Communication equipment and communication method

Abstract

The invention provides communication equipment and a communication method. The communication equipment comprises a display unit and a main control station, the main control station comprises a plurality of communication units and a control unit; for each communication unit, the communication unit is connected with one control unit; the display unit is connected with the communication unit through a communication link; the control unit detects components of the control unit to obtain detection data; and the processing unit is used for processing the detection data and sending the processed detection data to the communication unit. And the communication unit sends the processed detection data to a display unit through a communication link, so that the display unit performs component state display based on the processed detection data. Direct communication with the display unit is achieved through the communication unit, the data transmission process is simplified, and the utilization rate of the internal space of the unit is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant safety-class control systems, and in particular, to a communication device and a communication method. Background Art

[0002] A nuclear power plant safety-class control system refers to an instrument control system in which system failures or malfunctions may cause excessive radiation exposure to plant personnel or the public in the nuclear power plant area and prevent unacceptable consequences caused by anticipated operational events.

[0003] In the prior art, for the safety display unit to communicate with the master control station, it needs to pass through a ring network communication module. The ring network communication module and the optical bypass module have a one-to-one correspondence relationship. That is to say, the safety display unit is connected to the master control station through the optical bypass module and the ring network communication module. Since each ring network communication module requires an optical bypass module, it results in a relatively high cost and a decrease in the utilization rate of the internal space of the unit. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a communication device and a communication method to solve the problems of relatively high cost and decreased utilization rate of the internal space of the unit existing in the prior art.

[0005] To achieve the above object, embodiments of the present invention provide the following technical solutions:

[0006] A first aspect of an embodiment of the present invention shows a communication device, and the communication device includes a display unit and a master control station;

[0007] The master control station includes a plurality of communication units and a control unit;

[0008] For each communication unit, the communication unit is connected to one of the control units;

[0009] The display unit is connected to the communication unit through a communication link;

[0010] The control unit detects its own components to obtain detection data; processes the detection data, and sends the processed detection data to the communication unit;

[0011] The communication unit sends the processed detection data to the display unit through the communication link so that the display unit can display the component status based on the processed detection data.

[0012] Optionally, the control unit processes the detection data and sends the processed detection data to the communication unit, including:

[0013] The control unit summarizes the detection data of each component;

[0014] For the detection data of each component, determine whether the detection data indicates a fault;

[0015] If a fault is indicated, send the detection data indicating the fault to the communication unit.

[0016] Optionally, the control unit includes an IO communication unit and a main processing unit;

[0017] The IO communication unit and the main processing unit are connected through a backplane bus;

[0018] The communication unit is connected to the main processing unit through the backplane bus.

[0019] Optionally, the main processing unit is in a hot standby redundant state.

[0020] Optionally, the display unit has a built-in communication module.

[0021] Optionally, the communication unit is a point-to-point communication unit.

[0022] Optionally, the communication unit includes a data link layer and a processing layer;

[0023] When the processing layer receives a connection request input by the user based on the main control station, search for the device corresponding to the connection request;

[0024] If the device is a display unit, establish a connection between the communication link of the data link layer and the display unit based on the device information in the connection request.

[0025] Optionally, the connection of the communication unit to other main control stations;

[0026] The data link layer in the communication unit is connected to the data link layer in the communication unit under other main control stations.

[0027] Optionally, the connection of the data link layer in the communication unit to the data link layer in the communication unit under other main control stations includes:

[0028] If the device is another main control station, send a request frame to the communication unit under the other main control station through a wireless network based on the connection request, so that the communication unit under the other main control station can verify based on the request frame;

[0029] If a return frame feedback by the communication unit under the other main control station is received, construct a connection between the data link layer and the data link layer in the other main control station based on the device IP address of the device information in the connection request and its own IP address, so that the communication unit is connected to the communication unit of the other main control station.

[0030] A second aspect of the embodiments of the present invention discloses a communication method, which is applied to the communication device described in any one of the first aspects of the embodiments of the present invention. The communication device includes a display unit and a main control station. The method includes:

[0031] The control unit of the main control station detects its own components to obtain detection data;

[0032] The control unit of the main control station processes the detection data and sends the processed detection data to the communication unit of the main control station;

[0033] The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit can display the component status based on the processed detection data.

