Field uniformity automatic test system special for electromagnetic compatibility laboratory

Abstract

The invention provides a special field uniformity automatic test system for an electromagnetic compatibility laboratory, and relates to the technical field of magnetic field detection, the special field uniformity automatic test system comprises a support rack, a laser positioning device, a motion platform, a field intensity detection device and an upper computer, the motion platform is used for supporting and driving the field intensity detection device to move. During use, the multiple laser induction limiting stoppers are arranged on the supporting rack at equal intervals and used for detecting the position of the field intensity detection device, the field intensity detection device moves through the servo driving device according to a preset scheme, and when the field intensity detection device blocks a single laser induction limiting stopper, the laser induction limiting stoppers are stopped by the servo driving device. After the multi-dimensional laser locator sends a shutdown instruction to the servo driving device, the field intensity detection device detects the field wave intensity of the current position, then the servo driving device drives the field intensity detection device again to move along the preset track until the shutdown instruction is received next time, and the effect that the calibration point location is accurate and convenient to position is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic field detection, and in particular to an automatic field uniformity testing system specially used in an electromagnetic compatibility laboratory. Background Art

[0002] The electromagnetic compatibility laboratory is a special type of laboratory established for electromagnetic compatibility testing. The anechoic chamber is a place for radiation emission tests and radiation immunity tests. According to the test distance, it is divided into 3m anechoic chamber and 10m anechoic chamber. Ten meters and three meters refer to the distance between the product to be tested (hereinafter referred to as EUT) and the antenna. The ten-meter anechoic chamber is generally a ten-meter semi-anechoic chamber, which means that the other five sides except the ground are paved with absorbing materials. The ground is a metal ground, which can simulate a non-reflective open space. The 10m semi-anechoic chamber can be used for radiation emission tests, radiation immunity tests, and electromagnetic compatibility tests such as shielding effectiveness tests.

[0003] The existing field uniformity calibration device has the problems of inaccurate calibration point positioning and the inability to ensure that the probe is installed horizontally and vertically. The field strength probe needs to be repeatedly positioned and installed, and the calibration time is long, which is inconvenient to use.

[0004] Therefore, the present application proposes a field uniformity automatic testing system specifically for electromagnetic compatibility laboratories, which is used to improve the accuracy of calibration point positioning and ease of use. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a field uniformity automatic testing system dedicated to an electromagnetic compatibility laboratory, so as to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides a field uniformity automatic test system dedicated to an electromagnetic compatibility laboratory, comprising: a support stand, a laser positioning device, a motion platform, a field strength detection device and a host computer; The support stand is used to support the laser positioning equipment; The motion platform is used to support and drive the field intensity detection device to move; The laser positioning device locates the position of the field intensity detection device by cooperating with the laser and the motion platform; The field strength detection device is used to detect the intensity of electromagnetic in the anechoic chamber; The laser positioning device includes a multi-dimensional laser positioning instrument and a plurality of laser sensing stoppers, wherein the plurality of laser sensing stoppers are evenly distributed on the front of the support frame in a rectangular shape and at equal distances, and the multi-dimensional laser positioning instrument interacts with the laser sensing stopper signals; The motion platform includes a horizontal platform frame, a servo drive device and a signal transceiver; A horizontal transmission belt is arranged at the center of the horizontal platform frame, a sliding platform is arranged on the horizontal transmission belt, the sliding platform moves with the horizontal transmission belt, a vertical platform is installed on the top of the sliding platform, a vertical transmission belt is installed on the vertical platform, and the field strength detection device is installed on the vertical transmission belt; There are two servo drive devices, which are respectively mounted on the horizontal platform frame and the sliding platform to drive the horizontal transmission belt and the vertical transmission belt to move respectively; The signal transceiver is installed on the sliding platform, and the signal transceiver is respectively connected to the two servo drive devices and the field strength detection device by signal and electricity, and the signal transceiver is also connected to the multi-dimensional laser locator by signal and electricity; The multi-dimensional laser locator is connected to the host computer by signal.

