CN103438258A - Water tap with automatic water-cut-off function at time delay - Google Patents
Water tap with automatic water-cut-off function at time delay Download PDFInfo
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- CN103438258A CN103438258A CN2013104004219A CN201310400421A CN103438258A CN 103438258 A CN103438258 A CN 103438258A CN 2013104004219 A CN2013104004219 A CN 2013104004219A CN 201310400421 A CN201310400421 A CN 201310400421A CN 103438258 A CN103438258 A CN 103438258A
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Abstract
The invention provides a water tap with automatic water-cut-off function at time delay, which is characterized by comprising a 12V direct current power supply, a time delay circuit, an electromagnetic hydrovalve drive circuit and an operating state indicating circuit, wherein the electromagnetic hydrovalve drive circuit is composed of an enhanced N channel field-effect transistor VT1 and an electromagnetic hydrovalve DCF; and the model of the enhanced N channel field-effect transistor VT1 is IRF540. The water tap provided by the invention overcomes the defect that infrared induction can be easily influenced by perpendicular incidence of background light and sunlight, possibly causing water flow and the like in a non-operating state. The invention implements simple circuit structure, is free from the interference of various photomagnetic signals, and thus, has reliable operating performance; and the water tap is completely made of common electric components, so the cost is low. The water tap can be popularized and used in hotels, office buildings, hospitals, passenger depots, airports, laboratories and other occasions.
Description
Technical field
The invention belongs to Electric automatic control and water-saving technology field, is the water tap that has time delay automatic shutoff function about a kind of.
Background technique
Due to advancing by leaps and bounds of electronic technology, the infrared rays automatic faucet has been done a large amount of improvement technically.The power supply of water tap to the direct current supply future development, uses by alkaline battery lithium cell till now by the 220V Ac instead, eliminated the doubt that people use the 220V Ac; In water tap, the electromagnetic water valve structure has also been carried out a lot of improvement, realized simple in structure, compact, withstand voltage, easy for assembly, disassembly and maintenance, the target such as water tap is beaten to open or close and finished rapidly, and power consumption is little.
At present, main flow infrared ray control tap mainly contains two kinds:
1. shading type infrared rays auto-switch tap, when the people stretches out one's hand washing, block infrared beam, and water tap is automatically opened and discharged water; When washing Bi Renti and leaving, time delay discharges water and automatically closes and cut off the water afterwards in 15 seconds.
2. infrared ray control tap, the circuit of infrared ray control tap is divided into sends out, receives two-part, and be placed in the both sides of water tap, when staff approaches water tap, the infrared rays that infrared transmitting tube sends reflexes to infrared receiving tube through staff, receiving tube is automatically converted to electrical signal after receiving the optical signal of reflection, through subsequent conditioning circuit, further amplifies, and finally by drive circuit, controls the electromagnetic water valve tap of fetching boiling water; When staff, during away from water tap, receiving tube does not receive the optical signal of reflection, and drive circuit disconnects the electromagnetic water valve power supply, and water tap is closed automatically.
Water tap with time delay automatic shutoff function of the present invention has overcome above-mentioned many defects, has realized that circuit structure succinctly, is not subject to various opto-magnetic signal interference, reliable working performance, all uses that the ordinary electronic components and parts are made, the requirement such as cheap.The occasions such as this water tap can be in hotel, office building, hospital, passenger station, airport, laboratory are promoted the use of.
Below describe the water tap with time delay automatic shutoff function of the present invention related correlation technique content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: the water tap with time delay automatic shutoff function of the present invention has overcome infrared induction and has been subject to bias light and direct sunlight impact, sometimes cause many defects such as non-working condition down-flow water, realized that circuit structure succinctly, is not subject to various opto-magnetic signal interference, reliable working performance, all uses that the ordinary electronic components and parts are made, the requirement such as cheap.The occasions such as this water tap can be in hotel, office building, hospital, passenger station, airport, laboratory are promoted the use of.
Circuit working principle: after clicking key switch AN, the 12V DC electrical source is charged to electrochemical capacitor C1 rapidly by resistance R 2, fill to obtain voltage during higher than the conducting valve threshold voltage of the grid G of enhancement mode N channel field-effect pipe VT1 on electrochemical capacitor C1, enhancement mode N channel field-effect pipe VT1 starts conducting, now the source S of 12V DC electrical source by field effect transistor and drain D, to the coil power supply of electromagnetic water valve DCF, are opened water tap and are discharged water.