[0034] Based on the communication device and communication method provided in the above embodiments of the present invention, the communication device includes a display unit and a main control station; the main control station includes a plurality of communication units and a control unit; for each communication unit, the communication unit is connected to one of the control units; the display unit is connected to the communication unit through a communication link; the control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit. The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit can display the component status based on the processed detection data. In the embodiments of the present invention, direct communication with the display unit is achieved through the communication unit, simplifying the data transmission process to improve the utilization rate of the internal space of the unit; the control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit. The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit can display the component status based on the processed detection data, improving the efficiency and reliability of data transmission; avoiding cost waste caused by the addition of multiple additional optical bypass module devices. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0036] Figure 1 It is a schematic diagram of the architecture of a communication device shown in the embodiments of the present invention;

[0037] Figure 2 Schematic diagram of the architecture of the main control station shown in the embodiments of the present invention;

[0038] Figure 3 Schematic diagram of the architecture of the control unit shown in the embodiments of the present invention;

[0039] Figure 4 Schematic diagram of the architecture of the communication unit shown in the embodiments of the present invention;

[0040] Figure 5 Schematic diagram of the architecture of another communication device shown in the embodiments of the present invention;

[0041] Figure 6 Schematic diagram of the flow of a communication method shown in the embodiments of the present invention. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described here can be implemented in an order other than that shown or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0044] It should be noted that the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0045] In this application, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0046] As can be seen from the background art, in the prior art, for the safety display unit to communicate with the master control station, it needs to pass through the ring network communication module, and there is a one-to-one correspondence between the ring network communication module and the optical bypass module. That is to say, the safety display unit is connected to the master control station through the optical bypass module and the ring network communication module. Since each ring network communication module requires an optical bypass module, this results in a relatively high cost. Moreover, the dual setting of the ring network communication module and the optical bypass module may increase the complexity of the system, making it more difficult to troubleshoot and maintain the system. Designers and operators need to be familiar with more components and connection methods. This further leads to a decrease in the utilization rate of the internal space of the unit.

[0047] In the embodiment of the present invention, direct communication with the display unit is achieved through the communication unit, simplifying the data transmission process. The control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit. The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit can display the component status based on the processed detection data, thereby improving the efficiency and reliability of data transmission; avoiding cost waste caused by the addition of multiple extra optical bypass module devices, and improving the utilization rate of the internal space of the unit.

[0048] See Figure 1 , which is a schematic diagram of the architecture of the communication system shown in the embodiment of the present invention.

[0049] The communication system is a communication system between the main control station 100 and the display unit 200, mainly used for equipment control and display in small and medium-sized projects.

[0050] The communication system includes a main control station 100 and a display unit 200;

[0051] Among them, the display unit 200 is a safety display unit and is a safety instrument.

[0052] The number of the main control stations 100 is multiple, and each is connected to a corresponding nuclear power equipment, such as a nuclear-grade chilled water unit.

[0053] The display unit 200 refers to the unit that needs to perform its safety - important functions during the normal operation of a nuclear power plant, during predicted operational events (accidents), and / or after an accident. It mainly includes the display of data corresponding to automatic protection, process control, and automatic monitoring functions.

[0054] Among them, the main control station 100 includes a plurality of communication units 101 and a control unit 102, as Figure 2 shown;

[0055] It should be noted that the communication unit 101 can be a point - to - point communication unit. That is to say, the communication unit 101 has built - in network devices and can establish a direct connection relationship with other communication units 101 through the network devices.

[0056] It should be noted that the number of the communication units 101 is the same as that of the control units 102. The control unit 102 is used to connect to nuclear power equipment, process the signals corresponding to the nuclear power equipment to determine the safety of the nuclear power equipment, and is also used for self - diagnosis, etc.

[0057] The control unit 102 is also connected to other control units 102 in the main control station 100;

[0058] For each communication unit 101, the communication unit 101 is connected to one of the control units 102;

[0059] The display unit 200 is connected to the communication unit 101 through a communication link;

[0060] The control unit 102 detects its own components to obtain detection data, processes the detection data, and sends the processed detection data to the communication unit 101.

[0061] The communication unit 101 sends the processed detection data to the display unit 200 through the communication link so that the display unit 200 can display the component status based on the processed detection data.

[0062] Specifically, the control unit 102 detects its own components in real - time and summarizes the detection data of each component. Then, for the detection data of each component, it judges whether the detection data indicates a fault for self - diagnosis. If it indicates a fault, a certain bit in the corresponding detection data is set to 1, and the detection data indicating the fault is sent to the communication unit 101.

[0063] The communication unit 101 sends the processed detection data to the display unit 200 through the communication link, and the display unit 200 can display the fault alarm in various ways.

[0064] It should be noted that the fault alarm method can be direct display, indicator light display, dot matrix display, etc.

[0065] The component includes its own board CPU, random access memory RAM, read-only memory ROM, clock, watchdog, program sequence, communication link, communication data, etc.

