A test apparatus for performance evaluation of a wireless communication device

Abstract

The application discloses a kind of test devices for wireless communication equipment performance evaluation, the present application relates to communication equipment performance evaluation technical field, including support leg, detection mechanism, adjusting mechanism and control module;The detection mechanism includes bottom cylinder, top plate and middle cylinder, the bottom cylinder, middle cylinder and top plate form detection bin, the first motor is provided on the outside of bottom cylinder, the first motor is engaged with the gear and the gear slot outside the middle cylinder, to drive the rotation of middle cylinder and adjust the angle of receiving end relative to transmitting end;The adjusting mechanism includes annular slide rail, ring frame, second motor, rack and shielding mechanism, the shielding mechanism is arranged on the upper end of rack, and can move along the annular track of different radius under the driving of second motor, the present application can simulate the wireless propagation environment of different positions, different angles and different shielding intensity, improve the accuracy and comprehensiveness of wireless communication equipment performance evaluation.

Description

Technical Field

[0001] This invention relates to the field of communication equipment performance evaluation technology, specifically to a testing device for evaluating the performance of wireless communication equipment. Background Technology

[0002] With the rapid development of wireless communication technology, wireless communication equipment has been widely used in mobile communication, Internet of Things, smart terminals and industrial control. In actual operation, the communication performance of wireless communication equipment is easily affected by factors such as changes in equipment posture, obstruction by surrounding obstacles, electromagnetic interference, and changes in the propagation environment. Therefore, it is necessary to use testing equipment to evaluate the signal transmission capability and environmental adaptability of wireless communication equipment. Existing wireless communication equipment performance testing devices typically operate in a fixed test environment, transmitting wireless signals from the transmitter to the receiver and collecting parameters such as signal strength, bit error rate, and throughput to complete performance testing. However, the positions of the transmitter and receiver in existing testing devices are usually fixed, and the test environment is difficult to dynamically adjust according to actual application scenarios, making it impossible to effectively simulate the communication status of wireless devices in different directions, different obstruction locations, and complex propagation environments. Meanwhile, although some existing test equipment can reduce external interference by using shielding structures, the shielding state is usually fixed and cannot change the signal attenuation level according to test requirements. It also cannot simulate the instantaneous occlusion, rapid signal attenuation and recovery process caused by the movement of obstacles in the actual environment, resulting in some differences between the test results and the actual use environment of wireless communication equipment. Therefore, there is an urgent need for a testing device that can adjust the wireless signal propagation path, receiver angle, obstruction position, and shielding strength, and can simulate dynamic wireless propagation environments, in order to improve the accuracy and comprehensiveness of wireless communication equipment performance evaluation. Summary of the Invention

[0003] The purpose of this invention is to provide a testing apparatus for evaluating the performance of wireless communication devices, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a test device for performance evaluation of wireless communication equipment, comprising a support leg, a detection mechanism, an adjustment mechanism, and a control module; The detection mechanism is located at the upper end of the support leg. The detection mechanism includes a bottom cylinder, a top plate, and a middle cylinder. The bottom cylinder, the middle cylinder, and the top plate together form a detection chamber. The inner wall of the detection chamber is attached with a wave-absorbing plate to reduce the influence of electromagnetic signal reflection inside the detection chamber on the test results. A second fixing frame is provided in the middle of the bottom cylinder, which is used to install the transmitter of the wireless communication device. A first fixing frame is provided on the inner side wall of the middle cylinder, which is used to install the receiver of the wireless communication device. A first motor is provided on the outer side of the bottom cylinder, and a toothed groove is provided on the outer side of the middle cylinder. A gear is provided at the output end of the first motor. The gear passes through the transmission window provided in the bottom cylinder and meshes with the toothed groove. The first motor is used to drive the middle cylinder to rotate relative to the bottom cylinder and the top plate, so that the receiver installed on the first fixed frame changes the angular position relative to the transmitter.

