Electronic coded lock display control circuit with WIFI touch screen

Abstract

The utility model discloses an electronic coded lock display control circuit with a WIFI touch screen, and belongs to the technical field of embedding. The device comprises a power supply conversion module, a main control module, an auxiliary control module, a wireless module, a buzzer module, a touch screen module and a storage module, the power supply conversion module is connected with the main control module, the auxiliary control module, the wireless module, the buzzer module, the touch screen module and the storage module; the power supply conversion module is used for providing power supply voltage required by the operation of each module; the main control module is connected with the auxiliary control module, the wireless module, the buzzer module, the touch screen module and the storage module; according to the electronic coded lock, the ITE chip is adopted as the main control chip, the TFT technology is combined with the electronic code technology, so that the electronic coded lock is provided with a man-machine interface with complete functions, meanwhile, the cost of hardware development of a user is reduced, and the development efficiency of the electronic coded lock is improved.

Description

Technical Field

[0001] The utility model relates to the field of embedded technology, in particular to an electronic password lock display control circuit with a WIFI touch screen. Background Art

[0002] Electronic password lock is an electronic product that controls the circuit or chip by inputting password, thereby controlling the closing of mechanical switch to complete the task of unlocking and locking. There are many types of electronic password locks. At present, the display part of the most widely used electronic password locks in the market is mainly LED digital tube or LCD screen display.

[0003] With the development of society, TFT applications are increasing and the technology is becoming more mature. At present, electronic password locks lack a fully functional human-machine interface design. At the same time, user development costs are high and the development effect is not good. Utility Model Content

[0004] The purpose of the utility model is to provide an electronic password lock display control circuit with a WIFI touch screen to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An electronic password lock display control circuit with a WIFI touch screen comprises a power conversion module, a main control module, a sub-control module, a wireless module, a buzzer module, a touch screen module and a storage module; the power conversion module is connected with the main control module, the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module; the main control module is connected with the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module;

[0007] The power conversion module includes a DC-DC conversion control circuit, the main control module includes an IT9866 chip circuit, a reset circuit, a working mode selection circuit and a communication interface circuit, the auxiliary control module includes a TM52 control circuit, the wireless module includes a WIFI circuit, the buzzer module includes a buzzer circuit, the touch screen module includes a TFT interface circuit and a TFT backlight driving circuit, and the storage module includes a FLASH circuit;

[0008] The reset circuit, the working mode selection circuit, the communication interface circuit, the TM52 control circuit, the WIFI circuit, the buzzer circuit, the TFT interface circuit, the TFT backlight drive circuit, the FLASH circuit and the IT9866 chip circuit are all electrically connected to the DC-DC conversion control circuit;

[0009] The reset circuit, working mode selection circuit, communication interface circuit, TM52 control circuit, WIFI circuit, buzzer circuit, TFT interface circuit, TFT backlight drive circuit, and FLASH circuit are all electrically connected to the IT9866 chip circuit;

[0010] The communication interface circuit is electrically connected to the TM52 control circuit;

[0011] The TFT backlight driving circuit is electrically connected to the TFT interface circuit.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0013] The utility model combines TFT technology with electronic passwords and coordinates the relevant circuits to realize an electronic password lock capable of displaying a fully functional human-machine interface. At the same time, the utility model not only reduces the user's hardware development cost, but also improves the development efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a system structure diagram of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0016] Figure 2 This is a schematic diagram of a DC-DC conversion control circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0017] Figure 3 This is a schematic diagram of a reset circuit of a display control circuit of an electronic password lock with a WIFI touch screen in the utility model;

[0018] Figure 4 This is a schematic diagram of a working mode selection circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0019] Figure 5 This is a schematic diagram of a communication interface circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0020] Figure 6 This is a schematic diagram of the TM52 control circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0021] Figure 7This is a schematic diagram of a WIFI circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0022] Figure 8 This is a schematic diagram of a buzzer circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0023] Fig. 9 This is a schematic diagram of a FLASH circuit of an electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0024] Fig.10 This is the principle diagram of the IT9866 chip circuit of the electronic password lock display control circuit with a WIFI touch screen in the utility model;

[0025] Fig.11 This is a schematic diagram of a TFT backlight driving circuit of a display control circuit of an electronic password lock with a WIFI touch screen in the utility model;

[0026] Fig.12 The utility model is a schematic diagram of a TFT interface circuit of a display control circuit of an electronic password lock with a WIFI touch screen. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1 , the utility model provides a technical solution:

[0029] An electronic password lock display control circuit with a WIFI touch screen comprises a power conversion module, a main control module, a sub-control module, a wireless module, a buzzer module, a touch screen module and a storage module; the power conversion module is connected with the main control module, the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module; the main control module is connected with the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module;

[0030] The power conversion module includes a DC-DC conversion control circuit, the main control module includes an IT9866 chip circuit, a reset circuit, a working mode selection circuit and a communication interface circuit, the auxiliary control module includes a TM52 control circuit, the wireless module includes a WIFI circuit, the buzzer module includes a buzzer circuit, the touch screen module includes a TFT interface circuit and a TFT backlight driving circuit, and the storage module includes a FLASH circuit;

[0031] The reset circuit, the working mode selection circuit, the communication interface circuit, the TM52 control circuit, the WIFI circuit, the buzzer circuit, the TFT interface circuit, the TFT backlight drive circuit, the FLASH circuit and the IT9866 chip circuit are all electrically connected to the DC-DC conversion control circuit;

[0032] The reset circuit, working mode selection circuit, communication interface circuit, TM52 control circuit, WIFI circuit, buzzer circuit, TFT interface circuit, TFT backlight drive circuit, and FLASH circuit are all electrically connected to the IT9866 chip circuit;

[0033] The communication interface circuit is electrically connected to the TM52 control circuit;

[0034] The TFT backlight driving circuit is electrically connected to the TFT interface circuit.

[0035] See also Figure 2 , the power conversion module includes a DC-DC conversion control circuit;

[0036] The DC-DC conversion control circuit includes a chip U4, an inductor L1=2.2uH, an inductor L3=2.2uH, an inductor L5=2.2uH, a capacitor C50, a capacitor C59=10uF, a capacitor C51=100nF, a capacitor C53=100nF, a capacitor C74, a capacitor C77=10uF, a capacitor C75=100nF, a capacitor C52=100nF, a capacitor C70, a capacitor C76=10uF, a capacitor C71=100nF, a capacitor C12=100nF, a capacitor C69=100nF, a capacitor C72=100nF, a capacitor C73=100nF, a capacitor C60=100nF, a capacitor C63=100nF, and a capacitor C64=100nF. 7=100nF, capacitor C8=100nF, capacitor C68=100nF, resistor R76=100KΩ, resistor R12=100KΩ, resistor R35=100KΩ, resistor R34=68KΩ, resistor R8=82KΩ, resistor R77=200KΩ, resistor R78=100KΩ, resistor R74=68KΩ and resistor R75=15KΩ, the chip U4 includes pin 10, pin 7, pin 19, pin 16, pin 9, pin 8, pin 18, pin 21, pin 17, pin 15, pin 13, pin 12, pin 5, pin 4, pin 1, pin 11, pin 14, pin 6, pin 3, pin 20 and pin 2;

[0037] Pin 10, pin 7, pin 19, pin 16, a first end of capacitor C69, a first end of capacitor C72, a first end of capacitor C73, a first end of capacitor C60 and a first end of capacitor C63 in the chip U4 are all electrically connected to the VDD5V terminal;

[0038] Pin 9 in the chip U4 and the first end of the capacitor C67 are both electrically connected to the first end of the resistor R76;

[0039] The pin 8 in the chip U4 and the first end of the capacitor C8 are electrically connected to the first end of the resistor R12;

[0040] The pin 18 in the chip U4 and the first end of the capacitor C68 are electrically connected to the first end of the resistor R35;

[0041] The second end of the capacitor C69, the second end of the capacitor C72, the second end of the capacitor C73, the second end of the capacitor C60, the second end of the capacitor C67, the second end of the capacitor C8 and the second end of the capacitor C68 are all electrically connected to the ground line;

[0042] The second end of the resistor R76, the second end of the resistor R12 and the second end of the resistor R35 are all electrically connected to the VDD5V terminal;

[0043] Pin 21, pin 17, pin 15, pin 13, pin 12, pin 5, pin 4 and pin 1 in the chip U4 are all electrically connected to the ground wire;

[0044] The pin 11 in the chip U4 is electrically connected to the first end of the inductor L1;

[0045] The second end of the inductor L1, the first end of the resistor R74, the first end of the capacitor C70, the first end of the capacitor C76, the first end of the capacitor C71 and the first end of the capacitor C12 are all electrically connected to the VDD3V3 terminal;

[0046] The second end of the resistor R74, the second end of the capacitor C70 and the pin 14 in the chip U4 are all electrically connected to the first end of the resistor R75;

[0047] The second end of the resistor R75, the second end of the capacitor C76, the second end of the capacitor C71 and the second end of the capacitor C12 are all electrically connected to the ground line;

[0048] Pin 6 in the chip U4 is electrically connected to the first end of the inductor L3;

[0049] The second end of the inductor L3, the first end of the resistor R77, the first end of the capacitor C74, the first end of the capacitor C77, the first end of the capacitor C75 and the first end of the capacitor C52 are all electrically connected to the VDD1V8 terminal;

[0050] The second end of the resistor R77, the second end of the capacitor C74 and the pin 3 in the chip U4 are all electrically connected to the first end of the resistor R78;

[0051] The second end of the resistor R78, the second end of the capacitor C77, the second end of the capacitor C75 and the second end of the capacitor C52 are all electrically connected to the ground line;

[0052] The pin 20 in the chip U4 is electrically connected to the first end of the inductor L5;

[0053] The second end of the inductor L5, the first end of the resistor R34, the first end of the capacitor C50, the first end of the capacitor C59, the first end of the capacitor C51 and the first end of the capacitor C53 are all electrically connected to the VDD1V1 terminal;

[0054] The second end of the resistor R34, the second end of the capacitor C50 and the pin 2 in the chip U4 are all electrically connected to the first end of the resistor R8;

[0055] The second end of the resistor R8, the second end of the capacitor C59, the second end of the capacitor C51 and the second end of the capacitor C53 are all electrically connected to the ground line;

[0056] The DC-DC conversion control circuit is used for input-output voltage conversion. The DC-DC conversion control circuit of the present invention converts the input power supply voltage into a voltage within 72V, and the DC-DC conversion control circuit provides a 12V power supply voltage for the buzzer circuit.

