Dynamic variable elevator key display system

Abstract

The utility model relates to the technical field of elevator keys, and provides a dynamic variable elevator key display system, which comprises a key setting communication main control board and a plurality of elevator keys, the key setting communication main control board is in signal connection with the plurality of elevator keys, the key setting communication main control board is used for receiving and processing external signals, and the elevator keys are connected with the key setting communication main control board. The elevator keys are used for outputting floor selection signals and receiving image data; the key setting communication main control board comprises a main control circuit and a picture storage circuit; the main control circuit is electrically connected with the picture storage circuit and is used for outputting control signals to other circuits; and the picture storage circuit is electrically connected with the main control circuit and is used for storing and outputting image data. Image data such as advertisement pictures, 24-solar-term pictures, traditional holiday pictures, important holiday pictures and user personalized pictures are stored and output to a plurality of elevator keys through the picture storage circuit, meanwhile, the advertisement pictures are implanted into a commercial, and the requirements of commercial elevator users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator buttons, in particular to a dynamic variable elevator button display system. Background Technique

[0002] Elevator buttons are widely used in traditional elevator equipment and are a standard function of elevators. Since elevator safety is related to life and it is a special industry. If it is necessary to collect elevator usage information, it is required that the original design cannot be changed, and it is also necessary to ensure that even if the acquisition circuit malfunctions, the normal operation of the elevator cannot be affected. With the continuous improvement of people's material living standards and the visual fatigue of "liking the new and hating the old" for products. Traditional buttons can no longer meet the rapidly changing personalized needs of users. Once traditional buttons are installed, their appearance is presented to users in a fixed manner and cannot be changed until they are replaced.

[0003] A Chinese patent with the publication number CN218841388U discloses an elevator button signal acquisition circuit, which acquires the button press signal through the signal acquisition circuit, has a stable structure and reduces costs. However, the development of elevator buttons in this patent is limited, the functions are not diverse enough, and it cannot meet the personalized needs of users. Content of the Utility Model

[0004] In view of this, the utility model provides a dynamic variable elevator button display system. Image data such as advertising pictures, pictures of the twenty-four solar terms, pictures of traditional holidays, pictures of important festivals, and user personalized pictures are stored and output to multiple elevator buttons through a picture storage circuit. At the same time, through a 485 communication circuit and a TYPE-C program update circuit, the picture data stored in the picture storage circuit can be replaced in real time by using a mobile phone APP. Different advertising information, solar term information, festival information, user personalized information, etc. are displayed through multiple elevator buttons. On the basis of meeting the daily needs of users to select floors, the personalized needs of users are met, and the problem that the functions of current elevator buttons are not diverse enough is solved.

[0005] The technical solution of the utility model is realized as follows: A dynamic variable elevator button display system, the system includes a button setting communication main control board and multiple elevator buttons. The button setting communication main control board is signal-connected to the multiple elevator buttons. The button setting communication main control board is used to receive external signals and process them. The elevator buttons are used to output floor selection signals and receive image data;

[0006] The button setting communication main control board includes a main control circuit and a picture storage circuit;

[0007] The main control circuit is electrically connected to the picture storage circuit and is used to output control signals to other circuits;

[0008] The described picture storage circuit is electrically connected to the main control circuit and is used for storing and outputting image data.

[0009] Based on the above technical solutions, preferably, the elevator button includes a convex face cover, an LCD & OLED display touch screen, an electronic main board, and an interface opening rear cover;

[0010] The LCD & OLED display touch screen is arranged between the convex face cover and the electronic main board, and the electronic main board is arranged between the LCD & OLED display touch screen and the interface opening rear cover;

[0011] The shapes of the central hole of the convex face cover and the LCD & OLED display touch screen include: circular, rectangular, and long rectangular;

[0012] The image data output by the elevator button includes advertising pictures, pictures of the twenty-four solar terms, pictures of traditional holidays, pictures of important festivals, and user personalized pictures.

[0013] Based on the above technical solutions, preferably, the main control circuit includes a main control chip U1, a connector P2, a crystal oscillator X1, resistors R4, R13, and capacitors C2, C3, C4, C5, C7, C8, C9, C12, C17;

[0014] One end of capacitor C2 and one end of capacitor C3 are both connected to the VCC1V2 voltage, the other end of capacitor C2 and the other end of capacitor C3 are both grounded, one end of capacitor C4, one end of capacitor C5, one end of capacitor C7, and one end of capacitor C8 are all connected to the VCC3V3 voltage, the other end of capacitor C4, the other end of capacitor C5, the other end of capacitor C7, and the other end of capacitor C8 are all grounded, pin 1 of connector P2 is connected to the VCC3V3 voltage, pin 2 of connector P2 is grounded, pin 3 of connector P2 is electrically connected to pin 21 of the main control chip U1, pin 4 of connector P2 is electrically connected to pin 22 of the main control chip U1, pin 1 of crystal oscillator X1 is respectively connected to one end of capacitor C17, one end of resistor R13, and pin 13 of the main control chip U1, pin 3 of crystal oscillator X1 is respectively connected to the other end of resistor R13, one end of capacitor C12, and pin 12 of the main control chip U1, and the other end of capacitor C17 and the other end of capacitor C12 are both grounded.

[0015] Based on the above technical solutions, preferably, the picture storage circuit includes a flash memory chip U2 and a capacitor C11;

[0016] Pin 1 of the flash chip U2 is electrically connected to pin 36 of the main control chip U1, pin 2 of the flash chip U2 is electrically connected to pin 35 of the main control chip, pins 3, 7, and 8 of the flash chip U2 are all connected to the VCC3V3 voltage, pin 4 of the flash chip U2 is grounded, pin 5 of the flash chip U2 is electrically connected to pin 34 of the main control chip U1, pin 6 of the flash chip U2 is electrically connected to pin 37 of the main control chip U1, one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to the VCC3V3 voltage.

[0017] Based on the above technical solution, preferably, the key-setting communication main control board further includes a TYPE-C program update circuit, which is electrically connected to the main control circuit and is used for receiving configuration update data and outputting it to the main control circuit;

[0018] The TYPE-C program update circuit includes a USB chip U6, a diode D4, and a capacitor C30;

[0019] Pins A1, A12, B1, and B12 of the USB chip U6 are all grounded, pin A4 of the USB chip U6 is electrically connected to the negative electrode of the diode D4, the positive electrode of the diode D4 is connected to the 5V voltage, one end of the capacitor C30 is grounded, the other end of the capacitor C30 is connected to the VBUS voltage, pins A7 and B7 of the USB chip U6 are both electrically connected to pin 7 of the main control chip U1, and pins A6 and B6 of the USB chip U6 are both electrically connected to pin 8 of the main control chip U1.