[0005] According to the above technical solution, the adjustment mechanism is located below the detection mechanism, and the adjustment mechanism includes a base frame, a first connecting plate, an annular slide rail, an annular frame, a second connecting plate, a second motor, a rack and pinion, and a shielding mechanism. The upper end of the base frame is fixedly connected to a first connecting plate. The first connecting plate is provided with three annular slide rails of different diameters. The three annular slide rails are connected to the annular frame through connecting buckles. The annular frames are connected to each other through a second connecting plate, so that the three annular slide rails form an inner, middle and outer three-layer concentric structure. Each of the three annular slide rails is equipped with a rack. The output end of the second motor meshes with the rack through a gear to drive the rack to move along the corresponding annular slide rail. A shielding mechanism is provided at the upper end of the rack. The shielding mechanism can enter or leave the detection chamber as the rack moves, thereby changing the wireless signal propagation path between the transmitter and receiver.

[0006] According to the above technical solution, the bottom of the detection chamber has multiple vertically penetrating openings, and the shielding mechanism can extend into the interior of the detection chamber through the openings. The multiple shielding mechanisms are respectively arranged on the inner, middle and outer ring tracks to form wireless signal blocking environments at different positions and distances.

[0007] According to the above technical solution, the shielding mechanism includes a base plate, a first shielding plate, a second shielding plate, and an adjustment assembly; The first shielding plate is fixedly mounted on the base plate, and the second shielding plate is movably mounted on the base plate. Both the first and second shielding plates are provided with a plurality of openings. The adjustment assembly includes a limiting plate and an electric telescopic rod. The second shielding plate is connected to the electric telescopic rod through the limiting plate. The electric telescopic rod is used to push the second shielding plate to move relative to the first shielding plate, so that the openings on the first shielding plate and the second shielding plate overlap or misalign to different degrees, thereby changing the attenuation degree of the wireless signal by the shielding mechanism.

[0008] According to the above technical solution, the adjustment mechanism further includes an on / off mechanism, which includes a third motor, a threaded rod, a top ring, a top rod, and a limiting rod; The third motor is fixedly installed below the base frame. The output end of the third motor is connected to the threaded rod. The top ring is sleeved on the outside of the threaded rod and threadedly engaged with the threaded rod. The limiting rod is slidably engaged with the top ring to limit the rotation of the top ring and allow the top ring to move axially along the threaded rod. The top ring is provided with multiple push rods at its upper end, and the push rods are correspondingly arranged at the lower end of the rack. The top ring moves up and down, driving the push rods to push the rack and the shielding mechanism up and down, so that the shielding mechanism can quickly enter or exit the testing chamber.

[0009] According to the above technical solution, the switching mechanism includes three sets of third motors and three top rings of different diameters. The three top rings correspond to the inner, middle and outer shielding mechanisms, respectively. By controlling the operation of different third motors, any shielding mechanism can be raised and lowered individually, or the three shielding mechanisms can be raised and lowered synchronously.

[0010] Furthermore, the control module is connected to the first motor, the second motor, the third motor, the electric telescopic rod, and the wireless communication detection unit, respectively, and is used to control the actions of the detection mechanism, the adjustment mechanism, and the shielding mechanism, and to collect performance parameters such as RSSI signal strength, SNR signal-to-noise ratio, packet loss rate, delay, throughput, and bit error rate during the wireless communication equipment testing process.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention, by setting up a testing chamber composed of a bottom cylinder, a top plate, and a middle cylinder, and by setting up a wave-absorbing plate on the inner wall of the testing chamber, can reduce the influence of the external environment and internal reflected signals on the wireless communication testing process, making the testing environment more stable and improving the accuracy of the performance testing results of wireless communication equipment.

[0012] 2. By setting an adjustment mechanism, the shielding mechanism can move along a circular trajectory of different diameters. At the same time, the first motor drives the middle cylinder to rotate, so that the receiving end can be adjusted at multiple angles relative to the transmitting end. This enables wireless communication performance testing under different positions and directions, and improves the device's ability to simulate complex communication environments.

[0013] 3. This invention, by setting up an on / off mechanism, uses a third motor, a threaded rod, and a top ring structure to control the rapid lifting and lowering of the shielding mechanism, enabling the shielding mechanism to quickly enter or exit the detection chamber, simulating the instantaneous blocking and recovery process of wireless signals, thereby realizing the detection of the dynamic response capability of wireless communication equipment.