[0057] The main control module includes an IT9866 chip circuit, a reset circuit, a working mode selection circuit and a communication interface circuit;

[0058] See also Fig.10 , the IT9866 chip circuit includes chip U2, resistor R5=240Ω, resistor R6=240Ω, resistor R7=12Ω, diode VD11 and capacitor C9=2.2uF, the chip U2 includes pin 11, pin 12, pin 129, pin 42, pin 43, pin 65, pin 66, pin 18, pin 19, pin 20, pin 21, pin 22, pin 24, pin 25, pin 28, pin 30, pin 31, pin 33, pin 34, pin 36, pin 37, pin 38, pin 39, pin 40, pin 53, pin 54, pin 55, pin 56, pin 57, pin 60, pin 61, pin 62, pin 63, pin 64, pin 70, pin 71, Pin 72, Pin 74, Pin 75, Pin 76, Pin 77, Pin 78, Pin 79, Pin 80, Pin 81, Pin 82, Pin 83, Pin 84, Pin 85, Pin 86, Pin 88, Pin 89, Pin 90, Pin 91, Pin 93, Pin 94, Pin 98, Pin 99, Pin 100, Pin 101, Pin 104, Pin 125, Pin 6, Pin 103, Pin 87, Pin 69, Pin 58, Pin 32, Pin 23, Pin 49, Pin 44, Pin 45, Pin 46, Pin 47, Pin 48, Pin 50, Pin 9, Pin 117, Pin 116, Pin 115, Pin 102, Pin 97, Pin 73, Pin 52, Pin 51 and Pin 10;

[0059] The pin 11 in the chip U2 is electrically connected to the reset circuit;

[0060] Pin 12, pin 129 and the first end of resistor R5 in the chip U2 are all electrically connected to the ground line;

[0061] The pin 42 in the chip U2 is electrically connected to the second end of the resistor R5;

[0062] The pin 43 in the chip U2 is electrically connected to the VDD1V8 terminal through the resistor R6;

[0063] The pin 65 in the chip U2 is electrically connected to the first end of the resistor R7 and the first end of the diode;

[0064] The pin 66 in the chip U2, the second end of the resistor R7 and the second end of the diode are all electrically connected to the ground line;

[0065] Pins 18, 19, 20, 21, 22 and 24 of the chip U2 are electrically connected to the FLASH circuit;

[0066] Pins 25, 28, 30, 31, 33 and 34 in the chip U2 are electrically connected to the WIFI circuit;

[0067] Pins 36, 38 and 39 in the chip U2 are electrically connected to the auxiliary control circuit;

[0068] Pins 38 and 39 in the chip U2 are electrically connected to the communication interface circuit;

[0069] Pins 37 and 40 in the chip U2 are electrically connected to the buzzer circuit;

[0070] Pin 53, pin 54, pin 55, pin 56, pin 57, pin 60, pin 61, pin 62, pin 63, pin 64, pin 70, pin 71, pin 72, pin 74, pin 75, pin 76, pin 77, pin 78, pin 79, pin 80, pin 81, pin 82, pin 83, pin 84, pin 85, pin 86, pin 88, pin 89, pin 90, pin 91, pin 93 and pin 94 in the chip U2 are electrically connected to the TFT interface circuit;

[0071] Pins 98, 99, 100 and 101 in the chip U2 are electrically connected to the working mode selection circuit;

[0072] The pin 104 in the chip U2 is electrically connected to the ground wire through the capacitor C9;

[0073] The pin 125 in the chip U2 is electrically connected to the ground wire;

[0074] Pin 6, pin 103, pin 87, pin 69, pin 58, pin 32 and pin 23 of the chip U2 are all electrically connected to the VDD1V8 terminal;

[0075] Pins 49, 44, 45, 46, 47 and 48 of the chip U2 are all electrically connected to the VDD3V3 terminal;

[0076] Pin 50, pin 9, pin 117, pin 116, pin 115, pin 102, pin 97, pin 73, pin 52, pin 51 and pin 10 of the chip U2 are all electrically connected to the VDD1V1 terminal;

[0077] The IT9866 chip circuit uses ITE chip as the main control chip, because ITE chip has the characteristics of high performance, high reliability and low power consumption;

[0078] See also Figure 3 , the reset circuit includes a resistor R1=10KΩ, a resistor R4=100Ω, a capacitor C6=100nF, a capacitor C7=1uF, a diode VD5 and a chip U1, and the chip U1 includes pins 1, 2 and 3;

[0079] The first end of the resistor R1 in the reset circuit, the pin 3 of the chip U1 and the first end of the capacitor C7 are all electrically connected to the VDD3V3 terminal;

[0080] The second end of the capacitor C7 in the reset circuit is electrically connected to the ground line;

[0081] The second end of the resistor R1 in the reset circuit, the pin 1 in the chip U1, the pin 2 in the chip U1 and the first end of the resistor R4 are all electrically connected to the ground line;

[0082] The second end of the resistor R4, the first end of the capacitor C6 and the first end of the diode VD5 in the reset circuit are all electrically connected to the pin 11 in the chip U2;

[0083] The second end of the capacitor C6 in the reset circuit is electrically connected to the ground line;

[0084] The second end of the diode VD5 in the reset circuit is electrically connected to the ground line;

[0085] The reset circuit is used to process the high-level signal transmitted by the target device when the target device freezes, so that after the signal is transmitted back to the main control chip, the reset circuit is controlled to work and the circuit is initialized;

[0086] See also Figure 4 , the working mode selection circuit includes a resistor R2, a resistor R11=1KΩ, a resistor R13=10KΩ, a resistor R14=10KΩ, a resistor R15=1KΩ, a resistor R16=10KΩ, a resistor R17=10KΩ, and a socket J3, wherein the socket J3 includes a pin 1 and a pin 2;

[0087] The first end of the resistor R11, the first end of the resistor R15 and the first end of the resistor R16 in the working mode selection circuit are all electrically connected to the VDD3V3 terminal;

[0088] The second end of the resistor R11 in the working mode selection circuit is electrically connected to the first end of the resistor R2;

[0089] The second end of the resistor R2 and the first end of the resistor R13 in the working mode selection circuit are both electrically connected to the pin 100 in the chip U2;

[0090] The second end of the resistor R15 in the working mode selection circuit is electrically connected to the pin 1 in the socket J3;

[0091] Pin 2 of the socket J3 in the working mode selection circuit and the first end of the resistor R14 are both electrically connected to pin 101 in the chip U2;

[0092] The second end of the resistor R16 in the working mode selection circuit is electrically connected to the pin 98 in the chip U2;

[0093] The second end of the resistor R13, the second end of the resistor R14 and the first end of the resistor R17 in the working mode selection circuit are all electrically connected to the ground line;

[0094] The second end of the resistor R17 in the working mode selection circuit is electrically connected to the pin 99 in the chip U2;

[0095] The working mode selection circuit is used to control the working mode of the circuit;

[0096] See also Figure 5 , the communication interface circuit includes a connector CON2, a diode D4, a diode D1, a capacitor C10=100uF, a capacitor C11=100nF, a capacitor C58=1nF, a capacitor C61=1nF, a resistor R41=300Ω, a resistor R42=300Ω, a resistor R43=10KΩ, a resistor R44=10KΩ, a resistor R46=10KΩ, a resistor R48, a resistor R79, a resistor R80, a resistor R81, a resistor R106=10KΩ, a transistor Q3 and a transistor Q4, the connector CON2 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5 and a pin 6, and the transistor Q3 includes a pin 1, a pin 2 and a pin 3;

[0097] Pin 1, pin 5 and pin 6 of the connector CON2 in the communication interface circuit are all electrically connected to the ground wire;

[0098] Pin 2 of connector CON2 in the communication interface circuit, a first end of diode D4, a first end of diode D1, a first end of capacitor C10 and a first end of capacitor C11 are all electrically connected to the VDD5V terminal;

[0099] The second end of the diode D4, the second end of the diode D1, the second end of the capacitor C10 and the second end of the capacitor C11 in the communication interface circuit are all electrically connected to the ground line;

[0100] Pin 3 of the connector CON2 in the communication interface circuit is electrically connected to the first end of the capacitor C58 and the first end of the resistor R41;

