A communication system based on multi-communication interface for display and control integrated screen

Abstract

The utility model discloses a kind of display control integrated screen communication systems based on multiple communication interfaces, including main control module, touch screen module, communication module and power module, main control module is connected with touch screen module, communication module, power module electricity respectively, power module is connected with touch screen module, communication module electricity respectively;Communication module includes RS232 communication circuit, CAN communication circuit, RS485 communication circuit and USB communication circuit.The utility model integrates RS232, RS485, CAN, USB and multiple communication interfaces, can be connected and data interaction with external device with different interface standard and communication protocol, greatly improve the compatibility of system, suitable for industrial control, intelligent device, automobile electronics and multiple fields.

Description

Technical Field

[0001] This utility model relates to the field of communication system technology, specifically to a display and control integrated screen communication system based on multiple communication interfaces. Background Technology

[0002] The application of integrated display and control screens is becoming increasingly widespread in modern industrial control, medical control, and intelligent equipment.

[0003] Integrated display and control screens combine display and control functions, facilitating convenient human-computer interaction. However, current integrated display and control screen communication systems suffer from problems such as limited communication interfaces and poor compatibility. For example, many integrated display and control screens are equipped with only a few communication interfaces, failing to meet the diverse communication needs of different devices. When connecting and exchanging data with devices that have different communication protocols and interface standards, existing integrated display and control screen communication systems often struggle to achieve efficient and stable communication, severely limiting the application scope and functional expansion of integrated display and control screens.

[0004] Therefore, there is an urgent need to design a display and control integrated screen communication system with multiple communication interfaces and high compatibility, so as to expand the scope of application to multiple fields such as industrial control, intelligent devices, and automotive electronics. Utility Model Content

[0005] This utility model improves the compatibility and versatility of the communication system by integrating multiple communication interfaces such as RS232, RS485, CAN, and USB, meeting the diverse communication needs between different devices, and achieving efficient and stable data transmission and human-computer interaction. Specifically, the following technical solutions are proposed:

[0006] This utility model embodiment provides a display and control integrated screen communication system based on multiple communication interfaces, including a main control module, a touch screen module, a communication module and a power supply module. The main control module is electrically connected to the touch screen module, the communication module and the power supply module respectively, and the power supply module is electrically connected to the touch screen module and the communication module respectively.

[0007] The communication module includes an RS232 communication circuit, a CAN communication circuit, an RS485 communication circuit, and a USB communication circuit. The RS232 communication circuit is electrically connected to the power supply module and the main control module. The CAN communication circuit is electrically connected to the power supply module and the main control module. The RS485 communication circuit is electrically connected to the power supply module and the main control module. The USB communication circuit is electrically connected to the power supply module and the main control module.

[0008] Furthermore, the power module includes a 5V conversion circuit, a 3.3V conversion circuit, and a 5V isolation circuit. The 5V conversion circuit is electrically connected to the 3.3V conversion circuit, the 5V isolation circuit, the USB communication circuit, and the main control module. The 3.3V conversion circuit is electrically connected to the CAN communication circuit, the RS232 communication circuit, the RS485 communication circuit, and the touch screen module. The 5V isolation circuit is electrically connected to the RS485 communication circuit.

[0009] Furthermore, the 5V conversion circuit includes a power conversion chip U2. The first pin of U2 is electrically connected to the first terminal of resistor R38. The second terminal of resistor R38 is electrically connected to the first terminals of resistors R39 and R40. The second terminal of resistor R40 is grounded. The second terminal of resistor R39 is electrically connected to the first terminal of ferrite bead FB2. The second pin of U2 is grounded through capacitor C22. The second pin of U2 is also electrically connected to the eighth pin through resistor R37. The third pin of U2 is electrically connected to VDD_24V through resistor R35. The third pin of U2 is grounded through resistor R36 and capacitor C20. The fourth pin of U2 is connected to the eighth pin through resistor R34 and capacitor C20. The first terminal of U16 is electrically connected, the fifth pin of U2 is grounded, the sixth pin of U2 is electrically connected to the second terminal of capacitor C16 and the first terminal of inductor L2, the second terminal of inductor L2 is electrically connected to the first terminals of capacitors C17, C18, and C21 and the first terminal of ferrite bead FB2, the second terminals of capacitors C17, C18, and C21 are grounded, the second terminal of ferrite bead FB2 is electrically connected to VDD_5V and the first terminal of capacitor C19, the second terminal of capacitor C19 is grounded, the seventh pin of U2 is electrically connected to VDD_24V, and the seventh pin of U2 is grounded through capacitors C14 and C15 respectively.

[0010] Furthermore, the 3.3V conversion circuit includes a power conversion chip U3. The first pin of U3 is electrically connected to VDD_5V through resistor R46. The second pin of U3 is grounded through capacitor C32. The first pin of U3 is grounded. The third pin of U3 is electrically connected to the first terminal of inductor L3. The second terminal of inductor L3 is electrically connected to the first terminal of ferrite bead FB3, the first terminal of capacitor C34, and the first terminal of resistor R47. The second terminal of ferrite bead FB3 is electrically connected to VDD_5V. The second terminal of ferrite bead FB3 is grounded through capacitor C35. The second terminal of capacitor C34 is grounded. The fourth pin of U3 is electrically connected to VDD_5V. The fourth pin of U3 is grounded through capacitors C36 and C37 respectively. The fifth pin of U3 is electrically connected to the second terminal of resistor R47 and the first terminal of resistor R48. The second terminal of resistor R48 is grounded.

[0011] Furthermore, the 5V isolation circuit includes an isolation power supply module U19, and the output of the 5V isolation circuit is 5V_ISO.

