Compact range test system based on OTA millimeter waves

Abstract

The invention relates to the technical field of testing, in particular to a compact range testing system based on OTA millimeter waves, which comprises a box body, a heat dissipation device is arranged in the box body, a porous supporting platform is fixedly mounted in the middle of the inner side of the box body, a testing box is mounted at the upper end of the porous supporting platform, the heat dissipation device comprises a rectangular through groove, and the rectangular through groove is formed in the middle of the upper end of the box body. A blast assembly is installed at the bottom of the box body, the upper end of the blast assembly is fixedly connected to the lower end of the driving assembly, air guide through grooves are symmetrically formed in the positions, close to the upper end, of the left side wall and the right side wall of the box body, and dust screens are installed in the air guide through grooves; an arc-shaped air guide plate is fixedly connected to the upper end of the interior of the air guide through groove, the box body capable of dissipating heat of the test box is arranged on the outer side of the test box, continuous cold air flow can be provided while heat dissipation is conducted, and therefore the running smoothness and stability of the test box are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of testing technology, specifically a compact field testing system based on OTA millimeter waves. Background Technology

[0002] With the popularization of 5G FR2 and future 6G millimeter-wave communication technologies, OTA (Over-The-Air) millimeter-wave compact field test equipment has become a core device for verifying the radio frequency performance of base stations and terminal equipment. It needs to achieve accurate detection of the radiation characteristics and signal transmission quality of the equipment in the high frequency band (24-120GHz).

[0003] During operation, this system needs to process massive amounts of test data in real time (such as multi-channel signal sampling and multi-rule compliance verification) and relies on a stable network environment to complete data transmission and command interaction. However, existing OTA millimeter-wave compact field testing systems have two problems. On the one hand, traditional traffic matching engines need to repeatedly perform rule matching on single blocks of test data (such as signal anomaly feature verification and illegal access interception), resulting in redundant calculations and ineffective consumption, leading to increased detection latency and making it easy to miss instantaneous signal anomalies during the test process, affecting the accuracy of test results. On the other hand, during high-frequency testing, the signal processing module, RF front-end, and supporting circuits in the system generate dense heat. Traditional heat dissipation methods often use a single fan to blow directly, which results in uneven distribution of cold air and low heat dissipation efficiency, causing the internal temperature of the test box to easily exceed 60°C, leading to signal attenuation, increased data sampling errors, and even frequent device start-ups and shutdowns, making it impossible to meet the requirements of long-term testing for more than 72 hours continuously. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a compact field testing system based on OTA millimeter waves. By setting a heat dissipation enclosure on the outside of the test box, a continuous supply of cool air can be provided while dissipating heat, thereby ensuring the smooth and stable operation of the test box.

[0005] The technical solution adopted by this invention to solve the above-mentioned technical problems is: a compact field testing system based on OTA millimeter wave, including a housing, a heat dissipation device inside the housing, a perforated support platform fixedly installed in the middle of the inner side of the housing, a test box installed on the upper part of the perforated support platform, and a millimeter wave signal processing module and a data temporary storage unit built into the test box; the heat dissipation device includes a rectangular through slot, a rectangular through slot is opened in the middle of the upper end of the housing, a perforated heat dissipation plate is installed inside the rectangular through slot, drive components are symmetrically installed at the left and right ends of the rectangular through slot, and a blower component is installed at the bottom of the housing. The upper end of the blower assembly is fixedly connected to the lower end of the drive assembly. The end of the drive assembly is fixedly connected to the air inlet assembly, which is fixedly installed on the outer wall of the enclosure. The left and right side walls of the enclosure are symmetrically provided with air guide slots near the upper end. A dust filter is installed in the air guide slot. An arc-shaped air guide plate is fixedly connected to the upper end of the air guide slot. The upper end of the arc-shaped air guide plate is fixedly connected to the lower end of the rectangular slot. An interference monitoring module is fixedly installed on the right side wall of the enclosure by a bracket. The radio frequency probe of the interference monitoring module faces the inside of the enclosure and is used to collect electromagnetic signals of the test environment.

[0006] Preferably, air guide slots are symmetrically provided on the left and right side walls near the upper end of the housing. A dust filter screen is installed in the air guide slot. An arc-shaped air guide plate is fixedly connected to the upper end of the air guide slot. The upper end of the arc-shaped air guide plate is fixedly connected to the lower end of the rectangular slot.

[0007] Preferably, the vent holes on the porous heat sink have an inner diameter that is smaller at the top and larger at the bottom.