[0101] The second end of the capacitor C58 in the communication interface circuit is electrically connected to the ground line;

[0102] The second end of the resistor R41 in the communication interface circuit is electrically connected to the pin 2 of the transistor Q3;

[0103] Pin 1 of the transistor Q3 in the communication interface circuit is electrically connected to the first end of the resistor R43;

[0104] Pin 3 of the transistor Q3 in the communication interface circuit is electrically connected to the first end of the resistor R44, the first end of the resistor R80 and the first end of the resistor R48;

[0105] The second end of the resistor R80 in the communication interface circuit is electrically connected to the TM52 control circuit;

[0106] The second end of the resistor R48 in the communication interface circuit is electrically connected to the pin 39 in the chip U2;

[0107] Pin 4 of the connector CON2 in the communication interface circuit is electrically connected to the first end of the capacitor C61 and the first end of the resistor R42;

[0108] The second end of the capacitor C61 in the communication interface circuit is electrically connected to the ground line;

[0109] The second end of the resistor R42 in the communication interface circuit is electrically connected to the first end of the transistor Q4 and the first end of the resistor R46;

[0110] The second end of the resistor R46 in the communication interface circuit is electrically connected to the VDD3V3 terminal;

[0111] The second end of the transistor Q4 in the communication interface circuit is electrically connected to the first end of the resistor R79 and the first end of the resistor R81;

[0112] The second end of the resistor R79 in the communication interface circuit is electrically connected to the pin 38 in the chip U2;

[0113] The second end of the resistor R81 in the communication interface circuit is electrically connected to the TM52 control circuit;

[0114] The third end of the transistor Q4 in the communication interface circuit is electrically connected to the first end of the resistor R106;

[0115] The second end of the resistor R43, the second end of the resistor R106 and the second end of the resistor R44 in the communication interface circuit are all electrically connected to the VDD3V3 terminal;

[0116] The communication interface circuit is used to establish a communication channel between the main control chip and the target device.

[0117] See also Figure 6 , the auxiliary control module includes a TM52 control circuit;

[0118] The TM52 control circuit includes a chip U7, a capacitor C65=100nF, a capacitor C66=4.7uF, a resistor R82=33Ω, a resistor R83=33Ω, a resistor R86=1KΩ and a connector CON6, the chip U7 includes pin 2, pin 3, pin 7, pin 9, pin 11, pin 12, pin 14, pin 15 and pin 20, and the connector CON6 includes pin 1, pin 2, pin 3 and pin 4;

[0119] Pin 2 in the chip U7 is electrically connected to pin 2 in the connector CON6;

[0120] Pin 3 in the chip U7 is electrically connected to pin 3 in the connector CON6;

[0121] Pin 7 of the chip U7, pin 4 of the connector CON6, a first end of the capacitor C65, and a first end of the capacitor C66 are all electrically connected to the ground line;

[0122] Pin 9 of the chip U7, pin 1 of the connector CON6, the second end of the capacitor C65 and the second end of the capacitor C66 are all electrically connected to the VDD3V3 terminal;

[0123] Pin 11 in the chip U7 is electrically connected to the communication interface circuit;

[0124] Pin 12 in the chip U7 is electrically connected to the communication interface circuit;

[0125] Pin 14 in the chip U7 is electrically connected to pin 38 in the chip U2 via resistor R83;

[0126] Pin 15 in the chip U7 is electrically connected to pin 39 in the chip U2 via resistor R82;

[0127] Pin 20 in the chip U7 is electrically connected to pin 36 in the chip U2 via resistor R86;

[0128] The TM52 control circuit is used to control the main control chip to perform low power consumption mode.

[0129] See also Figure 7 , the wireless module includes a WIFI circuit;

[0130] The WIFI circuit includes a chip U8, a socket J2, a capacitor C79=100nF, a capacitor C84=4.7uF, a capacitor C85=1uF, a resistor R22=100Ω, a resistor R108=10KΩ, a resistor R111=33Ω, a resistor R112=33Ω, a resistor R113=33Ω, a resistor R114=33Ω, a resistor R115=33Ω, a resistor R116=33Ω, a resistor R117=10KΩ, a resistor R118=10KΩ, a resistor R119=10KΩ, a resistor R120=10KΩ, and a resistor R121=10KΩ. 1=10KΩ and resistor R122=10KΩ, the chip U8 includes pin 1, pin 2, pin 3, pin 8, pin 16, pin 17, pin 18, pin 19, pin 20, pin 21, pin 22, pin 27, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, pin 48, pin 49, pin 50, pin 51, pin 52, pin 53, pin 54 and pin 55, and the socket J2 includes pin 1, pin 2, pin 3 and pin 4;

[0131] Pin 1, pin 2, pin 27, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, pin 48, pin 49, pin 50, pin 51, pin 52, pin 53, pin 54 and pin 55 of the chip U8 are all electrically connected to the ground wire;

[0132] Pin 3 in the chip U8, the first end of the capacitor C84, and the second end of the capacitor C79 are all electrically connected to the VDD3V3 terminal;

[0133] The second end of the capacitor C84 and the second end of the capacitor C79 are both electrically connected to the ground line;

[0134] Pin 8 in the chip U8 is electrically connected to the first end of the resistor R22;

[0135] The second end of the resistor R22 is electrically connected to the first end of the resistor R108 and the first end of the capacitor C85;

[0136] The second end of the resistor R108 is electrically connected to the VDD3V3 terminal;

[0137] The second end of the capacitor C85 is electrically connected to the ground line;

[0138] The pin 16 in the chip U8 is electrically connected to the first end of the resistor R111 and the first end of the resistor R117;

[0139] The pin 17 in the chip U8 is electrically connected to the first end of the resistor R115 and the first end of the resistor R121;

[0140] The pin 18 in the chip U8 is electrically connected to the first end of the resistor R116 and the first end of the resistor R122;

[0141] The pin 19 in the chip U8 is electrically connected to the first end of the resistor R112 and the first end of the resistor R118;

[0142] The pin 20 in the chip U8 is electrically connected to the first end of the resistor R113, the first end of the resistor R119 and the pin 4 in the socket J2;

[0143] The pin 22 in the chip U8 is electrically connected to the first end of the resistor R114 and the first end of the resistor R120;

[0144] The second end of the resistor R117 is electrically connected to the ground line;

[0145] The second end of the resistor R118, the second end of the resistor R119, the second end of the resistor R120, the second end of the resistor R121 and the second end of the resistor R122 are all electrically connected to the VDD3V3 terminal;

[0146] The second end of the resistor R111 is electrically connected to the pin 25 in the chip U2;

[0147] The second end of the resistor R112 is electrically connected to the pin 34 in the chip U2;

[0148] The second end of the resistor R113 is electrically connected to the pin 28 in the chip U2;

[0149] The second end of the resistor R114 is electrically connected to the pin 33 in the chip U2;

[0150] The second end of the resistor R115 is electrically connected to the pin 30 in the chip U2;

[0151] The second end of the resistor R116 is electrically connected to the pin 31 in the chip U2;

[0152] Pin 21 of the chip U8 is electrically connected to pin 1 of the socket J2

[0153] Pins 2 and 3 of the socket J2 are electrically connected to the ground wire;

[0154] The WIFI circuit is used to control the main control chip through WIFI to achieve remote operation of the password lock.

[0155] See also Figure 8 , the buzzer module includes a buzzer circuit;

[0156] The buzzer circuit includes a connector CON5, a transistor Q2, a transistor Q5, a transistor Q10, a resistor R38=2.2KΩ, a resistor R39=10KΩ, a resistor R64=33Ω, a resistor R62=10KΩ, a resistor R57=100Ω, a resistor R56=1KΩ, a resistor R58=100Ω, a resistor R59=10KΩ, a resistor R60=33Ω and a capacitor C48=47uF, the connector CON5 includes a pin 1, a pin 2, a pin 3, a pin 4 and a pin 5, the transistor Q2 includes a pin 1, a pin 2 and a pin 3, the transistor Q5 includes a pin 1, a pin 2 and a pin 3, and the transistor Q10 includes a pin 1, a pin 2 and a pin 3;

[0157] Pin 1 of the connector CON5 is electrically connected to the first end of the resistor R57, the first end of the resistor R56 and pin 3 of the transistor Q2;

[0158] Pin 2 of the connector CON5 is electrically connected to the second end of the resistor R56 and the first end of the resistor R58;

[0159] The second end of the resistor R57 is electrically connected to the first end of the capacitor C48;

[0160] The second end of the capacitor C48, the first end of the resistor R62 and the pin 2 of the transistor Q10 are all electrically connected to the ground line;

[0161] The second end of the resistor R62 and the pin 1 of the transistor Q10 are both electrically connected to the first end of the resistor R64;

[0162] The second end of the resistor R64 is electrically connected to the pin 40 in the chip U2;

[0163] Pin 3 of the transistor Q10 is electrically connected to the first end of the resistor R39 and the pin 1 of the transistor Q2 through the resistor R38;

[0164] The second end of the resistor R39 and the pin 2 of the transistor Q2 are both electrically connected to VDD12V;

[0165] The second end of the resistor R58 is electrically connected to the pin 3 of the transistor Q5;

[0166] Pin 1 of the transistor Q5 is electrically connected to a first end of the resistor R59 and a first end of the resistor R60;

[0167] Pin 2 of the transistor Q5 and the second end of the resistor R59 are both electrically connected to the ground wire;

[0168] The second end of the resistor R60 is electrically connected to the pin 37 in the chip U2;

[0169] Pin 3 of the connector CON5 is electrically connected to VDD12V;

[0170] Pins 4 and 5 of the connector CON5 are electrically connected to the ground wire;

[0171] The buzzer circuit is used for voice broadcasting during touch screen operation.