[0012] Furthermore, the touchscreen module includes an interface J9, and the main control module includes a main control chip U4. The first and second pins of J9 are electrically connected to VDD_5V, and the fourth and fifth pins of J9 are connected to...

[0013] VDD_3V3 is electrically connected. Pins 3, 12, 18, 24, 33, 51, and 52 of J9 are grounded. Pin 17 of J9 is electrically connected to pin B32 of U4. Pin 20 of J9 is electrically connected to pin A47 of U4. Pin 21 of J9 is electrically connected to pin A49 of U4. Pin 22 of J9 is electrically connected to pin A48 of U4. Pin 23 of J9 is electrically connected to pin A50 of U4. Pin 25 of J9 is electrically connected to pin A37 of U4. Pin 20 of J9... Pin 6 is electrically connected to pin A38 of U4; pin 27 of J9 is electrically connected to pin A39 of U4; pin 28 of J9 is electrically connected to pin A40 of U4; pin 29 of J9 is electrically connected to pin A41 of U4; pin 30 of J9 is electrically connected to pin A42 of U4; pin 31 of J9 is electrically connected to pin A43 of U4; pin 32 of J9 is electrically connected to pin A44 of U4; pin 34 of J9 is electrically connected to pin A29 of U4; pin 35 of J9 is electrically connected to pin A30 of U4; pin 30 of J9 is electrically connected to pin A38 of U4; pin 27 of J9 is electrically connected to pin A39 of U4; pin 28 of J9 is electrically connected to pin A40 of U4; pin 29 of J9 is electrically connected to pin A41 of U4; pin 30 of J9 is electrically connected to pin A42 of U4; pin 31 of J9 is electrically connected to pin A43 of U4; pin 32 of J9 is electrically connected to pin A44 of U4; pin 34 of J9 is electrically connected to pin A29 of U4; pin 35 of J9 is electrically connected to pin A30 of U4; pin 36 of J9 is electrically connected to pin A38 of U4; pin 37 of J9 is electrically connected to pin A39 of U4; pin 36 of J9 is electrically connected to pin A39 ...6 of J9 is electrically connected to pin A39 of U4; pin 36 of J9 is electrically connected to pin A39 of U4; pin Pin 6 is electrically connected to pin A31 of U4; pin 37 of J9 is electrically connected to pin A32 of U4; pin 38 of J9 is electrically connected to pin A33 of U4; pin 39 of J9 is electrically connected to pin A34 of U4; pin 40 of J9 is electrically connected to pin A35 of U4; pin 11 of J9 is electrically connected to pin A36 of U4; pin 43 of J9 is electrically connected to pin A21 of U4; pin 44 of J9 is electrically connected to pin A22 of U4; pin 45 of J9 is electrically connected to pin A25 of U4; pin 46 of J9... Pin 47 of J9 is electrically connected to pin A26 of U4, pin 48 of J9 is electrically connected to pin A28 of U4, pin 49 of J9 is electrically connected to pin A23 of U4, pin 50 of J9 is electrically connected to pin A24 of the main control chip U4 in the main control module, pins A19, A20, A45, A46, A52, A77, A79, B30, B31, B44, and B59 of U4 are grounded, and pin A80 is electrically connected to VDD_5V.

[0014] Furthermore, the RS232 communication circuit includes an RS232 conversion chip U16. The first pin of U16 is electrically connected to the third pin via capacitor C84. The second pin of U16 is grounded via capacitor C85. The fourth pin of U16 is electrically connected to the fifth pin via capacitor C86. The sixth pin of U16 is grounded via capacitor C87. The seventh pin of U16 is electrically connected to the second pin of connector J8 via resistor R123 and ferrite bead FB9. The eighth pin of U16 is electrically connected to the first pin of connector J8 via resistor R124 and ferrite bead FB11. The ninth pin of U16 is connected to pin B50 of U4. Electrical connections: Pin 10 of U16 is electrically connected to pin B49 of U4; pin 11 of U16 is electrically connected to pin B47 of U4; pin 12 of U16 is electrically connected to pin B48 of U4; pin 13 of U16 is electrically connected to pin 3 of connector J8 via resistor R122 and ferrite bead FB10; pin 14 of U16 is electrically connected to pin 4 of connector J8 via resistor R121 and ferrite bead FB8; pin 5 of J8 is grounded; pin 15 of U16 is grounded; pin 16 of U16 is electrically connected to VDD_3V3; pin 16 of U16 is grounded via capacitor C83.

[0015] Furthermore, the CAN communication circuit includes a CAN conversion chip U9. Pins 1, 3, 7, 9, 10, 11, 13, 16, 18, and 20 of U9 are grounded. Pin 4 of U9 is electrically connected to pin B8 of U4, pin 5 of U9 is electrically connected to pin B7 of U4, and pins 6 and 8 of U9 are...

[0016] VDD_3V3 is electrically connected. Pin 8 of U9 is grounded via capacitors C49, C52, C53, and ESD protection diode D13. Pin 12 of U9 is grounded via capacitors C50 and C51. Pin 19 of U9 is grounded via capacitor C48. Pin 15 of U9 is electrically connected to the fourth terminal of common-mode filter L4. Pin 17 of U9 is electrically connected to the first terminal of common-mode filter L4. The second terminal of common-mode filter L4 is electrically connected to the first terminals of diodes D8 and D9, and the first terminal of resettable fuse F2. The third terminal of common-mode filter L4 is electrically connected to the first terminal of diode D11 and diode D... The first terminal of diode D2 is electrically connected to the first terminal of resettable fuse F3. The second terminal of diode D8 is electrically connected to the first terminal of electrostatic protection diode D10 and the second terminal of diode D11. The second terminal of diode D9 is electrically connected to the second terminal of electrostatic protection diode D10 and the second terminal of diode D12. The second terminal of diode D8 is grounded through diode D15. The second terminal of diode D9 is grounded through diode D14. The second terminal of resettable fuse F2 is electrically connected to connector J5. The second terminal of resettable fuse F3 is electrically connected to connector J5. The second terminal of resettable fuse F2 is electrically connected to the second terminal of resettable fuse F3 through resistor R68.