[0020] Based on the above technical solution, preferably, the key-setting communication main control board further includes a 485 communication circuit, which is electrically connected to the main control circuit and is used for receiving RS485 signals;

[0021] The 485 communication circuit includes an RS485 differential transceiver chip U4, a connector P4, a diode D1, resistors R14, R15, R16, R17, R18, a triode Q2, capacitors C18, and C29;

[0022] Pin 1 of the RS485 differential transceiver chip U4 is electrically connected to pin 4 of the connector P2. Pin 2 and pin 3 of the RS485 differential transceiver chip U4 and one end of the resistor R15 are all electrically connected to the collector of the triode Q2. Pin 4 of the RS485 differential transceiver chip U4 is electrically connected to pin 3 of the connector P2. Pin 5 of the RS485 differential transceiver chip U4 is grounded. Pin 6 of the RS485 differential transceiver chip U4 is electrically connected to pin 2 of the connector P4, one end of the resistor R18, and one end of the resistor R16 respectively. Pin 7 of the RS485 differential transceiver chip U4 is electrically connected to pin 1 of the connector P4, the other end of the resistor R16, and one end of the resistor R14 respectively. Pin 8 of the RS485 differential transceiver chip U4 is connected to the VCC3V3 voltage. The other end of the resistor R15 is connected to the VCC3V3 voltage. The base of the triode Q2 is electrically connected to the positive pole of the diode D1, one end of the resistor R17, and one end of the capacitor C18 respectively. The negative pole of the diode D1 and the other end of the resistor R17 are both electrically connected to pin 3 of the connector P2. The emitter of the triode Q2 and the other end of the capacitor C18 are both grounded. The other end of the resistor R18 is connected to the VCC3V3 voltage. The other end of the resistor R14 is grounded. Pins 3 - 5 of the connector P4 are all grounded. One end of the capacitor C29 is grounded, and the other end of the capacitor C29 is connected to the VCC3V3 voltage.

[0023] Based on the above technical solutions, preferably, the button - set communication main control board further includes a Bluetooth wireless connection circuit, and the Bluetooth wireless connection circuit is electrically connected to the main control circuit for receiving Bluetooth signals;

[0024] The Bluetooth wireless connection circuit includes a Bluetooth chip U9;

[0025] Pin 2, pin 15, and pin 18 of the Bluetooth chip U9 are all grounded. Pin 3 of the Bluetooth chip U9 is connected to the VCC3V3 voltage. Pin 13 of the Bluetooth chip U9 is electrically connected to pin 3 of the connector P2. Pin 14 of the Bluetooth chip U9 is electrically connected to pin 4 of the connector P2.

[0026] Based on the above technical solutions, preferably, the button - set communication main control board further includes an elevator button interface circuit, and the elevator button interface circuit is electrically connected to the main control circuit for receiving floor selection signals and outputting image data;

[0027] The elevator button interface circuit includes optocouplers U5, U10, a connector P5, MOSFET transistors Q3, resistors R19, R20, R21, R22, R23, R24, R25, R26, R27, R28;

[0028] Pin 1 of the optocoupler U5 is electrically connected to one end of the resistor R20, and the other end of the resistor R20 is electrically connected to pin 1 of the connector P5. Pin 2 of the optocoupler U5 is electrically connected to one end of the resistor R21, and the other end of the resistor R21 is electrically connected to pin 2 of the connector P5. Pin 3 of the optocoupler U5 is electrically connected to one end of the resistor R19, one end of the resistor R22, and pin 38 of the main control chip U1 respectively. The other end of the resistor R22 is grounded. Pin 4 of the optocoupler U5 and the other end of the resistor R19 are both connected to the VCC3V3 voltage. Pin 1 of the optocoupler U10 is electrically connected to one end of the resistor R25, and the other end of the resistor R25 is electrically connected to one end of the resistor R24 and one end of the resistor R27 respectively. The other end of the resistor R24 is electrically connected to the source electrode of the MOSFET Q3. The drain electrode of the MOSFET Q3 is connected to the VCC3V3 voltage. The gate electrode of the MOSFET Q3 is electrically connected to one end of the resistor R23 and one end of the resistor R26 respectively. The other end of the resistor R23 is electrically connected to pin 39 of the main control chip U1. The other end of the resistor R26 is grounded. Pin 2 of the optocoupler U10 and the other end of the resistor R27 are both grounded. Pin 3 of the optocoupler U10 is electrically connected to one end of the resistor R28, and the other end of the resistor R28 is electrically connected to pin 4 of the connector P5. Pin 4 of the optocoupler U10 is electrically connected to pin 3 of the connector P5. Pins 7 and 8 of the connector P5 are both grounded.

[0029] Based on the above technical solution, preferably, the key-set communication main control board further includes a display screen interface circuit, and the display screen interface circuit is electrically connected to the main control circuit for connecting to a display screen;

[0030] The display screen interface circuit includes connectors P1, P3, a step-down voltage regulator chip U3, a MOSFET Q1, resistors R1, R2, R3, R5, R6, R7, R8, R9, R10, R11, R12, R34, capacitors C1, C10, C13, C14, C15, C16;

[0031] The connector P1 is electrically connected to one end of the resistor R1. The other end of the resistor R1 is electrically connected to the drain of the MOSFET Q1. The source of the MOSFET Q1 is grounded. The gate of the MOSFET Q1 is electrically connected to one end of the resistor R2 and one end of the resistor R3 respectively. The other end of the resistor R2 and one end of the resistor R34 are both electrically connected to the pin 11 of the main control chip U1. The other end of the resistor R3 and the other end of the resistor R34 are both grounded. One end of the capacitor C1 is connected to the VCC3V3 voltage, and the other end of the capacitor C1 is grounded. The pins 3, 5-13 of the connector P1 are all grounded. The pin 2 of the connector P1 is respectively electrically connected to one end of the capacitor C16, one end of the capacitor C15, and the pin 2 of the step-down voltage regulator chip U3. The pin 1 of the step-down voltage regulator chip U3, the other end of the capacitor C15, the other end of the capacitor C16, one end of the capacitor C13, and one end of the capacitor C15 are all grounded. The pin 3 of the step-down voltage regulator chip U3, the other end of the capacitor C13, and the other end of the capacitor C14 are all connected to the 5V voltage. The pin 4 of the connector P1 is connected to the VCC3V3 voltage. The pins 14-35 of the connector P1 are respectively electrically connected to the pins 23, 28, 25, 27, 19, 18, 6, 5, 20, 4, 3, 2, 1, 48, 47, 24, 42, 41, 44, 43, 33, 40 of the main control chip U1 in sequence. The pin 36 of the connector P1 is electrically connected to the pin 4 of the connector P3. The pin 37 of the connector P1 is electrically connected to the pin 3 of the connector P3. One end of the resistor R5, one end of the resistor R7, and one end of the resistor R9 are all connected to the VCC3V3 voltage. The other end of the resistor R5 is electrically connected to one end of the resistor R6. The other end of the resistor R7 is electrically connected to one end of the resistor R8. The other end of the resistor R9 is electrically connected to one end of the resistor R10. The other end of the resistor R6, the other end of the resistor R8, and the other end of the resistor R10 are all grounded. The pin 1 of the connector P3, one end of the resistor R11, and one end of the resistor R12 are all connected to the VCC3V3 voltage. The pin 2 of the connector P3 and the other end of the resistor R11 are both electrically connected to the pin 31 of the main control chip U1. The pin 3 of the connector P3 and the other end of the resistor R12 are both electrically connected to the pin 32 of the main control chip U1. The pin 4 of the connector P3 is electrically connected to the pin 26 of the main control chip U1. The pin 5 of the connector P3 is electrically connected to the pin 30 of the main control chip U1. The pin 6 of the connector P3 is grounded.

[0032] Based on the above technical solutions, preferably, the key-set communication main control board further includes a power input-output power supply circuit, which is electrically connected to the main control circuit and used to provide electrical energy;

[0033] The power input and output power supply circuit includes a power management chip U7, a step-down voltage regulator chip U8, a light-emitting diode D3, a diode D2, a transient suppression diode DZ1, resistors R29, R31, R32, R33, inductors L1, L2, capacitors C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, E1, and E2;

[0034] Pin 1 of the power management chip U7 is electrically connected to one end of the capacitor C19, pin 2 of the power management chip U7 is grounded, pin 3 of the power management chip U7 is electrically connected to one end of the resistor R30, one end of the resistor R32, and one end of the capacitor C22 respectively, pin 4 of the power management chip U7 is electrically connected to one end of the resistor R29 and one end of the resistor R31 respectively, pin 5 of the power management chip U7 is electrically connected to the other end of the resistor R29, pin 6 of the power management chip U7 is electrically connected to the other end of the capacitor C19 and one end of the inductor L2 respectively, the other end of the resistor R31 is grounded, the other end of the inductor L2 is electrically connected to the other end of the resistor R30, the other end of the capacitor C22, one end of the capacitor C20, one end of the capacitor C21, and the positive electrode of the capacitor E1 respectively, pin 6 of the power management chip U7 outputs a 5V voltage, the other ends of the capacitor C20, the capacitor C21, and the negative electrode of the capacitor E1 are all grounded, the other end of the resistor R32 is grounded, one end of the resistor R33 is connected to the VCC3V3 voltage, the other end of the resistor R33 is electrically connected to the positive electrode of the light-emitting diode D3, the negative electrode of the light-emitting diode D3 is grounded, the positive electrode of the capacitor E2, one end of the capacitor C23, and one end of the capacitor C24 are all connected to the 24V voltage, the negative electrode of the capacitor E2, the other end of the capacitor C23, and the other end of the capacitor C24 are all grounded, pin 1 of the step-down voltage regulator chip U8, one end of the capacitor C27, one end of the capacitor C28, one end of the capacitor C25, and one end of the capacitor C26 are all grounded, pin 3 of the step-down voltage regulator chip U8, the other end of the capacitor C27, and the other end of the capacitor C28 are all connected to the 5V voltage, pin 2 of the step-down voltage regulator chip U8 is electrically connected to pin 4 of the step-down voltage regulator chip U8, the other end of the capacitor C25, and the other end of the capacitor C26 respectively, pin 2 of the step-down voltage regulator chip U8 outputs the VCC3V3 voltage, pin 1 of the inductor L1 is grounded, pin 2 of the inductor L1 is connected to the 24V voltage, pin 3 of the inductor L2 is electrically connected to pin 6 of the connector P5, pin 4 of the inductor L1 is electrically connected to the negative electrode of the diode D2, the positive electrode of the diode D2 and pin 5 of the connector P5 are both electrically connected to one end of the transient suppression diode DZ1, and the other end of the transient suppression diode DZ1 is grounded.

[0035] A dynamic variable elevator button display system provided by the present utility model has the following beneficial effects compared with the prior art:

[0036] (1) The image data such as advertisement pictures, Twenty-Four Solar Terms pictures, traditional holiday pictures, important festival pictures, and user personalized pictures are stored and output to multiple elevator buttons through the picture storage circuit. At the same time, through the 485 communication circuit and the TYPE-C program update circuit, the picture data stored in the picture storage circuit can be replaced in real time using a mobile phone APP, which not only meets the daily needs of users to select floors but also satisfies the personalized needs of users for elevator buttons, and solves the problem that the functions of current elevator buttons are not diverse enough;

[0037] (2) Through the picture storage circuit, the storage and output of image data are realized, ensuring the reliable storage and high-speed transmission of image data, and enabling efficient storage and output of various types of required image data;

[0038] (3) Bluetooth wireless connection is realized through the Bluetooth wireless connection circuit. Users can use mobile devices such as mobile phones to interact with the elevator button system to realize real-time update and setting of image content, enhancing the flexibility and configurability of the system, and providing users with a more intelligent and convenient elevator use experience;

[0039] (4) Through the TYPE-C program update circuit, the firmware program in the main control circuit can be updated online. Users only need to connect external devices such as mobile phones or computers to complete the online upgrade of the program through this circuit, improving the maintainability and adaptability of the system, ensuring that the entire elevator button display system can be dynamically adjusted and optimized according to actual needs, and providing users with a more intelligent and personalized experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0041] Figure 1 It is the composition structure diagram of the button setting communication main control board of the present invention;

[0042] Figure 2 It is the wiring diagram of the main control circuit of the present invention;

[0043] Figure 3 It is the wiring diagram of the picture storage circuit of the present invention;

[0044] Figure 4 It is the wiring diagram of the TYPE-C program update circuit of the present invention;

[0045] Figure 5It is the wiring diagram of the 485 communication circuit of the present utility model;

[0046] Figure 6 It is the wiring diagram of the Bluetooth wireless connection circuit of the present utility model;

[0047] Figure 7 It is the wiring diagram of the elevator button interface circuit of the present utility model;

[0048] Figure 8 It is the wiring diagram of the display screen interface circuit of the present utility model;

[0049] Figure 9 It is the wiring diagram of the power input / output power supply circuit of the present utility model;

[0050] Figure 10 It is the structural explosion diagram of the elevator button of the present utility model;

[0051] Figure 11 It is the schematic diagram of the long strip rectangular elevator button of the present utility model. Specific embodiments

[0052] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0053] Please refer to Figures 1-10 , this embodiment provides a dynamic variable elevator button display system. The system includes a button setting communication main control board and a plurality of elevator buttons. The button setting communication main control board is signal-connected to the plurality of elevator buttons. The button setting communication main control board is used to receive external signals and process them. The elevator buttons are used to output floor selection signals and receive image data;

[0054] The button setting communication main control board includes a main control circuit 1 and a picture storage circuit 2;

[0055] The main control circuit 1 is electrically connected to the picture storage circuit 2 and is used to output control signals to other circuits;

[0056] The picture storage circuit 2 is electrically connected to the main control circuit 1 and is used to store and output image data.

[0057] As Figure 10 shown, the elevator button includes a convex face cover, an LCD&OLED display touch screen, an electronic main board, and an interface opening rear cover;

[0058] The LCD & OLED display touch screen is disposed between the convex surface cover and the electronic main board, and the electronic main board is disposed between the LCD & OLED display touch screen and the interface opening rear cover;

[0059] The shapes of the central hole of the convex surface cover and the LCD & OLED display touch screen include: circular, rectangular, and long rectangular;

[0060] The image data output by the elevator buttons includes advertisement pictures, pictures of the twenty-four solar terms, pictures of traditional festivals, pictures of important festivals, and user personalized pictures.

[0061] Specifically, in this embodiment, first, pictures with the meanings of the twenty-four solar terms and traditional festivals are used as the dynamically changing background, which changes with the calendar solar terms or festivals. While promoting the Chinese traditional festival culture, it gives people a visual aesthetic feeling and reminds people to pay attention to the changes in solar terms and adjust their work and rest time, clothing, and important festival matters. Secondly, floor numbers, letters of different fonts and sizes, and arrows of different shapes and sizes are built-in. Let users choose and set according to their own preferences. Users can download their favorite pictures as the background, and at the same time, they can also download their favorite numbers and letters as the floor display, or download their favorite graphics as the floor direction indication. Once the traditional buttons are installed, their appearance is presented to users in a fixed way and cannot be changed until they are replaced.

