Radiated electromagnetic testing system and method

Abstract

The present application relates to a radiation electromagnetic test system and method, belonging to the technical field of radiation electromagnetic test, the system includes a shielding control room, an anechoic chamber, a turntable, a high-frequency antenna tower, a low-frequency antenna tower, a switch control box, a receiver, a first driving component and a controller; the turntable is rotatably connected to the anechoic chamber, the high-frequency antenna tower and the low-frequency antenna tower are both installed in the anechoic chamber, and high-frequency wires and low-frequency wires are installed respectively, the switch control box is installed in the shielding control room, and is connected to the high-frequency antenna and the low-frequency antenna respectively, the receiver is installed in the shielding control room, and is connected to the switch control box, and the controller is installed in the shielding control room and is connected to the first driving component. Since the low-frequency antenna and the high-frequency antenna are installed in the anechoic chamber at the same time, both low-frequency electromagnetic and high-frequency electromagnetic can be tested, and there is no need to manually replace the antenna, thereby improving the applicability of electromagnetic testing.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic testing, and in particular to a radiation electromagnetic testing system and method. Background Art

[0002] At present, the test of radiated electromagnetic is gradually changing from outdoor test to indoor test, and the anechoic chamber comes into being.

[0003] The main components of the radio darkroom are and. The shielded room consists of a shielding shell, a shielding door, a ventilation waveguide window and various power filters. According to user requirements, the shielding shell can be welded or assembled. The absorbing material is composed of a single-layer ferrite sheet with an operating frequency range of 30MHz to 1000MHz and a conical carbon sponge absorbing material. The conical carbon sponge absorbing material is formed by infiltration in a carbon glue solution and has good flame retardant properties.

[0004] In the related technology, a patent with publication number CN207181536U and publication date 20180403 discloses a compatible antenna test chamber, including a shielding chamber, a shielding door and a turntable. The shielding chamber is composed of a main frame and a frame body. The inner walls of the frame body are provided with absorbing materials. A shielding door is provided on one side of the frame body. A conical dark chamber is provided at the bottom of the interior of the shielding chamber. Absorbing materials are also provided on the inner walls of the conical dark chamber. The inner part of the conical dark chamber is divided into a mirror area and a quiet area. A mounting hole is provided on one side of the mirror area, and a base is provided in the quiet area. A turntable is provided on the upper end of the base, and an output port for incoming and outgoing cables is provided on one side of the conical dark chamber. The frame body is made of ferrite absorbing material, which is suitable for low-frequency compatibility antenna testing and improves the accuracy of test results. A conical darkroom is set in the shielding room, and the shielding effect is better through double shielding effect. The mirror area of ​​the conical darkroom is close to the aperture of the source antenna, so the mirror reflection becomes part of the irradiation. The mirror area can be used to form a set of parallel rays incident into the quiet zone to generate irradiation, thereby completing the antenna test. It has good working performance and is suitable for low-frequency and high-impedance electromagnetic testing.

[0005] With respect to the above-mentioned related technologies, the inventors found the following defects: the related technologies can only test low-frequency electromagnetics but not high-frequency electromagnetics, so their applicability is low. Summary of the invention

[0006] In order to solve the above technical defects, the present application provides a radiation electromagnetic testing system and method, the purpose of which is to improve the applicability of electromagnetic testing.

[0007] In a first aspect, the present application provides a radiation electromagnetic testing system, which adopts the following technical solution:

[0008] A radiation electromagnetic testing system, comprising:

[0009] Shielded control room;

[0010] Anechoic chamber;

[0011] A turntable, rotatably connected to the anechoic chamber, for placing the device to be tested;

[0012] A first driving component, used for driving the rotation of the turntable;

[0013] A controller, installed in the shielded control room and connected to the first driving component, for controlling the start and stop of the first driving component;

[0014] A high-frequency antenna tower and a low-frequency antenna tower are both installed in the anechoic chamber and are used to install high-frequency wires and low-frequency wires respectively; the high-frequency wires are used to receive the radiated high-frequency electromagnetic waves of the device under test, and the low-frequency wires are used to receive the radiated low-frequency electromagnetic waves of the device under test; the frequency range of the radiated high-frequency electromagnetic waves is 1 GHz-18 GHz, and the frequency range of the radiated low-frequency electromagnetic waves is 30 MHz-1 GHz;

[0015] A switch control box is installed in the shielded control room and is connected to the high-frequency antenna and the low-frequency antenna respectively, and is used to receive the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves, and provide a radio frequency test link required for the test;

[0016] The receiver is installed in the shielded control room and connected to the switch control box. Based on the radio frequency test link, the receiver detects the radiation emission indicators of the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves respectively.