[0172] The touch screen module includes a TFT interface circuit and a TFT backlight driving circuit;

[0173] See also Fig.12The TFT interface circuit includes a connector CON3, a capacitor C2 = 100nF, a capacitor C3 = 4.7uF, a capacitor C64 = 100nF, a capacitor C65 = 4.7uF, a capacitor C87 = 100nF, a capacitor C13 = 20pF, a capacitor C4 = 20pF, a capacitor C49 = 20pF, a capacitor C54 = 20pF, a capacitor C88 = 20pF, a capacitor C89 = 20pF, a capacitor C90 = 20pF, a capacitor C91 = 20pF, a capacitor C92 = 20pF, a capacitor C55 = 100nF, a diode VD6, a diode VD7, a diode Tube VD8, diode VD9, resistor R55 = 1KΩ, resistor R72 = 1KΩ, resistor R87 = 1KΩ, resistor R88 = 1KΩ, resistor R89 ​​= 1KΩ, resistor R23 = 1KΩ, resistor R24 ​​= 1KΩ, resistor R25 = 1KΩ, resistor R26 = 1KΩ, resistor R27 = 1KΩ, resistor R28 = 1KΩ, resistor R45 = 1KΩ, resistor R47 = 1KΩ, resistor R49 = 1KΩ, resistor R50 = 1KΩ, resistor R51 = 1KΩ, resistor R52 = 1KΩ, resistor R53 = 1KΩ, resistor R54 = 1KΩ, resistor R29=1KΩ, resistor R30=1KΩ, resistor R31=1KΩ, resistor R32=1KΩ, resistor R9=1KΩ, resistor R33=1KΩ, resistor R36=1KΩ, resistor R37=1KΩ, resistor R84=10KΩ, resistor R85=10KΩ, resistor R90=10KΩ, resistor R69=10KΩ, resistor R40=33Ω, resistor R61=33Ω, resistor R70=2.2KΩ, resistor R71=2.2KΩ, resistor R66=33Ω and resistor R68=33Ω, the connector CON3 includes pin 1, pin 2, Pin 3, Pin 5, Pin 6, Pin 7, Pin 8, Pin 9, Pin 10, Pin 11, Pin 12, Pin 13, Pin 14, Pin 15, Pin 18, Pin 19, Pin 20, Pin 21, Pin 22, Pin 23, Pin 26, Pin 27, Pin 28, Pin 29, Pin 30, Pin 31, Pin 34, Pin 35, Pin 36, Pin 37, Pin 38, Pin 40, Pin 41, Pin 42, Pin 44, Pin 45, Pin 46, Pin 47, Pin 48, Pin 49, Pin 50, Pin 51, Pin 52 and Pin 53;

[0174] Pin 1 of the connector CON3, the first end of the capacitor C2 and the first end of the capacitor C3 are all electrically connected to the ground line;

[0175] Pin 2, pin 3, the second end of capacitor C2 and the second end of capacitor C3 in the connector CON3 are all electrically connected to the VDD3V3 terminal;

[0176] Pin 5 of the connector CON3 is electrically connected to pin 63 of the chip U2 through resistor R55;

[0177] Pin 5 of the connector CON3 is electrically connected to the ground wire through capacitor C88;

[0178] Pin 6 of the connector CON3 is electrically connected to pin 64 of the chip U2 through resistor R72;

[0179] Pin 6 of the connector CON3 is electrically connected to the ground wire through capacitor C89;

[0180] Pin 7 of the connector CON3 is electrically connected to pin 61 of the chip U2 through resistor R87;

[0181] Pin 7 of the connector CON3 is electrically connected to the ground wire through capacitor C90;

[0182] Pin 8 of the connector CON3 is electrically connected to pin 62 of the chip U2 through resistor R88;

[0183] Pin 8 of the connector CON3 is electrically connected to the ground wire through capacitor C91;

[0184] Pin 9 of the connector CON3 is electrically connected to pin 60 of the chip U2 through resistor R89;

[0185] Pin 9 of the connector CON3 is electrically connected to the ground wire through capacitor C92;

[0186] Pin 9 of the connector CON3 is electrically connected to a first end of the resistor R90 and a first end of the capacitor C87;

[0187] The second end of the capacitor C87 is electrically connected to the ground line;

[0188] The second end of the resistor R90, the first end of the resistor R85 and the first end of the resistor R84 are all electrically connected to the VDD3V3 terminal;

[0189] The second end of the resistor R85 is electrically connected to the pin 37 of the connector CON3;

[0190] The second end of the resistor R84 is electrically connected to the pin 38 of the connector CON3;

[0191] Pin 10 in the connector CON3 is electrically connected to pin 94 in the chip U2 through resistor R37;

[0192] Pin 11 of the connector CON3 is electrically connected to pin 93 of the chip U2 through resistor R36;

[0193] Pin 12 of the connector CON3 is electrically connected to pin 91 of the chip U2 through resistor R33;

[0194] Pin 13 of the connector CON3 is electrically connected to pin 90 of the chip U2 through resistor R32;

[0195] Pin 14 of the connector CON3 is electrically connected to pin 89 of the chip U2 through resistor R31;

[0196] Pin 15 of the connector CON3 is electrically connected to pin 88 of the chip U2 through resistor R30;

[0197] Pin 18 in the connector CON3 is electrically connected to pin 86 in the chip U2 through resistor R29;

[0198] Pin 19 in the connector CON3 is electrically connected to pin 85 in the chip U2 through resistor R54;

[0199] Pin 20 in the connector CON3 is electrically connected to pin 84 in the chip U2 through resistor R53;

[0200] The pin 21 in the connector CON3 is electrically connected to the pin 83 in the chip U2 through the resistor R52;

[0201] Pin 22 of the connector CON3 is electrically connected to pin 82 of the chip U2 through resistor R51;

[0202] Pin 23 of the connector CON3 is electrically connected to pin 81 of the chip U2 through resistor R50;

[0203] Pin 26 of the connector CON3 is electrically connected to pin 80 of the chip U2 through resistor R49;

[0204] Pin 27 of the connector CON3 is electrically connected to pin 79 of the chip U2 through resistor R47;

[0205] Pin 28 in the connector CON3 is electrically connected to pin 78 in the chip U2 through resistor R45;

[0206] Pin 29 in the connector CON3 is electrically connected to pin 77 in the chip U2 through resistor R28;

[0207] Pin 30 in the connector CON3 is electrically connected to pin 76 in the chip U2 through resistor R27;

[0208] The pin 31 in the connector CON3 is electrically connected to the pin 75 in the chip U2 through the resistor R26;

[0209] The pin 34 in the connector CON3 is electrically connected to the ground wire;

[0210] Pin 35 in the connector CON3 is electrically connected to pin 74 in the chip U2 through resistor R23;

[0211] Pin 35 of the connector CON3 is electrically connected to the ground wire through capacitor C54;

[0212] Pin 36 of the connector CON3 is electrically connected to pin 70 of the chip U2 through resistor R9;

[0213] The pin 36 of the connector CON3 is electrically connected to the ground wire through the capacitor C13;

[0214] Pin 37 of the connector CON3 is electrically connected to pin 71 of the chip U2 through resistor R24;

[0215] The pin 37 of the connector CON3 is electrically connected to the ground wire through the capacitor C4;

[0216] Pin 38 in the connector CON3 is electrically connected to pin 72 in the chip U2 through resistor R25;

[0217] Pin 38 of the connector CON3 is electrically connected to the ground wire through capacitor C49;

[0218] The pin 40 in the connector CON3 is electrically connected to the ground wire;

[0219] Pins 41 and 42 of the connector CON3 are electrically connected to the TFT backlight driving circuit;

[0220] The pin 44 of the connector CON3, the first end of the capacitor C64 and the first end of the capacitor C62 are all electrically connected to the ground line;

[0221] The pin 45 of the connector CON3, the second end of the capacitor C64 and the second end of the capacitor C62 are all electrically connected to the VDD3V3 terminal;

[0222] The pin 46 in the connector CON3 is electrically connected to the ground wire;

[0223] The pin 47 of the connector CON3 is electrically connected to the first end of the diode VD6, the first end of the resistor R69, the first end of the capacitor C55 and the first end of the resistor R40;

[0224] The second end of the diode VD6 is electrically connected to the ground line;

[0225] The second end of the resistor R69 is electrically connected to the VDD3V3 terminal;

[0226] The second end of the capacitor C55 is electrically connected to the ground line;

[0227] The second end of the resistor R40 is electrically connected to the pin 57 in the chip U2;

[0228] The pin 48 of the connector CON3 is electrically connected to the first end of the diode VD7 and the first end of the resistor R61;

[0229] The second end of the diode VD7 is electrically connected to the ground line;

[0230] The second end of the resistor R61 is electrically connected to the pin 56 in the chip U2;

[0231] The pin 49 of the connector CON3 is electrically connected to the first end of the diode VD8 and the first end of the resistor R68;

[0232] The second end of the diode VD8 is electrically connected to the ground line;

