Wireless signal coverage system for nuclear power plant
By introducing WiFi and 5G communication combining technology into the wireless communication system of nuclear power plants, the problems of wireless communication latency and lag in nuclear power plants have been solved, and a high-bandwidth, stable communication network has been achieved to meet the intelligent business needs of nuclear power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CGN INTELLECTUAL TECH SHENZHEN CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-28
AI Technical Summary
During peak periods or when transmitting high-definition video, the wireless communication system in nuclear power plants faces a high risk of communication delays and stuttering, making it difficult to meet user needs.
A wireless signal coverage system for nuclear power plants is constructed using wireless base stations, a first power divider module, and multiple sets of composite wireless communication modules, including WiFi communication units and 5G communication units. Signals are combined through a combiner unit, and signal distribution and splitting are performed using a power divider and coupler to ensure that the antenna channels of different frequency bands are different.
It has achieved a fast and stable wireless communication network, significantly improving the wireless communication bandwidth of nuclear power plants and meeting the needs of intelligent services.
Smart Images
Figure CN224571380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear power plant equipment technology, and in particular to a wireless signal coverage system for nuclear power plants. Background Technology
[0002] The wireless communication system is an important component of the nuclear power plant's emergency communication system. It consists of several wireless communication base stations, forming a wireless signal coverage system capable of covering the entire nuclear power plant. This system is used by the nuclear island control room to call relevant personnel, disseminate information, and, in emergencies, to perform group calls and other operations on emergency personnel.
[0003] In a certain nuclear power plant, a single base station needs to provide wireless signals to 20-30 rooms simultaneously. However, the uplink and downlink bandwidth of the base station is limited, making it difficult to meet the wireless communication needs during peak user periods or when a large amount of 4K / 8K high-definition video transmission is used. This results in a high risk of communication delays and stuttering, which is detrimental to the safety of the nuclear power plant. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a wireless signal coverage system for nuclear power plants.
[0005] The technical solution adopted by this utility model to solve its technical problem is: constructing a wireless signal coverage system for nuclear power plants, including: Wireless base station; The first power distribution module, connected to the wireless base station, is used to distribute the power of the output signal of the wireless base station; and Multiple sets of composite wireless communication modules are provided, each set of composite wireless communication modules including a WiFi communication unit, a 5G communication unit and a combining unit; the communication range of the WiFi communication unit and the 5G communication unit overlaps with each other, the combining unit is connected to the first power divider module, the WiFi communication unit and the 5G communication unit, and the combining unit is used to combine the communication signals of the WiFi communication unit and the 5G communication unit and feed them into the first power divider module.
[0006] Preferably, the first power divider module includes a first Class A power divider, a plurality of second Class A power dividers, a plurality of third Class A power dividers, ..., a plurality of nth Class A power dividers, where n is a positive integer; The input terminal of the first Class A power divider is connected to the wireless base station, and the output terminal of the first Class A power divider is connected to the input terminal of the second Class A power divider or to the combining unit. The output of the second Class A power divider is connected to the third Class A power divider or to the combining unit; … The output of the (n-1)th Class A power divider is connected to the nth Class A power divider or to the combining unit; Each output terminal of the nth Class A power divider is connected one-to-one to the combining unit.
[0007] Preferably, the first power distribution module further includes a Class A coupler and a secondary branching unit; The input terminal of the Class A coupler is connected to the wireless base station, the main output terminal of the Class A coupler is connected to the input terminal of the first Class A power divider, and the secondary output terminal of the Class A coupler is connected to the secondary splitting unit. The Class A coupler is used to split the output terminal of the wireless base station. The secondary splitting unit is connected to the combining unit, and the secondary splitting unit is used to split the output of the Class A coupler into at least two paths.
[0008] Preferably, the secondary branching unit includes several Class B couplers and / or several Class B power dividers.
[0009] Preferably, the combining unit includes a first combiner, a second combiner, and a wireless access point; The input terminal of the first combiner is connected to the first power divider module, and the output terminal of the first combiner is connected to the WiFi communication unit. The input terminal of the second combiner is connected to the first power divider module, and the output terminal of the second combiner is connected to the 5G communication unit; The wireless access point is connected to the first combiner and the second combiner to combine the communication signals of the WiFi communication unit and the 5G communication unit and feed them into the first power divider module.