[0008] Preferably, the blower assembly includes a blower motor, which is fixedly installed at the bottom of the housing. A first pulley is fixedly installed at the top of the blower motor, and second pulleys are symmetrically arranged on both sides of the first pulley. The second pulleys are connected to the first pulley by a ring belt. The second pulleys are mounted on a pulley shaft, and the lower end of the pulley shaft is rotatably installed at the bottom of the housing. A blower blade assembly is fixedly connected to the upper end of the pulley shaft, and the upper end of the blower blade assembly is fixedly connected to the lower end of the porous support platform.

[0009] Preferably, an incomplete gear is provided on the pulley shaft above the second pulley, and a first gear is meshed with the side of the incomplete gear. The first gear is fixedly installed on the upper end of the gear shaft, and the lower end of the gear shaft is rotatably installed on the bottom of the housing. A winding wheel is installed near the lower section of the bottom of the housing, and a deflector pulley is provided on the side of the winding wheel. A traction rope is wound on the winding wheel, and the traction rope passes around the lower surface of the deflector pulley and is fixedly bolted to the lower end of the drive assembly.

[0010] Preferably, the drive assembly includes a drive shaft, with the drive shaft rotatably mounted at both ends of the rectangular through slot. A hinge plate is fixedly connected to the middle of the drive shaft. A second gear is fixedly mounted on the drive shaft near both ends. A rectangular rack meshes with the side of the second gear. The rectangular rack slides with the top of the housing, and the lower end of the rectangular rack extends into the housing and is fixedly connected to a connecting plate. Return springs are evenly installed from front to back between the upper end of the connecting plate and the top of the housing.

[0011] Preferably, the air intake assembly includes an air duct, with the air duct fixedly installed on the left and right outer side walls of the housing, and a piston block slidably installed inside the air duct, with a vertical rod fixedly connected to the upper end of the piston block.

[0012] Preferably, the upper end of the vertical rod extends above the air duct and is fixedly connected to the lower end of the Y-shaped bracket, which is fixedly connected to the side wall of the rectangular rack.

[0013] Preferably, air inlet slots are symmetrically provided on the left and right side walls near the lower end of the housing. A baffle plate is installed obliquely on the outside of the air inlet slot, and side plates are symmetrically installed on the inside of the air inlet slot. A spiral bend is fixedly installed between the side plates.

[0014] The beneficial effects of the present invention are as follows: By setting a heat dissipation box on the outside of the test box, the present invention can provide a continuous flow of cold air while dissipating heat, effectively improving the efficiency of heat exchange between the heat-generating elements inside the box and the outside, thereby ensuring the smooth operation of the test box. At the same time, the box can also play a certain protective role, improving the stability of the test box during operation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the present invention. Figure 1 A three-dimensional structural diagram after removing the front sidewall of the box; Figure 3 This is a three-dimensional structural diagram of the blower assembly in this invention; Figure 4 This is a cross-sectional three-dimensional structural diagram of the housing, drive assembly, rectangular through slot, perforated heat dissipation plate, arc-shaped air guide plate, air guide slot, dust filter and air intake assembly in this invention.

[0017] In the picture: 1. Box body; 2. Heat dissipation device; 21. Blower assembly; 211. Blower motor; 212. Pulley No. 1; 213. Pulley No. 2; 214. Belt; 215. Pulley shaft; 216. Blower blade assembly; 217. Incomplete gear; 218. Gear No. 1; 219. Gear shaft; 2110. Rewinding sheave; 2111. Idling pulley; 2112. Traction rope; 22. Drive assembly; 221. Fixed plate; 222. Return spring; 223. Rectangular rack; 224. Gear No. 2; 225. Drive shaft; 226. Opening / closing plate; 23. Rectangular channel; 24. Perforated heat sink; 25. Arc-shaped air guide plate; 26. Air guide channel; 27. Dust filter; 28. Air inlet assembly; 281. Y-shaped bracket; 282. Air duct; 283. Vertical rod; 284. Piston block; 285. Air inlet channel; 286. Baffle plate; 287. Side plate; 288. Spiral bend; 3. Multi-hole support platform; 4. Test box; 41. Data storage unit; 5. Interference monitoring module; 51. Radio frequency probe. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] See Figures 1 to 4 A compact field testing system based on OTA millimeter wave includes a housing 1, with a heat dissipation device 2 inside the housing 1. A perforated support platform 3 is fixedly installed in the middle of the inner side of the housing 1. A test box 4 is installed on the upper end of the perforated support platform 3. The test box 4 has a built-in millimeter wave signal processing module and a data storage unit 41. An interference monitoring module 5 is fixedly installed on the right side wall of the housing 1 by a bracket. The radio frequency probe 51 of the interference monitoring module 5 faces the inside of the housing 1 and is used to collect electromagnetic signals of the test environment.