Water tap is opened when discharging water, because the voltage on electrochemical capacitor C1 is still higher than the conducting valve threshold voltage of enhancement mode N channel field-effect pipe VT1, enhancement mode N channel field-effect pipe VT1 will continue to keep on state, along with electrochemical capacitor C1 discharges to discharge resistance R1, voltage on electrochemical capacitor C1 is during lower than enhancement mode N channel field-effect pipe VT1 conducting valve threshold voltage, enhancement mode N channel field-effect pipe VT1 cut-off, the coil losing electricity water tap of electromagnetic water valve DCF stops flowing water.If, before enhancement mode N channel field-effect pipe VT1 cut-off, again click key switch AN, can make a turn-on cycle of enhancement mode N channel field-effect pipe VT1 continuity, water tap continues flowing water.The length in circuit turn-on cycle is determined by 2 factors: the one, and the size of electrochemical capacitor C1 discharge loop discharge resistance R1 resistance; The 2nd, the capacity of electrochemical capacitor C1.
Technical characteristics: have the water tap of time delay automatic shutoff function, it comprises 12V DC electrical source, delay circuit, and electromagnetic water valve drive circuit and working state indicating circuit is characterized in that:
Delay circuit: it is comprised of key switch AN, resistance R 2, electrochemical capacitor C1 and discharge resistance R1, the anodal VCC of the termination circuit of key switch AN, the other end of key switch AN connects the positive pole of electrochemical capacitor C1 and the end of discharge resistance R1 by resistance R 2, the other end connection circuit ground GND of the negative pole of electrochemical capacitor C1 and discharge resistance R1;
The electromagnetic water valve drive circuit: it is comprised of enhancement mode N channel field-effect pipe VT1 and electromagnetic water valve DCF, the grid G of enhancement mode N channel field-effect pipe VT1 connects the positive pole of electrochemical capacitor C1, the source S connection circuit ground GND of enhancement mode N channel field-effect pipe VT1, the anodal VCC of one termination circuit of electromagnetic water valve DCF coil, the drain D of another termination enhancement mode N channel field-effect pipe VT1 of electromagnetic water valve DCF coil;
The anodal VCC of the anodal connection circuit of 12V DC electrical source, the negative pole connection circuit ground GND of 12V DC electrical source.
Working state indicating circuit: the anodal VCC of a termination circuit of resistance R 3, the positive pole of the other end sending and receiving optical diode LED of resistance R 3, the negative pole connection circuit ground GND of LED.
The accompanying drawing explanation
Accompanying drawing is first embodiment's circuit working schematic diagram of the fire hose with time delay automatic shutoff function provided by the invention.
Embodiment
According to water tap circuit working schematic diagram and the accompanying drawing explanation with time delay automatic shutoff function shown in the drawings, and according to annexation between components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in mode of execution requires and the circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The selection of components and parts and technical parameter thereof
The present invention is under 12V DC power supply condition, and the resistance of discharge resistance R1 is 6.2M Ω, and the resistance of resistance R 2 is 820 Ω, and the resistance of resistance R 3 is 1.2K Ω;
The capacity of electrochemical capacitor C1 is 22 μ F/25V;
Enhancement mode N channel field-effect pipe VT1 in the present invention can select the models such as IRF540, the IRF540 field effect transistor under on state, between its source S and drain D pressure drop minimum, basically can ignore;
DCF is electromagnetic water valve, and its model of selecting is: DF0618L, feedwater bore 15mm.
Circuit production main points and circuit debugging
According to water tap circuit working schematic diagram and the accompanying drawing explanation with time delay automatic shutoff function shown in the drawings, and according to annexation between components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in mode of execution requires and the circuit production main points are implemented to realize the present invention;
The VDC of electromagnetic water valve DCF coil is l2V, the about 2W of power, and maximum operating currenbt is 150mA; Electromagnetic water valve DCF also can adopt water power magnetic water valve on washing machine to replace;
The component parameter of recommending according to embodiment is made, the ON time of enhancement mode N channel field-effect pipe VT1≤20 seconds; Extend or shorten the ON time of enhancement mode N channel field-effect pipe VT1 if need, can suitably increase or reduce the Capacity of electrochemical capacitor C1 or the resistance of discharge resistance R1;
Environmental Conditions temperature of the present invention is 1 ℃～55 ℃; Environmental Conditions humidity is 95%RH; Applicable tap water hydraulic is 0.05～0.6Mpa.
