A high-power 5G radio frequency remote unit antenna system and an explosion-proof method thereof

Abstract

The application relates to the field of 5G communication technology, and discloses a high-power 5G radio frequency remote unit antenna system and an explosion-proof method thereof; the system comprises a baseband processing unit, a radio frequency remote unit, a power divider combination and at least one antenna load branch; the baseband processing unit and the radio frequency remote unit are connected through an optical fiber; the output end of the radio frequency remote unit is connected with the input end of the power divider combination through a coaxial cable; the power divider combination is used for dividing the output of the radio frequency remote unit into multiple small-power outputs; the output end of the power divider combination is connected with the at least one antenna load branch through a coaxial cable; the antenna load branch comprises at least one antenna branch and a power divider and coupler combination; the antenna branch comprises an antenna and a circuit safety block. The application solves the problem that the prior art cannot be used in an explosive gas environment, and has the characteristics of safety, reliability, stability and durability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 5G communication, in particular to a high-power 5G radio remote unit antenna system and an explosion-proof method thereof. BACKGROUND

[0002] 5G communication technology is the fifth generation of mobile communication technology, and its main features are high speed, low latency and large number of connections. It is a network infrastructure for realizing man-machine and interconnection of things, and has been widely used in various aspects of production and life.

[0003] For industrial production systems, in order to expand the coverage range of 5G wireless communication signals and reduce the construction cost of wireless communication systems, the construction of 5G communication systems usually uses a room division system. This system connects a large-power radio remote unit to an antenna network, which simultaneously drags a large number of antenna loads to cover signals to a wider space.

[0004] A 5G room division system is provided. The 5G room division system is composed of BBU (baseband processing unit), RRU (radio remote unit), coupler, power divider and antenna, etc. In the existing room division system, the BBU can simultaneously support and connect multiple RRUs, thereby enhancing the transmission power of the entire system while expanding the coverage range of wireless signals. This 5G room division system is usually used in non-explosive gas environments. Since explosive gas environments have requirements for the radio frequency transmission power of the antenna, the isolation protection of the live body and the protection under the fault condition of the live system, this system cannot be used in explosive gas environments.

[0005] Therefore, in view of the problem that the existing 5G radio remote unit antenna system cannot be used in explosive gas environments, how to invent a high-power 5G radio remote unit antenna system that can be used in explosive gas environments is a technical problem that needs to be solved in the technical field. SUMMARY

[0006] The present application provides a high-power 5G radio remote unit antenna system and an explosion-proof method thereof, which has the characteristics of safety, reliability, stability and durability.

[0007] To achieve the above-mentioned purposes of the present application, the technical solutions adopted are as follows:

[0008] A kind of high-power 5G radio frequency remote unit antenna system;Including baseband processing unit, radio frequency remote unit, power divider combination, at least 1 group antenna load branch;The baseband processing unit of described, radio frequency remote unit is connected by optical fiber, the output end of radio frequency remote unit is connected with the input end of power divider combination by coaxial cable;The power divider combination is used to divide the output of radio frequency remote unit into multiple small-power outputs;

[0009] Wherein, the power divider combination is composed of multiple power dividers;The output end of power divider combination is connected with at least 1 group antenna load branch by coaxial cable;The antenna load branch includes at least one antenna branch and a power divider and coupler combination;The antenna branch includes antenna, circuit safety block;The input end of antenna and the output end of circuit safety block are connected by coaxial cable;The power divider and coupler combination is used to divide each way of multiple small-power outputs of power divider combination output to each antenna branch in close to equal division;The circuit safety block is used to ensure that the transmitting power of antenna and the energy of intrinsically safe explosion-proof circuit meet the requirements of transmitting power and energy respectively in explosive hazardous environment;The power divider and coupler combination is composed of multiple power dividers and couplers;The output end of power divider combination and the input end of power divider and coupler combination are connected by coaxial cable;The output end of power divider and coupler combination and the input end of circuit safety block are connected by coaxial cable.

[0010] Baseband processing unit, radio frequency remote unit, power divider combination, power divider and coupler combination are arranged in non-dangerous place;Circuit safety block, antenna are arranged in dangerous place.

[0011] Preferably, the antenna branch further includes a first explosion-proof junction box;The connection of antenna and circuit safety block is connected in the first explosion-proof junction box.

[0012] Further, the circuit safety block includes a first capacitor, a first fuse, a second capacitor and a second explosion-proof junction box;The first capacitor, the first fuse and the second capacitor are arranged in the second explosion-proof junction box;The first capacitor, the first fuse and the second capacitor are connected in series;The antenna is connected with the first capacitor;The second capacitor is connected with the power divider and coupler combination.

