31 results about "Immunity Testing" patented technology

The invention relates to the technical field of electromagnetic compatibility conducted immunity testing, and discloses an electromagnetic compatibility conducted immunity calibration system and method, and the system comprises a signal generation module, a coupling and decoupling network adaptive assembly system, a calibration load access system, an auxiliary equipment terminating system, and a grounding protection system. The method can adapt to different types of coupling and decoupling networks, normalizes the calibration process, reduces the calibration uncertainty, and reduces the introduced uncertainty by 17.9% compared with a conventional method. The invention further discloses an automatic calibration method, the calibration process of conduction immunity is optimized, the initial level can be set through an algorithm, the target level addressing time can be reduced, the calibration time can be shortened, the effective detection time proportion can be improved, and various parameters of an actually measured product are embedded in all links of the calibration process, so that the calibration accuracy is improved. The device can better simulate the testing process of an actually measured product, and improves the calibration accuracy and applicability.

The invention discloses a visual automobile electromagnetic compatibility radiation anti-interference test method, device and equipment, and relates to the technical field of vehicle testing, and the method comprises the steps: collecting the radiation anti-interference test data of automobile electronic equipment from a plurality of test equipment in real time through a data collection layer, and transmitting the data to a data processing layer; cleaning, analysis and feature extraction are carried out on the data in the data processing layer to obtain key indexes, and the key indexes comprise the maximum radiation value and the standard exceeding frequency number; inputting the key indexes into a visual display layer, and displaying the distribution, ranking and trend of test results of different vehicle enterprises and vehicle types in the forms of maps, histograms and line diagrams; the key index is monitored in real time based on a preset threshold value, an alarm signal is triggered when the key index exceeds the preset threshold value, and early warning prompt information is generated; and a test scheme is optimized according to the alarm signal and the early warning prompt information, and test parameters of the data acquisition layer are dynamically adjusted.

The invention discloses an electromagnetic interference accurate injection device and an electromagnetic interference accurate injection method for loop-level immunity verification, which are suitable for immunity tests of power equipment, electronic equipment and the like in various complex environments. The device is composed of an electromagnetic interference signal generator, a handheld injection probe, an oscilloscope, a coaxial transmission line and the like. The probe structure adopts a double-cavity design, cavities of an interference coupling network and an attenuation network are separated through a central shielding partition plate, the shielding partition plate is filled with high-insulation silica gel, and it is ensured that the cavities are independently isolated and have high-voltage protection performance. The device can generate various electromagnetic interference signals including surges, electrical fast transient pulse trains, damped oscillation waves and the like, and accurately injects the electromagnetic interference signals into an internal loop of equipment to be tested through a coaxial transmission line. The device is compact and flexible in design, is suitable for injection requirements of various electromagnetic interference signals, is especially suitable for immunity verification in a multi-stress environment, and has relatively high environmental adaptability and operation convenience.

The invention provides an intelligent networked automobile communication system EMC test method and system, and the method comprises the steps: carrying out the field test of a communication system of a vehicle, and recording the first position change information between a moving vehicle and a static base station; performing path mapping according to the first position change information to obtain second position change information between the static vehicle and the mobile base station; and keeping the test vehicle static in the test site according to the second position change information, moving the test base station, and testing the communication system of the test vehicle. The problem that in the prior art, a common network connection system testing scheme and original monitoring equipment of a semi-anechoic chamber cannot meet the electromagnetic radiation immunity testing requirement of an intelligent network connection automobile network connection system is solved.

The invention relates to the technical field of electromagnetic compatibility, and discloses a wireless radio frequency electromagnetic field immunity test method, which comprises the following steps of S1, generating a continuous wave radio frequency signal in a frequency band of 80MHz-6GHz through a programmable radio frequency signal generation device; s2, constructing an orthogonal polarization electromagnetic field in the radiation test area; s3, three-dimensional space field intensity distribution is monitored in real time based on the 16-channel digital probe array, and a space field intensity distribution cloud picture is generated; s4, synchronously monitoring performance parameters of the tested equipment through an optical coupler isolation acquisition channel; s5, using a slope type field intensity incremental method to increase the field intensity at a step length less than or equal to 1V / m; and S6, establishing a field intensity-performance incidence matrix, generating a three-dimensional electromagnetic vulnerability distribution map, and outputting an immunity grade index. A multi-system interference scene in a real complex electromagnetic environment can be simulated through a programmable radio frequency signal generating device and a time division multiplexing mechanism in combination with carrier frequency hopping and modulation depth gradual change.

