CN205981364U - Capacitive gauge - Google Patents
Capacitive gauge Download PDFInfo
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- CN205981364U CN205981364U CN201620938397.3U CN201620938397U CN205981364U CN 205981364 U CN205981364 U CN 205981364U CN 201620938397 U CN201620938397 U CN 201620938397U CN 205981364 U CN205981364 U CN 205981364U
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- capacitor plate
- plate group
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- liquid level
- level value
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Abstract
The utility model discloses a capacitive gauge, including liquid level metering head, fix first capacitor plate group and second capacitor plate group at the first lower extreme of liquid level metering, first capacitor plate group and second capacitor plate component do not be for flat -plate -shaped and just to the parallel, first capacitor plate group and second capacitor plate component do not include multistage polar plate from bottom to top, first capacitor plate organize with second capacitor plate fabric from bottom to top multistage electric capacity cheng, be equipped with the minimum system of singlechip in the liquid level metering head, the AC excitation function of current produces a plurality of output voltage that correspond in each section electric capacity, and a plurality of output voltage are connected to the minimum system of singlechip through taking care of amplifier circuit, and the magnitude of voltage of amplifier circuit output is taked care of through the AD conversion module measurement by the minimum system of singlechip, and the minimum system of singlechip is through showing that screen display shows liquid level value. The utility model provides a can measure high, the high capacitive gauge of security of liquid level, accuracy of the uncertain medium that awaits measuring of dielectric constant.
Description
Technical field
This utility model is related to a kind of capacitance level gauge, belongs to the board-like capacitance liquid level meter of mean pole.
Background technology
Capacitance level gauge is the biography being measured using the principle of liquid level height change impact condenser capacity size
Sensor.The version of conventional condenser liquidometer has many kinds, and such as mean pole is board-like, concentric circular pillar etc..Condenser type liquid
Widely, the requirement to testing medium nature is strict unlike other class sensors, to conduction for the position meter scope of application
Medium and non-conductive medium can measure liquid level, can also measure the liquid level of the container having Liquid sloshing and high-speed motion in addition.
The premise of conventional condenser level gauging is that testing medium dielectric constant keeps constant, but the dielectric of such as crude oil
Constant is affected by various factors such as material component, moisture, temperature, and its value changes within the specific limits, does not have Jie determining
Electric constant can give.Because the level gauging of capacitance level gauge needs to use dielectric constant, therefore lead to level gauging
Accuracy is not high, and this is the main source of the measurement error of conventional condenser liquidometer, which limit conventional condenser liquidometer
Promotion and application in practice.
On this basis, being born can be with the sectional capacitor type liquid of the liquid level of the uncertain testing medium of Measuring Dielectric Constant
Position meter.As Chinese patent 20112015226 discloses a kind of sectional capacitor type liquidometer, its weak point is a lack of alarm module
And setting the key-press module that alarm module is used for the limit liquid level value of warning, during use, safety is not high.
Content of the invention
For overcoming the above-mentioned deficiency of prior art, the utility model proposes one kind can be uncertain with Measuring Dielectric Constant
High, the safe capacitance level gauge of the liquid level of testing medium, accuracy of measurement.
In order to solve above-mentioned technical problem, this utility model adopts following technical scheme：
Capacitance level gauge, including liquidometer gauge outfit, the first vertically arranged electric capacity of being fixed on liquidometer gauge outfit lower end
Pole plate group and the second capacitor plate group, the first capacitor plate group and the second capacitor plate group are respectively tabular and just to parallel,
First capacitor plate group and the second capacitor plate group include multistage pole plate from bottom to top respectively, one section of the first capacitor plate group
One arranged side by side with it section pole plate of pole plate and the second capacitor plate group constitutes one section of electric capacity, and two pole plates of each section of electric capacity are just reciprocity
Long, then the first capacitor plate group and the second capacitor plate group composition multistage electric capacity from bottom to top；
It is provided with single-chip minimum system, the ac-excited function of current produces in above-mentioned each section of electric capacity in described liquidometer gauge outfit
Corresponding multiple output voltage, multiple output voltages are connected to single-chip minimum system by nursing one's health amplifying circuit, and single-chip microcomputer is
Mini system passes through the magnitude of voltage of A/D modular converter measurement conditioning amplifying circuit output, can be in the hope of each section of electricity according to this magnitude of voltage
The capacitance holding, single-chip minimum system shows level value by display screen, and display location is in described liquidometer gauge outfit；
It is additionally provided with alarm module, single-chip minimum system connects this alarm module, in single-chip microcomputer in described liquidometer gauge outfit
Prestore in minimum system the limit liquid level value of liquid filled container, when the level value of measurement reaches the limit liquid level value of liquid filled container,
Single-chip minimum system controls alarm module to send alarm；
It is additionally provided with key-press module, single-chip minimum system connects this key-press module, key-press module in described liquidometer gauge outfit
Set the limit liquid level value for warning of described alarm module for user, the limit liquid level value of warning also can be by described aobvious
Display screen touch-screen input.
