A communication patch panel with integrated signal conditioning

Abstract

The utility model provides a kind of integrated signal modulation's communication adapter plate, mainly for solving the technical problems of insufficient integration of existing communication adapter plate, poor signal integrity when long-distance transmission, significant power consumption and efficiency problem, limited protocol compatibility. The utility model a kind of integrated signal modulation's communication adapter plate, including power module, USB communication module, signal conversion module, DB9 plug-in, AC modulation interface, DC modulation interface. The utility model uses highly integrated mode, the interface of power supply, communication, AD modulation, DC modulation is integrated, only needs to be connected to target equipment in use stage, power supply, communication and modulation can be carried out through this equipment. The design of high integration helps to reduce the loss and interference of signal in transmission process, improve the integrity of signal, especially when long-distance transmission.

Description

Technical Field

[0001] This utility model relates to a communication adapter board, specifically to a communication adapter board with integrated signal modulation. Background Technology

[0002] In modern electronic communication systems, signal modulation and switching technologies constitute the core of data transmission, and their importance is becoming increasingly prominent with the acceleration of digitalization. Currently, the world is experiencing the Fourth Industrial Revolution, with emerging technology fields such as industrial automation, the Internet of Things (IoT), smart homes, and remote monitoring experiencing explosive growth. According to predictions by International Data Corporation (IDC), the number of IoT-connected devices worldwide will reach 41.6 billion by 2025, with a compound annual growth rate of 28.7%. This rapid growth has directly led to the increasing complexity and diversification of communication needs between devices.

[0003] In such a vast interconnected network of devices, communication technology faces unprecedented challenges. Different devices may use completely different signal types. Direct current (DC) signals are common in industrial sensors and control systems; alternating current (AC) signals are widely used in power line communication and home appliances; digital serial ports (such as UART, I2C, and SPI) are the standard interfaces for embedded systems; and standard interfaces such as RS-232 / 485 occupy an important position in the field of industrial automation. The different signal types used by different devices lead to complex and diverse communication needs between devices, making it difficult to achieve efficient and compatible communication connections.

[0004] Integrated signal modulation communication adapter boards are multifunctional interface devices designed to solve this problem. From a technical architecture perspective, communication adapter boards need three core capabilities: first, signal reception and conversion capabilities, able to handle various input signals such as DC / AC; second, communication protocol processing capabilities, supporting standard protocols such as serial communication (UART, RS-232 / 485); and finally, power management capabilities, typically employing a 5V power supply scheme to meet the general needs of embedded systems. Communication adapter boards typically use ASK / FSK modulation, suitable for short-range wireless or power line carrier communication.

[0005] In the existing technology, communication adapter boards are mainly divided into two categories: one is discrete: DC / AC conversion, signal modulation, serial communication and other functions are implemented by multiple independent modules and then integrated through PCB. The other is partially integrated. However, the existing communication adapter boards still have the following shortcomings: (1) Insufficient integration, discrete design leads to large PCB area and high cost; power management, modulation and communication modules are not fully systematized. (2) Poor signal integrity during long-distance transmission, easy to be interfered with during long-distance transmission (such as RS-485 requires an additional terminal matching resistor); impedance matching problem of high-speed signals (such as greater than 25MHz) has not been completely solved. (3) Significant power consumption and efficiency problems, AC-DC conversion efficiency is low (usually <85%), affecting energy efficiency. (4) Limited protocol compatibility, some products only support fixed protocols, making it difficult to adapt to emerging IoT standards (such as MQTT, CoAP). (5) Lack of intelligent management, most products cannot dynamically adjust modulation mode or power strategy.

[0006] The diversity of signal types leads to the complexity of system integration, and there is an urgent need for a solution that can achieve signal compatibility, modulation, and efficient transmission. Utility Model Content

[0007] The purpose of this invention is to solve the technical problems of insufficient integration, poor signal integrity during long-distance transmission, significant power consumption and efficiency issues, and limited protocol compatibility of existing communication adapter boards, and to propose a communication adapter board with integrated signal modulation.

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0009] A communication adapter board with integrated signal modulation is characterized by including a power module, a USB communication module, a signal conversion module, a connector, an AC modulation interface, and a DC modulation interface.

[0010] The power module includes a switch and a power interface; the power interface is used to connect to an external DC 5V power supply during communication and is connected to the power port of the connector.

