AU2015101782A4

AU2015101782A4 - A Wireless Controller for LED Christmas Lamp String and the LED Lamp String Thereof

Info

Publication number: AU2015101782A4
Application number: AU2015101782A
Authority: AU
Inventors: Weiqiang Lu
Original assignee: ZHEJIANG SUNGIANT ARTS & CRAFTS CO Ltd
Current assignee: Zhejiang Sungiant Arts & Crafts Co Ltd
Priority date: 2015-03-31
Filing date: 2015-12-11
Publication date: 2016-01-28
Anticipated expiration: 2023-12-11
Also published as: CN104703364A; CN104703364B

Abstract

Abstract The utility model claims a wireless controller for LED Christmas lamp string and the LED lamp string thereof, comprising a wireless controller and an LED lamp string, wherein the wireless controller is internally provided with a switching power circuit, a Wi-Fi wireless master control module and an LED drive circuit; an AC plug, a switching button and an LED lamp string interface are set on the controller; one end of the switching power circuit is electrically connected to an AC power supply through the plug while the other end is connected to the Wi-Fi wireless master control module circuit; the Wi-Fi wireless master control module circuit outputs two control lines to the LED drive circuit, and the LED drive circuit outputs two lines connected to the LED lamp string; the wireless controller for LED Christmas lamp string is connected to the utility socket, and after being connected to the LED Christmas lamp string, the wireless controller can generate Wi-Fi hotspot signal and then any user can access the hotspot through the Wi-Fi interface of a mobile phone or a tablet computer to wirelessly control different flicker modes of the Christmas lamp string through the special software. The utility model has such advantages as small volume, low cost, strong function, long remote control distance and convenient use. MODE SELECTION 1 POWER AC-DC SWITCHING Wi-Fi MASTER LED LAMP STRING LED LAMP LED LAMP POWER SUPPLY u CONTROL MODEL N DRIVE CIRCUIT ACE STRING Figure 1

Description

1 A Wireless Controller for LED Christmas Lamp String and the LED Lamp String Thereof Technical Field [0001] The utility model belongs to the technical field of decorative illumination, especially relating to a wireless controller for LED Christmas lamp string and the LED lamp string thereof. Background Technology [0002] LED lamp strings are not only the main Christmas decorations, but also the indispensable brightening electronic products popular among the public for celebration, household decoration, store decoration, culture activity and public night scene project, thus having wide market prospect. At present, along with the rapid development of the Mobile Internet and the Internet of Things, LED Christmas lamp string market is desiderated to upgrade and reform the intelligence and the informatization of existing products in order to satisfy user demands in the new era. [0003] At present, most LED Christmas lamp strings are inconvenient for people to use, because these LED Christmas lamp strings are manually controlled; most wirelessly controlled Christmas lamp strings are controlled through Bluetooth mode, and such control mode has short remote control distance and is only available for one user rather than several users to control the Christmas lamp string at one time. The combination of Wi-Fi module and MCU controller is usually adopted as current Wi-Fi control mode; although such control mode can conquer the above problems, yet the corresponding costs are significantly increased. Additionally, the split type power supply mode is currently adopted for most LED Christmas lamp strings, namely: an additional AC transformer or an AC-DC external power supply is adopted for an LED Christmas lamp string, and the above AC transformer or the AC-DC external power supply is adopted to power the LED Christmas lamp string controller; however, the above split type power supply has such disadvantages as large volume, heavy weight and high cost for the transformer. In conclusion, various LED Christmas lamp strings currently have following disadvantages: large volume, heavy weight, high cost, short remote control distance, inconvenient use, etc.

2 Content of the Utility Model [0004] The utility model claims a wireless controller for LED Christmas lamp string and the LED lamp string thereof, which can conquer the disadvantages in existing technology for controlling and using LED lamp string: large volume, heavy weight, high cost, short remote control distance, inconvenient use, etc. With the features of simple structure and convenient use, the utility model not only directly employs Wi-Fi module for wireless communication control, but also directly employs Wi-Fi module to control and drive LED lamp string. Additionally, the controller is directly connected to the utility power supply; the controller and the lamp string are powered through AC/DC switching power module in the wireless controller for LED Christmas lamp string, thus conquering such disadvantages of the transitional transformer power supply mode as heavy weight, large volume and high cost. Contrastively, the utility model has such advantages as small volume, low cost, strong function, long remote control distance, convenient wireless control and use. [0005] The technical proposal of the utility model is implemented as follows: [0006] The utility model claims a wireless controller for LED Christmas lamp string and the LED lamp string thereof, comprising a wireless controller and an LED lamp string, wherein the wireless controller is internally provided with a switching power circuit, a Wi-Fi wireless master control module and an LED drive circuit; an AC plug, a switching button and an LED lamp string interface are set on the controller; one end of the switching power circuit is electrically connected to an AC power supply through the plug while the other end is connected to the Wi-Fi wireless master control module circuit; the Wi-Fi wireless master control module circuit outputs two ~ four control lines to the LED drive circuit, and the LED drive circuit outputs two lines connected to the LED lamp string; the wireless controller for LED Christmas lamp string is connected to the utility socket, and after being connected to the LED Christmas lamp string, the wireless controller can automatically generate Wi-Fi hotspot signal and then any user can access the hotspot through the Wi-Fi interface of a mobile phone or a tablet computer to wirelessly control different flicker modes of the Christmas lamp string through the special software.

