CN208420116U - A kind of water level sensor and solar water heater - Google Patents
A kind of water level sensor and solar water heater Download PDFInfo
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- CN208420116U CN208420116U CN201820969809.9U CN201820969809U CN208420116U CN 208420116 U CN208420116 U CN 208420116U CN 201820969809 U CN201820969809 U CN 201820969809U CN 208420116 U CN208420116 U CN 208420116U
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- water level
- measuring electrode
- detection module
- electrode
- level sensor
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Abstract
The utility model discloses a kind of water level sensors, including at least one measuring electrode, the measuring electrode is sealed in insulation crust, the measuring electrode is connect by conducting wire with detection module, coupled capacitor is generated when water level is not less than the measuring electrode, between water and the measuring electrode and the detection module is fed back to by conducting wire.The water level sensor of the utility model, by the way that measuring electrode is sealed in insulation crust, when being not less than the measuring electrode using water level, the principle of coupled capacitor is generated between water and measuring electrode, if being able to detect that the coupled capacitor, illustrate that height of water level illustrates that water level is not up to the measuring electrode if can't detect the coupled capacitor not less than measuring electrode.
Description
Technical field
The utility model relates to a kind of water level detecting devices, specifically, being to be related to a kind of water level sensor and solar energy
Water heater.
Background technique
The method of existing test water level, capacitor or resistance between usually direct measuring electrode, by electrode it
Between capacitor or resistance variation test water level.In the structure of sensor, needs to extract at electrode and directly contacted with water, therefore
It needs to be sealed between electrode and insulating body, but working sensor is in the liner of high temperature and humidity, it is easy to seal failure, if this
Body water inlet, causes the variation of interelectrode resistance or capacitor to cannot achieve level measuring；In addition scale, high-temperature steam are between electrode
The influence of capacitor or resistance is also very big, can not accurately test water level.
Summary of the invention
The utility model is directly contacted with water to solve existing water level sensor electrode piece, electrode slice and insulating body it
Between seal be easy failure lead to not measure water level, and over time electrode slice surface scale cause measurement accuracy reduce skill
Art problem proposes a kind of water level sensor, can solve the above problem.
In order to solve the above-mentioned technical problem, the utility model is achieved using following technical scheme:
A kind of water level sensor, including at least one measuring electrode, the measuring electrode is sealed in insulation crust, described
Measuring electrode connect by conducting wire with detection module, when water level is not less than the measuring electrode, water and the measuring electrode it
Between generate and coupled capacitor and the detection module fed back to by conducting wire.
Further, the measuring electrode has multiple, and multiple measuring electrode is connect with the detection module respectively, and
It is laid in the insulation crust along short transverse, there is spacing between adjacent two measuring electrode.
It further, further include reference electrode, the reference electrode is connect by conducting wire with detection module.
Further, the reference electrode is sealed in the insulation crust.
Further, the detection module is located inside the insulation crust, and appearance communication is offered on the insulation crust
The cable-through hole that line passes through, the detection module are connect by communication line with control panel.
Further, the measuring electrode is fitted tightly over the inner wall surface of the insulation crust.
Further, temperature sensor, the temperature sensor and the detection mould are additionally provided in the insulation crust
Block connection.
Further, the detection module is single-chip microcontroller.
The utility model proposes a kind of solar water heater, including liner simultaneously, further includes water level noted before
Sensor, the insulative housing portion or whole stretch in the liner.