[0011] The power port of the USB communication module is used to connect to an external power source and to the input terminal of a switch. The output terminal of the switch is connected to the power port of the connector. The switch is used to control the power port of the USB communication module to connect to the connector connection circuit when powered on and to disconnect from the connector connection circuit when communicating.

[0012] The communication port of the USB communication module is used to receive external USB type signals and is connected to the input terminal of the signal conversion module. The signal conversion module is used to convert external USB type signals into serial port type signals. The output terminal of the signal conversion module is connected to the TXD port and RXD port of the connector.

[0013] The AC modulation interface is connected to the AC port of the connector, and the DC modulation interface is connected to the DC port of the DB9 plug-in; the GND port of the DB9 plug-in is grounded.

[0014] The connector is used to plug into a connector adapted to an external main control board to achieve connection with the external main control board and transmit serial port type signals to the main control board.

[0015] Furthermore, the connector uses a DB9 plug.

[0016] Furthermore, the USB communication module adopts a TYPE-C socket; the TYPE-C socket is used to connect to a compatible TYPE-C plug to achieve connection with external power supply and devices;

[0017] The four VBUS pins of the TYPE-C socket serve as the power ports for the USB communication module, connecting to an external power source and also to the input terminals of the switch.

[0018] The DP1 and DN1 pins are used to receive external USB-type signals and are grounded through a spike suppressor, respectively.

[0019] The DP2 and DN2 pins are shorted to the DP1 and DN1 pins respectively, and serve as the communication ports of the USB communication module. They are connected to the input of the signal conversion module to transmit external USB type signals to the signal conversion module.

[0020] Pin CC1 is grounded through resistor R7; pin CC2 is grounded through resistor R8.

[0021] The four SH pins and four GND pins are grounded.

[0022] Furthermore, the signal conversion module includes a CH340G chip;

[0023] The UD+ and UD- pins are connected to the DP2 and DN2 pins of the TYPE-C socket respectively through resistors R3 and R4;

[0024] The TXD and RXD pins are connected to the TXD and RXD ports of the DB9 plug-in via resistors R1 and R2, respectively.

[0025] Pin V3 is grounded through capacitor C10;

[0026] The VCC pin is connected to a 5V power supply and grounded through capacitor C1;

[0027] The GND pin is grounded.

[0028] Furthermore, the power interface includes diodes D1 and D2, inductor L1, and capacitor C2; inductor L1 and capacitor C2 form an LC filter circuit.

[0029] The positive terminal of diode D1 is used to connect to an external DC5V power supply during communication, and the negative terminal is connected to one end of inductor L1. The other end of inductor L1 is connected to the power port of the DB9 plug-in.

[0030] The negative terminal of diode D2 is connected to one end of inductor L1, and the positive terminal is connected to one end of capacitor C2. One end of capacitor C2 is grounded, and the other end of capacitor C2 is connected to the other end of inductor L1.

[0031] Furthermore, the AC modulation interface adopts an SMA interface for AC modulation;

[0032] The DC modulation interface is a DC interface used for DC modulation.

[0033] Furthermore, both resistors R7 and R8 are 5.1kΩ;

[0034] The resistors R1, R2, R3, and R4 are all 0Ω;

[0035] Both capacitors C1 and C10 are 0.1μF.

[0036] The beneficial effects of this utility model are:

[0037] 1. This utility model discloses an integrated signal modulation communication adapter board, comprising a power module, a USB communication module, a signal conversion module, a DB9 plug-in, an AC modulation interface, and a DC modulation interface. This utility model adopts a highly integrated design, integrating the interfaces for power supply, communication, AD modulation, and DC modulation. During use, simply connecting this adapter board to the target device enables power supply, communication, and modulation through that device. This highly integrated design helps reduce signal loss and interference during transmission, improving signal integrity, especially during long-distance transmission.

[0038] 2. This utility model discloses a communication adapter board with integrated signal modulation. The AC modulation interface adopts an SMA interface, which has the characteristics of low input-output insertion loss and is used for AC modulation.