The limit liquid level value of described alarm module includes upper limit level value and bottom limit level value, when liquid level rises to upper limit liquid
Place value, alarm module sends alarm, to avoid spilling risk；When liquid level drops to bottom limit level value, alarm module
Send alarm, to point out liquid level not enough.
Preferably, being additionally provided with communication module in described liquidometer gauge outfit, single-chip minimum system connects this communication module,
Single-chip minimum system is communicated with host computer by this communication module, and the level value that measurement is obtained is sent to host computer.
Further, the bottom face of the first capacitor plate group and the second capacitor plate group has been fixedly connected with the of reinforcement effect
A connection piece；The top of the top pole plate of the first capacitor plate group and the second capacitor plate group has been fixedly connected with reinforcement effect
The second connector；The position of the first connector and the second connector avoids the use area of multistage electric capacity, to avoid impact to survey
Amount.
Described first connector and the second connector are horizontal plate, and the first connector is vertical with the pole plate of both sides to be connected,
Second connector is vertical with the pole plate of both sides to be connected；The first connector using horizontal plate can play bottom face supporting role.
The beneficial effects of the utility model are：
1st, compact conformation, using reliability, can be with the liquid level of the uncertain testing medium of Measuring Dielectric Constant, accuracy of measurement
Greatly improve compared with conventional condenser liquidometer；
2nd, be provided with alarm module and can set alarm module for report to the police limit liquid level value key-press module, can keep away
Exempt to occur to overflow risk, or can be used for pointing out liquid level not enough, safe.
Brief description
Fig. 1 is the three-dimensional structure diagram of this utility model capacitance level gauge embodiment.
Fig. 2 is the circuit block diagram of this utility model capacitance level gauge embodiment.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and embodiment party
Formula, is described in further detail to this utility model it will be appreciated that embodiment described herein is only used for being specifically described this reality
With new, do not constitute to restriction of the present utility model.
Fig. 1 is the three-dimensional structure diagram of capacitance level gauge embodiment.Capacitance level gauge, including liquidometer gauge outfit 1, fixes
In the first vertically arranged capacitor plate group 2 and the second capacitor plate group 3 of liquidometer gauge outfit 1 lower end, the first capacitor plate group 2
It is respectively tabular with the second capacitor plate group 3 and just to parallel, the first capacitor plate group 2 and the second capacitor plate group 3 are respectively
Including multistage pole plate 21 from bottom to top, one section of pole plate 21 of the first capacitor plate group 2 and the second capacitor plate group 3 with it simultaneously
One section of pole plate 21 of row constitutes one section of electric capacity, and two pole plates 21 of each section of electric capacity are just to isometric, then the first capacitor plate group 2 He
Second capacitor plate group 3 constitutes multistage electric capacity from bottom to top.
The bottom face of the first capacitor plate group 2 and the second capacitor plate group 3 has been fixedly connected with the first company of reinforcement effect
Fitting 41；The top of the top pole plate of the first capacitor plate group 2 and the second capacitor plate group 3 has been fixedly connected with reinforcement effect
The second connector 42；The position of the first connector 41 and the second connector 42 avoids the use area of multistage electric capacity, to avoid
Impact measurement.
Described first connector 41 and the second connector 42 are horizontal plate, and the first connector 41 is vertical with the pole plate of both sides
Connect, the second connector 42 is vertical with the pole plate of both sides to be connected；The first connector 41 using horizontal plate can play bottom face
Supporting role.