[0233] The second end of the resistor R68 and the first end of the resistor R71 are both electrically connected to the pin 54 in the chip U2;

[0234] The second end of the resistor R71 is electrically connected to the VDD3V3 terminal;

[0235] The pin 50 in the connector CON3 is electrically connected to the first end of the diode VD9 and the first end of the resistor R66;

[0236] The second end of the diode VD9 is electrically connected to the ground line;

[0237] The second end of the resistor R66 and the first end of the resistor R70 are both electrically connected to the pin 55 in the chip U2;

[0238] The second end of the resistor R70 is electrically connected to the VDD3V3 terminal;

[0239] Pins 51, 52 and 53 of the connector CON3 are all electrically connected to the ground wire;

[0240] The TFT interface circuit is used for circuit connection and signal transmission of the touch screen;

[0241] See also Fig.11, the TFT backlight driving circuit includes a chip U6, an inductor L2=10uH, a diode D3, a capacitor C80=4.7uF, a capacitor C81=100nF, a capacitor C82=1uF, a capacitor C83=100nF, a capacitor C78=100nF, a resistor R92=13Ω and a resistor R73=1KΩ, the chip U6 includes pins 1, 3, 4, 5, 6 and 7, and the inductor L2 includes pins 1 and 2;

[0242] Pin 1 in the chip U6 is electrically connected to the first end of the resistor R92 and pin 41 in the connector CON3;

[0243] The second end of the resistor R92 is electrically connected to the ground line;

[0244] Pins 3 and 7 of the chip U6 are both electrically connected to the ground wire;

[0245] Pin 4 of the chip U6 is electrically connected to pin 2 of the inductor L2 and the first end of the diode D3;

[0246] Pin 1 of the inductor L2, pin 6 of the chip U6, the first end of the capacitor C81 and the first end of the capacitor C80 are all electrically connected to the VDD5V terminal;

[0247] The second end of the capacitor C81 and the second end of the capacitor C80 are both electrically connected to the ground line;

[0248] The second end of the diode D3, the first end of the capacitor C82, the first end of the capacitor C83 and the first end of the capacitor C78 are all electrically connected to the pin 42 of the connector CON3;

[0249] The second end of the capacitor C82, the second end of the capacitor C83 and the second end of the capacitor C78 are all electrically connected to the ground line;

[0250] Pin 5 in the chip U6 is electrically connected to pin 53 in the chip U2 via resistor R73;

[0251] The TFT backlight driving circuit is used to adjust the brightness of the touch screen.

[0252] See also Fig. 9 , the storage module includes a FLASH circuit;

[0253] The FLASH circuit includes a chip U3, a chip U5, a capacitor C56=1uF, a resistor R19=10KΩ, a resistor R20=10KΩ, a resistor R21=10KΩ, a resistor R100=300Ω, a resistor R101=300Ω, a resistor R102=300Ω, a resistor R103=300Ω, a resistor R104=300Ω and a resistor R105=300Ω, the chip U3 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5, a pin 6, a pin 7 and a pin 8, the chip U5 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5, a pin 6, a pin 7, a pin 8 and a pin 9;

[0254] Pin 1 in the chip U3 and pin 1 in the chip U5 are both electrically connected to the VDD3V3 terminal through a resistor R19;

[0255] Pin 1 in the chip U3 and pin 1 in the chip U5 are both electrically connected to pin 18 in the chip U2 via resistor R100;

[0256] Pin 2 in the chip U3 and pin 2 in the chip U5 are both electrically connected to pin 20 in the chip U2 via resistor R102;

[0257] Pin 3 in the chip U3 and pin 3 in the chip U5 are both electrically connected to the VDD3V3 terminal through resistor R20;

[0258] Pin 3 in the chip U3 and pin 3 in the chip U5 are both electrically connected to pin 21 in the chip U2 via resistor R103;

[0259] Pin 4 in the chip U3, pin 4 in the chip U5 and pin 9 in the chip U5 are all electrically connected to the ground wire;

[0260] Pin 5 in the chip U3 and pin 5 in the chip U5 are both electrically connected to pin 19 in the chip U2 via resistor R101;

[0261] Pin 6 in the chip U3 and pin 6 in the chip U5 are both electrically connected to pin 24 in the chip U2 via resistor R105;

[0262] Pin 7 in the chip U3 and pin 7 in the chip U5 are both electrically connected to the VDD3V3 terminal through a resistor R21;

[0263] Pin 7 in the chip U3 and pin 7 in the chip U5 are both electrically connected to pin 22 in the chip U2 via resistor R104;

[0264] Pin 8 in the chip U3, pin 8 in the chip U5 and the first end of the capacitor C56 are all electrically connected to the VDD3V3 terminal;

[0265] The second end of the capacitor C56 is electrically connected to the ground line;

[0266] The FLASH circuit is used for external expansion storage of data processed by the main control chip.

[0267] The working principle of this utility model:

[0268] The power conversion module is used to provide the power supply voltage required for the operation of each module, and the data processed by the main control module is externally expanded and stored through the storage module;

[0269] The user operates through the touch screen module or the wireless module. After receiving the signal, the main control module performs corresponding processing and sends the corresponding control command to control the touch screen module to display picture information. At the same time, it controls the buzzer module to broadcast voice information. When the main control module does not receive a signal for a period of time, the main control module sends a sleep command to the sub-control module. The sub-control module sends a command to force the main control module to enter a low-power state, and the entire circuit enters a sleep state.

[0270] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0271] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electronic password lock display control circuit with a WIFI touch screen, characterized in that: It includes a power conversion module, a main control module, a sub-control module, a wireless module, a buzzer module, a touch screen module and a storage module; the power conversion module is connected with the main control module, the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module; the main control module is connected with the sub-control module, the wireless module, the buzzer module, the touch screen module and the storage module; The power conversion module includes a DC-DC conversion control circuit, the main control module includes an IT9866 chip circuit, a reset circuit, a working mode selection circuit and a communication interface circuit, the auxiliary control module includes a TM52 control circuit, the wireless module includes a WIFI circuit, the buzzer module includes a buzzer circuit, the touch screen module includes a TFT interface circuit and a TFT backlight driving circuit, and the storage module includes a FLASH circuit; The reset circuit, the working mode selection circuit, the communication interface circuit, the TM52 control circuit, the WIFI circuit, the buzzer circuit, the TFT interface circuit, the TFT backlight drive circuit, the FLASH circuit and the IT9866 chip circuit are all electrically connected to the DC-DC conversion control circuit; The reset circuit, working mode selection circuit, communication interface circuit, TM52 control circuit, WIFI circuit, buzzer circuit, TFT interface circuit, TFT backlight drive circuit, and FLASH circuit are all electrically connected to the IT9866 chip circuit; The communication interface circuit is electrically connected to the TM52 control circuit; The TFT backlight driving circuit is electrically connected to the TFT interface circuit.

2. The electronic password lock display control circuit with a WIFI touch screen according to claim 1, characterized in that: The power conversion module includes a DC-DC conversion control circuit; The DC-DC conversion control circuit includes a chip U4, an inductor L1, an inductor L3, an inductor L5, a capacitor C50, a capacitor C59, a capacitor C51, a capacitor C53, a capacitor C74, a capacitor C77, a capacitor C75, a capacitor C52, a capacitor C70, a capacitor C76, a capacitor C71, a capacitor C12, a capacitor C69, a capacitor C72, a capacitor C73, a capacitor C60, a capacitor C63, a capacitor C67, a capacitor C8, a capacitor C68, a capacitor C90, a capacitor C91, a capacitor C92, a capacitor C93, a capacitor C94, a capacitor C95, a capacitor C96, a capacitor C97, a capacitor C98, a capacitor C99, a capacitor C91, a capacitor C99, a capacitor C90, a capacitor C91, a capacitor C92, a capacitor C93, a capacitor C94, Resistor R76, resistor R12, resistor R35, resistor R34, resistor R8, resistor R77, resistor R78, resistor R74 and resistor R75, the chip U4 includes pin 10, pin 7, pin 19, pin 16, pin 9, pin 8, pin 18, pin 21, pin 17, pin 15, pin 13, pin 12, pin 5, pin 4, pin 1, pin 11, pin 14, pin 6, pin 3, pin 20 and pin 2; Pin 10, pin 7, pin 19, pin 16, a first end of capacitor C69, a first end of capacitor C72, a first end of capacitor C73, a first end of capacitor C60 and a first end of capacitor C63 in the chip U4 are all electrically connected to the VDD5V terminal; Pin 9 in the chip U4 and the first end of the capacitor C67 are both electrically connected to the first end of the resistor R76; The pin 8 in the chip U4 and the first end of the capacitor C8 are electrically connected to the first end of the resistor R12; The pin 18 in the chip U4 and the first end of the capacitor C68 are electrically connected to the first end of the resistor R35; The second end of the capacitor C69, the second end of the capacitor C72, the second end of the capacitor C73, the second end of the capacitor C60, the second end of the capacitor C67, the second end of the capacitor C8 and the second end of the capacitor C68 are all electrically connected to the ground line; The second end of the resistor R76, the second end of the resistor R12 and the second end of the resistor R35 are all electrically connected to the VDD5V terminal; Pin 21, pin 17, pin 15, pin 13, pin 12, pin 5, pin 4 and pin 1 in the chip U4 are all electrically connected to the ground wire; The pin 11 in the chip U4 is electrically connected to the first end of the inductor L1; The second end of the inductor L1, the first end of the resistor R74, the first end of the capacitor C70, the first end of the capacitor C76, the first end of the capacitor C71 and the first end of the capacitor C12 are all electrically connected to the VDD3V3 terminal; The second end of the resistor R74, the second end of the capacitor C70 and the pin 14 in the chip U4 are all electrically connected to the first end of the resistor R75; The second end of the resistor R75, the second end of the capacitor C76, the second end of the capacitor C71 and the second end of the capacitor C12 are all electrically connected to the ground line; Pin 6 in the chip U4 is electrically connected to the first end of the inductor L3; The second end of the inductor L3, the first end of the resistor R77, the first end of the capacitor C74, the first end of the capacitor C77, the first end of the capacitor C75 and the first end of the capacitor C52 are all electrically connected to the VDD1V8 terminal; The second end of the resistor R77, the second end of the capacitor C74 and the pin 3 in the chip U4 are all electrically connected to the first end of the resistor R78; The second end of the resistor R78, the second end of the capacitor C77, the second end of the capacitor C75 and the second end of the capacitor C52 are all electrically connected to the ground line; The pin 20 in the chip U4 is electrically connected to the first end of the inductor L5; The second end of the inductor L5, the first end of the resistor R34, the first end of the capacitor C50, the first end of the capacitor C59, the first end of the capacitor C51 and the first end of the capacitor C53 are all electrically connected to the VDD1V1 terminal; The second end of the resistor R34, the second end of the capacitor C50 and the pin 2 in the chip U4 are all electrically connected to the first end of the resistor R8; The second end of the resistor R8 , the second end of the capacitor C59 , the second end of the capacitor C51 , and the second end of the capacitor C53 are all electrically connected to the ground line.