[0039] 3. This utility model provides a communication adapter board with integrated signal modulation, which supports USB type signals through a USB communication module, thereby improving compatibility with other devices and adapting to different communication needs. Attached Figure Description

[0040] Figure 1 This is a schematic block diagram of an embodiment of a communication adapter board with integrated signal modulation according to the present invention;

[0041] Figure 2 This is a circuit diagram of the DB9 plug-in in an embodiment of an integrated signal modulation communication adapter board according to this utility model;

[0042] Figure 3 This is a circuit diagram of the power interface in an embodiment of an integrated signal modulation communication adapter board of this utility model;

[0043] Figure 4 This is a circuit diagram of the USB communication module in an embodiment of a communication adapter board with integrated signal modulation according to this utility model;

[0044] Figure 5 This is a circuit diagram of the signal conversion module in an embodiment of an integrated signal modulation communication adapter board of this utility model;

[0045] Figure 6 This is a test environment connection diagram of the AC modulation interface in an embodiment of an integrated signal modulation communication adapter board of this utility model;

[0046] Figure 7 This is a test result diagram of the AC modulation interface in an embodiment of the communication adapter board with integrated signal modulation according to this utility model. Detailed Implementation

[0047] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0048] This utility model discloses a communication adapter board with integrated signal modulation, such as... Figure 1 , Figure 2 As shown, it includes a power module, a USB communication module, a signal conversion module, a connector, an AC modulation interface, and a DC modulation interface. In this embodiment, the connector uses a DB9 plug-in.

[0049] The power module includes a switch and a power interface; the power interface is used to connect to an external DC 5V power supply during communication and also connects to the power port of the DB9 plug-in. For example... Figure 3 As shown, the power interface includes diodes D1 and D2, inductor L1, and capacitor C2. Inductor L1 and capacitor C2 form an LC filter circuit. The positive terminal of diode D1 is used to connect to an external DC 5V power supply during communication, and the negative terminal is connected to one end of inductor L1. The other end of inductor L1 is connected to the power port of the DB9 plug-in. The negative terminal of diode D2 is connected to one end of inductor L1, and the positive terminal is connected to one end of capacitor C2. The other end of capacitor C2 is connected to the other end of inductor L1.

[0050] The power port of the USB communication module is used to connect to an external power source and to the input terminal of a switch. The output terminal of the switch is connected to the power port of the DB9 plug-in. The switch is used to control the power port of the USB communication module to connect to the DB9 plug-in connection circuit when powered on and to disconnect from the DB9 plug-in connection circuit when communicating.

[0051] The communication port of the USB communication module is used to receive external USB type signals and is connected to the input terminal of the signal conversion module. For example... Figure 4 As shown, the USB communication module uses a Type-C socket. The Type-C socket is used to connect to a compatible Type-C plug, enabling connection to external power and communication devices. The four VBUS pins of the Type-C socket serve as the power ports of the USB communication module, connecting to the external power supply and also to the input of the switch. The DP1 and DN1 pins are used to receive external USB signals and are grounded through a spike suppressor. The spike suppressor provides electrostatic discharge protection and surge protection. Specifically, the spike suppressor consists of two diodes connected in series. The DP2 and DN2 pins are shorted to the DP1 and DN1 pins, respectively, serving as the communication ports of the USB communication module and connecting to the input of the signal conversion module. The CC1 pin is grounded through resistor R7; the CC2 pin is grounded through resistor R8; and the four SH pins and GND pin are grounded. Resistors R7 and R8 are both 5.1kΩ.

[0052] The signal conversion module converts external USB signals into serial port signals. The output of the signal conversion module connects to the TXD and RXD ports of the DB9 plug-in. For example... Figure 5 As shown, the signal conversion module includes a CH340G chip; the UD+ and UD- pins are connected to the DP2 and DN2 pins of the TYPE-C socket respectively through resistors R3 and R4; the TXD and RXD pins are connected to the TXD and RXD ports of the DB9 plug-in respectively through resistors R1 and R2; the V3 pin is grounded through capacitor C10; the VCC pin is connected to a 5V power supply and grounded through capacitor C1; the GND pin is grounded. Resistors R1, R2, R3, and R4 are all 0Ω, and capacitors C1 and C10 are both 0.1μF.

[0053] The DB9 plug-in is used to connect with the DB9 plug-in compatible with the external main control board, enabling connection with the external main control board and transmitting serial port type signals to the main control board.