[0062] As Figure 11 shown, the long rectangular elevator buttons can implant advertisement pictures for commercial users to meet the requirements of commercial elevator users. The advertisement area is used to implant advertisement pictures for merchants, including logos, etc., and the floor display area is used to display the corresponding floors where the merchants are located.

[0063] The elevator buttons of this embodiment have the following beneficial effects: an innovative and unique structure that protrudes the LCD liquid crystal display touch screen or the OLED display touch screen, that is, the size of the touch glass is less than or equal to the size of the display screen, while the size of the touch glass of conventional products is larger than the size of the display screen.

[0064] An innovative and unique structure with a thin protruding outer shell to protect the touch glass and the display screen makes the product have an almost borderless feeling, and the thickness of the protruding thin wall is less than 1 mm.

[0065] The R & D and design adopt high-hardness tempered glass as the human-computer interaction touch surface, which is wear-resistant, scratch-resistant, not easy to break, and durable. It solves the disadvantages of the stainless steel surface or acrylic surface of traditional buttons fading and not being wear-resistant.

[0066] As Figure 2As shown, the main control circuit 1 includes a main control chip U1, a connector P2, a crystal oscillator X1, resistors R4, R13, and capacitors C2, C3, C4, C5, C7, C8, C9, C12, C17;

[0067] One end of capacitor C2 and one end of capacitor C3 are both connected to the VCC1V2 voltage, and the other ends of capacitor C2 and capacitor C3 are both grounded. One end of capacitor C4, one end of capacitor C5, one end of capacitor C7, and one end of capacitor C8 are all connected to the VCC3V3 voltage, and the other ends of capacitor C4, capacitor C5, capacitor C7, and capacitor C8 are all grounded. Pin 1 of the connector P2 is connected to the VCC3V3 voltage, pin 2 of the connector P2 is grounded, pin 3 of the connector P2 is electrically connected to pin 21 of the main control chip U1, pin 4 of the connector P2 is electrically connected to pin 22 of the main control chip U1. Pin 1 of the crystal oscillator X1 is respectively electrically connected to one end of capacitor C17, one end of resistor R13, and pin 13 of the main control chip U1. Pin 3 of the crystal oscillator X1 is respectively electrically connected to the other end of resistor R13, one end of capacitor C12, and pin 12 of the main control chip U1. The other ends of capacitor C17 and capacitor C12 are both grounded.

[0068] Specifically, the main control circuit 1 realizes stable voltage input and output control through components such as the main control chip U1, the connector P2, the crystal oscillator X1, the resistors R4, R13, and the capacitors C2, C3, C4, C5, C7, C8, C9, C12, C17, effectively supports the operation of the main control chip and the communication connection with other circuits. At the same time, through the precise frequency control of the crystal oscillator X1, it ensures the normal operation and data transmission of the main control chip, providing a reliable foundation for the stable operation of the entire dynamic variable elevator button display system.

[0069] As Figure 3 shown, the picture storage circuit 2 includes a flash memory chip U2 and a capacitor C11;

[0070] Pin 1 of the flash memory chip U2 is electrically connected to pin 36 of the main control chip U1, pin 2 of the flash memory chip U2 is electrically connected to pin 35 of the main control chip, pins 3, 7, and 8 of the flash memory chip U2 are all connected to the VCC3V3 voltage, pin 4 of the flash memory chip U2 is grounded, pin 5 of the flash memory chip U2 is electrically connected to pin 34 of the main control chip U1, pin 6 of the flash memory chip U2 is electrically connected to pin 37 of the main control chip U1, one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to the VCC3V3 voltage.

[0071] Specifically, the picture storage circuit 2 uses the flash memory chip U2 as the core and realizes the storage and output of image data by connecting to multiple pins of the main control chip U1. The pins 3, 7, and 8 of the flash memory chip U2 are connected to the 3.3V regulated power supply, the pin 4 is grounded, and the pins 5 and 6 are respectively connected to the pins 34 and 37 of the main control chip U1, forming a data transmission channel with the main control circuit 1. At the same time, one end of the capacitor C11 is grounded and the other end is also connected to the 3.3V voltage, which plays a role in power supply filtering and stabilization, ensuring the reliable storage and high-speed transmission of image data. The picture storage circuit 2 can efficiently store and output various types of image data required.

[0072] As Figure 4 shown, the key setting communication main control board further includes a TYPE-C program update circuit 3, and the TYPE-C program update circuit 3 is electrically connected to the main control circuit 1 for receiving configuration update data and outputting it to the main control circuit 1;

[0073] The TYPE-C program update circuit 3 includes a USB chip U6, a diode D4, and a capacitor C30;

[0074] The pins A1, A12, B1, and B12 of the USB chip U6 are all grounded. The pin A4 of the USB chip U6 is electrically connected to the negative electrode of the diode D4, the positive electrode of the diode D4 is connected to the 5V voltage, one end of the capacitor C30 is grounded, the other end of the capacitor C30 is connected to the VBUS voltage, the pins A7 and B7 of the USB chip U6 are both connected to the pin 7 of the main control chip U1, and the pins A6 and B6 of the USB chip U6 are both connected to the pin 8 of the main control chip U1.

[0075] Specifically, the TYPE-C program update circuit 3 uses the USB chip U6 as the core and forms a simple power management circuit through the diode D4 and the capacitor C30, which can receive an external 5V power supply and provide the VBUS voltage. At the same time, the pins A7 and B7 of the USB chip U6 are connected to the pin 7 of the main control chip U1, and the pins A6 and B6 are connected to the pin 8 of the main control chip U1, establishing a USB communication interface and realizing the online update of the firmware program in the main control circuit 1 through the TYPE-C interface. Users only need to connect external devices such as mobile phones or computers to complete the online upgrade of the program through this circuit, improving the maintainability and adaptability of the system. This flexible firmware update mechanism ensures that the entire elevator key display system can be dynamically adjusted and optimized according to actual needs, providing a more intelligent and personalized experience for users.

[0076] In a specific embodiment, the dynamic variable elevator button display system of this embodiment incorporates floor numbers, icons, and text descriptions in a variety of different styles, fonts, sizes, colors, and lighting effects, which can be selected and set through an APP or a mini-program to meet the high-quality experience requirements at different times and for personalization. The replacement time of the pictures displayed on the elevator buttons is fast, and it can be changed in as fast as 1 minute.

