A radio frequency signal acquisition system and method of use

Abstract

The application relates to a radio frequency signal acquisition system and a use method, which comprise an aluminum shell cabinet, a blade type digital acquisition master control board, a blade type frequency synthesis master control board, a blade type frequency synthesis module, a blade type frequency synthesis module, a blade type frequency synthesis module and a blade type power supply module. The radio frequency signal acquisition system can quickly access three different frequency bands of antennas to realize wide-band acquisition of radio frequency signals emitted by radars, base stations, transmitters and the like, improves the signal acquisition and analysis efficiency of experimenters, and solves the problems of low modularization, poor channel and frequency band configuration flexibility, high labor intensity, difficult maintenance and repair, long fault elimination time and the like in the prior art.

Description

Technical Field

[0001] This invention relates to the field of radio frequency signal acquisition, specifically to a radio frequency signal acquisition system and its usage method. Background Technology

[0002] With the rapid development of communication, radar, and jamming systems and the increasing demand for related talent, there is an urgent need for a wide-bandwidth, high-performance, and easy-to-maintain radio frequency (RF) signal acquisition system to enable rapid troubleshooting, solution verification, and teaching demonstrations of RF systems. RF signals cannot be directly observed; therefore, researchers and engineers often need to acquire RF signals over a specific time period for analysis and verification during research or testing. Traditional oscilloscopes and signal analyzers also have signal acquisition capabilities, but their complex configurations, channel configurations, and low integration significantly impact operator efficiency.

[0003] Existing RF signal acquisition devices typically rely on traditional oscilloscopes and signal analyzers, often directly storing signals acquired by digital oscilloscopes or signal analyzers. This results in limited storage space and drawbacks such as low modularity, poor flexibility in channel and frequency band configuration, high manual labor intensity, difficult maintenance and repair, and long troubleshooting times. Dedicated acquisition devices on the market are often developed for specific projects, lacking versatility and being expensive. To address these shortcomings and improve the efficiency of RF signal analysis, it is necessary to invent a dedicated portable RF signal acquisition device. Summary of the Invention

[0004] The purpose of this invention is to provide a radio frequency signal acquisition system and its usage method to solve the defects of existing radio frequency signal acquisition devices, such as low modularity, poor flexibility in channel and frequency band configuration, high manual labor intensity, difficult maintenance and repair, and long troubleshooting time.

[0005] To achieve the above objectives, according to a first aspect of the present invention, the present invention adopts the following technical solution:

[0006] A radio frequency signal acquisition system includes a chassis and multiple circuit boards. The circuit boards include a blade-type digital acquisition main control board, a blade-type frequency synthesizer main control board, a first blade-type frequency synthesizer module, a second blade-type frequency synthesizer module, a third blade-type frequency synthesizer module, and a blade-type power supply module. The chassis features rack mounting holes and handles on both the left and right sides of its front. The bottom and top of the chassis are constructed with perforated metal mesh. A pull-out fan mount is installed at the bottom and secured with fan mount studs. The circuit board slots are arranged sequentially from left to right: blade-type digital acquisition main control board, blade-type frequency synthesizer main control board, first blade-type frequency synthesizer module, second blade-type frequency synthesizer module, third blade-type frequency synthesizer module, and blade-type power supply module. Each circuit board is protected by a shielding shell. Interconnection between circuit boards is achieved through a chassis backplate and board connectors inside the chassis. Unused slots in the chassis are enclosed by baffles. A power input interface and a power switch are located on the back of the aluminum chassis.

[0007] Furthermore, the blade-type digital acquisition main control board has board removal aids at both the top and bottom of the front panel. The blade-type digital acquisition main control board has the following components from top to bottom: clock output port, reference clock input port, first channel intermediate frequency input port, USB debugging port, second channel intermediate frequency input port, third channel intermediate frequency input port, second debugging port, and Ethernet port.

[0008] Furthermore, the blade-type frequency synthesizer main control board has board removal aids at both the top and bottom of the front panel, and the front panel of the blade-type frequency synthesizer main control board has a first debugging port.

[0009] Furthermore, the first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module, and the third blade-type frequency synthesizer module all have board removal tools at the top and bottom of their front panels. The front panel of the first blade-type frequency synthesizer module has a first channel RF input port and a first channel IF output port in sequence from top to bottom. The front panel of the second blade-type frequency synthesizer module has a second channel RF input port and a second channel IF output port in sequence from top to bottom. The front panel of the third blade-type frequency synthesizer module has a third channel RF input port and a third channel IF output port in sequence from top to bottom.

