A portable communication channel detection device

Abstract

This utility model relates to a portable communication channel detection device, belonging to the field of communication channel detection. It includes a power supply circuit, a main control circuit, a communication circuit, and an HMI touch display circuit. The power supply circuit includes a lithium battery, a charging / discharging chip, a toggle switch, and a TYPE-C multiplexed interface. The main control circuit includes a microcontroller, a microcontroller reset circuit composed of jog buttons, a serial communication chip, and a protection chip, used to implement device program loading, modification, and debugging functions. The communication circuit includes an anti-interference resistor to implement anti-interference function for the HMI touch screen communication circuit, a communication chip with an SPI network communication interface, a 25MHz crystal oscillator, capacitors, resistors, and a power supply chip, enabling communication channel data reading / writing and microcontroller communication functions. The HMI display circuit mainly includes an HMI touch screen and a communication interface, realizing perfect human-machine interaction, reducing the tools carried by repair personnel, significantly improving repair efficiency, and promptly eliminating equipment safety hazards.

Description

Technical Field

[0001] This utility model belongs to the field of communication channel detection, specifically a portable communication channel detection device. Background Technology

[0002] Currently, when communication interruption faults occur in the substation's integrated automation system, repair personnel need to bring tools such as laptops to the site to conduct channel testing. At the same time, temporary power cords need to be provided on site to provide power to the laptops. The amount of preparation work is large, and the on-site fault handling steps are cumbersome, which seriously affects the efficiency of on-site fault handling.

[0003] A similar type of communication channel detection device is disclosed in Chinese patent CN216051926U, which is a portable power communication channel detector, including a voltage detection module, a short-circuit detection module, and a loop detection module. The voltage detection module consists of a voltage signal sampling circuit, an A / D conversion circuit, a microcontroller, and a display circuit. The voltage signal sampling circuit acquires the voltage at the test circuit terminal, the A / D conversion circuit performs analog-to-digital conversion on the acquired voltage signal, and the microcontroller processes the converted digital signal and connects it to the display circuit for output.

[0004] Chinese patent CN2650409Y discloses a communication channel detection device, which includes a digital virtual oscilloscope, channel input / output terminals, a detection channel switching control board, a channel detection power supply, and a channel detection unit. The channel detection unit includes integrated circuits IC1 to IC5 of type 8051, HW9911, 74HC373, 61256, and MAX232.

[0005] The relevant patents have not yet solved the problems of large amounts of preliminary preparation work, the need to equip temporary power supplies on site, and cumbersome troubleshooting procedures, which seriously affect the efficiency of on-site troubleshooting. Utility Model Content

[0006] To address the existing problems in the field, this utility model provides a portable, reliable, and highly efficient communication channel detection device. It is mainly used as a tooling device for detecting the status of communication channels in substation integrated automation systems, and plays a very important role in daily maintenance and fault handling.

[0007] The technical solution adopted by this utility model to achieve the above objectives is as follows: A portable communication channel testing device includes: a communication circuit, a main control circuit, an HMI touch display circuit, a power supply circuit, a debugging interface, and a battery; characterized in that the communication circuit is connected to the main control circuit via an SPI communication interface; the communication interface is connected to the communication circuit via a resistor; the HMI touch display is connected to the main control circuit via a TTL communication interface; the power supply circuit is connected to the communication circuit, the main control circuit, and the HMI touch display; the battery is connected to the power supply circuit, and the debugging interface is connected to the main control circuit and the communication circuit.

[0008] Preferably, in the power supply circuit, the power management chip is connected to the battery, the debugging interface, one end of the SW1 output switch, and the charging / discharging indicator light, respectively, wherein the other end of the SW1 output switch is connected to the 5V output terminal.

[0009] Preferably, the battery is one of lithium battery, nickel-metal hydride battery, lead-acid battery, alkaline battery, and carbon battery.

[0010] Preferably, the power supply circuit includes an LDO chip, which is connected to an input filter capacitor and an output filter capacitor.