[0013] Still further, the second fuse is connected between the power divider combination and the power divider and coupler combination.

[0014] Still further, in the power divider combination, at least one power divider is connected in series according to tree structure.

[0015] Still further, in the power divider and coupler combination, at least one coupler and at least one power divider are connected in series according to tree structure.

[0016] Further, the antenna is an intrinsically safe explosion-proof antenna.

[0017] Further, the first capacitor and the second capacitor are high-voltage porcelain capacitors with a voltage resistance of 2KV and a capacity of 200pF.

[0018] An explosion-proof method of a high-power 5G radio frequency remote unit antenna system, comprising the following steps:

[0019] S1. Connecting the output end of the baseband processing unit and the input end of the radio frequency remote unit through an optical fiber, and combining through a plurality of power divider groups;

[0020] S2. Constructing at least one antenna load branch; the antenna load branch comprises at least one antenna branch and a power divider and coupler combination; the antenna branch comprises an antenna and a circuit safety block; combining through a plurality of power dividers and a plurality of coupler groups;

[0021] S3. Placing the circuit safety block and the antenna in a hazardous location, and placing the baseband processing unit, the radio frequency remote unit, the power divider combination, and the power divider and coupler combination in a non-hazardous location;

[0022] S4. Connecting the input end of the power divider combination and the output end of the radio frequency remote unit through a coaxial cable; dividing the output of the radio frequency remote unit into multiple small-power outputs through the power divider combination;

[0023] S5. Connecting the output end of the power divider combination and at least one antenna load branch through a coaxial cable; specifically, connecting the input end of the power divider and coupler combination of the antenna load branch and the output end of the power divider combination through a coaxial cable; distributing each of the multiple small-power outputs of the power divider combination output to each antenna branch in a nearly equal manner through the power divider and coupler combination;

[0024] S6. Connecting the input end of the circuit safety block of the antenna branch and each output end of the power divider and coupler combination through a coaxial cable, and connecting the output end of the circuit safety block of the antenna branch and the antenna through a coaxial cable; ensuring that the transmission power and the energy of the antenna meet the requirements of the transmission power and the energy of the intrinsically safe explosion-proof circuit in an explosive hazardous environment through the circuit safety block, and completing the explosion-proof setting.

[0025] Preferably, in step S5, each of the multiple small power outputs of the power divider combination output is distributed to each antenna branch in a nearly equal manner through the combination of the power divider and the coupler, specifically: according to the number of antennas, the energy distribution corresponding to each antenna is calculated, and the power of the Nth group of antenna load branches is distributed to each antenna in a nearly equal manner through the combination of the power divider and the coupler, thereby expanding the coverage range of the wireless signal while limiting the energy of each antenna to an energy value that meets the emission power requirement of the explosive hazardous location.

[0026] The beneficial effects of the present application are as follows:

[0027] The present application provides a high-power 5G radio frequency remote unit antenna system, comprising a baseband processing unit, a radio frequency remote unit, and a power divider combination; the output end of the power divider combination is connected to at least one group of antenna load branches through a coaxial cable; the antenna load branch comprises at least one antenna branch and a power divider and coupler combination; the antenna branch comprises an antenna and a circuit safety block; the baseband processing unit, the radio frequency remote unit, the power divider combination, the power divider, and the coupler combination are arranged in a non-hazardous location; the circuit safety block and the antenna are arranged in a hazardous location; the 5G radio frequency remote unit antenna system arranged according to the technical features of the present application can meet the requirements of the intrinsic safety type explosion-proof structure, and the system can be used in explosive gas environment zone one and zone two, and has the ability to prevent explosion in an explosive gas environment. Thus, the present application solves the problem that the prior art cannot be used in an explosive gas environment, and has the characteristics of safety, reliability, stability, and durability. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a system schematic diagram of a high-power 5G radio frequency remote unit antenna system of the present application.

[0029] Figure 2 is a power divider schematic diagram used in a high-power 5G radio frequency remote unit antenna system of the present application.

[0030] Figure 3 is a coupler schematic diagram used in a high-power 5G radio frequency remote unit antenna system of the present application.

[0031] Figure 4 is a power divider combination schematic diagram of a high-power 5G radio frequency remote unit antenna system of the present application.

[0032] Figure 5 is a power divider and coupler combination schematic diagram of a high-power 5G radio frequency remote unit antenna system of the present application.

