Acoustic surface wave touch screen elevator control scheme and applicable circuit thereof

Through the surface acoustic wave touch screen ladder control scheme and its applicable circuit, the aging and technical backward problems caused by the use of physical button mode of traditional elevator human-computer interaction are solved, and high-precision, low-cost, strong reliability and intelligent human-computer interaction are achieved. control.

CN222454169UActive Publication Date: 2025-02-11BEIJING DWIN TECH
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Patent Information

Application Number
CN202421103998.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-21
Publication Date
2025-02-11
Estimated Expiration
2034-05-21

AI Technical Summary

Technical Problem

Traditional elevator human-computer interaction uses physical button mode, which causes aging or abnormality of buttons and indicator lights, which may cause elevator failures or accidents. The traditional elevator control technology is backward and cannot meet the current society's demand for intelligence, humanization, convenience and high-end. .

Method used

Adopt surface acoustic wave touch screen ladder control scheme and its applicable circuits, including temperature and humidity circuit, audio circuit, RTC circuit, RFID circuit, serial port circuit, T5L COF screen circuit, RS485 circuit, power supply circuit, IO expansion circuit, lighting circuit, motor drive Circuit and surface acoustic wave touch screen realize a complete human-computer interactive elevator control unit.

Benefits of technology

It improves touch accuracy, reduces costs, enhances reliability and anti-interference capabilities, extends service life, and meets the needs of intelligence, humanization, convenience and high-end.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an acoustic surface wave touch screen elevator control scheme and an applicable circuit thereof. The elevator control scheme comprises a temperature and humidity circuit, an audio circuit, an RTC circuit, an RFID circuit, a serial port circuit, a T5L COF screen circuit, an RS485 circuit, a power supply circuit, an IO expansion circuit, a light circuit, a motor driving circuit, an acoustic surface wave touch screen and an elevator execution unit. The temperature and humidity circuit, the audio circuit, the RTC circuit and the RFID circuit are connected with the T5L COF screen circuit; the surface acoustic wave touch screen is connected with the T5L COF screen circuit through the serial port circuit; the elevator execution unit is connected with the T5L COF screen circuit through the RS485 circuit; the light circuit and the motor driving circuit are connected with the IO expansion circuit; the IO expansion circuit is connected with the T5L COF screen circuit; the power supply circuit supplies power to other parts of the elevator control scheme; the elevator control system is high in touch precision, low in elevator control scheme cost, high in reliability, strong in expansibility and strong in anti-interference capability.
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Description

Technical Field

[0001] The utility model relates to surface acoustic wave touch screen recognition and human-computer interactive display technology, in particular to a surface acoustic wave touch screen ladder control scheme and an applicable circuit thereof. Background Art

[0002] In the current fast-developing modern society, the demand for human-computer interaction is increasing day by day, showing explosive development. Whether in household appliances, cars, factory machines, etc., there are fewer and fewer devices without human-computer interaction, and the proportion of devices with human-computer interaction with touch function is increasing. But at the same time, new technical bottlenecks have also emerged. The size of the touch screen is getting larger and larger, and the requirements for recognition accuracy, anti-interference ability, service life, reliability, cost, etc. are getting higher and higher, and the application scenarios are becoming more and more demanding. In this context, taking the elevator that must be used every day as an example, the elevator is used very frequently and has very high reliability. Errors and failures cannot occur, otherwise it will affect daily use; elevators are also special equipment, which is closely related to human safety. They must be cautious in design, production, and operation. However, the traditional elevator human-computer interaction uses the traditional physical button mode. Although the physical button mode is simple, the buttons and the indicator lights behind the buttons will age or become abnormal after a fixed period or a fixed number of uses due to the high frequency of use. If there is a problem, the elevator will fail to be used at the least, and the elevator accident will occur at the worst. At the same time, traditional elevator control is technologically backward and outdated, unable to adapt to the expectations of the current society. Traditional elevator control can only provide the most basic human-computer interaction, and cannot provide the intelligence, humanity, convenience, and high-end requirements of the current society. Therefore, technological updates to replace traditional elevator control are urgently needed and used on a large scale. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a surface acoustic wave touch screen ladder control solution and an applicable circuit thereof, which has high touch accuracy, low ladder control solution cost, high reliability, strong expansibility, rich functional interfaces, fast response, strong anti-interference ability and long service life.