In the present embodiment, the multistage electric capacity from bottom to top of the first capacitor plate group 2 and the second capacitor plate group 3 composition
Pole plate length is identical, and the pole plate length of each section of electric capacity is h0.The pole plate length of each section of electric capacity can also differ.
In the present embodiment, the top positioned at all pole plates of described first capacitor plate group 2 and the second capacitor plate group 3
Position is supporting part 22.
Fig. 2 is the circuit block diagram of the present embodiment capacitance level gauge.It is provided with single-chip microcomputer minimum in described liquidometer gauge outfit 1
System, alarm module, communication module, power module, liquidometer gauge outfit 1 is provided with display screen, key-press module；
The ac-excited function of current is in above-mentioned each section of electric capacity（Each section of multistage electric capacity）Produce corresponding multiple output electricity
Pressure, multiple output voltages are connected to single-chip minimum system by nursing one's health amplifying circuit, and single-chip minimum system is changed by A/D
The magnitude of voltage of module measurement conditioning amplifying circuit output, can be in the hope of the capacitance of each section of electric capacity, single-chip microcomputer according to this magnitude of voltage
Minimum system shows level value by LCDs, and LCDs are located in described liquidometer gauge outfit；
Under the ac-excited function of current, the output voltage of the capacitance of each section of electric capacity and each section of electric capacity is corresponding relation, according to
The magnitude of voltage that single-chip minimum system records can try to achieve the capacitance of each section of electric capacity；
In the present embodiment, ac-excited electric current passes through its D/A modular converter by single-chip minimum system and produces, and can assist a ruler in governing a country
To optimize circuit, ac-excited electric current can also be produced by external electronic circuits.
Described single-chip minimum system is also connected with alarm module, the limit of the liquid filled container that prestores in single-chip minimum system
Level value, when the level value of measurement reaches the limit liquid level value of liquid filled container, single-chip minimum system controls alarm module to send out
Go out alarm；
In the present embodiment, the limit liquid level value of described alarm module includes upper limit level value and bottom limit level value, works as liquid level
Rise to upper limit level value, alarm module sends alarm, to avoid spilling risk；When liquid level drops to bottom limit level
Value, alarm module also sends alarm, to point out liquid level not enough；The limit liquid level value of alarm module also can only include upper limit liquid
One of place value and bottom limit level value；
Described single-chip minimum system is also connected with this key-press module, and key-press module is used for user and sets described alarm module
Upper limit level value for warning and bottom limit level value, the upper limit level value of warning and bottom limit level value also can be by described displays
Screen touch-screen input；Above-mentioned key-press module and alarm module can also be set as not working；
Described single-chip minimum system is also connected with this communication module, single-chip minimum system pass through this communication module with upper
Machine is communicated, and the level value that measurement is obtained is sent to host computer.
During the liquid level of the uncertain testing medium of Measuring Dielectric Constant, take the dielectric of each section of electric capacity being totally immersed in medium
The meansigma methodss of constant are the dielectric constant of the capacitance sections being partly submerged in medium, obtain level value further.
In a word, the foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Modification, equivalent and improvement of being made within the spirit of utility model and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (9)
1. capacitance level gauge it is characterised in that：Including liquidometer gauge outfit, it is fixed on the vertically arranged of liquidometer gauge outfit lower end
First capacitor plate group and the second capacitor plate group, the first capacitor plate group and the second capacitor plate group are respectively tabular and just
To parallel, the first capacitor plate group and the second capacitor plate group include multistage pole plate from bottom to top, the first capacitor plate respectively
One arranged side by side with it section pole plate of one section of pole plate of group and the second capacitor plate group constitutes one section of electric capacity, two poles of each section of electric capacity
Plate is just to isometric, then the first capacitor plate group and the second capacitor plate group composition multistage electric capacity from bottom to top；
It is provided with single-chip minimum system, the ac-excited function of current produces in above-mentioned each section of electric capacity and corresponds in described liquidometer gauge outfit
Multiple output voltages, multiple output voltages connect to single-chip minimum system by nursing one's health amplifying circuit, the minimum system of single-chip microcomputer
System, can be in the hope of each section of electric capacity according to this magnitude of voltage by the magnitude of voltage of A/D modular converter measurement conditioning amplifying circuit output
Capacitance, single-chip minimum system shows level value by display screen, and display location is in described liquidometer gauge outfit；
It is additionally provided with alarm module, single-chip minimum system connects this alarm module in described liquidometer gauge outfit, minimum in single-chip microcomputer
Prestore in system the limit liquid level value of liquid filled container, when the level value of measurement reaches the limit liquid level value of liquid filled container, monolithic
Machine minimum system controls alarm module to send alarm；
It is additionally provided with key-press module, single-chip minimum system connects this key-press module, key-press module is used in described liquidometer gauge outfit
User sets the limit liquid level value for warning of described alarm module, and the limit liquid level value of warning also can pass through described display screen
Touch-screen input.
