A network device, a network communication method, a device, a system and an electronic device

Abstract

The embodiments of the present application provide a network device, a network communication method, an apparatus, a system and an electronic device, including: a network device, applied to an embedded system, the network device comprising: a single-chip microcomputer, comprising an output port; a wireless signal transceiver, comprising a first interface and a second interface, the first interface and the output port of the single-chip microcomputer being wiredly connected via a bus; a first transformer circuit, connected to the wireless signal transceiver via the second interface, which can simplify the principle circuit and save board space during network mode switching.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a network device, a network communication method, an apparatus, a system, and an electronic device. Background Art

[0002] In the related technology, the existing embedded network application methods are diversified. In the process of converting the embedded network to Ethernet and requiring a wireless module, the existing conversion mode requires an external wireless transceiver module on the platform. For some devices with strict requirements on size and weight and high integration, the independently connected wireless module will take up a certain amount of space, and the information transmission between the wireless transceiver module and the controller needs to be connected through a wired connection. If the wireless module is far away from the controller, a longer cable is required, which will further aggravate the shortage of space resources and increase signal interference.

[0003] Therefore, how to simplify the network switching circuit and save board space has become an urgent problem to be solved. Summary of the invention

[0004] Embodiments of the present application provide a network device, a network communication method, an apparatus, a system and an electronic device. Through some embodiments of the present application, at least the principle circuit can be simplified, thereby saving board layout space.

[0005] In a first aspect, an embodiment of the present application provides a network device for use in an embedded system, wherein the network device comprises: a single-chip microcomputer including an output port; a wireless signal transceiver including a first interface and a second interface, wherein the first interface is wired to the output port of the single-chip microcomputer via a bus; and a first transformer circuit connected to the wireless signal transceiver via the second interface.

[0006] Therefore, the embodiments of the present application save the need to set up a serial port on the original network device by directly connecting the wireless signal transceiver to the single-chip microcomputer, and can omit the level conversion process. Since some embodiments of the present application directly communicate with the single-chip microcomputer through transistor-transistor logic (TTL) level, the switching transmission of Ethernet and wireless transceiver (such as wifi) signals is realized, thereby simplifying the circuit of the network device, saving board space, and eliminating the transmission link of the serial port signal level, reducing interference in the overall signal transmission process.

[0007] In combination with the first aspect, in one embodiment, the network device also includes: a first gating unit and a second gating unit; a wired signal transceiver, which can establish a connection with the single-chip microcomputer through the first gating unit; the first transformer circuit, which can establish a connection with the wired signal transceiver through the second gating unit; wherein the wireless signal transceiver can establish a connection with the single-chip microcomputer through the first gating unit.

[0008] Therefore, the embodiment of the present application uses a selection unit to enable the wired signal transceiver and the wireless signal transceiver to be connected to the single-chip microcomputer in a time-sharing manner, thereby concentrating the two network modes of wired network and wireless network on one network device, thereby realizing two network modes through one network device, simplifying the principle circuit of the original network device and saving board space.

[0009] In combination with the first aspect, in one embodiment, the network device also includes: a third selection unit, which is respectively connected to the first transformer circuit and the wireless signal transceiver; a second transformer circuit, which is respectively connected to the wired signal transceiver and the wireless signal transceiver; the wired signal transceiver includes a first transceiver interface and a second transceiver interface, and is connected to the second transformer circuit through a bus via the first transceiver interface and the second selection unit.

[0010] The embodiment of the present application uses a second transformer circuit to replace the two transformer circuits on the original network device, so that the integrated circuit can simplify the principle circuit while ensuring the functionality; by combining the third network mode with the circuit in the above-mentioned implementation mode and using a selection switch for switching, three network modes can be implemented on a network device through switching, thereby saving board space.

[0011] In combination with the first aspect, in one embodiment, the second voltage conversion circuit includes: a first isolation capacitor; a first pull-up resistor, the first end of the first pull-up resistor and the first end of the first isolation capacitor are connected to point L, and the L point receives the signal of the positive terminal of the signal input; a second pull-up resistor, the first end of the second pull-up resistor and the second end of the first pull-up resistor are connected to point N, and the N point receives the first voltage input from the voltage input terminal; a second isolation capacitor, the first end of the second isolation capacitor and the second end of the second pull-up resistor are connected to point P, and the P point receives the signal of the negative terminal of the signal input; a third pull-up resistor, the second end of the third pull-up resistor and the second end of the second isolation capacitor are connected to point G, and the G point outputs the signal of the negative terminal of the signal output; a fourth pull-up resistor, the second end of the fourth pull-up resistor and the first end of the third pull-up resistor are connected to point Q, and the Q point outputs the second voltage output from the voltage output terminal; wherein the first end of the fourth pull-up resistor and the second end of the first isolation capacitor are connected to point M, and the M point outputs the signal of the positive terminal of the signal output.