3. The electronic password lock display control circuit with WIFI touch screen according to claim 2 is characterized in that: The main control module includes an IT9866 chip circuit, a reset circuit, a working mode selection circuit and a communication interface circuit; The IT9866 chip circuit includes a chip U2, a resistor R5, a resistor R6, a resistor R7, a diode VD11 and a capacitor C9. The chip U2 includes pin 11, pin 12, pin 129, pin 42, pin 43, pin 65, pin 66, pin 18, pin 19, pin 20, pin 21, pin 22, pin 24, pin 25, pin 28, pin 30, pin 31, pin 33, pin 34, pin 36, pin 37, pin 38, pin 39, pin 40, pin 53, pin 54, pin 55, pin 56, pin 57, pin 60, pin 61, pin 62, pin 63, pin 64, pin 70, pin 71, pin 72, pin 74, Pin 75, Pin 76, Pin 77, Pin 78, Pin 79, Pin 80, Pin 81, Pin 82, Pin 83, Pin 84, Pin 85, Pin 86, Pin 88, Pin 89, Pin 90, Pin 91, Pin 93, Pin 94, Pin 98, Pin 99, Pin 100, Pin 101, Pin 104, Pin 125, Pin 6, Pin 103, Pin 87, Pin 69, Pin 58, Pin 32, Pin 23, Pin 49, Pin 44, Pin 45, Pin 46, Pin 47, Pin 48, Pin 50, Pin 9, Pin 117, Pin 116, Pin 115, Pin 102, Pin 97, Pin 73, Pin 52, Pin 51 and Pin 10; The pin 11 in the chip U2 is electrically connected to the reset circuit; Pin 12, pin 129 and the first end of resistor R5 in the chip U2 are all electrically connected to the ground line; The pin 42 in the chip U2 is electrically connected to the second end of the resistor R5; The pin 43 in the chip U2 is electrically connected to the VDD1V8 terminal through the resistor R6; The pin 65 in the chip U2 is electrically connected to the first end of the resistor R7 and the first end of the diode; The pin 66 in the chip U2, the second end of the resistor R7 and the second end of the diode are all electrically connected to the ground line; Pins 18, 19, 20, 21, 22 and 24 of the chip U2 are electrically connected to the FLASH circuit; Pins 25, 28, 30, 31, 33 and 34 in the chip U2 are electrically connected to the WIFI circuit; Pins 36, 38 and 39 in the chip U2 are electrically connected to the auxiliary control circuit; Pins 38 and 39 in the chip U2 are electrically connected to the communication interface circuit; Pins 37 and 40 in the chip U2 are electrically connected to the buzzer circuit; Pin 53, pin 54, pin 55, pin 56, pin 57, pin 60, pin 61, pin 62, pin 63, pin 64, pin 70, pin 71, pin 72, pin 74, pin 75, pin 76, pin 77, pin 78, pin 79, pin 80, pin 81, pin 82, pin 83, pin 84, pin 85, pin 86, pin 88, pin 89, pin 90, pin 91, pin 93 and pin 94 in the chip U2 are electrically connected to the TFT interface circuit; Pins 98, 99, 100 and 101 in the chip U2 are electrically connected to the working mode selection circuit; The pin 104 in the chip U2 is electrically connected to the ground wire through the capacitor C9; The pin 125 in the chip U2 is electrically connected to the ground wire; Pin 6, pin 103, pin 87, pin 69, pin 58, pin 32 and pin 23 of the chip U2 are all electrically connected to the VDD1V8 terminal; Pins 49, 44, 45, 46, 47 and 48 of the chip U2 are all electrically connected to the VDD3V3 terminal; Pin 50, pin 9, pin 117, pin 116, pin 115, pin 102, pin 97, pin 73, pin 52, pin 51 and pin 10 of the chip U2 are all electrically connected to the VDD1V1 terminal; The reset circuit includes a resistor R1, a resistor R4, a capacitor C6, a capacitor C7, a diode VD5 and a chip U1, and the chip U1 includes a pin 1, a pin 2 and a pin 3; The first end of the resistor R1 in the reset circuit, the pin 3 of the chip U1 and the first end of the capacitor C7 are all electrically connected to the VDD3V3 terminal; The second end of the capacitor C7 in the reset circuit is electrically connected to the ground line; The second end of the resistor R1 in the reset circuit, the pin 1 in the chip U1, the pin 2 in the chip U1 and the first end of the resistor R4 are all electrically connected to the ground line; The second end of the resistor R4, the first end of the capacitor C6 and the first end of the diode VD5 in the reset circuit are all electrically connected to the pin 11 in the chip U2; The second end of the capacitor C6 in the reset circuit is electrically connected to the ground line; The second end of the diode VD5 in the reset circuit is electrically connected to the ground line; The working mode selection circuit includes a resistor R2, a resistor R11, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, and a socket J3, wherein the socket J3 includes a pin 1 and a pin 2; The first end of the resistor R11, the first end of the resistor R15 and the first end of the resistor R16 in the working mode selection circuit are all electrically connected to the VDD3V3 terminal; The second end of the resistor R11 in the working mode selection circuit is electrically connected to the first end of the resistor R2; The second end of the resistor R2 and the first end of the resistor R13 in the working mode selection circuit are both electrically connected to the pin 100 in the chip U2; The second end of the resistor R15 in the working mode selection circuit is electrically connected to the pin 1 in the socket J3; Pin 2 of the socket J3 in the working mode selection circuit and the first end of the resistor R14 are both electrically connected to pin 101 in the chip U2; The second end of the resistor R16 in the working mode selection circuit is electrically connected to the pin 98 in the chip U2; The second end of the resistor R13, the second end of the resistor R14 and the first end of the resistor R17 in the working mode selection circuit are all electrically connected to the ground line; The second end of the resistor R17 in the working mode selection circuit is electrically connected to the pin 99 in the chip U2; The communication interface circuit includes a connector CON2, a diode D4, a diode D1, a capacitor C10, a capacitor C11, a capacitor C58, a capacitor C61, a resistor R41, a resistor R42, a resistor R43, a resistor R44, a resistor R46, a resistor R48, a resistor R79, a resistor R80, a resistor R81, a resistor R106, a transistor Q3 and a transistor Q4, the connector CON2 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5 and a pin 6, and the transistor Q3 includes a pin 1, a pin 2 and a pin 3; Pin 1, pin 5 and pin 6 of the connector CON2 in the communication interface circuit are all electrically connected to the ground wire; Pin 2 of connector CON2 in the communication interface circuit, a first end of diode D4, a first end of diode D1, a first end of capacitor C10 and a first end of capacitor C11 are all electrically connected to the VDD5V terminal; The second end of the diode D4, the second end of the diode D1, the second end of the capacitor C10 and the second end of the capacitor C11 in the communication interface circuit are all electrically connected to the ground line; Pin 3 of the connector CON2 in the communication interface circuit is electrically connected to the first end of the capacitor C58 and the first end of the resistor R41; The second end of the capacitor C58 in the communication interface circuit is electrically connected to the ground line; The second end of the resistor R41 in the communication interface circuit is electrically connected to the pin 2 of the transistor Q3; Pin 1 of the transistor Q3 in the communication interface circuit is electrically connected to the first end of the resistor R43; Pin 3 of the transistor Q3 in the communication interface circuit is electrically connected to the first end of the resistor R44, the first end of the resistor R80 and the first end of the resistor R48; The second end of the resistor R80 in the communication interface circuit is electrically connected to the TM52 control circuit; The second end of the resistor R48 in the communication interface circuit is electrically connected to the pin 39 in the chip U2; Pin 4 of the connector CON2 in the communication interface circuit is electrically connected to the first end of the capacitor C61 and the first end of the resistor R42; The second end of the capacitor C61 in the communication interface circuit is electrically connected to the ground line; The second end of the resistor R42 in the communication interface circuit is electrically connected to the first end of the transistor Q4 and the first end of the resistor R46; The second end of the resistor R46 in the communication interface circuit is electrically connected to the VDD3V3 terminal; The second end of the transistor Q4 in the communication interface circuit is electrically connected to the first end of the resistor R79 and the first end of the resistor R81; The second end of the resistor R79 in the communication interface circuit is electrically connected to the pin 38 in the chip U2; The second end of the resistor R81 in the communication interface circuit is electrically connected to the TM52 control circuit; The third end of the transistor Q4 in the communication interface circuit is electrically connected to the first end of the resistor R106; The second end of the resistor R43 , the second end of the resistor R106 , and the second end of the resistor R44 in the communication interface circuit are all electrically connected to the VDD3V3 terminal.

