CN204422154U - A kind of leak water detdction module - Google Patents
A kind of leak water detdction module Download PDFInfo
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- CN204422154U CN204422154U CN201520048744.0U CN201520048744U CN204422154U CN 204422154 U CN204422154 U CN 204422154U CN 201520048744 U CN201520048744 U CN 201520048744U CN 204422154 U CN204422154 U CN 204422154U
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- detecting electrode
- comparer
- leak water
- testing circuit
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Abstract
The utility model proposes a kind of leak water detdction module, comprise detecting electrode and testing circuit, described detecting electrode comprises the first detecting electrode and the second detecting electrode, described testing circuit comprises comparer and reference circuit, described first detecting electrode is connected with direct supply by the second resistance, a described second detecting electrode wherein road is connected with the normal phase input end of described comparer, the 3rd resistance of leading up in addition connects earth terminal, described reference circuit comprises the first resistance and the 6th resistance that are in series, described first resistance connects direct supply, 6th resistance connects earth terminal, the inverting input of described comparer is connected between described first resistance and the 6th resistance, described testing circuit is encapsulated in hot melt adhesive, described detecting electrode stretches out outside described hot melt adhesive.This leak water detdction module, adopts simple electronic component to build, may be used for detection and leak, and adopts hot melt adhesive by testing circuit partial encapsulation, improves the waterproof of leak water detdction module, humidity resistance.
Description
Technical field
The utility model belongs to leak water detdction technical field, particularly relates to a kind of leak water detdction module.
Background technology
Household is leaked and has been brought a lot of trouble and worry.As water pipe, radiators from water leakage, water tap leakage in kitchen guarding, there is leakage hidden trouble equally in the household electrical appliance such as water heater, little kitchen treasured, air-conditioning, washing machine, if people find not in time, when leaking, event occurs, and user cannot learn and close water valve the very first time, causes and floods bubble floor, furniture etc., also cause damage even to neighbours, cause inestimable serious consequence.At present, on the market for the detection module of family's preventing water leakage and detecting sensor very few.Most preventing water leakage checkout equipment is all apply in the industry, as machine room, warehouse, cable duct etc., the electrode wired of detecting element, conductor type and photo-electric, the electrode of this kind of form has the shortcoming that volume is large, install inconvenience, and, need induction cable to be embedded in underground, be not suitable for family and use.In addition, existing leak water detdction device sensitivity is poor, when there being a large amount of ponding to exist, just can detecting and reporting to the police.In addition, the waterproof of existing leak water detdction modular circuit part, humidity resistance is poor, and serviceable life is short.
Utility model content
In order to solve current industrial leakage inspector because volume is large, install the technical matters that inconvenience etc. is unsuitable for family's use, propose a kind of leak water detdction module, volume is little, easy for installation, uses same being suitable for family.
A kind of leak water detdction module, comprise detecting electrode and testing circuit, described detecting electrode comprises the first detecting electrode and the second detecting electrode, described testing circuit comprises comparer and reference circuit, described first detecting electrode is connected with direct supply by the second resistance, a described second detecting electrode wherein road is connected with the normal phase input end of described comparer, the 3rd resistance of leading up in addition connects earth terminal, described reference circuit comprises the first resistance and the 6th resistance that are in series, described first resistance connects direct supply, 6th resistance connects earth terminal, the inverting input of described comparer is connected between described first resistance and the 6th resistance, described testing circuit is encapsulated in hot melt adhesive, described detecting electrode stretches out outside described hot melt adhesive.
Further, the 3rd described resistance is adjustable resistance.
Further again, be also connected with the 4th resistance between the output terminal of described comparer and direct supply.