[0033] Figure 6 is a flowchart schematic diagram of an explosion-proof method of a high-power 5G radio frequency remote unit antenna system of the present application in embodiment 3.

[0034] In the diagram, A - antenna, B - first explosion-proof junction box, C - first capacitor, D - first fuse, E - second capacitor, K - circuit safety block, F - power divider and coupler combination, G - second fuse, H - power divider combination, I - radio frequency remote unit, J - baseband processing unit, and M - second explosion-proof junction box. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figure 1 As shown, a high-power 5G radio frequency remote unit antenna system includes a baseband processing unit J, a radio frequency remote unit I, and a power divider assembly H. The baseband processing unit J and the radio frequency remote unit I are connected by optical fiber, and the output end of the radio frequency remote unit I is connected to the input end of the power divider assembly H through a coaxial cable. The power divider assembly H is used to divide the output of the radio frequency remote unit I into multiple low-power outputs.

[0038] The power divider assembly H comprises multiple power dividers; the output of power divider assembly H is connected to at least one set of antenna load branches via a coaxial cable; the antenna load branch includes at least one antenna branch and one power divider and coupler assembly F; the antenna branch includes antenna A and circuit safety block K; the input of antenna A and the output of circuit safety block K are connected via a coaxial cable; the power divider and coupler assembly F is used to further distribute each of the multiple low-power outputs from power divider assembly H to each antenna branch in a nearly equal manner; the circuit safety block K is used to ensure that the transmission power and electrical energy of antenna A meet the transmission power requirements of explosive hazardous environments and the energy requirements of intrinsically safe explosion-proof circuits, respectively; the power divider and coupler assembly F comprises multiple power dividers and couplers; the output of power divider assembly H and the input of power divider and coupler assembly F are connected via a coaxial cable; the output of power divider and coupler assembly F and the input of circuit safety block are connected via a coaxial cable.

[0039] The baseband processing unit J, the radio frequency remote unit I, the power divider assembly H, and the power divider and coupler assembly F are located in non-hazardous locations; the circuit safety block K and the antenna A are located in hazardous locations.

[0040] Example 2

[0041] like Figure 1As shown, a high-power 5G radio frequency remote unit antenna system includes a baseband processing unit J, a radio frequency remote unit I, a power divider combination H, and at least one group of antenna load branches; the baseband processing unit J and the radio frequency remote unit I are connected through an optical fiber, and the output end of the radio frequency remote unit I is connected to the input end of the power divider combination H through a coaxial cable; the power divider combination H is used to divide the output of the radio frequency remote unit I into multiple small-power outputs.

[0042] The power divider combination H is composed of multiple power dividers; the output end of the power divider combination H is connected to at least one group of antenna load branches through a coaxial cable; the antenna load branch includes at least one antenna branch and a power divider and coupler combination F; the antenna branch includes an antenna A and a circuit safety block K; the input end of the antenna A and the output end of the circuit safety block K are connected through a coaxial cable; the power divider and coupler combination F is used to further divide each of the multiple small-power outputs of the power divider combination H into antenna branches in a nearly equal manner; the circuit safety block K is used to ensure that the transmission power and energy of the antenna A meet the requirements of the transmission power and the energy of the intrinsically safe explosion-proof circuit in an explosive hazardous environment; the power divider and coupler combination F is composed of multiple power dividers and couplers; the output end of the power divider combination H and the input end of the power divider and coupler combination F are connected through a coaxial cable; the output end of the power divider and coupler combination F and the input end of the circuit safety block are connected through a coaxial cable.

[0043] The baseband processing unit J, the radio frequency remote unit I, the power divider combination H, and the power divider and coupler combination F are arranged in a non-hazardous place; the circuit safety block K and the antenna A are arranged in a hazardous place.

[0044] In a specific embodiment, the antenna branch further includes a first explosion-proof junction box B; the antenna A and the circuit safety block K are connected to the first explosion-proof junction box B.

[0045] In a specific embodiment, the circuit safety block K includes a first capacitor C, a first fuse D, a second capacitor E, and a second explosion-proof junction box M; the first capacitor C, the first fuse D, and the second capacitor E are arranged in the second explosion-proof junction box M; the first capacitor C, the first fuse D, and the second capacitor E are connected in series; the antenna A is connected to the first capacitor C; the second capacitor E is connected to the power divider and coupler combination F.

[0046] In a specific embodiment, a second fuse G is connected between the power divider combination H and the power divider and coupler combination F.

[0047] In a specific embodiment, at least one power divider in the power divider combination H is connected in series in a tree-like structure.

