322 results about "Safety testing" patented technology

The invention provides a multi-mode ultrasonic fusion pressure vessel weld defect nondestructive testing method and system, and relates to the technical field of nondestructive testing. According to the method, geometric parameters of a welding seam are obtained through three-dimensional laser scanning, and an optimal scanning parameter set is generated; driving ultrasonic phased array equipment to scan for one time and synchronously acquire shear wave full-matrix capture and longitudinal wave linear scanning data; performing energy flow angular spectrum analysis and envelope analysis on the bimodal data, extracting defect feature parameters and constructing a three-dimensional feature tensor; carrying out multi-dimensional feature fusion by adopting Tucker decomposition, and enhancing a core tensor through physical modeling; generating three types of defect indication diagrams including a defect existence possibility diagram, a defect relative scale diagram and a defect space orientation diagram from the enhanced feature tensor; and the three types of indication diagrams are visually presented for comprehensive interpretation of detection personnel. Through multi-modal data fusion and physical modeling enhancement, the defect identification accuracy and detection efficiency are remarkably improved, the false alarm rate is reduced, and reliable technical support is provided for pressure vessel welding seam safety detection.

The invention relates to the technical field of new energy battery testing, and discloses a new energy battery safety testing system and method, and the system comprises a multi-physical field synchronous collection and analysis module which is used for synchronously collecting electric signals, temperature field distribution and stress-strain data in a battery testing process, and carrying out the multi-field coupling analysis; a self-adaptive test parameter regulation and control module; the thermal runaway risk prediction module is used for analyzing and predicting the risk probability and residual safety time of thermal runaway of the battery based on multi-parameter fusion; the microstructure-macroscopic performance correlation analysis module is used for acquiring microstructure information of the battery through nondestructive testing and establishing a correlation model with macroscopic safety performance, and the new energy battery safety test system realizes collaborative analysis of multiple parameters of electricity, heat and force through the multi-physics field synchronous acquisition and analysis module; the safety state of the battery can be reflected more comprehensively, and the defect that a traditional testing method is single in dimension is overcome.

The invention relates to the technical field of agent testing, and particularly provides an agent dynamic behavior safety testing method and system based on a risk conduction quantification model, and the method comprises the steps: collecting agent behavior data which comprises a plurality of pieces of risk operation information and a risk association relationship; constructing a behavior risk association map by taking the risk operation as a node and the association relationship as an edge, labeling a risk attribute and an aging factor for the node, and labeling risk conduction intensity for the edge; constructing a risk rule base based on the risk labeling result and a preset risk judgment logic; inputting the behavior data, the behavior risk association map and the rule base into a trained quantitative model, and calculating a risk conduction probability, an influence range and a critical node; monitoring a behavior track in real time, suspending a task when a multi-dimensional risk threshold is triggered, backtracking an inference chain and generating an intervention record; and fusing the multi-dimensional data to generate a test report. According to the method, the problems of correlation risk missed judgment and response lag in the traditional test are solved, and the pertinence and reliability of the safety test are improved.

The invention relates to a hydroelectric main shaft all-condition simulation test system and method, and the system comprises a fixed rack, one side of the fixed rack is provided with a tripping starting detection device, the fixed rack is provided with a hollow three-axis platform, a three-axis excitation system and a rotation driving part, the moving end of the three-axis platform is connected with a hollow floating rack, and a bearing is disposed in the floating rack. The rotation driving part comprises a power part and a main shaft connected to the torque output end of the power part, the main shaft is in transmission connection with the rotating disc, a hydroelectric large shaft used for a simulation test is installed on the rotating disc, and the three-shaft excitation system is used for applying X-direction, Y-direction and Z-direction high-frequency sine excitation loads to the hydroelectric large shaft of the rotating disc. The device is used for overcoming the defects that an existing testing device mainly focuses on vibration loading of a static mechanical device, simulation and performance testing cannot be carried out on dynamic behaviors under the composite working conditions of rotation, vibration and impact of a hydroelectric large shaft, and safety testing and rating cannot be carried out on a hydroelectric generating set sensor and a tripper overspeed protection device.