3 [0007] Further, the switching power circuit includes thermal over-current relay FR1, full-bridge rectifying circuit RD1, filter circuit and voltage-reduction output circuit, wherein one end of thermal over-current relay FR1 is electrically connected to fire line terminal L of the AC power supply and the other end is electrically connected to one end of the full-bridge rectifying circuit, and the other end of the full-bridge rectifying circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the voltage-reduction output circuit, and the first output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT1, and the second output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT2. [0008] Further, the full-bridge rectifying circuit is composed of four silicon rectifier diodes, wherein fire line terminal L and null line terminal N of the AC power supply are respectively connected to the AC input ends of the full-bridge rectifying circuit, and the positive electrode of the DC output end of the full-bridge rectifying circuit is connected to the positive electrode of the circuit while the negative electrode of the full-bridge rectifying circuit is connected to ground terminal GND of the circuit. [0009] Further, the filter circuit is composed of polar capacitor Cl, inductor Li and polar capacitor C2, wherein the positive electrode of polar capacitor C1 and the incoming end of inductor Li are respectively connected to the positive electrode of the DC output end of the full-bridge rectifying circuit, and the negative electrode of polar capacitor C1 is connected to ground terminal GND of the circuit, and the outgoing end of inductor Li is connected to the positive electrode of polar capacitor C2, and the negative electrode of polar C2 is connected to ground terminal GND of the circuit. [0010] Further, the voltage-reduction output circuit includes switching power chip IC1, transformer Ti, resistor Ri, resistor R2, resistor R3, resistor R4, resistor R5, resistor R7, resistor R8, polar capacitor C3, capacitor C4, capacitor C5, polar capacitor C6, polar capacitor C7, capacitor CYi, diode D1, diode D2, diode D3, diode D4 and triode Q1, wherein pin 1 of switching power chip ICi is connected to ground terminal GND of the circuit, pin 2 of switching power chip ICl is connected to one end of resistor R8, pin 3 of switching power chip ICi is connected to the base electrode of triode Q 1, pin 4 of switching power chip IC i is connected to one end of resistor R3 and one end of resistor R4 at the same time, pin 5 of switching power chip ICi is connected to one end of capacitor 4 C5, pin 6 of switching power chip ICl is connected to the positive electrode of capacitor C3, one end of diode D2 and one end of resistor R7 at the same time; the negative electrode of polar capacitor C3 is connected to ground terminal GND of the circuit and the other end of capacitor C5 at the same time, the other end of resistor 8 is connected to the emitter electrode of triode Q1 and one end of resistor R1 at the same time, the other end of resistor R1 is connected to ground terminal GND of the circuit; the other end of resistor R3 is connected to ground terminal GND of the circuit, and the other end of resistor R4 is connected to the other end of diode D2 and the dotted terminal of 1# secondary winding of transformer T1 at the same time, and the opposite terminal of 1# secondary winding of transformer T1 is connected to ground terminal GND of the circuit and one end of capacitor CY1 at the same time, and the other end of capacitor CY1 is connected to ground terminal GND of the circuit; the collector electrode of triode Q1 is connected to one end of diode D1 and the dotted terminal of the primary winding of transformer T1 at the same time; the other end of resistor R7 is connected to the filter circuit, resistor R2, capacitor C4 and the opposite terminal of the primary winding of transformer T1 at the same time; the other end of resistor R2 is connected to the other end of capacitor C4 and the other end of diode D1 at the same time; the dotted terminal of 2# secondary winding of transformer T1 is connected to one end of diode D3, and the other end of diode D3 is connected to the positive electrode of polar capacitor C6 and one end of resistor R5 at the same time; the opposite terminal of 2# secondary winding of transformer Ti, the negative electrode of polar capacitor C6 and the other end of resistor R5 are all connected to ground terminal GND of the circuit; the dotted terminal of 3# secondary winding of transformer T1 is connected to one end of diode D4, and the other end of diode D4 is connected to the positive electrode of polar capacitor C7 and one end of resistor R6 at the same time; the opposite terminal of 3# secondary winding of transformer T1, the negative electrode of polar capacitor C7 and the other end of resistor R6 are all connected to ground terminal GND of the circuit. [0011] Further, output pin OUTPUT1 of the switching power is electrically connected to the joint of resistor R5 and diode D3; the other output pin OUTPUT2 of the switching power is electrically connected to the joint of resistor R6 and diode D4; common output pin GND of the switching power supply is electrically connected to the joint of resistors R5and R6 and ground terminal GND of the circuit.