[0020] When the interference monitoring module 5 is working, the radio frequency probe 51 collects the electromagnetic signals inside the enclosure 1 in real time and transmits the signal strength data to the internal processing unit for comparison with the preset test frequency band ±50MHz threshold: when the interference signal strength is ≤-85dBm, the system operates normally; when the interference signal strength is >-85dBm, the interference monitoring module 5 sends a warning command to the test box 4, the test box suspends the current test process, and the warning indicator light on the outside of the enclosure is lit. After the staff eliminates the interference, the test can be restarted by pressing the restore button on the test box; the data storage unit 41 adopts an SSD dual-disk backup design, automatically saving the test data every 5 seconds. When the system is unexpectedly powered off or interrupted, the most recently saved dataset can be retrieved through the touch screen of the test box after restarting, restoring the test parameters and progress before the interruption.

[0021] The heat dissipation device 2 includes a blower assembly 21, a drive assembly 22, a rectangular channel 23, a perforated heat sink 24, an arc-shaped air guide plate 25, an air guide channel 26, a dust filter 27, and an air inlet assembly 28. A rectangular channel 23 is provided in the middle of the upper part of the housing 1. A perforated heat sink 24 is installed inside the rectangular channel 23. The air outlet holes on the perforated heat sink 24 have an inner diameter that is smaller at the top and larger at the bottom. The drive assembly 22 is symmetrically installed at both ends of the rectangular channel 23. A blower assembly is installed at the bottom of the housing 1. The upper end of the blower assembly 21 is fixedly connected to the lower end of the drive assembly 22. The end of the drive assembly 22 is fixedly connected to the air inlet assembly 28. The air inlet assembly 28 is fixedly installed on the outer wall of the housing 1. The left and right side walls of the housing 1 are symmetrically provided with air guide slots 26 near the upper end. A dust filter 27 is installed in the air guide slot 26. An arc-shaped air guide plate 25 is fixedly connected to the upper end of the air guide slot 26. The upper end of the arc-shaped air guide plate 25 is fixedly connected to the lower end of the rectangular slot 23.

[0022] The blower assembly 21 includes a blower motor 211, a first pulley 212, a second pulley 213, an annular belt 214, a pulley shaft 215, a blower blade assembly 216, an incomplete gear 217, a first gear 218, a gear shaft 219, a winding reel 2110, a redirecting pulley 2111, and a traction rope 2112. The blower motor 211 is fixedly installed at the bottom of the housing 1. The first pulley 212 is fixedly installed at the upper end of the blower motor 211. Second pulleys 213 are symmetrically arranged on both sides of the first pulley 212. The second pulleys 213 and the first pulley 212 are connected by an annular belt 214. The second pulleys 213 are mounted on the pulley shaft 215, and the lower end of the pulley shaft 215 is rotatably mounted at the bottom of the housing 1. A blower blade assembly 216 is fixedly connected to the upper end of shaft 215. The upper end of the blower blade assembly 216 is fixedly connected to the lower end of the porous support platform 3. An incomplete gear 217 is provided on the pulley shaft 215 above the second pulley 213. A first gear 218 is meshed on the side of the incomplete gear 217. The first gear 218 is fixedly installed on the upper end of the gear shaft 219. The lower end of the gear shaft 219 is rotatably installed on the bottom of the housing 1. A winding wheel 2110 is installed near the lower section of the bottom of the housing 1. A redirecting pulley 2111 is provided on the side of the winding wheel 2110. A traction rope 2112 is wound on the winding wheel 2110. The traction rope 2112 passes around the lower surface of the redirecting pulley 2111 and is fixedly bolted to the lower end of the drive assembly 22.

[0023] The drive assembly 22 includes a fixed plate 221, a return spring 222, a rectangular rack 223, a second gear 224, a drive shaft 225, and a hinge plate 226. The drive shaft 225 is rotatably mounted on both the left and right ends inside the rectangular through slot 23. The hinge plate 226 is fixedly connected to the middle of the drive shaft 225. The second gear 224 is fixedly mounted on the drive shaft 225 near the front and rear ends. The rectangular rack 223 is meshed on the side of the second gear 224. The rectangular rack 223 slides with the top of the housing 1, and the lower end of the rectangular rack 223 extends into the housing 1 and is fixedly connected to the fixed plate 221. The return spring 222 is evenly installed from front to back between the upper end of the fixed plate 221 and the top of the housing 1.