[0010] Preferably, the WiFi communication unit includes a first antenna splitter unit and multiple antennas, the input terminal of the first antenna splitter unit is connected to the output terminal of the first combiner, and the multiple output terminals of the first antenna splitter unit are connected one-to-one to each of the antennas; The 5G communication unit includes a second antenna splitter unit and multiple antennas. The input terminal of the second antenna splitter unit is connected to the output terminal of the second combiner, and the multiple output terminals of the second antenna splitter unit are connected one-to-one to each of the antennas.
[0011] Preferably, the first antenna splitter unit and the second antenna splitter unit respectively include a first Class C power divider, a plurality of second Class C power dividers, ... a plurality of m-th Class C power dividers, where m is a positive integer; The input terminal of the first Class C power divider is connected to the output terminal of the first or second combiner, and the output terminal of the first Class C power divider is connected to the input terminal of the second Class C power divider or to the antenna. The output of the second Class C power divider is connected to the input of the third Class C power divider or to the antenna; … The output terminal of the (m-1)th Class C power divider is connected to the input terminal of the mth Class C power divider or to the antenna; The output of the m-th Class C power divider is connected to the antenna.
[0012] Preferably, the first antenna splitter unit and the second antenna splitter unit further include a first class C coupler, a second class C coupler, ... a kth class C coupler, where k is a positive integer; The first Class C coupler is connected to the output of the first or second combiner, the secondary output of the first Class C coupler is connected to the antenna, and the main output of the first Class C coupler is connected to the input of the first Class C power divider or to the input of the second Class C coupler. The secondary output of the second Class C coupler is connected to the antenna, and the main output of the second Class C coupler is connected to the input of the first Class C power divider or to the input of the third Class C coupler. … The secondary output terminal of the (k-1)th Class C coupler is connected to the antenna, and the main output terminal of the (k-1)th Class C coupler is connected to the input terminal of the first Class C power divider or to the input terminal of the kth Class C coupler. The secondary output of the kth class C coupler is connected to the antenna, and the main output of the kth class C coupler is connected to the input of the first class C power divider.
[0013] Preferably, in the same composite wireless communication module, all antennas in the same frequency band have the same channel; in different composite wireless communication modules, the channels of antennas in the same frequency band are different.
[0014] Preferably, when the number of composite wireless communication modules is three, the wireless operating frequencies of the three wireless access points in each composite wireless communication module are respectively set as follows: 2.4GHz band 1 channel and 5GHz band a channel, 2.4GHz band 6 channel and 5GHz band b channel, 2.4GHz band 11 channel and 5GHz band c channel; When the number of composite wireless communication modules is greater than 3, the wireless operating frequencies starting from the 4th wireless access point are respectively set as: 5GHz band d channel, 5GHz band e channel...; wherein, the number of composite wireless communication modules is not greater than the number of channels in the 5GHz band.