[0017] Furthermore, the RS485 communication circuit includes an RS485 conversion chip U21. The first pin of U21 is electrically connected to the third pin of optocoupler U20. The second and third pins of U21 are electrically connected to 5V_ISO via resistor R148. The fourth pin of U21 is electrically connected to the fifth pin of optocoupler U22. The fifth pin of U21 is grounded. The sixth pin of U21 is grounded via capacitor C117. The sixth pin of U21 is electrically connected to the fourth pin of common-mode filter L7. The seventh pin of U21 is grounded via capacitor C118. The seventh pin of U21 is electrically connected to the first pin of common-mode filter L7. The second pin of common-mode filter L7 is grounded via electrostatic discharge protection diode D27. The second pin of common-mode filter L7 is connected via a self-recovery diode. The resettable fuse F7 is electrically connected to the first pin of connector J20. The third pin of common mode filter L7 is grounded through electrostatic discharge protection diode D26. The third pin of common mode filter L7 is electrically connected to the second pin of connector J20 through resettable fuse F6. The third pin of common mode filter L7 is electrically connected to the second pin through electrostatic discharge protection diode D25. The eighth pin of U21 is grounded through electrostatic discharge protection diode D24, capacitor C115, and capacitor C116 respectively. The eighth pin of U21 is electrically connected to 5V_ISO. 5V_ISO is electrically connected to the third pin of DIP switch S3 through resistor R140. The sixth pin of DIP switch S3 is grounded through resistor R144. The third pin of DIP switch S3 is electrically connected to the sixth pin through resistor R142.

[0018] The first pin of optocoupler U20 is electrically connected to 5V_ISO through resistor R143. The fourth pin of optocoupler U20 is grounded. The fifth pin of optocoupler U20 is electrically connected to pin B54 of U4. The fifth pin of optocoupler U20 is electrically connected to VDD_3V3 through resistor R141. The sixth pin of optocoupler U20 is electrically connected to VDD_3V3. The first pin of optocoupler U22 is electrically connected to VDD_3V3 through resistor R146. The third pin of optocoupler U22 is electrically connected to pin B53 of U4. The fourth pin of optocoupler U22 is grounded. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO through resistor R147. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO.

[0019] Furthermore, the USB communication circuit includes a common-mode filter L6. The first pin of the common-mode filter L6 is electrically connected to the B28 pin of U4, the fourth pin of the common-mode filter L6 is electrically connected to the B26 pin of U4, the second and third pins of the common-mode filter L6 are grounded through the electrostatic protection diode D17, the second pin of the common-mode filter L6 is electrically connected to the third pin of connector J7, the third pin of the common-mode filter L6 is electrically connected to the second pin of connector J7, the first pin of connector J7 is electrically connected to VDD_5V, and the fourth and fifth pins of connector J7 are grounded.

[0020] Beneficial effects:

[0021] 1) The integrated display and control screen communication system based on multiple communication interfaces provided by this utility model integrates...

[0022] With multiple communication interfaces such as RS232, RS485, CAN, and USB, it can connect and exchange data with external devices with different interface standards and communication protocols, greatly improving system compatibility and making it suitable for various fields such as industrial control, intelligent devices, and automotive electronics.

[0023] 2) The integrated display and control screen communication system based on multiple communication interfaces provided by this utility model can realize data transmission and control with various external devices by integrating multiple communication interfaces. Combined with the display and control functions of the integrated display and control screen module, it provides users with a richer and more convenient operating experience and meets the diverse needs of different users.

[0024] 3) The integrated display and control screen communication system based on multiple communication interfaces provided by this utility model adopts mature communication protocols and circuit designs for each communication interface module. Combined with a high-performance main control module, it can ensure the stability and accuracy of data during transmission and reduce data loss and errors.

[0025] 4) The integrated display and control screen communication system based on multiple communication interfaces provided by this utility model adopts a modular design, which makes the modules have good scalability. Users can expand and upgrade the system according to actual needs, such as adding new communication interface modules or replacing the main control module with a better performance. Attached Figure Description

[0026] Figure 1 A structural block diagram of the communication system provided in this embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the 5V conversion circuit provided in this embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the 3.3V conversion circuit provided in this embodiment of the utility model;

[0029] Figure 4 A schematic diagram of a touch screen module provided in an embodiment of this utility model;

[0030] Figure 5 A schematic diagram of the main control module provided in an embodiment of this utility model;

[0031] Figure 6 A schematic diagram of the RS232 communication circuit provided for an embodiment of this utility model;

[0032] Figure 7 A schematic diagram of the CAN communication circuit provided in an embodiment of this utility model;

[0033] Figure 8 A schematic diagram of the RS485 communication circuit provided for an embodiment of this utility model;

[0034] Figure 9 A schematic diagram of a USB communication circuit provided in an embodiment of this utility model. Detailed Implementation

[0035] The present solution will now be described in conjunction with the accompanying drawings and specific embodiments.

[0036] Figure 1 The structural block diagram of the communication system provided in this embodiment of the utility model includes a main control module, a touch screen module, a communication module and a power supply module. The main control module is electrically connected to the touch screen module, the communication module and the power supply module respectively, and the power supply module is electrically connected to the touch screen module and the communication module respectively.