Further, when including reference electrode, the reference electrode is located at outside the liner.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the water level sensor of the utility model, leads to
It crosses and measuring electrode is sealed in insulation crust, when being not less than the measuring electrode using water level, produced between water and measuring electrode
The principle of raw coupled capacitor illustrates height of water level not less than measuring electrode, if can't detect if being able to detect that the coupled capacitor
The coupled capacitor illustrates that water level is not up to the measuring electrode.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model
It will become clearer.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of example structure schematic diagram for the water level sensor that the utility model is proposed；
Fig. 2 is that water level sensor is assemblied in the schematic diagram in inner water tank in Fig. 1；
Fig. 3 is the measuring principle figure of water level sensor in Fig. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one, the present embodiment propose a kind of water level sensor, as shown in Figure 1, including at least one measuring electrode
11, measuring electrode 11 is sealed in insulation crust 12, and measuring electrode 11 is connect by conducting wire 13 with detection module 14, when water level not
Coupled capacitor is generated when lower than measuring electrode 11, between water and measuring electrode 11 and detection module 14 is fed back to by conducting wire.This
When the water level sensor of embodiment is not less than measuring electrode using water level, the original of coupled capacitor is generated between water and measuring electrode
Reason illustrates that height of water level is not less than the position of measuring electrode if being able to detect that the coupled capacitor, if can't detect coupling electricity
Hold, illustrates that water level is not up to the position of the measuring electrode.When by water level sensor assembly in liner, the position of water level sensor
Set and set in liner acceptance of the bid, thus the position of each measuring electrode water level corresponding in liner be it is certain, when water level is lower than
When the height of the measuring electrode, detection module 14 is only able to detect that the parasitic capacitance between measuring electrode and ground, and water level rises
When by measuring electrode, using the conductive energy of the water in liner, water is generated with the measuring electrode being located on the inside of insulation crust
The size of coupling electrode, parasitic capacitance can be ignored compared with coupled capacitor, therefore capacitance transition can be detected, and pass through
Detection coupled capacitor can obtain water level information, by the way that measuring electrode to be sealed in insulation crust in the present embodiment, measurement electricity
Pole does not contact directly with water, and the influence of fouling, high temperature, steam to capacitor is extremely small, can greatly improve detection accuracy rate.It is interior
Without sealing in gallbladder, solve traditional sensors because of failure caused by poor sealing.Liner interior section has prevented water inlet completely
Point does not need to seal, it is only necessary to be sealed at lead-out wire outside the tank, this seal point is not allowed in liner lower air
Easily touch that water, temperature are low, and seal failure possibility is low.
Insulation crust 12 is preferably realized using high temperature resistant material, such as plastics, rubber, ceramics material.
Measuring electrode 11 is preferably fitted tightly over the inner wall surface of insulation crust 12, when water level is increased to measuring electrode 11
When, insulation crust 12 forms capacitor, can produce coupled capacitor between measuring electrode and water.
Detection module 14 can use chip microcontroller, for receiving the capacitance signal of measuring electrode feedback.
In order to improve water level detecting precision, measuring electrode 11 be preferably provided with it is multiple, multiple measuring electrode 11 respectively with
Detection module 14 connects, and is laid in insulation crust 12 along short transverse, has spacing between adjacent two measuring electrode 11.Such as
Shown in Fig. 1, Fig. 2, the water level sensor of the present embodiment is equipped with 110,111,112,113,114 totally 5 measuring electrodes, for examining
Survey water level.0 level electrode 110 is 0 water-level detecting point, the bottommost in liner 15, full water level electrode 114, in liner
151 same level position of 15 tops and overflow port.15 water level of liner is bisected into four points, measurement electricity by measuring electrode 111,112,113
Pole 110,111,112,113,114 is entirely encapsulated in integrally formed insulation crust 12, and detection module 14 is distinguished by conducting wire
It is connected with measuring electrode, the coupled capacitor signal that acquisition measuring electrode is fed back.
As shown in figure 3, the capacitor in measuring electrode 110,111,112,113,114 is all when anhydrous in liner 15
It is the parasitic capacitance that the measuring electrode generates over the ground.When the water level in liner 15 rises, water level successively reaches measurement electricity
Pole 110,111,112,113,114, when water level reaches some measuring electrode, the capacitance of corresponding measuring electrode becomes
Change, transition is measuring electrode to the capacitor formed between water and the shunt capacitance of original parasitic capacitance, and capacitance occurs transition, sentences
Break and reaches this measuring electrode for water level.
When water level reaches measuring electrode 111, the capacitance transition of measuring electrode 110,111 is identified as 25% water
Position, when water level reaches measuring electrode 112, the capacitance transition of measuring electrode 110,111,112 is identified as 50% water level, water
When position reaches measuring electrode 113, the capacitance transition of measuring electrode 110,111,112,113 is identified as 75% water level, water
When position reaches measuring electrode 114, it is full to be identified as 100% for the capacitance transition of measuring electrode 110,111,112,113,114
Water water level.
It further include reference electrode 10 to improve detection accuracy, reference electrode 10 is connect by conducting wire with detection module 14.
Reference electrode 10 is located at outside liner 15, water level number on reference electrode 10 there is no influencing, to detection module 14, institute is anti-
The capacitance of feedback is always the parasitic capacitance generated between ground, can provide and be detected when judging coupled capacitor for measuring electrode
Benchmark, and reference electrode 10 is located at the outside of liner 15, is not influenced by fog, solidifying pearl in water tank, it is relatively reliable.