2. capacitance level gauge as claimed in claim 1 it is characterised in that：It is additionally provided with communication mould in described liquidometer gauge outfit
Block, single-chip minimum system connects this communication module, and single-chip minimum system is communicated with host computer by this communication module,
The level value that measurement is obtained is sent to host computer.
3. capacitance level gauge as claimed in claim 1 it is characterised in that：First capacitor plate group and the second capacitor plate group
Bottom face be fixedly connected with the first connector of reinforcement effect, the position of the first connector avoids the use of multistage electric capacity
Area.
4. capacitance level gauge as claimed in claim 3 it is characterised in that：First capacitor plate group and the second capacitor plate group
The top of the top pole plate be fixedly connected with the second connector of reinforcement effect, the position of the second connector avoids multistage
The use area of electric capacity.
5. the capacitance level gauge as described in one of claim 1-4 it is characterised in that：Described first capacitor plate group and second
The pole plate length of the multistage electric capacity that capacitor plate group is constituted is identical.
6. the capacitance level gauge as described in one of claim 1-4 it is characterised in that：Described first capacitor plate group and second
The position above all pole plates of capacitor plate group is supporting part.
7. capacitance level gauge as claimed in claim 4 it is characterised in that：Described first connector and the second connector are water
Average plate, the first connector is vertical with the pole plate of both sides to be connected, and the second connector is vertical with the pole plate of both sides to be connected；Using level
First connector of flat board can play bottom face supporting role.
8. capacitance level gauge as claimed in claim 1 it is characterised in that：The limit liquid level value of described alarm module includes
Limit level value and bottom limit level value, when liquid level rises to upper limit level value, alarm module sends alarm, to avoid spilling
Risk；When liquid level drops to bottom limit level value, alarm module also sends alarm, to point out liquid level not enough.
9. capacitance level gauge as claimed in claim 1 it is characterised in that：Described ac-excited electric current is by the minimum system of single-chip microcomputer
System is produced by its D/A modular converter, and ac-excited electric current can also be produced by external electronic circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620938397.3U CN205981364U (en) | 2016-08-25 | 2016-08-25 | Capacitive gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620938397.3U CN205981364U (en) | 2016-08-25 | 2016-08-25 | Capacitive gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205981364U true CN205981364U (en) | 2017-02-22 |
Family
ID=58034878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620938397.3U Active CN205981364U (en) | 2016-08-25 | 2016-08-25 | Capacitive gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205981364U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629616A (en) * | 2021-01-05 | 2021-04-09 | 华南农业大学 | Material level detection device and material level detection method for unmanned aerial vehicle medicine chest |
| CN113503939A (en) * | 2021-08-23 | 2021-10-15 | 石河子大学 | Non-contact type box material level real-time monitoring system |
| CN115979377A (en) * | 2022-12-30 | 2023-04-18 | 安图实验仪器(郑州)有限公司 | Liquid level detection device and system |
-
2016
- 2016-08-25 CN CN201620938397.3U patent/CN205981364U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629616A (en) * | 2021-01-05 | 2021-04-09 | 华南农业大学 | Material level detection device and material level detection method for unmanned aerial vehicle medicine chest |
| CN113503939A (en) * | 2021-08-23 | 2021-10-15 | 石河子大学 | Non-contact type box material level real-time monitoring system |
| CN115979377A (en) * | 2022-12-30 | 2023-04-18 | 安图实验仪器(郑州)有限公司 | Liquid level detection device and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |