A multifunctional integrated low-frequency band radio frequency rack verification environment platform

Abstract

This utility model discloses a multifunctional integrated low-frequency radio frequency rack verification environment platform, belonging to the field of radio frequency testing technology. It includes a platform body with a detection cavity. A cavity door with a handle slides through the opening of the detection cavity. An radio frequency signal generator is mounted on the side of the platform body, and an radio frequency receiver is mounted on the side wall of the detection cavity. The transmitter of the radio frequency signal generator is located inside the detection cavity. A heater is mounted on the top of the detection cavity. The platform body has an internal cavity containing an insulated box for storing liquid nitrogen. A U-shaped tube is installed inside the insulated box. Several air vents connect the detection cavity and the internal cavity. A gas shroud covers the air vents on the top of the cavity. A gas supply component is embedded on the outside of the platform body. This technical solution solves the technical problem of radio frequency testing in a wide-temperature environment by expanding the temperature control range, providing a testing environment for the reliability assessment of radio frequency equipment.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency testing technology, specifically a multi-functional integrated low-frequency radio frequency rack verification environment platform. Background Technology

[0002] In the research, development, production, and quality testing of low-frequency radio frequency (RF) equipment, a low-frequency RF rack verification environment platform is an indispensable key facility. This platform comprehensively verifies the signal transmission, reception, and anti-interference performance of RF equipment by simulating real-world working scenarios, providing crucial data for equipment performance optimization and reliability assessment. It is widely used in fields such as communication equipment development, aerospace, and broadcasting.

[0003] However, existing low-frequency RF rack verification environment platforms have significant shortcomings in temperature adaptability. Conventional platforms have narrow temperature control ranges, mostly limited to room temperature ±20°C, making it difficult to simulate temperature conditions in extreme environments such as polar regions and deserts, and unable to comprehensively evaluate the performance of RF equipment across the entire temperature range. When the temperature exceeds the conventional range, the performance of electronic components inside the equipment will change significantly, such as capacitor value drift and transistor gain reduction, leading to problems such as signal frequency shift and power attenuation. However, due to the limitations of temperature control, existing platforms cannot accurately capture these potential risks.

[0004] To address this, we propose a multi-functional integrated low-frequency RF rack verification environment platform. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional integrated low-frequency radio frequency rack verification environment platform to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A multifunctional integrated low-frequency radio frequency rack verification environment platform includes a platform body with a detection cavity. A cavity door with a handle slides through the opening of the detection cavity. An radio frequency signal generator is mounted on the side of the platform body, and a radio frequency receiver is mounted on the side wall of the detection cavity. The transmitter of the radio frequency signal generator is located inside the detection cavity. A heater is mounted on the top of the detection cavity. The platform body has an internal cavity containing an insulated box for storing liquid nitrogen. A U-shaped tube is installed inside the insulated box. Several air holes connect the detection cavity and the cavity. A gas hood covers the air holes on the top of the cavity. A gas supply component is embedded on the outside of the platform body. The two ends of the U-shaped tube are connected to the gas hood and the gas supply component, respectively. A temperature sensor is mounted on the side wall of the detection cavity. By combining the heater and the liquid nitrogen cooling system, the temperature control range of the detection cavity is expanded, enabling the simulation of extreme high or low temperature environments. This solves the temperature control limitations of existing platforms and provides a testing environment for the reliability assessment of radio frequency equipment in a wide temperature range.

[0008] Furthermore, the air supply component includes a connecting cover embedded on the side of the platform body. An air inlet chamber is opened on the outer side of the connecting cover, and an air outlet chamber is opened on the inner side of the connecting cover. The air inlet chamber and the air outlet chamber are connected. A cross is installed in the air outlet chamber. An exhaust fan blade is provided on one side of the cross, and a first motor is installed on the other side of the cross. The output end of the first motor is connected to the exhaust fan blade. The U-shaped tube is connected to the air outlet chamber. The first motor drives the exhaust fan blade to rotate, forming airflow power, which draws outside air into the air inlet chamber, and then presses it into the U-shaped tube through the air outlet chamber, ensuring continuous air circulation during the cooling process and improving cooling efficiency.