[0012] Therefore, the embodiment of the present application uses a pull-up resistor to achieve voltage conversion between the wired signal transceiver and the wireless signal transceiver, and uses an isolation capacitor to ensure that the AC signal passes normally while isolating the DC interference signal, thereby improving the overall performance of the network equipment circuit.

[0013] In combination with the first aspect, in one implementation, the single chip microcomputer is connected to the wireless signal transceiver via a TTL level.

[0014] Therefore, the embodiment of the present application connects the single-chip microcomputer with the wireless signal transceiver through the TTL level, which can omit the transmission link of the serial port signal level and reduce the interference in the overall signal transmission process.

[0015] In combination with the first aspect, in one implementation, the first gating unit, the second gating unit and the third gating unit are dip switches or relays.

[0016] Therefore, the embodiment of the present application can control the gating unit to switch the network mode by manual gating and automatic gating, thereby improving the flexibility of switching the network mode according to actual needs.

[0017] In a second aspect, an embodiment of the present application provides a network communication method, which is applied to the network device described in the first aspect, and the method includes: adjusting the connection state of at least one relay deployed on the network device according to network signal characteristics to switch between different network signals.

[0018] Therefore, the embodiment of the present application uses relays to achieve switching between different network signals in a network device, which can save manual operations and thus achieve automatic control switching.

[0019] In a third aspect, an embodiment of the present application provides a network communication device, comprising: a control unit, configured to adjust the connection state of at least one relay deployed on the network device according to network signal characteristics to switch between different network signals.

[0020] In a fourth aspect, an embodiment of the present application provides a network communication system, the system comprising: a network device, the network device comprising: a single-chip microcomputer, comprising an output port; a wireless signal transceiver, comprising a first interface and a second interface, the first interface being wired to the output port of the single-chip microcomputer via a bus; a first transformer circuit, connected to the wireless signal transceiver via the second interface; a user terminal, used to send instructions to a satellite ground station; and a satellite ground station, used to receive and execute the instructions.

[0021] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory and a bus; the processor is connected to the memory via the bus, and the memory stores computer-readable instructions, which, when executed by the processor, are used to implement the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A system diagram of network communication shown in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of circuit connection relationship of an embedded network to Ethernet implemented by prior art;

[0024] Figure 3 This is a structural diagram of an embedded network to Ethernet converter shown in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of another circuit connection relationship of converting an embedded network to Ethernet implemented in the prior art;

[0026] Figure 5 Another embedded network to Ethernet structure diagram shown in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of circuit connection relationship of another embedded network to Ethernet implemented in the prior art;

[0028] Figure 7 This is another embedded network to Ethernet structure diagram shown in an embodiment of the present application;

[0029] Figure 8 This is an internal structure diagram of a second voltage conversion circuit shown in an embodiment of the present application;

[0030] Fig. 9 This is a diagram showing the internal structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0032] The method steps in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0033] The embodiments of the present application can be applied to a variety of embedded system scenarios that require sending network signals. For example, these scenarios include the process of information interaction between a satellite ground station and a user terminal, in which the satellite ground station needs to receive and execute instructions sent by the user terminal. For example, the user terminal uses the network signal sent by the network device to send instructions (for example, rotation) to the satellite ground station, and the satellite ground station receives and executes the instructions.

[0034] The following takes the information interaction between the satellite ground station and the user terminal as an example to illustrate the problems existing in the network equipment arranged in the related technology. Specifically, in the process of information interaction between the satellite ground station and the user terminal, the embedded network signal needs to be converted into an Ethernet signal. The existing conversion mode requires the installation of a wireless module. For some highly integrated devices, the size and weight are more demanding. The independent wireless module will take up a certain amount of space, and the information transmission between the wireless module and the controller needs to be connected by wire. If the wireless module is far away from the controller, a longer cable is required, which aggravates the shortage of space resources and increases signal interference.

