A capacitive touch screen complex environment anti-interference circuit device

Abstract

The present invention proposes a complex environment anti-interference circuit device for a capacitive touch screen, which relates to the technical field of complex environment anti-interference for a capacitive touch screen. The device comprises a processing circuit, an isolation circuit, a power supply circuit, an electrostatic diode circuit, a reset circuit, a communication circuit, a function selection circuit, a socket circuit and an electrostatic protection circuit; the socket circuit is respectively connected to the processing circuit, the touch screen, the isolation circuit and the electrostatic diode circuit, the processing circuit is also connected to the reset circuit, the function selection circuit, the isolation circuit and the communication circuit, the electrostatic protection circuit is connected to the touch screen, and the isolation circuit is connected to the reset circuit; the power output end of the power supply circuit is respectively connected to the power input end of the processing circuit, the isolation circuit, the electrostatic diode circuit, the socket circuit and the reset circuit; the present invention realizes comprehensive protection of the capacitive touch screen in a complex environment, improves the stability and reliability of the equipment, and reduces the cost at the same time.

Description

Technical Field

[0001] The invention provides a complex environment anti-interference circuit device for a capacitive touch screen, and relates to the technical field of complex environment anti-interference for capacitive touch screens. Background Art

[0002] With the rapid development of electronic technology, capacitive touch screens, as a human-computer interaction interface, have been widely used in various electronic devices such as smart phones, tablet computers, and car navigation. However, in actual use, capacitive touch screens often face challenges in complex environments, such as electromagnetic interference, electrostatic discharge, temperature changes, etc. These factors may interfere with the normal operation of the touch screen and affect the user experience. At present, although there are some anti-interference circuit devices on the market, most of them can only protect against a specific interference factor, and cannot effectively deal with multiple interferences in complex environments. For example, although some circuit devices can prevent electrostatic discharge from damaging the touch screen, they seem powerless when facing electromagnetic interference. In addition, the design of some anti-interference circuit devices is complex and the cost is high, which is not conducive to large-scale application.

[0003] Therefore, how to design a capacitive touch screen anti-interference circuit device that can simultaneously cope with multiple interference factors and has a high cost-effectiveness has become an important issue facing the current industry. Summary of the invention

[0004] The present invention provides a complex environment anti-interference circuit device for a capacitive touch screen, which is used to solve the problem that most traditional methods can only protect against a specific interference factor, but cannot effectively deal with multiple interferences in a complex environment. For example, although some circuit devices can prevent electrostatic discharge from damaging the touch screen, they are powerless when facing electromagnetic interference. In addition, the design of some anti-interference circuit devices is complex, the cost is high, and it is not conducive to large-scale application.

[0005] A capacitive touch screen complex environment anti-interference circuit device, the capacitive touch screen complex environment anti-interference circuit device comprising:

[0006] Processing circuit, isolation circuit, power supply circuit, electrostatic diode circuit, reset circuit, communication circuit, function selection circuit, socket circuit and electrostatic protection circuit; the socket circuit is respectively connected to the processing circuit, touch screen, isolation circuit and electrostatic diode circuit, the processing circuit is also connected to the reset circuit, function selection circuit, isolation circuit and communication circuit, the electrostatic protection circuit is connected to the touch screen, and the isolation circuit is connected to the reset circuit; the power output end of the power supply circuit is respectively connected to the power input end of the processing circuit, isolation circuit, electrostatic diode circuit, isolation circuit, socket circuit and reset circuit; monitor the operation data of the device, and judge and adjust the interference situation of each circuit in the device.

[0007] Furthermore, the processing circuit comprises:

[0008] A first processing circuit and a second processing circuit, wherein the power input end of the first processing circuit is the power input end of the processing circuit, and the power input / output end of the first processing circuit is connected to the power input / output end of the second processing circuit; the startup port of the first processing circuit is connected to the startup port of the communication circuit, the reset port of the first processing circuit is connected to the reset port of the reset circuit, the differential positive / differential negative port of the first processing circuit is connected to the differential positive / differential negative port of the USB pin socket of the socket circuit, the serial clock port / serial data port of the first processing circuit is connected to the serial clock port / serial data port of the second isolation circuit of the isolation circuit; the interrupt signal port of the first processing circuit, the interrupt signal port of the second processing circuit and the interrupt signal port of the first isolation circuit of the isolation circuit are connected.

[0009] Furthermore, the connection relationship of the second processing circuit includes:

[0010] The disable port of the second processing circuit is connected to the disable port of the function selection circuit, and the reset port of the second processing circuit is connected to the reset port of the reset circuit.

[0011] Furthermore, the processing circuit further includes:

[0012] The first processing circuit is respectively connected to the second processing circuit, the communication circuit, the reset circuit, the USB pin socket of the socket circuit, the first isolation circuit of the isolation circuit and the second isolation circuit of the isolation circuit;

[0013] The second processing circuit is connected to the reset circuit and the function selection circuit respectively.

[0014] Furthermore, the isolation circuit comprises:

[0015] A first isolation circuit and a second isolation circuit, the reset port of the first isolation circuit is connected to the reset port of the reset circuit, the interrupt input port of the first isolation circuit is respectively connected to the second electrostatic diode circuit of the electrostatic diode circuit and the interrupt input port of the touch FPC seat of the socket circuit, and the reset output port of the first isolation circuit is respectively connected to the second electrostatic diode circuit of the electrostatic diode circuit and the reset output port of the touch FPC seat.