[0077] As Figure 5 shown, the button setting communication main control board further includes a 485 communication circuit 4, and the 485 communication circuit 4 is electrically connected to the main control circuit 1 for receiving RS485 signals;

[0078] The 485 communication circuit 4 includes an RS485 differential transceiver chip U4, a connector P4, a diode D1, resistors R14, R15, R16, R17, R18, a triode Q2, capacitors C18, C29;

[0079] Pin 1 of the RS485 differential transceiver chip U4 is electrically connected to pin 4 of the connector P2. Pins 2 and 3 of the RS485 differential transceiver chip U4 and one end of the resistor R15 are all electrically connected to the collector of the triode Q2. Pin 4 of the RS485 differential transceiver chip U4 is electrically connected to pin 3 of the connector P2. Pin 5 of the RS485 differential transceiver chip U4 is grounded. Pin 6 of the RS485 differential transceiver chip U4 is electrically connected to pin 2 of the connector P4, one end of the resistor R18, and one end of the resistor R16 respectively. Pin 7 of the RS485 differential transceiver chip U4 is electrically connected to pin 1 of the connector P4, the other end of the resistor R16, and one end of the resistor R14 respectively. Pin 8 of the RS485 differential transceiver chip U4 is connected to the VCC3V3 voltage. The other end of the resistor R15 is connected to the VCC3V3 voltage. The base of the triode Q2 is electrically connected to the positive electrode of the diode D1, one end of the resistor R17, and one end of the capacitor C18 respectively. The negative electrode of the diode D1 and the other end of the resistor R17 are both electrically connected to pin 3 of the connector P2. The emitter of the triode Q2 and the other end of the capacitor C18 are both grounded. The other end of the resistor R18 is connected to the VCC3V3 voltage. The other end of the resistor R14 is grounded. Pins 3-5 of the connector P4 are all grounded. One end of the capacitor C29 is grounded, and the other end of the capacitor C29 is connected to the VCC3V3 voltage.

[0080] Specifically, the 485 communication circuit 4 is centered around the RS485 differential transceiver chip U4. It provides a standard RS485 bus interface through the connector P4, and realizes the transceiver control and protection of RS485 signals through components such as the diode D1, the triode Q2, the resistors R14 - R18, and the capacitors C18, C29, etc. This circuit can receive differential signals from the RS485 bus and convert them into TTL - level signals for output to the main control circuit 1. The 485 communication circuit 4 also includes a transmit - drive circuit based on the triode Q2, which can convert the TTL - level signals output by the main control circuit 1 into differential signals compliant with the RS485 standard and drive the RS485 bus. The 485 communication circuit 4 provides a reliable RS485 communication interface for the entire system, ensuring the efficient transmission of elevator button settings and status information, and laying a solid foundation for realizing the dynamic variable display function.

[0081] As Figure 6 shown, the button - setting communication main control board further includes a Bluetooth wireless connection circuit 5. The Bluetooth wireless connection circuit 5 is electrically connected to the main control circuit 1 and is used to receive Bluetooth signals;

[0082] The Bluetooth wireless connection circuit 5 includes a Bluetooth chip U9;

[0083] Pin 2, pin 15, and pin 18 of the Bluetooth chip U9 are all grounded. Pin 3 of the Bluetooth chip U9 is connected to the VCC3V3 voltage. Pin 13 of the Bluetooth chip U9 is electrically connected to pin 3 of the connector P2, and pin 14 of the Bluetooth chip U9 is electrically connected to pin 4 of the connector P2.

[0084] Specifically, the Bluetooth wireless connection circuit 5 is centered around the Bluetooth chip U9 and realizes data interaction with the main control chip U1 through the connector P2 of the main control circuit 1. Pin 13 and pin 14 of the Bluetooth chip U9 are respectively connected to pin 3 and pin 4 of the connector P2, forming a communication interface with the main control chip U1. At the same time, pin 2, pin 15, and pin 18 are grounded, and pin 3 is connected to the 3.3V power supply, providing a stable voltage for the Bluetooth chip U9. Through Bluetooth wireless connection, users can use mobile devices such as mobile phones to interact with the elevator button system, realizing real - time update and setting of image content. This wireless communication method greatly enhances the flexibility and configurability of the system, providing users with a more intelligent and convenient elevator - using experience.

[0085] As Figure 7 shown, the button - setting communication main control board further includes an elevator button interface circuit 6. The elevator button interface circuit 6 is electrically connected to the main control circuit 1 and is used to receive floor - selection signals and output image data;

[0086] The elevator button interface circuit 6 includes optocouplers U5, U10, connector P5, MOSFET Q3, resistors R19, R20, R21, R22, R23, R24, R25, R26, R27, R28;

[0087] Pin 1 of optocoupler U5 is electrically connected to one end of resistor R20, the other end of resistor R20 is electrically connected to pin 1 of connector P5, pin 2 of optocoupler U5 is electrically connected to one end of resistor R21, the other end of resistor R21 is electrically connected to pin 2 of connector P5, pin 3 of optocoupler U5 is respectively electrically connected to one end of resistor R19, one end of resistor R22, and pin 38 of the main control chip U1. The other end of resistor R22 is grounded. Pin 4 of optocoupler U5 and the other end of resistor R19 are both connected to the VCC3V3 voltage. Pin 1 of optocoupler U10 is electrically connected to one end of resistor R25, the other end of resistor R25 is respectively electrically connected to one end of resistor R24 and one end of resistor R27. The other end of resistor R24 is electrically connected to the source of MOSFET Q3. The drain of MOSFET Q3 is connected to the VCC3V3 voltage. The gate of MOSFET Q3 is respectively electrically connected to one end of resistor R23 and one end of resistor R26. The other end of resistor R23 is electrically connected to pin 39 of the main control chip U1. The other end of resistor R26 is grounded. Pin 2 of optocoupler U10 and the other end of resistor R27 are both grounded. Pin 3 of optocoupler U10 is electrically connected to one end of resistor R28, the other end of resistor R28 is electrically connected to pin 4 of connector P5, pin 4 of optocoupler U10 is electrically connected to pin 3 of connector P5, and pins 7 and 8 of connector P5 are both grounded.

[0088] Specifically, the elevator button interface circuit 6 acts as a bridge between the main control circuit 1 and the elevator buttons. Electrical isolation is achieved through optocouplers U5 and U10, ensuring the anti-interference performance of the system. Pins 1 and 2 of optocoupler U5 are respectively connected to pins 1 and 2 of connector P5, receiving the floor selection signals from the elevator buttons and transmitting them to the main control chip U1 through pin 3. Optocoupler U10 realizes the output of image data from the main control chip U1 to the elevator buttons. Through MOSFET Q3 and related resistor circuits, the 3.3V digital signal is converted into a voltage signal that can drive the display of the elevator buttons, achieving seamless docking between the main control circuit 1 and the elevator buttons.

