48 results about "Injection test" patented technology

The invention discloses an electromagnetic pulse coupling signal separation method based on optimized variational mode decomposition, and belongs to the field of signal processing. The method comprises the following steps: carrying out injection test on an engine rotating speed control system shielding wire harness, and constructing an electromagnetic pulse coupling signal data set; a population initialization process of a parrot algorithm is improved by adopting spatial pyramid matching chaotic mapping, population diversity is improved by utilizing uniform ergodicity and initial value sensitivity of a chaotic sequence, and premature convergence is avoided; a mirror reflection learning strategy is introduced to improve the optimization precision and convergence speed of the parrot algorithm; optimization is carried out by using input parameters of improved parrot optimization variational mode decomposition, and mode decomposition is carried out on electromagnetic pulse coupling signals of a rotating speed control system; and calculating a kurtosis factor of each intrinsic mode function, and selecting a reconstruction target signal of the intrinsic mode function with the minimum kurtosis factor. According to the method, efficient and accurate electromagnetic pulse coupling signal separation can be realized, and the stability and reliability of the system in a strong electromagnetic interference environment are improved.

The invention relates to the technical field of artificial intelligence and information security, provides a cue word injection attack detection method and device of a large language model, equipment, a storage medium and a program product, and has a better cue word injection attack detection effect. The method comprises the following steps: generating cue words from preset test corpora, and inputting the cue words into a first large language model; the test corpus generation cue word is used for indicating the first large language model to generate a cue word injection test corpus in combination with multiple cue word injection modes for each cue word injection attack type; the cue word injection test corpus is input into the to-be-tested large language model, and an input and output data pair is obtained according to response content output by the to-be-tested large language model; and calling the second large language model to detect whether the to-be-detected large language model is successfully attacked according to the input and output data to obtain a target detection result aiming at the cue word injection attack.

The invention discloses a flash memory error injection test method and electronic equipment, and relates to the technical field of error injection test.The flash memory error injection test method comprises the steps that by means of the inherent physical characteristic, namely, the write-in characteristic, of an NAND flash memory, different data are written in the same position of a target block in the flash memory at least twice, the number of free electrons of a floating gate of the flash memory is interfered from the physical level, and the number of the free electrons is increased; according to the method, the internal data error of the flash memory is caused, and a physical abnormal scene of the flash memory is constructed, so that the read-write error test of the flash memory is realized, a technician can conveniently and timely find out the problem exposed in the test process of the flash memory, and the fault risk after mass production is reduced.

The utility model relates to a fault detection device, in particular to a fault detection device for a pulse valve of a dust remover, which comprises a casing, a controller, an air inlet, a blowing air bag, a pressure sensor, a pulse valve and the like. An air purifying mechanism used for filtering dust and air is arranged in the machine shell, a blowing pipe is fixedly connected into the machine shell, a blowing air bag is installed on one side of the machine shell, an air inlet is formed in the bottom of the blowing air bag, a pulse valve is arranged at an air outlet of the blowing air bag, and one end of the pulse valve extends into the machine shell and is connected with the blowing pipe. A pressure sensor is installed at one end of the blowing air bag, and the sensing end of the pressure sensor extends into the blowing air bag. According to the utility model, the controller is used for carrying out continuous two or more injection tests on the pulse valve, whether the pulse valve has faults can be accurately judged by comparing test data, meanwhile, manual intervention is reduced, and the detection efficiency is improved.

The application provides a message error injection method and device based on an IB protocol, and the method comprises the following steps: configuring an error injection mode in an error injection register according to a test target; when the error injection mode is configured as a free error injection mode, configuring an error injection switch, an error injection randomness and an error injection message domain segment value, and configuring the error injection switch as starting; when the error injection mode is configured as a protocol error injection mode or a retransmission check mode, directly configuring the error injection switch as starting; based on the configuration information of the error injection register, performing error injection test on a detected IB message, and reading the error injection register after the error injection is completed to query error injection test execution information. The scheme provided by the application improves the convenience and authenticity of message error injection.