[0048] In one embodiment, the coupler and the power divider are connected in series in a tree structure.

[0049] In one embodiment, the antenna A is an intrinsically safe explosion-proof antenna.

[0050] In one embodiment, the first capacitor C and the second capacitor E are high-voltage ceramic capacitors with a voltage resistance of 2KV and a capacitance of 200pF.

[0051] In this embodiment, as shown in Figure 2 The power divider is a power divider, which divides the energy of one input signal into two or more output signals. The energy values of the output interfaces can be equal or unequal. In this embodiment, the power divider is a two-way power divider, which means one input and two outputs with equal energy.

[0052] In this embodiment, as shown in Figure 3 The coupler is a device that divides one signal into two unequal signals. The coupler has three terminals: input, through, and coupling. The through terminal is the input terminal without attenuation, and the coupling terminal is the output energy with a certain attenuation. According to the power difference between the input and coupling terminals, the coupler can be divided into 5dB, 6dB, 7dB, 10dB, 15dB, 20dB, etc. The output energy of the coupling terminal of these couplers is attenuated by 5dB, 6dB, 7dB, 10dB, 15dB, 20dB, etc.

[0053] In this embodiment, the power divider and the coupler are selected as pure resistance structure, which does not contain energy storage elements such as inductors or capacitors, and meets the requirements of intrinsically safe system under fault conditions.

[0054] In this embodiment, the baseband processing unit J is connected to the radio remote unit I through an optical fiber, and the radio remote unit I is connected to the power divider combination H through a coaxial cable.

[0055] In this embodiment, as shown in Figure 4As shown, the power divider combination H refers to a tree structure in which multiple equal two power dividers are connected in series one by one to divide the energy into multiple equal energy branches for output; at the output end of each of the multiple power dividers at the last stage, equal energy can be obtained, and through this combination of power dividers, the large power energy output by the radio remote unit I is divided into multiple equal small energy branches for output, and each of these small power output branches is connected to a group of antenna load branches.

[0056] In this embodiment, the power distribution circuit realized by the power divider combination H can divide the power output by the radio remote unit I into multiple equal power branches for output, taking the rated power of 100 watts as an example, and each of these power output branches is connected to a group of antenna load branches, and each group of antenna load branches contains multiple transmitting antennas, and these antenna load branches are, for example, Figure 1 the first group of antenna load branches and the Nth group of antenna load branches.

[0057] In this embodiment, the power divider combination H divides the energy of the radio remote unit I into multiple outputs, so that the energy of each group of antenna load branches after energy division is less than 6 watts.

[0058] In this embodiment, the output interface of the first group of antenna load branches of the power divider combination H is connected to the second fuse G through a coaxial cable, and the second fuse G is a 0.05A fuse (the rated current value of the fuse can be selected according to actual needs); the rated current value of the fuse can limit the current entering the first group of antenna load branches to be less than the current when the antenna load group transmits power of 6 watts.

[0059] As shown in Figure 1 and Figure 5 As shown, the outlet of the second fuse G is connected to the inlet of the power divider and coupler combination F through a coaxial cable, and the power divider and coupler combination F is a tree structure in which a coupler and a power divider are connected in series, and the energy of the first group of antenna load branches is further divided one by one by using the proportional attenuation of the coupler and the equal division characteristics of the power divider, so that the required energy can be obtained on each transmitting antenna at the end.

[0060] Each output end of the power divider and coupler combination F is connected to the circuit safety block K through a coaxial cable, and the circuit safety block K is connected to the explosion-proof first junction box B through a coaxial cable; the live part of the antenna A and the coaxial cable of the output end of the circuit safety block K are connected in the explosion-proof first junction box B; and the antenna A is an intrinsically safe explosion-proof antenna.

[0061] In the embodiment, the transmission power of each antenna A is set to 27dbm, i.e., about 0.5W; and the transmission power of each antenna can be adjusted according to the needs of the site.

[0062] In order to evenly distribute the output energy of the high-power radio remote unit I to the multiple low-power antennas, expand the coverage range of the wireless signal, and utilize the power divider and coupler to perform tree-shaped combination and connection, the larger power is evenly distributed to each antenna at the end of the circuit. Therefore, each output interface of the radio remote unit I can be connected to a circuit network formed by the tree-shaped power divider and coupler, and the transmission power of the radio remote unit I is evenly distributed to a large number of transmission antennas by utilizing the energy distribution characteristics of the power divider and coupler. After the distribution and attenuation of the power divider and coupler, the transmission energy of each transmission antenna reaches the target transmission energy.