[0066] The detection data is 32-bit data;

[0067] It should be noted that the specific process of determining whether the detection data indicates a fault for the detection data of each component includes:

[0068] For the detection data of each component, find the pre-stored threshold range, and determine whether the detection data is within the corresponding threshold range. If not, it means that the detection data indicates a fault.

[0069] Optionally, the control unit 102 also needs to perform self-monitoring of the power state, cabinet temperature, fan state, and cabinet door.

[0070] Optionally, the communication unit 101 is used to detect its own components in real time and send the detection data of each component to the control unit 102 for summarization.

[0071] The control unit 102 summarizes the detection data of each component; then, for the detection data of each component, determine whether the detection data indicates a fault for self-diagnosis; if it indicates a fault, send the detection data indicating the fault to the communication unit 101.

[0072] It should be noted that the self-diagnosis method of the control unit for itself is the same as its processing method for the communication unit 101, and reference can be made to each other.

[0073] Furthermore, the display unit 200 has a built-in communication module functional unit. Specifically, the display unit 200 is connected to the communication unit 101 through its built-in communication module to avoid intermediate links and solve problems such as data reception and redundant data judgment;

[0074] In the embodiment of the present invention, direct communication with the display unit is achieved through the communication unit, simplifying the data transmission process. The control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit. The communication unit sends the processed detection data to the display unit through the communication link so that the display unit can display the component status based on the processed detection data, thereby improving the efficiency and reliability of data transmission; avoiding cost waste caused by the addition of multiple additional optical bypass module devices, and improving the utilization rate of the internal space of the unit.

[0075] Optionally, the specific structure of the control unit 102 may be as follows Figure 3 shown, specifically including an IO communication unit 1021 and a main processing unit 22.

[0076] The IO communication unit 21 and the main processing unit 22 are connected through a backplane bus;

[0077] Based on this, the communication unit 101 is connected to the main processing unit 22 through the backplane bus.

[0078] The IO communication unit 21 is connected to the nuclear power equipment, and is used to collect the signals corresponding to the nuclear power equipment, that is, IO acquisition information, and send it to the communication unit 101.

[0079] Specifically, the IO communication unit 21 and the main processing unit 22 respectively detect their own components to obtain detection data; then the main processing unit 22 aggregates the detection data of the IO communication unit 21 and itself; then, for the detection data of each component, it is judged whether the detection data indicates a fault to perform self-diagnosis; if it indicates a fault, the detection data indicating the fault is sent to the communication unit 101.

[0080] The communication unit 101 receives the variable information transmitted by the main processing unit 22 through the backplane bus, including self-diagnosis information (that is, detection information) and IO acquisition information, and sends the data to the display unit 200.

[0081] Optionally, the main processing unit 22 is in a hot standby redundant state, that is to say, there are multiple main processing units 22 in the main control station. One main processing unit 22 is used as the main component, and the other main processing units 22 are used as standby components. The other main processing units 22 are in a ready state. Once the main component fails, the standby component can immediately take over and continue to run.

[0082] Optionally, the IO communication unit 21 is also used to collect the information of the nuclear power equipment, that is, IO acquisition information.

[0083] The display unit 200 has a built-in communication processing function. It receives the detection data and IO acquisition information sent by the main control station 100 through a point-to-point communication protocol, and performs relevant reception processing on the detection information and IO acquisition information, including various inspection technologies such as decryption, frame sequence number, timeout check, and CRC check.

[0084] Specifically, for the received IO acquisition information, the display unit 200 first judges whether the IO acquisition information is encrypted. If it is encrypted, it decrypts the IO acquisition information using the key stored in itself.

[0085] Next, determine whether the frame number of the detected data and / or the IO acquisition information is the current number + 1. If so, determine whether the detected data and / or the IO acquisition information has consecutive numbers, so as to determine whether there is tampering.

[0086] The current number refers to the frame number of the previous detected data and / or the IO acquisition information after the verification is passed, and the frame number of the previous detected data and / or the IO acquisition information is used as the current number.

[0087] Then, obtain the reception time of receiving the detected data and / or the IO acquisition information to perform a timeout check on the detected data and / or the IO acquisition information, as well as a cyclic redundancy check code (CRC) check.