[0037] The communication module includes an RS232 communication circuit, a CAN communication circuit, an RS485 communication circuit, and a USB communication circuit. The RS232 communication circuit is electrically connected to the power supply module and the main control module. The CAN communication circuit is electrically connected to the power supply module and the main control module. The RS485 communication circuit is electrically connected to the power supply module and the main control module. The USB communication circuit is electrically connected to the power supply module and the main control module.

[0038] The power module includes a 5V conversion circuit, a 3.3V conversion circuit, and a 5V isolation circuit. The 5V conversion circuit is electrically connected to the 3.3V conversion circuit, the 5V isolation circuit, the USB communication circuit, and the main control module. The 3.3V conversion circuit is electrically connected to the CAN communication circuit, the RS232 communication circuit, the RS485 communication circuit, and the touch screen module. The 5V isolation circuit is electrically connected to the RS485 communication circuit.

[0039] Figure 2 This is a schematic diagram of a 5V conversion circuit provided in an embodiment of the present invention. The 5V conversion circuit includes a power conversion chip U2. The first pin of U2 is electrically connected to the first end of resistor R38. The second end of resistor R38 is electrically connected to the first ends of resistors R39 and R40. The second end of resistor R40 is grounded. The second end of resistor R39 is electrically connected to the first end of ferrite bead FB2. The second pin of U2 is grounded through capacitor C22. The second pin of U2 is electrically connected to the eighth pin through resistor R37. The third pin of U2 is electrically connected to VDD_24V through resistor R35. The third pin of U2 is grounded through resistor R36 and capacitor C20 respectively. The fourth pin of U2 is... Resistor R34 is electrically connected to the first terminal of capacitor C16. The fifth pin of U2 is grounded. The sixth pin of U2 is electrically connected to the second terminal of capacitor C16 and the first terminal of inductor L2. The second terminal of inductor L2 is electrically connected to the first terminals of capacitors C17, C18, and C21, and the first terminal of ferrite bead FB2. The second terminals of capacitors C17, C18, and C21 are grounded. The second terminal of ferrite bead FB2 is electrically connected to VDD_5V and the first terminal of capacitor C19. The second terminal of capacitor C19 is grounded. The seventh pin of U2 is electrically connected to VDD_24V. The seventh pin of U2 is grounded through capacitors C14 and C15.

[0040] The power conversion chip U2 is model MP9943GQ-Z. The power conversion chip U2 is a high-efficiency, 3A peak current, 36V synchronous step-down chip. The 5V conversion circuit built with it can effectively step down the voltage. The output voltage Vout = Vref * (1 + R39 / R40) (Vref = 0.792V in this embodiment).

[0041] Figure 3The schematic diagram of the 3.3V conversion circuit provided in this embodiment of the utility model is shown. The 3.3V conversion circuit includes a power conversion chip U3. The first pin of U3 is electrically connected to VDD_5V through resistor R46. The second pin of U3 is grounded through capacitor C32. The third pin of U3 is electrically connected to the first end of inductor L3. The second end of inductor L3 is electrically connected to the first end of ferrite bead FB3, the first end of capacitor C34, and the first end of resistor R47. The second end of ferrite bead FB3 is electrically connected to VDD_5V. The second end of ferrite bead FB3 is grounded through capacitor C35. The second end of capacitor C34 is grounded. The fourth pin of U3 is electrically connected to VDD_5V. The fourth pin of U3 is grounded through capacitors C36 and C37 respectively. The fifth pin of U3 is electrically connected to the second end of resistor R47 and the first end of resistor R48. The second end of resistor R48 is grounded.

[0042] The power conversion chip U3 is model TLV62565DBVR. The power conversion chip U3 is a 1.5A high-efficiency synchronous buck converter. This device has adaptive turn-on time current control, light load power saving mode, 50uA operating quiescent current, 95% maximum duty cycle and excellent AC and transient load response. The output voltage Vout = Vref * (1 + R47 / R48) (Vref = 0.6V in this embodiment).

[0043] The 5V isolation circuit includes the isolation power supply module U19, and the output of the 5V isolation circuit is 5V_ISO.

[0044] In this embodiment of the utility model, the isolated power supply module U19 is model B0505S-1WR3. The isolated power supply module U19 is a DC / DC module power supply product with constant voltage input and isolated unregulated single-channel output; output voltage 5V, output current 200mA, output power 1W; conversion efficiency 86%; low quiescent current, low ripple coefficient and low noise, ultra-low power consumption; continuous short circuit protection for output with self-recovery function.