4. The electronic password lock display control circuit with WIFI touch screen according to claim 3 is characterized in that: The auxiliary control module includes a TM52 control circuit; The TM52 control circuit includes a chip U7, a capacitor C65, a capacitor C66, a resistor R82, a resistor R83, a resistor R86 and a connector CON6, the chip U7 includes pins 2, 3, 7, 9, 11, 12, 14, 15 and 20, and the connector CON6 includes pins 1, 2, 3 and 4; Pin 2 in the chip U7 is electrically connected to pin 2 in the connector CON6; Pin 3 in the chip U7 is electrically connected to pin 3 in the connector CON6; Pin 7 of the chip U7, pin 4 of the connector CON6, a first end of the capacitor C65, and a first end of the capacitor C66 are all electrically connected to the ground line; Pin 9 of the chip U7, pin 1 of the connector CON6, the second end of the capacitor C65 and the second end of the capacitor C66 are all electrically connected to the VDD3V3 terminal; Pin 11 in the chip U7 is electrically connected to the communication interface circuit; Pin 12 in the chip U7 is electrically connected to the communication interface circuit; Pin 14 in the chip U7 is electrically connected to pin 38 in the chip U2 via resistor R83; Pin 15 in the chip U7 is electrically connected to pin 39 in the chip U2 via resistor R82; The pin 20 in the chip U7 is electrically connected to the pin 36 in the chip U2 through the resistor R86.

5. The electronic password lock display control circuit with WIFI touch screen according to claim 3 is characterized in that: The wireless module includes a WIFI circuit; The WIFI circuit includes a chip U8, a socket J2, a capacitor C79, a capacitor C84, a capacitor C85, a resistor R22, a resistor R108, a resistor R111, a resistor R112, a resistor R113, a resistor R114, a resistor R115, a resistor R116, a resistor R117, a resistor R118, a resistor R119, a resistor R120, a resistor R121 and a resistor R122, and the chip U8 includes pins 1, 2, 3, and 4. Pin 8, pin 16, pin 17, pin 18, pin 19, pin 20, pin 21, pin 22, pin 27, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, pin 48, pin 49, pin 50, pin 51, pin 52, pin 53, pin 54 and pin 55, the socket J2 includes pin 1, pin 2, pin 3 and pin 4; Pin 1, pin 2, pin 27, pin 38, pin 39, pin 40, pin 41, pin 42, pin 43, pin 44, pin 45, pin 46, pin 47, pin 48, pin 49, pin 50, pin 51, pin 52, pin 53, pin 54 and pin 55 of the chip U8 are all electrically connected to the ground wire; Pin 3 in the chip U8, the first end of the capacitor C84, and the second end of the capacitor C79 are all electrically connected to the VDD3V3 terminal; The second end of the capacitor C84 and the second end of the capacitor C79 are both electrically connected to the ground line; Pin 8 in the chip U8 is electrically connected to the first end of the resistor R22; The second end of the resistor R22 is electrically connected to the first end of the resistor R108 and the first end of the capacitor C85; The second end of the resistor R108 is electrically connected to the VDD3V3 terminal; The second end of the capacitor C85 is electrically connected to the ground line; The pin 16 in the chip U8 is electrically connected to the first end of the resistor R111 and the first end of the resistor R117; The pin 17 in the chip U8 is electrically connected to the first end of the resistor R115 and the first end of the resistor R121; The pin 18 in the chip U8 is electrically connected to the first end of the resistor R116 and the first end of the resistor R122; The pin 19 in the chip U8 is electrically connected to the first end of the resistor R112 and the first end of the resistor R118; The pin 20 in the chip U8 is electrically connected to the first end of the resistor R113, the first end of the resistor R119 and the pin 4 in the socket J2; The pin 22 in the chip U8 is electrically connected to the first end of the resistor R114 and the first end of the resistor R120; The second end of the resistor R117 is electrically connected to the ground line; The second end of the resistor R118, the second end of the resistor R119, the second end of the resistor R120, the second end of the resistor R121 and the second end of the resistor R122 are all electrically connected to the VDD3V3 terminal; The second end of the resistor R111 is electrically connected to the pin 25 in the chip U2; The second end of the resistor R112 is electrically connected to the pin 34 in the chip U2; The second end of the resistor R113 is electrically connected to the pin 28 in the chip U2; The second end of the resistor R114 is electrically connected to the pin 33 in the chip U2; The second end of the resistor R115 is electrically connected to the pin 30 in the chip U2; The second end of the resistor R116 is electrically connected to the pin 31 in the chip U2; Pin 21 of the chip U8 is electrically connected to pin 1 of the socket J2 Pins 2 and 3 of the socket J2 are both electrically connected to the ground wire.

6. The electronic password lock display control circuit with WIFI touch screen according to claim 3, characterized in that: The buzzer module includes a buzzer circuit; The buzzer circuit includes a connector CON5, a transistor Q2, a transistor Q5, a transistor Q10, a resistor R38, a resistor R39, a resistor R64, a resistor R62, a resistor R57, a resistor R56, a resistor R58, a resistor R59, a resistor R60 and a capacitor C48, the connector CON5 includes a pin 1, a pin 2, a pin 3, a pin 4 and a pin 5, the transistor Q2 includes a pin 1, a pin 2 and a pin 3, the transistor Q5 includes a pin 1, a pin 2 and a pin 3, and the transistor Q10 includes a pin 1, a pin 2 and a pin 3; Pin 1 of the connector CON5 is electrically connected to the first end of the resistor R57, the first end of the resistor R56 and pin 3 of the transistor Q2; Pin 2 of the connector CON5 is electrically connected to the second end of the resistor R56 and the first end of the resistor R58; The second end of the resistor R57 is electrically connected to the first end of the capacitor C48; The second end of the capacitor C48, the first end of the resistor R62 and the pin 2 of the transistor Q10 are all electrically connected to the ground line; The second end of the resistor R62 and the pin 1 of the transistor Q10 are both electrically connected to the first end of the resistor R64; The second end of the resistor R64 is electrically connected to the pin 40 in the chip U2; Pin 3 of the transistor Q10 is electrically connected to the first end of the resistor R39 and pin 1 of the transistor Q2 via the resistor R38; The second end of the resistor R39 and the pin 2 of the transistor Q2 are both electrically connected to VDD12V; The second end of the resistor R58 is electrically connected to the pin 3 of the transistor Q5; Pin 1 of the transistor Q5 is electrically connected to a first end of the resistor R59 and a first end of the resistor R60; Pin 2 of the transistor Q5 and the second end of the resistor R59 are both electrically connected to the ground wire; The second end of the resistor R60 is electrically connected to the pin 37 in the chip U2; Pin 3 of the connector CON5 is electrically connected to VDD12V; Pins 4 and 5 of the connector CON5 are electrically connected to the ground line.