[0089] As Figure 8 shown, the button setting communication main control board further includes a display screen interface circuit 7. The display screen interface circuit 7 is electrically connected to the main control circuit 1 and is used to connect to the display screen;

[0090] The display screen interface circuit 7 includes connectors P1, P3, a step-down voltage regulator chip U3, a MOSFET Q1, resistors R1, R2, R3, R5, R6, R7, R8, R9, R10, R11, R12, R34, capacitors C1, C10, C13, C14, C15, C16;

[0091] One end of the connector P1 is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to the drain of the MOSFET Q1, the source of the MOSFET Q1 is grounded, the gate of the MOSFET Q1 is electrically connected to one end of the resistor R2 and one end of the resistor R3 respectively, the other end of the resistor R2 and one end of the resistor R34 are both electrically connected to the pin 11 of the main control chip U1, the other end of the resistor R3 and the other end of the resistor R34 are both grounded, one end of the capacitor C1 is connected to the VCC3V3 voltage, the other end of the capacitor C1 is grounded, pins 3, 5 - 13 of the connector P1 are all grounded, pin 2 of the connector P1 is respectively connected to one end of the capacitor C16, one end of the capacitor C15, and pin 2 of the step-down voltage regulator chip U3, pin 1 of the step-down voltage regulator chip U3, the other end of the capacitor C15, the other end of the capacitor C16, one end of the capacitor C13 and one end of the capacitor C15 are all grounded, pin 3 of the step-down voltage regulator chip U3, the other end of the capacitor C13 and the other end of the capacitor C14 are all connected to the 5V voltage, pin 4 of the connector P1 is connected to the VCC3V3 voltage, pins 14 - 35 of the connector P1 are respectively and sequentially electrically connected to pins 23, 28, 25, 27, 19, 18, 6, 5, 20, 4, 3, 2, 1, 48, 47, 24, 42, 41, 44, 43, 33, 40 of the main control chip U1, pin 36 of the connector P1 is connected to pin 4 of the connector P3, pin 37 of the connector P1 is connected to pin 3 of the connector P3, one end of the resistor R5, one end of the resistor R7 and one end of the resistor R9 are all connected to the VCC3V3 voltage, the other end of the resistor R5 is electrically connected to one end of the resistor R6, the other end of the resistor R7 is electrically connected to one end of the resistor R8, the other end of the resistor R9 is electrically connected to one end of the resistor R10, the other end of the resistor R6, the other end of the resistor R8 and the other end of the resistor R10 are all grounded, pin 1 of the connector P3, one end of the resistor R11 and one end of the resistor R12 are all connected to the VCC3V3 voltage, pin 2 of the connector P3 and the other end of the resistor R11 are both electrically connected to pin 31 of the main control chip U1, pin 3 of the connector P3 and the other end of the resistor R12 are both electrically connected to pin 32 of the main control chip U1, pin 4 of the connector P3 is electrically connected to pin 26 of the main control chip U1, pin 5 of the connector P3 is electrically connected to pin 30 of the main control chip U1, and pin 6 of the connector P3 is grounded.

[0092] Specifically, the display interface circuit 7 provides the connection and driving functions between the entire key setting communication main control board and an external display device. This circuit takes connectors P1 and P3 as the core and realizes the transmission and regulation of data signals, clock signals, power supply voltages, etc. of the display screen by connecting to multiple pins of the main control chip U1. Pins 14 - 35 of connector P1 are respectively connected to the pins of the main control chip U1, forming a data transmission channel from the main control chip to the display screen. At the same time, connector P3 also provides the output of the DCLK clock signal and other control signals. The circuit also includes a power management circuit based on MOSFET transistor Q1 and step-down voltage regulator chip U3, which can convert the 3.3V power supply of the system into the voltage required by the display screen, ensuring the stability and compatibility of the power supply.

[0093] As Figure 9 shown, the key setting communication main control board further includes a power input / output power supply circuit 8, and the power input / output power supply circuit 8 is electrically connected to the main control circuit 1 for providing electrical energy;

[0094] The power input / output power supply circuit 8 includes a power management chip U7, a step-down voltage regulator chip U8, a light-emitting diode D3, a diode D2, a transient suppression diode DZ1, resistors R29, R31, R32, R33, inductors L1, L2, capacitors C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, E1, E2;

[0095] Pin 1 of the power management chip U7 is electrically connected to one end of the capacitor C19. Pin 2 of the power management chip U7 is grounded. Pin 3 of the power management chip U7 is electrically connected to one end of the resistor R30, one end of the resistor R32, and one end of the capacitor C22 respectively. Pin 4 of the power management chip U7 is electrically connected to one end of the resistor R29 and one end of the resistor R31 respectively. Pin 5 of the power management chip U7 is electrically connected to the other end of the resistor R29. Pin 6 of the power management chip U7 is electrically connected to the other end of the capacitor C19 and one end of the inductor L2 respectively. The other end of the resistor R31 is grounded. The other end of the inductor L2 is electrically connected to the other end of the resistor R30, the other end of the capacitor C22, one end of the capacitor C20, one end of the capacitor C21, and the positive electrode of the capacitor E1 respectively. Pin 6 of the power management chip U7 outputs a 5V voltage. The other end of the capacitor C20, the other end of the capacitor C21, and the negative electrode of the capacitor E1 are all grounded. The other end of the resistor R32 is grounded. One end of the resistor R33 is connected to the VCC3V3 voltage. The other end of the resistor R33 is electrically connected to the positive electrode of the light-emitting diode D3. The negative electrode of the light-emitting diode D3 is grounded. The positive electrode of the capacitor E2, one end of the capacitor C23, and one end of the capacitor C24 are all connected to the 24V voltage. The negative electrode of the capacitor E2, the other end of the capacitor C23, and the other end of the capacitor C24 are all grounded. Pin 1 of the buck regulator chip U8, one end of the capacitor C27, one end of the capacitor C28, one end of the capacitor C25, and one end of the capacitor C26 are all grounded. Pin 3 of the buck regulator chip U8, the other end of the capacitor C27, and the other end of the capacitor C28 are all connected to the 5V voltage. Pin 2 of the buck regulator chip U8 is electrically connected to Pin 4 of the buck regulator chip U8, the other end of the capacitor C25, and the other end of the capacitor C26 respectively. Pin 2 of the buck regulator chip U8 outputs the VCC3V3 voltage. Pin 1 of the inductor L1 is grounded. Pin 2 of the inductor L1 is connected to the 24V voltage. Pin 3 of the inductor L2 is electrically connected to Pin 6 of the connector P5. Pin 4 of the inductor L1 is electrically connected to the negative electrode of the diode D2. The positive electrode of the diode D2 and Pin 5 of the connector P5 are both electrically connected to one end of the transient suppression diode DZ1. The other end of the transient suppression diode DZ1 is grounded.

[0096] Specifically, the power input and output supply circuit 8 provides reliable power support for the entire key setting communication main control board. This circuit takes the power management chip U7 and the buck regulator chip U8 as the core, and realizes the conversion and adjustment of voltages from the 24V external power supply to various internal voltages of the system. The power management chip U7 uses the switching voltage regulator topology to convert the 24V power supply into a 5V voltage to support the main working voltage of the system. The buck regulator chip U8 further steps down the 5V to 3.3V to meet the voltage requirements of the main control circuit 1 and other modules. This circuit also includes a surge suppression circuit, using the diode D2 and the transient suppression diode DZ1 to protect the system from external transient overvoltage damage.

[0097] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dynamic variable elevator button display system, characterized in that, The system includes a button-setting communication main control board and a plurality of elevator buttons. The button-setting communication main control board is signal-connected to the plurality of elevator buttons. The button-setting communication main control board is used to receive external signals and process them. The elevator buttons are used to output floor selection signals and receive image data; The button-setting communication main control board includes a main control circuit (111) and a picture storage circuit (222); The main control circuit (111) is electrically connected to the picture storage circuit (222) and is used to output control signals to other circuits; The picture storage circuit (222) is electrically connected to the main control circuit (111) and is used to store and output image data.