[0004] The utility model solves the above-mentioned technical problem with the following technical solutions: a surface acoustic wave touch screen elevator control solution and its applicable circuits include a temperature and humidity circuit, an audio circuit, an RTC circuit, an RFID circuit, a serial port circuit, a T5L COF screen circuit, an RS485 circuit, a power supply circuit, an IO expansion circuit, a lighting circuit, a motor drive circuit, a surface acoustic wave touch screen, and an elevator execution unit; the temperature and humidity circuit, the audio circuit, the RTC circuit, and the RFID circuit are connected to the T5L COF screen circuit; the surface acoustic wave touch screen is connected to the T5L COF screen circuit through the serial port circuit; the elevator execution unit is connected to the T5L COF screen circuit through the RS485 circuit; the lighting circuit and the motor drive circuit are connected to the IO expansion circuit; the IO expansion circuit is connected to the T5L COF screen circuit; the power supply circuit supplies power to the humidity circuit, the audio circuit, the RTC circuit, the RFID circuit, the surface acoustic wave touch screen, the serial port circuit, the RS485 circuit, the IO expansion circuit, the lighting circuit, and the motor drive circuit.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the temperature and humidity circuit includes a connector CN1; a temperature and humidity sensor can be connected through the connector CN1 to detect the temperature and humidity in the elevator car.

[0007] Furthermore, the audio circuit includes a U8 chip, which realizes the conversion of music from electricity to sound; includes resistors R9, R19, and capacitor C16, and the three devices realize that the U8 chip can control the energy level; includes capacitor C17, and the device realizes the bypass capacitor function for U8; includes resistor R10 and capacitor C18, and the two devices realize the audio signal matching function for the INP signal of U8; includes resistors R11, R12, and capacitors C19, C21, and C20, and these devices realize the conversion of SPK digital audio signals to analog audio signals required by U8; includes capacitors C22 and C23, and the two devices realize the filtering and bypass function of the VCC pin of U8; includes resistor R13, capacitor C24, and connector P1, and the three devices realize the filtering and external interface of the audio signal output by U8.

[0008] Furthermore, the RTC circuit includes a U2 chip, which provides a timing function for a real-time clock; includes capacitors C1, C2, resistors R1, R2, R3, R4, diodes D1, D2, and a backup battery U7, which provide power for the U2 chip and provide backup power when the main power supply is cut off; and includes capacitors C3 and C4, which perform filtering and decoupling functions on the VOUT and VDD pins of the U2 chip.

[0009] Furthermore, the RFID circuit includes a connector CN4 and two resistors R28 and R29; CN4 is used for communicating with the RFID module, and R28 and R29 are used for determining the communication level status of the RFID serial port.

[0010] Furthermore, the surface acoustic wave touch screen refers to a module that realizes the recognition of touch actions on tempered glass through the emission and recognition of sound waves; since the surface acoustic wave module realizes the difference through the emission and reception of sound waves through object obstacles and then realizes the conversion of touch coordinates, there is no aging, functional decline, no recognition and other problems of touch recognition; the emission and reception of the surface acoustic wave module are both at the edge of the structure, and the area of ​​the main body touch recognition is tempered glass that can be silk-screened. Since the strength and wear resistance of tempered glass are very good, the life and reliability of surface acoustic wave touch recognition are better than other existing touch recognition solutions; at the same time, the surface acoustic wave touch screen communicates through a serial port circuit.

[0011] Furthermore, the serial port circuit includes a connector CN2 and two resistors R6 and R5; CN2 is used for communicating with the acoustic surface touch screen, and R6 and R5 are used for determining the communication level state of the serial port of the acoustic surface touch screen.

[0012] Furthermore, the T5L COF screen circuit includes a connector U1, resistors R99, R100, R104, R106, R107, R108, R109, R110, R111, R17, R114, R115, R116, and R117; the function of the above resistors is to determine the state of the signal during the power-on process.

[0013] Furthermore, the RS485 circuit includes a chip U5, which is used for mutual conversion between 485 communication and TTL signals; includes a resistor R26 and a diode U9, the function of which is to convert communication levels; includes resistors R40 and R14, which have the function of pulling up the levels of the DE / RFB and DI pins of U5; capacitor C7 filters and decouples the VCC pin of U5; resistors R25, R27, R20, R21, and R24 have the primary processing function of 485 signals; includes D5 and D6 TVS tubes, which have surge and overvoltage protection functions for 485 bus signals.