5 [0012] Further, the Wi-Fi wireless master control module includes a linear voltage-stabilization decoupling filer circuit, a Wi-Fi master control module circuit, a mode selection button, an upgrading debugging interface and an LED drive circuit control signal output line. [0013] Further, the linear voltage-stabilization decoupling filer circuit includes LDO voltage stabilizer U131 and filter decoupling capacitor C131, wherein output pin OUTPUT2 of the switching power supply is electrically connected to input pin INPUT2 of the linear voltage-stabilization decoupling filer circuit, and common output pin GND of the switching power supply is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and input pin INPUT2 is electrically connected to input pin 1 of LDO voltage stabilizer U131, and common pin 2 of LDO voltage stabilizer U131 is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and voltage-stabilization output pin 3 of LDO voltage stabilizer U131 is electrically connected to one end of capacitor C131, and one end of resistor R131 is connected to power supply VCC pin 8 of the Wi-Fi master control module circuit; the other end of capacitor C 131 is electrically connected to common power ground terminal GND and the other end of resistor R131 is connected to chip-selection enabling signal CHPD pin 3 of the Wi-Fi master control module circuit. [0014] Further, the Wi-Fi master control module circuit includes Wi-Fi module U132 and chip-selection enabling pull-up resistor R131, wherein reset pin 1 of Wi-Fi module U132 is electrically connected to pin 1 of upgrading debugging interface P131; ADC pin 2 of Wi-Fi module U132 is null; chip-selection CHPD pin 3 of Wi-Fi module U132 is electrically connected to one end of the enabling pull-up resistor R131, and the other end of enabling pull-up resistor R131 is electrically connected to output pin 3 of LDO chip U131; GPIO16 pin 4 of Wi-Fi module U132 is null; GPIO14 pin 5 of Wi-Fi module U132 is electrically connected to signal pin LEDCON1 of the LED drive circuit; GPIO12 pin 6 of Wi-Fi module U132 is electrically connected to signal pin LEDCON2 of the LED drive circuit; GPIO13 pin 7 of Wi-Fi module U132 is null; power supply VCC pin 8 of Wi-Fi module U132 is electrically connected to the joint of DO voltage stabilizer U131 and one end of filter decoupling capacitor C131; ground terminal GND pin 9 of the power supply of Wi-Fi module U132 is electrically connected to common ground terminal GND pin 2 of LDO voltage-stabilization chip U131; GPIO15 pin 10 of Wi-Fi module U132 is null; GPIO12 pin 11 of Wi-Fi module U132 is electrically connected to 1# end of mode selection button K131; GPIOO pin 12, RXD pin 15 and TXD pin 16 of Wi-Fi module U132 are respectively electrically 6 connected to pin 4, pin 3 and pin 2 of upgrading debugging interface P131; GPIO5 pin 13 and GPIO4 pin 14 of Wi-Fi module U132 are null; meanwhile, PCB-mounted antenna is accessed inside Wi-Fi module U132. [0015] Further, 1# end of mode selection button K131 is electrically connected to GPIO2 pin 11 of Wi-Fi module U132, and 2# end of K131 is connected to common power ground terminal GND. [0016] Further, pin 1, pin 2, pin 3, pin 4 and pin 5 of upgrading debugging interface P131 are respectively electrically connected to pin 1, pin 16, pin 15, pin 12 and common power ground terminal GND of Wi-Fi module U132. [0017] Further, one end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to GPIO14 pin 5 of Wi-Fi module U132, and the other end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to the joint of input signal line LEDCONlof the LED drive circuit and one end of resistor R151; one end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to GPIO12 pin 6 of Wi-Fi module U132, and the other end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to the joint of input signal line LEDCON2 of the LED drive circuit and one end of resistor R152. [0018] Further, the LED drive circuit is composed of resistor R151, resistor R152, resistor R153, resistor R154, NPN triode Q151, NPN triode Q152, PNP triode Q153 and PNP triode Q154, wherein control signal lines LEDCON1 and LEDCON2 from Wi-Fi wireless master control module are respectively electrically connected to one end of resistor R151 and one end of resistor R152, the other end of resistor R151 is electrically connected to the base electrode of NPN triode Q151 and the other end of resistor R152 is electrically connected to the base electrode of NPN triode Q152, and the emitter electrodes of NPN triode Q151 and NPN triode Q152 are connected to common power ground terminal GND; the collector electrodes of NPN triode Q151 and NPN triode Q152 are respectively connected to the collector electrodes of PNP triode Q153 and PNP triode Q154; the emitter electrodes of PNP triode Q153 and PNP triode Q154 are connected to power output pin INPUT1, and pin INPUT1 is connected to output pin OUTPU1 of the switching power supply; the base electrode of PNP triode Q153 is electrically connected to one end of resistor R153, 7 and the other end of resistor R153 is electrically connected to the joint of the collector electrode of PNP triode Q153, the collector electrode of NPN triode Q152 and pin LED1 of LED lamp string; the base electrode of PNP triode Q154 is electrically connected to one end of resistor R154, and the other end of resistor R154 is electrically connected to the joint of the collector electrode of PNP triode Q153, the collector electrode of NPN triode Q151 and pin LED2 of LED lamp string. [0019] Further, the LED lamp string is electrically connected between LED1 pin 1 and LED2 pin 2 of wiring terminal P16. [0020] Further, LED lamp string 17 is composed of one group of LED branches in parallel connection and each group of LED branches are provided with one or more LEDs. [0021] Preferably, LED lamp string 17 is composed of one group of LED branches in serial connection and each group of LED branches are composed of one or more groups of LEDs in parallel connection. [0022] The beneficial effects of the utility model are as follows: users can adopt such electronic devices as mobile phones or tablet computers to connect to the wireless controller for LED Christmas lamp string through Wi-Fi connection so as to remotely and conveniently control the flicker modes of the Christmas lamp; moreover, the utility model enables the wireless controller for LED Christmas lamp string to have such advantages as small volume, light weight, low cost, long remote control distance and convenient use. Description of Figures [0023] In order to more clearly explain the embodiments of the utility model or the technical proposal of the existing technology, the figures used for describing the embodiments or the existing technology will be briefly introduced in the following paragraph. Obviously, the figures for the following description are only some embodiments of the utility model, and under the precondition of not providing creative work, the common technical personnel in this field can also obtain other figures according to these figures in the utility model.

