Electromagnetic compatibility test tool system and method suitable for near-field test

Abstract

The invention relates to the field of analytical chemistry detection, in particular to an electromagnetic compatibility testing tool system and method suitable for near-field testing, and the system comprises a to-be-tested sample EUT system, an electromagnetic compatibility testing platform, and an electromagnetic compatibility testing data processing and communication system. The electromagnetic compatibility test platform comprises a test platform base, a test platform stand column, a test platform rotary table, at least one mechanical arm assembly and a coordinable table board. The test platform base is connected with the test platform rotary table through the test platform stand column, the test platform rotary table is provided with the coordinable table top, and the mechanical arm assembly is arranged on the tunable top face. According to the invention, the rotary table, the mechanical arm probe and the like are adopted for multi-dimensional accurate detection and positioning, a building block type multi-element combination test from a circuit board level to a unit part to a liquid chromatograph and a liquid chromatography-mass spectrometry system unit module can be realized, an electromagnetic compatibility radiation emission performance test is realized in a design and development stage of a product, the research and development rectification period is shortened, and the test efficiency is improved. And effective inspection is carried out before products are put on the market.

Description

Technical Field

[0001] The present invention relates to the field of analytical chemistry detection, and in particular to an electromagnetic compatibility testing tooling system and method suitable for near-field testing. Background Art

[0002] Liquid chromatography-mass spectrometry technology has been gradually applied to LC-MS in vitro diagnostic testing products with its advantages of fast analysis speed, high sensitivity, high accuracy, strong specificity, and simultaneous analysis of multiple indicators, usually focusing on the detection of vitamins, drugs and drug metabolites, hormones, immunosuppressants, etc. It also includes reagents for the detection of other physiological, biochemical or immune function indicators, and is mainly used for in vitro quantitative detection of the content of specific analytes in samples such as human serum, plasma or blood spots, as an auxiliary diagnostic device.

[0003] The LC-MS system is mainly composed of a high-performance liquid chromatograph, an interface ion source, a mass analyzer, a vacuum system, and a computer data processing system. The mixed sample to be tested is injected through the automatic sampler in the high-performance liquid chromatography system, and separated by the chromatographic column in the chromatographic column thermostat. The separated components flowing out of the chromatographic system enter the ion source of the mass spectrometer through the interface in turn and are ionized. Then the ions are focused in the mass analyzer and separated according to the mass-to-charge ratio. The separated ion signals are converted into electrical signals and transmitted to the data processing system, realizing both qualitative and quantitative analysis of the sample to be tested.

[0004] The circuit hardware system in the HPLC system and LC-MS system usually consists of various electronic components such as RF chips, memory chips, sensors and amplifiers, and antennas, which are distributed on different functional circuit boards and different functional positions in the internal cavity of the instrument product. When the product is normal or fully loaded, electromagnetic interference will be generated by the circuit board, and through the connection between the board level and the sensor, the superposition and reflection will form an electromagnetic radiation signal, especially in the high-speed integrated communication system of the HPLC system or LC-MS system, which may cause electromagnetic interference in the communication between unit modules and the communication with the system.

[0005] Therefore, there is an urgent need for an electromagnetic compatibility test tooling system and method suitable for near-field testing. Summary of the invention

[0006] In order to overcome the problems existing in the prior art, the present invention aims to provide an electromagnetic compatibility test tooling system and method suitable for near-field testing.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an electromagnetic compatibility test fixture system suitable for near-field testing, comprising a sample EUT system to be tested, an electromagnetic compatibility test platform and an electromagnetic compatibility test data processing and communication system; the sample EUT system to be tested is arranged on the electromagnetic compatibility test platform, and the electromagnetic compatibility test data processing and communication system is communicatively connected with the sample EUT system and the electromagnetic compatibility test platform;

[0008] The sample EUT system to be tested is the object to be tested, and during the test, the sample EUT system to be tested is in a fully loaded running state;

[0009] The electromagnetic compatibility test platform is used to fix the sample EUT system to be tested and implement electromagnetic compatibility radiation emission performance test;

[0010] The electromagnetic compatibility test data processing and communication system is used for the control analysis and communication of the EUT system of the sample to be tested and each device on the electromagnetic compatibility test platform.

[0011] The present invention is further configured as follows: the electromagnetic compatibility test platform includes a test platform base, a test platform column, a test platform turntable, at least one mechanical arm assembly and a coordinated table top; the test platform base is connected to the test platform turntable through the test platform column, the coordinated table top is arranged on the test platform turntable, the coordinated table top includes a tunable top surface and a tunable bottom surface, the tunable top surface and the tunable bottom surface are connected by a plurality of supporting adjustable knobs; the mechanical arm assembly is arranged on the tunable top surface.

[0012] The present invention is further configured as follows: the robotic arm assembly is a robotic arm assembly with at least 5 degrees of freedom.

[0013] The present invention is further configured as follows: the robotic arm assembly includes a robotic arm base, a robotic arm column, a robotic arm shoulder, a robotic arm elbow, a robotic arm wrist, a robotic arm end effector and a robotic arm probe; the robotic arm base is installed on the tunable top surface, and the robotic arm base is connected to the robotic arm column, the robotic arm shoulder, the robotic arm elbow, the robotic arm wrist and the robotic arm end effector in sequence through a conductive slip ring structure, and the robotic arm probe is arranged on the robotic arm end effector.

[0014] It should be noted that the internal space wiring of the robotic arm assembly is distributed in a complete shielding cavity, and the number and orientation of the robotic arm assembly are fixed in accordance with the structural characteristics of the EUT system of the sample to be tested.

[0015] The present invention is further configured as follows: the electromagnetic compatibility test platform also includes a test object platform, the test object platform is embedded in the test platform turntable, a lifting mechanism is further provided at the bottom of the test object platform; and a scale is further provided on the test object platform.

[0016] The test object platform can be automatically raised and lowered by a lifting mechanism, and is used when there are ventilation holes or magnetic leakage structures at the bottom of the test object EUT to provide detection space for the robot arm probe.

[0017] The present invention is further configured as follows: the test platform base also includes a stepper motor, a motor driver, and a reduction gearbox; the stepper motor is connected to the motor driver, the output end of the stepper motor is connected to the input end of the reduction gearbox, and the output end of the reduction gearbox is connected to the bottom of the test platform turntable through a coupling.

[0018] The present invention is further configured as follows: the test platform column is a hollow structure, the output end of the stepper motor extends into and passes through the test platform column to connect to the turntable; a gas-liquid electric slip ring is also arranged in the test platform column, and the gas-liquid electric slip ring is used to fix the pipeline or circuit of the EUT system of the sample to be tested.

[0019] The present invention is further configured as follows: the test platform base is provided with a roller, and the roller is configured with a roller locking structure.

[0020] The present invention is further configured as follows: a level and a turntable power socket are also provided on the tunable top surface.

[0021] The present invention is further configured as follows: the electromagnetic compatibility test data processing and communication system includes an electromagnetic compatibility test platform software system, and the electromagnetic compatibility test platform software system realizes data collection, recording, storage, calibration, and maintenance alarm functions.

[0022] The present invention also relates to an electromagnetic compatibility testing method suitable for near field testing, which is used in conjunction with the above-mentioned electromagnetic compatibility testing tooling system suitable for near field testing, and comprises the following steps:

[0023] S1: Place the EUT system of the sample to be tested on the test table, and connect the pipes and lines of the EUT system of the sample to be tested to the gas-liquid-electric slip ring. The EUT system of the sample to be tested can be tested by 360° rotation;

[0024] S2: Observe the level instrument and adjust the height of the adjustable bottom surface and the adjustable top surface by adjusting the support adjustable knob to perform horizontal calibration;

[0025] S3: After the EUT system of the sample to be tested is powered on and running stably, the electromagnetic compatibility test platform is started. The test platform turntable and the robotic arm assembly scan the EUT system of the sample to be tested layer by layer at different distances according to the preset program, and the electromagnetic signals obtained by the scan are recorded and processed.

