CN209557748U

CN209557748U - The rechargeable induction tap of low cost

Info

Publication number: CN209557748U
Application number: CN201920165329.1U
Authority: CN
Inventors: 罗高; 佘密; 秦生
Original assignee: Shenzhen Pinsida Technology Co Ltd
Current assignee: Shenzhen Pinsida Technology Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2019-10-29
Anticipated expiration: 2029-01-30

Abstract

The utility model relates to induction tap technical fields, more particularly to a kind of rechargeable induction tap of low cost, switching circuit and LED are opened or closed including Micro USB interface, lithium battery charging management circuit, lithium battery, LD02, DC-DC conversion circuit, positive and negative output switching circuit, LD01, infrared transmitter, infrared remote receiver, MCU, solenoid valve, the utility model, which uses, to replace traditional alkaline dry battery with the lithium battery of recharge, reduce waste, it is more environmentally-friendly, it is lower that cost is used for a long time；In addition signal needs not move through amplifying circuit, is handled by software algorithm and receives signal, and plus signal verification achievees the purpose that be precisely controlled.

Description

The rechargeable induction tap of low cost

Technical field

The utility model relates to induction tap technical fields, and in particular to a kind of rechargeable induction tap of low cost.

Background technique

In conventionally known automatic sensing tap, uses MCU as data processor mostly, utilized MCU's CPU, RAM, ROM, timer conter and I/O interface can be combined into the control of automatic sensing tap plus some peripheral cells Device.Working principle is to emit 38KZ infrared signal to transmit circuit using the I/O interface of MCU with single intermittent mode, works as people It washes one's hands and hand can generate infrared light reflection when entering reflective operation area, receives infrared signal to make to receive circuit and make to believe Number processing after be transformed into pulse signal, be transferred to MCU, MCU issues instructions to electromagnetic valve driver according to there is pulse signal, opens Open solenoid valve, water discharge of water faucet；When manpower leaves reflective operation area constantly, reflect blackout, MCU according to pulse-free signal, It issues instruction control driving circuit for electromagnetic valve and closes solenoid valve, tap is cut off the water.The automatic sensing tap of this control model Overall power is small, strong antijamming capability, and not only health but also water conservation, were widely used in public place and wash one's hands；But it is existing Alkaline battery is generally used in induction tap, needs to rechange battery after battery is without electricity, waste of resource and long-term From the point of view of consumer it is at high cost.

Utility model content

In view of the deficiencies of the prior art, the utility model discloses a kind of rechargeable induction taps of low cost, for solving The problem of certainly being mentioned in background technique.

Specific technical solution is as follows:

The rechargeable induction tap of low cost, including Micro USB interface, lithium battery charging management circuit, lithium battery, LD02, DC-DC conversion circuit, positive and negative output switching circuit, LD01, infrared transmitter, infrared remote receiver, MCU, solenoid valve are opened Switching circuit and LED are opened or close, the Micro USB interface is connect by lithium battery charging management circuit with lithium battery, The power output end of the lithium battery has been electrically connected LD02, DC-DC conversion circuit and LD01, the positive and negative output switching electricity The output end electrical connection of the input terminal and DC-DC conversion circuit on road, the solenoid valve open or close the input terminal of switching circuit It being electrically connected with the output end of positive and negative output switching circuit, the input terminal of the infrared transmitter is electrically connected with the output end of LD02, The input terminal of the infrared remote receiver is electrically connected with the output end of infrared transmitter, the output end and MCU of the infrared remote receiver Input terminal electrical connection, the input terminal of the LD01 connect with lithium battery, and the output end of the LD01 and the input terminal of MCU are electric Connection, the output end of the MCU have been electrically connected LD02, DC-DC conversion circuit, positive and negative output switching circuit, infrared emission Device, infrared remote receiver and LED；

Preferably, the infrared transmitter includes infrared transmitting tube LED2, resistance R18, resistance R28, resistance R32 and MOS Pipe Q14, the infrared remote receiver include infrared receiving tube LED3, resistance R33, resistance R34 and capacitor C15, the infrared emission The cathode terminal of pipe LED2 is in parallel with resistance R18 and resistance R28 respectively, the metal-oxide-semiconductor Q14 respectively with resistance R32 and infrared emission The anode tap of pipe LED2 is electrically connected, cathode terminal and resistance the R33 electrical connection of the infrared receiving tube LED3, the infrared receiving tube The anode tap and resistance R34 of LED3 is electrically connected, and one end of the capacitor C15 is electrically connected with the anode tap of infrared receiving tube LED3, The other end of the capacitor C15 is grounded；