[0016] Furthermore, the connection relationship of the second isolation circuit includes:

[0017] The data output port of the second isolation circuit is respectively connected to the data output ports of the second electrostatic diode circuit of the electrostatic diode circuit and the touch FPC seat of the socket circuit, and the clock output port of the second isolation circuit is respectively connected to the data output ports of the second electrostatic diode circuit of the electrostatic diode circuit and the touch FPC seat of the socket circuit.

[0018] Furthermore, the connection relationship of the electrostatic diode circuit includes:

[0019] The electrostatic diode circuit comprises a first electrostatic diode circuit and a second electrostatic diode circuit, wherein the differential positive / differential negative electrode port of the first electrostatic diode is connected to the differential positive / differential negative electrode port of the USB pin socket of the socket circuit.

[0020] Furthermore, the positive poles of the output power supplies of all the circuits are connected, and the socket circuit includes a USB pin socket and a touch FPC board.

[0021] Further, the monitoring device operation data, determining and adjusting the interference conditions of each circuit in the device includes:

[0022] Acquire real-time data of the operation process of the device, calculate the circuit interference value according to the real-time data combined with preset operation data, determine the interference position of the device according to the circuit interference value, obtain the determination result, generate corresponding adjustment instructions according to the determination result, perform interference adjustment, and obtain the adjustment result.

[0023] Further, the method comprises:

[0024] The device is provided with power supply through a power circuit, touch screen signals are received and processed through a processing circuit, circuit interference is isolated through an isolation circuit, static electricity is eliminated through an electrostatic diode circuit and an electrostatic protection circuit, a circuit connected to the device is reset through a reset circuit, a working mode of a second processing circuit of the processing circuit is adjusted through a function selection circuit, and a short-circuit operation is performed through a communication circuit.

[0025] Beneficial effects of the present invention: The device adopts a series of anti-interference measures, such as electrostatic protection circuit and isolation chip, which effectively reduces the impact of static electricity and other interference factors on the touch screen in a complex environment. This enables the touch screen to work stably in an environment with a large interference source, and improves the overall environmental adaptability of the device. The device realizes the conversion between the IIC protocol and the USB protocol through CH554T, so that the touch screen can communicate with external devices through the USB port. This design not only broadens the application scope of the touch screen, but also improves its compatibility and communication efficiency with different devices. The use of a low-voltage linear regulator, i.e., a power supply circuit, ensures that the touch screen and the microcontroller can stably and safely obtain the required 3.3V operating voltage. This power management method not only improves the power utilization efficiency, but also reduces the risk of equipment failure caused by unstable voltage. The microcontroller STC8 realizes the intelligent reset function through programming, which can reset the touch screen regularly to avoid freezing. At the same time, the design of the function selection circuit enables STC8 to work in different modes according to requirements, meeting the diverse application requirements. This customized functional design improves the flexibility and usability of the device. The communication circuit and reset circuit designed by the device make the firmware burning process of CH554T simple and convenient. At the same time, the design of the reset circuit and function selection circuit also facilitates the debugging and maintenance of the equipment and reduces the maintenance cost. The device uses a variety of technical means to achieve stable operation and multi-protocol compatible conversion in complex environments, improve the anti-interference ability and reliability of the equipment, and optimize power management, intelligent reset and function customization, providing users with a more convenient and efficient use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a functional method of a complex environment anti-interference circuit device for a capacitive touch screen;

[0027] Figure 2 is a schematic diagram of the power supply circuit;

[0028] Figure 3 is a schematic diagram of a second isolation circuit;

[0029] Figure 4 is a schematic diagram of a first isolation circuit;

[0030] Figure 5 is a schematic diagram of a first electrostatic diode;

[0031] Figure 6 This is a schematic diagram of the USB pin socket;

[0032] Figure 7 is a schematic diagram of a second electrostatic diode;

[0033] Figure 8 This is a schematic diagram of the touch FPC seat;

[0034] Fig. 9 is a schematic diagram of a second processing circuit;

[0035] Fig.10 is a schematic diagram of a first processing circuit;

[0036] Fig.11 is a schematic diagram of a communication circuit;

[0037] Fig.12 is a schematic diagram of a reset circuit;

[0038] Fig.13 Select the circuit schematic for the function;

[0039] Fig.14 This is a schematic diagram of the electrostatic diode circuit. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] In one embodiment of the present invention, a capacitive touch screen complex environment anti-interference circuit device is provided, and the capacitive touch screen complex environment anti-interference circuit device comprises:

[0042] Processing circuits, isolation circuits, power circuits (such as Figure 2 As shown), electrostatic diode circuit (as Fig.14 As shown), reset circuit (as Fig.12 As shown), communication circuits (such as Fig.11 As shown), function selection circuit (such as Fig.13 As shown), socket circuit and electrostatic protection circuit; the socket circuit is respectively connected to the processing circuit, touch screen, isolation circuit and electrostatic diode circuit, the processing circuit is also connected to the reset circuit, function selection circuit, isolation circuit and communication circuit, the electrostatic protection circuit is connected to the touch screen, and the isolation circuit is connected to the reset circuit; the power output end of the power supply circuit is respectively connected to the power input end of the processing circuit, isolation circuit, electrostatic diode circuit, isolation circuit, socket circuit and reset circuit; monitor the operation data of the device, determine and adjust the interference of each circuit in the device (such as Figure 1 as shown).