[0007] Preferably, the support frame is a resin frame, and the surface of the support frame supporting the multi-dimensional laser locator is a rectangular plane with a size of 1.5 meters * 1.5 meters.

[0008] Preferably, the number of the laser sensing stoppers is 16, and the 16 laser sensing stoppers are distributed in a 4*4 equidistant manner, and the laser sensing stoppers are spaced 0.5 meters apart from each other.

[0009] Preferably, the medium for signal connection is optical fiber, and the medium for electrical connection is a double-layer shielded cable, on which a ferrite magnetic ring is provided.

[0010] Preferably, a support beam is fixedly connected between the inner walls of the vertical stand, and the support beam supports the circuit of the field strength detection device, so that the circuit of the field strength detection device is U-shaped.

[0011] Preferably, the horizontal platform frame, horizontal transmission belt, sliding platform, vertical platform frame, vertical transmission belt and support beam are all made of insulating resin material.

[0012] Preferably, the insulating resin materials used for the support stand, horizontal platform stand, horizontal transmission belt, sliding table, vertical stand, vertical transmission belt and support beam are all EMC-specific low dielectric constant materials with a dielectric constant of less than 1.4.

[0013] Preferably, the field strength detection device includes a signal transmitter, an extension rod and a multi-dimensional probe. The signal transmitter is installed on a vertical transmission belt, and the signal transmitter can be raised and lowered along with the vertical transmission belt. The extension rod extends out of the side of the vertical platform. The multi-dimensional probe is installed at the end of the extension rod, and the multi-dimensional probe faces the field transmitting antenna inside the darkroom.

[0014] Preferably, the servo drive device comprises a servo motor and a Faraday shield, the servo motor is installed inside the Faraday shield, and the outer surface of the Faraday shield is connected to the ground.

[0015] Preferably, a wave absorbing layer is provided inside the servo motor housing.

[0016] As described above, the field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory of the present invention has the following beneficial effects: 1. The present invention arranges a number of laser sensing limiters at equal intervals on a support frame to detect the position of a field strength detection device. The field strength detection device is moved according to a predetermined plan through a servo drive device. When the field strength detection device blocks a single laser sensing limiter, the multi-dimensional laser locator sends a stop command to the servo drive device. The field strength detection device detects the field wave intensity at the current position, and then the servo drive device drives the field strength detection device to move along a predetermined trajectory again until the next stop command is received, thereby achieving the effect of accurate and convenient calibration point positioning.

[0017] 2. The present invention uses optical fiber as a signal transmission medium, uses a double-shielded cable as a power transmission medium, and arranges a ferrite magnetic ring on the double-shielded cable, thereby improving the anti-interference ability of signal and power transmission and further improving the accuracy of the monitoring signal of the field strength detection device.

[0018] 3. The present invention uses a servo motor and a Faraday shield to form a servo drive device, and sets an absorbing layer inside the servo motor housing, so that the servo motor has anti-interference performance. When performing field strength detection, the servo drive device can execute movement instructions more accurately and reduce the impact of the servo drive device's own work on the darkroom field.

[0019] 4. The present invention reduces the reflection effect of the material on electromagnetic waves and the influence of external factors on the field waves in the darkroom by setting the preparation materials of the supporting stand, horizontal platform stand, horizontal transmission belt, sliding table, vertical stand, vertical transmission belt and supporting beam to EMC-specific low dielectric constant insulating resin materials with a dielectric constant of less than 1.4.

[0020] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic structural diagram of the present invention.

[0022] Figure 2 Shown is a side view of the structure of the present invention.

[0023] Figure 3Shown is a schematic structural diagram of the servo drive device of the present invention.

[0024] Figure 4 It is a schematic diagram showing the structure of the wave absorbing layer on the inner wall of the servo motor of the present invention.

[0025] Figure 5 Shown is a schematic structural diagram of the double-layer shielded cable and ferrite magnetic ring of the present invention.

