647 results about "Calibration test" patented technology

The invention relates to the technical field of calibration tests, in particular to an intelligent metering calibration method and system, and the method comprises the following steps: calculating the similarity between data points, constructing a similarity matrix, further calculating the fitting degree, carrying out the spectral decomposition, extracting a feature vector, carrying out the dimension reduction, mapping to a low-dimensional space, carrying out the data point clustering based on a feature vector matrix, and carrying out the calibration of the data points. An error cluster is identified and an error pattern is determined. According to the method, by calculating the similarity between the data points and mapping the similarity to the low-dimensional space, the error modes can be efficiently recognized and classified, the error correction path can be dynamically adjusted, error correction is more flexible and real-time, the error analysis depth is improved through spectral decomposition and feature vector extraction, and the error analysis accuracy is improved. Therefore, the error trends of the equipment under different conditions are accurately identified, the measurement precision and stability are remarkably improved, the error correction path parameters are updated in real time, the adaptability of the system to the operation change of the equipment is enhanced, and the calibration time is effectively shortened.

The invention relates to the technical field of calibration test, and particularly discloses a strapdown inertial navigation automatic calibration test method of a temperature control biaxial rate position turntable. Comprising the following steps: S1, multi-dimensional error modeling and layered calibration architecture: constructing a comprehensive error model containing a sensor scale factor error, an installation non-orthogonal error, a zero offset error, a cross axis coupling error and a temperature related error; s2, a wide temperature range self-adaptive compensation mechanism: carrying out heat preservation at a preset temperature point and executing turntable positioning and rate movement; s3, performing automatic data processing and parameter estimation; and S4, performing real-time error correction and dynamic verification: performing real-time error correction based on the estimated parameters, and evaluating navigation performance indexes such as position, speed and attitude precision. Through technical innovation, high-precision, automatic and wide-temperature-range calibration of the strapdown inertial navigation system is realized, and the method is suitable for aerospace, intelligent equipment and other scenes with strict navigation precision requirements, and has remarkable engineering application value and market competitiveness.

The invention relates to an AI server cooling water pump vibration quantity self-adaptive calibration test method and system, an intelligent test platform integrates a six-dimensional force sensor and a temperature compensation vibration exciter, the platform rigidity is automatically calibrated, a water pump-pipeline system transfer function is obtained, and a rotating speed-lift-modal frequency three-dimensional mathematical model is established; a three-axis MEMS accelerometer array is arranged at sensitive parts such as a water pump bearing seat and a motor shell, and vibration, current and pressure signals are synchronously collected; carrying out time-frequency domain signal processing by adopting variational mode decomposition in combination with self-adaptive S transformation, and extracting a 128-dimensional full-frequency domain feature vector containing a modulation side frequency band; effective values of vibration acceleration, speed and displacement are calculated through a frequency domain integration algorithm, and current harmonic interference is corrected through an electromagnetic vibration compensation model; and finally, a vibration health degree evaluation model containing 18 characteristic parameters is established based on a support vector machine, the test system comprises an intelligent test platform unit, a multi-source sensing unit, an edge calculation unit and a data management unit, and microsecond-level synchronous acquisition and GB-level data throughput are realized through a time sensitive network. And online incremental learning and automatic generation of a test report are supported. The method has the effect of improving the water pump vibration quantity test precision.

The invention relates to wide-range multi-component sensor calibration equipment and a wide-range multi-component sensor calibration method. The method comprises the following steps: firstly, checking equipment parts and setting a target temperature range and a compensation model of each temperature interval; then, dynamic temperature control is started, jig deformation is monitored in real time, a transient temperature gradient suppression technology is applied, multi-physical-quantity calibration is executed, and a compensation measurement value is output; then setting multi-environment coupling calibration test conditions to simulate actual working conditions, and monitoring and recording calibration data of each physical quantity; and finally, calculating a calibration error by combining a calibration result and a reference standard value. According to the process, by precisely setting parameters and combining dynamic control, real-time monitoring and multi-physical-quantity calibration, the transient temperature gradient influence is effectively inhibited, and the measurement precision of the sensor in a complex environment is ensured; the temperature control performance is improved through the micro soaking film and the intelligent temperature control strategy, the actual working condition is simulated through multi-environment coupling testing, the accuracy and reliability of the calibration result are remarkably improved through compensation and error calculation, and guarantee is provided for precise application of the sensor.