[0026] In summary, the beneficial effects of the above technical solution of the present invention are as follows:

[0027] The present invention adopts automatic turntable for precise positioning, and at the same time, the multi-dimensional precise detection and positioning of the manipulator probe can realize the building block multi-combination test from the circuit board level to the unit components and then to the liquid chromatograph and the liquid-mass spectrometry system unit module. In the design and development input stage of the product, the electromagnetic compatibility radiation emission performance pre-test and preliminary test can be realized, shortening the research and development rectification cycle, and when the product is mass-produced, the electromagnetic compatibility radiation emission performance of the product can be sampled or tested in batches, and effective inspection can be carried out before the product is put on the market. Provide the quality control enterprise standards of electromagnetic compatibility test tooling for the production and manufacturing enterprises of liquid phase and liquid-mass spectrometry systems, improve the reliability of electromagnetic compatibility and electrical safety performance of liquid phase products and liquid-mass spectrometry products, and provide basic guarantees for the expansion and integration of liquid phase products and liquid-mass spectrometry products into the field of medical devices, the field of medicine and even the military industry. At the same time, the multi-channel data acquisition and processing method adopted saves the cost of human data recording and maintenance, and achieves the purpose of reducing costs and increasing efficiency for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the overall structure of the electromagnetic compatibility test fixture system described in Example 1.

[0030] Figure 2 This is a top view of the electromagnetic compatibility test fixture system.

[0031] Figure 3 Schematic diagram of the test platform base.

[0032] Figure 4 Schematic diagram of the robotic arm assembly.

[0033] Figure 5 This is a schematic diagram of the electromagnetic compatibility test fixture system described in Example 2.

[0034] Figure 6 This is a schematic diagram of the electromagnetic compatibility test fixture system described in Example 3.

[0035] Figure 7 Schematic diagram of the LC-MS system.

[0036] Figure 8 This is a schematic diagram of the electromagnetic compatibility test fixture circuit hardware system.

[0037] In the accompanying drawings, the meanings of the structural marks are as follows:

[0038] 1-test platform base, 2-test platform column, 3-test platform turntable, 4-test platform, 5-test platform tunable bottom surface, 6-test platform tunable top surface, 7-first mechanical arm assembly, 8-second mechanical arm assembly, 9-test sample EUT system, 10-turntable power socket, 11-gas-liquid electric slip ring, 12-test platform center axis, 13-scale, 14-power socket, 15-test platform gas circuit interface, 16-test platform liquid circuit interface, 17-level meter;

[0039] A1- robot arm base, A2- robot arm rotating column, A3- robot arm shoulder, A4- robot arm elbow, A5- robot arm wrist, A6- robot arm end effector, A7- robot arm probe;

[0040] 31-liquid chromatography system solvent tray, 32-liquid chromatography system automatic sample injector, 33-liquid chromatography system high pressure constant flow pump, 34-liquid chromatography system chromatographic column constant temperature box, 35-mass spectrometer, 36-sample solvent bottle. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in the field without making any creative work should all fall within the scope of protection of the present invention.

[0042] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0043] Embodiment 1:

[0044] like Figure 1-Figure 4 As shown, it is a preferred embodiment of the present invention, an electromagnetic compatibility test fixture system suitable for near-field testing, including a sample EUT system 9 to be tested, an electromagnetic compatibility test platform and an electromagnetic compatibility test data processing and communication system; the sample EUT system 9 to be tested is arranged on the electromagnetic compatibility test platform, and the electromagnetic compatibility test data processing and communication system is communicatively connected with the sample EUT system 9 to be tested and the electromagnetic compatibility test platform; the electromagnetic compatibility test data processing and communication system is used for control analysis and communication of the sample EUT system 9 to be tested and each device on the electromagnetic compatibility test platform.