[0026] Figure 6 Shown is a block diagram of the workflow of the present invention.

[0027] Component number description 1. Support stand; 2. Laser positioning equipment; 201. Multi-dimensional laser locator; 202. Laser sensor limiter; 3. Motion platform; 301. Horizontal platform; 302. Horizontal transmission belt; 303. Sliding table; 304. Vertical stand; 305. Vertical transmission belt; 306. Servo drive device; 3061. Servo motor; 3062. Faraday shield; 3063. Absorbing layer; 307. Signal transceiver; 308. Support beam; 4. Field strength detection device; 401. Signal transmitter; 402. Extension rod; 403. Multi-dimensional probe; 5. Double-shielded cable; 501. Ferrite ring. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] See also Figures 1 to 6 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0030] like Figure 1-Figure 6As shown, the present invention provides a field uniformity automatic test system dedicated to an electromagnetic compatibility laboratory, comprising: a support stand 1, a laser positioning device 2, a motion platform 3, a field strength detection device 4 and a host computer. The support stand 1 is used to support the laser positioning device 2 so that the laser positioning device 2 can have a certain spatial height. The motion platform 3 is used to support and drive the field strength detection device 4 to move so that the field strength detection device 4 can overlap with the laser positioning device 2 in space. The laser positioning device 2 locates the position of the field strength detection device 4 through the cooperation of the laser and the motion platform 3 to automatically calibrate the position of the field strength detection device 4, so as to achieve uniform and automatic testing of the field strength in the darkroom. The field strength detection device 4 is used to detect the intensity of the electromagnetic in the radio wave darkroom, and feed back the test results to the host computer. The chip in the host computer simulates the obtained field strength data through an algorithm, thereby obtaining a more intuitive 3D model for display, and displaying it through a display device.

[0031] The laser positioning device 2 includes a multi-dimensional laser positioning device 201 and a plurality of laser sensing stoppers 202. The plurality of laser sensing stoppers 202 are evenly distributed in a rectangular shape on the front of the support platform 1. The multi-dimensional laser positioning device 201 interacts with the laser sensing stoppers 202 signals, and each laser sensing stopper 202 emits a laser in the direction of the field intensity detection device 4. When the field intensity detection device 4 blocks the laser signal, the laser sensing stopper 202 sends a signal to the multi-dimensional laser positioning device 201, and sends a stop signal to the servo drive device 306 through the multi-dimensional laser positioning device 201, so that the field intensity detection device 4 stops moving and performs detection. The trigger mechanism of the laser sensing stopper 202 is that if the signal of a single laser sensing stopper 202 is blocked, a signal is sent to the multi-dimensional laser positioning device 201. If the signals of multiple laser sensing stoppers 202 are blocked at the same time, no signal is sent to the multi-dimensional laser positioning device 201, which is used to shield the interference when the motion platform 3 moves.

[0032] The motion platform 3 includes a horizontal platform frame 301, a servo drive device 306 and a signal transceiver 307. A horizontal transmission belt 302 is arranged at the center of the horizontal platform frame 301, and a sliding platform 303 is arranged on the horizontal transmission belt 302. The sliding platform 303 moves with the horizontal transmission belt 302, and is used to realize the horizontal movement of the field intensity detection device 4. A vertical platform 304 is installed on the top of the sliding platform 303, and a vertical transmission belt 305 is installed on the vertical platform 304. The field intensity detection device 304 is installed on the vertical transmission belt 305, and is used to drive the vertical movement of the field intensity detection device 4, so that the field intensity detection device 4 can overlap with all the laser sensing stoppers 202 on the support frame 1 in space.

[0033] Specifically, there are two servo drive devices 306 , which are respectively mounted on the horizontal platform frame 301 and the sliding platform 303 , and respectively drive the horizontal transmission belt 302 and the vertical transmission belt 305 to move.