The application discloses a land full-scale diesel engine exhaust spraying test system, which comprises a flue gas generating device, an exhaust pipe, a spraying cooling system, a side simulation structure, a sailing wind simulation device, a waste water collecting pool and a monitoring mechanism; the flue gas generating device comprises a same type diesel engine as actually used by a ship; the exhaust pipe is arranged according to the actual exhaust pipeline of the ship; the exhaust spraying device of the spraying cooling system is arranged on the straight pipe of the exhaust pipe; the side simulation structure is arranged at the exhaust port of the exhaust pipe; the sailing wind simulation device is arranged at the side of the exhaust port of the exhaust pipe; the waste water collecting pool is arranged below the exhaust port of the exhaust pipe; the data control box of the monitoring mechanism receives the data of temperature sensors, pressure sensors and flow meters and transmits the data to an upper computer; and according to the received data, the spraying cooling system is controlled to work. The application can accurately simulate the exhaust working condition of the diesel engine of the ship and obtain accurate exhaust spraying effect data.

The utility model belongs to the technical field of test pit water injection test equipment, and discloses a test pit water injection test device capable of preventing external interference, the test pit water injection test device comprises a protection assembly and a test assembly, the protection assembly comprises a side enclosure frame and a cover plate, and the side enclosure frame forms a test area; one ends of the two cover plates are detachably connected with each other; the test assembly comprises a support, a water supply bottle and an iron ring piece. The two ends of the support are detachably connected with the two opposite sides of the side enclosure frame respectively. At least one water supply bottle is inversely arranged on the support, a water level gauge is arranged on the water supply bottle, and a water outlet of the water supply bottle is connected with the iron ring piece through a water pipe; the iron ring piece is arranged below the support and connected with the support through the connecting rope. The protection assembly is arranged on the test assembly, so that a wind-proof and external interference protection cover does not exist during construction site and field work; the problems that the amount of water permeating into soil cannot be accurately measured and recorded due to excessive water loss or great influence of environmental factors, the permeability coefficient of the soil is difficult to accurately measure, and the requirements on measurement precision and efficiency cannot be met in the prior art are solved.

The invention provides a puncture device for a pharmaceutical injection test, and relates to the technical field of medical experiments, the puncture device comprises a base mechanism, the base mechanism is fixed on a forearm of a non-human primate experiment body through a first medical adhesive tape and a second medical adhesive tape, and the base mechanism is fixedly provided with an injection tube through a locking mechanism; a middle connecting pipe is installed at one end of the injection pipe, a separation non-return hose is inserted into the end, away from the injection pipe, of the middle connecting pipe, and a needle mechanism is fixedly installed at the end, away from the middle connecting pipe, of the separation non-return hose. Through the cooperation of the base mechanism, the first medical adhesive tape, the second medical adhesive tape and the silica gel pad, comfortable and stable attachment of the device to the forearm of an experimental body is achieved, pulling caused by animal movement is effectively resisted, and through rigid locking of a threaded inclined plate and a fastening nut of the locking mechanism to an injection tube clamping convex ball, the clamping convex ball can be locked more firmly. And the reliability of connection between the infusion tube and the middle connecting tube is further ensured.

The utility model provides refrigerant poisoning and oil injection test equipment, which relates to the technical field of sensor detection, and comprises a base, a test barrel is mounted at the top end of the base close to the left side, a control box is mounted at the top end of the base close to the right side, a controller is mounted in the control box, a support is welded at the top end of the control box, and the support is welded at the top end of the control box. A mixing tank is installed at the top end of the support, a drawing box is installed at the position, close to the bottom, of the left side of the test barrel, a plurality of fixing grooves are formed in the top end of the drawing box and located in the test barrel from left to right at equal intervals, and clamping pieces are symmetrically installed on the left side and the right side in each fixing groove; springs are fixedly connected between the outer sides of the clamping pieces and the inner walls of the fixing grooves, the refrigerant sensor is sent into the test barrel by pushing the drawing box, the refrigerant sensor can be taken without opening the sealing cover, and compared with a traditional installation mode, the use convenience is greatly improved, and the use experience feeling is effectively improved.

The application discloses a puncture device for pharmaceutical injection test and belongs to the technical field of medical devices. The puncture device comprises a support plate, a connecting pipe which is slidably connected to the support plate, a puncture needle which is installed at one end of the connecting pipe close to the support plate, a liquid storage cavity which is arranged in the connecting pipe, the liquid storage cavity of the connecting pipe being communicated with the puncture needle, symmetrically distributed connecting rods which are fixedly connected to one side of the support plate away from the connecting pipe, the axis of the symmetrically distributed connecting rods and the axis of the connecting pipe being located on the same plane, and a positioning plate which is hingedly connected to the symmetrically distributed connecting rods, and the positioning plate is provided with a through hole. In the puncture process, the positioning plate is used for extruding, stretching and pressing the skin at the puncture position of the patient, the position stability of the connecting pipe and the puncture needle is maintained, the direction guidance is provided for the connecting pipe and the puncture needle, the puncture needle is more stable in the moving process, and the stability of the puncture needle in the puncture process is improved.