[0015] The present invention has the following beneficial effects: it provides a wireless signal coverage system that combines WiFi and 5G communication to form a fast and stable wireless communication network. By organically integrating WiFi and 5G communication, the wireless communication bandwidth of nuclear power plants can be significantly improved, which can better meet the needs of intelligent nuclear power plant operations for wireless systems. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a nuclear power plant wireless signal coverage system in some embodiments of this utility model; Figure 2 This is a connection diagram of the first Class A power divider in some embodiments of this utility model; Figure 3 This is a connection diagram of the second Class A power divider in some embodiments of this utility model; Figure 4 This is a connection diagram of the nth type A power divider in some embodiments of this utility model; Figure 5 This is a partial structural schematic diagram of the first power distribution module in some embodiments of this utility model; Figure 6 This is a schematic diagram of the combining unit in some embodiments of the present invention; Figure 7 This is a schematic diagram of the structure of the WiFi communication unit in some embodiments of this utility model; Figure 8 This is a schematic diagram of the structure of the 5G communication unit in some embodiments of this utility model; Figure 9 This is a connection diagram of the first Class C power divider in some embodiments of this utility model; Figure 10 This is a connection diagram of the second Class C power divider in some embodiments of this utility model; Figure 11 This is a connection diagram of the mth type C power divider in some embodiments of this utility model; Figure 12 This is a partial structural schematic diagram of the first and second antenna splitter units in some embodiments of this utility model; Figure 13 These are example diagrams of a nuclear power plant wireless signal coverage system in some embodiments of this utility model; Figure 14 This is an example diagram of a nuclear power plant wireless signal coverage system in some other embodiments of this utility model. Detailed Implementation
[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0018] In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "up," "down," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] Figure 1 This is a schematic diagram of the structure of a nuclear power plant wireless signal coverage system in some embodiments of the present invention. The nuclear power plant wireless signal coverage system forms a fast and stable wireless communication network by utilizing a combination of WiFi communication and 5G communication. By organically integrating WiFi communication and 5G communication, the wireless communication bandwidth of the nuclear power plant can be significantly improved, which can better meet the needs of the intelligent business of the nuclear power plant for the wireless system.
[0020] like Figure 1 As shown, the nuclear power plant's wireless signal coverage system may include a wireless base station 1, a first power distribution module 2, and multiple composite wireless communication modules 3.
[0021] Wireless base station 1 can be an existing 5G system macro base station. The total downlink bandwidth of a single macro base station is about 1000Mbps and the uplink bandwidth is about 200Mbps, which has the advantages of fast and stable communication speed.
[0022] The first power divider module 2 is connected to the wireless base station 1. The first power divider module 2 is used to distribute the power of the output signal of the wireless base station 1 so as to send the separated signals to each composite wireless communication module 3.
[0023] In some embodiments, please refer to Figures 2 to 4 As shown, the first power divider module 2 may include a first Class A power divider, multiple second Class A power dividers, ..., multiple nth Class A power dividers, where n is a positive integer.
[0024] Please see Figure 2 The input terminal of the first Class A power divider is connected to the wireless base station 1, and the output terminal of the first Class A power divider is connected to the input terminal of the second Class A power divider or to the combining unit 33. Each output terminal of the first Class A power divider can be connected to the input terminal of the second Class A power divider or to the combining unit 33, mainly including three embodiments. For example... Figure 2 As shown in A1, each output terminal of the first Class A power divider can be connected one-to-one to the input terminals of all second Class A power dividers. For example... Figure 2 As shown in A2, some of the output terminals of the first Class A power divider can be connected to a portion of the combining unit 33, while the other portion of the output terminals can be connected to the input terminals of all the second Class A power dividers. Figure 2 As shown in A3, each output terminal of the first Class A power divider can be connected one-to-one to all combining units 33. The specific configuration can be determined according to the actual situation.
[0025] Please see Figure 3 The output of the second Class A power divider is connected to the third Class A power divider or to the combining unit 33. The output of the third Class A power divider is connected to the fourth Class A power divider or to the combining unit 33. Each output of the second Class A power divider can be an input of the third Class A power divider or connected to the combining unit 33, mainly including three embodiments. Figure 3 As shown in B1, each output of the second Class A power divider can be connected one-to-one to the input of all third Class A power dividers. For example... Figure 3 As shown in B2, some output terminals of the second Class A power divider can be connected to part of the combining unit 33, while other output terminals can be connected to the input terminals of all the third Class A power dividers. Figure 3 As shown in B3, each output terminal of the second Class A power divider can be connected one-to-one to all combining units 33. The specific configuration can be determined according to the actual situation.
[0026] It is easy to understand that the connection method for the third to the (n-1)th Class A power dividers is similar to that of the second Class A power divider. Taking the (n-1)th Class A power divider as an example, it can be deduced that the output terminal of the (n-1)th Class A power divider is connected to the nth Class A power divider or to the combining unit 33. The connection structure of the third to the (n-2)th Class A power dividers can also be derived from the above rules, and will not be elaborated here.
[0027] Please see Figure 4 Each output terminal of the nth Class A power divider is connected one-to-one to the combining unit 33.
