Multi-channel composite communication device and system

Abstract

The utility model discloses a multichannel composite communication device and system, including: network interface, network transformer, serial port level switch module and processor wherein the network interface has a plurality of differential pin pair, the plurality of differential pin pair includes two first differential pin pair and at least one second differential pin pair, the first differential pin pair includes two first differential pin pair, and the second differential pin pair includes two second differential pin pair. The processor is connected with the two first differential pin pairs through a network transformer; the processor is connected with the at least one second differential pin pair through the serial port level conversion module; and the serial port level conversion module is used for converting the digital logic level signal output by the processor into a serial port level signal. Two pairs of first differential pins in the network interface are used as network communication pins, and at least one pair of second differential pins in the network interface are used as serial port communication pins, so that network signal transmission and serial port signal transmission are realized at the same time by using the same network interface.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to a multi-channel composite communication device and system. Background Art

[0002] In order to facilitate the interaction and communication with external devices, existing communication devices often have multiple interfaces. For example, there are network interfaces, serial ports, etc. to meet various communication requirements. However, in some scenarios, such as the controllable nuclear fusion scenario, there are many control devices and data to be collected. Therefore, multiple different types of interfaces and multiple interfaces are required to achieve communication. If each interface uses a dedicated communication interface, the types and quantities of interfaces at the control device end will be numerous, occupying the space of the control device and causing waste of interface resources.

[0003] Therefore, how to effectively merge different types of communication interfaces, reduce the number of interfaces, and improve the integration and reliability of devices has become a technical problem to be solved urgently. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-channel composite communication device and system to solve the technical problem of how to effectively merge different types of communication interfaces, reduce the number of interfaces, and improve the integration and reliability of devices in the prior art.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme:

[0006] According to the first aspect, the utility model provides a multi-channel composite communication device, including: a network interface, a network transformer, a serial port level conversion module, and a processor. Among them, the network interface has multiple differential pin pairs, and the multiple differential pin pairs include two first differential pin pairs and at least one second differential pin pair. The processor is connected to the two first differential pin pairs through the network transformer; and the processor is connected to the at least one second differential pin pair through the serial port level conversion module; the serial port level conversion module is used to convert the digital logic level signal output by the processor into a serial port level signal.

[0007] In one embodiment, the network interface and the serial port level conversion module, and the network interface and the network transformer are connected through differential lines.

[0008] In one embodiment, the level conversion module includes a level conversion chip, which has an enable terminal, a first signal transmission terminal, and a second signal transmission terminal. Among them, the enable terminal is connected to the enable signal output terminal of the processor, the first signal transmission terminal is connected to the digital logic level signal output terminal of the processor, and the second signal output terminal is connected to the second differential pin pair.

[0009] In one embodiment, the second signal transmission terminal includes a first pin and a second pin. The first pin is connected to an auxiliary power supply through a pull-up resistor, and the second pin is grounded through a pull-down resistor.

[0010] In one embodiment, the resistance values of the pull-up resistor and the pull-down resistor are both less than or equal to 1 KΩ.

[0011] In one embodiment, the network interface includes an RJ45 interface.

[0012] In one embodiment, the network interface includes a POE network port.

[0013] In one embodiment, the serial port level conversion module includes: an RS485 level conversion module or an RS422 level conversion module.

[0014] According to a second aspect, an embodiment of the present application provides a multi-channel composite communication system, which includes at least two multi-channel composite communication devices as described in the first aspect above; wherein, one of the multi-channel composite communication devices is a host, and the other multi-channel composite communication device is a slave. The network interfaces of the host and the slave are connected through corresponding multi-core cables.