It is preferred that reference electrode 10 is sealed in insulation crust 12.It can prolong the service life.
Detection module 14 is located inside insulation crust 12, offers on insulation crust 12 and holds the cable-through hole that 17 lines of communication pass through
(not shown), detection module 14 are connect by communication line 16 with control panel 18.
Temperature sensor 17 is additionally provided in insulation crust 12, temperature sensor 17 is connect with detection module 14.Temperature passes
Sensor 17 is used to detect the temperature in water tank, and feeds back to detection module, realizes water temperature detection function.Temperature sensor 17 can
, can also be multiple with setting one, for detecting the temperature of different location.Setting quantity is more, and detection accuracy is higher.
Embodiment two, the present embodiment propose a kind of solar water heater, further include reality as shown in Fig. 2, including liner 15
Water level sensor documented by example one is applied, as shown in Figure 1, the water level sensor includes at least one measuring electrode 11, measurement electricity
Pole 11 is sealed in insulation crust 12, and measuring electrode 11 is connect by conducting wire 13 with detection module 14, when water level is not less than measurement
Coupled capacitor is generated when electrode 11, between water and measuring electrode 11 and detection module 14 is fed back to by conducting wire.Insulation crust 12
It is some or all of to stretch in liner 15.
Other features of water level sensor can be found in recorded in embodiment one and Fig. 1-Fig. 3, and this will not be repeated here.
It should be noted that reference electrode 10 is used to provide comparison base when detection judges coupled capacitor for measuring electrode
Standard, when including reference electrode 10, reference electrode 10 is located at outside liner 15.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (10)
1. a kind of water level sensor, it is characterised in that: including at least one measuring electrode, it is outer that the measuring electrode is sealed in insulation
In shell, the measuring electrode is connect by conducting wire with detection module, when water level is not less than the measuring electrode, water and the survey
Coupled capacitor is generated between amount electrode and the detection module is fed back to by conducting wire.
2. water level sensor according to claim 1, it is characterised in that: the measuring electrode has multiple, multiple survey
Amount electrode is connect with the detection module respectively, and is laid in the insulation crust along short transverse, adjacent two measuring electrode
Between have spacing.
3. water level sensor according to claim 1, it is characterised in that: further include reference electrode, the reference electrode is logical
Conducting wire is crossed to connect with detection module.
4. water level sensor according to claim 3, it is characterised in that: the reference electrode is sealed in the insulation crust
It is interior.
5. water level sensor according to claim 1, it is characterised in that: the detection module is located in the insulation crust
Portion, offers on the insulation crust and holds the cable-through hole that communication line passes through, and the detection module is connected by communication line and control panel
It connects.
6. water level sensor according to claim 1-5, it is characterised in that: the measuring electrode is fitted tightly over
The inner wall surface of the insulation crust.
7. water level sensor according to claim 1-5, it is characterised in that: be additionally provided in the insulation crust
Temperature sensor, the temperature sensor are connect with the detection module.
8. water level sensor according to claim 1-5, it is characterised in that: the detection module is single-chip microcontroller.
9. a kind of solar water heater, including liner, it is characterised in that: further include the described in any item water levels of claim 1-8
Sensor, the insulative housing portion or whole stretch in the liner.
10. solar water heater according to claim 9, it is characterised in that: described with reference to electricity when including reference electrode
Pole is located at outside the liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969809.9U CN208420116U (en) | 2018-06-22 | 2018-06-22 | A kind of water level sensor and solar water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969809.9U CN208420116U (en) | 2018-06-22 | 2018-06-22 | A kind of water level sensor and solar water heater |
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| Publication Number | Publication Date |
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| CN208420116U true CN208420116U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820969809.9U Active CN208420116U (en) | 2018-06-22 | 2018-06-22 | A kind of water level sensor and solar water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945346A (en) * | 2021-03-31 | 2021-06-11 | 北京大蚯蚓数字科技有限公司 | Liquid level height measuring device and method |
-
2018
- 2018-06-22 CN CN201820969809.9U patent/CN208420116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945346A (en) * | 2021-03-31 | 2021-06-11 | 北京大蚯蚓数字科技有限公司 | Liquid level height measuring device and method |
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