[0035] At least to solve the above problems, some embodiments of the present application provide a network device, which is applied to an embedded system, and the network device includes: a single-chip microcomputer, including an output port; a wireless signal transceiver, including a first interface and a second interface, the first interface and the output port of the single-chip microcomputer are wired via a bus; a first voltage conversion circuit, connected to the wireless signal transceiver via the second interface, which can simplify the principle circuit and save board space during the network mode switching process. It can be understood that the application scenarios of the embodiments of the present application are not limited to this.

[0036] The following will combine Figure 1 A network communication system and network equipment are specifically described.

[0037] Figure 1 The network communication system includes: a network device, wherein the network device includes: a single-chip microcomputer including an output port; a wireless signal transceiver including a first interface and a second interface, wherein the first interface is wiredly connected to the output port of the single-chip microcomputer via a bus; a first voltage conversion circuit connected to the wireless signal transceiver via the second interface; a user terminal for sending instructions to a satellite ground station; and a satellite ground station for receiving and executing the instructions.

[0038] In one embodiment, Figure 1 As shown, a network communication system 100 includes: a network device 200, a satellite ground station 110, and a user terminal 120, wherein the network device 200 is embedded in the device of the satellite ground station 110. When working, in order to control the rotation of the satellite ground station, the user terminal communicates with the network device through the network and sends a rotation instruction, so that the satellite ground station rotates according to the rotation instruction. The user terminal can choose to have a wired connection or a wireless connection with the network device.

[0039] It should be noted that the user terminal may be a laptop computer, a mobile phone, a tablet computer, etc. As an embodiment, when the user terminal is a laptop computer, the laptop computer may choose to connect to the network device by wire or by wireless connection. The laptop computer may connect by wire through a network transformer and send a rotation instruction to the satellite ground station. The laptop computer may also send a rotation instruction to the satellite ground station through a wireless network.

[0040] As another embodiment, when the user terminal is a mobile phone, the mobile phone and the network device send a rotation instruction to the satellite ground station via a wireless network.

[0041] The following describes the technical solutions for converting embedded network to Ethernet in related technologies and the structure of the network device for converting embedded network to Ethernet provided by the present application, so as to reflect the difference between the present application and the existing network devices.

[0042] In order to realize embedded network to Ethernet, such as Figure 2 As shown, in the prior art, the single-chip microcomputer 210 needs to be connected to the wireless signal transceiver 220 through the RS232 serial port 232 and an external cable, and the TTL level needs to be converted into the RS232 serial port level through a level conversion chip. When the wireless signal transceiver receives the signal, it needs to convert the RS232 level into the TTL level through level conversion, and the network transformer 231 performs voltage transformation and output, and the wireless module base plate 301 needs to be externally connected to the single-chip microcomputer, resulting in a waste of space, interference with signal transmission and a waste of electrical resources.

[0043] In view of the above problems, if Figure 3 As shown, the network device 200 applied to the embedded system of the present application includes: a single chip computer 210, a wireless signal transceiver 220 and a first voltage conversion circuit 230.

[0044] The single-chip microcomputer 210 includes an output port a. The wireless signal transceiver 220 includes a first interface b and a second interface c, wherein the first interface b is wiredly connected to the output port a of the single-chip microcomputer 210 via a bus. The first voltage conversion circuit 230 is connected to the wireless signal transceiver 220 via the second interface c.

[0045] In one implementation of the present application, the single chip microcomputer is connected to the wireless signal transceiver via a transistor-transistor logic TTL level.

[0046] The embodiment of the present application integrates the wireless signal transceiver in the related art with the single-chip microcomputer and the first transformer circuit into a network device, omits the level conversion process, directly connects the single-chip microcomputer to the wireless signal transceiver, communicates directly through the TTL level, and saves two MAX3232 chips and external cables.

[0047] It should be noted that a single-chip microcomputer is a chip-level computer that appropriately reduces the frequency and specifications of the central processing unit (CPU) and integrates memory, timers, USB, A / D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD driver circuits on a single chip. Figure 3 The network device shown is the connection mode between the components in the second network mode.

[0048] Therefore, the embodiment of the present application directly connects the wireless signal transceiver to the single-chip microcomputer and integrates them on the same chip, thereby saving the original process for connecting the serial port and omitting the level conversion process. The wireless signal transceiver directly communicates with the single-chip microcomputer through TTL to realize the transmission of Ethernet and wireless signals, thereby simplifying the principle circuit and saving board space. At the same time, it eliminates the transmission link of the serial port signal level and reduces interference in the overall signal transmission process.