[0015] In one embodiment, the multi-core cable includes an eight-core twisted pair network cable. Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0016] In this utility model, two pairs of first differential pins in the network interface are used as network communication pins, and at least one pair of second differential pins in the network interface are used as serial communication pins, so as to simultaneously implement the transmission of network signals and serial signals by using the same network interface. The network communication is realized by connecting two pairs of first differential pins in the network interface to a processor through a network transformer. At the same time, at least one pair of second differential pins in the network interface are used to convert the digital logic level signal output by the processor into a serial level signal through a serial level conversion module, or convert the serial level signal received by the first differential pins into a digital logic level signal, and the second differential pins in the network interface are used as serial communication pins to realize serial communication. It can effectively reduce the number of wire harness requirements in scenarios that require both network communication and serial communication at the same time, improve the system integration degree, and make the communication device simple, concise, highly reliable and effectively reduce costs. At the same time, the network interface cooperates with the corresponding cable to simultaneously transmit network signals and serial signals, which can be suitable for long-distance signal transmission, ensure signal quality, and the interface is firm and reliable, adapting to complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings.

[0018] Figure 1 It is a modular schematic diagram of a multi-channel composite communication device of the present utility model;

[0019] Figure 2 It is a modular schematic diagram of another multi-channel composite communication device of the present utility model;

[0020] Figure 3 It is a modular schematic diagram of a multi-channel composite communication device with a circuit board of the present utility model;

[0021] Figure 4 It is a circuit principle schematic diagram of the serial level conversion module of the present utility model;

[0022] Figure 5 It is a modular schematic diagram of a multi-channel composite communication system of the present utility model.

[0023] Description of the reference numerals: 10, network interface; 11, first differential pin pair; 12, second differential pin pair; 20, network transformer; 30, serial level conversion module; 31, first signal transmission end; 32, second signal transmission end; A, first pin; B, second pin; R1, pull-up resistor; R2, pull-down resistor; 40, processor; 50, PHY chip; 60, circuit board; 61, differential line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams rather than physical diagrams, and should not be construed as a limitation to this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0025] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] In the description of the present utility model, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] As Figure 1 shown, a multi-channel composite communication device disclosed by the present utility model includes: a network interface 10, a network transformer 20, a serial port level conversion module 30, and a processor 40. Among them, the network interface 10 has a plurality of differential pin pairs, and the plurality of differential pin pairs include two first differential pin pairs and at least one second differential pin pair. The processor 40 is connected to the two first differential pin pairs 11 through the network transformer 20; and the processor 40 is connected to at least one second differential pin pair 12 through the serial port level conversion module 30; the serial port level conversion module 30 is used to convert the digital logic level signal output by the processor 40 into a serial port level signal.

[0028] In this embodiment, two first differential pin pairs 11 in the network interface 10 are used as network communication pins, and one second differential pin pair 12 in the network interface 10 is used as a serial communication pin, so as to simultaneously implement network signal transmission and serial port signal transmission using the same network interface 10. Specifically, two first differential pin pairs 11 in the network interface 10 are connected to the processor 40 through a network transformer 20 to implement network communication. At the same time, at least one second differential pin pair 12 in the network interface 10 is used to convert the digital logic level signal output by the processor 40 into a serial port level signal through a serial port level conversion module 30, or convert the serial port level signal received by the first differential pin pair 11 into a digital logic level signal. The second differential pin pair 12 in the network interface 10 is used as a serial communication pin to implement serial communication. It can effectively reduce the number of wire harness requirements in scenarios that require both network communication and serial communication at the same time, improve the system integration degree, and make the communication device simple, concise, highly reliable, and effectively reduce costs. At the same time, the network interface 10 cooperates with the corresponding cable to simultaneously transmit network signals and serial port signals, which can be suitable for long-distance signal transmission, ensure signal quality, and the interface is firm and reliable, adapting to complex environments. In one embodiment, as Figure 2 shown, a PHY chip 50 may also be connected between the processor 40 and the network transformer 20.

[0029] In one embodiment, the network interface 10 may be a gigabit network interface 10 or may also be a hundred-megabit network interface 10.

[0030] In one embodiment, the multi-channel composite communication device can be used as a host to connect the network interface 10 with the network interface 10 in a slave or controlled device through a multi-core cable, so as to simultaneously communicate network signals and serial port signals between the host and the slave.