[0014] 4. This invention provides a shielding mechanism consisting of a first shielding plate, a second shielding plate, and an adjustment component. By adjusting the positional relationship between the two shielding plates to change the degree of overlap of the openings, the shielding strength can be continuously adjusted. Furthermore, it can be combined with position adjustment and lifting adjustment to form various wireless propagation environments, thereby improving the comprehensiveness and applicability of wireless communication equipment performance evaluation. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the lower structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the present invention; Figure 5 This is a schematic diagram of the bottom cylinder structure of the present invention; Figure 6 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 7 This is a schematic diagram of the on / off mechanism of the present invention; Figure 8 This is a schematic diagram of the shielding mechanism structure of the present invention; In the diagram: 1. Support leg; 2. Detection mechanism; 3. Adjustment mechanism; 201. Bottom cylinder; 202. Top plate; 203. Middle cylinder; 204. Insert rod; 205. Wave-absorbing plate; 206. First fixing frame; 207. Second fixing frame; 208. Gear groove; 209. First motor; 301. Base frame; 302. First connecting plate; 303. Circular slide rail; 304. Connecting buckle; 305. Circular frame; 306. Second connecting plate; 307. Second motor; 308. Rack; 309. Shielding mechanism; 310. Switching mechanism; 901. Bottom plate; 902. First shielding plate; 903. Second shielding plate; 904. Limiting plate; 905. Electric telescopic rod; 101. Third motor; 102. Threaded rod; 103. Top ring; 104. Top rod; 105. Limiting rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-5 The present invention provides a technical solution: a test device for evaluating the performance of wireless communication devices, comprising a support leg 1 and a control module; The outrigger 1 is equipped with a detection mechanism 2 and an adjustment mechanism 3 respectively; The testing mechanism 2 includes a testing chamber composed of a bottom cylinder 201, a top plate 202 and a middle cylinder 203, and an insertion rod 204. The inner walls of the testing chamber are all attached with wave-absorbing plates 205. A second fixing frame 207 is provided in the middle of the bottom cylinder 201 for installing the transmitter, and a first fixing frame 206 is provided on the inner side wall of the middle cylinder 203 for installing the receiver. Used to test the communication performance of wireless communication devices in a relatively stable and controllable environment; Before the test begins, the corresponding transmitter and receiver are selected according to the communication type of the wireless communication device under test, and the test device is initialized. The operator installs the transmitter on the second fixed frame 207 in the test mechanism 2 and the receiver on the first fixed frame 206, so that the transmitter and receiver are located in the preset positions inside the test chamber. The detection mechanism 2 consists of a bottom cylinder 201, a top plate 202, and a middle cylinder 203, forming a detection chamber. The bottom cylinder 201 is fixedly installed on the upper end of the support leg 1, and an installation space is formed inside the bottom cylinder 201. The lower end of the middle cylinder 203 is inserted into the bottom cylinder 201, and the outer wall of the middle cylinder 203 is in contact with the inner wall of the bottom cylinder 201, allowing the middle cylinder 203 to rotate inside the bottom cylinder 201. The upper end of the middle cylinder 203 is rotatably connected to the top plate 202 through a bearing, so that the top plate 202 can close the upper end of the detection chamber, while ensuring that the middle cylinder 203 has independent rotation capability. A rod 204 is provided on the outer side of the top plate 202, which is inserted into the protruding part on the outer side of the bottom cylinder 201 to limit the relative position between the top plate 202 and the bottom cylinder 201, thereby improving the overall structural stability of the detection chamber. After the transmitter and receiver are installed, the top plate 202 is connected to the bottom cylinder 201 to form a relatively enclosed space in the test chamber. The inner walls of the test chamber are all covered with absorbing plates 205. The absorbing plates 205 are used to absorb the reflected electromagnetic waves generated inside the test chamber, reduce the impact of multipath propagation formed by the wireless signal after reflection through the inner wall of the chamber on the test results, and make the test environment closer to the preset test conditions. Subsequently, the control module starts the detection program, causing the transmitter to send wireless communication signals to the receiver. At the same time, the control module obtains wireless communication performance parameters through the data acquisition interface connected to the receiver. The acquired parameters include, but are not limited to, RSSI signal strength, SNR signal-to-noise ratio, packet loss rate, communication delay, throughput, and bit error rate. During basic performance testing, the jammer can be installed at any location inside the testing chamber. The jammer generates a preset frequency and preset strength interference signal to create an electromagnetic interference environment of different degrees between the transmitter and receiver. For example, the jammer can be placed between the transmitter and receiver to directly interfere with the wireless signal propagation path; or the jammer can be placed on the side wall of the testing chamber to affect the wireless signal propagation through reflection. During the test, the control module synchronously records the communication status of the receiver under different interference conditions, and stores and analyzes the collected data to obtain the performance changes of the wireless communication device in different electromagnetic environments. After the test is completed, the operator opens the testing chamber, disassembles or replaces the device under test with other models, and resets the positions of the transmitter, receiver and jammer according to the new testing requirements, and repeats the above testing process. This embodiment utilizes a closed testing chamber and an absorbing structure to reduce the influence of the external environment. At the same time, it combines an jammer to simulate different electromagnetic environments, making the performance testing process of wireless communication equipment highly repeatable and accurate, thus avoiding the problem of test result deviation caused by the uncontrollable testing environment in existing testing methods.