[0028] To facilitate on-site wiring and signal acquisition, in some embodiments, the first power distribution module 2 may further include... Figure 5 The Class A coupler 21 and the secondary branch unit 22 are shown.
[0029] The input of Class A coupler 21 is connected to wireless base station 1. The main output of Class A coupler 21 is connected to the input of the first Class A power divider. The secondary output of Class A coupler 21 is connected to secondary path splitting unit 22. Class A coupler 21 is used to split the output of wireless base station 1. The secondary path provides a signal communication path to secondary path splitting unit 22, and the main path provides a signal communication path to the first Class A power divider. The signal power of the secondary path is less than that of the main path. Secondary path splitting unit 22 is connected to combining unit 33. Secondary path splitting unit 22 is used to split the output of Class A coupler 21 into at least two paths to provide multiple signal communication paths to combining unit 33.
[0030] In some embodiments, the first power splitting module 2 may further include a plurality of Class D couplers, the input terminals of which are connected to the output terminals of one of the Class A power splitters from the first to the nth Class A power splitter, and the input terminals of each Class D coupler are connected to the combining unit 33. In this embodiment, the function of the Class D coupler is to extend the output ports of the Class A power splitter so that it can be integrated into the combining unit 33.
[0031] Furthermore, the secondary branching unit 22 may include several Class B couplers and / or several Class B power dividers. It is readily understood that the input terminal of each Class B coupler or Class B power divider can be connected to the output terminal of the remaining Class B couplers or Class B power dividers, while the output terminal of the Class B coupler or Class B power divider can be connected to the combining unit 33 or to the input terminal of the remaining Class B couplers or Class B power dividers. The specific connection method can be designed according to the actual situation, as long as the output terminal of the Class A coupler 21 can be split into at least two paths; no limitation is made here.
[0032] like Figure 1 As shown, each composite wireless communication module may include a WiFi communication unit 31, a 5G communication unit 32, and a combining unit 33. The communication ranges of the WiFi communication unit 31 and the 5G communication unit 32 overlap. The combining unit 33 is connected to the first power distribution module 2, the WiFi communication unit 31, and the 5G communication unit 32. The combining unit 33 is used to combine the communication signals of the WiFi communication unit 31 and the 5G communication unit 32 and feed them into the first power distribution module 2. It should be noted that the communication frequency band of the WiFi communication unit 31 is 2.4GHz and 5GHz, etc., and the communication frequency band of the 5G communication unit 32 is 1.8GHz or 2GHz, etc. Since the communication frequencies of the two communication units are different, the wireless base station 1 operates on a certain communication frequency band. The function of the combining unit 33 is to make the signals (including input and output signals) transmitted by the WiFi communication unit 31 and the 5G communication unit 32 at the same frequency so that they can communicate with the wireless base station 1, so as to facilitate the aggregation and processing of signals with different communication frequencies.
[0033] In some embodiments, such as Figure 6 As shown, the combining unit 33 may include a first combiner 331, a second combiner 332, and a wireless access point 333. The input of the first combiner 331 is connected to the first power divider module 2, and its output is connected to the WiFi communication unit 31. The input of the second combiner 332 is connected to the first power divider module 2, and its output is connected to the 5G communication unit 32. The wireless access point 333 is connected to both the first combiner 331 and the second combiner 332, so that the communication signals from the WiFi communication unit 31 and the 5G communication unit 32 are combined and fed into the first power divider module 2. Specifically, the inputs of the first and second combiners are connected one-to-one to the outputs of two of the Class A power dividers in the first power divider module 2. In addition, the wireless access point 333 can be an existing wireless AP, as long as it can assist the signals of the WiFi communication unit 31 and the 5G communication unit 32 to be fed into the antenna feeder system (i.e., the first power distribution module 2) at the same time, so that the wireless base station 1 can communicate with the WiFi communication unit 31 and the 5G communication unit 32.
[0034] In some embodiments, such as Figure 7 As shown, the WiFi communication unit 31 includes a first antenna splitter unit 311 and multiple antennas 312. The input terminal of the first antenna splitter unit 311 is connected to the output terminal of the first combiner 331, and the multiple output terminals of the first antenna splitter unit 311 are connected one-to-one to each antenna 312.