[0031] In one embodiment, in the network interface 10 of the slave or controlled device, there are also a first differential pin pair 11 connected to the network transformer 20 and a second differential pin pair 12 connected to the serial port level conversion module 30. Network communication of the slave is implemented through the network transformer 20, and serial port signal communication of the slave is implemented through the serial port level conversion module 30, so as to interact with the host and implement simultaneous communication of network signals and serial port signals between the host and the slave.

[0032] In one embodiment, the network interface 10 may include multi-pin network interfaces 10 such as RJ45 and RJ50. In this embodiment, taking the RJ45 interface in a hundred-megabit network communication scenario as an example for explanation, in this embodiment, the RJ45 interface is a network interface 10 without a network transformer 20, and a network transformer 20 is separately configured for the second differential pin pair 12 for network communication to avoid affecting serial communication.

[0033] The RJ45 interface has eight pins, and the eight pins are 4 pairs of differential pins. Among them, two first differential pin pairs 11 can be fixedly used as network communication pins and are connected to the network transformer 20 to achieve network communication. Among them, at least one of the other two second differential pin pairs 12 can be used as serial communication pins. By connecting with the serial port level conversion module 30, digital logic level signals such as TTL level signals or CMOS level signals are converted into serial port signals to achieve serial port signal transmission. Cooperating with the network cable corresponding to the RJ45 interface, it is possible to simultaneously achieve 100M Ethernet communication with the controlled device and at least one group of serial communication through only one network cable.

[0034] In one embodiment, between the network interface 10 and the serial port level conversion module 30, and between the network interface 10 and the network transformer 20, they are connected by differential lines to improve the signal transmission quality. In an alternative embodiment, the differential lines can use differential cables. In another alternative embodiment, as Figure 3 shown, the network interface 10, the network transformer 20, the serial port level conversion module 30 and the processor 40 can be integrally arranged on a circuit board 60. Among them, the differential line 61 can be realized by laying copper wires in a differential form on the circuit board 60 to improve the integration degree of the device.

[0035] In one embodiment, as Figure 4 shown, the serial port level conversion module 30 includes a level conversion chip U1. The level conversion chip U1 has an enable end, a first signal transmission end 31 and a second signal transmission end 32. Among them, the enable end is connected to the enable signal output end of the processor 40, the first signal transmission end 31 is connected to the digital logic level signal output end of the processor 40, and the second signal output end is connected to the second differential pin pair 12. In this embodiment, the level conversion chip U1 can use a level conversion chip U1 corresponding to the serial port signal protocol. In this embodiment, the serial port signal can include RS485 signal or RS422 signal. In this embodiment, the RS485 signal can be taken as an example for illustration, and the corresponding level conversion chip U1 can use an RS485 level conversion chip U1. As Figure 4As shown, the enable terminal of the level conversion chip U1 is connected to the enable signal output terminal of the processor 40. The enable signal output by the enable signal output terminal controls the level conversion chip U1 to convert the digital logic level signal into a serial port signal output mode and receive the serial port signal and convert it into a digital logic level signal reception mode; the first signal transmission terminal 31 is used as the input / output terminal of the digital logic level signal and is connected to the input / output terminal of the digital logic level signal of the processor 40; the second signal transmission terminal 32 is used as the input / output terminal of the serial port level signal and is connected to the second differential pin pair 12 of the network interface 10. Further, serial port signal interaction can be performed between the slave device through the network port and the network cable connected to the network port, realizing serial port communication.

[0036] In one embodiment, the second signal transmission terminal 32 includes a first pin A and a second pin B. The first pin A is connected to the auxiliary power supply through a pull-up resistor R1, and the second pin B is grounded through a pull-down resistor R2. Among them, the first pin A can input / output the positive signal in the differential signal, and the second pin B can output / input the negative signal in the differential signal. In one embodiment, the pull-up resistor R1 and the pull-down resistor R2 can adopt resistors with a resistance value less than 10KΩ. For example, a 4.7KΩ resistor can be used as the pull-up resistor R1 and the pull-down resistor R2.