[0088] Optionally, the display unit 200 is further configured to judge the redundant data to judge whether the redundant data is master data. If it is non-master data, alarm processing needs to be performed;

[0089] In the embodiment of the present invention, after all checks are passed, the received IO acquisition information is rearranged according to the received data point table issued by the configuration, and the data is copied to the received network data area;

[0090] In the embodiment of the present invention, direct communication with the display unit is realized through the communication unit, which simplifies the data transmission process. The IO communication unit and the main processing unit respectively detect their own components to obtain detected data; then the main processing unit summarizes the detected data of the IO communication unit and itself; then, for the detected data of each component, judge whether the detected data indicates a fault for self-diagnosis; if it indicates a fault, the detected data indicating the fault is sent to the communication unit, which improves the efficiency and reliability of data transmission; it avoids the cost waste caused by the addition of multiple additional optical bypass module devices, and can improve the utilization rate of the internal space of the unit.

[0091] Based on the communication settings shown in the above embodiments of the present invention, the present invention also shows the specific structure of the communication unit 101, as Figure 4 shown.

[0092] The communication unit 101 includes a data link layer 11 and a processing layer 12;

[0093] The data link layer 11 is communicatively connected to the processing layer 12 and is respectively connected to the display unit 200, the IO communication unit 21, and the main processing unit 21 through the data link layer 11.

[0094] When the processing layer 12 receives a connection request input by the user based on the main control station, it searches for a device corresponding to the connection request;

[0095] In a specific implementation, when the processing layer 12 receives a connection request input by the user based on the main control station 100, it queries the device information of the corresponding device in the connection request. It traverses the device names in its own storage unit that are the same as the device model and type in the device information to determine whether the device in the connection request is the display unit 200 or another main control station 100.

[0096] It should be noted that the device information includes device model, device type, device IP address, etc.

[0097] If the device is the display unit 200, a connection between the communication link of the data link layer 11 and the display unit 200 is established based on the device information in the connection request.

[0098] Specifically, if the device is the display unit 200, a connection between the data link layer and the display unit is constructed based on the device IP address in the device information of the connection request and its own IP address, that is, the display unit 200 is connected through the communication link of the data link layer 11.

[0099] In the embodiment of the present invention, the communication unit of the main control station supports communication with the display unit; a request frame is sent to the display unit based on the connection request for verification by the display unit. If there is corresponding device information, a connection between the data link layer and the display unit is constructed based on the device IP address in the device information of the connection request and its own IP address to achieve direct communication between the communication unit and the display unit.

[0100] Optionally, based on the communication device shown in the above embodiment of the present invention Figure 4 Another schematic diagram is shown below, as Figure 5 shown.

[0101] The connection of the communication unit 101 with other main control stations 100;

[0102] The data link layer 11 in the communication unit 101 is connected to the data link layer 11 in the communication unit 101 under other main control stations 100.

[0103] If the device is another main control station 100, a request frame is sent to the communication unit 101 under the other main control station 100 through a wireless network based on the connection request, so that the communication unit under the other main control station verifies based on the request frame;

[0104] Among them, the request frame contains legality information and type.

[0105] In the communication unit 101 of the other master control station 100, the processing layer 12 receives a request frame sent by the wireless network, and verifies the legitimacy and type of the request frame; if both verifications pass, it returns a corresponding return frame, indicating that the communication unit 101 of the master control station and the communication unit of the other master control station 100 are devices of the same type. At the same time, based on the device IP address in the request frame and its own IP address, it constructs a connection between the data link layer and the data link layer in the other master control station 100;

[0106] It should be noted that the legality verification here refers to judging according to the pre-stored legality information in the processing layer 12. If there is legality information consistent with the request frame, it is determined that the request frame is legal; otherwise, it is determined that it is illegal.

[0107] When the processing layer 12 receives the return frame, it constructs a connection between the data link layer and the data link layer in the other master control station 100 based on the device IP address of the device information in the connection request and its own IP address, so that the communication unit 101 is connected to the communication unit 101 of the other master control station 100;

[0108] In the embodiment of the present invention, the communication unit of the master control station supports communicating with the communication units of the same type under other master control stations, sends a request frame to other master control stations based on the connection request, so that the communication units under other master control stations verify based on the request frame; when receiving the return frame feedback after passing the verification by other master control stations, it constructs a connection between the data link layer and the data link layer in the other master control station based on the device IP address of the device information in the connection request and its own IP address, so that the communication unit is connected to the communication unit of the other master control station. The present invention provides a way of inter-station communication between a security display and a master control station through a point-to-point communication board to solve the problem of occupying more space in the prior art.

[0109] Based on the communication device shown in the embodiment of the present invention above, the embodiment of the present invention also correspondingly shows a communication method, as Figure 6 shown, the method:

[0110] Step S601: The control unit detects its own components to obtain detection data;

[0111] Step S602: The control unit processes the detection data and sends the processed detection data to the communication unit;

[0112] Step S603: The communication unit sends the processed detection data to the display unit through the communication link, so that the display unit displays the component status based on the processed detection data.