8 [0024] Figure 1 is the global function block diagram of the wireless controller for LED Christmas lamp string and the Christmas lamp string thereof in the utility model; [0025] Figure 2 is the structure diagram of the utility model; [0026] Figure 3 is a circuit diagram of AC-DC switching power supply in the wireless control for LED Christmas lamp string in the utility model; [0027] Figure 4 is a circuit diagram of Wi-Fi master control module in the wireless controller for LED Christmas lamp string in the utility model; [0028] Figure 5 is a circuit diagram of the LED drive circuit in the wireless controller for LED Christmas lamp string in the utility model; [0029] Figure 6 is a circuit diagram of LED lamp string in the utility model; [0030] Figure 7 is another circuit diagram of LED lamp string in the utility model. Specific Implementation [0031] The technical proposal of the embodiments in the utility model will be clearly and completely described in the following paragraph according to the figures in the embodiments of the utility model. Obviously, the embodiments described thereby are only some embodiments of the utility model rather than all embodiments of the utility model. Any other embodiment obtained by the common technical personnel in this field under the precondition of not providing creative work and on the basis of the embodiments in the utility model shall belong to the protection scope of the utility model.

9 [0032] In Figure 1, a wireless controller for LED Christmas lamp string and the Christmas lamp string thereof comprise utility input plug 11, AC-DC switching power supply 12, Wi-Fi master control module 13, mode selection button 14, LED lamp string drive circuit 15, LED lamp string interface 16 and LED lamp string 17, wherein plug 11 is inserted in such utility power interfaces as user socket to provide AC power input for the wireless controller for LED Christmas lamp string; AC-DC switching power supply in the wireless controller is used to further convert AC utility power supply into two paths of DC power supply: one path is taken as the DC power supply of Wi-Fi master control module 13 and the other path is taken as the DC power supply of the LED drive circuit for driving LED lamp string 17; on the one hand, the powered Wi-Fi master control module 13 can automatically establish the corresponding Wi-Fi hotspot which any user can conveniently access through the Wi-Fi interface of a mobile phone or a tablet computer, thus to obtain user's wireless control instruction; on the other hand, the wireless controller can also obtain user's mode switching instruction through the mode selection button; after obtaining user's control instruction and carrying out internal operation, Wi-Fi master control module 13 will send LED control signal to LED drive circuit 15 in order to drive LED lamp string 17 to run according to the working mode designated in the control instruction; lamp string interface 16 is adopted to connect drive circuit 15 and LED lamp string 17 in order to not only ensure the safe and reliable connection between the lamp string and the LED wireless controller, but also enable users to conveniently disassemble the lamp string and the controller for storage. [0033] In Figure 2, a wireless controller for LED Christmas lamp string and the Christmas lamp string thereof comprise controller box 1 and LED lamp string 17, wherein AC-DC switching power supply 12, Wi-Fi master control module 13 and LED lamp string drive circuit 15 are set in the control box; plug 11 and switching button 14 are set on control box 11; one end of the switching power circuit is electrically connected to AC power supply through the plug, and the other end is connected to the control panel circuit which outputs two lines connected to the LED drive circuit; the LED drive circuit outputs two lines connected to the LED lamp string through lamp string interface 16. [0034] Working processes of the wireless controller for LED Christmas lamp string and the Christmas lamp string thereof are as follows: 10 [0035] 1) Connect wireless controller 1 for LED Christmas lamp string to Christmas lamp string 17 through lamp string interface 16; [0035] 2) Connect above wireless controller 1 to the utility socket through plug 11; [0036] 3) Powered wireless controller 1 automatically establishes Wi-Fi hotspot; [0037] 4) A user adopts such electronic device as mobile phone or tablet computer 2 to access the hotspot established by wireless controller 1 through Wi-Fi connection, and then the user can successfully access the hotspot after inputting correct password; [0038] 5) Then, the user opens the special APP software to conveniently control LED Christmas lamp string 17 to work in different modes; [0039] 6) Meanwhile, the user can also directly adopt manual mode switching button 14 on wireless controller 1 to control LED Christmas lamp string 17 to work in different modes. [0040] According to Figures 3-7, a wireless controller for LED Christmas lamp string and the Christmas lamp string are as follows: [0041] Switching power circuit 12 includes thermal over-current relay FRI, full-bridge rectifying circuit RD1, filter circuit and voltage-reduction output circuit, wherein one end of thermal over-current relay FRI is electrically connected to fire line terminal L of the AC power supply and the other end is electrically connected to one end of the full-bridge rectifying circuit, and the other end of the full-bridge rectifying circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the voltage-reduction output circuit, and the first output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT1, and the second output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT2. In case of exceeding the preset 11 current, thermal over-current relay FR1 in this utility model will be fused for short-circuit protection. [0042] Full-bridge rectifying circuit RD 1 is composed of four silicon rectifier diodes, wherein fire line terminal L and null line terminal N of the AC power supply are respectively connected to the AC input ends of the full-bridge rectifying circuit, and the positive electrode of the DC output end of the full-bridge rectifying circuit is connected to the positive electrode of the circuit while the negative electrode of the full-bridge rectifying circuit is connected to ground terminal GND of the circuit. [0043] The filter circuit is composed of polar capacitor Cl, inductor Li and polar capacitor C2, wherein the positive electrode of polar capacitor C1 and the incoming end of inductor Li are respectively connected to the positive electrode of the DC output end of the full-bridge rectifying circuit, and the negative electrode of polar capacitor C1 is connected to ground terminal GND of the circuit, and the outgoing end of inductor Li is connected to the positive electrode of polar capacitor C2, and the negative electrode of polar C2 is connected to ground terminal GND of the circuit. [0044] The application of the full-bridge rectifying circuit and the filter circuit in the utility model can not only filter AC power supply clutter and output smooth DC current after rectification, but also eliminate the clutter interference to the AC power supply for the internal circuit, thus to make the utility model have good EMC effect. [0045] The voltage-reduction output circuit includes switching power chip IC1, transformer Ti, resistor Ri, resistor R2, resistor R3, resistor R4, resistor R5, resistor R7, resistor R8, polar capacitor C3, capacitor C4, capacitor C5, polar capacitor C6, polar capacitor C7, capacitor CYi, diode Di, diode D2, diode D3, diode D4 and triode Qi, wherein pin 1 of switching power chip ICi is connected to ground terminal GND of the circuit, pin 2 of switching power chip ICl is connected to one end of resistor R8, pin 3 of switching power chip ICl is connected to the base electrode of triode Q1, pin 4 of switching power chip ICl is connected to one end of resistor R3 and one end of resistor R4 at the same time, pin 5 of switching power chip ICi is connected to one end of capacitor C5, pin 6 of switching power chip ICi is connected to the positive electrode of capacitor C3, one end of diode D2 and one end of resistor R7 at the same time; the negative electrode of polar 12 capacitor C3 is connected to ground terminal GND of the circuit and the other end of capacitor C5 at the same time, the other end of resistor 8 is connected to the emitter electrode of triode Q1 and one end of resistor R1 at the same time, the other end of resistor R1 is connected to ground terminal GND of the circuit; the other end of resistor R3 is connected to ground terminal GND of the circuit, and the other end of resistor R4 is connected to the other end of diode D2 and the dotted terminal of 1# secondary winding of transformer T1 at the same time, and the opposite terminal of 1# secondary winding of transformer T1 is connected to ground terminal GND of the circuit and one end of capacitor CY1 at the same time, and the other end of capacitor CY1 is connected to ground terminal GND of the circuit; the collector electrode of triode Q1 is connected to one end of diode D1 and the dotted terminal of the primary winding of transformer T1 at the same time; the other end of resistor R7 is connected to the filter circuit, resistor R2, capacitor C4 and the opposite terminal of the primary winding of transformer T1 at the same time; the other end of resistor R2 is connected to the other end of capacitor C4 and the other end of diode D1 at the same time; the dotted terminal of 2# secondary winding of transformer T1 is connected to one end of diode D3, and the other end of diode D3 is connected to the positive electrode of polar capacitor C6 and one end of resistor R5 at the same time; the opposite terminal of 2# secondary winding of transformer Ti, the negative electrode of polar capacitor C6 and the other end of resistor R5 are all connected to ground terminal GND of the circuit; the dotted terminal of 3# secondary winding of transformer T1 is connected to one end of diode D4, and the other end of diode D4 is connected to the positive electrode of polar capacitor C7 and one end of resistor R6 at the same time; the opposite terminal of 3# secondary winding of transformer T1, the negative electrode of polar capacitor C7 and the other end of resistor R6 are all connected to ground terminal GND of the circuit. Capacitor CY1 is used to couple the input and the output of transformer T1 in order to improve the stability. [0046] Output pin OUTPUTi of the switching power is electrically connected to the joint of resistor R5 and diode D3; the other output pin OUTPUT2 of the switching power is electrically connected to the joint of resistor R6 and diode D4; common output pin GND of the switching power supply is electrically connected to the joint of resistors R5and R6 and ground terminal GND of the circuit. [0047] The Wi-Fi wireless master control module includes a linear voltage-stabilization decoupling filer circuit, a Wi-Fi master control module circuit, a mode selection button, an upgrading debugging interface and an LED drive circuit control signal output line.