[0014] Furthermore, the elevator execution unit refers to an elevator operation unit other than the elevator control, and the operation of the elevator is realized through the elevator execution unit.

[0015] Furthermore, the IO expansion circuit includes a U18 chip, which realizes the function of converting parallel port to serial port, and changes the status of multiple IOs into communication mode to reduce the use of T5L0 COF screen IO; includes capacitors C46 and C47, which realize filtering and decoupling of VDD of U18; and includes a resistor R101, which realizes the level status confirmation of pin 13 of U18.

[0016] Furthermore, the lighting circuit includes resistors R41, R42, R43, R45, R44, R15, R46, R47, R48, and R49, LED lamps LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED74, LED75, LED76, and LED77, and transistors Q1, Q3, and Q4; the above components are used to realize the on and off control of the lighting circuit.

[0017] Furthermore, the motor drive circuit includes connectors P2 and P3, through which electrical connection to the motor is realized; includes MOS tubes U13.1 and U13.2, through which on-off control of the motor is realized; includes diodes D10 and D11, and the diodes realize the current freewheeling function for the inductive load of the motor; includes resistors R75, R93, R95, R96, R97, R98, and transistors Q19 and Q20, and the control of the MOS tube by low-voltage level signals is realized through the above resistors and transistors.

[0018] Furthermore, the power supply circuit includes a U10 chip, which can realize the wide voltage conversion of the power supply to a fixed voltage output; it includes resistors R30, R31, R32, R33, R34, R37, R35, R36, R37, R39, R38, capacitors C8, C29, C31, C30, C34, C32, C33, C35, C36, C37, C38, C39, C40, C41, diodes D7, U11, D9, D8, inductor L1, connector J1, these discrete components combined with the U10 chip realize the function of wide voltage conversion to +5V; it also includes U12, capacitors C42, C43, C44, C45, and the combination of these devices realizes the function of +5V to +3.3V.

[0019] The beneficial effect of taking the above steps is: through the mutual cooperation of temperature and humidity circuit, audio circuit, RTC circuit, RFID circuit, serial port circuit, T5L COF screen circuit, RS485 circuit, power supply circuit, IO expansion circuit, lighting circuit, motor drive circuit, surface acoustic wave touch screen and elevator execution unit, a complete human-machine interactive elevator control unit is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model discloses a surface acoustic wave touch screen ladder control scheme and an overall structural block diagram of its applicable circuit.

[0021] Figure 2 The utility model discloses an audio circuit diagram of a surface acoustic wave touch screen ladder control scheme and its applicable circuit.

[0022] Figure 3 The utility model discloses a surface acoustic wave touch screen ladder control scheme and an RFID circuit diagram of its applicable circuit.

[0023] Figure 4 The utility model discloses a surface acoustic wave touch screen ladder control scheme and a serial port circuit diagram of its applicable circuit.

[0024] Figure 5 The utility model discloses a surface acoustic wave touch screen ladder control scheme and a T5L COF screen circuit diagram of its applicable circuit.

[0025] Figure 6 The utility model discloses a surface acoustic wave touch screen ladder control scheme and an RS485 circuit diagram of its applicable circuit.

[0026] Figure 7 The utility model discloses a surface acoustic wave touch screen ladder control scheme and a power supply circuit diagram of its applicable circuit.

[0027] Figure 8 The utility model discloses a surface acoustic wave touch screen ladder control scheme and an IO expansion circuit diagram of its applicable circuit.

[0028] Fig. 9 The utility model discloses a surface acoustic wave touch screen ladder control scheme and a lighting circuit diagram of its applicable circuit.

[0029] Fig.10 The utility model discloses a surface acoustic wave touch screen ladder control scheme and a motor drive circuit diagram of its applicable circuit.

[0030] Fig.11 This is a silk-screen diagram of the surface wave touch area of ​​a surface acoustic wave touch screen ladder control solution of the utility model.