[0018] Example 2: Please refer to Figure 1-7 Based on Embodiment 1, the present invention provides a technical solution: a first motor 209 is provided on the outer side of the bottom cylinder 201, and a toothed groove 208 is provided on the outer side of the middle cylinder 203. The output end of the first motor 209 meshes with the toothed groove 208 through a gear to drive the middle cylinder 203 to rotate and adjust the angle between the receiving end and the transmitting end. Used for performance testing of wireless communication devices in multi-angle, multi-location, and multi-path environments, and to simulate the changes in communication performance caused by changes in device orientation and obstruction position during actual use of wireless devices; Before the test begins, the transmitter is first fixed to the second mounting bracket 207, the receiver is fixed to the first mounting bracket 206, and the number and movement path of the shielding mechanisms 309 to be tested are selected according to the test plan. The adjustment mechanism 3 includes a base frame 301, a first connecting plate 302, an annular slide rail 303, a connecting buckle 304, an annular frame 305, a second connecting plate 306, a second motor 307, a rack 308, and a shielding mechanism 309. The base frame 301 is fixedly installed on the ground. The upper end of the base frame 301 is fixedly connected to the first connecting plate 302. The first connecting plate 302 is provided with three annular slide rails 303. The annular slide rails 303 are connected to the annular frame 305 through the connecting buckle 304 and form an integral support structure through the second connecting plate 306, so that the three annular slide rails 303 are concentrically arranged. During the test, according to the required simulated blocking direction, the control module starts the linear motor between the second motor 307 and the annular slide rail 303, and sends the second motor 307 to the preset position. The output end of the second motor 307 meshes with the rack 308 through the gear structure, so that the rack 308 moves along the slide groove on the annular frame 305. Since the shielding mechanism 309 is installed on the upper end of the rack 308, the second motor 307 can drive the shielding mechanism 309 to move in the corresponding up and down direction when it is working. Since the three annular slide rails 303 have different diameters, the three shielding mechanisms 309 correspond to different radius positions. When it is necessary to simulate a close-range shielding environment, the inner shielding mechanism 309 is controlled to move; when it is necessary to simulate a long-range shielding environment, the outer shielding mechanism 309 is controlled to move; when it is necessary to form a complex spatial shielding environment, the movement of the three shielding mechanisms 309 can be controlled simultaneously, so that multiple shielding areas exist at the same time. When the shielding mechanism 309 moves to the preset position, the control module starts the first motor 209. The first motor 209 is fixedly installed on the outside of the bottom cylinder 201, and its output end is equipped with a gear. The gear meshes with the tooth groove 208 provided on the outer wall of the middle cylinder 203 through the transmission window on the bottom cylinder 201. When the first motor 209 rotates, it drives the middle cylinder 203 to rotate around the central axis, thereby driving the first fixed frame 206 installed on the side wall of the middle cylinder 203 to rotate synchronously, so that the receiving end changes the direction angle relative to the fixed transmitting end. By controlling the rotation angle of the middle cylinder 203 and the spatial position of the shielding mechanism 309, different propagation path combinations can be formed. For example, by keeping the transmitter fixed, the receiver can be at different angles such as 0°, 45°, and 90°, while changing the position of the shielding mechanism 309, communication parameters under different angles and different obstruction conditions can be detected. After completing the multi-angle test, the control module compares and analyzes the RSSI, SNR, packet loss rate, delay and other data corresponding to different angles and different occlusion positions to form the spatial direction performance evaluation results of the wireless communication device. This embodiment can simulate situations such as device rotation, personnel movement and obstruction, and changes in obstacle position in real-world applications, thereby improving the testing device's ability to simulate real wireless propagation environments.