[0043] The working principle of the above technical solution is as follows: the function of this device is to enable the touch screen to work with the USB port in a particularly complex environment with a relatively large interference source. The touch screen is an IIC protocol, the USB port is a USB protocol, the touch screen is connected to JP3, and the USB cable is plugged into JP1. CH554T is responsible for connecting the 4 pins of the USB port and the touch screen. The communication is bidirectional, and the USB port will send data to CH554T. D1 and D8 protect JP1 and JP3. When encountering static electricity, they can protect the pins on these two interfaces from being damaged by static electricity breakdown, ensuring the reliability of the board.

[0044] The low voltage linear regulator is responsible for reducing the 5V voltage of the USB port to 3.3V for the touch screen and microcontroller (the touch screen must use 3.3V voltage). The IC1 isolation chip isolates 2 unidirectional digital signals (INT and RST) and provides an isolated power supply (VOUT). IC2 isolates 2 bidirectional digital signals (SDA and SCL) of the IIC protocol. This chip does not provide isolated power supply, but only has an isolation function. In fact, when CH554T communicates with the touch screen, SDA is bidirectional, and SCL is output by CH554T, not by the touch screen. The microcontroller programming code of this model of U3 and STC8 is used to implement some custom functions, such as resetting the touch screen by pulling down the RST pin for 100ms every 5 minutes to avoid the touch screen from freezing. The communication circuit composed of R1 here is used when the CH554T is burned firmware. The first time the firmware is burned, you only need to insert the USB port, and except for the first time, you need to manually short R1 to burn the firmware. The reset circuit allows both CH554T and STC8 to reset the touch screen normally and will not interfere with each other. The function selection circuit can make STC8 work in different modes. For example, shorting JP2 can turn off the reset function of STC8. The electrostatic protection circuit is to protect the device from being broken down by static electricity as much as possible.

[0045] Corresponding pin functions: CH INT: interrupt signal port;

[0046] CH SCL: serial clock port: / / clock pin of IIC protocol;

[0047] CH SDA: serial data port: / / data pin of IIC protocol;

[0048] CH RX: receive: / / UART protocol reception;

[0049] CH TX: Send: / / UART protocol sending;

[0050] CH RST: reset port;

[0051] UD N: negative pole: / / differential negative pole of USB protocol;

[0052] UD P: Positive: / / Differential positive of USB protocol;

[0053] CH BOOT: boot port: / / CH554T firmware burning selection pin, short circuit will start the burning program;

[0054] STC RST: reset;

[0055] D RST: reset;

[0056] STC DIS: Disable port: / / mode selection pin, turn off the "timer reset" function when short-circuited;

[0057] VOUT: Output power positive pole: / / Output power positive pole (3.3V);

[0058] INT IN: interrupt input port: / / interrupt input of touch screen;

[0059] D RST OUT: reset output port;

[0060] SCL OUT: clock output port;

[0061] SDA OUT: data output port.

[0062] The technical effects of the above technical scheme are: realizing the intelligence and automation of the system, improving the speed and accuracy of data processing, and meeting various application requirements. Improving the stability and reliability of the system, and reducing the impact of noise and interference on system performance. Ensuring the normal operation of the system and avoiding failures caused by fluctuations or instability in the power supply voltage. Improving the system's anti-static interference capability and extending the system's service life. Ensuring that the system can start reliably and automatically recover when a failure occurs, improving the system's availability. Realizing remote monitoring and control of the system, improving data transmission efficiency and communication quality. Improving the flexibility and scalability of the system to meet the diverse needs of users. Facilitating the connection and use of external devices, and improving the scalability and compatibility of the system. Further improving the system's anti-static interference capability and ensuring stable operation of the system.

[0063] In one embodiment of the present invention, the processing circuit comprises:

[0064] The first processing circuit (such as Fig.10 as shown) and a second processing circuit (as Fig. 9As shown), the power input end of the first processing circuit is the power input end of the processing circuit, the power input / output end of the first processing circuit is connected to the power input / output end of the second processing circuit; the start port of the first processing circuit is connected to the start port of the communication circuit, the reset port of the first processing circuit is connected to the reset port of the reset circuit, the differential positive / differential negative port of the first processing circuit is connected to the USB pin socket of the socket circuit (as shown Figure 6 The serial clock port / serial data port of the first processing circuit is connected to the second isolation circuit (as shown in FIG. Figure 3 The interrupt signal port of the first processing circuit, the interrupt signal port of the second processing circuit and the first isolation circuit of the isolation circuit (as shown) are connected to the serial clock port / serial data port of the first processing circuit; the interrupt signal port of the first processing circuit, the interrupt signal port of the second processing circuit and the first isolation circuit of the isolation circuit (as shown) Figure 4 The interrupt signal port is connected to the

[0065] The working principle of the above technical solution is:

[0066] The 3.3V end of the power supply circuit is connected to the 3.3V ends of the processing circuit, the isolation circuit and the reset circuit respectively;

[0067] The 5V output end of the power supply circuit is connected to the 5V end of the electrostatic diode circuit and the USB pin socket respectively;

[0068] The processing circuit includes a first processing circuit and a second processing circuit;

[0069] The 3.3V end of the first processing circuit is the 3.3V end of the processing circuit, and the 3.3V end of the first processing circuit is connected to the second pin VCC of the second processing circuit; the third pin P1.5 of the first processing circuit is connected to the CH-BOOT port of the communication circuit, the 17th pin P1.2 of the first processing circuit is connected to the CH-RST port of the reset circuit, the 14th pin of the first processing circuit is connected to the UD-P port of the USB pin socket, and the 15th pin of the first processing circuit is connected to the UD-N port of the USB pin socket;

[0070] The fourth pin P1.6 of the first processing circuit and the sixth pin P3.1 of the second processing circuit, the fifth pin P1.7 of the first processing circuit and the fifth pin P3.0 of the second processing circuit.