[0017] By adopting the above technical solution, since a low-frequency antenna and a high-frequency antenna are installed in the anechoic chamber at the same time, when the device to be tested is tested, the controller controls the first driving component to start, the first driving component drives the turntable to rotate, the low-frequency antenna is used to receive the radiated low-frequency electromagnetic waves of the device to be tested, and the high-frequency antenna is used to receive the radiated high-frequency electromagnetic waves of the device to be tested, and then the radiated low-frequency electromagnetic waves and the radiated high-frequency electromagnetic waves are transmitted to the switch control box, and the required electromagnetic waves are screened out based on the required radio frequency test link and transmitted to the receiver, and the receiver detects the radiation emission index of the electromagnetic wave; since both low-frequency electromagnetic and high-frequency electromagnetic can be tested, and there is no need to manually replace the antenna, the applicability of electromagnetic testing is improved.

[0018] Optionally, the anechoic chamber comprises:

[0019] Two second driving components, used for driving the high-frequency antenna tower and the low-frequency antenna tower to rise and fall respectively;

[0020] Two third driving components are respectively installed on the high-frequency antenna tower and the low-frequency antenna tower, and are respectively used to drive the high-frequency antenna and the low-frequency antenna to rotate from a vertical state to a horizontal state or from a horizontal state to a vertical state;

[0021] The controller is connected to the two second driving components and the two third driving components respectively, and is used to control the start and stop of the second driving components and the third driving components.

[0022] By adopting the above technical solution, during the test process, the controller can control the second driving component to start so that the second driving component drives the high-frequency antenna tower and / or the low-frequency antenna tower to rise and fall, and control the third driving component to start so that the high-frequency antenna and / or the low-frequency antenna rotates, thereby changing the polarity of the high-frequency antenna and / or the low-frequency antenna; thereby, the test of the radiation of high-frequency electromagnetic waves and the radiation of low-frequency electromagnetic waves of the equipment to be tested is more accurate.

[0023] Optionally, an amplifier is installed in the shielded control room, and the amplifier is connected to the switch control box.

[0024] By adopting the above technical solution, the electromagnetic wave output by the switch control box will first enter the amplifier, so that the amplifier amplifies the intensity of the electromagnetic wave.

[0025] Optionally, a filter module is also installed in the shielding control room, and the filter module is connected to the switch control box.

[0026] By adopting the above technical solution, the filter module is used to filter out the main frequency signal in the electromagnetic wave to improve the test accuracy.

[0027] Optionally, the radiation electromagnetic testing system further includes:

[0028] The test terminal is connected to the switch control box, the controller and the receiver respectively, and is used to send operation instructions to the switch control box and the controller, and to receive test data from the receiver.

[0029] By adopting the above technical solution and setting up the test terminal, the automatic operation of the radiation electromagnetic test system can be realized.

[0030] Optionally, the turntable includes:

[0031] A placing table is slidably connected to the turntable; a feeding channel and a discharging channel are opened in the turntable, and the feeding channel and the discharging channel are connected;

[0032] A fourth driving component is installed in the discharge channel and is used to drive the placement table to slide;

[0033] A conveyor belt is installed in the feed channel, one end of which is close to the feed inlet of the feed channel, and the other end of which can abut against and be flush with the placement table;

[0034] A baffle, horizontally slidably connected to the surface of the turntable, and used to open and close the inlet of the feed channel;

[0035] The controller is connected to the fourth driving component and the motor of the conveyor belt respectively, and is used to control the start and stop of the fourth driving component and the motor of the conveyor belt.

[0036] By adopting the above technical solution, after the current device under test completes the test, the controller controls the fourth drive component to start, so that the placement table descends, and then controls the motor of the conveyor belt to start, so that the next device under test is transported to the placement table, and the previous device under test enters the discharge channel; then the controller controls the motor of the conveyor belt to stop running, and then controls the fourth drive component to start, so that the placement table is reset, so that the device under test is tested again, so that the tests of multiple devices under test can be connected.