13 [0048] The linear voltage-stabilization decoupling filer circuit includes LDO voltage stabilizer U131 and filter decoupling capacitor C131, wherein output pin OUTPUT2 of the switching power circuit is electrically connected to input pin INPUT2 of the linear voltage-stabilization decoupling filer circuit, and common output pin GND of the switching power circuit is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and input pin INPUT2 is electrically connected to input pin 1 of LDO voltage stabilizer U 131, and common pin 2 of LDO voltage stabilizer U131 is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and voltage-stabilization output pin 3 of LDO voltage stabilizer U 131 is electrically connected to one end of capacitor C 131, and one end of resistor R131 is connected to power supply VCC pin 8 of the Wi-Fi master control module circuit; the other end of capacitor C131 is electrically connected to common power ground terminal GND and the other end of resistor R131 is connected to chip-selection enabling signal CHPD pin 3 of the Wi-Fi master control module circuit. [0049] The Wi-Fi master control module circuit includes Wi-Fi module U132 and chip-selection enabling pull-up resistor R131, wherein reset pin 1 of Wi-Fi module U132 is electrically connected to pin 1 of upgrading debugging interface P131; ADC pin 2 of Wi-Fi module U132 is null; chip-selection CHPD pin 3 of Wi-Fi module U132 is electrically connected to one end of the enabling pull-up resistor R131, and the other end of enabling pull-up resistor R131 is electrically connected to output pin 3 of LDO chip U131; GPIO16 pin 4 of Wi-Fi module U132 is null; GPIO14 pin 5 of Wi-Fi module U132 is electrically connected to signal pin LEDCON1 of the LED drive circuit; GPIO12 pin 6 of Wi-Fi module U132 is electrically connected to signal pin LEDCON2 of the LED drive circuit; GPIO13 pin 7 of Wi-Fi module U132 is null; power supply VCC pin 8 of Wi-Fi module U132 is electrically connected to the joint of DO voltage stabilizer U131 and one end of filter decoupling capacitor C131; ground terminal GND pin 9 of the power supply of Wi-Fi module U132 is electrically connected to common ground terminal GND pin 2 of LDO voltage-stabilization chip U131; GPIO15 pin 10 of Wi-Fi module U132 is null; GPIO12 pin 11 of Wi-Fi module U132 is electrically connected to 1# end of mode selection button K131; GPIOO pin 12, RXD pin 15 and TXD pin 16 of Wi-Fi module U132 are respectively electrically connected to pin 4, pin 3 and pin 2 of upgrading debugging interface P131; GPIO5 pin 13 and GPIO4 pin 14 of Wi-Fi module U132 are null; meanwhile, PCB-mounted antenna is accessed inside Wi-Fi module U132.