The invention discloses a vehicle testing method and device, a processor, a vehicle and a storage medium. The method comprises the steps that original scene information of a to-be-tested vehicle is acquired; the original scene information is reconstructed to obtain first reconstructed scene information, and the first reconstructed scene information is used for representing virtual video data of the reconstructed real driving scene; based on original driving information of the to-be-tested vehicle, the first reconstructed scene information is adjusted to obtain second reconstructed scene information, and the original driving information is used for representing driving parameters of the to-be-tested vehicle driving in the real driving scene; and testing the to-be-tested vehicle driving according to the original driving information by using the second reconstructed scene information to obtain a test result of the to-be-tested vehicle. The technical problem that the safety test efficiency of the vehicle in the intelligent driving mode is low is solved.

The invention discloses a position detection and cheating device and method for an unmanned aerial vehicle, and the device integrates a position information obtaining module, a GNSS signal receiving module, and a GNSS cheating signal generating and transmitting module, obtains the position of the unmanned aerial vehicle through a Wi-Fi network card or a Bluetooth receiver, and a USRP B210 device and related software collects and processes a GNSS signal and generates a cheating signal. The method comprises three processes of unmanned aerial vehicle position information detection, real GPS signal receiving and position deception signal generation, and the safety of the unmanned aerial vehicle is evaluated through multi-link analysis, signal receiving and simulation signal generation and emission. The unmanned aerial vehicle position and the GPS signal can be acquired in real time, the authenticity of the deception signal is improved, and the test effectiveness is enhanced; and the device has the advantages of high simulation degree, high precision, simplicity and convenience in operation, low cost and the like, and an efficient scheme is provided for unmanned aerial vehicle position safety testing and anti-deception capability evaluation.

The invention relates to the technical field of safety testing, and particularly provides a method, device and equipment for generating an expected function safety testing scene library, and the method comprises the steps: obtaining a parameter combination of key parameters in a pre-constructed basic scene; wherein the key parameters comprise environment parameters, traffic dynamic parameters and vehicle system parameters; generating a plurality of test scenes based on the parameter combination; after screening the plurality of test scenes, constructing a test scene library; wherein the test scene library is used for an expected function safety test of the intelligent driving vehicle. According to the embodiment of the invention, a rich expected function security test scene library can be constructed, and support is provided for expected function security test.

The invention discloses a transformer arc fault equivalent test device and a control method, and relates to the technical field of power equipment fault simulation and safety test, and the method comprises the steps: carrying out the corresponding high-pressure gas storage through a high-pressure gas storage unit according to target pressure data calculated by a choking flow dynamic coupling model; the quick release unit is used for matching fault duration according to the test trigger instruction so as to release the high-pressure gas stored in the high-pressure gas storage unit; the energy injection unit injects high-pressure gas into the test oil tank to form shock waves; the safety protection unit starts an interlocking protection mechanism based on the test data; the monitoring control unit controls each unit to act, monitors the operation process of each unit in real time, and obtains and identifies the validity of test data to optimize the test process; according to the invention, automatic test process control is realized, the arc fault key damage effect can be accurately quantified and reproduced, high-precision matching of pressure wave time domain characteristics is realized, and the reliability of a test result is ensured.

According to the penetration test system and method for the vehicle-mounted controller, various types of communication interfaces and equipment interfaces are integrated in the industrial personal computer, so that the rigid requirements for communication configuration in various test scenes are met. Furthermore, through division of a bus security test module, a system security test module and a communication security test module, each module can independently construct connection with a target vehicle-mounted controller based on a Vector tool chain, an ADB / SSH, a wireless network card and a Bluetooth adapter, parallel execution of multiple test cases is supported, and the test cases do not interfere with one another; and synchronous promotion of safety tests such as bus diagnosis, system login, wireless communication and the like is realized. The upper computer serves as a control core and can automatically drive any module or multiple modules to work cooperatively according to the target test case, and test instructions are issued in a unified mode through the VT test system, so that the test preparation time and the execution period are greatly shortened, and the effect of improving the penetration test efficiency of the vehicle-mounted controller is achieved.