[0024] The air intake assembly 28 includes a Y-shaped bracket 281, a duct 282, a vertical rod 283, a piston block 284, an air intake channel 285, a baffle plate 286, a side plate 287, and a spiral bend 288. The duct 282 is fixedly installed on the left and right outer side walls of the housing 1. The piston block 284 is slidably installed inside the duct 282. The vertical rod 283 is fixedly connected to the upper end of the piston block 284. The upper end of the vertical rod 283 extends above the duct 282 and is fixedly connected to the lower end of the Y-shaped bracket 281. The Y-shaped bracket 281 is fixedly connected to the side wall of the rectangular rack 223. The air intake channels 285 are symmetrically opened on the left and right side walls of the housing 1 near the lower end. The baffle plate 286 is installed obliquely on the outer side of the air intake channel 285. The side plates 287 are symmetrically installed front and back on the inner side of the air intake channel 285. The spiral bend 288 is fixedly installed between the side plates 287.

[0025] It should be noted that a torsion spring is provided between the gear shaft 219 and the winding wheel 2110, a one-way air inlet valve pipe is provided on the side wall of the air duct 282, and a one-way air outlet valve pipe is provided at the lower end of the air duct 282.

[0026] In specific operation, if the test box 4 is found to be running slowly or unstable due to increased internal heat generation during the use of the OTA millimeter wave-based compact field test system, the blower motor 211 is started. The blower motor 211 drives the first pulley 212 to rotate. Under the action of the annular belt 214, the second pulley 213 and the pulley shaft 215 will also rotate, thereby driving the fan blades in the blower blade assembly 216 to rotate and generate an upward airflow. This airflow can perform air blowing heat dissipation treatment on the test box 4, thereby removing the heat generated inside it. As the pulley shaft 215 rotates, it also drives the incomplete gear 217 to rotate. The incomplete gear 217 intermittently meshes with the first gear 218, thereby causing the first gear 218 and gear shaft 219 to rotate intermittently. When the gear shaft 219 rotates, it drives the winding wheel 2110 to rotate. At this time, the traction rope 2112 is wound up, and the traction rope 2112 pulls down the fixed plate 221, thereby stretching the return spring 222. Through the fixed plate 221, the rectangular rack 223 moves downward, thereby driving the second gear 224 and drive shaft 225 to rotate. At this time, the opening and closing plates 226 on the left and right sides open upward, and the rectangular through slot 23 is in the open state. The hot airflow from bottom to top inside the housing 1 can be discharged to the outside through the porous heat dissipation plate 24. When the teeth of the incomplete gear 217 disengage from the teeth of the first gear 218, the reaction force of the return spring 222 will drive the fixed plate 221 and the rectangular rack 223 to move upward. At this time, the opening and closing plates 226 on the left and right sides close downward. At this time, the rectangular through slot 23 is in a closed state. The hot airflow from bottom to top inside the housing 1 will be discharged to the outside through the air guide slot 26 and the dust filter 27 under the action of the arc-shaped air guide plate 25. During the test, the interference monitoring module monitors the electromagnetic environment in real time, and the data temporary storage unit automatically backs up the test data to ensure the stability of the test process and the security of the data. When the rectangular rack 223 moves downward, it drives the Y-shaped bracket 281, the vertical rod 283, and the piston block 284 to move downward. At this time, the air inside the air duct 282 will be discharged through its lower air outlet and enter the housing 1 through the air inlet slot 285 under the action of the baffle plate 286. The spiral bend 288 can be filled with coolant. When the air passes through the spiral bend 288, it can play a certain cooling role, so that the air entering the housing 1 is the air with a lower temperature, thereby improving the subsequent heat dissipation effect. When the rectangular rack 223 moves upward, it drives the Y-shaped bracket 281 to move upward. At this time, the vertical rod 283 and the piston block 284 will also move upward. At this time, the outside air will enter the air duct 282 through the air inlet of the air duct 282, thereby replenishing the air inside.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact field testing system based on OTA millimeter wave, characterized in that, include: Box (1); Heat dissipation device (2), the box (1) is equipped with heat dissipation device (2); A porous support platform (3) is fixedly installed in the middle of the inner side of the box (1); Test box (4), the test box (4) is installed on the upper end of the porous support platform (3), and the test box (4) has a built-in millimeter wave signal processing module and a data temporary storage unit (41). The heat dissipation device (2) includes a rectangular through slot (23). A rectangular through slot (23) is provided in the middle of the upper end of the box (1). A perforated heat dissipation plate (24) is installed inside the rectangular through slot (23). A drive assembly (22) is symmetrically installed at the left and right ends of the rectangular through slot (23). A blower assembly (21) is installed at the bottom of the box (1). The upper end of the blower assembly (21) is fixedly connected to the lower end of the drive assembly (22). An air intake assembly (28) is fixedly connected to the end of the drive assembly (22). The air intake assembly (28) is fixedly installed on the outer wall of the box (1). Interference monitoring module (5) is fixedly installed on the right side wall of the enclosure (1) by a bracket. The radio frequency probe (51) of the interference monitoring module (5) faces the inside of the enclosure (1) and is used to collect electromagnetic signals of the test environment.