[0071] The technical effects of the above technical solution are: the electrical stability and anti-static interference capability of the system are improved through the isolation circuit and the electrostatic protection circuit. The reset circuit ensures that the system can automatically recover under abnormal conditions, thereby improving the reliability of the system. The design of the processing circuit enables the system to perform different tasks according to different needs, thereby improving the flexibility of the system. The communication circuit and the USB pin socket enable the system to transmit and communicate data with other devices or networks, thereby expanding the application scope of the system. The power supply circuit provides the system with a stable voltage output, thereby ensuring the efficient operation of the system.

[0072] In one embodiment of the present invention, the connection relationship of the second processing circuit includes:

[0073] The disable port of the second processing circuit is connected to the disable port of the function selection circuit, and the reset port of the second processing circuit is connected to the reset port of the reset circuit.

[0074] The working principle of the above technical solution is: the third pin P5.5 of the second processing circuit is connected to the STC-DIS port of the function selection circuit, and the eighth pin P3.3 of the second processing circuit is connected to the STC-RST port of the reset circuit.

[0075] The technical effect of the above technical solution is: the third pin P5.5 of the second processing circuit is connected to the STC-DIS port of the function selection circuit, and this connection enables the second processing circuit to control the function selection circuit. Specifically, the second processing circuit can send a signal to the STC-DIS port through the P5.5 pin to enable or disable certain functions, or select a specific functional module for activation. This capability enables the system to dynamically adjust its functions according to actual needs or operating conditions, thereby improving the flexibility and adaptability of the system. The eighth pin P3.3 of the second processing circuit is connected to the STC-RST port of the reset circuit, and this connection allows the second processing circuit to trigger a reset operation when necessary. When the system has an error, a fault, or needs to be restarted, the second processing circuit can send a reset signal to the STC-RST port through the P3.3 pin. After receiving this signal, the reset circuit will perform a reset operation to restore the system or related modules to the initial state, thereby ensuring the stability and reliability of the system. Through the connection of the second processing circuit with the function selection circuit and the reset circuit, the system has higher flexibility and reliability. The system can dynamically adjust functions as needed and automatically reset when a fault occurs, thereby ensuring that the system can operate continuously and stably. This design not only improves user experience, but also reduces system maintenance costs.

[0076] In one embodiment of the present invention, the processing circuit further includes:

[0077] The first processing circuit is respectively connected to the second processing circuit, the communication circuit, the reset circuit, the USB pin socket of the socket circuit, the first isolation circuit of the isolation circuit and the second isolation circuit of the isolation circuit;

[0078] The second processing circuit is connected to the reset circuit and the function selection circuit respectively.

[0079] The working principle of the above technical solution is as follows: the first processing circuit can realize data sharing, control signal transmission or task coordination by connecting to the second processing circuit, ensuring close cooperation between the two processing circuits. The first processing circuit is isolated from other circuits by these two isolation circuits to protect the main controller from electrical interference or noise, ensuring accurate data transmission and stable operation of the system. The first processing circuit establishes a connection with an external USB device through a USB pin socket to realize data transmission and device identification and management. The first processing circuit communicates with an external device or network through a communication circuit to realize remote monitoring, data exchange or system control. The second processing circuit acts as an auxiliary processor to assist the first processing circuit in completing specific tasks. Similar to the first processing circuit, the second processing circuit is also isolated from other circuits through an isolation circuit to ensure data accuracy and system stability. The second processing circuit can send a reset signal to the reset circuit to reset the system or a specific module when needed. The second processing circuit controls the activation or deactivation of different functional modules through a function selection circuit to realize flexible adjustment of system functions.

[0080] The technical effects of the above technical scheme are as follows: the application of the isolation circuit reduces the impact of electrical interference and noise on the system, and improves the stability and reliability of the system. Through the connection between the USB pin socket and the communication circuit and the external device or network, efficient data transmission and communication are achieved, and the overall performance of the system is improved. The connection between the second processing circuit and the function selection circuit enables the system to dynamically adjust functions according to different needs, thereby improving the flexibility and adaptability of the system. Through the connection of the reset circuit, the system can automatically reset in the event of a fault or abnormality, simplifying the maintenance and management process of the system. The close connection between the first processing circuit and the second processing circuit and each circuit module together constitutes an efficient, stable and flexible system architecture, providing strong support for various applications.

[0081] In one embodiment of the present invention, the isolation circuit comprises:

[0082] A first isolation circuit and a second isolation circuit, wherein a reset port of the first isolation circuit is connected to a reset port of the reset circuit, and an interrupt input port of the first isolation circuit is respectively connected to a second electrostatic diode circuit (such as Figure 7 As shown) and the touch FPC seat of the socket circuit (as Figure 8The interrupt input port of the touch FPC seat is connected to the first isolation circuit, and the reset output port of the first isolation circuit is connected to the second electrostatic diode circuit of the electrostatic diode circuit and the reset output port of the touch FPC seat respectively.