The invention discloses a post-processing efficiency monitoring model building method, which relates to the technical field of engine post-processing, and comprises the following steps: through monitoring data of a front NOx sensor and a rear NOx sensor, generating front NOx initial monitoring data and rear NOx initial monitoring data, collecting exhaust temperature data and urea injection amount data, identifying and generating vehicle state data, and establishing a post-processing efficiency monitoring model according to the vehicle state data. Judging whether the post-processing system state meets a setting trigger state or not; if yes, whether the vehicle state data meet the set state condition or not is judged through the ECU; if yes, injection testing is carried out, and ammonia gas is filled into the SCR catalyst, so that the SCR catalyst reaches the maximum ammonia storage state; according to the post-processing efficiency monitoring model building method, through pre-fault analysis, condition judgment, injection testing, injection stopping testing, efficiency calculation and fault judgment, the technical defects of a rear NOx sensor are avoided, the fault recognition accuracy is greatly improved, and the influence of ammonia leakage is eliminated.

The utility model discloses a desulfurization slurry jet test device of wet desulfurization process, including test tank, and intake pipeline and exhaust pipeline connected to the test tank, the inside of test tank is connected with annular pipe, the annular pipe is connected with a plurality of nozzles, and the liquid inlet end of annular pipe is connected with pressure regulating mechanism, and the pressure regulating mechanism is connected with the pressure regulating mechanism. The pressure adjusting mechanism comprises a pressure adjusting box, an air cylinder, two connecting plates, two gears, a toothed plate and two baffles, the air cylinder is connected to the end of the pressure adjusting box, the power output end of the air cylinder is connected with the toothed plate, the toothed plate is used for driving the two gears to rotate synchronously, the liquid discharging end of the pressure adjusting box is communicated with the annular pipe, and the annular pipe is communicated with the air cylinder. And the liquid suction end of the infusion pump is connected with the liquid supply unit. According to the utility model, the amount of liquid flowing into the liquid conveying pipeline can be adjusted, so that the spraying pressure can be controlled to adapt to flue gas with different flows, the saving effect is achieved, and the waste of slurry is avoided.

The application provides a kind of small rotary casing class parts multifunctional test device and use method, it is related to test device technical field, the main body mechanism of the present application includes base, two bending handles are fixed on the left and right sides of base by screw, the right side of base is fixed with support plate by screw, and round hole is opened on support plate for placing flow direction test mechanism and atomization test mechanism.The application integrates the main body mechanism, flow direction test mechanism and atomization test mechanism, realizes the effective flow direction test of small rotary casing class parts, nozzle total flow test, atomization injection test and gas circuit oil circuit cross test and other multiple functions on the same set of device, without replacing multiple sets of test equipment, significantly reduces the equipment investment cost and site occupation area, simplifies the test process, avoids the repeated disassembly and repositioning of parts, effectively reduces the risk of damage caused by multiple clamping of parts, greatly improves the test efficiency.

A method for synchronizing an internal combustion engine in a hybrid vehicle with an electric motor is proposed, comprising the following steps: applying an initial rotational speed setpoint to the electric motor (typically 2500 rpm), then synchronizing the internal combustion engine using the rotational signals from the camshaft and crankshaft. In the event of a camshaft signal failure, an initial position assumption for the internal combustion engine is selected from several possibilities, and injection tests are performed by adjusting the rotational speed setpoints. Once the idle speed setpoint is reached, the rotational speed setpoint of the electric motor is reduced to a new value (typically 2000 rpm). If the assumption is validated, the speed setpoint process is stopped; otherwise, another assumption is tested until a validation is achieved.

The utility model discloses a fire extinguisher injection test device, which comprises a mounting plate, a fixing plate and a test plate fixedly connected with the mounting plate, an injection pipe and a graduated scale are arranged on the upper surface of the test plate, and a pressure detection module for detecting pressure is arranged on the upper surface of the test plate; a clamping assembly used for clamping fire extinguishers of different sizes is arranged on the upper surface of the fixing plate. Fire extinguishers are placed in the fixing groove, then the fire extinguishers with different sizes are clamped through the clamping assembly, and then the hydraulic push rod drives the fire extinguishers to move to the height of the injection pipe, so that it is guaranteed that fire extinguisher tests can be kept under the same condition every time, and then the accuracy of fire extinguisher injection tests is guaranteed; when the fire extinguisher is subjected to injection detection, the injection distance, the injection pressure and the injection time of the fire extinguisher are measured through the graduated scale, the pressure detector and the timer, the overall applicability of the test device is improved, and meanwhile, the detection function of the fire extinguisher test device is added.

