CN204512593U - The control circuit of induction tap and apply its induction tap - Google Patents
The control circuit of induction tap and apply its induction tap Download PDFInfo
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- CN204512593U CN204512593U CN201520051230.0U CN201520051230U CN204512593U CN 204512593 U CN204512593 U CN 204512593U CN 201520051230 U CN201520051230 U CN 201520051230U CN 204512593 U CN204512593 U CN 204512593U
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Abstract
The utility model discloses a kind of control circuit of induction tap and apply its induction tap, it comprises electromagnetic valve switch unit, it is coupled to the input end of alternating voltage, voltage transformation unit, to the power supply as intergrated circuit defeated after alternating voltage step-down, voltage stabilizing; Voltage transformation unit comprises rectification circuit, be coupled to the input end of alternating voltage, VDC is exported after rectification is carried out to alternating voltage, reduction voltage circuit, be coupled to the output terminal of rectification circuit, Drazin inverse voltage after reduction regulation being carried out to VDC by off line on-off mode, mu balanced circuit, be coupled to the output terminal of reduction voltage circuit, exchange economize on electricity and compressing into power supply as intergrated circuit after row voltage stabilizing.The energy loss that the purpose of this utility model is to have evaded the coil-induced transformation of employing and causes and secondary current excessive and damage coil primary side components and parts.
Description
Technical field
The utility model relates to a kind of control circuit of the induction tap for numerous public place and applies its induction tap.
Background technique
Induction tap is by infrared reflection principle, when the hand of human body is placed in the infrared spectral range of water tap, the infrared rays that infrared emission tube sends reflexes to infrared receiver tube due to the gear of picking up of human body hand, send to impulse electromagnetic valve by the signal after the micro computer process in integrated circuit, after solenoid valve acknowledge(ment) signal by the instruction unpack spool of specifying to control water discharge of water faucet; When the hand of human body leaves infrared induction scope, solenoid valve does not have acknowledge(ment) signal, and valve core of the electromagnetic valve is then undertaken resetting by the spring of inside and controls the pass water of water tap.
Existing induction tap comprises Alternating Current Power Supply and direct current supply two kinds;
Wherein, DC power supply induction tap mainly adopts alkaline, lithium battery as power supply, supply integrated circuit and impulse electromagnetic valve work.Due to alkaline, lithium limited battery capacity, it need be shorter with the life-span, changes trouble, also can cause environmental pollution.
In addition, Alternating Current Power Supply type induction tap, also be only adopt Ac at it to impulse electromagnetic valve power pack, and in integrated circuit, still adopt traditional alkaline battery as power supply or pass through simply because the existence of alkaline battery still can cause environmental pollution, also be not easy to maintain and replace.
Be CN202065533U at notification number, the applying date is describe a kind of full-automatic water tap intelligent-induction control circuit in the patent documentation (hereinafter referred to as documents 1) of 2011.04.29, and it comprises infrared transmitter, IR signal reception and change-over circuit, electromagnetic water valve controller and electric control circuit etc.The multi-vibrator that infrared transmitter is made up of 555 time-base integrated circuit IC1 is formed, IR signal reception and change-over circuit are made up of infrared receiving tube VD2 and infrared receiver amplification circuit IC2, electromagnetic water valve control circuit is made up of phase inverter F1, F2, driving tube VT2 and relay K 1, and electric control circuit is made up of phase inverter F3, F4, driving tube VT2 and relay K 2.This full-automatic water tap intelligent-induction control circuit, can be widely used in the control of the public place water taps such as restaurant, public lavatory, hospital, passenger station, reach the object of health, water saving, economize on electricity.
As shown in Figure 1, for directly summarizing in full-automatic water tap intelligent-induction control circuit disclosed in documents 1 and the functional block diagram that goes out.220V AC-powered to while electromagnetic valve switch unit by primary and secondary coil step-down, then by can intergrated circuit be supplied power to after rectifying unit rectification.
Wherein, 220V Ac adopts primary and secondary coil carry out the step-down very high power loss of existence and can produce larger secondary current at out-secondary; Power loss is unfavorable for the utilization efficiency of product, and larger secondary electrical fails to be convened for lack of a quorum and causes damage to the rectifier cell in rectifying unit and voltage stabilizing element.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model be to provide evaded the coil-induced transformation of employing and the energy loss that causes and secondary current excessive and damage the control circuit of the induction tap of coil primary side components and parts and apply its induction tap.