[0045] Figure 4 This is a schematic diagram of a touch screen module provided in an embodiment of the present invention. Figure 5The schematic diagram of the main control module provided by this utility model shows that the touch screen module includes an interface J9, and the main control module includes a main control chip U4. The first and second pins of J9 are electrically connected to VDD_5V, the fourth and fifth pins of J9 are electrically connected to VDD_3V3, and the third, twelfth, eighteenth, twenty-fourth, thirty-third, fifty-first, and fifty-second pins of J9 are grounded. The seventeenth pin of J9 is electrically connected to the B32 pin of U4, the twentieth pin of J9 is electrically connected to the A47 pin of U4, the twenty-first pin of J9 is electrically connected to the A49 pin of U4, and the twenty-second pin of J9 is electrically connected to the U4... Pin A48 is electrically connected; pin 23 of J9 is electrically connected to pin A50 of U4; pin 25 of J9 is electrically connected to pin A37 of U4; pin 26 of J9 is electrically connected to pin A38 of U4; pin 27 of J9 is electrically connected to pin A39 of U4; pin 28 of J9 is electrically connected to pin A40 of U4; pin 29 of J9 is electrically connected to pin A41 of U4; pin 30 of J9 is electrically connected to pin A42 of U4; pin 31 of J9 is electrically connected to pin A43 of U4; pin 32 of J9 is electrically connected to pin A44 of U4; pin 34 of J9 is electrically connected to pin U4... Pin A29 of J9 is electrically connected to U4; pin 35 of J9 is electrically connected to pin A30 of U4; pin 36 of J9 is electrically connected to pin A31 of U4; pin 37 of J9 is electrically connected to pin A32 of U4; pin 38 of J9 is electrically connected to pin A33 of U4; pin 39 of J9 is electrically connected to pin A34 of U4; pin 40 of J9 is electrically connected to pin A35 of U4; pin 11 of J9 is electrically connected to pin A36 of U4; pin 43 of J9 is electrically connected to pin A21 of U4; pin 44 of J9 is electrically connected to pin A22 of U4; pin 45 of J9 is electrically connected to... Pin A25 of U4 is electrically connected. Pin 46 of J9 is electrically connected to pin A26 of U4. Pin 47 of J9 is electrically connected to pin A27 of U4. Pin 48 of J9 is electrically connected to pin A28 of U4. Pin 49 of J9 is electrically connected to pin A23 of U4. Pin 50 of J9 is electrically connected to pin A24 of the main control chip U4 in the main control module. Pins A19, A20, A45, A46, A52, A77, A79, B30, B31, B44, and B59 of U4 are grounded. Pin A80 is electrically connected to VDD_5V.

[0046] In this embodiment of the invention, the main control core board U4 is model M6G2C. The main control core board U4 is an industrial control core board that adopts Freescale... The processor features an A7 528MHz clock speed and an advanced power management architecture for lower power consumption. It comes standard with 8 UART ports, 2 USB OTG ports, and 2 USB 4.5T ports.

[0047] It features interfaces such as CAN-Bus and 2 Ethernet ports, and comes pre-installed with the AWorksOS industrial intelligent IoT development platform, designed for applications in intelligent hardware and industrial IoT.

[0048] Figure 6 This is a schematic diagram of an RS232 communication circuit provided in an embodiment of the present invention. The RS232 communication circuit includes an RS232 conversion chip U16. The first pin of U16 is electrically connected to the third pin through capacitor C84. The second pin of U16 is grounded through capacitor C85. The fourth pin of U16 is electrically connected to the fifth pin through capacitor C86. The sixth pin of U16 is grounded through capacitor C87. The seventh pin of U16 is electrically connected to the second pin of connector J8 through resistor R123 and ferrite bead FB9. The eighth pin of U16 is electrically connected to the first pin of connector J8 through resistor R124 and ferrite bead FB11. The ninth pin of U16... The U16 pin is electrically connected to pin B50 of U4. The 10th pin of U16 is electrically connected to pin B49 of U4. The 11th pin of U16 is electrically connected to pin B47 of U4. The 12th pin of U16 is electrically connected to pin B48 of U4. The 13th pin of U16 is electrically connected to the 3rd pin of connector J8 after passing through resistor R122 and ferrite bead FB10. The 14th pin of U16 is electrically connected to the 4th pin of connector J8 after passing through resistor R121 and ferrite bead FB8. The 5th pin of J8 is grounded. The 15th pin of U16 is grounded. The 16th pin of U16 is electrically connected to VDD_3V3. The 16th pin of U16 is grounded through capacitor C83.

[0049] In this embodiment of the present invention, the RS232 conversion chip U16 is model SIPEX 3232EE, which is an RS-232 transceiver conforming to the EIA / TIA-232 standard. This chip has a high-efficiency charge pump power supply and supports power supply voltages from 3.0V to 5.5V.

[0050] Figure 7This is a schematic diagram of a CAN communication circuit provided in an embodiment of the present invention. The CAN communication circuit includes a CAN conversion chip U9. Pins 1, 3, 7, 9, 10, 11, 13, 16, 18, and 20 of U9 are grounded. Pin 4 of U9 is electrically connected to pin B8 of U4. Pin 5 of U9 is electrically connected to pin B7 of U4. Pins 6 and 8 of U9 are electrically connected to VDD_3V3. Pin 8 of U9 is grounded through capacitors C49, C52, C53, and an electrostatic discharge protection diode D13. Pin 12 of U9 is grounded through capacitors C50 and C51. Pin 19 of U9 is grounded through capacitor C48. Pin 15 of U9 is electrically connected to the fourth terminal of a common-mode filter L4. Pin 17 of U9 is electrically connected to the first terminal of the common-mode filter L4. The second terminal of the common-mode filter L4 is electrically connected to the first terminals of diodes D8 and D9 and the first terminal of the resettable fuse F2. The third terminal of the common-mode filter L4 is electrically connected to the first terminals of diodes D11 and D12 and the first terminal of the resettable fuse F3. The second terminal of diode D8 is electrically connected to the first terminals of electrostatic protection diodes D10 and D11. The second terminal of diode D9 is electrically connected to the second terminals of electrostatic protection diodes D10 and D12. The second terminal of diode D8 is grounded through diode D15, and the second terminal of diode D9 is grounded through diode D14. The second terminal of the resettable fuse F2 is electrically connected to connector J5, the second terminal of the resettable fuse F3 is electrically connected to connector J5, and the second terminal of the resettable fuse F2 is electrically connected to the second terminal of the resettable fuse F3 through resistor R68.

[0051] In this embodiment of the utility model, the CAN conversion chip U9 is model SM1300H, which is a conversion chip that conforms to the ISO 11898-2 standard, has an isolation withstand voltage of up to 5000VDC, supports CAN FD, has a maximum speed of 5Mbps, and has extremely low electromagnetic radiation and high electromagnetic interference resistance.