The invention discloses an energy storage black-start load identification method based on dynamic response and related equipment, and aims to solve the technical problem of high secondary collapse risk of a system caused by blind closing and power transmission of an unknown load in an energy storage black-start process in the prior art. According to the method, before formal switching-on power transmission, customized safety test pulses are generated through a pulse parameter model according to physical parameters of a power line, and dynamic response signals of loads are collected and analyzed, so that prospective recognition of the health states of the loads is achieved. According to the method, the load recovery in the energy storage black start is changed from blind closing to a controllable process of first diagnosis and then power transmission, so that the risk of secondary collapse of the system due to fault load access is fundamentally reduced.

The invention relates to the technical field of intelligent network connection automobile testing, in particular to a foggy day simulation control method and system for a vehicle expected function safety test, and the method comprises the following steps: S1, setting a target visibility value and a visibility deviation threshold value; s2, acquiring measurement values of a plurality of visibility sensors arranged in the test tunnel along the driving direction in real time, and acquiring a real-time water pressure value of a pressure sensor in a water supply main pipeline of the atomization unit; s3, comprehensively analyzing the measured values of the plurality of visibility sensors, and determining the current average visibility; s4, comparing the target visibility value with the current average visibility, and determining the visibility deviation; s5, executing a hierarchical control strategy according to a comparison result of the visibility deviation and a threshold value; and S6, circularly executing the steps S2 to S5 until the simulation test task is finished. According to the invention, a control logic of closed-loop feedback and hierarchical decision is constructed, and a reliable environment reference is provided for SOTIF testing.

The invention provides a security test method and system for an industrial control embedded system. The method comprises the following steps: acquiring CFG of an industrial programming client; generating a plurality of target test cases based on the CFG, and inputting the target test cases into the industrial programming client; generating an STG of the industrial control embedded system based on the target test case and the target result information; generating a supplementary test case outside the target test case based on the STG, and inputting the supplementary test case into the industrial programming client; and determining whether the industrial control embedded system has a security problem according to the target test case, the target result information, the supplementary test case and the supplementary result information. According to the technical scheme, various contents capable of interacting with the industrial control embedded system are obtained, the STG is generated according to the test result information in combination with the test case, some running states of the industrial control embedded system can be obtained, the supplementary test case is generated, and the accuracy of safety detection of the industrial control embedded system is improved.

The battery clamp provided by the utility model comprises the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate are oppositely arranged, the accommodating space is defined between the first clamping plate and the second clamping plate, and the strain sensor is arranged in the accommodating space; and the strain sensor can collect stress data of each point location of the stress part of the battery. Thus, when the battery is clamped and fixed, the clamping force of the clamp can be adjusted according to the stress data collected by the strain sensor, and it is ensured that the battery is in a stress balance state when the battery is clamped and fixed. Besides, in the safety test process, the strain sensor can continuously collect stress data, so that the expansion force value corresponding to each point position of the battery can be calculated through the stress data, collected in the test, of each point position of the battery, and data reference is provided for battery and module design.

The invention discloses a lithium ion battery thermal runaway gas-liquid-solid multiphase jet simulation device and method, and belongs to the technical field of battery safety testing. The device comprises mixed gas, high-temperature steam and dust sampling pipelines which are arranged in parallel and converged to a nozzle, a closed reaction container provided with an environment regulation and control system, a system for ignition and multi-parameter monitoring and a master control system. According to the method, multi-phase medium parameters and a container environment are set through general control, and the whole process of environment creation, multi-phase jet injection, ignition and data acquisition is automatically completed. According to the invention, the defects of high cost, high risk, poor repeatability and incapability of independently regulating and controlling multiphase components caused by dependence on a real battery in the prior art are overcome, the complex multiphase jet combustion behavior can be safely, accurately and repeatedly simulated, and a key experimental platform is provided for quantitative research on thermal runaway flame characteristics and a prevention and control technology.