[Problem] To make it possible to predict an immune state in the future by assessing a factor of an immune state as well as an existing health examination and a lifestyle habit. [Solution] An immune state prediction provision system 1 is configured such that at least one item of state data associated with an immune state which is selected from a sleep state, a motion state, a lifestyle habit state, a life state, a work state and a meal state is acquired, then a learning model that generates immune state prediction data is produced from the acquired state data, and then the immune state is predicted on the basis of the learning model from newly acquired state data. Subsequently, the difference between the immune state prediction data and execution data such as the results of a health examination and the results of an immunity test is analyzed to produce analysis result data, and the analysis result data is output. In addition, at least one item of data selected from the state data, the immune state prediction data, the execution data and the analysis result data are provided for a user or a third person.

This invention discloses a system and method for testing the radio frequency interference (RFI) immunity performance of train vehicle equipment. The system includes a test terminal, a mobile terminal, an adjustable bracket, an antenna, and a field strength probe. The mobile terminal houses a power supply and an immunity signal generator. The power supply powers the test terminal and the immunity signal generator, and the immunity signal generator generates and amplifies the RF modulation signal. The test terminal is located on one side of the top of the mobile terminal. This system and method for testing the RFI immunity performance of train vehicle equipment utilizes a mobile terminal connected to the test terminal, antenna, field strength probe, and immunity signal generator to perform RFI immunity testing. The immunity signal generator simulates the RF interference environment, eliminating the need for an anechoic chamber. Testing can be conducted directly within the train carriages after the train assembly is completed and all functions are properly debugged, improving the overall mobility and portability of the testing system.

1. The name of the design product: immunity test card. 2. The use of the design product: immunity test card for testing. 3. The design points of the design product: in the front view. 4. The picture or photo that best indicates the design points: front view.

The application discloses a kind of sensor chip high reliability high accuracy test system and method for extreme environment, belong to sensor test technical field.The test method includes multiple physical field coupling environment loading, automobile working condition excitation injection, anti-interference synchronous acquisition, anti-drift real-time error compensation, dynamic performance degradation analysis and drift immunity test report generation steps.Anti-drift real-time error compensation is monitored by distributed auxiliary sensor array in real time temperature gradient kurtosis, vibration spectrum entropy and electromagnetic shielding effectiveness, freezes CNN convolution layer weight after triggering drift flag, only carries out incremental federal compensation to fully connected layer, and introduces the physical constraint correction compensation output based on FEM simulation.The application can effectively inhibit the mismatch of compensation coefficient caused by environmental drift, improve the long-term stability and precision of sensor chip test under extreme environment, meet the AEC-Q100 full life cycle reliability verification requirement.

The utility model relates to the technical field of radio frequency radiation immunity testing, and discloses a to-be-tested equipment placing table in a radio frequency radiation immunity test, which comprises a table plate, a supporting piece and a fixing device, and is characterized in that the table plate is provided with a wire accommodating groove which extends along the length direction of the table plate; the supporting piece is arranged on the surface, adjacent to the ground, of the bedplate; and the fixing device is arranged in the wire accommodating groove and is used for fixing a connecting wire of the to-be-tested equipment. According to the placing table for the equipment to be tested in the radio frequency radiation immunity test, the fixing device is arranged in the wire containing groove, the height of the fixing device is not higher than the upper surface of the table plate, the fixing device is used for fixing a connecting wire of the equipment to be tested, and when the number of cables, signal wires and control wires of the equipment to be tested is large, the fixing device is fixed. The cables, the signal lines and the control lines are limited in the wire accommodating grooves through the fixing devices, so that all the cables, the signal lines and the control lines can be in a uniform interference signal field, and the influence on a test result is avoided.