[0037] Optionally, the discharge channel is slidably connected to a first push plate near the placement table, and the sliding direction of the first push plate is perpendicular to the sliding direction of the placement table; a fifth driving component is also installed in the discharge channel, and the fifth driving component is used to drive the sliding of the first push plate;

[0038] The controller is connected to the fifth driving component and is used to control the start and stop of the fifth driving component.

[0039] By adopting the above technical solution, after the placement table descends to the preset position, the controller controls the fifth driving component to start, so that the first push plate pushes the device to be tested on the placement table into the discharge channel, thereby avoiding the situation where the previous device to be tested cannot be pushed into the discharge channel by the subsequent device to be tested with a smaller size.

[0040] Optionally, the discharge channel includes a material discharge area and a storage area; a pressure sensor is installed at one end of the storage area close to the material discharge area, and the pressure sensor is connected to the controller;

[0041] A second push plate is slidably connected to one end of the storage area close to the blanking area, and the sliding direction of the second push plate is parallel to the sliding direction of the first push plate; a sixth driving component is installed in the storage area, and the sixth driving component is used to drive the sliding of the second push plate;

[0042] The controller is connected to the sixth driving component and is used to control the start and stop of the sixth driving component.

[0043] By adopting the above technical solution, after the pressure sensor detects the device to be tested, it sends a control signal to the controller, the controller controls the sixth driving component to start, the sixth driving component drives the sliding of the second push plate, and the second push plate pushes the device to be tested away from the pressure sensor, thereby facilitating the subsequent dropping of the device to be tested.

[0044] Optionally, a buffer pad is installed at one end of the storage area close to the blanking area; the pressure sensor is installed on the buffer pad, or the buffer pad is placed above the pressure sensor.

[0045] By adopting the above technical solution, the purpose of providing the buffer pad is to reduce the impact on the device under test and avoid damage to the device under test.

[0046] In a second aspect, the present application provides a radiation electromagnetic testing method, which adopts the following technical solution:

[0047] A radiated electromagnetic testing method, comprising:

[0048] After the radiation electromagnetic test environment is pre-built, the turntable is controlled to rotate, the high-frequency antenna tower and the low-frequency antenna tower are controlled to rise and fall, and the high-frequency antenna and the low-frequency antenna are controlled to convert polarity; the high-frequency antenna and the low-frequency antenna respectively transmit the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves to the switch control box, and the switch control box outputs the screened electromagnetic waves to the receiver, and the receiver detects the radiation emission index; wherein the polarity conversion of the high-frequency antenna and the low-frequency antenna refers to the high-frequency antenna and the low-frequency antenna rotating from a vertical state to a horizontal state or from a horizontal state to a vertical state;

[0049] After the test of the current device under test is completed, the placement table is controlled to descend;

[0050] After the placement table descends to a preset position, the first push plate is controlled to push the current device to be tested to the discharge channel;

[0051] After the first push plate is reset, controlling the conveyor belt to transfer the next device to be tested to the placement table;

[0052] When it is detected that the next device to be tested is placed on the placement table, the conveyor belt is controlled to stop running, and the placement table is controlled to reset.

[0053] In summary, the present application has at least the following beneficial effects:

[0054] 1. The purpose of installing low-frequency antennas and high-frequency antennas in the anechoic chamber at the same time is to test both low-frequency electromagnetics and high-frequency electromagnetics, and there is no need to manually replace the antenna, thereby improving the applicability of electromagnetic testing.

[0055] 2. The purpose of setting up a conveyor belt in the turntable and placing the lifting table is to directly replace the previous device under test with the next device under test, so as to connect the tests of multiple devices under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a structural block diagram of an implementation method of the first embodiment of the system of the present application;

[0057] Figure 2 is a cross-sectional schematic diagram showing the internal structure of the turntable;

[0058] Figure 3 is with Figure 2 Schematic cross-section showing the internal structure of the turntable from different viewing angles;

[0059] Figure 4 It is a flowchart of an embodiment of the method of the present application;

[0060] Figure 5 This is a flowchart of the steps after S130.

