electrode, aluminium electrode or gold electrode to state metal electrode.
Further, the metal electrode is in strip, circumferentially smooth in high polymer material pipe along high polymer material pipe
Outer surface.
Further, the metal electrode is around one week arrangement of high polymer material tube outer surface or one section of arrangement.
Further, the input connection of the distributed electrode and diode, the output end and resistance of the diode
It is connected.
Further, the seal pipe is vertically arranged in surveyed liquid, data handling system and liquid level the display system
System is in beyond liquid.
Further, the method for work of the data handling system, comprises the following steps：
A, signal measurement modulate circuit is transported to micro-control unit after handling voltage signal caused by resistance both ends；
B, micro-control unit analyzes and processes voltage signal into liquid level signal, and is transferred in liquid level display system and shows liquid
Position.
Compared with prior art, the invention has the advantages that：
1st, the present invention is made up of based on friction electric induction polytetrafluoroethylene (PTFE) Polymer material, liquid, metal electrode
Friction nanometer power generator, friction nanometer power generator is formed into liquid level acquisition system, i.e. monitoring of the invention after encapsulation process
Terminal.Monitoring terminal is passed through into encapsulation process, believed the sensing of monitoring terminal internal friction nano generator by external circuit
Number, resistance is reached by circuit, current signal is converted to voltage signal and exported by resistance, and data handling system passes through monitoring resistor
The voltage change at both ends, micro-control unit analyzes and processes voltage signal into liquid level signal, and is transferred in liquid level display system
Show liquid level.Liquid level lifting fluctuation is converted to voltage signal output by the present invention, can be with according to the change of the waveform of its voltage signal
Judge the lifting position of liquid level.
2nd, the present invention is applied to level sensing, is a kind of letter that can realize self energizing i.e. at sensing element in monitoring terminal
Number harvester, without additional power source at monitoring terminal, signal output is that a kind of liquid level of high stability passes substantially and stably
Sensor.The sensor is the development for realizing Internet of Things and big data, there is provided key technology solution.
3rd, liquid level sensor of the invention can judge it using the size of resistance both end voltage signal in external circuit
Liquid level position and the situation of liquid level raising and lowering.
4th, pipe of the invention can also be replaced with the pipe of other shapes.
Brief description of the drawings
Fig. 1 is the sensing element internal structure schematic diagram of the present invention.
Fig. 2 is the sensing element sectional view of the present invention.
Fig. 3 is that liquid level rises electronics transfer schematic diagram.
Fig. 4 is that liquid level declines electronics transfer schematic diagram.
Fig. 5 is that liquid level gauge is used for level sensing schematic diagram.
Fig. 6 is signal transacting, display system flow chart.
In figure：1st, main electrode；2nd, high polymer material pipe；3rd, distributed electrode；4th, seal pipe；5th, liquid；6th, diode；7、
Wire；8th, resistance；9th, data line；10th, data handling system；11st, liquid level display system；12nd, signal measurement modulate circuit；
13rd, micro-control unit.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As shown in figures 1 to 6, a kind of circular pipe type liquid level sensor, including liquid level acquisition system, data handling system 10 and liquid
Position display system 11, the liquid level acquisition system are connected by data line 9 with data handling system 10；The data processing
System 10 is connected with liquid level display system 11.The data handling system 10 includes signal measurement modulate circuit 12 and microcontroller list
Member 13.
The liquid level acquisition system includes high polymer material pipe 2, metal electrode, diode 6, resistance 8, wire 7 and sealing
Pipe 4, the high polymer material pipe 2 and metal electrode are sealed in seal pipe 4；
The metal electrode includes distributed electrode 3 and main electrode 1, and distributed electrode 3 has multiple, main electrode 1 only one
It is individual.
The metal electrode is attached to the outer surface of high polymer material pipe 2；
The distributed electrode 3 is axially uniformly distributed along the outside of high polymer material pipe 2；
The distributed electrode 3 is connected with diode 6 respectively, is connected after the parallel connection of diode 6 with one end of resistance 8,
The other end connection main electrode 1 of the resistance 8.
Further, the distributed electrode 3 forms electrode pair with main electrode 1 respectively.
Further, it is spaced between each electrode of the distributed electrode 3 identical.
Further, the high polymer material pipe 2 is polyfluortetraethylene pipe, nylon tube, silicone tube or polyimide tube, institute
It is copper electrode, aluminium electrode or gold electrode to state metal electrode.
Further, the metal electrode is in strip, circumferential smooth in high polymer material pipe along high polymer material pipe 2
2 outer surfaces.
Further, the metal electrode is around 2 outer surface of high polymer material pipe, one week arrangement or one section of arrangement.
Further, the distributed electrode 3 is connected with the input of diode 6, output end and the electricity of the diode 6
Resistance 8 is connected.
Further, the seal pipe 4 is vertically arranged in surveyed liquid 5, and the data handling system 10 and liquid level show
Show that system 11 is in beyond liquid 5.
Further, the method for work of the data handling system 10, comprises the following steps：
C, signal measurement modulate circuit 12 is transported to microcontroller list after handling voltage signal caused by the both ends of resistance 8
Member 13；
D, micro-control unit 13 analyzes and processes voltage signal into liquid level signal, and is transferred in liquid level display system 11 and shows
Show liquid level.