[0083] The working principle of the above technical solution is: the isolation circuit includes a first isolation circuit and a second isolation circuit;

[0084] The fourth pin VO2 of the first isolation circuit is respectively connected to the first pin P3.2 of the first processing circuit and the seventh pin P3.2 of the second processing circuit, the third pin VII of the first isolation circuit is connected to the D-RST port of the reset circuit, the 13th pin V12 of the first isolation circuit is connected to the 10th pin INT-IN port of the touch FPC seat, and the 14th pin VO1 of the first isolation circuit is connected to the 9th pin D-RST-OUT of the touch FPC seat.

[0085] The technical effect of the above technical solution is: the first isolation circuit is connected to the first processing circuit and the second processing circuit, and the 4th pin VO2 of the first isolation circuit is connected to the 1st pin P3.2 of the first processing circuit and the 7th pin P3.2 of the second processing circuit at the same time. This means that the first isolation circuit plays a role in signal isolation and transmission between the two processing circuits. It may ensure that the signal is not affected by electrical interference or noise during transmission through optoelectronic isolation, transformer isolation or other isolation technologies, while maintaining the integrity and accuracy of the signal. The 3rd pin VII of the first isolation circuit is connected to the D-RST port of the reset circuit. This means that the first isolation circuit can receive the reset signal from the reset circuit and transmit it to the module or circuit that needs to be reset after isolation. This connection ensures the accuracy and reliability of the reset signal and avoids the situation of false reset or reset failure caused by electrical interference. The 13th pin V12 of the first isolation circuit is connected to the 10th pin INT-IN port of the touch FPC seat, and the 14th pin VO1 is connected to the 9th pin D-RST-OUT of the touch FPC seat. This connection enables the touch FPC seat to interact with the system through the first isolation circuit. For example, the touch FPC seat may transmit the signal generated by the touch event to the first isolation circuit through the INT-IN port, and after isolation processing, it is output to other parts of the system through the VO1 pin. At the same time, the system can also send a reset signal to the touch FPC seat through the D-RST-OUT pin to ensure its normal operation. Through the application of the isolation circuit, the system can reduce the impact of electrical interference and noise on the signal and ensure the integrity and accuracy of the signal. The application of the isolation circuit makes the connection between the various parts of the system more stable and reliable, reducing the risk of system failure or performance degradation caused by electrical interference. The isolated connection of the reset circuit ensures the accuracy of the reset signal, avoids the risk of system crash or data loss caused by false reset, and improves the safety of the system. Through the connection between the first isolation circuit and the touch FPC seat, the system can accurately identify and process touch events, providing users with a smoother and more accurate touch experience. The first isolation circuit plays a key role in signal isolation, transmission and protection in the system. Through its connection with other circuit modules, the system can be operated efficiently, stably and safely.

[0086] In one embodiment of the present invention, the connection relationship of the second isolation circuit includes:

[0087] The data output port of the second isolation circuit is respectively connected to the data output ports of the second electrostatic diode circuit of the electrostatic diode circuit and the touch FPC seat of the socket circuit, and the clock output port of the second isolation circuit is respectively connected to the data output ports of the second electrostatic diode circuit of the electrostatic diode circuit and the touch FPC seat of the socket circuit.

[0088] The working principle of the above technical solution is: the third pin SCLA of the second isolation circuit is connected to the second pin P1.3 of the first processing circuit, and the second pin SDAA of the second isolation circuit is connected to the third pin P1.5 of the first processing circuit.

[0089] The technical effect of the above technical solution is: the third pin SCLA (serial clock port) of the second isolation circuit is connected to the second pin P1.3 of the first processing circuit, and the second pin SDAA is connected to the third pin P1.5 of the first processing circuit. This connection realizes the isolated transmission of data and improves the reliability of data communication. Due to the existence of the isolation circuit, the data transmission between the first processing circuit and the second isolation circuit is not easily affected by electrical noise or interference, ensuring the integrity and accuracy of the data. The application of the isolation circuit not only improves the reliability of data transmission, but also helps to reduce the electrical interference and noise inside the system, thereby enhancing the stability of the entire system. This stability is essential to ensure that the system operates trouble-free for a long time. The connection between the second isolation circuit and the second electrostatic diode circuit helps to protect the system from damage by electrostatic discharge (ESD). The electrostatic diode circuit can absorb or bypass electrostatic charges to prevent static electricity from damaging the circuits inside the system. By combining with the isolation circuit, the system's resistance to electrostatic discharge is further enhanced. The ground terminals of all circuits are connected to each other to ensure that the reference potential of the entire circuit system is consistent. This grounding design helps to reduce the potential difference between circuits and prevent electrical interference or noise caused by the potential difference. At the same time, grounding also provides a path for current return, ensuring the normal operation of the circuit. A good grounding design can improve the electromagnetic compatibility (EMC) of the system and reduce the impact of external electromagnetic fields on the internal circuits of the system. This is of great significance for ensuring the stable operation of the system in a complex electromagnetic environment. The connection of the second isolation circuit with the first processing circuit, the second electrostatic diode circuit, and the connection of all circuit grounding terminals together improve the stability, reliability and electromagnetic compatibility of the system. These technical effects help ensure that the system can operate stably and reliably under various working conditions.