[0063] In order to meet the overall explosion-proof requirements of the entire 5G transmission system, the circuits and devices without explosion-proof capability are deployed in non-dangerous places, and the circuits and devices with explosion-proof capability are deployed in dangerous places. As shown in Figure 1 The baseband processing unit J, the radio remote unit I, the power divider combination H, the second fuse G, and the power divider and coupler combination F do not have explosion-proof capability and are deployed in non-dangerous places; the circuit safety block K installed in the explosion-proof second junction box M, the first junction box B, and the intrinsically safe explosion-proof antenna A have explosion-proof capability and are deployed in the dangerous place of the explosive gas environment.

[0064] In summary, the main features of the present application are:

[0065] 1. Power is distributed through a power divider combination H, limiting the power of each antenna load branch to less than 6 watts. Each antenna load branch is connected to a second fuse G, and the rated current of the second fuse G is selected to be less than the current value when 6 watts. In this way, each antenna load branch meets the requirement that the radio frequency transmission power in the explosive gas environment is less than 6 watts.

[0066] 2. The second capacitor E and the first capacitor C are high-voltage ceramic capacitors with a withstand voltage and capacitance of 2KV 200pF. They serve to isolate low-frequency AC and DC voltages and currents, ensuring that in the event of a fault in the RF remote unit I, dangerous 50Hz power frequency voltage, current, and DC will not enter the intrinsically safe explosion-proof antenna, preventing the energy of the intrinsically safe components from exceeding the limit. At the same time, the high-voltage ceramic capacitors can also prevent the power grid transmission line from being damaged by the surge wave during a lightning strike. The two capacitors connected in series also provide double protection. The low-current first fuse D can limit the large current entering the antenna A terminal in the event of capacitor breakdown. At the same time, by selecting an appropriate rated current value for the first fuse D, it can be ensured that the energy entering each antenna is less than the energy required for the intrinsically safe explosion-proof antenna. This limits the energy entering the intrinsically safe transmitting antenna from the RF remote unit I, the power divider combination H, and the power divider and coupler combination F under fault and abnormal conditions, ensuring that no energy exceeding the intrinsically safe explosion-proof requirements enters the intrinsically safe transmitting antenna.

[0067] 3. Antenna A is an intrinsically safe explosion-proof antenna.

[0068] 4. All live equipment, components, and wiring in hazardous locations meet explosion-proof requirements. For example, the live parts of the wiring cable of antenna A and the coaxial cable of circuit safety block K are connected in explosion-proof type 1 explosion-proof junction box B. The circuit of circuit safety block K is also installed in explosion-proof type 2 explosion-proof junction box M. The antenna is an intrinsically safe explosion-proof antenna. In this way, all live components and wiring deployed in hazardous locations meet explosion-proof requirements.

[0069] 5. Equipment and circuits that meet intrinsically safe explosion-proof requirements shall be deployed in hazardous locations, while equipment and circuits that do not meet intrinsically safe explosion-proof requirements shall be deployed in non-hazardous locations.

[0070] The entire 5G antenna system deployed according to the above technical characteristics can meet the requirements of intrinsically safe explosion-proof structure. The system can be used in Zone 1 and Zone 2 explosive gas environments, achieving explosion-proof capability in explosive gas environments, and has the characteristics of safety, reliability, stability and durability.

[0071] Example 3

[0072] like Figure 6 As shown, an explosion-proof method for a high-power 5G radio frequency remote unit antenna system includes the following steps:

[0073] S1. connect the output end of the baseband processing unit J and the input end of the radio remote unit I through an optical fiber, and combine the plurality of power divider groups through a power divider group combination H;

[0074] S2. construct at least one antenna load branch; the antenna load branch comprises at least one antenna branch and a power divider and coupler combination F; the antenna branch comprises an antenna A, a circuit safety block K; combine the plurality of power dividers and the plurality of coupler groups through a power divider and coupler combination F;

[0075] In this embodiment, all the power divider and coupler elements are selected to be power dividers and couplers with a pure resistance structure. Such elements do not contain energy storage elements such as inductors or capacitors, and thus meet the requirement that in the event of a fault in the intrinsic safety system, the discharge of the energy storage elements will not cause the energy in the intrinsic safety circuit to exceed the standard.

[0076] In this embodiment, all the elements and circuits of the circuit safety block K are installed in a second explosion-proof junction box M that meets the explosion-proof requirements.

[0077] In this embodiment, the antenna A is an intrinsic safety type explosion-proof antenna that meets the explosion-proof requirements.