1. The name of the design product: puncture device for pharmaceutical injection test. 2. The use of the design product: the design product is used for puncturing human tissue and injecting therapeutic solution. 3. The design points of the design product: the overall shape of the appearance. 4. The picture or photo that best indicates the design points: perspective view 1.

The embodiment of the application provides a gear injection molding regulation method, obtains a test parameter table of target gear injection molding; performs simulation test according to the test parameter table to obtain a simulation result; determines global optimal process parameters according to the simulation result; performs injection test under the obtained global optimal process parameters to obtain a gear sample through injection molding; determines gear molding shrinkage according to gear sample measurement data; determines gear mold inverse cavity size parameters according to the gear molding shrinkage; determines gear cavity size according to the gear mold inverse cavity size parameters, and performs precision machining according to the gear cavity size to obtain a target gear injection mold; and performs target gear injection molding according to the target gear injection mold to obtain a target gear finished product. The small modulus gear injection molding precision is improved, which is beneficial to large-scale production and manufacturing of high-precision small modulus gears.

The invention discloses a safety assessment method for an intelligent driving automobile system boundary. The safety assessment method comprises the following steps: S1, constructing a multi-dimensional system boundary parameter system; s2, constructing a multi-factor coupling influence model; s3, constructing a third-level test verification system; s4, quantitatively evaluating the safety margin of the system; s5, establishing a boundary risk early warning and feedback mechanism; s6, constructing a digital twin mirror image verification system; and S7, implementing an adversarial attack injection test. According to the method, the systematic definition and analysis of the safety boundary of the intelligent driving system are realized by establishing a multi-dimensional system boundary quantitative evaluation system. Based on the boundary parameter system constructed by the three core domains, the security assessment of a complex technology system has quantifiable and traceable characteristics, and the introduction of the dynamic coupling analysis model effectively reveals the association rule among environmental interference, hardware performance attenuation and system state, and significantly improves the perspectiveness and accuracy of boundary risk prediction.

According to the multi-type IO fault signal injection test system and the fault injection method provided by the invention, fault signal injection verification is carried out on multiple paths of I / O cards and channels in the tested DCS module at the same time, injection of multi-type fault signals of the I / O channels is realized, and the system and the method are suitable for comprehensive and efficient injection test of multi-type fault signals of a DCS system. According to the invention, secondary development is supported, programming is carried out according to different requirements, and different scene control requirements are realized; the types of injectable signals are various, the system can perform fault signal injection verification and switch different signal types for a long time, and various injection tests on equipment interfaces are supported. The safety protection device is reasonable in structural layout, comprehensive in safety protection, convenient to use, operate and maintain and high in reliability of mechanical, electrical and control systems, and the safety meets relevant national standards and specification requirements.

Method and apparatus for improved computing system test execution are provided. A test framework is accessed. A group namespace annotation is detected in the first test framework. A first set of test cases is executed in a first namespace corresponding to the group namespace annotation. A duplicated namespace annotation is detected in the first test framework. A second set of test cases is executed in a plurality of namespaces corresponding to the duplicated namespace annotation.

The invention discloses an injection type dismounting-free radio frequency front end vulnerability on-line test method and device, and the device comprises an auxiliary test device, a power signal source, a frequency spectrograph, a vector network analyzer, a monitoring coupler, a filter, and a load. The injection power is directly injected into an input port of the tested radio frequency front-end assembly through the auxiliary testing device, and the frequency spectrograph monitors the injection power through a coupling port of the auxiliary testing device; the vector network analyzer generates a signal of a corresponding working frequency band of the tested radio frequency front-end assembly, and injects the signal into an input port of the tested radio frequency front-end assembly through an isolation port of the auxiliary test device; the output port of the tested radio frequency front-end assembly is connected with the monitoring coupler, the coupling end of the monitoring coupler is sequentially connected with the filter and the vector network analyzer, and the straight-through end of the monitoring coupler is connected with the load. According to the invention, the purpose of large-power auxiliary equivalent test covering frequency bands above GHz is achieved.