[0052] Figure 8This is a schematic diagram of an RS485 communication circuit provided in an embodiment of the present invention. The RS485 communication circuit includes an RS485 conversion chip U21. The first pin of U21 is electrically connected to the third pin of optocoupler U20. The second and third pins of U21 are electrically connected to 5V_ISO through resistor R148. The fourth pin of U21 is electrically connected to the fifth pin of optocoupler U22. The fifth pin of U21 is grounded. The sixth pin of U21 is grounded through capacitor C117. The sixth pin of U21 is electrically connected to the fourth pin of common-mode filter L7. The seventh pin of U21 is grounded through capacitor C118. The seventh pin of U21 is electrically connected to the first pin of common-mode filter L7. The second pin of common-mode filter L7 is grounded through electrostatic discharge protection diode D27. The second pin of U21 is electrically connected to the first pin of connector J20 through resettable fuse F7. The third pin of common mode filter L7 is grounded through electrostatic discharge protection diode D26. The third pin of common mode filter L7 is electrically connected to the second pin of connector J20 through resettable fuse F6. The third pin of common mode filter L7 is electrically connected to the second pin through electrostatic discharge protection diode D25. The eighth pin of U21 is grounded through electrostatic discharge protection diode D24, capacitor C115, and capacitor C116 respectively. The eighth pin of U21 is electrically connected to 5V_ISO. 5V_ISO is electrically connected to the third pin of DIP switch S3 through resistor R140. The sixth pin of DIP switch S3 is grounded through resistor R144. The third pin of DIP switch S3 is electrically connected to the sixth pin through resistor R142.

[0053] The first pin of optocoupler U20 is electrically connected to 5V_ISO through resistor R143. The fourth pin of optocoupler U20 is grounded. The fifth pin of optocoupler U20 is electrically connected to pin B54 of U4. The fifth pin of optocoupler U20 is electrically connected to VDD_3V3 through resistor R141. The sixth pin of optocoupler U20 is electrically connected to VDD_3V3. The first pin of optocoupler U22 is electrically connected to VDD_3V3 through resistor R146. The third pin of optocoupler U22 is electrically connected to pin B53 of U4. The fourth pin of optocoupler U22 is grounded. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO through resistor R147. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO.

[0054] In this embodiment of the utility model, the RS485 conversion chip U21 is model MAX13487EESA+T, which is a half-duplex, high data rate RS-485 / RS-422 compatible transceiver with automatic direction control function.

[0055] Figure 9The schematic diagram of the USB communication circuit provided in this embodiment of the present invention is shown. The USB communication circuit includes a common-mode filter L6. The first pin of the common-mode filter L6 is electrically connected to the B28 pin of U4, the fourth pin of the common-mode filter L6 is electrically connected to the B26 pin of U4, the second and third pins of the common-mode filter L6 are grounded through the electrostatic protection diode D17, the second pin of the common-mode filter L6 is electrically connected to the third pin of connector J7, the third pin of the common-mode filter L6 is electrically connected to the second pin of connector J7, the first pin of connector J7 is electrically connected to VDD_5V, and the fourth and fifth pins of connector J7 are grounded.

[0056] In this embodiment of the utility model, the implementation principle of the communication system is as follows:

[0057] First, based on the equipment's operating status, a communication system is built. The main control module, as the core of the entire communication system, is used to control and process data from various modules such as the PLC, camera, USB flash drive, analog input / output modules, etc. The main control module is connected to the RS232, RS485, CAN, USB communication interfaces, and the touchscreen module via data transmission lines. The main control module receives data from the RS232, RS485, CAN, and USB communication interfaces, processes the data according to a preset program, and then sends the processed data to the touchscreen module for display. Simultaneously, the main control module parses the control commands transmitted from the touchscreen module and controls the corresponding communication interface modules to interact with external devices according to the command requirements. The main control module uses a high-performance microprocessor, possessing powerful data processing capabilities and a fast response speed, ensuring efficient and stable system operation.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-communication interface-based communication system for a display and control integrated screen, characterized in that, The system includes a main control module, a touch screen module, a communication module, and a power supply module. The main control module is electrically connected to the touch screen module, the communication module, and the power supply module, respectively. The power supply module is electrically connected to the touch screen module and the communication module, respectively. The communication module includes an RS232 communication circuit, a CAN communication circuit, an RS485 communication circuit, and a USB communication circuit. The RS232 communication circuit is electrically connected to the power supply module and the main control module. The CAN communication circuit is electrically connected to the power supply module and the main control module. The RS485 communication circuit is electrically connected to the power supply module and the main control module. The USB communication circuit is electrically connected to the power supply module and the main control module.

2. The multi-communication interface based control-display integrated screen communication system according to claim 1, wherein, The power module includes a 5V conversion circuit, a 3.3V conversion circuit, and a 5V isolation circuit. The 5V conversion circuit is electrically connected to the 3.3V conversion circuit, the 5V isolation circuit, the USB communication circuit, and the main control module. The 3.3V conversion circuit is electrically connected to the CAN communication circuit, the RS232 communication circuit, the RS485 communication circuit, and the touch screen module. The 5V isolation circuit is electrically connected to the RS485 communication circuit.