[0061] Explanation of the reference numerals: 100, shielding control room; 101, controller; 102, switch control box; 103, receiver; 104, amplifier; 105, filter module; 106, test terminal; 200, radio wave darkroom; 210, turntable; 211, placement table; 213, feeding channel; 214, discharging channel; 2141, blanking area; 2142, storage area; 215, fourth driving component; 216, conveyor belt; 217, baffle; 218, pressure sensor; 219, second push plate; 220, sixth driving component; 221, buffer pad; 230, first driving component; 240, high frequency antenna tower; 250, low frequency antenna tower; 260, second driving component; 270, third driving component; 280, fifth driving component; 290, first push plate; 300, auxiliary plate. DETAILED DESCRIPTION

[0062] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1 -Attached Figure 4 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] An embodiment of the present application discloses a radiation electromagnetic testing system. Figure 1 As an implementation of the radiation electromagnetic testing system, the radiation electromagnetic testing system may include:

[0064] Shielded control room 100;

[0065] Anechoic chamber 200;

[0066] A turntable 210 is rotatably connected to the anechoic chamber 200 and is used to place the device under test;

[0067] Specifically, the device to be tested is placed at the center of the turntable 210, and the height of the turntable 210 from the ground is 1.5 m; the turntable 210 can rotate bidirectionally, and the rotation angle range is -360 degrees to +360 degrees.

[0068] The first driving component 230 is used to drive the rotation of the turntable 210; wherein the first driving component 230 can be a motor.

[0069] The controller 101 is installed in the shielding control room 100 and connected to the first driving component 230, and is used to control the start and stop of the first driving component 230;

[0070] Specifically, the controller 101 may be a device with a control and display function such as a PLC; the panel on the controller 101 may display the height, polarity direction, and angle of the turntable 210 of the low-frequency antenna and the high-frequency antenna. In addition, the controller 101 may be operated manually, or connected to the test terminal 106 and controlled by the system software installed in the test terminal 106.

[0071] The high-frequency antenna tower 240 and the low-frequency antenna tower 250 are both installed in the anechoic chamber 200 and are used to install high-frequency wires and low-frequency wires respectively; the high-frequency wires are used to receive the high-frequency electromagnetic waves radiated by the device under test, and the low-frequency wires are used to receive the low-frequency electromagnetic waves radiated by the device under test; the frequency range of the radiated high-frequency electromagnetic waves is 1GHz-18GHz, and the frequency range of the radiated low-frequency electromagnetic waves is 30MHz-1GHz;

[0072] It should be noted that the high-frequency antenna and the low-frequency antenna are both 3 meters away from the device under test, and the height from the ground is 1.5 meters.

[0073] The switch control box 102 is installed in the shielded control room 100 and is connected to the high-frequency antenna and the low-frequency antenna respectively, and is used to receive the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves, and provide the radio frequency test link required for the test;

[0074] The receiver 103 is installed in the shielding control room 100 and connected to the switch control box 102. Based on the radio frequency test link, the receiver 103 detects the radiation emission index of the radiated high-frequency electromagnetic wave and the radiated low-frequency electromagnetic wave. The receiver 103 may be a spectrum analyzer.

[0075] In addition, the anechoic chamber 200 may further include:

[0076] The two second driving components 260 are respectively used to drive the high-frequency antenna tower 240 and the low-frequency antenna tower 250 to rise and fall; wherein, the two second driving components 260 may have the same structure, for example, both are motor screw transmission structures; in other embodiments, they may also be different, as long as the lifting function can be achieved.

[0077] Specifically, the lifting range of the high-frequency antenna tower 240 and the low-frequency antenna tower 250 is 1 m to 4 m.

[0078] The two third driving components 270 are respectively installed on the high-frequency antenna tower 240 and the low-frequency antenna tower 250, and are respectively used to drive the high-frequency antenna and the low-frequency antenna to rotate from a vertical state to a horizontal state or from a horizontal state to a vertical state; rotating from a vertical state to a horizontal state or from a horizontal state to a vertical state is to change the polarity of the antenna. The two third driving components 270 can be motors.

[0079] The controller 101 is connected to the two second driving components 260 and the two third driving components 270 respectively, and is used to control the two second driving components 260 and the two third driving components 270 to start and stop independently.

[0080] An amplifier 104 and a filter module 105 are installed in the shielding control room 100, and both the amplifier 104 and the filter module 105 are connected to the switch control box 102. The filter module 105 includes a band-stop filter, a band-pass filter, a high-pass filter, etc. required for communication and BT / WIFI certification testing. When testing, the intensity of the electromagnetic wave can be amplified first, and then the main frequency signal can be filtered out, or the main frequency signal can be filtered out first, and then the intensity of the electromagnetic wave can be amplified.

