CN108072422A - A kind of net taste machine of liquid level detection device and the application device - Google Patents
A kind of net taste machine of liquid level detection device and the application device Download PDFInfo
- Publication number
- CN108072422A CN108072422A CN201711485624.7A CN201711485624A CN108072422A CN 108072422 A CN108072422 A CN 108072422A CN 201711485624 A CN201711485624 A CN 201711485624A CN 108072422 A CN108072422 A CN 108072422A
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- liquid level
- capacitance
- detection
- direct
- detection device
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- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000006698 induction Effects 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000001939 inductive effect Effects 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 239000011889 copper foil Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004887 air purification Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 101150037009 pin1 gene Proteins 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 101001024685 Pandinus imperator Pandinin-2 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 239000002994 raw material Substances 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
- G01F23/26—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 by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses the net taste machines of a kind of liquid level detection device and the application device, including induction electrode, capacitor charge and discharge circuit, capacitive detection circuit and controller, the induction electrode forms direct-to-ground capacitance and for the state of non-contact inductive fixed-point liquid level to be measured with the earth, capacitive detection circuit is equipped with detection capacitance, the controller periodically carries out charge and discharge with fixed frequency by capacitor charge and discharge circuit to the direct-to-ground capacitance, it charges during the direct-to-ground capacitance electric discharge to the detection capacitance, when the voltage of the detection capacitance rises to setting value, the controller judges whether there is liquid status at the fixed-point liquid level to be measured by calculating number of recharge cycles.Testing principle of the detection device based on capacitive sensing, using contactless multistage level sensing mode, intelligent recognition is securely and reliably, convenient and practical.Net taste machine can realize high water tank intelligent detecting, monitoring and adjusting function, convenient for controlling mixed liquor proportioning control accuracy.
Description
Technical field
The present invention relates to Technology of Level Detection field, more particularly, to a kind of liquid level detection device and using the net of the device
Taste machine.
Background technology
Galenical deodorizer refers to form as main Raw material processing using natural plant extraction liquid or natural plant extracts
Deodorant, galenical deodorizer is generally divided into the processing of stink cover type, breakdown type and comprehensive three types, has sky
Gas purification function.The plant liquid container for injecting galenical deodorizer is arranged on to the cabinet inside of net taste machine, extraction plant type removes
Water tank in smelly dose of injection cabinet forms mixed liquor, and air purification is carried out by spraying, safe and convenient to use, is beneficial to various
Communal toilet, toilet area promote and apply.Wherein, the liquid level needs in water tank are monitored, and are made convenient for controlling in real time
With situation and for obtaining moisture storage capacity, with control with the matched proportion density of galenical deodorizer, realize automation level detection,
Monitoring and mixed liquor proportioning adjusting function.
The content of the invention
The present invention in view of the deficiencies of the prior art, should the technical problem to be solved is that a kind of liquid level detection device is provided
Testing principle of the detection device based on capacitive sensing, using contactless multistage level sensing mode, intelligent recognition safely may be used
It leans on, it is convenient and practical.
A kind of net taste machine of application device is also provided, can realize high water tank intelligent detecting, monitoring and adjusting function,
Convenient for controlling mixed liquor proportioning control accuracy.
The present invention is to be addressed above-mentioned technical problem by the following technical programs.
A kind of liquid level detection device, including induction electrode, capacitor charge and discharge circuit, capacitive detection circuit and controller, institute
It states induction electrode and forms direct-to-ground capacitance and with the earth for the state of non-contact inductive fixed-point liquid level to be measured, capacitance detecting electricity
Road is equipped with detection capacitance, and the controller periodically carries out the direct-to-ground capacitance with fixed frequency by capacitor charge and discharge circuit
Charge and discharge charge to the detection capacitance when direct-to-ground capacitance discharges, and are set when the voltage of the detection capacitance rises to
During definite value, the controller judges whether there is liquid status at the fixed-point liquid level to be measured by calculating number of recharge cycles.
Preferably, the induction electrode is stainless steel, copper foil or iron plate.
Preferably, the induction electrode be equipped with it is multiple and for different fixed-point liquid levels to be measured.