The invention relates to the technical field of power supply testing, and discloses a power supply system automatic testing system based on an aging test. The system comprises a data perception module, a state path generation module, a path cross analysis module, a state judgment module, a decision-making module, a control module and a test output module. The data sensing module obtains multi-source test data, extracts features and constructs a test original sequence template; a state path generation module constructs a feature directed path and state path structure; the path cross analysis module screens cross paths to obtain a test cross path set; the state judgment module matches the path end point label and generates a power system state affiliation label group; the decision-making module performs risk assessment and prediction according to the results to obtain an aging state prediction result and a safety test threshold value; the control module adjusts test parameters and controls the equipment according to the parameters; and the test output module generates a test report. According to the system, multi-source data acquisition, accurate state judgment and automatic control are realized, and the test process is optimized.

The invention relates to the technical field of automobile passive safety testing, discloses a method for selecting a barrier avoidance rigid channel based on curve characteristic inflection points, and aims to solve the problems of inaccurate result and tedious operation caused by dependence on manual subjective judgment in an existing method. The method comprises the following steps: preprocessing and normalizing an original force-displacement curve of a counterguard dynamic experiment, and filtering to generate a baseline; calculating the offset of the curve and the baseline, and superposing the weight to generate and filter the upper and lower envelope lines; determining a feature inflection point based on the baseline second derivative extreme point, segmenting an envelope line according to the inflection point, and fitting a straight line by a least square method; and introducing a linear offset parameter fine-tuning fitting line segment, correcting a calibration point force value, and then connecting to form a rigid channel. The method realizes channel selection automation, reduces subjective errors, improves channel precision and efficiency, and is suitable for a barrier wall rigidity evaluation scene in a vehicle collision test.

The invention discloses a hydrogenation equipment explosion-proof safety system and an evaluation method, and belongs to the technical field of hydrogenation equipment explosion prevention. The hydrogenation equipment explosion-proof safety system comprises a modular test unit, an integrated control unit and an explosion-proof safety guarantee unit; the modular test unit is divided into a hose safety test module and a complete machine sealing verification module; the hose safety test module is internally provided with a fracture simulation subunit and a separation tension subunit, and the fracture simulation subunit simulates a hose fracture working condition through instantaneous pressure relief of a quick-opening valve and triggers an automatic shutdown mechanism; the separation tension subunit is provided with a stepping tension loading mechanism, and pressure dynamic response during separation of the break-away valve is monitored in real time; according to the method, through innovative means of simulating a real dynamic working condition, inhibiting environmental interference, adapting equipment scale, optimizing resource utilization and the like, the defects of an existing evaluation method in the aspects of authenticity, interference inhibition and universality are overcome.

Safety test results generated in a safety testing system 31 are displayed to an operator for input, by receiving the results at a server 34; using a high integrity safety test reporting system 32 hosted thereon to pre-filter the results into a log file; passing the log file to a low integrity report viewer (e.g. commercial off-the-shelf (COTS) viewer or browser 35) embedded in the server; and operating the reporting system and viewer with a display device 33 to display the log file to an operator for input. The server may be cloud-based. The test results may relate to a rail infrastructure safety system 39,40. The safety test reporting system may meet EN 50129 SIL4 requirements whereas the report viewer need not meet any SIL requirements.

The invention discloses a large model security test method and device and a computer program product, and the method comprises the steps: firstly, screening out a target starting node with the highest semantic similarity with a target malicious query text from a pre-constructed state diagram database, and then when the value of the highest similarity is higher than a preset threshold value, starting the target malicious query text; a path multiplexing mode is adopted, a complete test path corresponding to the target starting node is directly multiplexed to test the target large model, and when the value of the highest similarity is not higher than a preset threshold value, a path exploration mode is adopted to search the target large model; and a new test path is generated by using a test strategy library, a guide large model, an attack large model and the like for testing (and is stored for subsequent direct multiplexing), so that effective accumulation and intelligent multiplexing of historical experience are realized, and repeated exploration is avoided. Compared with existing testing methods such as a static template, the testing efficiency is continuously improved along with experience accumulation, a complete closed loop of self-evolution is formed, and an ideal testing effect is achieved.