The invention belongs to the field of ultrasonic oil film thickness measurement, and discloses a minimum oil film thickness calibration method considering different friction pair shape structures, which utilizes an ultrasonic oil film thickness calibration platform capable of designing a corresponding calibration test piece according to different structure shapes of a measured friction pair, and aims at the shape structure characteristics of different friction pairs. The minimum oil film thicknesses of friction pairs with different shapes and structures are accurately controlled, ultrasonic reflection signals under the different minimum oil film thicknesses are collected and subjected to frequency domain analysis processing, and on the basis, polynomial fitting is conducted on the minimum oil film thicknesses and reflection coefficients in combination with a film thickness calculation model; and the ultrasonic minimum oil film thickness calibration under a special friction pair structure is realized.

The invention relates to a power battery specific heat capacity quasi-steady-state measurement method, which comprises the following steps of: respectively arranging heating films on two large surfaces of a power battery, and uniformly and symmetrically arranging a plurality of thermocouples on the heating film on one large surface along the diagonal direction of the power battery, thermocouples with the same number are reversely and symmetrically arranged on the heating film on the surface of the other large surface along the direction of the other crossed diagonal line of the power battery, and an insulating material is wrapped outside the power battery; placing the processed power battery in a temperature control box, connecting the temperature control box with external test equipment through a connecting line, and adjusting and controlling the temperature control box to keep the initial temperature constant; the temperature rise rate is calibrated through heat loss calibration in the heating temperature rise stage and the slow cooling stage, and the specific heat capacity of the power battery is calculated based on the calibrated temperature rise rate. The specific heat capacity of the power battery can be obtained without extra heat loss calibration test, the method is suitable for stylized data algorithm processing, the data processing time is short, and the test result is accurate.

The invention discloses a phased array ultrasonic detection method for anisotropic metal plate weld joints. The phased array ultrasonic detection method comprises the following steps: S1, preparation work before detection; s2, selecting instruments and detection parameters; s3, adjusting the detection system; s4, detection is carried out, wherein base metal detection is carried out on the peripheral area of the metal plate weld joint, and it is ensured that no defect affecting acoustic beam propagation exists in the base metal of the metal plate; s2, according to the instruments and the detection parameters selected in the step S2, scanning all the areas of the weld joint in sequence, and storing scanning detection data; and S5, detection result analysis: analyzing the stored scanning detection data, finding out defect signals, recording corresponding defect information, and correcting the defect information to obtain final accurate information corresponding to the defect signals. According to the method, a large number of calibration test blocks do not need to be manufactured, and the final accurate information corresponding to the defect signal can be obtained only by correcting the found defect information, so that the workload is reduced, and the detection efficiency is improved.

The invention relates to an engine vibration boundary condition calibration test bed and a test method, and belongs to the technical field of vehicle testing. According to the technical scheme, the engine vibration boundary condition calibration test bed comprises a simulation suspension used for installing an engine to be calibrated; the vibration excitation device comprises a Z-direction vibration exciter located at the bottom of the simulation suspension, a Y-direction vibration exciter located on one side or two sides of the simulation suspension in the vehicle driving direction, and an X-direction vibration exciter located on the front side and / or the rear side of the simulation suspension in the vehicle driving direction; a plurality of acceleration sensors which are installed on the simulation suspension and are used for collecting acceleration signals of the simulation suspension; and the data processing module is used for collecting and processing acceleration signals of the plurality of acceleration sensors. The scheme has the beneficial effects that the vibration environment of the engine in actual work can be accurately simulated, a reliable basis is provided for vibration calibration, and the calibration efficiency and the data accuracy are improved at the same time.