[0010] Furthermore, the blade power module has card pullers at both the top and bottom of its front panel, and the tail of the blade power module is connected to the power input interface via a power distributor, which supplies power to the chassis back panel and cooling fan via electrical connection.

[0011] Furthermore, the pull-out fan mount is equipped with three cooling fans.

[0012] Furthermore, the chassis is made of aluminum.

[0013] To achieve the above objectives, according to a second aspect of the present invention, the present invention adopts the following technical solution:

[0014] The method of using the radio frequency signal acquisition system described above is characterized in that: after the radio frequency signal acquisition system is installed and put into operation, it is connected to the Internet via an Ethernet port using a network cable to achieve remote management and data acquisition. Then, the first, second, and third intermediate frequency output ports on the first, second, and third blade-type frequency synthesizer modules are connected to the first, second, and third intermediate frequency input ports on the blade-type digital acquisition main control board panel respectively via radio frequency cables. If a reference clock is to be output or input, the clock on the blade-type digital acquisition main control board panel can be connected. The output or reference clock input is connected to the corresponding required device. Then, the three external excitation signal sources are connected to the first channel RF input port, the first channel RF input port, and the first channel RF input port on the first blade frequency synthesizer module, the second blade frequency synthesizer module, and the third blade frequency synthesizer module, respectively, via RF cables. Finally, signal acquisition is performed by sending a trigger command to the Ethernet. If the acquisition system needs to be upgraded offline later, the USB debugging port on the blade digital acquisition main control board can be used. If a fault occurs and the acquisition system needs to be troubleshooted, the second debugging port and the first debugging port on the blade digital acquisition main control board can be used to connect to the terminal device for fault analysis.

[0015] Furthermore, the installation steps of the radio frequency signal acquisition system described above are as follows:

[0016] (1) Fan installation: First, install the three cooling fans on the pull-out fan mount and connect the fan power supply to the power distributor.

[0017] (2) Power supply installation: Then insert the blade power module into the last slot of the aluminum chassis and insert it into the board puller to connect the blade power module to the power distributor.

[0018] (3) Installation of blade-type frequency synthesizer modules: Insert the first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module and the third blade-type frequency synthesizer module into their respective slots in the aluminum casing in sequence, and insert them into the board puller to make the first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module and the third blade-type frequency synthesizer module connected to the chassis back panel in the aluminum casing through the board connector.

[0019] (4) Installation of blade-type frequency synthesizer main control board: Insert the blade-type frequency synthesizer main control board into the slot of the aluminum casing, and insert it into the board puller until it is in place, so that the blade-type frequency synthesizer main control board is connected to the chassis back panel inside the aluminum casing through the board connector.

[0020] (5) Installation of blade-type digital acquisition main control board: Insert the blade-type digital acquisition main control board into the first slot of the aluminum casing, and insert it into the board puller until it is in place, so that the blade-type digital acquisition main control board is connected to the chassis back panel inside the aluminum casing through the board connector.

[0021] (6) Install the baffle and power on: Seal the unused slots of the aluminum casing with the baffle, then connect the power supply and turn on the power switch.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The aluminum casing of the present invention has two pairs of rack mounting holes on each side, which can be installed on various industrial control racks, test racks, and server racks, making it convenient to deploy in different data collection environments. At the same time, the device also has handles on both sides of the casing, making it easier for operators to move and install, thereby achieving rapid deployment.

[0024] 2. The aluminum chassis and each circuit board of the present invention can be separated by a circuit board removal tool. Compared with highly integrated equipment, the present invention greatly reduces the probability of damage during transportation and the time for troubleshooting. At the same time, different frequency band matching circuit boards can be replaced according to different needs.

[0025] 3. The aluminum casing and slot baffle of this invention can form a shielded space inside, which can protect the inside of the equipment and prevent the complex external electromagnetic environment from interfering with the data acquisition. The main material of the aluminum casing is aluminum alloy, which can form electromagnetic shielding inside and block electromagnetic interference. At the same time, since all boards are equipped with shielding shells, the anti-interference ability of the equipment can be further enhanced. In addition, the aluminum casing of the equipment is grounded, which can prevent leakage interference.

[0026] 4. This invention has three parallel acquisition channels, which can be connected to different antennas and signal sources to cover different frequency bands for acquisition and analysis of broadband signals without switching antennas back and forth or reproducing signal excitation, greatly reducing the intensity of manual labor and the complexity of acquisition.