The invention relates to the technical field of battery testing, and discloses a battery safety testing system which comprises a dynamic loading system used for performing safety testing on a to-be-tested battery according to a target testing instruction; the central control system is connected with the dynamic loading system and is used for searching corresponding target test data from a pre-established standard file according to the battery type of the battery to be tested and the current test type, generating a corresponding target test instruction from the target test data and sending the target test instruction to the dynamic loading system; the standard file comprises test data in one-to-one correspondence with different battery types under different test types, and the test data comprises test parameters and test tool parameters. Therefore, the consistency of each test can be effectively kept, and the comparability of test results is improved. Meanwhile, the automation level and the intelligence level of testing can be improved, the testing efficiency and accuracy are improved, and errors caused by manual operation are reduced.

The invention belongs to the technical field of high-pressure gas safety testing, and particularly relates to an integrated control device for an anti-ignition test of an oxygen pressure reducer. Comprising a first pneumatic valve, a preheating device, a steel seamless gas cylinder, a temperature sensor, a temperature controller, a digital pressure gauge, a second pneumatic valve, a pressure transmitter, a pressure gauge, an oxygen filling port, a connector, an EX electric valve and a computer, the steel seamless gas cylinder is arranged in the preheating device, and the temperature controller is placed in the preheating device; one end of the first pneumatic valve is a gas inlet end, and the other end of the first pneumatic valve is communicated with the input end of the steel seamless gas cylinder; the output end of the steel seamless gas cylinder is connected with one end of a second pneumatic valve, and the other end of the second pneumatic valve is connected with an oxygenating port of the tested piece; the joint of the tested piece is connected with the EX electric valve; and the first pneumatic valve, the second pneumatic valve, the digital pressure gauge, the pressure transmitter, the EX electric valve, the temperature sensor and the temperature controller are connected with a computer.

The invention discloses an automatic large language model security test method and device, a server and a storage medium, and belongs to the technical field of networks. According to the method, a successful attack result is converted into jailbreak experience, the experience is grouped according to jailbreak drift semantics, and then a representative jailbreak mode and target experience are extracted according to the historical success rate of each group. In the testing process, the experience is used for carrying out safety testing on the large language model, and the target experience is dynamically updated according to the testing result, so that the testing efficiency and accuracy are improved. According to the method, the redundancy optimization problem in a traditional method is effectively eliminated, the security test can be flexibly coped with in different scenes, and the security of the large language model and the feasibility of the test are improved.

A battery bending test system includes a fastening device having an inclined surface configured to hold a battery; a pressing device configured to press the battery to bend; and a load-bearing device configured to bear the fastening device, the load-bearing device having a reference surface for bearing the fastening device. A first angle Ø is formed between the inclined surface and the reference surface. The range of the first angle Ø is 0°<Ø<90°. The battery bending test system and method can precisely control the bending angle and bending morphology of the battery, and reasonably evaluate the safety performance of the battery when subjected to the bending force, thus meeting expectations of the safety test.

The utility model relates to the technical field of new energy battery detection, and provides a new energy battery safety detection device which comprises a safety detection explosion-proof box, the left side and the right side in the safety detection explosion-proof box are respectively provided with an explosion-proof buffer assembly, and the bottom of the safety detection explosion-proof box is provided with a pressing test piece. The new energy battery safety detection device can effectively simulate external force possibly borne by the battery in different environments, and comprehensive safety detection of the battery is achieved through the anti-explosion design and the buffer assembly. The application value in the new energy battery safety test is remarkable, and powerful technical support is provided for research, development, production and safe use of the battery.

The invention relates to the technical field of ship power device fault diagnosis, and discloses a marine gas turbine plasma ignition layering fault troubleshooting method, which comprises the following steps: aiming at the characteristics of a plasma ignition system double-loop structure in a severe ship environment, firstly constructing a special safety test environment consisting of an insulating box body and an observation window; determining that the basic energy is normal by measuring primary electrical parameters; based on the core thought of a control variable method, a hierarchical cross-exchange test process for an aviation plug interface and an igniter body is designed, and a complete decision tree model is constructed by comparing logic changes of ignition states before and after exchange, so that a fault source is accurately isolated from a control board card, an ignition cable or an igniter; according to the invention, an experience-dependent troubleshooting process is converted into a standardized and visual technical operation process, and finally, the problems of low troubleshooting efficiency, high safety risk and great dependence on personnel experience in the prior art are effectively solved.