Preferably, the capacitor charge and discharge circuit is equipped with charge switch and discharge switch, when the charge switch is closed
And the discharge switch charges to the direct-to-ground capacitance when disconnecting, when the charge switch disconnects and the discharge switch
During closure, charged by the direct-to-ground capacitance to the detection capacitance.
Preferably, the direct-to-ground capacitance charges to the detection capacitance through trsanscondutance amplifier.
Preferably, the controller calculates number of recharge cycles by counter and carries out threshold value comparison by comparing device
To judge whetheing there is liquid status at the fixed-point liquid level to be measured.
Net taste machine, the cabinet inside of net taste machine are equipped with plant liquid container, atomizer and water tank, and the plant liquid container is used for
Galenical deodorizer of the injection with air purification function extracts the galenical deodorizer injection from the plant liquid container
The water tank forms mixed liquor, and the mixed liquor is discharged by the atomizer spray, and the water tank is provided with the liquid level
Detection device, the induction electrode are arranged on the state that non-contact inductive high water tank is used on the outer wall of the water tank.
Preferably, the cabinet inside is equipped with master control borad, display screen and power supply system, the controller is controlled by
The master control borad simultaneously exports fluid level condition signal by the display screen.
Preferably, multiple induction electrodes are accordingly arranged on the different height position of the tank outer wall to examine
Survey multistage liquid level.
To sum up, the liquid level detection device of the present invention is based on capacitance induction principle, using contactless continuity multistage
Level sensing mode, measurement is accurate, in real time effective level monitoring changing condition, and safer clean, more convenient practicality can also be prevented
Burn into is anti-pollution, and circuit structure is simple, of low cost, has huge application value.
It is high using the net taste machine intelligence degree of the device, realize the automatic monitor and detection of high water tank, precision is high, convenient for the palm
Control and the matched proportion density of galenical deodorizer realize automation level detection, monitoring and mixed liquor proportioning adjusting function.
Description of the drawings
It is intended to, convenient for description preferred embodiment, not form limiting the scope of the invention in conjunction with the following drawings.
Fig. 1 is the principle schematic of the embodiment of the present invention；
Fig. 2 is that have liquid and the charging process schematic diagram under aneroid situation.
Specific embodiment
In order to facilitate understand the present invention, below in conjunction with the accompanying drawings in provide the present invention preferred embodiment to the present invention into
The detailed description of row.
A kind of liquid level detection device of the present invention, including induction electrode, capacitor charge and discharge circuit, capacitive detection circuit and control
Device processed, the induction electrode is using all conductive materials of such as stainless steel, copper foil or iron plate.The induction electrode and the earth
Form direct-to-ground capacitance and for the state of non-contact inductive fixed-point liquid level to be measured, it is described in order to realize multistage level gauging
Induction electrode can set multiple and for different fixed-point liquid levels to be measured.Capacitive detection circuit is equipped with detection capacitance, the control
Device processed periodically carries out charge and discharge with fixed frequency by capacitor charge and discharge circuit to the direct-to-ground capacitance, and the direct-to-ground capacitance is put
It charges when electric to the detection capacitance, specifically, the capacitor charge and discharge circuit is equipped with charge switch and discharge switch,
When the charge switch is closed and the discharge switch disconnects, charge to the direct-to-ground capacitance, when the charge switch
When disconnection and discharge switch closure, charged by the direct-to-ground capacitance to the detection capacitance, it is further, described
Direct-to-ground capacitance charges to the detection capacitance through trsanscondutance amplifier.When the voltage of the detection capacitance rises to setting value
When, the controller judges whether there is liquid status at the fixed-point liquid level to be measured by calculating number of recharge cycles, specifically
It says, the controller calculates number of recharge cycles by counter and compared by comparing device progress threshold value described to be measured to judge
Liquid status are whether there is at amount fixed-point liquid level.
Referring to Fig. 1, in one embodiment, using copper foil direct-to-ground capacitance Ci, by P1 (charge switch) and P2, (electric discharge is opened
Closing) with the non-overlapped open and close of fixed frequency, P2 is disconnected two switches when P1 is closed, and copper foil direct-to-ground capacitance Ci is filled
Electricity.P1 disconnects P2 and is closed after a cycle, and copper foil direct-to-ground capacitance Ci charges to detection capacitance Cs by amplifier, another
P1 is repeated after cycle and is closed P2 disconnections.