[0035] In some embodiments, such as Figure 8 As shown, the 5G communication unit 32 includes a second antenna splitter unit 321 and multiple antennas 312. The input terminal of the second antenna splitter unit 321 is connected to the output terminal of the second combiner 332, and the multiple output terminals of the second antenna splitter unit 321 are connected one-to-one to each antenna 312.
[0036] In some embodiments, such as Figures 9 to 11 As shown, the first antenna splitter unit 311 and the second antenna splitter unit 321 respectively include a first Class C power divider, a number of second Class C power dividers, ... a number of m-th Class C power dividers, where m is a positive integer.
[0037] Please see Figure 9 The input terminal of the first Class C power divider is connected to the output terminal of the first or second combiner, and the output terminal of the first Class C power divider is connected to the input terminal of the second Class C power divider or to antenna 312. Each output terminal of the first Class C power divider can be connected to the input terminal of the second Class C power divider or to an antenna (antenna 312), mainly including three embodiments. Figure 9 As shown in C1, each output terminal of the first Class C power divider can be connected one-to-one to the input terminals of all second Class C power dividers. For example... Figure 9As shown in C2, some output terminals of the first Class C power divider can be connected to some antennas, while other output terminals can be connected to the input terminals of all the second Class C power dividers. Figure 9 As shown in C3, each output terminal of the first Class C power divider can be connected to each antenna one-to-one.
[0038] Please see Figure 10 The output of the second Class C power divider is connected to the input of the third Class C power divider or to antenna 312. Each output of the second Class C power divider can be connected to the input of the third Class C power divider or to an antenna, mainly including three embodiments. Figure 10 As shown in D1, each output of the second Class C power divider can be connected one-to-one to the input of all third Class C power dividers. For example... Figure 10 As shown in D2, some output terminals of the second Class C power divider can be connected to some antennas, while other output terminals can be connected to the input terminals of all third Class C power dividers. Figure 10 As shown in D3, each output terminal of the second Class C power divider can be connected to each antenna one-to-one.
[0039] The connection structure of the third to the (m-1)th Class C power dividers is similar to that of the second Class C power divider. Taking the (m-1)th Class C power divider as an example, it can be deduced that the output terminal of the (m-1)th Class C power divider is connected to the input terminal of the mth Class C power divider or to the antenna 312.
[0040] Please see Figure 11 The output of the m-th Class C power divider is connected to antenna 312.
[0041] To improve the convenience of accessing the antenna, in some embodiments, such as Figure 12 As shown, the first antenna splitter unit 311 and the second antenna splitter unit 321 may also include a first class C coupler, a second class C coupler, ... a kth class C coupler, where k is a positive integer.
[0042] The first Class C coupler is connected to the output of the first or second combiner. The secondary output of the first Class C coupler is connected to the antenna 312. The main output of the first Class C coupler is connected to the input of the first Class C power divider or the input of the second Class C coupler. The secondary output of the second Class C coupler is connected to the antenna 312. The main output of the second Class C coupler is connected to the input of the first Class C power divider or the input of the third Class C coupler. ... The secondary output of the (k-1)th Class C coupler is connected to the antenna 312. The main output of the (k-1)th Class C coupler is connected to the input of the first Class C power divider or the input of the kth Class C coupler. The secondary output of the kth Class C coupler is connected to the antenna 312. The main output of the kth Class C coupler is connected to the input of the first Class C power divider.
[0043] In some embodiments, the number of antennas 312 can be between 2 and 5. It should be noted that the number of antennas needs to be set reasonably. If the number is too large, the power of each antenna will be low, and the coverage and transmission rate will be affected. Therefore, the number of antennas should be set between 2 and 5 to ensure communication quality.
[0044] Since a single room typically houses one composite wireless communication module 3, to avoid interference between wireless signals from different rooms and to improve communication quality within the same room, in some embodiments, all antennas 312 in the 2.4 GHz band and all antennas 312 in the 5 GHz band share the same channel within the same composite wireless communication module 3. In different composite wireless communication modules 3, the channels of antennas 312 in the same frequency band are different.