[0045] The electromagnetic compatibility test platform includes a test platform base 1, a test platform column 2, a test platform turntable 3, at least one mechanical arm assembly and a coordinable table top; the test platform base 1 is connected to the test platform turntable 3 through the test platform column 2, the coordinable table top is arranged on the test platform turntable 3, the coordinable table top includes a tunable top surface 6 and a tunable bottom surface 5, and the tunable top surface 6 and the tunable bottom surface 5 are connected by a plurality of supporting adjustable knobs; the mechanical arm assembly is arranged on the tunable top surface 6, and a turntable power socket is also arranged on the tunable top surface 6.

[0046] The test platform base is provided with an external power socket connected to an external power supply system, a test platform gas circuit interface 15 and a test platform liquid circuit interface 16 for external connection, and a level 17 is embedded in the tunable top surface of the test platform. The horizontal position is calibrated by observing the bubble position of the level 17.

[0047] The electromagnetic compatibility test platform also includes a test platform 4, which is embedded in the test platform turntable 3, and a lifting mechanism is also provided at the bottom of the test platform 4; a scale 13 is also provided on the test platform 4. The test platform 4 can be automatically lifted and lowered by the lifting mechanism, and is used to provide a detection space for the robot arm probe A7 when there is a ventilation hole or a magnetic leakage structure at the bottom of the test sample EUT system 9.

[0048] The robotic arm assembly includes a robotic arm base A1, a robotic arm column A2, a robotic arm shoulder A3, a robotic arm elbow A4, a robotic arm wrist A5, a robotic arm end effector A6 and a robotic arm probe A7; the robotic arm base A1 is installed on the tunable top surface 6, and the robotic arm base A1 is connected to the robotic arm column A2, the robotic arm shoulder A3, the robotic arm elbow A4, the robotic arm wrist A5 and the robotic arm end effector A6 in sequence through a conductive slip ring structure, and the robotic arm probe A7 is arranged on the robotic arm end effector A6.

[0049] In this embodiment, two robotic arm assemblies are provided, which are fixed at the diagonal of the tunable top surface 6 by magnetic attraction. The robotic arm assembly adopts a 5-degree-of-freedom robotic arm with a maximum load of 0.5KG, an arm span of 630MM, a fully extended 100% robotic arm, and a joint speed of 183° / s. The A2 robotic arm column can rotate freely, and the joint rotation range is 360°.

[0050] The end effector A6 of the robot arm can be controlled to move to any position in the Cartesian space through the robot arm column A2 and the robot arm shoulder A3, simulating a humanoid arm for rotation and tilting. The robot arm elbow A4, the robot arm wrist A5, and the robot arm end effector A6 form a humanoid wrist, which is coupled together by three degrees of freedom. The interaction of these five degrees of freedom enables the electromagnetic compatibility detection robot arm to effectively detect within the effective working area. The end effector A6 of the robot arm is a clamping end effector that can clamp the robot arm probe A7 at the end of the robot arm to reach the specified detection position. In the process of rectifying the near-field electromagnetic detection, it is necessary to keep the settings of each device in the near-field scanning system unchanged. If the probe, cable or amplifier is replaced, it is necessary to re-measure the electrical signal data of the standard calibration part to obtain the correction coefficient of the system.

[0051] It should be noted that the internal space wiring of the mechanical arm assembly is distributed in a complete shielding cavity, and the number and orientation of the mechanical arm assembly are distributed and fixed in combination with the structural characteristics of the sample EUT system 9 to be tested.

[0052] The test platform base 1 also includes a stepper motor, a motor driver, and a reduction box; the stepper motor is connected to the motor driver, the output end of the stepper motor is connected to the input end of the reduction box, and the output end of the reduction box is connected to the bottom of the test platform turntable 3 through a coupling. The test platform column 2 is a hollow structure, and the output end of the stepper motor extends through the test platform column 2 to connect to the test platform turntable 3; the test platform column is also provided with a gas-liquid electric slip ring 11, and the gas-liquid electric slip ring 11 is used to fix the pipeline or circuit of the test sample EUT system 9. The test platform turntable 3 also includes a test platform central axis 12, and the stator of the gas-electric-hydraulic slip ring 11 is installed and fixed on the test platform central axis 12, and the rotor is fixed on the rotating shaft of the direct-drive stepper motor through the center position of the test platform turntable 3.