[0027] 5. The present invention adopts the following innovative measures for heat dissipation: the top and bottom of the aluminum casing are made of hollow metal mesh, and the cooling fan is fixed on a pull-out fan mount, which makes it easier to replace and clean the fan while meeting the heat dissipation requirements.

[0028] 6. This invention connects to the Internet via an Ethernet interface, enabling remote acquisition of radio frequency signals. It can acquire signals in harsh and special environments, thus improving the flexibility of acquisition. Attached Figure Description

[0029] Figure 1 This is a front view of the radio frequency signal acquisition system of the present invention;

[0030] Figure 2 This is a top view of the radio frequency signal acquisition system of the present invention;

[0031] Figure 3 This is a top-view perspective structural diagram of a radio frequency signal acquisition system according to the present invention;

[0032] In the diagram: 1. Aluminum chassis; 2. Board puller; 3. Blade-type frequency synthesizer main control board; 4. First blade-type frequency synthesizer module; 5. Second blade-type frequency synthesizer module; 6. Third blade-type frequency synthesizer module; 7. Slot baffle; 8. Blade-type power supply module; 9. Chassis handle; 10. Rack mounting holes; 11. Fan mount studs; 12. Pull-out fan mount; 13. Blade-type digital acquisition main control board; 201. Clock output port; 202. Reference clock input port; 203. First channel intermediate frequency input port; 204. USB debugging port; 205. Second channel intermediate frequency input port; 206. Third channel intermediate frequency input port; 207. Second debugging port; 208. Ethernet port; 209. First debugging port; 210. First channel RF input port; 211. First channel intermediate frequency output port; 212. Second channel RF input port; 213. Second channel intermediate frequency output port; 214. Third channel RF input port; 215. Third channel intermediate frequency output port; 301. Cooling fan; 302. Chassis back panel; 303. Board connector; 304. Power input interface; 305. Power distributor; 306. Metal mesh; 307. Power switch. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] In the description of this invention, unless otherwise stated, the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "adjustment port 1" and "adjustment port 2" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Please see Figure 1-3 The present invention provides an radio frequency signal acquisition system, comprising an aluminum chassis 1, a blade-type digital acquisition main control board 13, a blade-type frequency synthesizer main control board 3, a first blade-type frequency synthesizer module 4, a second blade-type frequency synthesizer module 5, a third blade-type frequency synthesizer module 6, and a blade-type power supply module 8. The aluminum chassis 1 has four rack mounting holes 10 and chassis handles 9 on both the left and right sides of the front, which can be installed on various industrial control racks, test racks, and server racks, making it convenient to deploy in acquisition sites in different environments. It also makes it easier for operators to move and install, thereby achieving rapid deployment.

[0037] The bottom and top of the aluminum casing 1 are both made of metal perforated mesh 306. The bottom is equipped with a pull-out fan mount 12, which is fixed by fan mount fixing studs 11. The pull-out fan mount 12 is equipped with three cooling fans 301, which makes it easier to replace and clean the fans while meeting the heat dissipation requirements.

[0038] The aluminum chassis 1 has the following board slots arranged from left to right: blade-type digital acquisition main control board 13, blade-type frequency synthesizer main control board 3, first blade-type frequency synthesizer module 4, second blade-type frequency synthesizer module 5, third blade-type frequency synthesizer module 6, and blade-type power supply module 8. The aluminum chassis and each board can be separated using a board removal tool. Compared to highly integrated equipment, this invention greatly reduces the probability of damage during transportation and the time required for troubleshooting. Furthermore, different frequency band matching boards can be replaced according to different needs. Each board is protected by a shielding shell through the aluminum chassis. The internal chassis backplate 302 and board connector 303 enable board-to-board interconnection. All unused slots in the aluminum chassis 1 are enclosed by baffles 7. On the one hand, the aluminum chassis 1 can form a shielded space inside, which can protect the inside of the equipment and prevent interference from complex external electromagnetic environments. The main material of the aluminum chassis is aluminum alloy, which can form electromagnetic shielding inside and block electromagnetic interference. On the other hand, since all boards are equipped with shielding shells, the anti-interference capability of the equipment can be further enhanced. In addition, the aluminum chassis 1 of the equipment is grounded, which can prevent leakage interference.