This invention provides a method and system for testing the electromagnetic radiation immunity of components, relating to the field of electromagnetic immunity testing technology. The invention sets a range for the electromagnetic frequency and amplitude of the interference signal, generating multiple particles characterizing the interference signal within this range. Through iterative particle swarm analysis, it rapidly collects highly sensitive sample points that cause functional abnormalities in components during electromagnetic interference testing. By clustering these highly sensitive samples, it locates the electromagnetic interference sensitive range of the target component. Compared to full-band scanning and fixed-point scanning methods for electromagnetic interference testing, this invention enables automated and quantitative extraction of the electromagnetic sensitivity range, reducing subjective bias from manual location and improving analytical consistency and repeatability. Furthermore, by focusing on highly sensitive frequency bands and field strength ranges, it optimizes the test path, reduces redundant scanning points, and significantly improves the efficiency of electromagnetic interference testing.

The present disclosure provides a system for radiation immunity testing, comprising a signal generator (320), a power amplifier (330) and an antenna (340), characterized in that the signal generator (320) and the power amplifier (330) are disposed on a common rack (360) which can be arranged in a laboratory (100) for radiation immunity testing; when testing, the antenna (340) is also disposed on the common chassis (360) and is connected to the power amplifier (330) by means of a coaxial cable (354). Energy loss on a coaxial cable can be reduced, so that use of a high-cost high-power amplifier can be avoided.

The invention discloses a driving robot and an electromagnetic immunity testing method of a vehicle. The driving robot comprises a base, a support, a pneumatic grabbing manipulator module, a pneumatic driving lever manipulator module and a control device, the base, the support, the grabbing manipulator module and the driving lever manipulator module are used for being placed on a test vehicle in the anechoic chamber, and the control device is used for being placed outside the anechoic chamber. Wherein the first pneumatic valve is connected with the grabbing manipulator module through a first pneumatic pipeline, the second pneumatic valve is connected with the driving lever manipulator module through a second pneumatic pipeline, the control device controls air supply of the first pneumatic valve so as to control a claw part of the grabbing manipulator module to be in a clenching state or a loosening state, and the control device controls air supply of the second pneumatic valve so as to control the claw part of the grabbing manipulator module to be in a loosening state. And the end part of the driving lever manipulator module is controlled to extend or retract. According to the driving robot, the grabbing mechanical arm and the shifting rod mechanical arm are pneumatic and are not affected by a strong electromagnetic field during immunity testing, and the testing stability is ensured.

The invention relates to the technical field of electromagnetic compatibility testing, in particular to a chip radiation immunity testing method, device and equipment, a medium and a product, and the method comprises the steps: designing a testing tool according to the size information of a circuit board in a current electric drive controller, and designing a first insulating plate and a second insulating plate, an opening is formed in a corresponding position on the insulating plate on the same side as the cover plate according to the position information of the chip to be tested; and assembling the circuit board, the first insulating plate, the second insulating plate and the test tool, placing the assembled to-be-tested product in a preset test mechanism, applying a radio frequency interference signal to the to-be-tested chip, and monitoring the working state parameters of the to-be-tested chip so as to evaluate the radiation immunity performance of the to-be-tested chip. Therefore, the problems that an existing chip radiation immunity testing method is long in testing period, the chip is prone to being damaged, and adaptability is poor are solved, radiation immunity testing is carried out on the premise that the chip is not disassembled and a circuit board is not redesigned, and therefore the checking period is remarkably shortened.

The utility model provides an electrical fast pulse train immunity testing device, which relates to the technical field of electronic equipment, and comprises a tester body, the front side of the tester body is provided with a shield, the front surface of the shield is symmetrically provided with dustproof plates, the inner surface wall of the front side of the shield is symmetrically and fixedly connected with a motor frame, and the motor frame is fixedly connected with a motor. And a driving motor is mounted on the rear surface of the motor frame. According to the utility model, when the protective cover rotates to the front side of the tester body, the pressing block extrudes the travel switch so as to start the driving motor to drive the fan blades to rotate, air in the protective cover is discharged forwards under the action of the fan blades, dust just attached to a plug is pumped out together and then discharged from the triangular groove below the connecting frame, and the tester is simple in structure and convenient to use. The device is simple in structure and high in automation degree, achieves the effect that the cleanliness of the plug can be kept without regular cleaning by personnel, reduces the workload of operators, guarantees the stability during current transmission, and is convenient to use and high in practicability.