[0034] The signal transceiver 307 is mounted on the sliding table 303. The signal transceiver 307 is provided with an optical fiber transceiver and a power distributor for forwarding optical signals and power supply current for signal communication. The signal transceiver 307 is respectively connected to the two servo drive devices 306 and the field intensity detection device 4 by signal and electricity. The signal transceiver 307 is also connected to the multi-dimensional laser locator 201 by signal and electricity.

[0035] The multi-dimensional laser locator 201 is connected to the host computer by signal. The host computer is used to set the working logic of the multi-dimensional laser locator 201, the servo drive device 306 and the field intensity detection device 4. The host computer is a PC with control software.

[0036] In some embodiments, the support stand 1 of the present invention is a resin stand, which is used to reduce the reflection of electromagnetic waves and minimize the impact on the darkroom environment. The surface of the support stand 1 supporting the multi-dimensional laser locator 201 is a rectangular plane with a size of 1.5 meters * 1.5 meters.

[0037] In some embodiments, the number of the laser sensing stoppers 202 of the present invention is 16, representing 16 test points. The 16 laser sensing stoppers 202 are distributed in a 4*4 equidistant pattern, and the laser sensing stoppers 202 are spaced 0.5 meters apart from each other, so that a certain gap can be left while being evenly distributed. When the field intensity detection device 4 overlaps with a single laser sensing stopper 202 in space, the vertical stand 304 can be located in the gap between the laser sensing stoppers 202 to avoid interference with the laser sensing stoppers 202.

[0038] In some embodiments, the medium of the signal connection of the present invention is an optical fiber, and optical fiber signal transmission can avoid electromagnetic interference to the greatest extent, and improve the accuracy and stability of signal transmission. The medium of the electrical connection is a double-layer shielded cable 5, and a ferrite magnetic ring 501 is provided on the double-layer shielded cable 5 to improve the stability of power supply.

[0039] In some embodiments, a support beam 308 is fixedly connected between the inner walls of the vertical stand 304 of the present invention, and the support beam 308 supports the line of the field strength detection device 4, so that the line of the field strength detection device 4 is U-shaped. During the lifting and lowering process of the field strength detection device 4, the line of the field strength detection device 4 will always be suspended on the support beam 308 to prevent the cable from being entangled during the descent of the field strength detection device 4.

[0040] In some embodiments, the horizontal platform 301, the horizontal transmission belt 302, the sliding platform 303, the vertical platform 304, the vertical transmission belt 305 and the support beam 308 of the present invention are all made of insulating resin materials, thereby reducing the reflection effect of electromagnetic waves and improving the anti-interference performance of the servo drive device 306.

[0041] Specifically, the insulating resin materials used for the support stand 1, the horizontal stand 301, the horizontal transmission belt 302, the sliding table 303, the vertical stand 304, the vertical transmission belt 305 and the support beam 308 are all EMC-specific low dielectric constant materials with a dielectric constant of less than 1.4.

[0042] In some embodiments, the field strength detection device 4 of the present invention includes a signal transmitter 401, an extension rod 402 and a multi-dimensional probe 403. The signal transmitter 401 is installed on the vertical transmission belt 305, and the signal transmitter 401 can be raised and lowered with the vertical transmission belt 305 to adjust the position of the disposal direction. The extension rod 402 extends out of the side of the vertical stand 304, and the multi-dimensional probe 403 is installed at the end of the extension rod 402, thereby reducing the obstruction of the vertical stand 304 to the multi-dimensional probe 403 and improving the sensitivity of the multi-dimensional probe 403 detection. The multi-dimensional probe 403 faces the field transmitting antenna inside the darkroom, and is used to receive the electromagnetic field signal emitted by the field transmitting antenna to detect the intensity. According to the test requirements, the distance between the multi-dimensional probe 403 and the field transmitting antenna is 3 meters or 10 meters.

[0043] In some embodiments, the servo drive device 306 of the present invention includes a servo motor 3061 and a Faraday shield 3062. The servo motor 3061 is installed inside the Faraday shield 3062, and the outer surface of the Faraday shield 3062 is connected to the ground. The Faraday shield 3062 avoids or isolates the interference of the electromagnetic field in the darkroom on the servo motor 3061, thereby improving the stability of the servo motor 3061.