[0039] The first blade-type frequency synthesizer module 4, the second blade-type frequency synthesizer module 5, and the third blade-type frequency synthesizer module 6 all have board pullers 2 at the top and bottom of their front panels. The front panel of the first blade-type frequency synthesizer module 4 has, from top to bottom, a first-channel RF input port 210 and a first-channel IF output port 211. The front panel of the second blade-type frequency synthesizer module 5 has, from top to bottom, a second-channel RF input port 212 and a second-channel IF output port 213. The front panel of the third blade-type frequency synthesizer module 6 has, from top to bottom, a third-channel RF input port 214 and a third-channel IF output port 215. This invention has three parallel acquisition channels, which can be connected to different antennas and signal sources to cover different frequency bands, enabling the acquisition and analysis of broadband signals without switching antennas back and forth or reproducing signal excitation, greatly reducing manual labor intensity and acquisition complexity.

[0040] The blade-type digital acquisition main control board 13 has board pullers 2 at both the top and bottom of its front panel. From top to bottom, the front panel of the blade-type digital acquisition main control board 13 has the following: clock output port 201, reference clock input port 202, channel 1 intermediate frequency input port 203, USB debugging port 204, channel 2 intermediate frequency input port 205, channel 3 intermediate frequency input port 206, debugging port 207, and Ethernet port 208. It can be connected to the Internet through the Ethernet interface, enabling remote acquisition of radio frequency signals. It can acquire signals in harsh and special environments, improving the flexibility of acquisition.

[0041] The installation steps for the radio frequency signal acquisition system are as follows:

[0042] (1) Fan installation: First, install the three cooling fans 301 on the pull-out fan mount and connect the fan power supply to the power distributor 305.

[0043] (2) Power supply installation: Then insert the blade power module 8 into the last slot of the aluminum chassis 1 and insert it into the board puller 2 to connect the blade power module 8 to the power distributor 305.

[0044] (3) Installation of blade-type frequency synthesizer modules: Insert the first blade-type frequency synthesizer module 4, the second blade-type frequency synthesizer module 5, and the third blade-type frequency synthesizer module 6 into their respective slots in the aluminum casing 1 in sequence, and insert them into the board puller 2 so that the first blade-type frequency synthesizer module 4, the second blade-type frequency synthesizer module 5, and the third blade-type frequency synthesizer module 6 are connected to the chassis back panel 302 inside the aluminum casing 1 through the board connector 303.

[0045] (4) Installation of blade-type frequency integrated circuit main control board: Insert the blade-type frequency integrated circuit main control board 3 into slot 3 of the aluminum casing 1 and insert it into the board card puller 2 so that the blade-type frequency integrated circuit main control board 3 is connected to the chassis back plate 302 inside the aluminum casing 1 through the board card connector 303.

[0046] (5) Installation of blade-type digital acquisition main control board: Insert the blade-type digital acquisition main control board 13 into slot 1 of the aluminum casing 1 and insert it into the board puller 2 so that the blade-type digital acquisition main control board 13 is connected to the chassis back plate 302 inside the aluminum casing 1 through the board connector 303.

[0047] (6) Install the baffle and power on: Seal the unused slot of the aluminum casing 1 with the baffle 7, then connect the power supply and turn on the power switch 307.

[0048] The method of using the system described above in this invention is as follows:

[0049] Start the operation: Connect the RF signal acquisition system to the Internet via Ethernet port 208 using a network cable to achieve remote management and data acquisition. Then, connect the first-channel IF output port 211, second-channel IF output port 213, and third-channel IF output port 215 on the first blade-type frequency synthesizer module 4, the second-channel IF synthesizer module 5, and the third-channel IF synthesizer module 6 to the first-channel IF input port 203, the second-channel IF input port 205, and the third-channel IF input port 206 on the blade-type digital acquisition main control board 13 panel via RF cables. To output or input a reference clock, connect the clock output 201 or reference clock input 202 on the blade-type digital acquisition main control board 13 panel to the corresponding input. On the equipment, three external excitation signal sources will be connected to the first channel RF input port 210, the second channel RF input port 212, and the third channel RF input port 214 of the first blade-type frequency synthesizer module 4, the second blade-type frequency synthesizer module 5, and the third blade-type frequency synthesizer module 6 respectively via RF cables. Finally, signal acquisition is performed by sending a trigger command to the Ethernet. If the acquisition system needs to be upgraded offline later, the USB debugging port on the panel of the blade-type digital acquisition main control board 13 can be used. If a fault occurs and the acquisition system needs to be troubleshooted, the second debugging port 207 and the first debugging port 209 on the panel of the blade-type digital acquisition main control board 13 can be used to connect to the terminal device for fault analysis.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method of using a radio frequency signal acquisition system, characterized in that: The radio frequency signal acquisition system includes a chassis (1) and multiple boards, including a blade-type digital acquisition main control board (13), a blade-type frequency synthesizer main control board (3), a first blade-type frequency synthesizer module (4), a second blade-type frequency synthesizer module (5), a third blade-type frequency synthesizer module (6), and a blade-type power supply module (8). The chassis (1) has rack mounting holes (10) and chassis handles (9) on both the left and right sides of its front. The chassis (1) has a metal perforated mesh (306) at the bottom and top. A pull-out fan mount (12) is installed at the bottom and fixed by fan mount fixing studs (11). The board slots of the chassis (1) are arranged sequentially from left to right as follows: blade-type digital acquisition main control board (13), blade-type frequency synthesizer main control board (3), first blade-type frequency synthesizer module (4), second blade-type frequency synthesizer module (5), and third blade-type power supply module (8). The blade-type frequency synthesizer module (6) and the blade-type power supply module (8) are all protected by shielded shells. The interconnection between boards is achieved through the chassis back panel (302) and board connector (303) inside the chassis. The unused slots of the chassis (1) are all closed by baffles (7). The back of the chassis (1) has a power input interface (304) and a power switch (307). The blade-type digital acquisition main control board (13) has board pullers (2) at the top and bottom of the front panel. The blade-type digital acquisition main control board (13) has the following from top to bottom on the front panel: clock output port (201), reference clock input port (202), first channel intermediate frequency input port (203), USB debugging port (204), second channel intermediate frequency input port (205), third channel intermediate frequency input port (206), second debugging port (207), and Ethernet port (208). The blade-type frequency synthesizer main control board (3) has a board card puller (2) at the top and bottom of the front panel, and the blade-type frequency synthesizer main control board (3) has a first debugging port (209) on the front panel. The first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module, and the third blade-type frequency synthesizer module all have board removal tools at the top and bottom of their front panels. The front panel of the first blade-type frequency synthesizer module has a first channel RF input port (210) and a first channel IF output port (211) from top to bottom. The front panel of the second blade-type frequency synthesizer module has a second channel RF input port (212) and a second channel IF output port (213) from top to bottom. The front panel of the third blade-type frequency synthesizer module has a third channel RF input port (214) and a third channel IF output port (215) from top to bottom. After the radio frequency signal acquisition system is installed and put into operation, the radio frequency signal acquisition system is connected to the Internet via the Ethernet port (208) through a network cable to realize remote management and data acquisition. Then, the first channel intermediate frequency output port (211), the second channel intermediate frequency output port (213), and the third channel intermediate frequency output port (215) on the first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module, and the third blade-type frequency synthesizer module are connected to the first channel intermediate frequency input port (203), the second channel intermediate frequency input port (205), and the third channel intermediate frequency input port (206) on the panel of the blade-type digital acquisition main control board (13) through radio frequency cables. If you want to output or input a reference clock, you can connect the clock output port (206) on the panel of the blade-type digital acquisition main control board (13). 01) or the reference clock input port (202) is connected to the corresponding required device, and the first channel RF input port (210), the second channel RF input port (212), and the third channel RF input port (214) on the first blade-type frequency synthesizer module, the second blade-type frequency synthesizer module, and the third blade-type frequency synthesizer module are respectively connected. Finally, the signal is acquired by sending a trigger command to the Ethernet. If the acquisition system needs to be upgraded offline later, the USB debugging port on the panel of the blade-type digital acquisition main control board (13) can be used. If a fault occurs and the acquisition system needs to be troubleshooted, the second debugging port (207) on the panel of the blade-type digital acquisition main control board (13) and the first debugging port (209) on the panel of the blade-type digital acquisition main control board (13) can be used to connect to the terminal device for fault analysis.

2. The method of use according to claim 1, characterized in that: The blade power module (8) has a board puller (2) at the top and bottom of the front panel. The tail of the blade power module (8) is connected to the power input interface (304) through a power distributor (305). The power distributor (305) supplies power to the chassis back panel (302) and the cooling fan (301) through an electrical connection.

3. The method of use according to claim 1, characterized in that: The pull-out fan mount (12) is equipped with three cooling fans (301).

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