When charge charges to copper foil direct-to-ground capacitance Ci, by a trsanscondutance amplifier, it can generate from Vcc to detection capacitance Cs
Electric charge transfer, the average current of this electric charge transfer is Ia, and Ia charges to copper foil detection capacitance Cs, thus detects capacitance
Cs can generate voltage and rise, when voltage rises to setting value Vp, will trigger comparator A1, and export high electricity
Flat/or low level.
Referring to Fig. 2, during aneroid, charging process such as right side graph, number of recharge cycles is more, when having liquid, since dielectric is normal
Number becomes larger, and copper foil direct-to-ground capacitance Ci capacitances is caused to become larger, to detecting the charging process such as leftmost curve of capacitance Cs, charging cycle time
Number is less, by detecting number of recharge cycles, compares the number of recharge cycles during aneroid preserved during initialization, it can be determined that go out
Whether this level sensing point has liquid.Counter counts charging times, can calculate the charging time that Vcs reaches Vp needs
Number.The multiple and different direct-to-ground capacitance formed using multiple induction electrodes have different initialization number of recharge cycles.
The level sensing scheme of two-part can be by exporting two digital signal positions, and pin1 high level represents that pin1 institutes are right
The fixed-point liquid level to be measured for the induction electrode answered has liquid, and low level represents the fixed point liquid to be measured of the induction electrode corresponding to pin1
Position aneroid.Pin2 is also same.
Multisection type level sensing can be by exporting two digital signal positions, 3 segmentations output 3pin, and 5 segmentations export 5pin,
N segmentations export npin signals.
The net taste machine of the present invention, cabinet inside are equipped with master control borad, display screen, power supply system, water purification injected system, spray
Mist system, vegetation water extraction system, water tank and the plant liquid container that can independently replace, the plant liquid container have for injecting
The galenical deodorizer of air purification function injects water purification from external water source to the water tank by the water purification injected system,
And the galenical deodorizer is extracted from the plant liquid container by the vegetation water extraction system and injects the water tank shaped
Into mixed liquor, the mixed liquor is atomized by the spraying system and discharge of spraying.The water tank is provided with the liquid level inspection
Device is surveyed, the induction electrode is arranged on the state that non-contact inductive high water tank is used on the outer wall of the water tank, can adopt
It is accordingly arranged on the different height position of the tank outer wall to detect multistage liquid level with multiple induction electrodes, it is described
Controller is controlled by the master control borad and exports fluid level condition signal by the display screen.
Basic structure and principle and the Application No. 201710926747.3 of the net taste machine of the present invention, the applying date are 2017
October 8, the Chinese patent application file of the entitled net taste machine with built-in plant liquid container are consistent, and distinguish it
It is in substituting original high water tank detection device by the liquid level detection device of the present invention, other something in common are herein
No longer repeat one by one.
Several technical terms used in the present invention are intended merely to facilitate description, are not construed as limiting the invention,
The present invention is not limited to above-described preferable embodiment, the public affairs that can be known based on those skilled in the art
Know technology or use and be capable of the various modifications of equivalence replacement and the embodiment of change in the prior art, it is every to be based on this hair
Bright spirit or technical concept, should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of liquid level detection device, it is characterized in that：Including induction electrode, capacitor charge and discharge circuit, capacitive detection circuit and control
Device processed, the induction electrode form direct-to-ground capacitance and for the state of non-contact inductive fixed-point liquid level to be measured, electricity with the earth
Hold detection circuit be equipped with detection capacitance, the controller by capacitor charge and discharge circuit with fixed frequency periodically to it is described over the ground
Capacitance carries out charge and discharge, charges when the direct-to-ground capacitance discharges to the detection capacitance, when the voltage of the detection capacitance
When rising to setting value, the controller judges there is aneroid at the fixed-point liquid level to be measured by calculating number of recharge cycles
State.
2. liquid level detection device according to claim 1, it is characterized in that：The induction electrode is stainless steel, copper foil or iron
Piece.
3. liquid level detection device according to claim 1, it is characterized in that：The induction electrode is equipped with multiple and is directed to different
Fixed-point liquid level to be measured.