3. The multi-communication interface based control-display integrated screen communication system according to claim 2, wherein, The 5V conversion circuit includes a power conversion chip U2. The first pin of U2 is electrically connected to the first terminal of resistor R38. The second terminal of resistor R38 is electrically connected to the first terminals of resistors R39 and R40. The second terminal of resistor R40 is grounded. The second terminal of resistor R39 is electrically connected to the first terminal of ferrite bead FB2. The second pin of U2 is grounded through capacitor C22. The second pin of U2 is electrically connected to the eighth pin through resistor R37. The third pin of U2 is electrically connected to VDD_24V through resistor R35. The third pin of U2 is grounded through resistor R36 and capacitor C20. The fourth pin of U2 is connected to capacitor C16 through resistor R34. The first terminal of U2 is electrically connected, the fifth pin of U2 is grounded, the sixth pin of U2 is electrically connected to the second terminal of capacitor C16 and the first terminal of inductor L2, the second terminal of inductor L2 is electrically connected to the first terminals of capacitors C17, C18, and C21 and the first terminal of ferrite bead FB2, the second terminals of capacitors C17, C18, and C21 are grounded, the second terminal of ferrite bead FB2 is electrically connected to VDD_5V and the first terminal of capacitor C19, the second terminal of capacitor C19 is grounded, the seventh pin of U2 is electrically connected to VDD_24V, and the seventh pin of U2 is grounded through capacitors C14 and C15 respectively.

4. The multi-communication interface based control-display integrated screen communication system according to claim 3, wherein, The 3.3V conversion circuit includes a power conversion chip U3. The first pin of U3 is electrically connected to VDD_5V through resistor R46. The second pin of U3 is grounded through capacitor C32. The first pin of U3 is grounded. The third pin of U3 is electrically connected to the first terminal of inductor L3. The second terminal of inductor L3 is electrically connected to the first terminal of ferrite bead FB3, the first terminal of capacitor C34, and the first terminal of resistor R47. The second terminal of ferrite bead FB3 is electrically connected to VDD_5V. The second terminal of ferrite bead FB3 is grounded through capacitor C35. The second terminal of capacitor C34 is grounded. The fourth pin of U3 is electrically connected to VDD_5V. The fourth pin of U3 is grounded through capacitors C36 and C37. The fifth pin of U3 is electrically connected to the second terminal of resistor R47 and the first terminal of resistor R48. The second terminal of resistor R48 is grounded.

5. The multi-communication interface based control-display integrated screen communication system according to claim 4, wherein, The touchscreen module includes an interface J9, and the main control module includes a main control chip U4. Pins 1 and 2 of J9 are electrically connected to VDD_5V, pins 4 and 5 of J9 are electrically connected to VDD_3V3, and pins 3, 12, 18, 24, 33, 51, and 52 of J9 are grounded. Pin 17 of J9 is electrically connected to pin B32 of U4, pin 20 of J9 is electrically connected to pin A47 of U4, pin 21 of J9 is electrically connected to pin A49 of U4, and pin 22 of J9 is electrically connected to pin A48 of U4. Pin 23 of J9 is electrically connected to pin A50 of U4; pin 25 of J9 is electrically connected to pin A37 of U4; pin 26 of J9 is electrically connected to pin A38 of U4; pin 27 of J9 is electrically connected to pin A39 of U4; pin 28 of J9 is electrically connected to pin A40 of U4; pin 29 of J9 is electrically connected to pin A41 of U4; pin 30 of J9 is electrically connected to pin A42 of U4; pin 31 of J9 is electrically connected to pin A43 of U4; pin 32 of J9 is electrically connected to pin A44 of U4; and pin 34 of J9 is electrically connected to pin A29 of U4. Electrical connections: Pin 35 of J9 is electrically connected to pin A30 of U4; pin 36 of J9 is electrically connected to pin A31 of U4; pin 37 of J9 is electrically connected to pin A32 of U4; pin 38 of J9 is electrically connected to pin A33 of U4; pin 39 of J9 is electrically connected to pin A34 of U4; pin 40 of J9 is electrically connected to pin A35 of U4; pin 11 of J9 is electrically connected to pin A36 of U4; pin 43 of J9 is electrically connected to pin A21 of U4; pin 44 of J9 is electrically connected to pin A22 of U4; pin 45 of J9 is electrically connected to pin A30 of U4; pin 6 of J9 is electrically connected to pin A30 of U4; pin 7 of J9 is electrically connected to pin A31 of U4; pin 8 of J9 is electrically connected to pin A32 of U4; pin 9 of J9 is electrically connected to pin A33 of U4; pin 10 of J9 is electrically connected to pin A34 of U4; pin 11 of J9 is electrically connected to pin A36 of U4; pin 12 of J9 is electrically connected to pin A33 of U4; pin 13 of J9 is electrically connected to pin A34 of U4; pin 14 of J9 is electrically connected to pin A35 of U4; pin 15 of J9 is electrically connected to pin A36 of U4; pin 16 of J9 is electrically connected to pin A30 of U4; pin 17 of J9 is electrically connected to pin A32 of U4; pin 18 of J9 is electrically connected to pin A33 of U4; pin 19 of J9 is electrically connected to pin A34 of U4; pin 10 of J9 is electrically connected to pin A35 of U4; pin 11 of J9 is electrically connected to pin A36 of U4; pin 12 of J9 is electrically connected to pin A33 of U4 Pin A25 is electrically connected. Pin 46 of J9 is electrically connected to pin A26 of U4. Pin 47 of J9 is electrically connected to pin A27 of U4. Pin 48 of J9 is electrically connected to pin A28 of U4. Pin 49 of J9 is electrically connected to pin A23 of U4. Pin 50 of J9 is electrically connected to pin A24 of the main control chip U4 in the main control module. Pins A19, A20, A45, A46, A52, A77, A79, B30, B31, B44, and B59 of U4 are grounded. Pin A80 is electrically connected to VDD_5V.