14 [0050] 1# end of mode selection button K131 is electrically connected to GPIO2 pin 11 of Wi-Fi module U132, and 2# end of K131 is connected to common power ground terminal GND. [0051] Pin 1, pin 2, pin 3, pin 4 and pin 5 of upgrading debugging interface P131 are respectively electrically connected to pin 1, pin 16, pin 15, pin 12 and common power ground terminal GND of Wi-Fi module U132. [0052] One end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to GPIO14 pin 5 of Wi-Fi module U132, and the other end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to the joint of input signal line LEDCONlof the LED drive circuit and one end of resistor R151; one end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to GPIO12 pin 6 of Wi-Fi module U132, and the other end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to the joint of input signal line LEDCON2 of the LED drive circuit and one end of resistor R152. [0053] The LED drive circuit is composed of resistor R151, resistor R152, resistor R153, resistor R154, NPN triode Q151, NPN triode Q152, PNP triode Q153 and PNP triode Q154, wherein control signal lines LEDCON1 and LEDCON2 from Wi-Fi wireless master control module are respectively electrically connected to one end of resistor R151 and one end of resistor R152, the other end of resistor R151 is electrically connected to the base electrode of NPN triode Q151 and the other end of resistor R152 is electrically connected to the base electrode of NPN triode Q152, and the emitter electrodes of NPN triode Q151 and NPN triode Q152 are connected to common power ground terminal GND; the collector electrodes of NPN triode Q151 and NPN triode Q152 are respectively connected to the collector electrodes of PNP triode Q153 and PNP triode Q154; the emitter electrodes of PNP triode Q153 and PNP triode Q154 are connected to power output pin INPUT1, and pin INPUTI is connected to output pin OUTPU1 of the switching power supply; the base electrode of PNP triode Q153 is electrically connected to one end of resistor R153, and the other end of resistor R153 is electrically connected to the joint of the collector electrode of PNP triode Q153, the collector electrode of NPN triode Q152 and pin LED1 of LED lamp string; the base electrode of PNP triode Q154 is electrically connected to one end of resistor R154, and the 15 other end of resistor R154 is electrically connected to the joint of the collector electrode of PNP triode Q153, the collector electrode of NPN triode Q151 and pin LED2 of LED lamp string. [0054] LED lamp string is serially connected between LED1 pin 1 and LED2 pin 2 of wiring terminal P16. [0055] LED lamp string is composed of one group of LED branches in parallel connection and each LED branch is provided with one or more LEDs, wherein these LEDs are firstly connected in parallel and then connected in series to form the LED lamp string circuit. In this way, 50%-60% electrical wires can be saved for 10~100 lamps. [0056] Branch is composed of one or more LEDs in parallel connection, wherein these LEDs are firstly connected in series and then connected in parallel to form the LED lamp string circuit. In this way, 40%-50% electrical wires can be saved for 100~1,000 lamps. [0057] In the utility model, ESP8266-12 is adopted as Wi-Fi master control module, wherein ESP8266 as a UART-WiFi unvarnished transmission module with ultra-low power consumption and competitive encapsulation size is especially designed for the mobile devices and for the application in the Internet of Things, and it can connect user's physical devices to Wi-Fi wireless network for Internet or LAN communication, thus to realize networking function. Meanwhile, this module is also provided with GPIO pin to realize the mode switching button, and the internally established AP mode can be adopted to provide wireless control channel through Wi-Fi hotspot, and the module can generate two paths of PWM outputs after receiving button instruction or wireless instruction in order to control the LED drive circuit and further drive the LED lamp string to work. Additionally, one SCM can be eliminated for the utility model, thus saving the circuit volume and the component cost for the wireless controller for LED Christmas lamp string. [0058] The above embodiments are only the preferable embodiments of the utility model, and shall not be used to limit the utility model. Therefore, any alteration, equivalent replacement, improvement, etc. based on the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wireless controller for LED Christmas lamp string, wherein the wireless controller is internally provided with a switching power circuit, a Wi-Fi wireless master control module and an LED drive circuit; an AC plug, a switching button and an LED lamp string interface are set on the controller; one end of the switching power circuit is connected to an AC power supply through the AC plug while the other end is connected to the Wi-Fi wireless master control module; the Wi-Fi wireless master control module circuit outputs two control lines to the LED drive circuit, and the LED drive circuit can output the voltage adaptive to the LED lamp string.