[0009] Furthermore, a filter screen is threadedly connected inside the air intake chamber. When air enters the air intake chamber, it is first filtered by the filter screen. The filter screen can filter out dust and impurities in the air, preventing them from entering the detection chamber or the loop tube, avoiding contamination of the testing environment or blockage of the pipeline, and ensuring the stability of equipment operation and the accuracy of test results.

[0010] Furthermore, a solenoid valve and a balancing valve are installed on the side of the platform body, and the solenoid valve, the balancing valve and the insulation box are connected. The connection between the solenoid valve and the insulation box is close to the middle of the insulation box, and the connection between the balancing valve and the insulation box is close to the top of the insulation box. The solenoid valve can control the replenishment or discharge of liquid nitrogen in the insulation box, and the balancing valve is used to regulate the gas pressure in the insulation box to prevent the gas pressure from becoming too high due to the evaporation of liquid nitrogen, so as to ensure the safe operation of the insulation box, maintain the stability of liquid nitrogen storage, and ensure the cooling effect.

[0011] Furthermore, a cover plate slides at the bottom of the detection chamber, and a connecting groove is provided on the side of the detection chamber. The cover plate slides within the connecting groove and covers several of the air holes. A rack is installed on the side of the cover plate, and a gear is installed inside the platform body. The gear and rack are meshed together. A second motor is installed inside the platform body, and the output end of the second motor is connected to the gear transmission. The second motor drives the gear to rotate, causing the rack and cover plate to slide, thereby adjusting the opening area of ​​the air holes, controlling the amount of cold air entering the detection chamber, precisely adjusting the cooling rate and temperature value, and improving temperature control accuracy.

[0012] Furthermore, a signal / spectrum analyzer is mounted on the surface of the platform body. The signal / spectrum analyzer can analyze the spectral characteristics, power distribution and other parameters of the radio frequency signal in real time. In conjunction with the radio frequency signal generator and receiver, it can realize comprehensive performance testing of radio frequency equipment and improve the functionality and testing efficiency of the platform.

[0013] Furthermore, the side of the cavity door is wrapped with a sealing strip, which can enhance the sealing between the cavity door and the detection cavity, prevent the leakage of hot and cold air in the detection cavity, ensure the temperature control effect, and at the same time avoid external environmental interference with the testing process, thereby improving the reliability of the test results.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the multifunctional integrated low-frequency radio frequency rack verification environment platform, through the combination of heater and liquid nitrogen cooling system, expands the temperature control range of the detection chamber, can simulate extreme high temperature or low temperature environment, solves the temperature control limitation problem of the existing platform, and provides a test environment for the reliability assessment of radio frequency equipment in a wide temperature environment. Attached Figure Description

[0015] Figure 1 This is a first three-dimensional structural schematic diagram of the multifunctional integrated low-frequency radio frequency rack verification environment platform disclosed in this utility model embodiment;

[0016] Figure 2 This is a second three-dimensional structural diagram of the multifunctional integrated low-frequency radio frequency rack verification environment platform disclosed in an embodiment of this utility model;

[0017] Figure 3 for Figure 2 Enlarged schematic diagram of structure A in the middle;

[0018] Figure 4 This is a cross-sectional structural schematic diagram of the multifunctional integrated low-frequency radio frequency rack verification environment platform disclosed in an embodiment of this utility model;

[0019] Figure 5 for Figure 4 A magnified schematic diagram of the B-structure.