Leak water detdction module of the present utility model, adopts simple electronic component to build, may be used for detection and leak, and adopt hot melt adhesive by testing circuit partial encapsulation, improve the waterproof of leak water detdction module, humidity resistance, be conducive to improving its serviceable life, be applicable to family and use.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and is not thought restriction of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of embodiment circuit theory diagrams of the leak water detdction module that the utility model proposes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of leak water detdction module, comprise detecting electrode and testing circuit, as shown in Figure 1, described detecting electrode comprises the first detecting electrode A and the second detecting electrode B, described testing circuit comprises comparer IC1A and reference circuit, described first detecting electrode A is connected with direct supply VCC by the second resistance R2, a described second detecting electrode B wherein road is connected with the normal phase input end of described comparer IC1A, the 3rd resistance R3 of leading up in addition connects earth terminal, described reference circuit comprises the first resistance R1 and the 6th resistance R6 that are in series, described first resistance R1 connects direct supply VCC, 6th resistance R6 connects earth terminal, the inverting input of described comparer IC1A is connected between described first resistance R1 and the 6th resistance R6, described testing circuit is encapsulated in hot melt adhesive, described detecting electrode stretches out outside described hot melt adhesive.
The leak water detdction principle of the leak water detdction module of the present embodiment is: the first resistance R1 in reference circuit and the 6th resistance R6 is by the mode of electric resistance partial pressure, and at the voltage signal that the inverting input input of IC1A is fixing, this voltage signal is V
markfirst detecting electrode A and the second detecting electrode B is for testing the electrode leaked, resistance value in water adopts RT as shown in Figure 1 equivalently represented, when not having water to touch the first detecting electrode A and the second detecting electrode B, RT is infinitely great, therefore the normal phase input end being equivalent to comparer IC1A is connected with ground end by the 3rd resistance R3, also the voltage being namely input to the normal phase input end of comparer IC1A is 0V, according to the principle of work of comparer, the now V+ < V-of comparer IC1A, comparer output low level, represents and water do not detected.When there being water to touch the first detecting electrode A and the second detecting electrode B, RT has the change of equivalent resistance, is equivalent to, two detecting electrode conductings in water, and now direct supply VCC is by R2, RT and R3 UNICOM, according to Ohm law, and meeting formation voltage V on R3
water, now the normal phase input end of comparer IC1A has voltage to input, and works as V
water> V
marktime, comparer can export high level, and expression detects leaks.By being partially encapsulated in hot melt adhesive by testing circuit, enhance the testing circuit part waterproof of leak water detdction module, moistureproof performance, can reach long immersion, effective protection circuit part, increases the service life.
As a preferred embodiment, the 3rd resistance R3 of the present embodiment is adjustable resistance.Because water quality is different, electric conductivity is also different, according to unified sensitivity, for the water quality of poor electric conductivity, may occur detection leakage phenomenon.The voltage of the normal phase input end input of comparer IC1A is actual is the dividing potential drop of the 3rd resistance R3, be adjustable resistance by arranging the 3rd resistance R3 in the present embodiment, by adjusting the resistance of R3, the high corresponding dividing potential drop of resistance of the 3rd resistance R3 is large, high to water quality perceptual sensitivity, otherwise, then low to water quality perceptual sensitivity, so just can be suitable for different water quality measurements, when not having water, module can output low level.
The output terminal of IC1A adopts the design of standard interface pin, and be conveniently connected with household electrical appliance, can be used as water heater, little kitchen is precious, and the leakage sensor of the household electrical appliance such as air-conditioning uses.
The 4th resistance R4 is also connected with, when comparer IC1A no signal exports, for the output terminal level of comparer IC1A is pulled to high level between the output terminal of described comparer IC1A and direct supply VCC.