Preferably, the lithium battery charging management circuit includes Charge Management IC U10, the Charge Management IC U10's The end PROG is electrically connected with one end of resistance R13, the other end ground connection of the resistance R13, the GND of the Charge Management IC U10 End ground connection, the end Vcc of the Charge Management IC U10 is electrically connected with one end of resistance R11, the other end of the resistance R11 and The electrical connection of Micro USB interface, one end of resistance R5 are electrically connected with resistance R11, and the other end of the resistance R5 is with resistance R7's One end electrical connection, the other end ground connection of the resistance R7, one end of capacitor C3 are electrically connected with the end Vcc of Charge Management IC U10, The other end of the capacitor C3 is grounded, and the end BAT of the Charge Management IC U10 is electrically connected with capacitor C4, the capacitor C4's Other end ground connection；

Preferably, it includes metal-oxide-semiconductor Q7, Q9, Q10, Q11 that the solenoid valve, which opens or closes switching circuit, triode Q15, Q16, solenoid valve pad M+1, M-1, welds together between the pad M+1 and pad M-1, and the metal-oxide-semiconductor Q11 points It is not electrically connected with metal-oxide-semiconductor Q10, resistance R15 and triode Q15, is electrically connected between the triode Q15 and metal-oxide-semiconductor Q10, capacitor One end of C14 is electrically connected by resistance R17 with metal-oxide-semiconductor Q11, the other end ground connection of the capacitor C14, the metal-oxide-semiconductor Q9 difference It is electrically connected with metal-oxide-semiconductor Q7 and triode Q18, the triode Q18 is electrically connected by electric wire with metal-oxide-semiconductor Q7；

Preferably, the inside of the MCU is equipped with AD converter.

The utility model has the advantages that

The utility model reduces waste, more using that can replace traditional alkaline dry battery with the lithium battery of recharge It is lower that cost is used for a long time in environmental protection；In addition signal needs not move through amplifying circuit, is handled by software algorithm and receives signal, Plus signal verification, achievees the purpose that be precisely controlled.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the utility model structural principle block diagram；

Fig. 2 is infrared emission and infrared receiving circuit in the utility model；

Fig. 3 is the MCU structural schematic diagram of the utility model；

Fig. 4 is lithium battery charging management circuit in the utility model；

Fig. 5 is the switching circuit that control solenoid valve opens or closes in the utility model.