[0078] In this embodiment, a first explosion-proof junction box B is also connected in series between the circuit safety block K and the antenna A. The first explosion-proof junction box B is used to connect the coaxial cable connection of the antenna A and the coaxial cable connection at the outlet of the circuit safety block K in the first explosion-proof junction box B. The first explosion-proof junction box B is selected to be an explosion-proof junction box that meets the explosion-proof requirements.

[0079] S3. set the circuit safety block K, the first explosion-proof junction box B, and the antenna A in a hazardous location, and set the baseband processing unit J, the radio remote unit I, the power divider combination H, the second fuse G, and the power divider and coupler combination F in a non-hazardous location;

[0080] S4. connect the input end of the power divider combination H and the output end of the radio remote unit I through a coaxial cable; and divide the output of the radio remote unit I into a plurality of small power outputs through the power divider combination H;

[0081] S5. connect the output end of the power divider combination H and at least one antenna load branch through a coaxial cable; specifically, connect the input end of the power divider and coupler combination F of the antenna load branch and the output end of the power divider combination H through a coaxial cable; and divide each of the plurality of small power outputs of the power divider combination H through the power divider and coupler combination F and distribute them to each antenna branch in a nearly equal manner;

[0082] In the embodiment, a second safety tube G is also provided. After each output of the power divider combination H is connected to the input of the second safety tube G, the output of the second safety tube G is connected to the input of the power divider and coupler combination F.

[0083] S6. The input of the circuit safety block K of the antenna branch is connected to each output of the power divider and coupler combination F through a coaxial cable, and the output of the circuit safety block K of the antenna branch is connected to the antenna A through a coaxial cable. The transmitting power and the energy of the antenna A are ensured to meet the transmitting power requirement of the explosive hazardous environment and the energy requirement of the intrinsically safe explosion-proof circuit respectively through the circuit safety block K, and the explosion-proof setting is completed.

[0084] In one specific embodiment, as shown in Figure 5 In step S5, the power divider and coupler combination F is used to divide each group of antenna load branches connected by the output of the power divider combination H into more outputs, and further divide the power of each group of antenna load branches into multiple paths to be distributed to multiple antenna lines in a nearly equal manner. Specifically, the number of antennas A connected to meet the energy distribution requirement of explosion-proof is calculated according to the energy of each group of antenna load branches. Through the power divider and coupler combination F, the power of the Nth group of antenna A load branches is distributed to each antenna A in a nearly equal manner, which expands the coverage range of the wireless signal and limits the energy of each antenna A to meet the energy value of the transmitting power requirement of the explosive hazardous environment.

[0085] In the embodiment, all the power dividers use equal division two power dividers.

[0086] In the embodiment, as shown in Figure 4 The power divider combination H is a tree structure series connection of multiple power dividers. The power divider combination after series connection divides one large power output into multiple small power outputs, and each output of the power divider combination H is connected to one group of antenna load branches. The power of each 100-watt (the output power of different models of RRU devices is different, and in the embodiment, it is 100 watts) load output interface of the radio remote unit I is divided into multiple groups of antenna load branches by the power divider combination H, and the energy of each group of antenna load branches is limited to within 6 watts, so that the power of each group of antenna load branches can meet the requirement that the radio frequency power in the explosive gas environment is less than 6 watts.

[0087] In the embodiment, the power divider combination H is connected to multiple groups of antenna load branch outputs, and each group of antenna load branches is connected to multiple antenna branches, as shown in Figure 1The first group of antenna load branch, the Nth group of antenna load branch and so on, each group of antenna load branch is connected with a second fuse G after the power divider combination H, the rated current of the second fuse G is set to be less than the current when the output power of the antenna load branch is 6 watts. When the circuit of the power divider combination H fails or is abnormal, causing the current of the Nth group of antenna load branch to exceed the current of 6 watts of power, the second fuse G of the antenna load branch will be fused to protect, ensuring that the power of the Nth group of antenna load branch is less than the requirement that the radio frequency power in the explosive gas environment is less than 6 watts.

[0088] In this embodiment, as shown in Figure 5 As shown, the second fuse G of the Nth group of antenna load branch is connected with a power divider and coupler combination F, the power divider and coupler combination F can distribute energy to each antenna, distribute the power of the Nth group of antenna load branch to multiple transmitting antennas such as antenna A in a nearly equal manner, expand the coverage range of wireless signals, and limit the energy of each antenna to be less than the required energy value of the intrinsically safe explosion-proof antenna.