4. liquid level detection device according to claim 1, it is characterized in that：The capacitor charge and discharge circuit is equipped with charge switch
And discharge switch, when the charge switch is closed and the discharge switch disconnects, charges to the direct-to-ground capacitance, work as institute
When stating charge switch disconnection and discharge switch closure, charged by the direct-to-ground capacitance to the detection capacitance.
5. liquid level detection device according to claim 1, it is characterized in that：The direct-to-ground capacitance is through trsanscondutance amplifier to described
Detection capacitance charges.
6. liquid level detection device according to claim 1, it is characterized in that：The controller is calculated to charge by counter and followed
Ring number simultaneously carries out threshold value comparison to judge whetheing there is liquid status at the fixed-point liquid level to be measured by comparing device.
7. net taste machine, the cabinet inside of net taste machine is equipped with plant liquid container, atomizer and water tank, and the plant liquid container is used to note
Enter the galenical deodorizer with air purification function, the galenical deodorizer injection institute is extracted from the plant liquid container
It states water tank and forms mixed liquor, the mixed liquor is discharged by the atomizer spray, it is characterized in that：The water tank is set just like power
Profit requires the liquid level detection device any one of 1 to 6, and the induction electrode is arranged on the outer wall of the water tank for non-
Contact senses the state of high water tank.
8. net taste machine according to claim 7, it is characterized in that：The cabinet inside is equipped with master control borad, display screen and power supply
Feed system, the controller are controlled by the master control borad and export fluid level condition signal by the display screen.
9. it is according to claim 7, it is characterized in that：Multiple induction electrodes are accordingly arranged on the tank outer wall not
With on level locations for detecting multistage liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485624.7A CN108072422A (en) | 2017-12-30 | 2017-12-30 | A kind of net taste machine of liquid level detection device and the application device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485624.7A CN108072422A (en) | 2017-12-30 | 2017-12-30 | A kind of net taste machine of liquid level detection device and the application device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108072422A true CN108072422A (en) | 2018-05-25 |
Family
ID=62156104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711485624.7A Pending CN108072422A (en) | 2017-12-30 | 2017-12-30 | A kind of net taste machine of liquid level detection device and the application device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108072422A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645481A (en) * | 2018-06-22 | 2018-10-12 | 华帝股份有限公司 | A kind of non-contact capacitance liquid-level detecting method |
| CN112857519A (en) * | 2019-11-12 | 2021-05-28 | 骊住(中国)投资有限公司 | Liquid level detection device, sanitary equipment and water dispenser |
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| US20100268490A1 (en) * | 2009-04-21 | 2010-10-21 | Young Green Energy Co. | Liquid measurement system and method thereof |
| US20110113878A1 (en) * | 2008-07-22 | 2011-05-19 | Panasonic Corporation | Liquid-level sensor |
| CN105597132A (en) * | 2016-01-12 | 2016-05-25 | 杭州传奇环境科技有限公司 | In-machine-mixing plant liquid deodorizing machine |
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| CN206019785U (en) * | 2016-08-29 | 2017-03-15 | 佛山市顺德区美的电热电器制造有限公司 | Liquid level detection circuit and wall-breaking machine |
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| CN207908007U (en) * | 2017-12-30 | 2018-09-25 | 杭州元睿电子有限公司 | A kind of liquid level detection device and the ordor removing machine using the device |
-
2017
- 2017-12-30 CN CN201711485624.7A patent/CN108072422A/en active Pending
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|---|---|---|---|---|
| US20110113878A1 (en) * | 2008-07-22 | 2011-05-19 | Panasonic Corporation | Liquid-level sensor |
| US20100268490A1 (en) * | 2009-04-21 | 2010-10-21 | Young Green Energy Co. | Liquid measurement system and method thereof |
| CN105597132A (en) * | 2016-01-12 | 2016-05-25 | 杭州传奇环境科技有限公司 | In-machine-mixing plant liquid deodorizing machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645481A (en) * | 2018-06-22 | 2018-10-12 | 华帝股份有限公司 | A kind of non-contact capacitance liquid-level detecting method |
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| CN112857519A (en) * | 2019-11-12 | 2021-05-28 | 骊住(中国)投资有限公司 | Liquid level detection device, sanitary equipment and water dispenser |
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