[0019] Example 3: Please refer to Figure 1-7 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: the shielding mechanism 309 is controlled by the switching mechanism 310 to quickly enter or exit the detection chamber, thereby simulating the instantaneous obstruction, rapid passage through obstacles and sudden signal attenuation encountered by wireless communication devices in actual applications. Before the test begins, the number of shielding mechanisms 309 that need to be activated is determined according to the test requirements. If it is necessary to simulate a weak shielding environment in a single area, any one of the inner, middle, or outer shielding mechanisms 309 can be selected for control. If it is necessary to simulate a large-scale sudden shielding environment, the three layers of shielding mechanisms 309 can be controlled to activate synchronously. The switching mechanism 310 is located below the adjustment mechanism 3 and includes a third motor 101, a threaded rod 102, a top ring 103, a top rod 104, and a limiting rod 105. Since the three shielding mechanisms 309 are respectively set with inner, middle, and outer three-layer concentric structures, the switching mechanism 310 is correspondingly equipped with three sets of third motors 101 and three top rings 103 with different diameters. The three top rings 103 correspond to the positions of the three layers of shielding mechanisms 309, so that each set of top rings 103 can independently control the lifting state of the corresponding layer of shielding mechanism 309. During the test, the control module starts the third motor 101 at the corresponding position according to the preset test program. The third motor 101 is fixedly installed below the base frame 301, and its output end is fixedly connected to the threaded rod 102. When the third motor 101 works, it drives the threaded rod 102 to rotate. Since the top ring 103 has a threaded hole that matches the threaded rod 102, the top ring 103 moves along the axial direction of the threaded rod 102 under the action of threaded transmission. Meanwhile, to prevent the top ring 103 from rotating and shifting during movement, a limiting rod 105 is provided on the base frame 301. The sliding hole on the top ring 103 is slidably engaged with the limiting rod 105, so that the top ring 103 can only move in the vertical direction. When the top ring 103 moves upward, multiple top rods 104 fixedly installed on the upper end of the top ring 103 move upward synchronously and contact the lower end of the rack 308 at the corresponding position. Since the upper end of the top rod 104 is correspondingly set to the lower end of the rack 308, when the top rod 104 continues to rise, it pushes the rack 308 and the shielding mechanism 309 installed on the rack 308 to move upward as a whole, so that the shielding mechanism 309 enters the detection chamber and is located on the wireless propagation path between the transmitter and the receiver. When the shielding mechanism 309 enters the testing chamber, the wireless propagation environment between the transmitter and receiver immediately changes. The control module synchronously collects the changes in the communication parameters of the receiver, including: the magnitude of signal strength decrease, the change in signal-to-noise ratio, the number of data packets lost, the delay increase time, and the communication recovery time. Subsequently, the control module controls the third motor 101 to rotate in the opposite direction, causing the threaded rod 102 to drive the top ring 103 to descend, and the top rod 104 to descend accordingly and release the support of the rack 308, so that the shielding mechanism 309 descends quickly and leaves the interior of the detection chamber. The moment the shielding mechanism 309 exits the detection chamber, the wireless propagation path is restored, and the control module continues to collect changes in communication parameters during the recovery process at the receiving end, such as: signal recovery speed, data retransmission time, network connection recovery time, and bit error rate recovery trend. By repeatedly entering detection and exiting recovery, the dynamic response capability of wireless communication devices in the face of sudden environmental changes can be obtained. Furthermore, this embodiment can also control three sets of third motors 101 to work in sequence, so that three top rings 103 of different diameters move up and down in sequence, thereby causing the inner, middle and outer shielding mechanisms 309 to enter and exit the detection chamber in sequence at short intervals, forming a multi-layer shielding environment. For example, it can simulate the continuous shielding situation when a vehicle passes through a building, a high-speed mobile device passes through an obstacle area, or a complex urban environment. After the test is completed, the control module establishes a transient environment adaptability evaluation model for wireless communication equipment based on the collected data, and judges the stability of the equipment in a rapidly changing signal environment. This embodiment, compared to traditional fixed obstruction testing methods, can proactively create instantaneous changes in the wireless propagation environment and detect the entire process from signal interference to communication recovery, thereby improving the comprehensiveness of wireless communication device performance evaluation.