[0020] In the diagram: 1. Platform body; 2. Chamber door; 3. Signal / spectrum analyzer; 4. RF signal generator; 5. RF receiver; 6. Heater; 7. Temperature sensor; 8. Air vent; 9. Cover plate; 10. Solenoid valve; 11. Balance valve; 12. Rack; 13. Gear; 14. Connecting cover; 15. Exhaust fan blade; 16. First motor; 17. Filter screen; 18. U-shaped tube; 19. Insulation box; 20. Air hood; 21. Cross-shaped structure. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides a technical solution: a multifunctional integrated low-frequency radio frequency rack verification environment platform, including a platform body 1, a detection cavity, a cavity door 2 with a handle sliding at the opening of the detection cavity, a radio frequency signal generator 4 mounted on the side of the platform body 1, a radio frequency receiver 5 mounted on the side wall of the detection cavity, the transmitting end of the radio frequency signal generator 4 located inside the detection cavity, a heater 6 mounted on the top of the detection cavity, a cavity inside the platform body 1, an insulation box 19 installed inside the cavity for storing liquid nitrogen, a U-shaped tube 18 installed inside the insulation box 19, and several air holes 8 connecting the detection cavity and the cavity. A gas hood 20 covers several air holes 8. An air supply component is embedded on the outside of the platform body 1. The two ends of the U-shaped tube 18 are connected to the gas hood 20 and the air supply component, respectively. A temperature sensor 7 is installed on the side wall of the detection chamber. The temperature sensor 7 monitors the temperature inside the detection chamber in real time. When heating is required, the heater 6 works; when cooling is required, the air supply component is activated. Outside air enters the U-shaped tube 18 through the air supply component, exchanges heat with the liquid nitrogen in the insulation box 19, and is then cooled. The cold air enters the detection chamber through the air holes 8 to achieve cooling. The radio frequency signal generator 4 is first connected to the signal output port of the device under test through a frequency cable, and then transmits a signal to the detection chamber. The radio frequency receiver 5 receives the signal.

[0023] As an embodiment of this utility model, the air supply component further includes a connecting cover 14 embedded on the side of the platform body 1. An air inlet chamber is opened on the outer side of the connecting cover 14, and an air outlet chamber is opened on the inner side of the connecting cover 14. The air inlet chamber and the air outlet chamber are connected. A cross 21 is installed in the air outlet chamber. An exhaust fan blade 15 is provided on one side of the cross 21, and a first motor 16 is installed on the other side of the cross 21. The output end of the first motor 16 is connected to the exhaust fan blade 15. The U-shaped tube 18 is connected to the air outlet chamber. After the first motor 16 is powered on, it drives the exhaust fan blade 15 to rotate, generating negative pressure in the air inlet chamber. Outside air enters the air inlet chamber, enters the U-shaped tube 18 through the air outlet chamber, and is cooled by contact with liquid nitrogen before being transported to the detection chamber.

[0024] As an embodiment of this utility model, a filter screen 17 is further connected to the air intake cavity by a threaded engagement. When air enters the air intake cavity, it is first filtered by the filter screen 17, impurities are intercepted, and clean air continues to flow into the subsequent channel.

[0025] As an embodiment of this utility model, a solenoid valve 10 and a balance valve 11 are further installed on the side of the platform body 1, and the solenoid valve 10, the balance valve 11 and the insulation box 19 are connected. The connection between the solenoid valve 10 and the insulation box 19 is close to the middle of the insulation box 19, and the connection between the balance valve 11 and the insulation box 19 is close to the top of the insulation box 19. When the liquid nitrogen in the insulation box 19 is insufficient, the solenoid valve 10 is opened to replenish the liquid nitrogen. When the gas pressure in the box increases due to the evaporation of liquid nitrogen, the balance valve 11 releases gas to maintain the gas pressure balance.

[0026] As an embodiment of this utility model, a cover plate 9 is slidably mounted on the bottom of the detection chamber, and a connecting groove is provided on the side of the detection chamber. The cover plate 9 slides in the connecting groove and covers several air holes 8. A rack 12 is installed on the side of the cover plate 9. A gear 13 is installed inside the platform body 1. The gear 13 and the rack 12 are meshed and connected. A second motor is installed inside the platform body 1. The output end of the second motor is connected to the gear 13. After the second motor is started, the gear 13 rotates and meshes with the rack 12, causing the cover plate 9 to slide in the connecting groove, covering or exposing the air holes 8, changing the flow area of ​​the air holes 8, and realizing the control of the cold air volume.