2. The wireless controller for LED Christmas lamp string according to claim 1, wherein the Wi-Fi wireless master control module includes a linear voltage-stabilization decoupling filer circuit, a Wi-Fi master control module circuit, a mode selection button, an upgrading debugging interface and an LED drive circuit control signal output line; The linear voltage-stabilization decoupling filer circuit includes LDO voltage stabilizer U131 and filter decoupling capacitor C13, wherein output pin OUTPUT2 of the switching power circuit is electrically connected to input pin INPUT2 of the linear voltage-stabilization decoupling filer circuit, and common output pin GND of the switching power circuit is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and input pin INPUT2 is electrically connected to input pin 1 of LDO voltage stabilizer U 131, and common pin 2 of LDO voltage stabilizer U131 is electrically connected to common pin GND of the linear voltage-stabilization decoupling filer circuit, and voltage-stabilization output pin 3 of LDO voltage stabilizer U13 1 is electrically connected to one end of capacitor C13 1, and one end of resistor R13 1 is connected to power supply VCC pin 8 of the Wi-Fi master control module circuit; the other end of capacitor C131 is electrically connected to common power ground terminal GND and the other end of resistor R131 is connected to chip-selection enabling signal CHPD pin 3 of the Wi-Fi master control module circuit. 17 The Wi-Fi master control module circuit includes Wi-Fi module U132 and chip-selection enabling pull-up resistor R131, wherein reset pin 1 of Wi-Fi module U132 is electrically connected to pin 1 of upgrading debugging interface P131; ADC pin 2 of Wi-Fi module U132 is null; chip-selection CHPD pin 3 of Wi-Fi module U132 is electrically connected to one end of the enabling pull-up resistor R131, and the other end of enabling pull-up resistor R131 is electrically connected to output pin 3 of LDO voltage stabilizer U 131; GPIO 16 pin 4 of Wi-Fi module U 132 is null; GPIO14 pin 5 of Wi-Fi module U132 is electrically connected to signal pin LEDCON1 of the LED drive circuit; GPIO12 pin 6 of Wi-Fi module U132 is electrically connected to signal pin LEDCON2 of the LED drive circuit; GPIO13 pin 7 of Wi-Fi module U132 is null; power supply VCC pin 8 of Wi-Fi module U132 is electrically connected to the joint of DO voltage stabilizer U131 and one end of filter decoupling capacitor C131; ground terminal GND pin 9 of the power supply of Wi-Fi module U132 is electrically connected to common ground terminal GND pin 2 of LDO voltage stabilizer U131; GPIO15 pin 10 of Wi-Fi module U132 is null; GPIO15 pin 11 of Wi-Fi module U132 is electrically connected to 1# end of mode selection button K131; GPIOO pin 12, RXD pin 15 and TXD pin 16 of Wi-Fi module U132 are respectively electrically connected to pin 4, pin 3 and pin 2 of upgrading debugging interface P131; GPIO5 pin 13 and GPIO4 pin 14 of Wi-Fi module U132 are null; meanwhile, PCB-mounted antenna is accessed inside Wi-Fi module U132. 1# end of mode selection button K131 is electrically connected to GPIO2 pin 11 of Wi-Fi module U132 and 2# end of K131 is connected to common power ground terminal GND; One end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to GPIO14 pin 5 of Wi-Fi module U132, and the other end of control signal output line LEDCON1 of the LED drive circuit is electrically connected to one end of resistor R151; one end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to GPIO 12 pin 6 of Wi-Fi module U132, and the other end of control signal output line LEDCON2 of the LED drive circuit is electrically connected to one end of resistor R152. 18 The LED drive circuit is composed of resistor R151, resistor R152, resistor R153, resistor R154, NPN triode Q151, NPN triode Q152, PNP triode Q153 and PNP triode Q154, wherein control signal lines LEDCON1 and LEDCON2 from Wi-Fi wireless master control module are respectively electrically connected to one end of resistor R151 and one end of resistor R152, the other end of resistor R151 is electrically connected to the base electrode of NPN triode Q151 and the other end of resistor R152 is electrically connected to the base electrode of NPN triode Q152, and the emitter electrodes of NPN triode Q151 and NPN triode Q152 are connected to common power ground terminal GND; the collector electrodes of NPN triode Q151 and NPN triode Q152 are respectively connected to the collector electrodes of PNP triode Q153 and PNP triode Q154; the emitter electrodes of PNP triode Q153 and PNP triode Q154 are connected to power output pin INPUT1, and pin INPUTI is connected to output pin OUTPU1 of the switching power supply; the base electrode of PNP triode Q153 is electrically connected to one end of resistor R153, and the other end of resistor R153 is electrically connected to the joint of the collector electrode of PNP triode Q154, the collector electrode of NPN triode Q152 and pin LED1 of LED lamp string; the base electrode of PNP triode Q154 is electrically connected to one end of resistor R154, and the other end of resistor R154 is connected to the joint of the collector electrode of PNP triode Q153, the collector electrode of NPN triode Q151 and pin LED2 of LED lamp string.