[0020] Example 4: Please refer to Figure 1-8 Based on Embodiments 1, 2 and 3, the present invention provides a technical solution: the shielding mechanism 309 includes a first shielding plate 902 and a second shielding plate 903 and an adjustment component. The first shielding plate 902 and the second shielding plate 903 are respectively provided with openings. The adjustment component is used to control the on / off state of the openings on the first shielding plate 902 and the second shielding plate 903. The regulating mechanism 3 also includes an on / off mechanism 310, which is used to simultaneously control the lifting and lowering states of one of the shielding mechanisms 309. This is used to further optimize the shielding mechanism 309, so that the shielding mechanism 309 can not only change the propagation position of the wireless signal, but also actively adjust the degree of wireless signal transmission, thereby realizing wireless communication performance testing under different shielding levels. Before the test begins, the corresponding number of shielding mechanisms 309 are moved to the target position inside the test chamber according to the required simulated signal attenuation level. The shielding mechanism 309 includes a base plate 901, a first shielding plate 902, a second shielding plate 903, and an adjustment component. The base plate 901 is fixedly installed on the upper end of the rack 308 to support the first shielding plate 902 and the second shielding plate 903. The first shielding plate 902 is fixedly connected to one side of the upper surface of the base plate 901, and the second shielding plate 903 is disposed on the other side of the upper surface of the base plate 901. The first shielding plate 902 and the second shielding plate 903 are attached to each other so that they can form a superimposed shielding structure. The first shielding plate 902 and the second shielding plate 903 are respectively provided with multiple corresponding openings. When the relative position of the two shielding plates changes, the overlap state of the openings on the two shielding plates changes accordingly, thereby changing the effective area through which the wireless signal can pass. The adjustment assembly includes a limiting plate 904 and an electric telescopic rod 905. The lower end of the second shielding plate 903 is fixedly connected to the limiting plate 904. The limiting plate 904 passes downward through the bottom plate 901 and is connected to the electric telescopic rod 905. The electric telescopic rod 905 is fixedly set below the bottom plate 901 and is used to push the limiting plate 904 to move, thereby causing the second shielding plate 903 to move up and down relative to the first shielding plate 902. During the test, the control module controlled the extension and retraction of the electric telescopic pole 905 according to the preset shielding level; When a stronger shielding effect is required: control the electric telescopic rod 905 to push the second shielding plate 903 to move, so that the openings on the first shielding plate 902 and the second shielding plate 903 are misaligned. At this time, a continuous metal shielding area is formed between the two shielding plates, the wireless signal passes through a reduced area, and the signal attenuation increases. When a weaker shielding effect is required: control the electric telescopic rod 905 to move in the opposite direction, so that the openings on the two shielding plates gradually overlap, increasing the area through which the wireless signal can pass and reducing the signal attenuation. When a continuously changing shielding environment is required, the control module can control the electric telescopic rod 905 to move at a preset speed, so that the second shielding plate 903 moves slowly relative to