[0049] Another implementation method of converting an embedded network to Ethernet is described below by way of example.

[0050] like Figure 4 As shown, in the prior art, the embedded system works in the wired connection device 300, the single chip microcomputer 210 needs to be connected to the wired signal transceiver 310, the wired signal transceiver completes the conversion of the network electrical interface protocol inside, realizes the network signal reception and transmission, and the interface is connected to the network transformer 231 to couple the signal level and output the network signal. However, the wired connection mode makes the way of outputting the network signal single and cannot be changed flexibly.

[0051] In view of the above problems, if Figure 5 As shown, the network device 200 applied to the embedded system of the present application, in one embodiment, further includes: a first gating unit 321 and a second gating unit 322; a wired signal transceiver 310, which can establish a connection with the single-chip microcomputer 210 through the first gating unit 321; the first transformer circuit 230, which can establish a connection with the wired signal transceiver 310 through the second gating unit 322; wherein the wireless signal transceiver 220 can establish a connection with the single-chip microcomputer through the first gating unit.

[0052] The embodiments of this application are based on Figure 3 The network device shown has added a first selection unit and a second selection unit, and integrated the wired signal transceiver in the wired connection mode into the same network device. In other words, a network device can change the connection line on the network device through the selection unit, thereby realizing the mutual conversion between the two network modes.

[0053] In one implementation, the first gating unit, the second gating unit and the third gating unit are dip switches or relays; the dip switches are used for manual gating; and the relays are used for automatic gating.

[0054] It should be noted that Figure 5 The network device shown is the connection mode between various components in the first network mode.

[0055] As a specific embodiment, when the network device switches from the second network mode to the first network mode, the first selection unit switches the code switch from the wireless signal transceiver to the wired signal transceiver, and similarly, the second selection unit switches the code switch from the wireless signal transceiver to the wired signal transceiver, forming a network device as follows: Figure 5 The network device shown, wherein, in the first network mode, the wireless signal transceiver has no connection relationship with other components on the network device, and when the system only needs to work in the first mode, the wireless signal transceiver can be removed.

[0056] As another specific embodiment, when the network device switches from the first network mode to the second network mode, the first selection unit switches the code switch from the wired signal transceiver to the wireless signal transceiver, and the second selection unit switches the code switch from the wired signal transceiver to the wireless signal transceiver, forming a Figure 3 The network devices shown.

[0057] Therefore, the embodiment of the present application uses a gating unit to connect the wired signal transceiver to the single-chip microcomputer, so that the two network modes can be concentrated on one network device, and different electrical circuits can be switched by gating the gating unit, so that one network device can be switched into two network modes, thereby simplifying the principle circuit and saving board space.

[0058] Another implementation method of converting an embedded network to Ethernet is described below by way of example.

[0059] In the prior art, Figure 6 As shown, the wired signal transceiver 310 is connected to the wireless signal transceiver 220 through two network transformer 231 (HR911105A) interfaces to realize network signal transmission. The main function of the network transformer is to achieve impedance matching, filter out common mode interference, and enhance the signal so that it can be transmitted over a longer distance. However, the two network transformers lead to too many components, affecting signal transmission, and the connection wastes cable consumables.

[0060] In view of the above problems, the embodiment of the present application integrates the wireless signal transceiver into the network device, so there are no problems of impedance mismatch and long-distance transmission. Also, because the bias voltage between the wired signal transceiver and the wireless signal transceiver is inconsistent, the network signal cannot be directly connected. To solve the above problems, the embodiment of the present application places a second transformer circuit between the wired signal transceiver and the wireless signal transceiver.

[0061] like Figure 7As shown, in one implementation of the embodiment of the present application, the network device 200 also includes: a third selection unit, which is respectively connected to the first voltage conversion circuit and the wireless signal transceiver; a second voltage conversion circuit 410, which is respectively connected to the wired signal transceiver 310 and the wireless signal transceiver 220; the wired signal transceiver 310 includes a first transceiver interface f and a second transceiver interface e, and is connected to the second voltage conversion circuit 410 through a bus via the first transceiver interface f and the second selection unit 322.

[0062] It should be noted that Figure 7 The network device shown is the connection mode between various components in the third network mode.

[0063] The embodiments of this application are based on Figure 5 The network device shown in the figure has added a second transformer circuit 410 and a third gating unit 323, and the network mode is converted through the first gating unit, the second gating unit and the third gating unit. In other words, a network device can change the connection lines on the network device through the gating unit, thereby realizing the mutual conversion of the three network modes.