The invention relates to the technical field of highway bridge safety monitoring, and discloses a bridge dynamic weighing algorithm based on likelihood estimation. A bridge is used as a carrier for vehicle weighing, an influence line of the bridge is obtained through a calibration test, and an influence line mean vector and an influence line covariance matrix are calculated; an influence line matrix is obtained based on the influence line mean vector, the vehicle speed and the axle distance, and an initial axle load value is calculated through a Moses algorithm; calculating a mean square error diagonal matrix of a measurement error according to the influence line matrix, the bridge load response and the axle load of the previous iteration step, and obtaining a covariance matrix of the bridge load response; calculating an axle load corresponding to the maximum likelihood probability based on the covariance matrix of the bridge load response in combination with the influence line matrix and the bridge load response; and repeating until the difference value between the axle weight updated this time and the axle weight obtained last time is smaller than a preset value, and taking the axle weight updated this time as a final result. According to the invention, the problem of low axle load identification precision of the existing bridge dynamic weighing system is solved.

The invention discloses a sensor calibration test system and a calibration test method for UUV intelligent perception, belongs to the technical field of underwater robots, and aims to solve the problems that the capability evaluation of the UUV intelligent perception system is difficult to realize, the credibility, the reliability and the accuracy are poor, and the UUV intelligent perception system cannot be fully matched with the actual application environment and cannot be optimized due to the existing underwater multi-mode comprehensive perception calibration mode. And the development and improvement of the intelligence of the UUV are directly influenced. The sensor calibration test system can simulate various motion modes of the underwater vehicle and the underwater target in navigation, so that a large number of calibration samples are formed, the three-dimensional imaging sonar, the underwater camera and the magnetometer can realize calibration of working parameters based on the underwater acousto-optic magnetic comprehensive beacon arranged on the underwater target, and the calibration precision is improved. After sensor calibration is completed, the system can be used for testing the calibration effect of the sensor, and the number of times and cost of sea test calibration are effectively reduced.

The invention discloses a lithium ion battery health state estimation method and system based on unsupervised transfer learning and electronic equipment, and the method comprises the following steps: selecting two different types of batteries, and determining a source domain battery and a target domain battery; obtaining a loop test data set, and further obtaining a sample set and a label set; performing data processing on the sample set and the label set to obtain a training verification data set; using the training verification data set to train a domain adversarial neural network model; inputting cycle test data of the battery to be tested into the domain adversarial neural network to obtain an estimation result; according to the method, the cycle test data and the calibration test data of the existing active domain battery and a small amount of cycle test data of the target domain battery without calibration test are utilized, a redundant target domain battery cycle test process is omitted, and accurate estimation of the health state of the target domain battery is realized.

The invention provides a neutron detector sensitivity calibration device and method, and the device comprises a support assembly which is disposed in a reactor core active region and is provided with a second hole channel and a first hole channel; the transmission system is used for connecting a detector to be detected; the signal acquisition device is used for connecting the standard detector and the detector to be detected; wherein the second hole channel is used for accommodating a standard detector; the transmission system is used for transferring the to-be-detected detector to the first hole channel; the signal acquisition device is used for acquiring the current value of the standard detector in the second hole channel and the current value of the to-be-detected detector in the first hole channel. The calibration device is of a self-powered type and does not need external power supply, meanwhile, in the calibration test process, the reactor does not need to be started and shut down, the calibration test can be completed under the condition that other operation tasks of the reactor are not affected, the calibration process does not need waiting, and therefore the test cost is remarkably reduced.

The invention relates to the field of current sensor testing, in particular to a calibration test system for a three-phase TMR current sensor, which is provided with a calibration test mode switching device and organically integrates a calibration mode and a test mode into the same equipment. The current sensors with different compatibility can be calibrated and tested, the accuracy of the calibration and test results of the current sensors is ensured, the research and development efficiency is improved, and the equipment investment is reduced.