[0090] In one embodiment of the present invention, the connection relationship of the electrostatic diode circuit includes:

[0091] The electrostatic diode circuit includes a first electrostatic diode circuit (such as Figure 5 As shown) and a second electrostatic diode circuit, the differential positive / differential negative port of the first electrostatic diode is connected to the differential positive / differential negative port of the USB pin socket of the socket circuit.

[0092] The positive poles of the output power of all circuits are connected, and the socket circuit includes a USB pin socket and a touch FPC board. The connected positive poles need to have the same voltage value, for example, 3.3V connects to 3.3V, and 5V connects to 5V.

[0093] The working principle of the above technical solution is as follows: the electrostatic diode circuit includes a first electrostatic diode circuit and a second electrostatic diode circuit, the third pin UD-P port of the first electrostatic diode is connected to the second pin UD-P port of the USB pin seat, and the sixth pin UD-N port of the first electrostatic diode is connected to the third pin UD-N port of the USB pin seat. The SCL-OUT port of the second electrostatic diode circuit is connected to the sixth pin SCLB of the second isolation circuit, the SDA-OUT port of the second electrostatic diode is respectively connected to the seventh pin SDAB of the second isolation circuit and the sixth pin SDA-OUT port of the touch FPC seat, the sixth pin INT-IN of the second electrostatic diode circuit is respectively connected to the thirteenth pin V12 of the first isolation circuit and the tenth pin INT-IN of the touch FPC seat, the fourth pin D-RST-OUT of the second electrostatic diode circuit is connected to the first isolation circuit and the ninth pin D-RST-OUT port, and the fifth pin VOUT of the second electrostatic diode is respectively connected to the VOUT port of the first isolation circuit, the second isolation circuit and the touch FPC seat. The GND-OUT ports of all circuits are connected, and the GND ports of the circuits are connected. The USB pin socket serves as an interface between the system and the external USB device, and its signal output end is connected to the signal input end of the first electrostatic diode circuit, and its signal input end is connected to the signal output end of the first electrostatic diode circuit. This connection mode allows the USB pin socket to perform electrostatic protection through the first electrostatic diode circuit while transmitting data. When the USB interface is subjected to electrostatic discharge impact, the first electrostatic diode circuit can quickly absorb or bypass the electrostatic charge, thereby protecting the USB pin socket and related circuits from damage. The reset circuit is connected to other parts of the system through the first isolation circuit to achieve isolated transmission of the reset signal. When the system needs to be reset, the reset circuit generates a reset signal, which is transmitted to the module or circuit that needs to be reset after isolation processing by the first isolation circuit, thereby achieving the reset operation of the system. The touch FPC board also interacts with the system through the first isolation circuit. The signal generated by the touch event is transmitted to the first isolation circuit through the touch FPC board, and after isolation processing, it is output by the first isolation circuit to other parts of the system for processing. This isolated transmission mode ensures the accuracy and reliability of the touch signal and avoids misoperation or signal distortion caused by electrical interference.

[0094] The technical effect of the above technical solution is as follows: the USB interface is the main channel for connecting external devices to the system, but it is also a path that electrostatic discharge easily invades. The direct connection between the first electrostatic diode circuit and the USB pin socket can quickly absorb or bypass the electrostatic charge when electrostatic discharge occurs, thereby protecting the USB interface and related circuits from damage. The damage of electrostatic discharge to electronic components is cumulative, and long-term exposure to electrostatic discharge shock will cause the performance of the components to deteriorate or even fail. The application of the first electrostatic diode circuit can effectively reduce the damage of electrostatic discharge to the system and extend the service life of the system. The USB interface is usually used for data transmission, and electrostatic discharge may interfere with the data transmission process, resulting in data loss or error. The protective effect of the first electrostatic diode circuit can ensure the stability of data transmission and improve the reliability of the system. Due to the protection of the electrostatic diode circuit, the failure rate of the system caused by electrostatic discharge will be greatly reduced, thereby reducing the maintenance cost and downtime of the system. When electrostatic discharge occurs, if there is no effective protection measure, data may be damaged or leaked. The application of the first electrostatic diode circuit can ensure the safety of user data in the case of electrostatic discharge. The connection between the first electrostatic diode circuit and the USB pin socket effectively improves the reliability, stability and safety of the system through its electrostatic protection effect. This design not only protects the system's hardware circuits, but also ensures the stability of data transmission and the security of user data, which is of great significance for improving overall system performance.

[0095] The second electrostatic diode circuit is connected to the second isolation circuit through its SCL-OUT and SDA-OUT ports, ensuring the electrostatic protection of the isolation circuit during signal transmission. This helps prevent interference and damage to the signal caused by electrostatic discharge, and improves the reliability and stability of signal transmission. By connecting the second electrostatic diode circuit to the touch FPC seat, the scope of electrostatic protection is expanded, which not only protects the main circuit module, but also ensures that the touch FPC seat and its connected external devices are protected from damage by electrostatic discharge. By connecting the GND-OUT port and the GND port of multiple circuits, the ground wiring of the entire system is simplified, and the integration and reliability of the system are improved. The shared connection of the second electrostatic diode circuit with multiple modules (such as the VOUT port) reduces the connection points between circuits, reduces the complexity of the system, and improves the stability and maintainability of the overall circuit. The joint application of the electrostatic diode circuit and the isolation circuit reduces the impact of electrical noise and interference on the system and ensures stable communication between the modules of the system. By implementing electrostatic protection measures throughout the system, the anti-static ability of the system has been significantly improved, reducing the risk of system failure and damage caused by electrostatic discharge. Since the touch FPC holder is protected from electrostatic discharge, users can use the touch function with greater confidence without worrying about damage to the device caused by electrostatic discharge, thereby improving the user experience. The connection between the second electrostatic diode circuit and the second isolation circuit, the touch FPC holder and other modules enhances the stability, reliability and user experience of the system by providing electrostatic protection and simplifying wiring. This design helps ensure that the system can operate stably and reliably in various environments, providing users with a good user experience.