[0031] Fig.12 The utility model is a software flow chart of a surface acoustic wave touch screen elevator control solution. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1As shown, a surface acoustic wave touch screen elevator control solution and its applicable circuit include temperature and humidity circuit, audio circuit, RTC circuit, RFID circuit, serial port circuit, T5L COF screen circuit, RS485 circuit, power supply circuit, IO expansion circuit, lighting circuit, motor drive circuit, surface acoustic wave touch screen, and elevator execution unit. The temperature and humidity circuit, audio circuit, RTC circuit, and RFID circuit are connected to the T5L COF screen circuit; the surface acoustic wave touch screen is connected to the T5L COF screen circuit through the serial port circuit; the elevator execution unit is connected to the T5L COF screen circuit through the RS485 circuit; the lighting circuit and the motor drive circuit are connected to the IO expansion circuit; the IO expansion circuit is connected to the T5L COF screen circuit; the power supply circuit supplies power to the humidity circuit, audio circuit, RTC circuit, RFID circuit, surface acoustic wave touch screen, serial port circuit, RS485 circuit, IO expansion circuit, lighting circuit, and motor drive circuit.

[0034] like Figure 2 As shown, an audio circuit diagram of a surface acoustic wave touch screen ladder control solution and its applicable circuit includes a connector CN1, wherein pin 1 of the connector CN1 is connected to a +3.3V power supply; pin 2 is connected to a SCCB_SCL signal; pin 3 is connected to a SCCB_SDA signal; and pins 4, 5, and 6 are grounded.

[0035] like Figure 3 As shown, a RFID circuit diagram of a surface acoustic wave touch screen ladder control solution and its applicable circuit: Pin 1 of the CN4 connector is connected to a +3.3V power supply; Pin 2 is connected to the UART4_TX signal and one end of R28, and the other end of R28 is connected to +3.3V; Pin 3 is connected to the UART4_RX signal and one end of R29, and the other end of R29 is connected to +3.3V; Pins 4, 5, and 6 are grounded.

[0036] like Figure 4 As shown, a serial port circuit diagram of a surface acoustic wave touch screen ladder control solution is shown in which pin 1 of the CN2 connector is connected to a +5V power supply; pin 2 is connected to the UART5_TX signal and one end of R6, and the other end of R6 is connected to +3.3V; pin 3 is connected to the UART5_RX signal and one end of R5, and the other end of R5 is connected to +3.3V; pins 4, 5, and 6 are grounded.

[0037] like Figure 5As shown, a T5L COF screen circuit diagram of a surface acoustic wave touch screen ladder control scheme and its applicable circuit, pins 1 and 2 of U1 are connected to +5V; pins 3, 4, 5, 51, and 52 are grounded; pin 11 is connected to OUT_3.3V signal; pin 12 is connected to SPK signal; pin 13 is connected to SD_CMD signal; pin 14 is connected to SD_CLK signal; pin 15 is connected to SD_D3 signal; pin 16 is connected to SD_D2 signal; pin 17 is connected to SD_D1 signal; pin 18 is connected to SD_D0 signal; pin 19 is connected to PWM0 signal and one end of R99, and the other end of R99 is grounded; pin 20 is connected to PWM1 signal and one end of R100, and the other end of R100 is grounded; pin 21 is connected to SDA signal; Pin 22 is connected to SCL signal; Pin 23 is connected to SCK signal; Pin 24 is connected to HCK signal; Pin 25 is connected to SER signal; Pin 26 is connected to SCCB_SDA signal and one end of R1117, and the other end of R117 is connected to +3.3V; Pin 27 is connected to SCCB_SCL signal and one end of R1118, and the other end of R118 is connected to +3.3V; Pin 28 is RESET signal; Pin 29 is connected to VS signal and one end of R1115, and the other end of R115 is connected to +3.3V; Pin 30 is PWDN signal; Pin 31 is connected to HS signal and one end of R114, and the other end of R114 is connected to +3.3V; Pin 32 is connected to PC LK signal and one end of R17, the other end of R17 is connected to +3.3V; pin 33 is connected to D7 signal and one end of R112, the other end of R112 is connected to +3.3V; pin 34 is connected to D6 signal and one end of R111, the other end of R111 is connected to +3.3V; pin 35 is connected to D5 signal and one end of R110, the other end of R110 is connected to +3.3V; pin 36 is connected to D4 signal and one end of R109, the other end of R109 is connected to +3.3V; pin 37 is connected to D3 signal and one end of R108, the other end of R108 is connected to +3.3V; pin 38 is connected to D2 signal and one end of R107, the other end of R107 is connected to +3.3V; pin 39 is connected to D5 signal and one end of R110, the other end of R110 is connected to +3.3V; pin 39 is connected to D4 signal and one end of R109, the other end of R109 is connected to +3.3V; pin 39 is connected to D3 signal and one end of R108, the other end of R108 is connected to +3.3V; pin 39 is connected to D2 signal and one end of R107, the other end of R107 is connected to +3.3V; Pin No. 1 is connected to the D1 signal and one end of R106, and the other end of R106 is connected to +3.3V; Pin No. 40 is connected to the D0 signal and one end of R104, and the other end of R104 is connected to +3.3V; Pin No. 41 is connected to the UART4_TX signal; Pin No. 42 is connected to the UART4_RX signal; Pin No. 43 is connected to the UART5_TX signal; Pin No. 44 is connected to the UART5_RX signal; Pin No. 45 is connected to the MUSIC_EN signal; Pin No. 46 is connected to the UART2_RE signal; Pin No. 47 is connected to the CAN_TX signal; Pin No. 48 is connected to the CAN_RX signal; Pin No. 49 is connected to the UART2_TX signal; Pin No. 50 is connected to the UART2_RX signal.