A calibration test method based on liquid level scanning comprises the following steps that firstly, a scanning unit is installed on a driving mechanism, and a water tank is placed on a supporting seat located below the scanning unit; after dark liquid is injected into the water tank and the liquid level is calm, a driving mechanism drives a scanning unit to scan and capture a 3D morphology graph of the liquid level, and the graph is analyzed to serve as calibration data D1; a to-be-detected product is placed on a working platform, a driving mechanism drives a scanning unit to scan and capture a 3D morphology graph of the surface of the product, and the graph is analyzed to serve as detection data D2; and finally, calculating a difference value between the calibration data D1 and the detection data D2 by using a system, making a standard 3D morphology graph, and analyzing the graph to obtain distortion data Q1 of the product so as to judge the surface flatness of the product. Compared with the prior art, the method has the advantages that the scanning unit can be calibrated at first, then the calibrated scanning unit is driven by the driving mechanism to obtain the surface contour data of the product, the accurate product torsion resistance is calculated, and the detection accuracy is improved.

The invention relates to the technical field of reflectivity factor testing, and discloses a weather radar reflectivity factor precision calibration testing system, which comprises a radar data acquisition module for acquiring reflectivity factor data and finishing time synchronization by adopting an IEEE1588 protocol; the reference data management module is used for generating an electronic reference data set by utilizing a block chain technology; the calibration processing module is used for performing multi-source joint correction on the reflectivity factor data, the rain gauge data, the standard meteorological target template and the environmental parameters, and outputting the corrected reflectivity data; the precision verification module is used for carrying out real-time precision test on the correction data based on a sliding window, continuously generating test results, forming a precision evaluation vector by adopting weighted average, extracting a quality index to obtain a comprehensive score, and judging whether the correction data is normal or abnormal; and the alarm and report module is used for triggering graded alarm in case of abnormity and generating a calibration certificate and a test report. According to the invention, the precision monitoring capability is improved, manual judgment errors are reduced, and the operation efficiency is improved.

The invention relates to the technical field of heating element detection, and discloses a heating element material testing device and method and a storage medium, and the heating element material testing method comprises the steps: obtaining a testing mode and testing parameters; when a test instruction is received, initial resistance value detection is carried out on the heating body material; and when the heating element material passes the initial resistance value detection, performing a power calibration test and / or a power-on test on the heating element material according to the test mode and the test parameters, and displaying a test result. According to the technical scheme, by flexibly setting the test mode and the test parameters, accurate detection and performance evaluation of the heating element material are achieved, and reliable reference data can be provided for subsequent tests through initial resistance detection; the power calibration test ensures the consistency of the heating body under different power conditions, and the power-on test simulates the performance in an actual working state, so that whether the material of the heating body meets the design requirements or not can be quickly judged, and an efficient and reliable solution is provided for product quality control.

The invention relates to the technical field of highway bridge safety monitoring, in particular to a bridge dynamic weighing algorithm based on Bayesian maximum posterior probability. Obtaining influence lines through a bridge calibration test, and calculating an influence line matrix, a mean value and a covariance; using a Moses algorithm to obtain the vehicle axle load as the axle load of the initial main cycle i = 0; initial axle load distribution is set, the covariance of load response is obtained through the influence line covariance, the measurement noise and the axle load of the main cycle, and an axle load mean vector and a stable value of the covariance are iterated together with the influence line matrix, the initial axle load distribution and the load response to serve as the axle load distribution of the main cycle; according to the axle load distribution, the influence line matrix, the load response and the covariance thereof, the posterior probability of the axle load is obtained, and the axle load when the probability is the maximum serves as the axle load corresponding to the (i + 1) th main cycle; and repeating until the axle load update difference value is smaller than the preset value, and outputting the axle load result, thereby solving the problem of low axle load identification precision of the existing bridge dynamic weighing system.