[0053] Before the electromagnetic compatibility test fixture is tested, the test platform needs to be calibrated horizontally, the EUT system 9 to be tested is placed on the test platform 4, and the EUT system position to be tested is quantitatively placed with reference to the scale 13. The test platform base 1 can be fixed or movable according to the usage scenario, and the mobile test platform is provided with four locking universal wheels under the base. The test platform base 1 is embedded with a direct-drive stepper motor, the step angle of the stepper motor is 1.8°, the reduction ratio of the reduction box is 20:1, the operating frequency is set at 500Hz, and the speed is 0.125r / s. The test platform column 2 integrates the stepper motor shaft, coupling, reduction box and gas-liquid electric slip ring 11 inside, wherein the gas-liquid electric slip ring 11 is fixed at the motor shaft, and the coupling is connected to the test platform turntable 3 through the motor shaft. The gas circuit in the gas-liquid electric slip ring 11 is connected to the gas circuit part of the vacuum pump of the mass spectrometer accessory, the liquid circuit in the gas-liquid electric slip ring 11 is connected to the waste liquid pipeline of the liquid phase system, and the circuit in the gas-liquid electric slip ring 11 is connected to the AC power cable of the test sample EUT system 9. The coupling fixedly connects the test platform turntable 3 with the motor shaft, and a millimeter-level scale 13 is set on the surface of the test platform test sample table 4 to ensure that the test sample EUT system is placed at the center of the test sample table 4.

[0054] The electromagnetic compatibility test data processing and communication system includes an electromagnetic compatibility test platform software system, and the electromagnetic compatibility test platform software system realizes data collection, recording, storage, calibration, maintenance and alarm functions.

[0055] like Figure 8As shown, the CPU central control circuit hardware system of the tooling system is installed inside the test platform base 1. The CPU of the central control system is responsible for all electrical functions and communications of the tooling system. The power supply part of the central control system is a switching power supply. The working frequency and communication frequency of the CPU of the central control system are distributed through the clock generator. At the same time, the CPU of the central control system is responsible for controlling the 360° rotation of the test platform turntable 3 by the direct-drive stepper motor. Among them, the direct-drive stepper motor is an integrated driver, and the positioning information such as the motor speed and angle are fed back in real time. The mechanical arm assembly is composed of an embedded micro-control mainboard. Each joint of the mechanical arm is equipped with a stepper motor and a motor driver. The driver of the mechanical arm is installed through the host computer software to apply the control algorithm of the mechanical arm. The embedded micro-control mainboard of the mechanical arm converts the command signal of the host computer into a control signal, and the stepper motor outputs the corresponding torque through the control board, and feeds back the angular displacement and angular velocity data of the motor shaft to the control unit. The CPU of the central control system can calculate the joint angle in real time according to the control algorithm, and convert it into an analog voltage signal, which is output to the driver. The driver drives the motor to rotate, thereby controlling the movement of the mechanical arm. Through the host computer data scanning and acquisition software, set the spectrum range and scanning accuracy of the electromagnetic compatibility near-field scanning, initialize the electromagnetic compatibility test platform and the automatic robotic arm system, enter the scanning process, and the robotic arm assembly clamps different robotic arm probes A7 to perform a fast panoramic scan on the sample EUT system 9 to be tested. Scan 3 times, record the data, lock the specific location of the interference source, and then perform local precise positioning scanning. After the scan is completed, locate the specific location of the interference source, find the problem item, make corrections, and upload the scan data to the data processing system in real time.