[0089] In this embodiment, each antenna branch is provided with a circuit safety block K, which includes a second capacitor E, a first fuse D and a first capacitor C connected in series, and the second capacitor E and the first capacitor C are high-voltage porcelain capacitors with a voltage resistance of 2KV and a capacitance of 200pF. Each capacitor can isolate low-frequency alternating current and direct current, so that in the event of a fault of the radio frequency remote unit I, dangerous high-power 50Hz alternating current or direct current will not enter the antenna A. At the same time, the high-voltage porcelain capacitor with high voltage resistance can prevent the impact wave of the power grid transmission line from breaking down the capacitor when it is struck by lightning, and the two capacitors connected in series can provide double protection. The small-flow first fuse D can limit the large current from entering the antenna A in the event of accidental breakdown of the capacitor, and by selecting the rated current value of the first fuse D, the energy entering each antenna is ensured to be less than the required energy of the intrinsically safe explosion-proof antenna, and the transmitting power of each antenna meets the requirements of the transmitting power in explosive hazardous places, that is, it meets the requirements of the intrinsically safe explosion-proof.

[0090] In this embodiment, all components and circuits of the circuit safety block K are installed in the explosion-proof second explosion-proof junction box M which meets the explosion-proof requirements.

[0091] In this embodiment, the circuit safety block K and the antenna A are also connected in series with the first explosion-proof junction box B. The first explosion-proof junction box B connects the coaxial cable connection of the antenna A and the coaxial cable connection of the outlet of the circuit safety block K in the first explosion-proof junction box B. The first explosion-proof junction box B is selected to be an explosion-proof junction box that meets the explosion-proof requirements.

[0092] In the embodiment, the antenna A selects an intrinsically safe explosion-proof antenna meeting the explosion-proof requirement.

[0093] In the embodiment, the circuits and devices without explosion-proof capability are deployed in a non-dangerous place, and the circuits and devices with explosion-proof capability are deployed in a dangerous place. The devices and circuits such as the baseband processing unit J, the radio remote unit I, the power divider combination H, the second safety tube G, and the power divider and coupler combination F do not have explosion-proof capability and are deployed in a non-dangerous place. The circuits and devices with explosion-proof capability such as the circuit safety block K installed in the explosion-proof second explosion-proof junction box M, the first explosion-proof junction box B, and the explosion-proof antenna A are deployed in a dangerous place in an explosive gas environment.

[0094] In the embodiment, all the power divider and coupler elements are selected to be power dividers and couplers with a pure resistance structure. The element with such a structure does not contain energy storage elements such as inductors or capacitors, and meets the condition that the discharge of the energy storage element does not cause the energy of the intrinsically safe line to exceed the standard under the intrinsically safe explosion-proof condition.

[0095] The explosion-proof method of the high-power 5G radio remote unit antenna system of the application makes the 5G circuit system form an intrinsically safe explosion-proof circuit system meeting the explosion-proof requirement.

[0096] Obviously, the above embodiments of the application are merely examples for clearly illustrating the application, and are not intended to limit the implementation modes of the application. Any modification, equivalent replacement, and improvement within the spirit and principle of the application should be included in the protection scope of the claims of the application.

Claims

1. A high power 5G radio remote unit antenna system, characterized by: It includes baseband processing unit (J), radio remote unit (I), power divider combination (H), at least 1 group of antenna load branch; The baseband processing unit (J), radio remote unit (I) are connected through optical fiber, and the output end of radio remote unit (I) is connected with the input end of power divider combination (H) through coaxial cable; The power divider combination (H) is used for dividing the output of radio remote unit (I) into multiple small power outputs; Wherein, the power divider combination (H) is composed of multiple power dividers; The output end of power divider combination (H) is connected with at least 1 group of antenna load branch through coaxial cable; The antenna load branch includes at least 1 antenna branch and a power divider and coupler combination (F); The antenna branch includes antenna (A), circuit safety block (K); The input end of antenna (A) and the output end of circuit safety block (K) are connected through coaxial cable; The power divider and coupler combination (F) is used for dividing each of the multiple small power outputs of power divider combination (H) output into each antenna branch; The circuit safety block (K) is used for ensuring that the transmitting power and energy of antenna (A) meet the transmitting power requirement of explosive hazardous environment and the energy requirement of intrinsically safe explosion-proof circuit respectively; The circuit safety block (K) includes 1st capacitor (C), 1st safety tube (D), 2nd capacitor (E), 2nd explosion-proof junction box (M); 1st capacitor (C), 1st safety tube (D), 2nd capacitor (E) are all arranged in 2nd explosion-proof junction box (M); The 1st capacitor (C), 1st safety tube (D), 2nd capacitor (E) are connected in series; The antenna (A) is connected with 1st capacitor (C); The 2nd capacitor (E) is connected with power divider and coupler combination (F); The power divider and coupler combination (F) is composed of multiple power dividers and couplers; The output end of power divider combination (H) and the input end of power divider and coupler combination (F) are connected through coaxial cable; The output end of power divider and coupler combination (F) and the input end of circuit safety block are connected through coaxial cable; The baseband processing unit (J), radio remote unit (I), power divider combination (H), power divider and coupler combination (F) are arranged in non-dangerous place; Circuit safety block (K), antenna (A) are arranged in dangerous place.