The invention relates to a calibration method for a quantum inertial navigation system, the quantum inertial navigation system comprises a three-axis atom interference gyroscope and a three-axis atom interference accelerometer, and a calibration test is realized on a three-axis turntable; the calibration method comprises the following steps: according to a rotation scale factor, an output phase noise amplitude and a data updating frequency of the atomic interference gyroscope, calculating a maximum rotation angle acceleration of a Z axis of a rotary table; according to the linear acceleration scale factor, the output phase noise amplitude and the data updating frequency of the atomic interference accelerometer, calculating the maximum rotation angular velocity of the X axis and the Y axis of the rotary table; determining a rotation strategy of the rotary table in the calibration test according to the maximum rotation angular acceleration of the Z axis of the rotary table and the maximum rotation angular velocities of the X axis and the Y axis of the rotary table; according to the rotation strategy of the rotary table, the rotary table is controlled to carry out calibration tests on the atom interference gyroscope and the atom interference accelerometer respectively. According to the invention, the inertial navigation calibration precision of the quantum IMU can be improved.

The invention discloses a calibration test method and system for a pressure sensor, and relates to the technical field of pressure sensor calibration. According to the method, original temperature and voltage data are collected in real time, ideal pressure is obtained through an ideal state equation, original output voltage is obtained through a preset relation model in combination with the temperature, then precise compensation of zero drift and sensitivity drift is completed in sequence through a multi-dimensional calibration coefficient, and further correction is performed through a linear regression relation polynomial, so that the accuracy of the zero drift and the sensitivity drift is improved. And finally, a detection pressure value is obtained. The output pressure value is closer to the real physical quantity, the application requirements of high-precision scenes such as medical equipment are met, and the calibration effect and the pressure measurement precision are improved.

The invention discloses a cable strength detection method and system, relates to the technical field of cable detection, and solves the technical problems that the metal cable detection process is not standard, the defect positioning and quantification precision is low, the contradiction between the non-metal cable detection efficiency and precision is prominent, and microscopic verification is lacked. A high-frequency arc-shaped phased array probe, a bicrystal oblique TOFD probe and an oil-based high-viscosity coupling agent are adopted, a layered focusing technology is combined, laser ultrasonic non-contact detection and ultrasonic microscope high-resolution imaging are adopted for a non-metal cable, and spiral scanning and circumferential fixed-point scanning are combined, so that the defect omission ratio in the circumferential direction is reduced; the abnormal region judgment takes a calibration test block as a reference, the misjudgment rate is reduced, the authenticity is verified through coarse scanning and locking of a core region, fine scanning and acquisition of a high-resolution image and multi-angle imaging, the defect type judgment basis is clear, and the misjudgment rate is reduced.

The invention relates to the field of lithium ion battery health state evaluation, and discloses a lithium ion battery life in-situ rapid prediction method and device, and the method comprises the steps: carrying out a battery capacity calibration test, and obtaining a first calibration capacity Q1 of a battery; installing the battery in a mechanical system of the measuring device, and setting an initial pre-tightening force; standing the mechanical system of the measuring device for a preset standing time, and then testing the capacity calibration of the battery again to obtain a second calibration capacity Q2 of the battery; when the value of Q1 / Q2 is higher than a preset ratio, carrying out charge-discharge circulation on the battery, and in the charge-discharge circulation process of the battery, collecting the pressure change of the battery in the longitudinal direction, namely a pressure change curve of expansion force; and establishing an expansive force change fitting formula in the circulation process according to the pressure change curve of the expansive force, and predicting the service life of the battery according to the relationship between the expansive force and the calibrated capacity of the battery. By using the scheme of the invention, early warning of the advance can be realized, the algorithm is simple, and the applicability is high.