[0011] Preferably, the communication chip of the communication section circuit is connected to the communication interface, the power supply chip, the indicator light auxiliary circuit, the mode selection circuit, the SPI communication interface, and the main control chip working circuit, respectively; the communication chip is connected to the main control section circuit via the SPI communication interface.

[0012] Preferably, the communication interface adopts one of the following: RJ45 network communication interface, fiber optic interface, RS232, HDMI, and PLC.

[0013] Preferably, the main control circuit includes an SPI communication interface, a main control chip restart circuit, an SPI debugging interface, a main control chip working circuit, a TTL communication interface, a serial communication chip, a protection chip, and a debugging interface; The debugging interface is connected to one end of the protection chip, the other end of the protection chip is connected to the serial communication chip, and the serial communication chip is connected to the main control chip. The main control chip is connected to the SPI communication interface, the main control chip restart circuit, the SPI debugging interface, the main control chip working circuit, and the TTL communication interface.

[0014] Preferably, the HMI touch display circuit includes an HMI touch screen, which is connected to the main control circuit and the power supply circuit via a TTL communication interface.

[0015] Preferably, the HMI touch display screen is a capacitive touch screen or a resistive touch screen.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model integrates the communication interface, communication circuit, main control circuit, HMI touch screen, power supply circuit, debugging interface, and battery into one unit. It provides a portable, reliable, and highly efficient communication channel testing device. This solves the problems of the original testing method, such as the large amount of pre-testing work and cumbersome on-site fault handling procedures, which seriously affected the efficiency of on-site fault handling.

[0017] 2. The communication channel detection device is characterized by its small size, light weight, and simple operation, making it convenient for emergency repair personnel to carry. At the same time, the device is equipped with a TYPE-C multiplexed interface, which facilitates the charging and discharging of the equipment and solves the technical problem of needing to temporarily provide working power on site.

[0018] 3. The HMI touch screen displays options such as target IP and device IP, which can be set according to actual needs on site. By displaying key data such as communication channel data transmission status, network latency, and data packet loss, it achieves perfect human-machine interaction.

[0019] 4. The power supply circuit of the communication channel detection device includes a voltage regulator circuit, which can provide a stable operating voltage for the communication channel detection device. At the same time, the voltage regulator circuit also includes a fuse and a reverse diode, which can protect the communication channel detection device from being damaged by excessive voltage when the power supply voltage is overloaded, ensuring the stable operation of the communication channel device. Attached Figure Description

[0020] Figure 1 This is a structural block diagram of the present invention; Figure 2 This is a block diagram of the communication circuit of this utility model; Figure 3 This is a block diagram of the main control circuit of this utility model; Figure 4 This is a block diagram of the HMI touch display circuit of this utility model; Figure 5 This is a block diagram of the power supply circuit of this utility model.

[0021] The diagram shows the circuit diagram as follows: 1. Communication circuit; 2. Main control circuit; 3. HMI touch display circuit; 4. Power supply circuit; 1-1 Communication interface; 1-2 Communication chip; 1-3 Power supply chip; 1-4 Indicator light auxiliary circuit; 1-5 Mode selection circuit; 1-6 SPI communication interface; 2-1 Protection chip; 2-2 Serial communication chip; 2-3 Main control chip; 2-4 Main control chip restart circuit; 2-5 SPI debugging interface; 2-6 Main chip working circuit; 2-7 TTL communication interface; 3-1 HMI touch display screen; 3-2 TTL communication interface; 4-1 Battery; 4-2 Debugging interface; 4-3 Power management chip; 4-5 SW1 output switch; 4-6 Charge / discharge indicator light; 4-7 5V output terminal. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 As shown, a portable communication channel testing device mainly includes a communication circuit 1, a main control circuit 2, an HMI touch display circuit 3, a power supply circuit 4, a communication interface 1-1, a debugging interface 4-2, a battery 4-1, and other hardware components. Communication interface 1-1: used to connect to multiple channels of the system under test; Communication circuit 1: used to receive and transmit multiple channel signals transmitted by the communication interface 1-1; Main control circuit 2: Used to receive multiple channel signals transmitted by the communication circuit 1 and to determine the fault channel of the detection system; HMI touch display circuit 3: used to receive the judgment result transmitted by the main control circuit 2 and display the fault channel information; Power supply circuit 4: Used to provide power to communication circuit 1, main control circuit 2 and HMI touch display circuit 3.