3. The wireless controller for LED Christmas lamp string according to claim 2, wherein the switching power circuit includes thermal over-current relay FRI, full-bridge rectifying circuit, filter circuit and voltage-reduction output circuit; one end of thermal over-current relay FRI is electrically connected to fire line terminal L of the AC power supply and the other end is electrically connected to one end of the full-bridge rectifying circuit, and the other end of the full-bridge rectifying circuit is electrically connected to one end of the filter circuit; the other end of the filter circuit is electrically connected to one end of the voltage-reduction output circuit, and the first output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT1, and the second output of the other end of the voltage-reduction circuit is electrically connected to power output pin OUTPUT2. 19

4. The wireless controller for LED Christmas lamp string according to claim 3, wherein the full-bridge rectifying circuit is composed of four silicon rectifier diodes; fire line terminal L and null line terminal N of the AC power supply are respectively connected to the AC input ends of the full-bridge rectifying circuit, and the positive electrode of the DC output end of the full-bridge rectifying circuit is connected to the positive electrode of the circuit while the negative electrode of the full-bridge rectifying circuit is connected to ground terminal GND of the circuit.

5. The wireless controller for LED Christmas lamp string according to claim 4, wherein the filter circuit is composed of polar capacitor C1, inductor Li and polar capacitor C2; the positive electrode of polar capacitor C1 and the incoming end of inductor L1 are respectively connected to the positive electrode of the DC output end of the full-bridge rectifying circuit, and the negative electrode of polar capacitor C1 is connected to ground terminal GND of the circuit, and the outgoing end of inductor Li is connected to the positive electrode of polar capacitor C2, and the negative electrode of polar C2 is connected to ground terminal GND of the circuit.

6. The wireless controller for LED Christmas lamp string according to any one of claims 3-5, wherein the voltage-reduction output circuit includes switching power chip IC1, transformer Ti, resistor Ri, resistor R2, resistor R3, resistor R4, resistor R5, resistor R7, resistor R8, polar capacitor C3, capacitor C4, polar capacitor C5, capacitor C6, capacitor CY i, diode D1, diode D2, diode D3, diode D4 and triode Qi. Pin 1 of switching power chip ICl is connected to ground terminal GND of the circuit, pin 2 of switching power chip IC i is connected to one end of resistor R8, pin 3 of switching power chip IC i is connected to the base electrode of triode Q1, pin 4 of switching power chip ICl is connected to one end of resistor R3 and one end of resistor R4 at the same time, pin 5 of switching power chip ICi is connected to one end of capacitor C5, pin 6 of switching power chip ICi is connected to the positive electrode of capacitor C3, one end of diode D2 and one end of resistor R7 at the same time. 20 The negative electrode of polar capacitor C3 is connected to ground terminal GND of the circuit and the other end of capacitor C5 at the same time, the other end of resistor 8 is connected to the emitter electrode of triode Q1 and one end of resistor R1 at the same time, the other end of resistor R1 is connected to ground terminal GND of the circuit; the other end of resistor R3 is connected to ground terminal GND of the circuit, and the other end of resistor R4 is connected to the other end of diode D2 and the dotted terminal of 1# secondary winding of transformer T1 at the same time, and the opposite terminal of 1# secondary winding of transformer T1 is connected to ground terminal GND of the circuit and one end of capacitor CY1 at the same time, and the other end of capacitor CY1 is connected to ground terminal GND of the circuit; the collector electrode of triode Q1 is connected to one end of diode D1 and the dotted terminal of the primary winding of transformer T1 at the same time; The other end of resistor R7 is connected to the filter circuit, resistor R2, capacitor C4 and the opposite terminal of the primary winding of transformer T1 at the same time; the other end of resistor R2 is connected to the other end of capacitor C4 and the other end of diode D1 at the same time; The dotted terminal of 2# secondary winding of transformer T1 is connected to one end of diode D3, and the other end of diode D3 is connected to the positive electrode of non-polar capacitor C6 and one end of resistor R5 at the same time; the opposite terminal of 2# secondary winding of transformer Ti, the negative electrode of polar capacitor C6 and the other end of resistor R5 are all connected to ground terminal GND of the circuit; the dotted terminal of 3# secondary winding of transformer T1 is connected to one end of diode D4, and the other end of diode D4 is connected to the positive electrode of polar capacitor C7 and one end of resistor R6 at the same time; the opposite terminal of 3# secondary winding of transformer Ti, the negative electrode of polar capacitor C7 and the other end of resistor R6 are all connected to ground terminal GND of the circuit.

7. The wireless controller for LED Christmas lamp string according to claim 6, wherein output 21 pin OUTPUT 1 of the switching power circuit is electrically connected to the joint of resistor R5 and diode D3; the other output pin OUTPUT2 of the switching power circuit is electrically connected to the joint of resistor R6 and diode D4; common output pin GND of the switching power circuit is electrically connected to the joint of resistors R5and R6 and ground terminal GND of the circuit.

8. The wireless controller for LED Christmas lamp string according to claim 7, wherein the LED lamp string is electrically connected between LED1 pin 1 and LED2 pin 2 of wiring terminal P16.

9. A lamp string based on the wireless controller for LED Christmas lamp string according to claim 1, wherein the LED drive circuit in the wireless controller outputs two lines to the LED lamp string: Said LED lamp string is composed of multiple groups of LED branches in parallel connection and each group of LED branches are provided with one or more LEDs; or, Said LED lamp string is composed of multiple groups of LED branches in serial connection and each group of LED branches are composed of one or more groups of LEDs in parallel connection.