The invention relates to a locomotive coupler calibration test bench, and the test bench comprises a pressurization device which is used for providing the two ends of a to-be-tested coupler with opposite acting forces; the hoisting device is adjacent to the pressurizing device; the protection device is located on the outer side of the pressurizing device, and the protection device is configured to be switched between a first state for shielding the whole area of the pressurizing device and a second state for exposing at least part of the area of the pressurizing device. After the to-be-tested car coupler is hoisted to the pressurizing device through the hoisting device, acting force in opposite directions can be provided for the two ends of the to-be-tested car coupler through the pressurizing device, a conventional mode of applying traction force through locomotive traction is replaced, the force application control precision in the car coupler force calibration process is improved, and then the calibration result precision is improved; and train operation safety is guaranteed. Moreover, in the test process, the precision of the calibration result can be prevented from being influenced by foreign objects through the protection device, and meanwhile, the operation safety of testers is improved.

The invention belongs to the technical field of nuclear material retention volume analysis, and particularly relates to a retention volume acquisition method and device based on Monte Carlo simulation. The method comprises the following steps: according to Monte Carlo calculation requirements, obtaining physical geometric models of a to-be-detected process system and a detector, and completing material modeling; obtaining radiation parameters of retentate in the to-be-tested process system, and establishing a virtual source on the physical geometric model; on the basis of the physical geometric model, Monte Carlo simulation is adopted, and the response coefficient of the detector of the unit mass retentate at the target measurement position is obtained; and obtaining the retention volume of the target measurement position according to the neutron fluence measured by a detector and the response coefficient. The neutron detection efficiency calibration test and the correction analysis process are simplified, the reliability of the retention volume analysis result is improved, and important data are provided for nuclear material closing balance.

The invention discloses a vehicle environment calibration test method based on a plateau environment in a low-temperature scene, and the method comprises the steps: carrying out the basic calibration of a test vehicle through calibration equipment, modifying the exhaust system of the calibrated test vehicle, monitoring the air-fuel ratio and temperature parameters of the modified test vehicle in real time, and carrying out the calibration of the test vehicle. And dynamically testing the modified test vehicle in the plateau low-temperature environment, recording test data, judging whether the test data is starting failure data or not based on the air-fuel ratio and the temperature parameter, and if so, performing parameter optimization on the vehicle calibration data to obtain low-temperature test optimization data. The low-temperature plateau calibration verification link is added in the whole vehicle development stage, so that the product meets the use reliability of scenes at all altitudes and all temperatures, and the cold start problem in the low-temperature environment in the plateau area is solved. And full-temperature scene coverage from the lowest temperature to the highest temperature in the high-altitude area is carried out, so that the reliability of the product in the full scene in the plateau area is ensured.

According to the embodiment of the invention, leakage characteristic data of a plurality of sensors are collected in real time; performing filtering processing on the leakage characteristic data and then determining an area where a leakage source of the vacuum equipment is located; determining the confidence coefficient of the area where the leakage source is located, determining the confidence coefficient of the position of the leakage source based on the confidence coefficient of the area where the leakage source is located, and giving an alarm when the confidence coefficient of the position of the leakage source reaches a confidence threshold value; and injecting helium to the leakage source position of the vacuum equipment in a preset time period to perform calibration test, calculating a calibration error of the leakage source position of the vacuum equipment, and when the calibration error exceeds an error threshold value, recalculating the confidence coefficient of the leakage source position and resetting the confidence coefficient threshold value. The problems of high cost, low detection precision, slow response speed, dependence on artificial experience and incapability of real-time monitoring due to long-time use of a helium mass spectrum detection method when leakage positioning detection is performed on a leakage source of vacuum equipment in the prior art are solved.