Appended drawing reference is as follows: 1, Micro USB interface, 2, lithium battery charging management circuit, 3, lithium battery, 4, LD02,5, DC-DC conversion circuit, 6, positive and negative output switching circuit, 7, LD01,8, infrared transmitter, 9, infrared remote receiver, 10, MCU, 11, Solenoid valve opens or closes switching circuit, 12, LED.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Referring to Fig. 1-5: the rechargeable induction tap of low cost, including Micro usb 1, lithium battery Charge Management electricity Road 2, lithium battery 3, LD024, DC-DC conversion circuit 5, positive and negative output switching circuit 6, LD017, infrared transmitter 8, infrared receiver Device 9, MCU10, solenoid valve open or close switching circuit 11 and LED12, and the Micro USB interface 1 is filled by lithium battery Fulgurite reason circuit 2 is electrically connected with lithium battery 3, and the power output end of the lithium battery 3 has been electrically connected LD024, DC-DC conversion Circuit 5 and LD017, the output end electrical connection of the input terminal and DC-DC conversion circuit 5 of the positive and negative output switching circuit 6 are described The input terminal that solenoid valve opens or closes switching circuit 11 is electrically connected with the output end of positive and negative output switching circuit 6, described infrared The input terminal of transmitter 8 is electrically connected with the output end of LD024, and the input terminal of the infrared remote receiver 9 is defeated with infrared transmitter 8 Outlet electrical connection, the output end of the infrared remote receiver 9 are electrically connected with the input terminal of MCU10, the input terminal and lithium of the LD017 Battery 3 is electrically connected, and the output end of the LD017 is electrically connected with the input terminal of MCU10, and the output end of the MCU10 is electrically connected respectively It is connected to LD024, DC-DC conversion circuit 5, positive and negative output switching circuit 6, infrared transmitter 8, infrared remote receiver 9 and LED12, institute Stating infrared transmitter 8 includes infrared transmitting tube LED2, resistance R18, resistance R28, resistance R32 and metal-oxide-semiconductor Q14, described infrared to connect Receiving device 9 includes infrared receiving tube LED3, resistance R33, resistance R34 and capacitor C15, the cathode terminal of the infrared transmitting tube LED2 It is in parallel with resistance R18 and resistance R28 respectively, the metal-oxide-semiconductor Q14 anode tap with resistance R32 and infrared transmitting tube LED2 respectively Electrical connection, cathode terminal and resistance the R33 electrical connection of the infrared receiving tube LED3, the anode tap of the infrared receiving tube LED3 It is electrically connected with resistance R34, one end of the capacitor C15 is electrically connected with the anode tap of infrared receiving tube LED3, the capacitor C15's Other end ground connection, the lithium battery charging management circuit 2 include Charge Management IC U10, the PROG of the Charge Management IC U10 End is electrically connected with one end of resistance R13, the other end ground connection of the resistance R13, the GND termination of the Charge Management IC U10 The end Vcc on ground, the Charge Management IC U10 is electrically connected with one end of resistance R11, the other end of the resistance R11 with The electrical connection of Micro usb 1, one end of resistance R5 are electrically connected with resistance R11, and the other end of the resistance R5 is with resistance R7's One end electrical connection, the other end ground connection of the resistance R7, one end of capacitor C3 are electrically connected with the end Vcc of Charge Management IC U10, The other end of the capacitor C3 is grounded, and the end BAT of the Charge Management IC U10 is electrically connected with capacitor C4, and the capacitor C4's is another One end ground connection, the solenoid valve open or close switching circuit 11 include metal-oxide-semiconductor Q7, Q9, Q10, Q11, triode Q15, Q16, Solenoid valve pad M+1, M- 1 welds together between the pad M+1 and pad M-1, the metal-oxide-semiconductor Q11 difference It is electrically connected with metal-oxide-semiconductor Q10, resistance R15 and triode Q15, is electrically connected between the triode Q15 and metal-oxide-semiconductor Q10, capacitor One end of C14 is electrically connected by resistance R17 with MOS pipe Q11, the other end ground connection of the capacitor C14, the metal-oxide-semiconductor Q9 difference It is electrically connected with metal-oxide-semiconductor Q7 and triode Q18, the triode Q18 is electrically connected by electric wire with metal-oxide-semiconductor Q7, the MCU10's Inside is equipped with AD converter.

Working principle is as follows in use for the utility model: firstly, repeatable charged lithium cells are powered to LDO1, LDO1 output burning voltage makes MCU work；MCU acquires cell voltage, judges battery voltage whether in working range, if electric Cell voltage is under-voltage, and MCU lights LED, user's charging is reminded, if cell voltage, in normal range (NR), MCU proceeds with one's work；MCU is opened LDO2 is opened, and opens infrared emission control terminal metal-oxide-semiconductor, infrared transmitting tube 1 and pipe 2 is made to emit infrared light, infrared receiving tube 1 and 2 It being respectively received the signal of infrared transmitting tube 1 and 2 and is converted into electric signal, MCU acquires the electric signal of infrared receiving tube conversion, MCU is further processed, and when the signal of MCU processing is triggered to certain condition, MCU identification has object proximity, opens DC-DC conversion With positive and negative output switching circuit, opens solenoid valve, it is close to detect the presence of object again during opens solenoid valve, if always Have, then continue starting solenoid valve, left if perceiving object, after opens solenoid valve, the 1.5S and 120S that is delayed respectively is opened again Dynamic DC-DC conversion and positive and negative output switching circuit, close battery valve；It repeats into next circulation.

Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these It modifies or replaces, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution It encloses.