[0038] like Figure 6As shown, a surface acoustic wave touch screen ladder control scheme and its applicable circuit RS485 circuit diagram, U5 No. 1 pin is connected to one end of U9, the other end of U9 is connected to one end of R26 and UART2_RX signal, the other end of R26 is connected to +3.3V; U5 No. 2 and No. 3 pins are connected to one end of R14 and UART2_RE signal, the other end of R14 is connected to +3.3V; U5 No. 4 pin is connected to one end of R40 and UART2_TX signal, the other end of R40 is connected to +3. 3V; pin 5 of U5 is grounded; pin 6 of U5 is connected to one end of R20, R24, and R27, the other end of R20 is connected to pin 7 of U5, one end of R21, and one end of R25, the other end of R24 is connected to one end of D6, the other end of R27 is connected to +5V, the other end of D6 is grounded, the other end of R21 is connected to one end of D5, the other end of D5 is grounded, and the other end of R25 is grounded; pin 8 of U5 is connected to one end of C7 and +5V, and the other end of C7 is grounded.

[0039] like Figure 7 As shown, a power supply circuit diagram of a surface acoustic wave touch screen ladder control scheme and its applicable circuit is shown in FIG. D8, C30, and R31 are connected in parallel, and one end is connected to +12V and pin 1 of J1, and the other end is grounded; pins 2 and 3 of J1 are grounded; one end of D7 is connected to one end of R31, and the other end is connected to one end of C31; C31, C29, C8, and R30 are connected in parallel, and one end is connected to one end of D7 and pin 2 of U10, and the other end is grounded; pin 2 of U10 is also connected to one end of R32 ; Pin 1 of U10 is connected to one end of C34, and the other end of C34 is connected to pin 3 of U10; Pin 4 of U10 is grounded; Pin 5 of U10 is connected to one end of R37, R35, and R36, and the other end of R37 is connected to +5V, and the other ends of R35 and R36 are grounded; Pin 6 of U10 is connected to one end of R34, and the other end of R34 is connected to C33, and the other end of C33 is grounded; Pin 7 of U10 is connected to one end of R32 and one end of R33, The other end of R33 is grounded; one end of C35 is connected to pin 3 of U10, and the other end is connected to one end of R38, and the other end of R38 is grounded; one end of L1 and D9 are connected, the other end of L1 is connected to +5V, and the other end of D9 is grounded; C36, C37, C38, C39, C40, C41, U11, and R39 are connected in parallel with one end connected to +5V and the other end grounded; pin 1 of U12 is grounded; pin 2 and pin 4 of U12 are connected and connected to one end of C44 and C45 and to a +3.3V power supply; pin 3 of U12 is connected to one end of C42 and C43 and to a +5V power supply, and the other ends of C42 and C43 are grounded.

[0040] like Figure 8As shown, a surface acoustic wave touch screen ladder control solution and an IO expansion circuit diagram of an applicable circuit thereof, pin 1 of U18 is connected to KEY1 signal; pin 2 is connected to KEY2 signal; pin 3 is connected to KEY3 signal; pin 4 is connected to KEY4 signal; pin 5 is connected to KEY_OPEN signal; pin 6 is connected to KEY_CLOSE signal; pin 7 is connected to MOTOR signal; pin 8 is grounded; pin 11 is connected to SCK signal; pin 12 is connected to RCK signal; pin 13 is connected to one end of R101, and the other end of R101 is grounded; pin 14 is connected to SER signal; pin 15 is connected to LED_EN signal; pin 16 is connected to +5V and one end of C46 and C47, and the other end of C46 and C47 is grounded.