[0054] The AC modulation interface connects to the AC port of the DB9 plug-in. The AC modulation interface uses an SMA connector, which has low input-output insertion loss and is used for AC modulation. Figure 6As shown, the first SMA interface is connected to the AC port of the DB9 plug-in using a connecting cable. Port 1 of the first SMA interface is connected to the first SMA interface, and port 2 is connected to the AC port of the DB9 plug-in. Figure 7 The graph shown represents the test results. The vertical axis represents gain or loss, in decibels (dB). Positive values ​​indicate gain, and negative values ​​indicate loss. When the SPAN is set below 18 GHz, the reverse transmission coefficient S12 insertion loss from port 2 to port 1 is less than 1.2 dB. The maximum input frequency for the SAM interface can reach 26 GHz.

[0055] The DC modulation interface connects to the DC port of the DB9 plug-in; the GND port of the DB9 plug-in is grounded. The DC signal input to the DC modulation interface itself has no frequency change, its frequency is zero, thus achieving the effect of signal undistortion.

Claims

1. A communications patch panel with integrated signal conditioning, characterized by: Includes power supply module, USB communication module, signal conversion module, connector, AC modulation interface, and DC modulation interface; The power module includes a switch and a power interface; the power interface is used to connect to an external DC 5V power supply during communication and is connected to the power port of the connector. The power port of the USB communication module is used to connect to an external power source and to the input terminal of a switch. The output terminal of the switch is connected to the power port of the connector. The switch is used to control the power port of the USB communication module to connect to the connector connection circuit when powered on and to disconnect from the connector connection circuit when communicating. The communication port of the USB communication module is used to receive external USB type signals and is connected to the input terminal of the signal conversion module. The signal conversion module is used to convert external USB type signals into serial port type signals. The output terminal of the signal conversion module is connected to the TXD port and RXD port of the connector. The AC modulation interface is connected to the AC port of the connector, and the DC modulation interface is connected to the DC port of the DB9 plug-in; the GND port of the DB9 plug-in is grounded. The connector is used to plug into a connector adapted to an external main control board to achieve connection with the external main control board and transmit serial port type signals to the main control board.

2. The communication adapter board with integrated signal modulation according to claim 1, characterized in that: The connector uses a DB9 plug.

3. The communication adapter board with integrated signal modulation according to claim 2, characterized in that: The USB communication module uses a TYPE-C socket; the TYPE-C socket is used to connect to a compatible TYPE-C plug to enable connection with external power sources and devices. The four VBUS pins of the TYPE-C socket serve as the power ports for the USB communication module, connecting to an external power source and also to the input terminals of the switch. The DP1 and DN1 pins are used to receive external USB-type signals and are grounded through a spike suppressor, respectively. The DP2 and DN2 pins are shorted to the DP1 and DN1 pins respectively, and serve as the communication ports of the USB communication module. They are connected to the input of the signal conversion module to transmit external USB type signals to the signal conversion module. Pin CC1 is grounded through resistor R7; pin CC2 is grounded through resistor R8. The four SH pins and four GND pins are grounded.

4. The communication adapter board with integrated signal modulation according to claim 3, characterized in that: The signal conversion module includes a CH340G chip; The UD+ and UD- pins are connected to the DP2 and DN2 pins of the TYPE-C socket respectively through resistors R3 and R4; The TXD and RXD pins are connected to the TXD and RXD ports of the DB9 plug-in via resistors R1 and R2, respectively. Pin V3 is grounded through capacitor C10; The VCC pin is connected to a 5V power supply and grounded through capacitor C1; The GND pin is grounded.

5. The communication adapter board with integrated signal modulation according to claim 4, characterized in that: The power interface includes diodes D1 and D2, inductor L1, and capacitor C2; inductor L1 and capacitor C2 form an LC filter circuit. The positive terminal of diode D1 is used to connect to an external DC5V power supply during communication, and the negative terminal is connected to one end of inductor L1. The other end of inductor L1 is connected to the power port of the DB9 plug-in. The negative terminal of diode D2 is connected to one end of inductor L1, and the positive terminal is connected to one end of capacitor C2. One end of capacitor C2 is grounded, and the other end of capacitor C2 is connected to the other end of inductor L1.

6. A communication adapter board with integrated signal modulation according to any one of claims 1-5, characterized in that: The AC modulation interface adopts an SMA interface for AC modulation. The DC modulation interface is a DC interface used for DC modulation.

7. The communication adapter board with integrated signal modulation according to claim 5, characterized in that: The resistors R7 and R8 are both 5.1kΩ; The resistors R1, R2, R3, and R4 are all 0Ω; Both capacitors C1 and C10 are 0.1μF.

Images