The application relates to the technical field of nuclear power plant safety testing, and particularly relates to a method for calculating the value of a control rod by a falling rod method and a device and an electronic device thereof, which comprises the following steps: acquiring the initial time t0 of a to-be-tested control rod before falling rod starts, the neutron flux density n0 corresponding to the initial time t0, the time t1 of falling rod ending, the neutron flux density n1 corresponding to the time t1, and the second neutron flux density n2 corresponding to any time t2 after the falling rod ends; calculating the period T1 of the time after the falling rod; and calculating the value |p1| of the to-be-tested control rod. In the application, the optimized formula simultaneously considers the influence of prompt neutrons and delayed neutrons, so that the measurement error of the falling rod method can be significantly reduced.

The invention relates to the technical field of automatic driving man-machine interaction and safety testing, in particular to an automatic driving takeover scene disturbance modeling and virtual-real confrontation generation method, which comprises the following steps of: acquiring multi-modal data when a driver executes an intelligent cockpit interaction task, establishing a cognitive load quantification system and an information channel model, and establishing an information channel model; generating a high-order human-intelligent interaction normal form; evaluating and constructing a strong interaction takeover scene, and establishing a directed heterogeneous graph for describing a disturbance relationship between scene elements and driver takeover behaviors; and constructing a basic scene database and a cooperative disturbance generation channel, generating targeted adversarial scene data, and performing redundancy screening, physical authenticity verification and virtual-real fusion proportion optimization on the targeted adversarial scene data to form a completely labeled virtual-real fusion takeover scene data set. According to the method, the problem of insufficient automatic driving takeover safety test caused by poor interaction adaptability, high cognitive load and scarcity of scene samples in a traditional method is solved, and the driving safety and the interaction experience are improved.

This invention discloses a dynamic response-based load identification method and related equipment for energy storage black start, overcoming the high risk of secondary system collapse caused by blindly closing the circuit to unknown loads during the energy storage black start process. This method generates customized safety test pulses based on the power line physical parameters using a pulse parameter model before formally closing the circuit to power, and collects and analyzes the dynamic response signals of the load to achieve proactive identification of the load's health status. This invention transforms load recovery during energy storage black start from blind closing to a controllable process of diagnosis before power supply, fundamentally reducing the risk of secondary system collapse due to faulty load access.

The utility model discloses electric appliance safety test equipment, which relates to the technical field of electric safety test and comprises a bottom plate, a protective shell, a quick release mechanism and a clamping mechanism. The protective shell is fixedly arranged at the top of the bottom plate, and the top of the bottom plate is fixedly connected with a workbench; the quick dismounting mechanism is fixedly arranged on the inner surface of the protective shell and is used for quickly mounting and dismounting the protective shell; the clamping mechanism is fixedly arranged on the inner surface of the testing support and used for clamping the electrical element. According to the utility model, the locking block is aligned with the sliding groove of the workbench, and the first wedge block is inserted into the sliding groove of the locking block after being extruded by the sliding groove due to the design of the pressurizing slope and compresses the spring. And then the spring is reset, so that the first wedge-shaped block is limited and fixed in the sliding groove of the workbench. During unlocking, the locking button is manually pressed, the button pushes the insertion rod to move, and the insertion rod pushes the first wedge block back into the locking block.

The invention belongs to the technical field of battery detection, particularly relates to a simulation battery liquid leakage detection method, and belongs to the technical field of battery safety testing. The method comprises the following steps: S1, manufacturing tiny opening simulation liquid leakage points at corners of the bottom of a battery; s2, after polishing the contact surface of the liquid cooling plate, placing a battery, and forming electric connection between a battery shell and the liquid cooling plate through electrolyte; s3, in a set test period, the insulation resistance of the positive electrode and the negative electrode of the battery to the liquid cooling plate is measured regularly, and electrolyte is supplemented; s4, evaluating the insulation failure risk according to the insulation resistance data, the long-term and dynamic influence of battery leakage on the insulation performance of the liquid cooling system can be actively and truly simulated, the detection result is accurate and reliable, and an effective experimental means is provided for safety design and risk evaluation of the battery system.