Claims

1. the rechargeable induction tap of low cost, it is characterised in that: including Micro USB interface (1), lithium battery Charge Management electricity Road (2), lithium battery (3), LD02 (4), DC-DC conversion circuit (5), positive and negative output switching circuit (6), LD01 (7), infrared emission Device (8), infrared remote receiver (9), MCU (10), solenoid valve open or close switching circuit (11) and LED (12), the Micro USB interface (1) is electrically connected by lithium battery charging management circuit (2) with lithium battery (3), the power supply output of the lithium battery (3) End has been electrically connected LD02 (4), DC-DC conversion circuit (5) and LD01 (7), the input of the positive and negative output switching circuit (6) The output end of end and DC-DC conversion circuit (5) is electrically connected, the solenoid valve open or close the input terminal of switching circuit (11) with The output end of positive and negative output switching circuit (6) is electrically connected, the input terminal of the infrared transmitter (8) and the output end of LD02 (4) Electrical connection, the input terminal of the infrared remote receiver (9) are electrically connected with the output end of infrared transmitter (8), the infrared remote receiver (9) output end is electrically connected with the input terminal of MCU (10), and the input terminal of the LD01 (7) is electrically connected with lithium battery (3), described The output end of LD01 (7) is electrically connected with the input terminal of MCU (10), and the output end of the MCU (10) has been electrically connected LD02 (4), DC-DC conversion circuit (5), positive and negative output switching circuit (6), infrared transmitter (8), infrared remote receiver (9) and LED (12)。

2. the rechargeable induction tap of low cost according to claim 1, it is characterised in that: the infrared transmitter (8) Including infrared transmitting tube LED2, resistance R18, resistance R28, resistance R32 and metal-oxide-semiconductor Q14, the infrared remote receiver (9) includes red Outer reception pipe LED3, resistance R33, resistance R34 and capacitor C15, the cathode terminal of the infrared transmitting tube LED2 respectively with resistance R18 In parallel with resistance R28, the metal-oxide-semiconductor Q14 is electrically connected with the anode tap of resistance R32 and infrared transmitting tube LED2 respectively, described red The cathode terminal and resistance R33 of outer reception pipe LED3 is electrically connected, and the anode tap and resistance R34 of the infrared receiving tube LED3 is electrically connected It connects, one end of the capacitor C15 is electrically connected with the anode tap of infrared receiving tube LED3, the other end ground connection of the capacitor C15.

3. the rechargeable induction tap of low cost according to claim 1, it is characterised in that: the lithium battery Charge Management Circuit (2) includes Charge Management IC U10, and the end PROG of the Charge Management IC U10 is electrically connected with one end of resistance R13, institute State the other end ground connection of resistance R13, the end the GND ground connection of the Charge Management IC U10, the end Vcc of the Charge Management IC U10 It being electrically connected with one end of resistance R11, the other end of the resistance R11 is electrically connected with Micro USB interface (1), and the one of resistance R5 End is electrically connected with resistance R11, and the other end of the resistance R5 is electrically connected with one end of resistance R7, another termination of the resistance R7 The one end on ground, capacitor C3 is electrically connected with the end Vcc of Charge Management IC U10, the other end ground connection of the capacitor C3, the charging The end BAT of management IC U10 is electrically connected with capacitor C4, the other end ground connection of the capacitor C4.

4. the rechargeable induction tap of low cost according to claim 1, it is characterised in that: the solenoid valve is opened or closed Closing switching circuit (11) includes metal-oxide-semiconductor Q7, Q9, Q10, Q11, triode Q15, Q16, solenoid valve pad M+1, M-1, the weldering Weld together between contact M+1 and pad M-1, the metal-oxide-semiconductor Q11 has been electrically connected metal-oxide-semiconductor Q10, resistance R15 and three Pole pipe Q15, is electrically connected between the triode Q15 and metal-oxide-semiconductor Q10, and one end of capacitor C14 passes through resistance R17 and metal-oxide-semiconductor Q11 Electrical connection, the other end ground connection of the capacitor C14, the metal-oxide-semiconductor Q9 has been electrically connected metal-oxide-semiconductor Q7 and triode Q18, described Triode Q18 is electrically connected by electric wire with metal-oxide-semiconductor Q7.

5. the rechargeable induction tap of low cost according to claim 1, it is characterised in that: the inside of the MCU (10) Equipped with AD converter.