Leak water detdction module of the present utility model, adopts simple electronic component to build, may be used for detection and leak, and adopt hot melt adhesive by testing circuit partial encapsulation, improve the waterproof of leak water detdction module, humidity resistance, be conducive to improving its serviceable life, be applicable to family and use.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a leak water detdction module, comprise detecting electrode and testing circuit, it is characterized in that: described detecting electrode comprises the first detecting electrode and the second detecting electrode, described testing circuit comprises comparer and reference circuit, described first detecting electrode is connected with direct supply by the second resistance, a described second detecting electrode wherein road is connected with the normal phase input end of described comparer, the 3rd resistance of leading up in addition connects earth terminal, described reference circuit comprises the first resistance and the 6th resistance that are in series, described first resistance connects direct supply, 6th resistance connects earth terminal, the inverting input of described comparer is connected between described first resistance and the 6th resistance, described testing circuit is encapsulated in hot melt adhesive, described detecting electrode stretches out outside described hot melt adhesive.
2. leak water detdction module according to claim 1, is characterized in that: the 3rd described resistance is adjustable resistance.
3. leak water detdction module according to claim 2, is characterized in that: be also connected with the 4th resistance between the output terminal of described comparer and direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048744.0U CN204422154U (en) | 2015-01-26 | 2015-01-26 | A kind of leak water detdction module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048744.0U CN204422154U (en) | 2015-01-26 | 2015-01-26 | A kind of leak water detdction module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204422154U true CN204422154U (en) | 2015-06-24 |
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| CN201520048744.0U Expired - Fee Related CN204422154U (en) | 2015-01-26 | 2015-01-26 | A kind of leak water detdction module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092180A (en) * | 2015-07-20 | 2015-11-25 | 北京云网天成科技有限公司 | Seepage detection sensor |
| CN106123208A (en) * | 2016-06-21 | 2016-11-16 | 珠海格力电器股份有限公司 | Dehumidifier water leakage detection device and method and dehumidifier |
| CN108452680A (en) * | 2018-04-20 | 2018-08-28 | 苏州科技大学 | A kind of ultra-filtration water purifier control device with water leakage alarm |
| CN110068427A (en) * | 2019-05-14 | 2019-07-30 | 深圳市安瑞华科技有限公司 | A kind of leak water detdction circuit and leakage inspector |
| CN110940464A (en) * | 2018-09-25 | 2020-03-31 | 宁波方太厨具有限公司 | Water leakage detection method and water leakage detection device |
| CN110997491A (en) * | 2017-03-30 | 2020-04-10 | 杰必机电配件西班牙公司 | Water sensor for detecting water in gas oil filter |
-
2015
- 2015-01-26 CN CN201520048744.0U patent/CN204422154U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092180A (en) * | 2015-07-20 | 2015-11-25 | 北京云网天成科技有限公司 | Seepage detection sensor |
| CN105092180B (en) * | 2015-07-20 | 2017-10-13 | 北京云网天成科技有限公司 | A kind of leak detection sensor |
| CN106123208A (en) * | 2016-06-21 | 2016-11-16 | 珠海格力电器股份有限公司 | Dehumidifier water leakage detection device and method and dehumidifier |
| CN110997491A (en) * | 2017-03-30 | 2020-04-10 | 杰必机电配件西班牙公司 | Water sensor for detecting water in gas oil filter |
| CN110997491B (en) * | 2017-03-30 | 2023-05-12 | 杰必机电配件西班牙公司 | Water sensor for detecting water in gas oil filter |
| CN108452680A (en) * | 2018-04-20 | 2018-08-28 | 苏州科技大学 | A kind of ultra-filtration water purifier control device with water leakage alarm |
| CN110940464A (en) * | 2018-09-25 | 2020-03-31 | 宁波方太厨具有限公司 | Water leakage detection method and water leakage detection device |
| CN110068427A (en) * | 2019-05-14 | 2019-07-30 | 深圳市安瑞华科技有限公司 | A kind of leak water detdction circuit and leakage inspector |
| CN110068427B (en) * | 2019-05-14 | 2024-04-05 | 重庆安瑞华仪器有限公司 | Water leakage detection circuit and water leakage detection device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160126 |
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| EXPY | Termination of patent right or utility model |