[0024] One end of the communication interface 1-1 is connected to the circuit under test, and the other end is connected to one end of the communication circuit 1. The other end of the communication circuit 1 is connected to one end of the main control circuit 2. The other end of the main control circuit 2 is connected to the HMI touch display circuit 3. The power supply circuit 4 is connected to the communication circuit 1, the main control circuit 2 and the HMI touch display circuit 3 respectively. The battery is installed in the power supply circuit 4.

[0025] like Figure 2As shown, the communication circuit includes an RJ45 network communication interface 1-1, a communication chip 1-2 with an RJ45 network communication interface and an SPI interface, a 25MHz crystal oscillator, several capacitors, resistors and a power supply chip 1-3, an auxiliary circuit 1-4 with capacitors, resistors and indicator lights, a mode selection circuit 1-5, an SPI communication interface 1-6, and a main control chip operating circuit 2-7. The RJ45 network communication interface 1-1 is connected to the communication chip 1-2 via a resistor to realize data transmission. The crystal oscillator, capacitors, resistors and the power supply chip 1-3 are connected to the communication chip 1-2 to ensure the normal operation of the communication chip 1-2. The communication chip 1-2 is connected to the main control circuit 2 via the SPI communication interface 1-6 to realize the function of communicating with the main control chip 2-4.

[0026] like Figure 3 The main control circuit shown includes a main control chip 2-3 (AVR microcontroller), a debugging interface 4-2, a protection chip 2-1, a serial communication chip 2-2, an SPI communication interface 1-6, a main control chip restart circuit 2-4, an SPI debugging interface 2-5, a main control chip working circuit 2-6, a TTL communication interface 2-7, a 16MHz crystal oscillator, several capacitors, resistors, diodes, and reserved interfaces. The 16MHz crystal oscillator, several capacitors, and resistors are connected to the main control chip 2-3 (AVR microcontroller) to form the main control chip working circuit 2-6. Diodes, resistors, and a jog button form the main control chip restart circuit 2-4. The debugging interface 4-2, protection chip 2-1, and serial communication chip 2-2 are connected to the main control chip 2-3 (AVR microcontroller) and are used to implement the device program loading, modification, and debugging functions.

[0027] like Figure 4 As shown, the HMI touch display circuit 3 mainly includes an HMI touch screen 3-1, capacitors, resistors and a TTL communication interface 3-2, a communication link anti-interference resistor and a data exchange indicator light, and a 5V power supply for the touch screen. The HMI touch screen 3-1 is connected to the main control circuit 2 and the power supply circuit 4 via capacitors, resistors and the TTL communication interface 3-2, respectively. The screen content mainly includes setting options such as target IP and device IP. Relevant settings can be entered according to actual needs on site, and key data such as communication channel data transmission status, network latency and data packet loss can be displayed.

[0028] like Figure 5As shown, the power supply circuit includes a 3.7V lithium battery 4-1, a debugging interface 4-2, a power management chip 4-3, capacitor and resistor operating circuits, an SW1 output switch 4-5, a charge / discharge indicator light 4-6, a 5V output terminal 4-7, and a TYPE-C multiplexed interface. The capacitors and resistors are connected in series and parallel within the power supply circuit, primarily providing a reliable DC 5V operating power supply for the device. The battery is one of the following: lithium battery, nickel-metal hydride battery, lead-acid battery, alkaline battery, or carbon battery. The power supply circuit also includes a fuse and a reverse diode to protect the stability of the power supply circuit.