[0081] In order to realize the automatic operation of the radiation electromagnetic test system, the radiation electromagnetic test system may further include a test terminal 106, which is placed in the shielding control room 100; the test terminal 106 is respectively connected to the switch control box 102, the controller 101 and the receiver 103, and is used to send operation instructions to the controller 101 and the switch control box 102, and to receive test data in the receiver 103. The test terminal 106 may be a laptop computer, a host computer, a desktop computer, etc.

[0082] Reference Figure 2 and Figure 3 As another embodiment of the radiation electromagnetic testing system, the internal turntable 210 may include:

[0083] The placing table 211 is vertically slidably connected to the rotating table 210; a feeding channel 213 and a discharging channel 214 are provided in the rotating table 210, and the two are connected;

[0084] The fourth driving component 215 is installed in the discharge channel 214 and is used to drive the placement table 211 to slide;

[0085] The conveyor belt 216 is installed in the feeding channel 213, with one end close to the feeding port of the feeding channel 213 and the other end being able to abut and be flush with the placement table 211;

[0086] The baffle 217 is horizontally slidably connected to the surface of the turntable 210 and is used to open and close the inlet of the feed channel 213;

[0087] Specifically, the baffle 217 can slide manually or be controlled by an electric push rod.

[0088] The controller 101 is connected to the motors of the fourth driving component 215 and the conveyor belt 216 respectively, and is used to control the start and stop of the motors of the fourth driving component 215 and the conveyor belt 216 .

[0089] In addition, in order to avoid the situation that the previous device under test cannot be automatically pushed to the discharge channel 214 by the subsequent device under test of smaller size, the discharge channel 214 includes a blanking area 2141 and a storage area 2142; the blanking area 2141 is composed of two sections of channels perpendicular to each other; one end of a section of the channel on which the placement table 211 is installed is horizontally slidably connected to the first push plate 290 and is installed with the fifth driving component 280, and the fifth driving component 280 is used to drive the sliding of the first push plate 290; the controller 101 is connected to the fifth driving component 280 for controlling the start and stop of the fifth driving component 280.

[0090] A pressure sensor 218 is installed at another section of the passage of the storage area 2142 close to the blanking area 2141 , and the pressure sensor 218 is connected to the controller 101 .

[0091] In order to facilitate the subsequent blanking of the equipment to be tested, the storage area 2142 is horizontally slidably connected to one end of another section of the channel near the blanking area 2141 with a second push plate 219 and is installed with a sixth driving component 220, which is used to drive the sliding of the second push plate 219; the controller 101 is connected to the sixth driving component 220 for controlling the start and stop of the sixth driving component 220.

[0092] In order to reduce the impact on the device under test and avoid damage to the device under test, a buffer pad 221 is installed in another section of the channel of the storage area 2142 close to the blanking area 2141; the pressure sensor 218 is installed on the buffer pad 221. In other embodiments, the pressure sensor 218 can be placed above the buffer pad 221.

[0093] A discharge port for taking out the device to be tested is provided at one end of the storage area 2142 away from the material drop area 2141, and an auxiliary plate 300 for opening and closing the discharge port is vertically slidably connected to the side wall of the turntable 210. The auxiliary plate 300 can slide manually or by a driving structure such as an electric push rod.

[0094] It should be noted that the fourth drive component 215, the fifth drive component 280, and the sixth drive component 220 in the present application can have the same structure and can all use electric push rods; in other embodiments, they can also be different as long as they can achieve the sliding function. In addition, the power provided by electricity in the turntable of the present application can be powered by batteries.

[0095] The implementation principle of this embodiment is:

[0096] The device to be tested is placed at the center of the turntable 210, and then a test instruction is issued through the test terminal 106. After the controller 101 receives the test instruction, the controller 101 controls the first driving component 230 to start, and the first driving component 230 drives the turntable 210 to rotate; the controller 101 controls the second driving component 260 to start, and the second driving component 260 drives the high-frequency antenna tower 240 and the low-frequency antenna tower 250 to rise and fall respectively. The controller 101 controls the third driving component 270 to start, and the third driving component 270 drives the high-frequency antenna and the low-frequency antenna to rotate to change the polarity; the radiated high-frequency electromagnetic wave and the radiated low-frequency electromagnetic wave are received by the high-frequency antenna and the low-frequency antenna respectively, and then transmitted to the switch control box 102. Based on the required radio frequency test link, the switch control box 102 outputs the required electromagnetic wave to the amplifier 104. The amplifier 104 amplifies the intensity of the electromagnetic wave, and then it is transmitted to the filter module 105 to filter out the main frequency signal, and then it is transmitted to the receiver 103 to perform the radiation emission index test.