[0096] One embodiment of the present invention obtains real-time data of the operation process of the device, calculates the circuit interference value based on the real-time data combined with preset operation data, determines the interference position of the device based on the circuit interference value, obtains the determination result, generates corresponding adjustment instructions based on the determination result, performs interference adjustment, and obtains the adjustment result.

[0097] The working principle of the above technical solution is: obtain real-time data of the operation process of the device, calculate the circuit interference value according to the real-time data combined with preset operation data, determine the interference position of the device according to the circuit interference value, obtain the determination result, generate corresponding adjustment instructions according to the determination result, perform interference adjustment, and obtain the adjustment result.

[0098] The real-time data includes the real-time operation data of each circuit in the device, and the preset data includes the preset operation data of each circuit in the device;

[0099] The calculation formula of the circuit interference value is:

[0100]

[0101] in, is the circuit interference value, j is the number of circuits in the device, is the actual operating data of the ith circuit, is the preset operation data of the i-th circuit, is the weight coefficient of the ith circuit, is the total weight coefficient of all circuits.

[0102] The circuit interference value is compared with the preset interference value. When the circuit interference value is greater than the preset interference value, the real-time operation data of each circuit is obtained, the difference between the real-time operation data and the preset operation data of the circuit is calculated, and the difference is compared with the preset difference threshold. When the difference is greater than the difference threshold, an abnormal interference judgment is made on the corresponding circuit, and anti-interference processing is performed on the circuit according to preset conditions. When the difference is less than or equal to the difference threshold, a normal judgment is made on the corresponding circuit.

[0103] The technical effect of the above technical solution is: through real-time monitoring and data analysis, the device can timely detect interference problems in the circuit and make accurate interference position determination. This helps to quickly locate and solve interference problems and improve the stability and reliability of the device. The adjustment instructions generated according to the determination results can carry out targeted anti-interference processing on the interfered circuit, effectively reducing the impact of interference on the performance of the device. This can not only extend the service life of the device, but also improve the working efficiency of the device. The working principle of the device is simple and clear, easy to implement and maintain. Through the preset operating data and interference value threshold, the system can automatically complete the interference determination and adjustment process without manual intervention, reducing the difficulty and cost of operation. Through real-time monitoring, data analysis, interference position determination and interference adjustment and other methods, effective monitoring and processing of circuit interference is achieved, the stability and reliability of the device are improved, and it has significant technical effects and application value.

[0104] In one embodiment of the present invention, the method comprises:

[0105] The device is provided with power supply through the power circuit, the touch screen signal is received and processed through the processing circuit, the circuit interference is isolated through the isolation circuit, the static electricity is eliminated through the electrostatic diode circuit and the electrostatic protection circuit, the circuit connected to it in the device is reset through the reset circuit, and the working mode of the second processing circuit of the processing circuit is adjusted through the function selection circuit. For example, short-circuiting JP2 can turn off the reset function of the second processing circuit of the processing circuit, and the short-circuit operation is performed through the communication circuit. For example, the communication circuit is used when burning the firmware of the first processing circuit CH554T. The first time the firmware is burned, it only needs to be inserted into the USB port, and except for the first time, the firmware needs to be burned manually. Short-circuiting R1. Monitor the operation data of the device, and judge and adjust the interference of each circuit in the device.

[0106] The working principle of the above technical solution is as follows: the power supply circuit, as the energy supply center of the entire system, converts and regulates the electric energy provided by the external power supply to provide stable working voltage and current for the processing circuit, isolation circuit, electrostatic diode circuit, isolation circuit, socket circuit and reset circuit. This power supply method ensures that each circuit module can work normally and avoids system failures caused by unstable power supply. The main function of the isolation circuit is to electrically isolate the processing circuit from other circuit modules to reduce the impact of electrical noise, interference and potential electrical failures on the processing circuit. Through the isolation circuit, the processing circuit can work in a relatively stable and pure electrical environment, thereby improving its performance and stability. The electrostatic diode circuit and the electrostatic protection circuit work together to provide electrostatic protection for the entire system. They prevent electrostatic discharge from damaging circuit components by absorbing or bypassing electrostatic charges. This protection mechanism helps to reduce the system failure rate caused by electrostatic discharge and improve the reliability and service life of the system. Responsible for generating a reset signal under specific conditions to restore the system to the initial state or restart to ensure the normal operation of the system. Responsible for the communication function of the system with other devices or external networks to realize data transmission and exchange. According to user input or system requirements, select and activate the corresponding functional module or operation mode. These circuit modules together provide auxiliary functions for the system, enhancing the flexibility and scalability of the system.