[0064] As a specific embodiment, when the network device is converted from the third network mode to the first network mode, the microcontroller remains connected to the wired signal transceiver through the first selection unit, the second selection unit is disconnected from the second transformer circuit and connected to the first transformer circuit, and the third selection unit is disconnected from the wireless signal transceiver.

[0065] As another specific embodiment, when the network device is converted from the third network mode to the second network mode, the first selection unit is disconnected from the wired signal transceiver and connected to the wireless signal transceiver, and the second selection unit is disconnected from the second transformer circuit.

[0066] Therefore, the embodiment of the present application uses a second transformer circuit to replace the original two transformer circuits, which can simplify the principle circuit of the integrated circuit while ensuring its functionality; by merging the third network mode with the circuit in the above-mentioned implementation method and using a selection switch for switching, it is possible to achieve a network device that can switch between three network modes, thereby saving board space.

[0067] like Figure 8As shown, in one implementation of the embodiment of the present application, the second voltage conversion circuit 410 includes: a first pull-up resistor 511, a first end g of the first pull-up resistor 511 and a first end t of the first isolation capacitor 521 are connected to a point L, and the point L receives a signal from a positive terminal 531 of the signal input; a second pull-up resistor 512, a first end i of the second pull-up resistor 512 and a second end h of the first pull-up resistor 511 are connected to a point N, and the point N receives a first voltage input from a voltage input terminal 532; a second isolation capacitor 522, a first end s of the second isolation capacitor 522 and a second end j of the second pull-up resistor 512 are connected to a point P Point P receives the signal of the signal input negative terminal 533; a third pull-up resistor 514, the second end q of the third pull-up resistor is connected to the second end of the second isolation capacitor 522 at point G, and the G point outputs the signal of the signal output negative terminal 536; a fourth pull-up resistor 513, the second end m of the fourth pull-up resistor 513 is connected to the first end n of the third pull-up resistor 514 at point Q, and the Q point outputs the second voltage output by the voltage output terminal 535; the first end l of the fourth pull-up resistor 513 is connected to the second end u of the first isolation capacitor 521 at point M, and the M point outputs the signal of the signal output positive terminal 534.

[0068] In one implementation, the signal can be output from the signal input positive terminal 531 and the signal input negative terminal 533 , and input from the signal output positive terminal 534 and the signal output negative terminal 536 .

[0069] As a specific embodiment, the wired signal transceiver DM9000EP is a voltage-type driver, and the bias voltages of the wired signal transceiver and the wireless signal transceiver are inconsistent (the communication voltage of the wired signal transceiver is 3.3V, and the wireless signal transceiver is 1.8V), so the signal cannot be directly connected. Since the network signal is a high-frequency AC signal, it can be considered to be separated by an isolation capacitor in the middle. First, it can ensure the normal passage of the current of the AC signal, thereby realizing the conversion between 3.3V and 1.8V through an external pull-up resistor, and second, it can play a role in isolating DC interference signals. Considering the driving capability and impedance matching requirements of the wired signal transceiver and the wireless signal transceiver, a first isolation capacitor of 0.1uF is placed between the positive terminal of the signal input and the positive terminal of the signal output, and a second isolation capacitor of 0.1uF is placed between the negative terminal of the signal input and the negative terminal of the signal output; a first pull-up resistor of 49.9Ω is placed between the positive terminal of the signal input and the voltage input terminal, a second pull-up resistor of 49.9Ω is placed between the voltage input terminal and the negative terminal of the signal input, a third pull-up resistor of 33Ω is placed between the negative terminal of the signal output and the voltage output terminal, and a fourth pull-up resistor of 33Ω is placed between the voltage output terminal and the positive terminal of the signal output.

[0070] Therefore, the embodiment of the present application uses a pull-up resistor to achieve voltage conversion between the wired signal transceiver and the wireless signal transceiver, and uses an isolation capacitor to ensure that the AC signal passes normally while also isolating the DC interference signal.

[0071] A specific embodiment of a network device is described above, and a network communication method will be described below.

[0072] In one embodiment, a network communication method is applied to a network device, comprising: adjusting a connection state of at least one relay deployed on the network device according to network signal characteristics to switch between different network signals.

[0073] In the embodiment of the present application, a network device is used to switch between three network modes, and the connection status of a relay can be used to switch between different network modes and signals.

[0074] A network communication device will be described below.