The invention discloses an EMC immunity testing method and device for an industrial vehicle, equipment and a medium, and belongs to the technical field of industrial vehicles. The method comprises the following steps: in an electromagnetic interference environment, acquiring acquisition information of a marker arranged on a driving wheel of the industrial vehicle in advance through a sensor; vehicle speed information of the industrial vehicle is determined according to the collected information and wheel diameter information obtained in advance; and determining an EMC immunity test result of the industrial vehicle according to the vehicle speed information. According to the technical scheme, the vehicle speed stability can be objectively verified in real time, the collected information and the vehicle speed data in the testing process can be reserved and backtracked, the subjectivity of manual judgment is avoided, standard and rigorous support is provided for the qualification judgment of the EMC immunity of the industrial vehicle, and meanwhile the method has extremely high applicability.

The invention discloses a novel immune test sampling tube, relates to the technical field of immune test sampling tubes, and aims to solve the problems that an existing sampling tube is not easy to filter a sample, the sample possibly contains impurities, the detection result of the sample is influenced, and mixing and centrifuging after sampling still need other devices. The invention provides a novel immune test sampling tube which comprises a suction tube, a driving tube is arranged on the suction tube, a driving assembly and a rotating rod are arranged in the driving tube, the driving assembly is connected with the rotating rod, the free end of the driving assembly is located in the suction tube, and the free end of the rotating rod is connected with a telescopic stirring assembly. The driving assembly can control the length of the stirring assembly, and connection or separation of the stirring assembly and the suction pipe is achieved. In the suction process, a sample can be filtered, impurities are prevented from entering the sample, and suction, filtration, mixing and centrifugation can be completed by using the same device.

The utility model belongs to the field of testing devices, in particular to a surge voltage immunity testing device, which aims at solving the problem of inaccurate primary testing result in the prior art and comprises a support frame and a disc, a positioning block is fixedly mounted at the top of the support frame, a turntable is rotatably mounted at the top of the positioning block, and the turntable is rotatably mounted at the bottom of the support frame. A plurality of grooves are formed in the surface of the rotating disc, a plurality of teeth are arranged on the circumference of the rotating disc, and the rotating disc is rotationally connected with the disc; the plurality of surge generators are respectively and fixedly arranged in the plurality of grooves and are used for generating voltages with different magnitudes; the socket is fixedly installed on the surface of the disc and used for testing a detected object, the motor drives the gear to be meshed with the teeth on the circumference of the rotating disc, and a worker can test an electric lamp under different voltages through rotation of the rotating disc without moving.

To solve the problem that there is no established method for testing the immunity of an unmanned aerial vehicle, and because the unmanned aerial vehicle originally flies and moves, it is difficult to perform an immunity test in an actual operation state.SOLUTION: The immunity testing device and the immunity testing method of the present disclosure enable a test in a state close to an actual operation of an unmanned aerial vehicle by using a test environment used for general electronic equipment or the like. A simulation signal is used for performing an immunity test as a simulated flight state equivalent to an actual operation state while the unmanned aerial vehicle stays at a fixed position in a certain space. A GTEM cell can be used as a shield structure for housing the unmanned aerial vehicle. The present disclosure also provides an evaluation configuration for analyzing a part vulnerable to an interference electromagnetic wave and specifying a part that may cause a malfunction in an unmanned aerial vehicle.SELECTED DRAWING: Figure 3

This invention provides an analog quantity immunity testing system, relating to the field of industrial automation testing technology. The system includes: a first test group electrically connected to the analog product under test; a second test group electrically connected to the first test group, including a conditioning unit and multiple control units; a safety testing instrument electrically connected to the second test group for providing high-voltage test signals; and a programmable power supply for providing low-voltage test signals and power supply. The conditioning unit provides signal conditioning conditions, and the multiple control units switch internal connection methods to construct an electrical test path matching the current test item, automatically performing insulation resistance testing, common-mode rejection testing, differential-mode rejection testing, and channel crosstalk testing. This system not only shortens the testing time for a single product and increases test throughput, but also ensures the consistency and accuracy of test results by eliminating human intervention, protecting the safety of test operators and meeting the needs for efficient, comprehensive, and safe testing of analog products.