2. The dynamic variable elevator button display system according to claim 1, wherein The elevator buttons include a raised face cover, an LCD&OLED display touch screen, an electronic main board, and an interface-opening rear cover; The LCD&OLED display touch screen is arranged between the raised face cover and the electronic main board, and the electronic main board is arranged between the LCD&OLED display touch screen and the interface-opening rear cover; The shapes of the central hole of the raised face cover and the shape of the LCD&OLED display touch screen include: circular, rectangular, and long rectangular; The image data output by the elevator buttons includes advertising pictures, pictures of the twenty-four solar terms, pictures of traditional festivals, pictures of important festivals, and user personalized pictures.

3. The dynamic variable elevator button display system according to claim 2, wherein The main control circuit (111) includes a main control chip U1, a connector P2, a crystal oscillator X1, resistors R4, R13, capacitors C2, C3, C4, C5, C7, C8, C9, C12, C17; One end of capacitor C2 and one end of capacitor C3 are both connected to the VCC1V2 voltage, the other end of capacitor C2 and the other end of capacitor C3 are both grounded, one end of capacitor C4, one end of capacitor C5, one end of capacitor C7, and one end of capacitor C8 are all connected to the VCC3V3 voltage, the other end of capacitor C4, the other end of capacitor C5, the other end of capacitor C7, and the other end of capacitor C8 are all grounded, pin 1 of connector P2 is connected to the VCC3V3 voltage, pin 2 of connector P2 is grounded, pin 3 of connector P2 is electrically connected to pin 21 of the main control chip U1, pin 4 of connector P2 is electrically connected to pin 22 of the main control chip U1, pin 1 of the crystal oscillator X1 is respectively connected to one end of capacitor C17, one end of resistor R13, and pin 13 of the main control chip U1, pin 3 of the crystal oscillator X1 is respectively connected to the other end of resistor R13, one end of capacitor C12, and pin 12 of the main control chip U1, and the other end of capacitor C17 and the other end of capacitor C12 are both grounded.

4. The dynamic variable elevator button display system according to claim 3, wherein, The picture storage circuit (222) includes a flash memory chip U2 and a capacitor C11; Pin 1 of the flash chip U2 is electrically connected to pin 36 of the main control chip U1, pin 2 of the flash chip U2 is electrically connected to pin 35 of the main control chip, pins 3, 7, and 8 of the flash chip U2 are all connected to the VCC3V3 voltage, pin 4 of the flash chip U2 is grounded, pin 5 of the flash chip U2 is electrically connected to pin 34 of the main control chip U1, pin 6 of the flash chip U2 is electrically connected to pin 37 of the main control chip U1, one end of the capacitor C11 is grounded, and the other end of the capacitor C11 is connected to the VCC3V3 voltage.

5. A dynamic variable elevator button display system according to claim 4, characterized in that, The key-setting communication main control board further includes a TYPE-C program update circuit (333), and the TYPE-C program update circuit (333) is electrically connected to the main control circuit (111) for receiving configuration update data and outputting the same to the main control circuit (111); The TYPE-C program update circuit (333) includes a USB chip U6, a diode D4, and a capacitor C30; Pins A1, A12, B1, and B12 of the USB chip U6 are all grounded, pin A4 of the USB chip U6 is electrically connected to the negative electrode of the diode D4, the positive electrode of the diode D4 is connected to the 5V voltage, one end of the capacitor C30 is grounded, the other end of the capacitor C30 is connected to the VBUS voltage, pins A7 and B7 of the USB chip U6 are both electrically connected to pin 7 of the main control chip U1, and pins A6 and B6 of the USB chip U6 are both electrically connected to pin 8 of the main control chip U1.

6. The dynamic variable elevator button display system according to claim 5, characterized in that, The key-setting communication main control board further includes a 485 communication circuit (444), and the 485 communication circuit (444) is electrically connected to the main control circuit (111) for receiving RS485 signals; The 485 communication circuit (444) includes an RS485 differential transceiver chip U4, a connector P4, a diode D1, resistors R14, R15, R16, R17, R18, a triode Q2, and capacitors C18 and C29; Pin 1 of the RS485 differential transceiver chip U4 is electrically connected to pin 4 of the connector P2. Pin 2 and pin 3 of the RS485 differential transceiver chip U4 and one end of the resistor R15 are all electrically connected to the collector of the triode Q2. Pin 4 of the RS485 differential transceiver chip U4 is electrically connected to pin 3 of the connector P2. Pin 5 of the RS485 differential transceiver chip U4 is grounded. Pin 6 of the RS485 differential transceiver chip U4 is electrically connected to pin 2 of the connector P4, one end of the resistor R18, and one end of the resistor R16 respectively. Pin 7 of the RS485 differential transceiver chip U4 is electrically connected to pin 1 of the connector P4, the other end of the resistor R16, and one end of the resistor R14 respectively. Pin 8 of the RS485 differential transceiver chip U4 is connected to the VCC3V3 voltage. The other end of the resistor R15 is connected to the VCC3V3 voltage. The base of the triode Q2 is electrically connected to the positive electrode of the diode D1, one end of the resistor R17, and one end of the capacitor C18 respectively. The negative electrode of the diode D1 and the other end of the resistor R17 are both electrically connected to pin 3 of the connector P2. The emitter of the triode Q2 and the other end of the capacitor C18 are both grounded. The other end of the resistor R18 is connected to the VCC3V3 voltage. The other end of the resistor R14 is grounded. Pins 3 - 5 of the connector P4 are all grounded. One end of the capacitor C29 is grounded, and the other end of the capacitor C29 is connected to the VCC3V3 voltage.

7. The dynamic variable elevator button display system according to claim 6, characterized in that The key - set communication main control board further includes a Bluetooth wireless connection circuit (555), and the Bluetooth wireless connection circuit (555) is electrically connected to the main control circuit (111) for receiving Bluetooth signals; The Bluetooth wireless connection circuit (555) includes a Bluetooth chip U9; Pin 2, pin 15, and pin 18 of the Bluetooth chip U9 are all grounded. Pin 3 of the Bluetooth chip U9 is connected to the VCC3V3 voltage. Pin 13 of the Bluetooth chip U9 is electrically connected to pin 3 of the connector P2. Pin 14 of the Bluetooth chip U9 is electrically connected to pin 4 of the connector P2.

8. The dynamic variable elevator button display system according to claim 7, wherein, The key - set communication main control board further includes an elevator key interface circuit (666), and the elevator key interface circuit (666) is electrically connected to the main control circuit (111) for receiving floor selection signals and outputting image data; The elevator key interface circuit (666) includes optocouplers U5, U10, a connector P5, a MOSFET transistor Q3, resistors R19, R20, R21, R22, R23, R24, R25, R26, R27, R28; Pin 1 of the optocoupler U5 is electrically connected to one end of the resistor R20, the other end of the resistor R20 is electrically connected to pin 1 of the connector P5, pin 2 of the optocoupler U5 is electrically connected to one end of the resistor R21, the other end of the resistor R21 is electrically connected to pin 2 of the connector P5, pin 3 of the optocoupler U5 is electrically connected to one end of the resistor R19, one end of the resistor R22, and pin 38 of the main control chip U1 respectively. The other end of the resistor R22 is grounded. Pin 4 of the optocoupler U5 and the other end of the resistor R19 are both connected to the VCC3V3 voltage. Pin 1 of the optocoupler U10 is electrically connected to one end of the resistor R25, the other end of the resistor R25 is electrically connected to one end of the resistor R24 and one end of the resistor R27 respectively. The other end of the resistor R24 is electrically connected to the source of the MOSFET Q3. The drain of the MOSFET Q3 is connected to the VCC3V3 voltage. The gate of the MOSFET Q3 is electrically connected to one end of the resistor R23 and one end of the resistor R26 respectively. The other end of the resistor R23 is electrically connected to pin 39 of the main control chip U1. The other end of the resistor R26 is grounded. Pin 2 of the optocoupler U10 and the other end of the resistor R27 are both grounded. Pin 3 of the optocoupler U10 is electrically connected to one end of the resistor R28, the other end of the resistor R28 is electrically connected to pin 4 of the connector P5. Pin 4 of the optocoupler U10 is electrically connected to pin 3 of the connector P5. Pins 7 and 8 of the connector P5 are both grounded.