6. The multi-communication interface based command and control all-in-one screen communication system of claim 5, wherein, The RS232 communication circuit includes an RS232 conversion chip U16. The first pin of U16 is electrically connected to the third pin via capacitor C84. The second pin of U16 is grounded via capacitor C85. The fourth pin of U16 is electrically connected to the fifth pin via capacitor C86. The sixth pin of U16 is grounded via capacitor C87. The seventh pin of U16 is electrically connected to the second pin of connector J8 via resistor R123 and ferrite bead FB9. The eighth pin of U16 is electrically connected to the first pin of connector J8 via resistor R124 and ferrite bead FB11. The ninth pin of U16 is electrically connected to pin B50 of U4. Pin 10 of U16 is electrically connected to pin B49 of U4. Pin 11 of U16 is electrically connected to pin B47 of U4. Pin 12 of U16 is electrically connected to pin B48 of U4. Pin 13 of U16 is electrically connected to pin 3 of connector J8 via resistor R122 and ferrite bead FB10. Pin 14 of U16 is electrically connected to pin 4 of connector J8 via resistor R121 and ferrite bead FB8. Pin 5 of J8 is grounded. Pin 15 of U16 is grounded. Pin 16 of U16 is electrically connected to VDD_3V3. Pin 16 of U16 is also grounded via capacitor C83.

7. The multi-communication interface based command and control all-in-one screen communication system of claim 5, wherein, The CAN communication circuit includes a CAN conversion chip U9. Pins 1, 3, 7, 9, 10, 11, 13, 16, 18, and 20 of U9 are grounded. Pin 4 of U9 is electrically connected to pin B8 of U4. Pin 5 of U9 is electrically connected to pin B7 of U4. Pins 6 and 8 of U9 are electrically connected to VDD_3V3. Pin 8 of U9 is grounded through capacitors C49, C52, C53, and an ESD protection diode D13. Pin 12 of U9 is grounded through capacitors C50 and C51. Pin 19 of U9 is grounded through capacitor C48. Pin 15 of U9 is electrically connected to the fourth terminal of a common-mode filter L4. Pin 17 of U9 is electrically connected to the first terminal of a common-mode filter L4. The second terminal of diode D8 is electrically connected to the first terminal of diode D8, the first terminal of diode D9, and the first terminal of resettable fuse F2. The third terminal of common-mode filter L4 is electrically connected to the first terminal of diode D11, the first terminal of diode D12, and the first terminal of resettable fuse F3. The second terminal of diode D8 is electrically connected to the first terminal of ESD protection diode D10 and the second terminal of diode D11. The second terminal of diode D9 is electrically connected to the second terminal of ESD protection diode D10 and the second terminal of diode D12. The second terminal of diode D8 is grounded through diode D15, and the second terminal of diode D9 is grounded through diode D14. The second terminal of resettable fuse F2 is electrically connected to connector J5, the second terminal of resettable fuse F3 is electrically connected to connector J5, and the second terminal of resettable fuse F2 is electrically connected to the second terminal of resettable fuse F3 through resistor R68.

8. The multi-communication interface based command and control all-in-one screen communication system of claim 5, wherein, The RS485 communication circuit includes an RS485 conversion chip U21. The first pin of U21 is electrically connected to the third pin of optocoupler U20. The second and third pins of U21 are electrically connected to 5V_ISO via resistor R148. The fourth pin of U21 is electrically connected to the fifth pin of optocoupler U22. The fifth pin of U21 is grounded. The sixth pin of U21 is grounded via capacitor C117. The sixth pin of U21 is electrically connected to the fourth pin of common-mode filter L7. The seventh pin of U21 is grounded via capacitor C118. The seventh pin of U21 is electrically connected to the first pin of common-mode filter L7. The second pin of common-mode filter L7 is grounded via electrostatic discharge protection diode D27. The second pin of common-mode filter L7 is connected to a resettable fuse. F7 is electrically connected to the first pin of connector J20. The third pin of common mode filter L7 is grounded through electrostatic protection diode D26. The third pin of common mode filter L7 is electrically connected to the second pin of connector J20 through resettable fuse F6. The third pin of common mode filter L7 is electrically connected to the second pin through electrostatic protection diode D25. The eighth pin of U21 is grounded through electrostatic protection diode D24, capacitor C115, and capacitor C116 respectively. The eighth pin of U21 is electrically connected to 5V_ISO. 5V_ISO is electrically connected to the third pin of DIP switch S3 through resistor R140. The sixth pin of DIP switch S3 is grounded through resistor R144. The third pin of DIP switch S3 is electrically connected to the sixth pin through resistor R142. The first pin of optocoupler U20 is electrically connected to 5V_ISO through resistor R143. The fourth pin of optocoupler U20 is grounded. The fifth pin of optocoupler U20 is electrically connected to pin B54 of U4. The fifth pin of optocoupler U20 is electrically connected to VDD_3V3 through resistor R141. The sixth pin of optocoupler U20 is electrically connected to VDD_3V3. The first pin of optocoupler U22 is electrically connected to VDD_3V3 through resistor R146. The third pin of optocoupler U22 is electrically connected to pin B53 of U4. The fourth pin of optocoupler U22 is grounded. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO through resistor R147. The fifth pin of optocoupler U22 is electrically connected to 5V_ISO.

9. The integrated display and control screen communication system based on multiple communication interfaces according to claim 5, characterized in that, The USB communication circuit includes a common-mode filter L6. The first pin of the common-mode filter L6 is electrically connected to the B28 pin of U4, the fourth pin of the common-mode filter L6 is electrically connected to the B26 pin of U4, the second and third pins of the common-mode filter L6 are grounded through the electrostatic protection diode D17, the second pin of the common-mode filter L6 is electrically connected to the third pin of connector J7, the third pin of the common-mode filter L6 is electrically connected to the second pin of connector J7, the first pin of connector J7 is electrically connected to VDD_5V, and the fourth and fifth pins of connector J7 are grounded.

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