[0075] In one embodiment, a network communication device includes: a control unit configured to adjust the connection state of at least one relay deployed on the network device according to network signal characteristics to switch between different network signals.

[0076] In the embodiment of the present application, the control unit in the network communication device can implement each process in the network communication method embodiment. For details, please refer to the description in the above method embodiment. To avoid repetition, the detailed description is appropriately omitted here.

[0077] like Fig. 9 As shown, an embodiment of the present application further provides an electronic device 600, including: a processor 610, a memory 620 and a bus 630, wherein the processor is connected to the memory via the bus, and the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, they are used to implement the methods described in all the above embodiments. For details, please refer to the description in the above method embodiments. To avoid repetition, the detailed description is appropriately omitted here.

[0078] Among them, the bus is used to realize the direct connection and communication of these components. Among them, the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0079] The memory may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in the above embodiment may be executed.

[0080] Understandably, Fig. 9 The structure shown is for illustration only and may also include Fig. 9 More or fewer components as shown, or with Fig. 9 Different configurations are shown. Fig. 9 Each component shown in the figure can be implemented by hardware, software or a combination thereof.

[0081] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a server, the methods described in all the above-mentioned embodiments are implemented. For details, please refer to the description in the above-mentioned method embodiments. To avoid repetition, the detailed description is appropriately omitted here.

[0082] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0083] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A network device, applied to an embedded system, characterized in that: The network equipment includes: A microcontroller, including an output port; A wireless signal transceiver, comprising a first interface and a second interface, wherein the first interface is connected to an output port of the single-chip microcomputer via a transistor-transistor logic TTL level; A first voltage conversion circuit connected to the wireless signal transceiver via the second interface; A first gating unit and a second gating unit; A wired signal transceiver, which can establish a connection with the single-chip microcomputer through the first gating unit; The first voltage conversion circuit can establish a connection with the wired signal transceiver through the second gating unit; Wherein, the wireless signal transceiver can establish a connection with the single chip microcomputer through the first gating unit; A third gating unit is connected to the first voltage conversion circuit and the wireless signal transceiver respectively; A second voltage conversion circuit is connected to the wired signal transceiver and the wireless signal transceiver respectively; The wired signal transceiver includes a first transceiver interface and a second transceiver interface, and is connected to the second voltage conversion circuit through a bus via the first transceiver interface and the second selection unit.

2. The network device according to claim 1, characterized in that: The second voltage transformation circuit comprises: A first isolation capacitor; A first pull-up resistor, wherein a first end of the first pull-up resistor and a first end of the first isolation capacitor are connected to a point L, and the point L receives a signal from a positive terminal of a signal input; A second pull-up resistor, wherein a first end of the second pull-up resistor and a second end of the first pull-up resistor are connected to a point N, and the point N receives a first voltage input from the voltage input terminal; A second isolation capacitor, wherein a first end of the second isolation capacitor and a second end of the second pull-up resistor are connected to a point P, and the point P receives a signal from a negative terminal of the signal input; A third pull-up resistor, a second end of the third pull-up resistor and a second end of the second isolation capacitor are connected to point G, and the output signal of the point G outputs a signal at the negative end; a fourth pull-up resistor, wherein the second end of the fourth pull-up resistor and the first end of the third pull-up resistor are connected to a Q point, and the Q point outputs the second voltage output by the voltage output end; The first end of the fourth pull-up resistor and the second end of the first isolation capacitor are connected to point M, and the point M outputs a signal at the positive terminal.

3. The network device according to claim 1, characterized in that: The single chip microcomputer is connected to the wireless signal transceiver via a TTL level.

4. The network device according to claim 1, characterized in that: The first gating unit, the second gating unit and the third gating unit are dip switches or relays.

5. A network communication method, applied to the network device as claimed in claim 1, characterized in that: The method comprises: The connection state of at least one relay arranged on the network device is adjusted according to the network signal characteristics to switch between different network signals.

6. A network communication device, characterized in that: The device comprises: The control unit is configured to adjust the connection state of at least one relay deployed on the network device as claimed in claim 1 according to the network signal characteristics to switch between different network signals.

7. A network communication system, characterized in that: The system comprises: The network device according to claim 1; User terminal, used to send instructions to the satellite ground station; The satellite ground station is used to receive and execute the instructions.

8. An electronic device, characterized in that: include: processor, memory, and bus; The processor is connected to the memory via the bus, and the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, they are used to implement the method according to claim 5.

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