Claims (2)
1. the water tap with time delay automatic shutoff function, it comprises 12V DC electrical source, delay circuit, electromagnetic water valve drive circuit and working state indicating circuit is characterized in that:
Described delay circuit is comprised of key switch AN, resistance R 2, electrochemical capacitor C1 and discharge resistance R1, the anodal VCC of the termination circuit of key switch AN, the other end of key switch AN connects the positive pole of electrochemical capacitor C1 and the end of discharge resistance R1 by resistance R 2, the other end connection circuit ground GND of the negative pole of electrochemical capacitor C1 and discharge resistance R1;
Described electromagnetic water valve drive circuit is comprised of enhancement mode N channel field-effect pipe VT1 and electromagnetic water valve DCF, the model that enhancement mode N channel field-effect pipe VT1 selects is IRF540, the grid G of enhancement mode N channel field-effect pipe VT1 connects the positive pole of electrochemical capacitor C1, the source S connection circuit ground GND of enhancement mode N channel field-effect pipe VT1, the anodal VCC of one termination circuit of electromagnetic water valve DCF coil, the drain D of another termination enhancement mode N channel field-effect pipe VT1 of electromagnetic water valve DCF coil;
The anodal VCC of the anodal connection circuit of described 12V DC electrical source, the negative pole connection circuit ground GND of 12V DC electrical source.
2. the described water tap with time delay automatic shutoff function according to claim 1, it is characterized in that: the anodal VCC of a termination circuit of resistance R 3 in working state indicating circuit, the positive pole of the other end sending and receiving optical diode LED of resistance R 3, the negative pole connection circuit ground GND of LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104004219A CN103438258A (en) | 2013-09-05 | 2013-09-05 | Water tap with automatic water-cut-off function at time delay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104004219A CN103438258A (en) | 2013-09-05 | 2013-09-05 | Water tap with automatic water-cut-off function at time delay |
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| CN103438258A true CN103438258A (en) | 2013-12-11 |
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| CN2013104004219A Pending CN103438258A (en) | 2013-09-05 | 2013-09-05 | Water tap with automatic water-cut-off function at time delay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960067A (en) * | 2016-07-07 | 2016-09-21 | 吴圣铎 | Time-delay LED lighting lamp for security door keyhole |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200031U (en) * | 1986-01-02 | 1986-08-20 | 李逢叠 | Automatic water-cutting out unit |
| JPS648357A (en) * | 1987-06-30 | 1989-01-12 | Tdk Corp | Discharge load driving circuit |
| CN2738060Y (en) * | 2004-11-12 | 2005-11-02 | 高跃钧 | Water-saving time delay stop valve |
| CN101075411A (en) * | 2006-05-19 | 2007-11-21 | 群康科技(深圳)有限公司 | Impulse driving circuit |
| CN201628685U (en) * | 2009-12-02 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | ICP auto-ignition device |
| CN202551481U (en) * | 2012-03-28 | 2012-11-21 | 上海阿卡得电子有限公司 | Sectional dimming control circuit for electronic ballast of fluorescent lamp |
| CN203421250U (en) * | 2013-09-05 | 2014-02-05 | 吴建堂 | Faucet with delay and automatic water supply cut-off functions |
-
2013
- 2013-09-05 CN CN2013104004219A patent/CN103438258A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86200031U (en) * | 1986-01-02 | 1986-08-20 | 李逢叠 | Automatic water-cutting out unit |
| JPS648357A (en) * | 1987-06-30 | 1989-01-12 | Tdk Corp | Discharge load driving circuit |
| CN2738060Y (en) * | 2004-11-12 | 2005-11-02 | 高跃钧 | Water-saving time delay stop valve |
| CN101075411A (en) * | 2006-05-19 | 2007-11-21 | 群康科技(深圳)有限公司 | Impulse driving circuit |
| CN201628685U (en) * | 2009-12-02 | 2010-11-10 | 江苏天瑞仪器股份有限公司 | ICP auto-ignition device |
| CN202551481U (en) * | 2012-03-28 | 2012-11-21 | 上海阿卡得电子有限公司 | Sectional dimming control circuit for electronic ballast of fluorescent lamp |
| CN203421250U (en) * | 2013-09-05 | 2014-02-05 | 吴建堂 | Faucet with delay and automatic water supply cut-off functions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960067A (en) * | 2016-07-07 | 2016-09-21 | 吴圣铎 | Time-delay LED lighting lamp for security door keyhole |
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Application publication date: 20131211 |