[0113] Optionally, the control unit processes the detection data and sends the processed detection data to the communication unit, including:

[0114] The control unit summarizes the detection data of each component; for the detection data of each component, determines whether the detection data indicates a fault; if it indicates a fault, sends the detection data indicating the fault to the communication unit.

[0115] Optionally, the main processing unit is in a hot standby redundant state.

[0116] Optionally, when the processing layer receives a connection request input by the user based on the main control station, it searches for a device corresponding to the connection request;

[0117] If the device is a display unit, a communication link of the data link layer is established based on the device information in the connection request to connect to the display unit.

[0118] Optionally, the data link layer in the communication unit is connected to the data link layer in the communication unit under other main control stations, including:

[0119] If the device is another main control station, a request frame is sent to the communication unit under the other main control station through a wireless network based on the connection request, so that the communication unit under the other main control station verifies based on the request frame;

[0120] If a return frame feedback from the communication unit under the other main control station is received, a connection between the data link layer and the data link layer in the other main control station is constructed based on the device IP address of the device information in the connection request and its own IP address, so that the communication unit is connected to the communication unit of the other main control station.

[0121] For the steps of the communication method disclosed in the above embodiments of the present invention, reference may be made to the corresponding parts in the communication device disclosed in the above embodiments of the present invention, and details will not be described here.

[0122] In the embodiments of the present invention, direct communication with the display unit is achieved through the communication unit, simplifying the data transmission process. The control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit. The communication unit sends the processed detection data to the display unit through the communication link, so that the display unit displays the component status based on the processed detection data, improving the efficiency and reliability of data transmission; avoiding cost waste caused by the addition of multiple additional optical bypass module devices, and improving the utilization rate of the internal space of the unit.

[0123] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for a system or system embodiment, since it is basically similar to a method embodiment, the description is relatively simple. For the relevant parts, reference can be made to the corresponding description in the method embodiment. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative efforts.

[0124] Those skilled in the art can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0125] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A communication device, characterized in that: The communication device includes a display unit and a main control station; The main control station includes a plurality of communication units and a control unit; For each communication unit, the communication unit is connected to one of the control units; The display unit is connected to the communication unit via a communication link; The control unit detects its own components to obtain detection data; processes the detection data and sends the processed detection data to the communication unit; The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit displays the component status based on the processed detection data.

2. The device according to claim 1, characterized in that The control unit processes the detection data and sends the processed detection data to the communication unit, including: The control unit summarizes the detection data of each component; For each component's detection data, determining whether the detection data indicates a fault; If a fault is indicated, detection data indicating the fault is sent to the communication unit.

3. The device according to claim 1, characterized in that The control unit includes an IO communication unit and a main processing unit; The IO communication unit and the main processing unit are connected via a backplane bus; The communication unit is connected to the main processing unit via a backplane bus.

4. The device according to claim 3, characterized in that The main processing unit is in hot standby redundant state.

5. The device according to claim 1, characterized in that The display unit has a built-in communication module.

6. The device according to claim 1, characterized in that The communication unit is a point-to-point communication unit.

7. The device according to claim 1, characterized in that The communication unit includes a data link layer and a processing layer; When the processing layer receives a connection request input by the user based on the main control station, it searches for a device corresponding to the connection request; If the device is a display unit, a connection between the communication link of the data link layer and the display unit is established based on the device information in the connection request.

8. The device according to claim 7, characterized in that The connection of the communication unit to other main control stations; The data link layer in the communication unit is connected to the data link layer in the communication unit under other master control stations.

9. The device according to claim 8, characterized in that The data link layer in the communication unit is connected to the data link layer in the communication unit under other master control stations, including: If the device is another master control station, sending a request frame to the communication unit under the other master control station through a wireless network based on the connection request, so that the communication unit under the other master control station performs verification based on the request frame; If a return frame is received from a communication unit under another master control station, a connection is established between the data link layer and the data link layer in the other master control station based on the device IP address of the device information in the connection request and its own IP address, so that the communication unit is connected to the communication unit of the other master control station.

10. A communication method, characterized in that: Applied to the communication device according to any one of claims 1 to 9, the communication device comprising a display unit and a main control station, the method comprising: The control unit of the main control station detects its own components to obtain detection data; The control unit of the main control station processes the detection data and sends the processed detection data to the communication unit of the main control station; The communication unit sends the processed detection data to the display unit through a communication link, so that the display unit displays the component status based on the processed detection data.

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