9. The dynamic variable elevator button display system according to claim 8, wherein, The key-set communication main control board further includes a display screen interface circuit (777), and the display screen interface circuit (777) is electrically connected to the main control circuit (111) for connecting to a display screen. The display screen interface circuit (777) includes connectors P1, P3, a step-down voltage regulator chip U3, a MOSFET Q1, resistors R1, R2, R3, R5, R6, R7, R8, R9, R10, R11, R12, R34, capacitors C1, C10, C13, C14, C15, C16. The connector P1 is electrically connected to one end of the resistor R1. The other end of the resistor R1 is electrically connected to the drain of the MOSFET Q1. The source of the MOSFET Q1 is grounded. The gate of the MOSFET Q1 is electrically connected to one end of the resistor R2 and one end of the resistor R3 respectively. The other end of the resistor R2 and one end of the resistor R34 are both electrically connected to pin 11 of the main control chip U1. The other end of the resistor R3 and the other end of the resistor R34 are both grounded. One end of the capacitor C1 is connected to the VCC3V3 voltage, and the other end of the capacitor C1 is grounded. Pins 3, 5 - 13 of the connector P1 are all grounded. Pin 2 of the connector P1 is electrically connected to one end of the capacitor C16, one end of the capacitor C15, and pin 2 of the step-down voltage regulator chip U3 respectively. Pin 1 of the step-down voltage regulator chip U3, the other end of the capacitor C15, the other end of the capacitor C16, one end of the capacitor C13, and one end of the capacitor C15 are all grounded. Pin 3 of the step-down voltage regulator chip U3, the other end of the capacitor C13, and the other end of the capacitor C14 are all connected to the 5V voltage. Pin 4 of the connector P1 is connected to the VCC3V3 voltage. Pins 14 - 35 of the connector P1 are electrically connected to pins 23, 28, 25, 27, 19, 18, 6, 5, 20, 4, 3, 2, 1, 48, 47, 24, 42, 41, 44, 43, 33, 40 of the main control chip U1 in sequence. Pin 36 of the connector P1 is electrically connected to pin 4 of the connector P3. Pin 37 of the connector P1 is electrically connected to pin 3 of the connector P3. One end of the resistor R5, one end of the resistor R7, and one end of the resistor R9 are all connected to the VCC3V3 voltage. The other end of the resistor R5 is electrically connected to one end of the resistor R6. The other end of the resistor R7 is electrically connected to one end of the resistor R8. The other end of the resistor R9 is electrically connected to one end of the resistor R10. The other end of the resistor R6, the other end of the resistor R8, and the other end of the resistor R10 are all grounded. Pin 1 of the connector P3, one end of the resistor R11, and one end of the resistor R12 are all connected to the VCC3V3 voltage. Pin 2 of the connector P3 and the other end of the resistor R11 are both electrically connected to pin 31 of the main control chip U1. Pin 3 of the connector P3 and the other end of the resistor R12 are both electrically connected to pin 32 of the main control chip U1. Pin 4 of the connector P3 is electrically connected to pin 26 of the main control chip U1. Pin 5 of the connector P3 is electrically connected to pin 30 of the main control chip U1. Pin 6 of the connector P3 is grounded.

10. A dynamic variable elevator button display system according to claim 9, characterized in that, The key - set communication main control board further includes a power input - output power supply circuit (888). The power input - output power supply circuit (888) is electrically connected to the main control circuit (111) and is used to provide electrical energy. The power input / output power supply circuit (888) includes a power management chip U7, a step-down voltage regulator chip U8, a light-emitting diode D3, a diode D2, a transient suppression diode DZ1, resistors R29, R31, R32, R33, inductors L1, L2, capacitors C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, E1, and E2; Pin 1 of the power management chip U7 is electrically connected to one end of the capacitor C19. Pin 2 of the power management chip U7 is grounded. Pin 3 of the power management chip U7 is electrically connected to one end of the resistor R30, one end of the resistor R32, and one end of the capacitor C22 respectively. Pin 4 of the power management chip U7 is electrically connected to one end of the resistor R29 and one end of the resistor R31 respectively. Pin 5 of the power management chip U7 is electrically connected to the other end of the resistor R29. Pin 6 of the power management chip U7 is electrically connected to the other end of the capacitor C19 and one end of the inductor L2 respectively. The other end of the resistor R31 is grounded. The other end of the inductor L2 is electrically connected to the other end of the resistor R30, the other end of the capacitor C22, one end of the capacitor C20, one end of the capacitor C21, and the positive electrode of the capacitor E1 respectively. Pin 6 of the power management chip U7 outputs a 5V voltage. The other ends of the capacitor C20, the capacitor C21, and the negative electrode of the capacitor E1 are all grounded. The other end of the resistor R32 is grounded. One end of the resistor R33 is connected to the VCC3V3 voltage. The other end of the resistor R33 is electrically connected to the positive electrode of the light-emitting diode D3. The negative electrode of the light-emitting diode D3 is grounded. The positive electrode of the capacitor E2, one end of the capacitor C23, and one end of the capacitor C24 are all connected to the 24V voltage. The negative electrode of the capacitor E2, the other end of the capacitor C23, and the other end of the capacitor C24 are all grounded. Pin 1 of the step-down voltage regulator chip U8, one end of the capacitor C27, one end of the capacitor C28, one end of the capacitor C25, and one end of the capacitor C26 are all grounded. Pin 3 of the step-down voltage regulator chip U8, the other end of the capacitor C27, and the other end of the capacitor C28 are all connected to the 5V voltage. Pin 2 of the step-down voltage regulator chip U8 is electrically connected to pin 4 of the step-down voltage regulator chip U8, the other end of the capacitor C25, and the other end of the capacitor C26 respectively. Pin 2 of the step-down voltage regulator chip U8 outputs the VCC3V3 voltage. Pin 1 of the inductor L1 is grounded. Pin 2 of the inductor L1 is connected to the 24V voltage. Pin 3 of the inductor L2 is electrically connected to pin 6 of the connector P5. Pin 4 of the inductor L1 is electrically connected to the negative electrode of the diode D2. The positive electrode of the diode D2 and pin 5 of the connector P5 are both electrically connected to one end of the transient suppression diode DZ1. The other end of the transient suppression diode DZ1 is grounded.

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