[0107] The technical effect of the above technical solution is: through the stable power supply of the power circuit and the electrical isolation of the isolation circuit, the system can maintain a stable operating state in various working environments, reducing failures caused by power fluctuations or electrical interference. The application of electrostatic diode circuits and electrostatic protection circuits significantly enhances the electrostatic protection capability of the system, reduces the risk of damage to the system caused by electrostatic discharge, and improves the reliability and service life of the system. The coordinated work of auxiliary function circuits such as reset circuits, communication circuits, function selection circuits and socket circuits makes the system more flexible, scalable and easy to use, meeting the diverse needs of users. Through the power supply of the power circuit, the isolation effect of the isolation circuit, electrostatic protection and the coordinated work of auxiliary function circuits, the stability and reliability of the entire system have been significantly improved, providing users with a more stable, reliable and convenient use experience.

[0108] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A capacitive touch screen complex environment anti-interference circuit device, characterized in that: The capacitive touch screen complex environment anti-interference circuit device comprises: Processing circuit, isolation circuit, power supply circuit, electrostatic diode circuit, reset circuit, communication circuit, function selection circuit, socket circuit and electrostatic protection circuit; the socket circuit is respectively connected to the processing circuit, touch screen, isolation circuit and electrostatic diode circuit, the processing circuit is also connected to the reset circuit, function selection circuit, isolation circuit and communication circuit, the electrostatic protection circuit is connected to the touch screen, and the isolation circuit is connected to the reset circuit; the power output end of the power supply circuit is respectively connected to the power input end of the processing circuit, isolation circuit, electrostatic diode circuit, socket circuit and reset circuit; monitor the operation data of the device, and determine and adjust the interference of each circuit in the device; Wherein, the isolation circuit comprises: A first isolation circuit and a second isolation circuit, wherein a reset port of the first isolation circuit is connected to a reset port of the reset circuit, an interrupt input port of the first isolation circuit is respectively connected to a second electrostatic diode circuit of the electrostatic diode circuit and an interrupt input port of a touch FPC seat of the socket circuit, and a reset output port of the first isolation circuit is respectively connected to a second electrostatic diode circuit of the electrostatic diode circuit and a reset output port of the touch FPC seat; Wherein, the connection relationship of the second isolation circuit includes: The data output port of the second isolation circuit is respectively connected to the second electrostatic diode circuit of the electrostatic diode circuit and the data output port of the touch FPC seat of the socket circuit, and the clock output port of the second isolation circuit is respectively connected to the second electrostatic diode circuit of the electrostatic diode circuit and the data output port of the touch FPC seat of the socket circuit; Wherein, the connection relationship of the electrostatic diode circuit includes: The electrostatic diode circuit comprises a first electrostatic diode circuit and a second electrostatic diode circuit, wherein the differential positive / differential negative electrode port of the first electrostatic diode is connected to the differential positive / differential negative electrode port of the USB pin socket of the socket circuit.

2. According to claim 1, a capacitive touch screen complex environment anti-interference circuit device is characterized in that: The processing circuit comprises: A first processing circuit and a second processing circuit, wherein the power input end of the first processing circuit is the power input end of the processing circuit, and the power input / output end of the first processing circuit is connected to the power input / output end of the second processing circuit; the startup port of the first processing circuit is connected to the startup port of the communication circuit, the reset port of the first processing circuit is connected to the reset port of the reset circuit, the differential positive / differential negative port of the first processing circuit is connected to the differential positive / differential negative port of the USB pin socket of the socket circuit, the serial clock port / serial data port of the first processing circuit is connected to the serial clock port / serial data port of the second isolation circuit of the isolation circuit; the interrupt signal port of the first processing circuit, the interrupt signal port of the second processing circuit and the interrupt signal port of the first isolation circuit of the isolation circuit are connected.

3. According to claim 2, a capacitive touch screen complex environment anti-interference circuit device is characterized in that: The connection relationship of the second processing circuit includes: The disable port of the second processing circuit is connected to the disable port of the function selection circuit, and the reset port of the second processing circuit is connected to the reset port of the reset circuit.

4. According to claim 2, a capacitive touch screen complex environment anti-interference circuit device is characterized in that: The processing circuit further comprises: The first processing circuit is respectively connected to the second processing circuit, the communication circuit, the reset circuit, the USB pin socket of the socket circuit, the first isolation circuit of the isolation circuit and the second isolation circuit of the isolation circuit; The second processing circuit is connected to the reset circuit and the function selection circuit respectively.

5. The capacitive touch screen complex environment anti-interference circuit device according to claim 1, characterized in that: The positive poles of the output power supplies of all circuits are connected together, and the socket circuit includes a USB pin socket and a touch FPC board.

6. The capacitive touch screen complex environment anti-interference circuit device according to claim 1, characterized in that: The monitoring device operation data, determining and adjusting the interference conditions of each circuit in the device, includes: Acquire real-time data of the operation process of the device, calculate the circuit interference value according to the real-time data combined with preset operation data, determine the interference position of the device according to the circuit interference value, obtain the determination result, generate corresponding adjustment instructions according to the determination result, perform interference adjustment, and obtain the adjustment result.

7. A method for operating the complex environment anti-interference circuit device of a capacitive touch screen as claimed in claim 1, the method comprising: The device is provided with power supply through a power circuit, touch screen signals are received and processed through a processing circuit, circuit interference is isolated through an isolation circuit, static electricity is eliminated through an electrostatic diode circuit and an electrostatic protection circuit, a circuit connected to the device is reset through a reset circuit, a working mode of a second processing circuit of the processing circuit is adjusted through a function selection circuit, a short-circuit operation is performed through a communication circuit, device operation data is monitored, and interference conditions of each circuit in the device are determined and adjusted.

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