[0029] In use, the communication circuit 2 transmits the acquired signals from multiple channels to the main control circuit 2, which then transmits the processed information to the HMI touch display circuit 3 for display. The power supply circuit 4 provides stable power to the communication circuit 1, the main control circuit 2, and the HMI touch display circuit 3.

[0030] The main control circuit 2 can also realize the functions of loading, modifying and debugging device programs. The HMI touch display circuit 3 allows users to set the target IP, device IP and related technical parameters through the screen, and display key data such as communication channel data transmission status, network latency and data packet loss, so as to realize perfect human-machine interaction, reduce the tools carried by emergency repair personnel, greatly improve the efficiency of emergency repair, and promptly eliminate potential equipment safety hazards.

Claims

1. A portable communication channel detection device, comprising: The circuit comprises a communication circuit (1), a main control circuit (2), an HMI touch display circuit (3), a power supply circuit (4), a debugging interface (4-2), and a battery (4-1). The communication circuit (1) is connected to the main control circuit (2) via an SPI communication interface (1-6); the communication circuit (1) is connected to the communication interface (1-1) via a resistor; the main control circuit (2) is connected to the HMI touch display screen (3-1) via a TTL communication interface (3-2); the power supply circuit (4) is connected to the communication circuit (1), the main control circuit (2), and the HMI touch display circuit (3) respectively; the battery (4-1) is connected to the power supply circuit (4), and the debugging interface (4-2) is connected to the main control circuit (2) and the communication circuit (1) respectively.

2. The portable communication channel detection device according to claim 1, characterized in that: The power supply circuit (4) includes a power management chip (4-3), which is connected to the battery (4-1), the debugging interface (4-2), one end of the SW1 output switch (4-5), and the charging and discharging indicator (4-6). The other end of the SW1 output switch (4-5) is connected to the 5V output terminal (4-7).

3. The portable communication channel detection device according to claim 2, characterized in that: The battery (4-1) is a lithium battery, nickel-metal hydride battery, lead-acid battery, alkaline battery or carbon battery.

4. The portable communication channel detection device according to claim 2, characterized in that: The power supply circuit (4) includes an LDO chip, which is connected to the input filter capacitor and the output filter capacitor.

5. The portable communication channel detection device according to claim 1, characterized in that: The communication circuit (1) includes a communication chip (1-2), which is connected to the communication interface (1-1), the power supply chip (1-3), the indicator light auxiliary circuit (1-4), the mode selection circuit (1-5), the SPI communication interface (1-6), and the main control chip working circuit (2-6), respectively. The communication chip (1-2) is connected to the main control circuit (2) via the SPI communication interface (1-6).

6. The portable communication channel detection device according to claim 5, characterized in that: The communication interface (1-1) adopts one of the following: RJ45 network communication interface, fiber optic interface, RS232, HDMI, and PLC.

7. The portable communication channel detection device according to claim 1, characterized in that: The main control circuit (2) includes an SPI communication interface (1-6), a main control chip restart circuit (2-4), an SPI debugging interface (2-5), a main control chip working circuit (2-6), a TTL communication interface (2-7), a serial communication chip (2-2), a protection chip (2-1), and a debugging interface (4-2). The debugging interface (4-2) is connected to one end of the protection chip (2-1), the other end of the protection chip (2-1) is connected to the serial communication chip (2-2), and the serial communication chip (2-2) is connected to the main control chip (2-3). The main control chip (2-3) is connected to the SPI communication interface (1-6), the main control chip restart circuit (2-4), the SPI debugging interface (2-5), the main control chip working circuit (2-6), and the TTL communication interface (2-7), respectively.

8. The portable communication channel detection device according to claim 1, characterized in that: The HMI touch display circuit (3) includes an HMI touch display screen (3-1), which is connected to the main control circuit (2) and the power supply circuit (4) via a TTL communication interface (3-2).

9. A portable communication channel detection device according to claim 8, characterized in that: The HMI touch display (3-1) is a capacitive touch screen or a resistive touch screen.

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