the first shielding plate 902, thereby forming a signal attenuation process that gradually strengthens or weakens. Meanwhile, this embodiment can be combined with the rotation adjustment function in embodiment two. For example, while the angle is adjusted by the first motor 209 at the receiving end, the shielding strength of the shielding mechanism 309 is adjusted by the electric telescopic rod 905, so that the wireless communication device can be tested under different directions and different shielding strengths. In addition, this embodiment can also be combined with the rapid lifting function in embodiment three, so that the shielding mechanism 309 changes its shielding strength after entering the detection chamber. For example, the shielding mechanism 309 is initially in a low shielding state when entering the detection chamber, and then rapidly increases its shielding strength after entering the designated position, thereby simulating the situation of sudden deterioration of the wireless environment. After the test, the control module comprehensively analyzes the data collected under different shielding strengths, different spatial locations, and different durations to obtain the adaptability of the wireless communication device to different signal attenuation levels. Through this embodiment, the shielding mechanism 309 can no longer only achieve fixed shielding, but can change the degree of shielding according to control commands, so that the test device can simulate the continuously changing wireless propagation environment and improve the performance evaluation range and test accuracy of wireless communication equipment.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing apparatus for performance evaluation of wireless communication devices, characterized in that: Includes outriggers (1) and a control module; The outrigger (1) is respectively provided with a detection mechanism (2) and an adjustment mechanism (3); The testing mechanism (2) includes a testing chamber composed of a bottom cylinder (201), a top plate (202) and a middle cylinder (203), and the inner walls of the testing chamber are all attached with wave-absorbing plates (205). A second fixing frame (207) is provided in the middle of the bottom cylinder (201) for installing the transmitter end, and a first fixing frame (206) is provided on the inner side wall of the middle cylinder (203) for installing the receiver end; A first motor (209) is provided on the outside of the bottom cylinder (201), and a toothed groove (208) is provided on the outside of the middle cylinder (203). The output end of the first motor (209) meshes with the toothed groove (208) through a gear to drive the middle cylinder (203) to rotate and adjust the angle between the receiving end and the transmitting end. The adjustment mechanism (3) includes a second motor (307) and several shielding mechanisms (309). The second motor (307) is used to control the lifting and lowering of the shielding mechanism (309). Several vertically penetrating openings are provided on the bottom cylinder (201). The shielding mechanism (309) lifts and lowers inside the openings. The shielding mechanism (309) is arranged in a ring and is configured with inner, middle and outer three layers. The shielding mechanism (309) includes a first shielding plate (902) and a second shielding plate (903) and an adjustment component. The first shielding plate (902) and the second shielding plate (903) are respectively provided with openings. The adjustment component is used to control the on / off state of the openings on the first shielding plate (902) and the second shielding plate (903). The adjustment mechanism (3) also includes a switching mechanism (310), which is used to simultaneously control the lifting and lowering state of one of the shielding mechanisms (309).