[0097] Based on the above system embodiment, another embodiment of the present application discloses a radiation electromagnetic testing method. Figure 4 As an implementation of the method, the method may include steps S110-S150:

[0098] S110, after the radiation electromagnetic test environment is pre-built, the turntable is controlled to rotate, the high-frequency antenna tower and the low-frequency antenna tower are controlled to rise and fall, and the high-frequency antenna and the low-frequency antenna are controlled to switch polarity; the high-frequency antenna and the low-frequency antenna transmit the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves to the switch control box respectively, and the switch control box outputs the screened electromagnetic waves to the receiver, and the receiver detects the radiation emission index; wherein the polarity conversion of the high-frequency antenna and the low-frequency antenna refers to the high-frequency antenna and the low-frequency antenna rotating from a vertical state to a horizontal state or from a horizontal state to a vertical state;

[0099] S120, after the test of the current device under test is completed, the placement table is controlled to descend;

[0100] Specifically, if the controller receives a completion instruction, it means that the test of the current device under test is completed.

[0101] S130, after the placement table descends to a preset position, controlling the first push plate to push the current device to be tested to the discharge channel;

[0102] Specifically, when the first driving component is a motor, whether the placement table reaches the preset position can be judged by the number of revolutions of the motor; or a photoelectric proximity sensor can be used. When the photoelectric proximity sensor senses the placement table, a signal is sent to the controller, and the controller controls the fifth driving component to start and controls the first driving component to stop running.

[0103] S140, after the first push plate is reset, controlling the conveyor belt to transfer the next device to be tested to the placement table;

[0104] S150, when it is detected that the next device to be tested is placed on the placement table, the conveyor belt is controlled to stop running, and the placement table is controlled to reset.

[0105] Specifically, a pressure sensor can be installed on the placement table. The pressure sensor is pressurized and sends a pressure signal to the controller. The controller determines that if the pressure signal changes from being present to being absent and then present again, and the duration of the pressure signal exceeds a preset duration threshold, it indicates that the next device to be tested is placed on the placement table.

[0106] Reference Figure 5 After step S130, steps S210-S220 may also be performed:

[0107] S210, receiving a signal that there is material;

[0108] Specifically, when the pressure sensor installed in the storage area is pressurized, a material presence signal is sent to the controller; and the controller receives the material presence signal.

[0109] S220, based on the material presence signal, controlling the second push plate to slide; the second push plate pushes the device to be tested away from the buffer pad.

[0110] It should be noted that steps S210 - S220 and steps S140 - S150 may be executed in parallel.

[0111] The implementation principle of this embodiment is:

[0112] After the radiation electromagnetic test environment is pre-built, the turntable is controlled to rotate, the high-frequency antenna tower and the low-frequency antenna tower are controlled to rise and fall, and the high-frequency antenna and the low-frequency antenna are controlled to convert polarity; the high-frequency antenna and the low-frequency antenna respectively transmit the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves to the switch control box, and the switch control box outputs the screened electromagnetic waves to the receiver, and the receiver detects the radiation emission indicators; after the test of the current device under test is completed, the placement table is controlled to descend, and after the placement table descends to the preset position, the first push plate is controlled to push the current device under test to the discharge channel.

[0113] Then, the first push plate is controlled to reset. After the first push plate is reset, the conveyor belt is controlled to transfer the next device to be tested to the placement table. When the next device to be tested is detected to be on the placement table, the conveyor belt is controlled to stop running, and the placement table is controlled to reset.

[0114] At the same time, a material presence signal is received, and based on the material presence signal, the second push plate is controlled to slide so as to push the device under test away from the buffer pad to avoid affecting the subsequent material drop of the device under test.