For achieving the above object, the utility model provides following technological scheme:
A control circuit for induction tap, it comprises
Electromagnetic valve switch unit, it is coupled to the input end of alternating voltage,
Voltage transformation unit, to the power supply as intergrated circuit defeated after alternating voltage step-down, voltage stabilizing;
Described voltage transformation unit comprises
Rectification circuit, is coupled to the input end of alternating voltage, after carrying out rectification to alternating voltage, export VDC,
Reduction voltage circuit, is coupled to the output terminal of rectification circuit, Drazin inverse voltage after carrying out reduction regulation by off line on-off mode to VDC,
Mu balanced circuit, is coupled to the output terminal of reduction voltage circuit, exchanging economize on electricity and compressing into power supply as intergrated circuit after row voltage stabilizing.
Preferably,
Described rectification circuit comprises reference diode; Wherein, the anode of described reference diode is coupled to the first input end of alternating circuit, and its negative electrode is coupled to the input end of reduction voltage circuit.
Preferably,
Described reduction voltage circuit comprises off line switch mode power supplies regulator chip; Wherein, described off line switch mode power supplies regulator chip has the input end that four are all coupled to rectification circuit output end, and its output terminal is coupled to the input end of mu balanced circuit.
Preferably,
Described mu balanced circuit comprises integrated regulator, and the input end of described integrated regulator is coupled to the output terminal of described reduction voltage circuit, and its output terminal passes through capacity earth.
A kind of induction tap: it has the voltage transformation unit in claim 1 to 8 described in any one.
The utility model has made improvement to the coil-induced step-down carried out usually adopted in prior art on the basis of existing technology; Carrying out rectification by the rectification circuit in the utility model voltage transformation unit, then regulated and controled by PWM and realize step-down in conjunction with metal-oxide-semiconductor i.e. off line on-off mode, is then finally realize voltage stabilizing by mu balanced circuit, to obtain the power supply of desirable intergrated circuit.
Accompanying drawing explanation
Fig. 1 directly summarizes the functional block diagram of going out in full-automatic water tap intelligent-induction control circuit;
Fig. 2 is the functional-block diagram of the control circuit embodiment of the utility model induction tap;
Fig. 3 is the physical circuit figure of the control circuit embodiment of the utility model induction tap;
Fig. 4 is the structural drawing of the utility model induction tap.
Accompanying drawing marks: 1, electromagnetic valve switch unit; 2, voltage transformation unit; 21, rectification circuit; 22, reduction voltage circuit; 23, mu balanced circuit; 3, intergrated circuit; 4, induction tap.
Embodiment
With reference to Fig. 2 to Fig. 4, the utility model is described further.
As shown in Figure 2, mainly comprise in the control circuit of a kind of induction tap
Electromagnetic valve switch unit 1, it is coupled to the input end of alternating voltage,
Voltage transformation unit 2, to the power supply as intergrated circuit 3 defeated after alternating voltage step-down, voltage stabilizing.
Electromagnetic valve switch unit 1 wherein and the particular circuit configurations of intergrated circuit 3 can be all say disclosed circuit structure in documents 1.The designing points of the present embodiment is not also involved in this.
The main inventive object of the present embodiment is: ban primary and secondary coil in Fig. 1 and rectifying unit by voltage transformation unit 2.Particularly, the voltage transformation unit 2 of the present embodiment comprises
Rectification circuit 21, is coupled to the input end of alternating voltage, after carrying out rectification to alternating voltage, export VDC,
Reduction voltage circuit 22, is coupled to the output terminal of rectification circuit 21, Drazin inverse voltage after carrying out reduction regulation by off line on-off mode to VDC,
Mu balanced circuit 23, is coupled to the output terminal of reduction voltage circuit 22, exchanging economize on electricity and compressing into power supply as intergrated circuit 3 after row voltage stabilizing.
The resistance wire F1 that passes through of the present embodiment introduces power firestreak 220VL, introduces zero-power line 220VN by resistance wire F2; Resistance wire F1 is connected to resistance wire F2 by rheostat R1.
Wherein, rectification circuit 21 comprises reference diode D1; The anode of reference diode D1 is connected to power firestreak 220VL by resistance wire F1, and its negative electrode is respectively by the input end being connected to reduction voltage circuit 22 after resistance R5 and inductance L 1.Resistance 5 and inductance L 1 are in parallel connection, and the VDC that its role is to exporting through reference diode D1 carries out filtering.Meanwhile, the two ends of resistance R5, respectively by polar capacitor C1 and C2 ground connection, further increasing the filter effect to VDC.