2. The compression field testing system according to claim 1, characterized in that: The left and right side walls of the box (1) are symmetrically provided with air guide slots (26) near the upper end. A dust filter net (27) is installed in the air guide slot (26). An arc-shaped air guide plate (25) is fixedly connected to the upper end of the air guide slot (26). The upper end of the arc-shaped air guide plate (25) is fixedly connected to the lower end of the rectangular channel (23).

3. The compression field testing system according to claim 2, characterized in that: The air outlet holes on the porous heat sink (24) have an inner diameter that is smaller at the top and larger at the bottom.

4. The compression field testing system according to claim 2, characterized in that: The blower assembly (21) includes a blower motor (211). The blower motor (211) is fixedly installed at the bottom of the housing (1). A first pulley (212) is fixedly installed at the upper end of the blower motor (211). A second pulley (213) is symmetrically arranged on both sides of the first pulley (212). The second pulley (213) and the first pulley (212) are connected by an annular belt (214). The second pulley (213) is set on the pulley shaft (215). The lower end of the pulley shaft (215) is rotatably installed at the bottom of the housing (1). A blower blade assembly (216) is fixedly connected to the upper end of the pulley shaft (215). The upper end of the blower blade assembly (216) is fixedly connected to the lower end of the porous support platform (3).

5. The compression field testing system according to claim 4, characterized in that: An incomplete gear (217) is provided on the pulley shaft (215) above the second pulley (213). The incomplete gear (217) meshes with a first gear (218) on its side. The first gear (218) is fixedly installed on the upper end of the gear shaft (219). The lower end of the gear shaft (219) is rotatably installed on the bottom of the housing (1). A winding wheel (2110) is installed near the lower section of the bottom of the housing (1). A diversion pulley (2111) is provided on the side of the winding wheel (2110). A traction rope (2112) is wound on the winding wheel (2110). The traction rope (2112) passes around the lower surface of the diversion pulley (2111) and is fixedly bolted to the lower end of the drive assembly (22).

6. The compression field testing system according to claim 2, characterized in that: The drive assembly (22) includes a drive shaft (225). The drive shaft (225) is rotatably installed at both ends of the rectangular through groove (23). A hinge plate (226) is fixedly connected to the middle of the drive shaft (225). A second gear (224) is fixedly installed on the drive shaft (225) near the front and rear ends. A rectangular rack (223) meshes with the side of the second gear (224). The rectangular rack (223) slides with the top of the housing (1) and the lower end of the rectangular rack (223) extends into the housing (1) and is fixedly connected to a connecting plate (221). A return spring (222) is evenly installed between the upper end of the connecting plate (221) and the top of the housing (1) from front to back.

7. The compression field testing system according to claim 2, characterized in that: The air intake assembly (28) includes a duct (282). The duct (282) is fixedly installed on the left and right outer walls of the housing (1). A piston block (284) is slidably installed inside the duct (282). A vertical rod (283) is fixedly connected to the upper end of the piston block (284).

8. The compression field testing system according to claim 7, characterized in that: The upper end of the vertical rod (283) extends above the air duct (282) and is fixedly connected to the lower end of the Y-shaped bracket (281), which is fixedly connected to the side wall of the rectangular rack (223).

9. The compression field testing system according to claim 8, characterized in that: The left and right side walls of the box (1) are symmetrically provided with air inlet slots (285) near the lower end. A baffle plate (286) is installed obliquely on the outside of the air inlet slot (285). Side plates (287) are symmetrically installed on the inside of the air inlet slot (285). A spiral bend (288) is fixedly installed between the side plates (287).

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