2. The testing apparatus for performance evaluation of wireless communication devices according to claim 1, characterized in that: The lower surface of the bottom cylinder (201) is fixedly connected to the upper end of the support leg (1). The inner wall of the bottom cylinder (201) is in contact with the outer wall of the middle cylinder (203). The lower side of the middle cylinder (203) is inserted into the bottom cylinder (201). The upper side of the middle cylinder (203) is rotated with the lower surface of the top plate (202) through a bearing. The outer wall of the top plate (202) extends to the outer side of the bottom cylinder (201) and is fixedly connected with a rod (204). The lower end of the rod (204) is inserted into the protruding part on the outer side of the bottom cylinder (201).

3. The testing apparatus for performance evaluation of wireless communication devices according to claim 2, characterized in that: The second fixing frame (207) is located in the middle of the absorbing plate (205), and the first fixing frame (206) is located on the side wall of the middle cylinder (203). The second fixing frame (207) and the first fixing frame (206) both extend through the absorbing plate (205) attached to the inner wall of the detection chamber and into the interior of the detection chamber. The height of the middle part of the first fixing frame (206) is the same as the height of the upper end of the second fixing frame (207).

4. The testing apparatus for performance evaluation of wireless communication devices according to claim 3, characterized in that: The outer wall of the first motor (209) is fixedly connected to the outer wall of the bottom cylinder (201). The bottom cylinder (201) is provided with a transmission window that runs through the inside and outside. The height of the tooth groove (208) is set to correspond to the height of the transmission window. The output end of the first motor (209) is provided with a gear, which meshes with the tooth groove (208) through the transmission window to drive the middle cylinder (203) to rotate.

5. A testing apparatus for performance evaluation of wireless communication devices according to claim 4, characterized in that: The adjustment mechanism (3) also includes a base frame (301), the upper end of which is fixedly connected to a first connecting plate (302), and three annular slide rails (303) are fixedly connected to the first connecting plate (302). The outermost annular slide rail (303) is fixedly connected to an annular frame (305) via a connecting buckle (304). There are three annular frames (305), and the three annular frames (305) are fixedly connected via a second connecting plate (306). The upper sides of the three annular slide rails (303) are slidably connected to a second motor (307). The annular frame (305) has several sliding grooves. The inner wall of the sliding groove is slidably engaged with the outer wall of the rack (308). The shielding mechanism (309) is located on the upper side of the rack (308). The output end of the second motor (307) is engaged with the outer wall of the rack (308) through gear transmission.

6. A testing apparatus for performance evaluation of wireless communication devices according to claim 5, characterized in that: The inner diameters of the three annular slide rails (303) and the three second connecting plates (306) decrease sequentially, and they are arranged in three layers: inner, middle and outer, corresponding to the three-ring shielding mechanism (309).

7. A testing apparatus for performance evaluation of wireless communication devices according to claim 6, characterized in that: The adjustment assembly includes a base plate (901), the lower surface of which is fixedly connected to the upper end of a rack (308). One side of the upper surface of the base plate (901) is fixedly connected to the lower side of a first shielding plate (902), and the other side is in contact with the lower side of a second shielding plate (903). A limiting plate (904) is fixedly connected to the lower end of the second shielding plate (903). The limiting plate (904) extends through the base plate (901) to the lower side of the base plate (901). An electric telescopic rod (905) is fixedly connected to the lower end of the limiting plate (904), and the upper end of the electric telescopic rod (905) is fixedly connected to the lower surface of the base plate (901).

8. A testing apparatus for performance evaluation of wireless communication devices according to claim 7, characterized in that: The outer wall of the first shielding plate (902) is in contact with the outer wall of the second shielding plate (903), and the outer walls of the first shielding plate (902) and the second shielding plate (903) are in contact with the inner wall of the lower opening of the bottom cylinder (201). The upper side of the first shielding plate (902) and the second shielding plate (903) penetrates the absorbing plate (205) and is flush with the inner wall of the detection cavity. The length of the rack (308) is greater than the height of the first shielding plate (902).

9. A testing apparatus for performance evaluation of wireless communication devices according to claim 8, characterized in that: The switching mechanism (310) includes a third motor (101), the lower end of which is fixedly connected to the lower side of the base frame (301). The output end of the third motor (101) is fixedly connected to a threaded rod (102). The switching mechanism (310) also includes a top ring (103), which is a ring-shaped mechanism. Several top rods (104) are fixedly connected to the upper side of the top ring (103). A threaded hole is opened on the outer wall of the top ring (103). The inner wall of the threaded hole is threadedly engaged with the outer wall of the threaded rod (102). Another sliding hole is opened on the top ring (103). A limit rod (105) is slidably engaged on the inner wall of the sliding hole. The lower end of the limit rod (105) is fixedly connected to the lower side of the base frame (301).

10. A testing apparatus for performance evaluation of wireless communication devices according to claim 9, characterized in that: The switching mechanism (310) includes three sets of third motors (101) and three top rings (103) of different diameters. The three top rings (103) are arranged in the inner, middle and outer layers, corresponding to the three-layer shielding mechanism (309). The upper end of the top rod (104) and the lower end of the rack (308) are both arranged accordingly.

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