The reduction voltage circuit 22 of the present embodiment preferably includes the VIPER12A in off line switch mode power supplies regulator chip VIPER series;
The function of each pin of VIPER12A is as follows: 5,6,7,8 pin connect the leakage collection of internal fet, and 1,2 pin are source electrodes of internal fet, and 3 pin are feed back inputs, and 4 pin are VDD.In general the voltage (about about 300V) of the external AC220 of 5,6,7,8 pin after the rectification of bridge heap, 1,2 pin ground connection, 4 pin export 18V, and 3 pin are that the voltage-stabiliser tube D3 of Voltage Feedback and external 18V forms voltage regulation unit.4 to 8 above-mentioned pins connect the negative electrode of reference diode D1 by resistance R5.
Preferably, 3 pins are by polar capacitor C3 ground connection, and 4 pins pass through polar capacitor C4 ground connection, the interference produced with Eliminate highter harmonic.
Preferably, mu balanced circuit 23 comprises voltage stabilizing integrated chip 7809, and the Vin input end of integrated regulator 37809 is coupled in 4 pins of VIPER12A, and the output terminal of its Vout is by electric capacity C7 ground connection.
In addition, the Vin input end of integrated regulator 37809 passes through polar capacitor C5 ground connection, to eliminate the interference of higher harmonics in the 4 pins outputs by VIPER12A further.
As shown in Figure 4, the utility model preferably discloses a kind of induction tap 4, and it is integrated with above-mentioned voltage transformation unit 2.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a control circuit for induction tap, it comprises
Electromagnetic valve switch unit, it is coupled to the input end of alternating voltage,
Voltage transformation unit, to the power supply as intergrated circuit after alternating voltage step-down, voltage stabilizing;
It is characterized in that: described voltage transformation unit comprises
Rectification circuit, is coupled to the input end of alternating voltage, after carrying out rectification to alternating voltage, export VDC,
Reduction voltage circuit, is coupled to the output terminal of rectification circuit, Drazin inverse voltage after carrying out reduction regulation by off line on-off mode to VDC,
Mu balanced circuit, is coupled to the output terminal of reduction voltage circuit, exchanging economize on electricity and compressing into power supply as intergrated circuit after row voltage stabilizing.
2. the control circuit of induction tap according to claim 1, is characterized in that:
Described rectification circuit comprises reference diode; Wherein, the anode of described reference diode is coupled to the first input end of alternating circuit, and its negative electrode is coupled to the input end of reduction voltage circuit.
3. the control circuit of induction tap according to claim 1, is characterized in that:
Described reduction voltage circuit comprises off line switch mode power supplies regulator chip; Wherein, described off line switch mode power supplies regulator chip has the input end that four are all coupled to rectification circuit output end, and its output terminal is coupled to the input end of mu balanced circuit.
4. the control circuit of induction tap according to claim 1, is characterized in that:
Described mu balanced circuit comprises integrated regulator, and the input end of described integrated regulator is coupled to the output terminal of described reduction voltage circuit, and its output terminal passes through capacity earth.
5. an induction tap, is characterized in that: it has the voltage transformation unit in Claims 1-4 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051230.0U CN204512593U (en) | 2015-01-24 | 2015-01-24 | The control circuit of induction tap and apply its induction tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520051230.0U CN204512593U (en) | 2015-01-24 | 2015-01-24 | The control circuit of induction tap and apply its induction tap |
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| Publication Number | Publication Date |
|---|---|
| CN204512593U true CN204512593U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520051230.0U Active CN204512593U (en) | 2015-01-24 | 2015-01-24 | The control circuit of induction tap and apply its induction tap |
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| CN (1) | CN204512593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013728A (en) * | 2017-04-27 | 2017-08-04 | 安徽大学 | A kind of control circuit of touching formula induction tap |
-
2015
- 2015-01-24 CN CN201520051230.0U patent/CN204512593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013728A (en) * | 2017-04-27 | 2017-08-04 | 安徽大学 | A kind of control circuit of touching formula induction tap |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 311122 Yuhang District Xianlin Street Xian Xing Road No. 28 Patentee after: Hangzhou Mingbao Biotechnology Co., Ltd. Address before: Hangzhou City, Zhejiang province 311122 Yuhang District Xianlin Street Xian Xing Road No. 28 Patentee before: Hangzhou Mingbao Food Co., Ltd. |