The utility model belongs to the technical field of radiation immunity testing, and particularly relates to radiation immunity testing equipment of mobile equipment, which comprises a placement table, a clamping plate is arranged below the placement table, the clamping plate is arranged in the placement table, an electric push rod is fixedly arranged on the bottom surface of the clamping plate, a support frame is arranged below the electric push rod, and the support frame is arranged on the bottom surface of the clamping plate. A driving motor is fixedly installed on the inner wall of the supporting frame, the output end of the driving motor is fixedly connected with the bottom face of the electric push rod, two supporting plates are fixedly installed on the bottom face of the supporting frame, the inner wall of each supporting plate is fixedly connected with the bottom face of the containing table, and two iron blocks are fixedly installed on the side faces, away from each other, of the two supporting plates. By arranging the placing table, the clamping plate, the electric push rod, the supporting frame, the driving motor, the supporting plate, the iron block, the frame, the small motor, the rotating plate, the lifting push rod and the electromagnet, the placing table can be controlled in a lifting, disengagement placing and rotating mode, and the purpose that the angle of the placing table can be changed after the position is changed is achieved.

This utility model discloses an electromagnetic compatibility (EMC) testing device for automotive starting function, relating to the field of automotive whole-vehicle EMC testing technology. It includes a contact head, a cylinder, an angle adjustment unit, a spatial position adjustment unit, a reversing valve, and an air supply unit. The contact head is used to contact the automotive start button. The cylinder includes a cylinder body and a piston rod. The end of the piston rod is connected to the contact head. The spatial position adjustment unit and the angle adjustment unit are used to adjust the spatial position and direction of the contact head, respectively, so that it can be aligned with the automotive start button. The reversing valve connects to the two inner chambers of the cylinder through two branches to control the cylinder's movement. The air supply unit connects to the reversing valve to supply air to it. This utility model designs three button control methods. Compared with the prior art, this automotive starting function EMC testing device has strong versatility and anti-interference capabilities, and can be flexibly applied to radiation immunity testing of automotive starting function according to vehicle testing requirements.

The utility model relates to the field of electromagnetic anti-interference testing, and discloses an anti-interference performance detection device, which comprises a wall body and a sliding seat, a winch is fixedly arranged at the center of the upper end face of the outer wall of the wall body, a first motor is fixedly arranged at the upper end of the front end face of the winch, and a cable is movably sleeved on the outer wall of an inner shaft of the winch. A first threaded rod is rotationally arranged at the upper end of the center of one side of the inner wall of the wall, sliding rods are fixedly arranged at the upper end of one side of the wall and close to the front end and the rear end, a fixing seat is fixedly arranged at the upper end of one side of the outer wall of the wall, and a second motor is fixedly arranged on the upper end face of the fixing seat. According to the utility model, the halogen lamp can be quickly dismounted and mounted through the fixing mechanism, the height of the halogen lamp is adjusted by using the winch so as to facilitate replacement and maintenance, and the two connecting blocks can move synchronously by using the adjusting mechanism, thereby achieving the effect of adjusting the coverage angle of the test antenna.

The utility model discloses an immunoassay inspection sampling tube, which relates to the field of medical consumables. The immunoassay inspection sampling tube comprises a sampling tube body and a sealing cover arranged on the top of the sampling tube body, wherein the sampling tube body comprises: a plastic tube body, which is used to store materials, an anti-pull-back opening arranged on the top of the plastic tube body, and the anti-pull-back opening cannot be pulled out after being movably plugged with the sealing cover, and an integrally formed discharge seal is arranged on the top of the sealing cover. The immunoassay inspection sampling tube is constructed by sleeve- ing the hard cover body on the outer surface of the top of the connecting part and pressing downward so that the anti-pull-back opening is plugged into the anti-pull-back slot. At this time, if the sealing cover is pulled outward, the anti-pull-back opening will be broken, thereby playing a protective role. At the same time, when performing the test, the discharge seal is directly broken, and at this time, it is squeezed outward through the discharge tube, and there is no need to use a needle to extract, which is more convenient and reduces extra consumables.

The invention discloses a radio frequency electromagnetic field radiation immunity automatic test device and method for electrical measurement equipment. The device comprises a verification platform which is used for providing a test reference surface and installing correlation type laser; the tool clamp is used for fixing the electric measurement equipment and realizing multi-degree-of-freedom movement; the multi-attitude motion control system is used for controlling the motion of the tool clamp and realizing multi-attitude adjustment of the electric measurement equipment; according to the tool clamp, through the synergistic effect of the X-axis rotating mechanism, the Y-axis moving mechanism, the Z-axis rotating mechanism and the Z-axis moving mechanism, six test surfaces of the electric measurement equipment are coplanar with a radio frequency electromagnetic field uniform domain in sequence, and radio frequency electromagnetic field radiation immunity testing is completed. According to the invention, automatic accurate positioning and automatic measurement of different test postures of the electric measurement equipment can be realized.