[0044] In some embodiments, a wave absorbing layer 3063 is disposed inside the housing of the servo motor 3061 of the present invention to further isolate interference from electromagnetic fields.

[0045] The specific use process of the present invention is as follows: The support stand 1 is placed in a dark room, and a motion platform 3 is provided on the front of the support stand 1 to support the field intensity detection device 4, so that the distance between the field intensity detection device 4 and the field transmitting antenna is 3 meters or 10 meters; The upper computer is used to set the working modes of the two servo drive devices 306, so that the field intensity detection device 4 moves at a uniform speed along a specified trajectory and sequentially blocks the laser sensor stopper 202; When the laser signal of a single laser sensing stopper 202 is blocked, the laser sensing stopper 202 sends feedback to the multi-dimensional laser locator 201, and sends a stop command to the servo drive device 306 through the multi-dimensional laser locator 201; After receiving the stop command, the servo drive device 306 stops immediately and feeds back a trigger command to the signal transmitter 401, so that the multi-dimensional probe 403 starts to detect the electromagnetic field strength in the darkroom; When the multi-dimensional probe 403 collects information, the information is transmitted to the host computer via optical fiber for storage; When the servo drive device 306 reaches the delay time, it continues to move along the predetermined trajectory until receiving the next stop signal; The above detection steps are repeated until all the points of the laser sensing stoppers 202 are detected, and then the host computer generates a 3D model for the collected data while observing and analyzing it.

[0046] In summary, the field uniformity automatic testing system of the present invention, which is specially used in the electromagnetic compatibility laboratory, arranges a number of laser sensing limiters 202 at equal intervals on the supporting frame 1 to detect the position of the field strength detection device 4. The field strength detection device 4 moves according to a predetermined plan through the servo drive device 306. When the field strength detection device 4 blocks a single laser sensing limiter 202, the multi-dimensional laser locator 201 sends a stop command to the servo drive device 306. The field strength detection device 4 detects the field wave intensity at the current position, and then the servo drive device 306 drives the field strength detection device 4 to move along a predetermined trajectory again until the next stop command is received, thereby achieving the effect of accurate and convenient calibration point positioning.

[0047] By using optical fiber as a signal transmission medium, using a double-layer shielded cable 5 as a power transmission medium, and arranging a ferrite magnetic ring 501 on the double-layer shielded cable 5, the anti-interference ability of signal and power transmission is improved, and the accuracy of the monitoring signal of the field strength detection device 4 is further improved.

[0048] The servo drive device 306 is formed by using a servo motor 3061 and a Faraday shield 3062, and a wave absorbing layer 3063 is provided inside the housing of the servo motor 3061, so that the servo motor 3061 has anti-interference performance. When performing field strength detection, the servo drive device 306 can execute movement instructions more accurately and reduce the impact of the servo drive device 306's own operation on the darkroom field.

[0049] By setting the preparation materials of the support stand 1, the horizontal platform stand 301, the horizontal transmission belt 302, the sliding table 303, the vertical stand 304, the vertical transmission belt 305 and the support beam 308 to EMC-specific low-dielectric constant insulating resin materials with a dielectric constant of less than 1.4, the reflection effect of the material on electromagnetic waves is reduced, and the influence of external factors on the field waves in the darkroom is reduced.