2. The high power 5G radio remote electronic unit antenna system of claim 1, wherein: The antenna branch further includes 1st explosion-proof junction box (B); The connection of antenna (A) and circuit safety block (K) is connected in 1st explosion-proof junction box (B).

3. The high power 5G radio remote electrical unit antenna system of claim 1, wherein: The 2nd safety tube (G) is further connected between power divider combination (H) and power divider and coupler combination (F).

4. The high power 5G radio remote electronic unit antenna system of claim 1, wherein: In the power divider combination (H), multiple power dividers are connected in series according to tree structure.

5. The high power 5G radio remote electronic unit antenna system of claim 1, wherein: In the power divider and coupler combination (F), multiple couplers and multiple power dividers are matched with each other and connected in series according to tree structure.

6. The high power 5G radio remote electronic unit antenna system of claim 1, wherein: The antenna (A) is intrinsically safe explosion-proof antenna.

7. The high power 5G radio remote electronic unit antenna system of claim 1, wherein: 1st capacitor (C), 2nd capacitor (E) are high-voltage porcelain capacitor with 2KV200pF voltage and capacity.

8. An explosion-proof method of a high-power 5G radio frequency remote unit antenna system, characterized in that: It includes the following steps: S1. connecting the output end of the baseband processing unit (J) and the input end of the radio remote unit (I) through an optical fiber, and combining the plurality of power divider groups (H) through a plurality of power divider and coupler groups (F); S2. constructing at least one antenna load branch; the antenna load branch comprises at least one antenna branch and a power divider and coupler group (F); the antenna branch comprises an antenna (A) and a circuit safety block (K); the power divider and coupler group (F) is combined through a plurality of power dividers and a plurality of couplers; S3. arranging the circuit safety block (K) and the antenna (A) in a dangerous place, and arranging the baseband processing unit (J), the radio remote unit (I), the power divider group (H) and the power divider and coupler group (F) in a non-dangerous place; S4. connecting the input end of the power divider group (H) and the output end of the radio remote unit (I) through a coaxial cable; and dividing the output of the radio remote unit (I) into a plurality of small-power outputs through the power divider group (H); S5. connecting the output end of the power divider group (H) and the at least one antenna load branch through a coaxial cable; specifically, connecting the input end of the power divider and coupler group (F) of the antenna load branch and the output end of the power divider group (H) through a coaxial cable; and dividing each of the plurality of small-power outputs of the power divider group (H) into each antenna line through the power divider and coupler group (F); S6. connecting the input end of the circuit safety block (K) of the antenna branch and each output end of the power divider and coupler group (F) through a coaxial cable, and connecting the output end of the circuit safety block (K) of the antenna branch and the antenna (A) through a coaxial cable; the circuit safety block (K) comprises a first capacitor (C), a first fuse (D) and a second capacitor (E); the first capacitor (C), the first fuse (D) and the second capacitor (E) are arranged in the second explosion-proof junction box (M); the first capacitor (C), the first fuse (D) and the second capacitor (E) are connected in series; the antenna (A) is connected with the first capacitor (C); the second capacitor (E) is connected with the power divider and coupler group (F); the circuit safety block (K) ensures that the transmitting power and the energy of the antenna (A) meet the requirements of the transmitting power and the energy of the intrinsically safe explosion-proof circuit respectively, and completes the explosion-proof setting.

9. The method of claim 8, wherein the method further comprises: In step S5, each of the plurality of small-power outputs of the power divider group (H) is divided into each antenna branch through the power divider and coupler group (F); specifically, according to the number of antennas, the energy distribution of each antenna (A) is calculated, and the power of the Nth antenna (A) load branch is evenly distributed to each antenna (A) through the power divider and coupler group (F), so as to expand the coverage range of the wireless signal, and limit the energy of each antenna (A) to an energy value meeting the requirements of the transmitting power of the explosive dangerous place.

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