The operation principle of the present invention is as follows：
For the present invention using the electrostatic induction between liquid 5 and high polymer material, its principle is a kind of based on friction electric induction
Solid-liquid contact it is powered.Diode 6 and resistance 8 that powered caused charge inducing passes through in external circuit are contacted, can be existed
The both ends of resistance 8 form the single DC voltage in direction, by the size of the both ends DC voltage of detection resistance 8, to judge its process
The current branch number of resistance 8, and then to realize the real-time detection of specific liquid level.
During present invention work, liquid level acquisition system is vertically put into surveyed liquid 5, surveys liquid 5 in high polymer material
Flowed in pipe 2, and the outer liquid of pipe forms law of connected vessels.Liquid level is identical with surveyed liquid level holding all the time in high polymer material pipe 2.
Liquid 5 contacts with polymer surface, friction electric induction be present, forms the powered principle of solid-liquid contact.Polymer surface
It is negatively charged, hydrone surface positively charged.Due to electrode one end with negatron and the other end does not have negatron, so it is high
Molecular material surface negative electricity flows to diode 6 and resistance 8 by pipe external distributed electrode 3, and then is transferred to main electrode 1, energy
Corresponding voltage signal is detected at the both ends of resistance 8.When liquid level raises, the distributed electrode 3 for surveying 5 mediate contacts of liquid is got over
More, the quantity of electric charge shifted to main electrode 1 is bigger, bigger in the voltage that the both ends of resistance 8 are formed.When liquid level reduces, liquid 5 is surveyed
The electrode of institute's mediate contact tails off, and the quantity of electric charge shifted to main electrode 1 reduces, and diminishes in the voltage that the both ends of resistance 8 are formed.Work as liquid
When position remains unchanged, its both end voltage of resistance 8 remains unchanged.I.e. by the size waveforms of the both end voltage value of resistance 8, can know
Liquid level touches the position of high polymer material, and then knows the situation of liquid level, so as to realize level sensing.
The present invention is not limited to the present embodiment, any equivalent concepts in the technical scope of present disclosure or changes
Become, be classified as protection scope of the present invention.
Claims (9)
- A kind of 1. circular pipe type liquid level sensor, it is characterised in that：Including liquid level acquisition system, data handling system (10) and liquid level Display system (11), the liquid level acquisition system are connected by data line (9) with data handling system (10)；The data Processing system (10) is connected with liquid level display system (11)；The data handling system (10) includes signal measurement modulate circuit And micro-control unit (13) (12)；The liquid level acquisition system include high polymer material pipe (2), metal electrode, diode (6), resistance (8), wire (7) and Seal pipe (4), the high polymer material pipe (2) and metal electrode are sealed in seal pipe (4)；The metal electrode includes distributed electrode (3) and main electrode (1), and distributed electrode (3) has multiple, main electrode (1) There is one；The metal electrode is attached to high polymer material pipe (2) outer surface；The distributed electrode (3) is axially uniformly distributed along on the outside of high polymer material pipe (2)；The distributed electrode (3) is connected with diode (6) respectively, and one end after the diode (6) is in parallel with resistance (8) connects Connect, the other end connection main electrode (1) of the resistance (8).
- A kind of 2. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The distributed electrode (3) point Electrode pair is not formed with main electrode (1).
- A kind of 3. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The distributed electrode (3) It is spaced between each electrode identical.
- A kind of 4. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The high polymer material pipe (2) For polyfluortetraethylene pipe, nylon tube, silicone tube or polyimide tube, the metal electrode is copper electrode, aluminium electrode or gold electrode.
- A kind of 5. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The metal electrode is in strip Shape, it is circumferential smooth in high polymer material pipe (2) outer surface along high polymer material pipe (2).
- A kind of 6. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The metal electrode is around macromolecule The one week arrangement in tubes of material (2) outer surface or one section of arrangement.
- A kind of 7. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The distributed electrode (3) with The input connection of diode (6), the output end of the diode (6) are connected with resistance (8).
- A kind of 8. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The seal pipe (4) is vertically put In surveyed liquid (5), the data handling system (10) and liquid level display system (11) are in beyond liquid (5).
- A kind of 9. circular pipe type liquid level sensor according to claim 1, it is characterised in that：The data handling system (10) Method of work, comprise the following steps：A, signal measurement modulate circuit (12) is transported to microcontroller list after handling voltage signal caused by resistance (8) both ends First (13)；B, micro-control unit (13) analyzes and processes voltage signal into liquid level signal, and is transferred in liquid level display system (11) and shows Show liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365216.8A CN107860437A (en) | 2017-12-18 | 2017-12-18 | A kind of circular pipe type liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365216.8A CN107860437A (en) | 2017-12-18 | 2017-12-18 | A kind of circular pipe type liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107860437A true CN107860437A (en) | 2018-03-30 |
Family
ID=61706395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711365216.8A Pending CN107860437A (en) | 2017-12-18 | 2017-12-18 | A kind of circular pipe type liquid level sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN107860437A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692713A (en) * | 2018-08-01 | 2018-10-23 | 大连海事大学 | A kind of wave monitoring system and its working method |
| CN110353589A (en) * | 2019-07-15 | 2019-10-22 | 珠海格力电器股份有限公司 | A kind of liquid level detection device, detection method and dish-washing machine |
| CN111307247A (en) * | 2019-02-26 | 2020-06-19 | 北京纳米能源与系统研究所 | Self-powered water level monitoring device and monitoring method |
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| CN207540629U (en) * | 2017-12-18 | 2018-06-26 | 大连海事大学 | A kind of circular pipe type liquid level sensor |
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2017
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Application publication date: 20180330 |