[0050] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A field uniformity automatic test system dedicated to electromagnetic compatibility laboratories, characterized in that: include: A support frame (1), a laser positioning device (2), a motion platform (3), a field strength detection device (4) and a host computer; The support stand (1) is used to support the laser positioning device (2); The motion platform (3) is used to support and drive the field intensity detection device (4) to move; The laser positioning device (2) locates the position of the field intensity detection device (4) by cooperating with the laser and the motion platform (3); The field strength detection device (4) is used to detect the intensity of electromagnetic field in the anechoic chamber; The laser positioning device (2) comprises a multi-dimensional laser positioning instrument (201) and a plurality of laser sensing stoppers (202), wherein the plurality of laser sensing stoppers (202) are evenly distributed in a rectangular shape at equal distances on the front of the support stand (1), and the multi-dimensional laser positioning instrument (201) interacts with the laser sensing stoppers (202) in signal exchange; The motion platform (3) comprises a horizontal platform frame (301), a servo drive device (306) and a signal transceiver (307); A horizontal transmission belt (302) is arranged at the center of the horizontal platform (301), a sliding platform (303) is arranged on the horizontal transmission belt (302), the sliding platform (303) moves along with the horizontal transmission belt (302), a vertical platform (304) is installed on the top of the sliding platform (303), a vertical transmission belt (305) is installed on the vertical platform (304), and the field strength detection device (304) is installed on the vertical transmission belt (305); The number of the servo drive devices (306) is two, and the two servo drive devices (306) are respectively installed on the horizontal platform frame (301) and the sliding platform (303), and respectively drive the horizontal transmission belt (302) and the vertical transmission belt (305) to move; The signal transceiver (307) is mounted on the sliding table (303), and the signal transceiver (307) is respectively connected to the two servo drive devices (306) and the field intensity detection device (4) in terms of signals and electricity. The signal transceiver (307) is also connected to the multi-dimensional laser locator (201) in terms of signals and electricity. The multi-dimensional laser locator (201) is signal-connected to a host computer.

2. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 1 is characterized in that: The support frame (1) is a resin frame, and the surface of the support frame (1) supporting the multi-dimensional laser locator (201) is a rectangular plane with a size of 1.5 meters*1.5 meters.

3. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 2 is characterized in that: The number of the laser sensing stoppers (202) is 16, the 16 laser sensing stoppers (202) are distributed in a 4*4 equidistant pattern, and the interval between any two of the laser sensing stoppers (202) is 0.5 meters.

4. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 1 is characterized in that: The medium for signal connection is an optical fiber, and the medium for electrical connection is a double-layer shielded cable (5), wherein a ferrite magnetic ring (501) is provided on the double-layer shielded cable (5).

5. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 1 is characterized in that: A support beam (308) is fixedly connected between the inner walls of the vertical stand (304), and the support beam (308) supports the circuit of the field strength detection device (4), so that the circuit of the field strength detection device (4) is U-shaped.

6. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 1 is characterized in that: The horizontal platform frame (301), the horizontal transmission belt (302), the sliding platform (303), the vertical platform frame (304), the vertical transmission belt (305) and the support beam (308) are all made of insulating resin material.

7. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 6 is characterized in that: The insulating resin materials used for the support stand (1), the horizontal stand (301), the horizontal transmission belt (302), the sliding table (303), the vertical stand (304), the vertical transmission belt (305) and the support beam (308) are all EMC-specific low dielectric constant materials with a dielectric constant of less than 1.

4.

8. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 1 is characterized in that: The field intensity detection device (4) comprises a signal transmitter (401), an extension rod (402) and a multi-dimensional probe (403); the signal transmitter (401) is mounted on a vertical transmission belt (305); the signal transmitter (401) can be raised or lowered along with the vertical transmission belt (305); the extension rod (402) extends out of a side of a vertical stand (304); the multi-dimensional probe (403) is mounted at an end of the extension rod (402); the multi-dimensional probe (403) faces a field transmitting antenna inside a darkroom.

9. The field uniformity automatic test system dedicated to electromagnetic compatibility laboratories according to any one of claims 1 to 8, characterized in that: The servo drive device (306) comprises a servo motor (3061) and a Faraday shield (3062); the servo motor (3061) is installed inside the Faraday shield (3062); and the outer surface of the Faraday shield (3062) is connected to the ground.

10. The field uniformity automatic test system dedicated to the electromagnetic compatibility laboratory according to claim 9, characterized in that: A wave absorbing layer (3063) is provided inside the housing of the servo motor (3061).

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