[0115] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application in sequence. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A radiated electromagnetic test system, It is characterized in that include: Shielded control room (100); Anechoic chamber (200); A turntable (210), rotatably connected to the anechoic chamber (200), and used for placing a device to be tested; A first driving component (230), used for driving the turntable (210) to rotate; A controller (101), installed in the shielding control room (100) and connected to the first driving component (230), and used to control the start and stop of the first driving component (230); A high-frequency antenna tower (240) and a low-frequency antenna tower (250) are both installed in the anechoic chamber (200) and are used to install high-frequency wires and low-frequency wires respectively; the high-frequency wires are used to receive high-frequency electromagnetic waves radiated by the device under test, and the low-frequency wires are used to receive low-frequency electromagnetic waves radiated by the device under test; the frequency range of the radiated high-frequency electromagnetic waves is 1 GHz-18 GHz, and the frequency range of the radiated low-frequency electromagnetic waves is 30 MHz-1 GHz; A switch control box (102) is installed in the shielded control room (100) and is connected to the high-frequency antenna and the low-frequency antenna respectively, and is used to receive the radiated high-frequency electromagnetic waves and the radiated low-frequency electromagnetic waves, and provide a radio frequency test link required for testing; A receiver (103) is installed in the shielding control room (100) and connected to the switch control box (102), and detects the radiation emission index of the radiated high-frequency electromagnetic wave and the radiated low-frequency electromagnetic wave respectively based on the radio frequency test link; The turntable (210) comprises: A placement table (211) is slidably connected to the turntable (210); a feed channel (213) and a discharge channel (214) are provided in the turntable (210), and the feed channel (213) and the discharge channel (214) are in communication; a fourth driving component (215), installed in the discharge channel (214), and used for driving the placement table (211) to slide; A conveyor belt (216) is installed in the feed channel (213), with one end close to the feed inlet of the feed channel (213) and the other end being able to abut against and be flush with the placement table (211); A baffle (217) slidably connected to the surface of the turntable (210) and used to open and close the inlet of the feed channel (213); The controller (101) is connected to the motors of the fourth driving component (215) and the conveyor belt (216) respectively, and is used to control the start and stop of the motors of the fourth driving component (215) and the conveyor belt (216); The discharge channel (214) is slidably connected to a first push plate (290) near the placement table (211), and the sliding direction of the first push plate (290) is perpendicular to the sliding direction of the placement table (211); a fifth driving component (280) is also installed in the discharge channel (214), and the fifth driving component (280) is used to drive the sliding of the first push plate (290); The controller (101) is connected to the fifth driving component (280) and is used to control the start and stop of the fifth driving component (280); The material discharge channel (214) comprises a material discharge area (2141) and a storage area (2142); a pressure sensor (218) is installed at one end of the storage area (2142) close to the material discharge area (2141), and the pressure sensor (218) is connected to the controller (101); One end of the storage area (2142) close to the blanking area (2141) is slidably connected to a second push plate (219), and the sliding direction of the second push plate (219) is parallel to the sliding direction of the first push plate (290); a sixth driving component (220) is installed in the storage area (2142), and the sixth driving component (220) is used to drive the sliding of the second push plate (219); The controller (101) is connected to the sixth driving component (220) and is used to control the start and stop of the sixth driving component (220); A buffer pad (221) is installed at one end of the storage area (2142) close to the blanking area (2141); the pressure sensor (218) is installed on the buffer pad (221), or the buffer pad (221) is placed above the pressure sensor (218).

2. A radiation electromagnetic testing system according to claim 1, It is characterized in that The anechoic chamber (200) comprises: Two second driving components (260), respectively used to drive the high-frequency antenna tower (240) and the low-frequency antenna tower (250) to rise and fall; Two third driving components (270) are respectively mounted on the high-frequency antenna tower (240) and the low-frequency antenna tower (250), and are respectively used to drive the high-frequency antenna and the low-frequency antenna to rotate from a vertical state to a horizontal state or from a horizontal state to a vertical state; The controller (101) is respectively connected to the two second drive components (260) and the two third drive components (270), and is used to control the start and stop of the second drive components (260) and the third drive components (270).

3. A radiation electromagnetic testing system according to claim 2, It is characterized in that An amplifier (104) is installed in the shielding control room (100), and the amplifier (104) is connected to the switch control box (102).

4. A radiation electromagnetic testing system according to claim 2, It is characterized in that A filter module (105) is also installed in the shielding control room (100), and the filter module (105) is connected to the switch control box (102).

5. A radiation electromagnetic testing system according to claim 2, It is characterized in that The radiation electromagnetic testing system also includes: The test terminal (106) is connected to the switch control box (102), the controller (101) and the receiver (103) respectively, and is used to send operation instructions to the switch control box (102) and the controller (101), and to receive test data from the receiver (103).

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