7. The electronic password lock display control circuit with WIFI touch screen according to claim 3, characterized in that: The touch screen module includes a TFT interface circuit and a TFT backlight driving circuit; The TFT interface circuit includes a connector CON3, a capacitor C2, a capacitor C3, a capacitor C64, a capacitor C65, a capacitor C87, a capacitor C13, a capacitor C4, a capacitor C49, a capacitor C54, a capacitor C88, a capacitor C89, a capacitor C90, a capacitor C91, a capacitor C92, a capacitor C55, a diode VD6, a diode VD7, a diode VD8, a diode VD9, a resistor R55, a resistor R72, a resistor R87, a resistor R88, a resistor R89, a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R45, a resistor R47, a resistor R49, a resistor R50, a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R9, a resistor R33, a resistor R36, Resistor R37, resistor R84, resistor R85, resistor R90, resistor R69, resistor R40, resistor R61, resistor R70, resistor R71, resistor R66 and resistor R68, the connector CON3 includes pin 1, pin 2, pin 3, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 18, pin 19, pin 20, pin 21, pin 22, pin 23, pin 26, pin 27, pin 28, pin 29, pin 30, pin 31, pin 34, pin 35, pin 36, pin 37, pin 38, pin 40, pin 41, pin 42, pin 44, pin 45, pin 46, pin 47, pin 48, pin 49, pin 50, pin 51, pin 52 and pin 53; Pin 1 of the connector CON3, the first end of the capacitor C2 and the first end of the capacitor C3 are all electrically connected to the ground line; Pin 2, pin 3, the second end of capacitor C2 and the second end of capacitor C3 in the connector CON3 are all electrically connected to the VDD3V3 terminal; Pin 5 of the connector CON3 is electrically connected to pin 63 of the chip U2 through resistor R55; Pin 5 of the connector CON3 is electrically connected to the ground wire through capacitor C88; Pin 6 of the connector CON3 is electrically connected to pin 64 of the chip U2 through resistor R72; Pin 6 of the connector CON3 is electrically connected to the ground wire through capacitor C89; Pin 7 of the connector CON3 is electrically connected to pin 61 of the chip U2 through resistor R87; Pin 7 of the connector CON3 is electrically connected to the ground wire through capacitor C90; Pin 8 of the connector CON3 is electrically connected to pin 62 of the chip U2 through resistor R88; Pin 8 of the connector CON3 is electrically connected to the ground wire through capacitor C91; Pin 9 of the connector CON3 is electrically connected to pin 60 of the chip U2 through resistor R89; Pin 9 of the connector CON3 is electrically connected to the ground wire through capacitor C92; Pin 9 of the connector CON3 is electrically connected to a first end of the resistor R90 and a first end of the capacitor C87; The second end of the capacitor C87 is electrically connected to the ground line; The second end of the resistor R90, the first end of the resistor R85 and the first end of the resistor R84 are all electrically connected to the VDD3V3 terminal; The second end of the resistor R85 is electrically connected to the pin 37 of the connector CON3; The second end of the resistor R84 is electrically connected to the pin 38 of the connector CON3; Pin 10 in the connector CON3 is electrically connected to pin 94 in the chip U2 through resistor R37; Pin 11 of the connector CON3 is electrically connected to pin 93 of the chip U2 through resistor R36; Pin 12 of the connector CON3 is electrically connected to pin 91 of the chip U2 through resistor R33; Pin 13 of the connector CON3 is electrically connected to pin 90 of the chip U2 through resistor R32; Pin 14 of the connector CON3 is electrically connected to pin 89 of the chip U2 through resistor R31; Pin 15 of the connector CON3 is electrically connected to pin 88 of the chip U2 through resistor R30; Pin 18 in the connector CON3 is electrically connected to pin 86 in the chip U2 through resistor R29; Pin 19 in the connector CON3 is electrically connected to pin 85 in the chip U2 through resistor R54; Pin 20 in the connector CON3 is electrically connected to pin 84 in the chip U2 through resistor R53; The pin 21 in the connector CON3 is electrically connected to the pin 83 in the chip U2 through the resistor R52; Pin 22 of the connector CON3 is electrically connected to pin 82 of the chip U2 through resistor R51; Pin 23 of the connector CON3 is electrically connected to pin 81 of the chip U2 through resistor R50; Pin 26 of the connector CON3 is electrically connected to pin 80 of the chip U2 through resistor R49; Pin 27 of the connector CON3 is electrically connected to pin 79 of the chip U2 through resistor R47; Pin 28 in the connector CON3 is electrically connected to pin 78 in the chip U2 through resistor R45; Pin 29 in the connector CON3 is electrically connected to pin 77 in the chip U2 through resistor R28; Pin 30 in the connector CON3 is electrically connected to pin 76 in the chip U2 through resistor R27; The pin 31 in the connector CON3 is electrically connected to the pin 75 in the chip U2 through the resistor R26; The pin 34 in the connector CON3 is electrically connected to the ground wire; Pin 35 in the connector CON3 is electrically connected to pin 74 in the chip U2 through resistor R23; Pin 35 of the connector CON3 is electrically connected to the ground wire through capacitor C54; Pin 36 of the connector CON3 is electrically connected to pin 70 of the chip U2 through resistor R9; The pin 36 of the connector CON3 is electrically connected to the ground wire through the capacitor C13; Pin 37 of the connector CON3 is electrically connected to pin 71 of the chip U2 through resistor R24; The pin 37 of the connector CON3 is electrically connected to the ground wire through the capacitor C4; Pin 38 in the connector CON3 is electrically connected to pin 72 in the chip U2 through resistor R25; Pin 38 of the connector CON3 is electrically connected to the ground wire through capacitor C49; The pin 40 in the connector CON3 is electrically connected to the ground wire; Pins 41 and 42 of the connector CON3 are electrically connected to the TFT backlight driving circuit; The pin 44 of the connector CON3, the first end of the capacitor C64 and the first end of the capacitor C62 are all electrically connected to the ground line; The pin 45 of the connector CON3, the second end of the capacitor C64 and the second end of the capacitor C62 are all electrically connected to the VDD3V3 terminal; The pin 46 in the connector CON3 is electrically connected to the ground wire; The pin 47 of the connector CON3 is electrically connected to the first end of the diode VD6, the first end of the resistor R69, the first end of the capacitor C55 and the first end of the resistor R40; The second end of the diode VD6 is electrically connected to the ground line; The second end of the resistor R69 is electrically connected to the VDD3V3 terminal; The second end of the capacitor C55 is electrically connected to the ground line; The second end of the resistor R40 is electrically connected to the pin 57 in the chip U2; The pin 48 of the connector CON3 is electrically connected to the first end of the diode VD7 and the first end of the resistor R61; The second end of the diode VD7 is electrically connected to the ground line; The second end of the resistor R61 is electrically connected to the pin 56 in the chip U2; The pin 49 of the connector CON3 is electrically connected to the first end of the diode VD8 and the first end of the resistor R68; The second end of the diode VD8 is electrically connected to the ground line; The second end of the resistor R68 and the first end of the resistor R71 are both electrically connected to the pin 54 in the chip U2; The second end of the resistor R71 is electrically connected to the VDD3V3 terminal; The pin 50 in the connector CON3 is electrically connected to the first end of the diode VD9 and the first end of the resistor R66; The second end of the diode VD9 is electrically connected to the ground line; The second end of the resistor R66 and the first end of the resistor R70 are both electrically connected to the pin 55 in the chip U2; The second end of the resistor R70 is electrically connected to the VDD3V3 terminal; Pins 51, 52 and 53 of the connector CON3 are all electrically connected to the ground wire; The TFT backlight driving circuit includes a chip U6, an inductor L2, a diode D3, a capacitor C80, a capacitor C81, a capacitor C82, a capacitor C83, a capacitor C78, ​​a resistor R92 and a resistor R73, the chip U6 includes a pin 1, a pin 3, a pin 4, a pin 5, a pin 6 and a pin 7, and the inductor L2 includes a pin 1 and a pin 2; Pin 1 in the chip U6 is electrically connected to the first end of the resistor R92 and pin 41 in the connector CON3; The second end of the resistor R92 is electrically connected to the ground line; Pins 3 and 7 of the chip U6 are both electrically connected to the ground wire; Pin 4 of the chip U6 is electrically connected to pin 2 of the inductor L2 and the first end of the diode D3; Pin 1 of the inductor L2, pin 6 of the chip U6, the first end of the capacitor C81 and the first end of the capacitor C80 are all electrically connected to the VDD5V terminal; The second end of the capacitor C81 and the second end of the capacitor C80 are both electrically connected to the ground line; The second end of the diode D3, the first end of the capacitor C82, the first end of the capacitor C83 and the first end of the capacitor C78 are all electrically connected to the pin 42 of the connector CON3; The second end of the capacitor C82, the second end of the capacitor C83 and the second end of the capacitor C78 are all electrically connected to the ground line; The pin 5 in the chip U6 is electrically connected to the pin 53 in the chip U2 through the resistor R73.

8. The electronic password lock display control circuit with WIFI touch screen according to claim 3, characterized in that: The storage module includes a FLASH circuit; The FLASH circuit includes a chip U3, a chip U5, a capacitor C56, a resistor R19, a resistor R20, a resistor R21, a resistor R100, a resistor R101, a resistor R102, a resistor R103, a resistor R104 and a resistor R105. The chip U3 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5, a pin 6, a pin 7 and a pin 8. The chip U5 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5, a pin 6, a pin 7, a pin 8 and a pin 9. Pin 1 in the chip U3 and pin 1 in the chip U5 are both electrically connected to the VDD3V3 terminal through a resistor R19; Pin 1 in the chip U3 and pin 1 in the chip U5 are both electrically connected to pin 18 in the chip U2 via resistor R100; Pin 2 in the chip U3 and pin 2 in the chip U5 are both electrically connected to pin 20 in the chip U2 via resistor R102; Pin 3 in the chip U3 and pin 3 in the chip U5 are both electrically connected to the VDD3V3 terminal through resistor R20; Pin 3 in the chip U3 and pin 3 in the chip U5 are both electrically connected to pin 21 in the chip U2 via resistor R103; Pin 4 in the chip U3, pin 4 in the chip U5 and pin 9 in the chip U5 are all electrically connected to the ground wire; Pin 5 in the chip U3 and pin 5 in the chip U5 are both electrically connected to pin 19 in the chip U2 via resistor R101; Pin 6 in the chip U3 and pin 6 in the chip U5 are both electrically connected to pin 24 in the chip U2 via resistor R105; Pin 7 in the chip U3 and pin 7 in the chip U5 are both electrically connected to the VDD3V3 terminal through a resistor R21; Pin 7 in the chip U3 and pin 7 in the chip U5 are both electrically connected to pin 22 in the chip U2 via resistor R104; Pin 8 in the chip U3, pin 8 in the chip U5 and the first end of the capacitor C56 are all electrically connected to the VDD3V3 terminal; The second end of the capacitor C56 is electrically connected to the ground line.

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