[0056] In actual application, after the tooling test platform is powered on normally, the system enters the self-test state, and the test platform turntable 3 automatically rotates 360°. The optical coupler can be set for positioning, and then the first mechanical arm component 7 and the second mechanical arm component 8 enter the self-test state, and self-test each joint of the five degrees of freedom. If the self-test fails, a buzzer alarm will sound and the software interface will prompt an alarm. After the self-test passes, enter the initialization setting of the tooling test system, set the running trajectory of the mechanical arm component, and combine the motion trajectory algorithm to perform the inverse solution of the mechanical arm motion trajectory. By controlling the angles of each joint, the mechanical arm executes according to the preset motion trajectory. During the operation, the electromagnetic data collected by the mechanical arm probe A7 is collected and compared with the preset threshold. If it does not exceed the threshold, the test platform turntable 3 is started to rotate at a constant speed at a preset angle, and the electromagnetic scanning system of the component is started. The layer-by-layer speed decreasing scanning method is adopted. The above process is repeated to complete the scanning of each dimension of the sample EUT system to be tested until the data collected by the mechanical arm probe A7 exceeds the threshold and stops, and a positioning prompt is given. After the interference source is found, the product is rectified.

[0057] Embodiment 2:

[0058] like Figure 5As shown, an electromagnetic compatibility test method suitable for near-field testing is used in conjunction with the above-mentioned electromagnetic compatibility test fixture system suitable for near-field testing. The sample EUT system 9 to be tested in Example 2 is a circuit board. In the early stage of product development, while ensuring the realization of the basic functions of the circuit board, it is also necessary to comply with the relevant standards of electromagnetic compatibility and electrical safety. The circuit design principle, the selection of electronic components, and the number of circuit board layers and wiring and other processes need to be simulated and the sample customized. The electromagnetic compatibility test fixture system can be used to test the near-field electromagnetic compatibility radiation emission at the circuit board level, find the location of the interference source with the strongest radiation emission, further determine the circuit board design problem, and lock the rectification direction.

[0059] The following steps are involved:

[0060] S1: Place the EUT system 9 on the test platform, and connect the pipelines and lines of the EUT system 9 to the gas-liquid electric slip ring 11. The EUT system 9 can be tested by 360° rotation.

[0061] The semi-finished components of the UV-visible detector in the high-performance liquid chromatography system include liquid crystal display, buttons, various communication interfaces, internal wiring, trigger terminals and connections, etc. The DC power supply +5V, +12V of the data processing board power supply interface are connected, and connected to the 4-way circuit in the gas-liquid electric slip ring 11 of the test platform to ensure that the circuit board can be tested for 360° rotation on the test platform.

[0062] S2: Observe the level instrument 13 and adjust the height of the adjustable bottom surface 5 and the adjustable top surface 6 by adjusting the support adjustable knob to perform horizontal calibration;

[0063] The detector semi-finished assembly is mounted on the circuit board support plate and fixed on the 4 test piece table, and the level meter 13 is observed. The horizontal position of the tunable top surface 6 is calibrated by adjusting the 4 supporting adjustable knob screws between the tunable bottom surface 5 and the tunable top surface 6.

[0064] S3: After the EUT system 9 of the sample to be tested is powered on and runs stably, the electromagnetic compatibility test platform is started. The test platform turntable 3 and the mechanical arm assembly scan the EUT system of the sample to be tested layer by layer at different distances according to the preset program, and the electromagnetic signals obtained by the scanning are recorded and processed.

[0065] After the preparation is completed, the circuit board is powered on and enters the tooling system initialization phase. After the initialization is completed, the test platform turntable 3 rotates to the zero point. The robotic arm assembly clamps the robotic arm probe A7 through the mechanical end effector A6 to scan the circuit board layer by layer at different distances. First, a quick scan is performed to lock the interference source area, and then the local area is locked for a fine scan. Finally, the electronic components or wiring or vias with excessive electromagnetic interference are found, and the electromagnetic signals obtained from the scan are recorded and processed. By analyzing the test results, the interference sources with excessive radiation emissions are rectified, and the wiring position and space are rectified. The test is repeated under the same conditions until the results meet the standard requirements.