[0037] In another embodiment, in order to improve the transmission quality of the serial port signal and perform serial port communication with better signal waveforms and higher communication speeds, the resistance values of the pull-up resistor R1 and the pull-down resistor R2 are set to be less than or equal to 1KΩ. If the resistance values of the pull-up resistor R1 and the pull-down resistor R2 are too large, when the level changes, the rising edge speed is slower. Therefore, at higher rates, it not only affects the communication rate but even causes signal distortion. Therefore, in this embodiment, the resistance values of the pull-up resistor R1 and the pull-down resistor R2 are set to be less than or equal to 1KΩ to increase the rate of the rising edge and improve the high-frequency communication performance.

[0038] In one embodiment, the network interface 10 can include a POE network port to supply power to the slave device through POE. It is possible to realize the power supply of the host and the slave device without an additional power supply, eliminating the need to configure a power cord, reducing the equipment cost and the complexity of equipment installation. Using POE also has the ability to remotely power on and off.

[0039] This application also provides a multi-channel composite communication system, as Figure 5 shown, including at least two multi-channel composite communication devices described in the above embodiments; among them, one of the multi-channel composite communication devices is the host 100, and the other multi-channel composite communication device is the slave 200. The network interfaces 10 of the host 100 and the slave 200 are connected through corresponding multi-core cables 300.

[0040] In one embodiment, the multi-core cable 300 includes an eight-core twisted pair network cable.

[0041] The above-described embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-channel composite communication device, characterized in that: Comprising: A network interface, a network transformer, a serial port level conversion module, and a processor, wherein the network interface has a plurality of differential pin pairs, the plurality of differential pin pairs includes two first differential pin pairs and at least one second differential pin pair, the processor is connected to the two first differential pin pairs through the network transformer; and the processor is connected to the at least one second differential pin pair through the serial port level conversion module; the serial port level conversion module is configured to convert the digital logic level signal output by the processor into a serial port level signal.

2. The multi-channel composite communication device according to claim 1, wherein Between the network interface and the serial port level conversion module, and between the network interface and the network transformer are connected by differential lines.

3. The multi-channel composite communication device according to claim 1, characterized in that, The level conversion module includes a level conversion chip, the level conversion chip has an enable terminal, a first signal transmission terminal, and a second signal transmission terminal, wherein the enable terminal is connected to the enable signal output terminal of the processor, the first signal transmission terminal is connected to the digital logic level signal output terminal of the processor, and the second signal transmission terminal is connected to the second differential pin pair.

4. The multi-channel composite communication device according to claim 3, wherein The second signal transmission terminal includes a first pin and a second pin, the first pin is connected to an auxiliary power supply through a pull-up resistor, and the second pin is grounded through a pull-down resistor.

5. The multi-channel composite communication device according to claim 4, wherein The resistance values of the pull-up resistor and the pull-down resistor are both less than or equal to 1KΩ.

6. The multi-channel composite communication device according to claim 1, characterized in that, The network interface includes an RJ45 interface.

7. The multi-channel composite communication device according to claim 1, characterized in that, The network interface includes a POE network port.

8. The multi-channel composite communication device according to claim 1, characterized in that, The serial port level conversion module includes: An RS485 level conversion module or an RS422 level conversion module.

9. A multi-channel composite communication system, characterized in that Including the multi-channel composite communication device according to any one of claims 1 to 8; there are at least two of the multi-channel composite communication devices, wherein one of the multi-channel composite communication devices is a host, and the other multi-channel composite communication device is a slave, and the network interfaces of the host and the slave are connected through corresponding multi-core cables.

10. The multi-channel composite communication system according to claim 9, characterized in that, The multi-core cable includes an eight-core twisted pair network cable.

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