The utility model relates to the field of rebound apparatus calibration, and discloses a calibration device for a concrete rebound apparatus, which comprises a bottom plate, side plates and upper surfaces fixed at two ends of the bottom plate, the side wall of the supporting block I is fixed with one group of side plates; one end of the sliding rail is fixed with the side wall of the side plate; the connecting block is movably mounted on the sliding rail; the screw rod is mounted in a threaded hole formed in the top of the connecting block; the pressing plate sleeves one end of the bottom of the screw rod; the guide rods are fixed to the tops of the two sides of the pressing plate. The rebound apparatus is horizontally supported through the first supporting block and the second supporting block, and the pressing plate is pressed on the top of the rebound apparatus, so that the rebound apparatus is in a newspaper clamping state, when the rebound apparatus is subjected to a calibration test, the rebound apparatus can be kept in a stable horizontal state and is kept perpendicular to a steel anvil, and the data accuracy is ensured when the rebound apparatus is calibrated.

The invention relates to multi-range calibration for a single pin parameter measurement unit. A test equipment system may provide a signal to a device under test (DUT), or receive a signal from the device under test (DUT). The test system may include an output stage having an output buffer circuit, which may be controlled locally or externally. An external controller may be used to provide a precision input signal, and in response, to measure current at a DUT interface node of the system, or to measure voltage characteristics of different components within the system. Using the input signal from an external controller, one or more aspects of the test system may be calibrated. For example, a current signal received from an external controller may be used to calibrate the resistance of a sense resistor in the output stage. In another example, a signal from an external controller may be used to determine a buffer offset characteristic to control a local drive circuit of the system.

The invention belongs to the technical field of calibration test, and provides a calibration test system and calibration test equipment, and the calibration test system comprises the calibration test equipment, control equipment and a plurality of to-be-calibrated test products. The calibration test equipment is connected with the control equipment and the plurality of to-be-calibrated test products, and is configured to execute the following steps: responding to a received calibration instruction issued by the control equipment, performing calibration test on the plurality of to-be-calibrated test products at the same time, and respectively obtaining a calibration result corresponding to each to-be-calibrated test product; and the control equipment is configured to execute the following steps: when the calibration result corresponding to each to-be-calibrated test product uploaded by the calibration test equipment is received, displaying the calibration result corresponding to each to-be-calibrated test product in the user interaction interface.

The invention discloses a helium mass spectrometer leak detector test board, and relates to the technical field of helium mass spectrometer leak detector testing, the helium mass spectrometer leak detector test board comprises a test board support and a helium mass spectrometer leak detector, the top of the test board support is provided with a gas supply area and a leakage marking area, a leakage marking assembly is installed in the leakage marking area, and a gas supply assembly is installed in the gas supply area; the leakage marking assembly comprises a communicating pipe seat, a main connecting pipe and an electric proportional valve, the upper side and the lower side of the communicating pipe seat are each provided with a plurality of leakage marking standard parts, the front side and the rear side of the communicating pipe seat are each provided with a plurality of control valves, and the electric proportional valve is arranged at the end of the communicating pipe seat. According to the invention, multiple groups of leakage standard components with different standard leakage rates can be integrated and installed on the test board, the complexity of replacing leakage standard components with different specifications for multiple times by the helium mass spectrometer leakage detector is eliminated, the helium mass spectrometer leakage detector and the test board only need to be in single pipeline butt joint, the problem that the airtightness is influenced by multiple disassembly and assembly is avoided, and the test efficiency is improved. The work efficiency and the test precision of the calibration test of the helium mass spectrometer leak detector can be improved.

The embodiment of the invention discloses a calibration test device for a semi-physical simulation darkroom array antenna and a feed system. The calibration test device is used for carrying out calibration test on the array antenna and the feed system. In one specific embodiment, the calibration test device comprises a calibration computer, a vector network analyzer, a calibration case, a three-axis turntable, a tuner, a signal source and a simulation darkroom. According to the method, the problem of calibration work of the array antenna and the feed system of the semi-physical simulation radio frequency darkroom under the low-frequency condition is solved, design experience is provided for construction of the low-frequency simulation darkroom, and preconditions are provided for semi-physical simulation test application requirements developed in a laboratory.