[0066] Embodiment 3:

[0067] like Figure 6-Figure 7 As shown, an electromagnetic compatibility test method suitable for near-field testing is used in conjunction with the above-mentioned electromagnetic compatibility test tooling system suitable for near-field testing. The difference from Example 2 is that the sample EUT system 9 to be tested in this embodiment is a liquid-mass spectrometry system.

[0068] The LC-MS system includes a solvent tray 31, an automatic sampler 32, a high-pressure constant-current pump 33, a chromatographic column thermostat 34 and a mass spectrometer 35, wherein four sample solvent bottles 36 are stored in the solvent tray 31, and the mobile phase mixed by the high-pressure constant-current pump 33 is transported to the automatic sampler 32 sampling system, separated by the chromatographic column in the chromatographic column thermostat 34, and the separated components flowing out of the chromatographic system enter the ion source of the mass spectrometer 35 through the interface in turn to be ionized, and then the ions are focused in the mass analyzer and separated according to the mass-to-charge ratio. The separated ion signals are converted into electrical signals and transmitted to the data processing system, thereby realizing both qualitative and quantitative analysis of the samples to be tested.

[0069] The following steps are involved:

[0070] S1: Place the EUT system 9 on the test table, connect the pipelines and lines of the EUT system 9 to the gas-liquid electric slip ring 11, and the EUT system 9 can be tested by 360° rotation;

[0071] Place the LC-MS system reference scale 13 at the center of the sample table 4 to be tested on the electromagnetic compatibility test tooling test platform, connect the power cords of each module in the LC-MS instrument to the power socket 10 of the test platform turntable, connect the waste liquid flow path of the liquid chromatography system, the communication interface connection, and the vacuum pump gas path that provides the vacuum system for the mass spectrometer 35 to the gas-liquid electric slip ring 11 of the test platform to ensure 360° free rotation of the LC-MS system.

[0072] Connect the platform power socket 14 to the external power supply 220V~ / 50Hz, connect the external vacuum pump gas circuit to the test platform gas circuit interface 15, and connect the waste liquid collection bottle of the liquid phase system to the test platform liquid circuit interface 16. In order to avoid interference from the external electromagnetic environment, a transparent shielding cover is set above the electromagnetic compatibility test platform. The lighting and camera system can be set inside the shielding cover to clearly observe the working status of the liquid quality system to be tested.

[0073] S2: Observe the level and adjust the height of the adjustable bottom surface and the adjustable top surface by adjusting the supporting adjustable knob to perform horizontal calibration; adjust the adjustable bottom surface 5 and the adjustable top surface 6 by observing the value or position of the level 17.

[0074] S3: After the EUT system of the sample to be tested is powered on and running stably, the electromagnetic compatibility test platform is started. The test platform turntable and the robotic arm assembly scan the EUT system of the sample to be tested layer by layer at different distances according to the preset program, and the electromagnetic signals obtained by the scan are recorded and processed.

[0075] When the LC-MS system is powered on and running stably, start the electromagnetic compatibility test platform and enter the electromagnetic compatibility test platform system self-test stage. After the test platform turntable 3 and the mechanical arm assembly are initialized, the LC-MS system combines the motion trajectory of the mechanical arm assembly and the electromagnetic signal results on the test platform turntable 3, and compares them with the initial threshold results. The LC-MS system is scanned in a layer-by-layer speed-decreasing scanning mode, and the electromagnetic signals obtained by the scan are recorded and processed. By analyzing the test results, the interference sources with excessive radiation emission are rectified, and the wiring position and space are rectified. Repeat the test under the same conditions until the results meet the standard requirements. Through the continuous rectification process, the test threshold qualified results are used as the internal test standards of the product enterprise.