[0041] like Fig. 9 As shown, a lighting circuit diagram of a surface acoustic wave touch screen ladder control solution and its applicable circuit R41, LED1, LED2, LE3, LED4 are connected in series, and the other end of R41 is connected to +12V; R42, LED8, LED7, LE6, LED5 are connected in series, and the other end of R42 is connected to +12V; one end of LED4 and LED5 are connected and connected to end 1 of Q1; the other end of Q1 is grounded, the other end of Q1 is connected to one end of R43, and the other end of R43 is connected to KEY1 signal; KEY1 signal is connected to one end of R45, and the other end of R45 is grounded; R44, LED12, LED11, LE10, LED9 are connected in series, and the other end of R44 Connected to one end of Q3; R15, LED74, LED75, LE76, and LED77 are connected in series, and the other end of R15 is connected to one end of Q3; one end of LED9 and LED77 are connected and connected to 1 end of Q4; the other end of Q4 is grounded, the other end of Q4 is connected to one end of R48, and the other end of R48 is connected to KEY1 signal; KEY1 signal is connected to one end of R49, and the other end of R49 is grounded, one end of R44 and R15 are connected and connected to one end of Q3, the other end of Q3 is connected to +12V, the other end of Q3 is connected to one end of R46, and the other end of R46 is connected to LED_EN signal, LED_EN is also connected to one end of R47, and the other end of R47 is grounded.

[0042] like Fig.10As shown, a motor drive circuit diagram of a surface acoustic wave touch screen ladder control scheme and its applicable circuit, pins 2, 3 and 4 of P2 are grounded, pin 1 is connected to D10 and one end of U13.1, the other end of D10 is grounded, an additional end of U13.1 is connected to +5V, the other end of U13.1 is connected to R75 and one end of Q19, the other end of R75 is connected to +5V, the other end of Q19 is grounded, an additional end of Q19 is connected to one end of R93, the other end of R93 is connected to the MOTOR signal, and one end of R95 is connected MOTOR signal, and the other end is grounded; pins 2, 3 and 4 of P3 are grounded, pin 1 is connected to D11 and one end of U13.2, the other end of D11 is grounded, the other end of U13.2 is connected to +5V, the other end of U13.2 is connected to R96 and one end of Q20, the other end of R96 is connected to +5V, the other end of Q20 is grounded, the other end of Q20 is connected to one end of R97, the other end of R97 is connected to MOTOR signal, one end of R98 is connected to MOTOR signal, and the other end is grounded.

[0043] like Fig.11 As shown, a surface wave touch area silk screen of a surface acoustic wave touch screen elevator control solution includes an elevator door switch button and a target floor button.

[0044] like Fig.12 As shown, a software flow chart of a surface acoustic wave touch screen elevator control solution includes the following steps: Step 1: Initialize the machine before starting, COF initialization, touch screen initialization, and elevator model initialization.

[0045] Step 2: Initialize the button to unpressed state, initialize the RTC real-time clock, and initialize the temperature and humidity.

[0046] Step 3: Determine whether there is touch data. If not, continue to determine. If yes, determine whether it is pressed once or twice. Once, determine which button is pressed based on the coordinate data and the corresponding floor red light turns on. Send the corresponding floor data to the elevator model. If it is twice, cancel sending data to the elevator and the red light turns off.

[0047] Step 4: If the RFID reads the RFID card data, the data is sent.

[0048] Step 5: The elevator is on the first floor. If the key data or RFID card data is on the 2nd, 3rd, or 4th floor, the elevator goes up and the COF displays the up icon. If the key data or RFID card data is on the 1st floor, the elevator does not move and the lights go out within two seconds.

[0049] Step 6: The elevator is on the second floor. If the key data or RFID card data is on the 3rd or 4th floor, the elevator goes up and the COF displays the up icon. If the key data or RFID card data is on the 1st floor, the elevator goes down and the COF displays the down icon. If the key data or RFID card data is on the 2nd floor, the elevator does not move and the lights go out within two seconds.