[0045] In one specific embodiment, such as Figure 13 or Figure 14 As shown, when there are three composite wireless communication modules 3, the wireless operating frequencies of the three wireless access points in each composite wireless communication module 3 can be set as follows: 2.4GHz band 1 channel and 5GHz band a channel, 2.4GHz band 6 channel and 5GHz band b channel, and 2.4GHz band 11 channel and 5GHz band c channel. Here, 5GHz band a, b, and c channels represent any different channels within the 5GHz band.
[0046] Furthermore, when the number of antennas 312 is large, it is necessary to use more than 3 wireless access points (i.e., more composite wireless communication modules 3 are required). That is, when the number of composite wireless communication modules is greater than 3, the wireless operating frequencies starting from the 4th wireless access point are respectively set as: 5GHz band d channel, 5GHz band e channel, etc.; wherein, the number of composite wireless communication modules is not greater than the number of channels in the 5GHz band. In order to avoid interference, the fourth and more wireless APs may not use the 2.4GHz band.
[0047] In some embodiments, antenna 312 can be an existing directional antenna or an omnidirectional antenna. Furthermore, antenna 312 is preferably an existing broadband antenna capable of simultaneously transmitting WiFi wireless signals and 5G system wireless signals, thus facilitating the antenna's reception and transmission of signals at two different frequencies.
[0048] It should be noted that in this utility model, Class A, Class B, and Class C power dividers can all be existing power dividers. A power divider includes one input terminal and at least two output terminals, and is used to distribute the communication signal from its input terminal to each output terminal based on power equalization. Class A, Class B, Class C, and Class D couplers can be existing couplers. A coupler includes one input terminal, one secondary output terminal, and one primary output terminal, and is used to distribute the communication signal from its input terminal to the secondary output terminal and the primary output terminal based on a certain ratio, wherein the power of the signal output from the secondary output terminal is less than the power of the signal output from the primary output terminal. Furthermore, in this utility model, the "connection" between units and modules refers to a "communication connection."
[0049] It is understood that the technical features of the above embodiments can be freely combined, and the combination method can be determined according to the on-site requirements of the nuclear power plant. Specific embodiments can be referred to. Figure 13 and Figure 14 Wherein, 23 represents the first Class A power divider, 24 represents the second Class A power divider, 25 represents the Class D coupler, 41 represents the first Class C coupler, 42 represents the second Class C coupler, 43 represents the third Class C coupler, 51 represents the first Class C power divider, and 52 represents the second Class C power divider.
[0050] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. A wireless signal coverage system for a nuclear power plant, characterized in that, include: Wireless base station; The first power distribution module is connected to the wireless base station and is used to distribute the power of the output signal of the wireless base station. as well as Multiple sets of composite wireless communication modules are provided, each set of composite wireless communication modules including a WiFi communication unit, a 5G communication unit and a combining unit; the communication range of the WiFi communication unit and the 5G communication unit overlaps with each other, the combining unit is connected to the first power divider module, the WiFi communication unit and the 5G communication unit, and the combining unit is used to combine the communication signals of the WiFi communication unit and the 5G communication unit and feed them into the first power divider module.
2. The nuclear power plant wireless signal coverage system according to claim 1, characterized in that, The first power divider module includes a first Class A power divider, multiple second Class A power dividers, multiple third Class A power dividers, ..., multiple nth Class A power dividers, where n is a positive integer; The input terminal of the first Class A power divider is connected to the wireless base station, and the output terminal of the first Class A power divider is connected to the input terminal of the second Class A power divider or to the combining unit. The output of the second Class A power divider is connected to the third Class A power divider or to the combining unit; … The output of the (n-1)th Class A power divider is connected to the nth Class A power divider or to the combining unit; Each output terminal of the nth Class A power divider is connected one-to-one to the combining unit.
3. The nuclear power plant wireless signal coverage system according to claim 2, characterized in that, The first power splitting module also includes a Class A coupler and a secondary splitting unit; The input terminal of the Class A coupler is connected to the wireless base station, the main output terminal of the Class A coupler is connected to the input terminal of the first Class A power divider, and the secondary output terminal of the Class A coupler is connected to the secondary splitting unit. The Class A coupler is used to split the output terminal of the wireless base station. The secondary splitting unit is connected to the combining unit, and the secondary splitting unit is used to split the output of the Class A coupler into at least two paths.