This application discloses an immunity testing device, immunity testing method, equipment, and storage medium, belonging to the field of vehicle technology. In this device, the controller determines a first output power based on a first test frequency and sends the first test frequency and the first output power to a signal generator. The signal generator emits a first electromagnetic signal based on the first test frequency and sends the first electromagnetic signal and the first output power to a power amplifier. The power amplifier amplifies the first electromagnetic signal based on the first output power and radiates the amplified first electromagnetic signal through an antenna to a field strength output tube. The field strength output tube outputs the amplified first electromagnetic signal to the component under test, thereby determining the immunity performance of the component under test. Therefore, the device provided in this application can test the immunity of the component under test without the need for a dedicated laboratory, greatly reducing testing costs.

The embodiment of the invention provides a radiation immunity testing system and a radiation immunity testing method, and relates to the technical field of electromagnetic compatibility radiation immunity testing. The system comprises a first signal transmitting module used for transmitting a working signal required by a radio frequency module in tested equipment; the second signal transmitting module is used for transmitting an interference signal; the test module is in communication connection with the radio frequency module and is used for acquiring the first noise adding signal, generating a first sub-signal and a second sub-signal based on the first noise adding signal, sending the first sub-signal to the radio frequency module and determining first energy information of a first target signal in a problem frequency band in the second sub-signal; wherein the first noise adding signal is a working signal after the interference signal is superposed, and the first energy information is used for evaluating the radiation immunity of the radio frequency module. Therefore, the radiation immunity of the radio frequency module can be quantitatively evaluated, and the problem positioning efficiency can be improved.

The application provides an electrochemical immunoassay probe and a preparation method and application thereof, and an electrochemical direct immuno electrode, and belongs to the technical field of electrochemical detection.The electrochemical immunoassay probe provided by the application can be covalently connected to carbon nanomaterial and used as an immune probe of an electrochemical direct immuno test method.The electrochemical signal generated by the probe has a high signal-to-noise ratio, and can effectively improve the sensitivity of the electrochemical direct immuno test method, which is comparable to the commonly used electrochemical indirect immuno test method.The electrochemical immuno probe is firmly fixed on the surface of the electrode to construct an electrochemical direct immuno electrode, and the reagent-free operation of the electrochemical direct immuno test method can be realized, so that the operation difficulty can be greatly reduced and the required operation steps can be simplified.

The invention provides a method and a system for testing the electromagnetic radiation immunity of a part, and relates to the technical field of electromagnetic immunity tests.According to the method and the system, the value ranges of electromagnetic frequency and electromagnetic amplitude are set for interference signals, a plurality of particles representing the interference signals are generated in the ranges, and the electromagnetic radiation immunity of the part is tested through iteration of particle swarms. According to the method, high-sensitivity sample points causing part functional abnormity in an electromagnetic interference test are rapidly collected, and the electromagnetic interference sensitive range of a target part is positioned by performing clustering analysis on high-sensitivity samples. Compared with an electromagnetic interference test method of full-band scanning and fixed-point scanning, the method can achieve the automatic and quantitative extraction of the electromagnetic sensitive range, reduces the subjective deviation of manual positioning, and improves the analysis consistency and repeatability. And by focusing a high-sensitivity frequency band and a field intensity interval, a test path is optimized, redundant scanning point locations are reduced, and the electromagnetic interference test efficiency is greatly improved.

An electromagnetic immunity test system includes a data acquisition and control device, a linear module, an electromagnetic disturbance simulator, and an upper computer. The data acquisition and control device is in a data connection to the linear module, the electromagnetic disturbance simulator, and the upper computer. The linear module includes a grating ruler; and the linear module is disposed on the numerical control machine tool to measure location data of the sliding table of the numerical control machine tool and transmit the location data to the data acquisition and control device. The electromagnetic disturbance simulator is configured to generate and transmit an electromagnetic signal to the numerical control system. The data acquisition and control device is configured to read the location data in real time and transfer the real-time location data to the upper computer.