[0076] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An electromagnetic compatibility test fixture system suitable for near-field testing, characterized in that: It includes a sample EUT system to be tested, an electromagnetic compatibility test platform and an electromagnetic compatibility test data processing and communication system; the sample EUT system to be tested is arranged on the electromagnetic compatibility test platform, and the electromagnetic compatibility test data processing and communication system is communicatively connected with the sample EUT system and the electromagnetic compatibility test platform; The sample EUT system to be tested is the object to be tested, and during the test, the sample EUT system to be tested is in a fully loaded running state; The electromagnetic compatibility test platform is used to fix the sample EUT system to be tested and implement electromagnetic compatibility radiation emission performance test; The electromagnetic compatibility test data processing and communication system is used for the control analysis and communication of the EUT system of the sample to be tested and each device on the electromagnetic compatibility test platform.

2. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 1, characterized in that: The electromagnetic compatibility test platform includes a test platform base, a test platform column, a test platform turntable, at least one mechanical arm assembly and a coordinated table top; the test platform base is connected to the test platform turntable through the test platform column, the coordinated table top is arranged on the test platform turntable, the coordinated table top includes a tunable top surface and a tunable bottom surface, the tunable top surface and the tunable bottom surface are connected by a plurality of supporting adjustable knobs; the mechanical arm assembly is arranged on the tunable top surface.

3. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 2, characterized in that: The robotic arm assembly is a robotic arm assembly with at least 5 degrees of freedom.

4. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 3, characterized in that: The robotic arm assembly includes a robotic arm base, a robotic arm column, a robotic arm shoulder, a robotic arm elbow, a robotic arm wrist, a robotic arm end effector and a robotic arm probe; the robotic arm base is installed on the tunable top surface, and the robotic arm base is connected to the robotic arm column, the robotic arm shoulder, the robotic arm elbow, the robotic arm wrist and the robotic arm end effector in sequence through a conductive slip ring structure, and the robotic arm probe is arranged on the robotic arm end effector.

5. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 4, characterized in that: The electromagnetic compatibility test platform also includes a test object platform, which is embedded in the test platform turntable. A lifting mechanism is also provided at the bottom of the test object platform; and a scale is also provided on the test object platform.

6. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 5, characterized in that: The test platform base also includes a stepper motor, a motor driver, and a reduction box; the stepper motor is connected to the motor driver, the output end of the stepper motor is connected to the input end of the reduction box, and the output end of the reduction box is connected to the bottom of the test platform turntable through a coupling.

7. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 6, characterized in that: The test platform column is a hollow structure, and the output end of the stepper motor extends into and passes through the test platform column to connect to the test platform turntable; a gas-liquid electric slip ring is also arranged in the test platform column, and the gas-liquid electric slip ring is used to fix the pipeline or circuit of the EUT system of the sample to be tested.

8. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 7, characterized in that: The test platform base is provided with a roller, and the roller is equipped with a roller locking structure.

9. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 8, characterized in that: The adjustable top surface is also provided with a level meter and a turntable power socket.

10. The electromagnetic compatibility test fixture system suitable for near field testing according to claim 9, characterized in that: The electromagnetic compatibility test data processing and communication system includes an electromagnetic compatibility test platform software system, and the electromagnetic compatibility test platform software system realizes data collection, recording, storage, calibration, maintenance and alarm functions.

11. An electromagnetic compatibility test method suitable for near field testing, used in conjunction with an electromagnetic compatibility test tooling system suitable for near field testing as claimed in claim 10, characterized in that: The following steps are involved: S1: Place the EUT system of the sample to be tested on the test table, and connect the pipes and lines of the EUT system of the sample to be tested to the gas-liquid-electric slip ring. The EUT system of the sample to be tested can be tested by 360° rotation; S2: Observe the level instrument and adjust the height of the adjustable bottom surface and the adjustable top surface by adjusting the support adjustable knob to perform horizontal calibration; S3: After the EUT system of the sample to be tested is powered on and running stably, the electromagnetic compatibility test platform is started. The test platform turntable and the robotic arm assembly scan the EUT system of the sample to be tested layer by layer at different distances according to the preset program, and the electromagnetic signals obtained by the scan are recorded and processed.

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