[0050] Step 7: The elevator is on the third floor. If the key data or RFID card data is on the fourth floor, the elevator goes up and the COF displays the up icon. If the key data or RFID card data is on the first or second floor, the elevator goes down and the COF displays the down icon. If the key data or RFID card data is on the second floor, the elevator does not move and the lights go out within two seconds.

[0051] Step 8: The elevator is on the fourth floor. If the key data or RFID card data is on the 1st, 2nd, or 3rd floor, the elevator goes up and the COF displays the descending icon. If the key data or RFID card data is on the 2nd floor, the elevator does not move and the light goes out within two seconds.

[0052] Step 9: The elevator reaches the corresponding floor. The door opens and the COF screen displays the door opening icon and a voice prompt is given to indicate the floor has been reached. The door closes automatically within 3 seconds and the door closing icon is displayed on the COF screen. If there are other buttons or RFID card data, the elevator goes to the corresponding floor.

[0053] Step 10: Continue to determine whether there is touch data or RFID card data.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface acoustic wave touch screen ladder control scheme and its applicable circuit, characterized in that: It includes a temperature and humidity circuit, an audio circuit, an RTC circuit, an RFID circuit, a serial port circuit, a T5L COF screen circuit, an RS485 circuit, a power supply circuit, an IO expansion circuit, a lighting circuit, a motor drive circuit, a surface acoustic wave touch screen, and an elevator execution unit; the temperature and humidity circuit, the audio circuit, the RTC circuit, the RFID circuit are connected to the T5L COF screen circuit; the surface acoustic wave touch screen is connected to the T5L COF screen circuit through the serial port circuit; the elevator execution unit is connected to the T5L COF screen circuit through the RS485 circuit; the lighting circuit and the motor drive circuit are connected to the IO expansion circuit; the IO expansion circuit is connected to the T5L COF screen circuit; the power supply circuit supplies power to the humidity circuit, the audio circuit, the RTC circuit, the RFID circuit, the surface acoustic wave touch screen, the serial port circuit, the RS485 circuit, the IO expansion circuit, the lighting circuit, and the motor drive circuit.

2. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The temperature and humidity circuit includes a connector CN1; the audio circuit includes a U8 chip, resistors R9, R19, capacitor C16, capacitor C17, resistor R10, capacitor C18, resistors R11, R12, capacitors C19, C21, C20, capacitors C22, C23, resistor R13, capacitor C24, and connector P1.

3. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The RTC circuit includes a U2 chip, including capacitors C1, C2, resistors R1, R2, R3, R4, diodes D1, D2, and a backup battery U7, including capacitors C3 and C4; the RFID circuit includes a connector CN4 and two resistors R28 and R29.

4. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The surface acoustic wave touch screen refers to a module that realizes the recognition of touch actions on tempered glass by emitting and recognizing sound waves; the serial port circuit includes a connector CN2 and two resistors R6 and R5; the T5L COF screen circuit includes a connector U1 and resistors R99, R100, R104, R106, R107, R108, R109, R110, R111, R17, R114, R115, R116, and R117.

5. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The RS485 circuit includes a chip U5, a resistor R26, a diode U9, resistors R40 and R14, a capacitor C7, resistors R25, R27, R20, R21 and R24, and TVS tubes D5 and D6; the elevator execution unit refers to an elevator operation unit other than the elevator control, and the operation of the elevator is realized through the elevator execution unit.

6. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The IO expansion circuit includes a U18 chip, capacitors C46 and C47, and a resistor R101; the lighting circuit includes resistors R41, R42, R43, R45, R44, R15, R46, R47, R48, and R49, LED lights LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED74, LED75, LED76, and LED77, and transistors Q1, Q3, and Q4.

7. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The motor drive circuit includes connectors P2 and P3, MOS tubes U13.1 and U13.2, diodes D10 and D11, resistors R75, R93, R95, R96, R97, R98, and transistors Q19 and Q20.

8. A surface acoustic wave touch screen ladder control scheme and its applicable circuit according to claim 1, characterized in that: The power supply circuit includes a U10 chip, resistors R30, R31, R32, R33, R34, R37, R35, R36, R37, R39, R38, capacitors C8, C29, C31, C30, C34, C32, C33, C35, C36, C37, C38, C39, C40, C41, diodes D7, U11, D9, D8, inductor L1, connector J1, and also includes U12 and capacitors C42, C43, C44, C45.