[0027] As an embodiment of this utility model, a signal / spectrum analyzer 3 is further installed on the surface of the platform body 1. After the radio frequency signal is transmitted and received, it is collected and analyzed by the signal / spectrum analyzer 3, which displays data such as the spectrum and power of the signal for testers to evaluate the performance of the equipment.

[0028] As an embodiment of this utility model, the side of the cavity 2 is further wrapped with a sealing strip. When the cavity 2 is closed, the sealing strip is deformed by pressure and fills the gap between the cavity 2 and the opening of the detection cavity to form a sealing structure.

[0029] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A multi-functional integrated low frequency band radio frequency rack verification environment platform, characterized in that, The system includes a platform body (1), which has a detection cavity. A door (2) with a handle slides through the opening of the detection cavity. A radio frequency signal generator (4) is mounted on the side of the platform body (1). A radio frequency receiver (5) is mounted on the side wall of the detection cavity. The transmitting end of the radio frequency signal generator (4) is located inside the detection cavity. A heater (6) is mounted on the top of the detection cavity. The platform body (1) has an internal cavity, and a heat preservation device is installed inside the cavity. The insulated box (19) is used to store liquid nitrogen. A U-shaped tube (18) is installed inside the insulated box (19). Several air holes (8) are connected between the detection chamber and the cavity. An air cover (20) is placed on the top of the cavity. The air cover (20) covers several air holes (8). An air supply component is embedded on the outside of the platform body (1). The two ends of the U-shaped tube (18) are connected to the air cover (20) and the air supply component, respectively. A temperature sensor (7) is installed on the side wall of the detection chamber.

2. The multi-functional integrated low frequency band RF rack verification environment platform of claim 1, wherein, The air supply component includes a connecting cover (14) embedded on the side of the platform body (1). An air inlet chamber is provided on the outer side of the connecting cover (14), and an air outlet chamber is provided on the inner side of the connecting cover (14). The air inlet chamber and the air outlet chamber are connected. A cross (21) is installed in the air outlet chamber. An exhaust fan (15) is provided on one side of the cross (21), and a first motor (16) is installed on the other side of the cross (21). The output end of the first motor (16) is connected to the exhaust fan (15). The U-shaped tube (18) is connected to the air outlet chamber.

3. The multifunctional integrated low-frequency radio frequency rack verification environment platform according to claim 2, characterized in that, The intake chamber is threadedly connected to a filter screen (17).

4. The multifunctional integrated low-frequency radio frequency rack verification environment platform according to claim 1, characterized in that, A solenoid valve (10) and a balance valve (11) are installed on the side of the platform body (1), and the solenoid valve (10), the balance valve (11) and the heat preservation box (19) are connected. The connection between the solenoid valve (10) and the heat preservation box (19) is close to the middle of the heat preservation box (19), and the connection between the balance valve (11) and the heat preservation box (19) is close to the top of the heat preservation box (19).

5. The multifunctional integrated low-frequency radio frequency rack verification environment platform according to claim 1, characterized in that, A cover plate (9) slides at the bottom of the detection chamber. A connecting groove is provided on the side of the detection chamber. The cover plate (9) slides in the connecting groove and covers several air holes (8). A rack (12) is installed on the side of the cover plate (9). A gear (13) is installed inside the platform body (1). The gear (13) and the rack (12) are meshed together. A second motor is installed inside the platform body (1). The output end of the second motor is connected to the gear (13) for transmission.

6. The multifunctional integrated low-frequency radio frequency rack verification environment platform according to claim 1, characterized in that, A signal / spectrum analyzer (3) is mounted on the surface of the platform body (1).

7. The multifunctional integrated low-frequency radio frequency rack verification environment platform according to claim 1, characterized in that, The side of the cavity door (2) is covered with a sealing strip.

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