4. The nuclear power plant wireless signal coverage system according to claim 3, characterized in that, The secondary branch unit includes several Class B couplers and / or several Class B power dividers.
5. The nuclear power plant wireless signal coverage system according to any one of claims 1 to 4, characterized in that, The combining unit includes a first combiner, a second combiner, and a wireless access point; The input terminal of the first combiner is connected to the first power divider module, and the output terminal of the first combiner is connected to the WiFi communication unit. The input terminal of the second combiner is connected to the first power divider module, and the output terminal of the second combiner is connected to the 5G communication unit; The wireless access point is connected to the first combiner and the second combiner to combine the communication signals of the WiFi communication unit and the 5G communication unit and feed them into the first power divider module.
6. The nuclear power plant wireless signal coverage system according to claim 5, characterized in that, The WiFi communication unit includes a first antenna splitter unit and multiple antennas. The input terminal of the first antenna splitter unit is connected to the output terminal of the first combiner, and the multiple output terminals of the first antenna splitter unit are connected one-to-one to each of the antennas. The 5G communication unit includes a second antenna splitter unit and multiple antennas. The input terminal of the second antenna splitter unit is connected to the output terminal of the second combiner, and the multiple output terminals of the second antenna splitter unit are connected one-to-one to each of the antennas.
7. The nuclear power plant wireless signal coverage system according to claim 6, characterized in that, The first antenna splitter unit and the second antenna splitter unit respectively include a first Class C power divider, a plurality of second Class C power dividers, ... a plurality of m-th Class C power dividers, where m is a positive integer; The input terminal of the first Class C power divider is connected to the output terminal of the first or second combiner, and the output terminal of the first Class C power divider is connected to the input terminal of the second Class C power divider or to the antenna. The output of the second Class C power divider is connected to the input of the third Class C power divider or to the antenna; … The output terminal of the (m-1)th Class C power divider is connected to the input terminal of the mth Class C power divider or to the antenna; The output of the m-th Class C power divider is connected to the antenna.
8. The nuclear power plant wireless signal coverage system according to claim 7, characterized in that, The first antenna splitter unit and the second antenna splitter unit further include a first class C coupler, a second class C coupler, ... a kth class C coupler, where k is a positive integer; The first Class C coupler is connected to the output of the first or second combiner, the secondary output of the first Class C coupler is connected to the antenna, and the main output of the first Class C coupler is connected to the input of the first Class C power divider or to the input of the second Class C coupler. The secondary output of the second Class C coupler is connected to the antenna, and the main output of the second Class C coupler is connected to the input of the first Class C power divider or to the input of the third Class C coupler. … The secondary output terminal of the (k-1)th Class C coupler is connected to the antenna, and the main output terminal of the (k-1)th Class C coupler is connected to the input terminal of the first Class C power divider or to the input terminal of the kth Class C coupler. The secondary output of the kth class C coupler is connected to the antenna, and the main output of the kth class C coupler is connected to the input of the first class C power divider.
9. The nuclear power plant wireless signal coverage system according to claim 6, characterized in that, In the same composite wireless communication module, all antennas in the same frequency band have the same channel; in different composite wireless communication modules, the channels of antennas in the same frequency band are different.
10. The nuclear power plant wireless signal coverage system according to claim 8, characterized in that, When the number of the composite wireless communication modules is 3, the wireless operating frequencies of the three wireless access points in each composite wireless communication module are respectively set as follows: 2.4GHz band 1 channel and 5GHz band a channel, 2.4GHz band 6 channel and 5GHz band b channel, 2.4GHz band 11 channel and 5GHz band c channel; When the number of composite wireless communication modules is greater than 3, the wireless operating frequencies starting from the 4th wireless access point are respectively set as: 5GHz band d channel, 5GHz band e channel...; wherein, the number of composite wireless communication modules is not greater than the number of channels in the 5GHz band.