Embodiments of the present application disclose an error injection test method and device, electronic equipment and medium. The method comprises: obtaining a test bit corresponding to a to-be-tested storage unit, and writing target data into the to-be-tested storage unit according to the test bit, wherein the test bit is determined based on a position of an interrupt domain corresponding to the to-be-tested storage unit in an interrupt register; reading the target data stored by the to-be-tested storage unit according to the test bit, and determining an error injection data source according to the target data; performing a read operation on the to-be-tested storage unit again according to the test bit, and replacing the read result with the error injection data source to perform error injection on the storage unit. In this embodiment, the target data at the test bit in the to-be-tested unit is read, the error injection data source is generated based on the target data, the test bit is read again, and the read result is replaced with the error injection source data, so as to trigger an ECC check error, complete error injection, and improve error injection efficiency.

The application provides a load test method and system of a storage device and an electronic device, relates to the technical field of storage, and can obtain real use behaviors of a user by collecting access logs of the user on the storage device and preprocessing the access logs to obtain user behavior data, so as to avoid the defect that a general test case is separated from actual operation; features are extracted based on the user behavior data, and a user behavior portrait library is constructed, so as to accurately capture load tidal fluctuation characteristics and abnormal behavior patterns of user access and ensure the accuracy of test cases; and exclusive test cases containing tidal load test cases and abnormal behavior injection test cases are generated according to the portrait library, so as to simulate load fluctuations in actual use of the user, the abnormal behavior injection test cases match abnormal behavior characteristics in the portrait library, and sudden scenes in user operation can be reproduced, so that potential defects of the storage device under tidal load fluctuation and accidental abnormal behaviors are solved.

An example injection needle blowoff apparatus includes: a positioning plate having a first side configured to contact an injector and having a second side opposite the first side; and a blowoff nozzle adjacent the second side of the positioning plate, the blowoff nozzle comprising: a gas inlet configured to be coupled to a gas supply; a gas channel coupled to the gas inlet; and a gas outlet configured to direct gas from the gas channel towards a location of a needle of the injector, wherein at least a portion of the gas outlet is defined by a portion of the second side of the positioning plate.

The utility model relates to a universal detection box for an automobile ignition and oil injection system, which is applied to the technical field of automobile system detection and comprises a detection box body and a detection box cover, and configuration wire harnesses connected to an ignition detection hole and an oil injection detection hole are connected with automobile body wire harnesses. Meanwhile, configuration wire harnesses connected to the ignition test hole and the oil injection test hole are connected with an automobile ignition coil and an oil injector coil, the ignition test hole is electrically connected with the corresponding ignition detection hole through a circuit, the oil injection test hole is electrically connected with the corresponding oil injection detection hole through a circuit, and the detection holes transmit current signals to the test holes; after connection is completed, a plurality of cylinders can be detected at the same time through the divided cylinder signal input areas, the detection efficiency is improved, the integration effect is good, connecting lines are all arranged in the inner cavity of the detection box body, configuration wire harnesses are arranged at the connecting positions, automobile wire harnesses are not prone to being damaged in the detection process, and the detection cost is reduced.

An exemplary syringe needle blow-off device includes a positioning plate having a first side configured to contact the syringe and a second side opposite the first side, and a blow-off nozzle adjacent the second side of the positioning plate, the blow-off nozzle comprising a gas inlet configured to be coupled to a gas source, a gas channel coupled to the gas inlet, and a gas outlet configured to direct gas from the gas channel toward the syringe needle location, at least a portion of the gas outlet being defined by a portion of the second side of the positioning plate.

The invention discloses an error injection method and device, equipment and a medium in the technical field of computers. A user is allowed to flexibly select error injection distribution, flash memory characteristics, an error injection mode, an address range and an error injection condition through selection operation, so that the error injection flexibility and the error injection coverage range can be improved, then an error injection demand is generated, error injection is fully automatically completed, a final error injection report is generated, the error injection test efficiency can be improved, and the error injection test efficiency is improved. And diversified error injection requirements can be covered, the problem of limitation of the error injection test is solved to a certain extent, wider error requirements can be covered, and the error injection test range is expanded to a certain extent.

The application discloses a method for testing and extracting carrier injection barrier in dielectric, which is based on the relationship between the injection current density and the electric field intensity obtained by the injection charge quantity change rate and the electric field change, and the testing and extraction of the dielectric carrier injection barrier, and comprises the following steps: preparing a dielectric sample; performing electrode unipolar carrier injection test; calculating the conductive current of the carrier migration in the dielectric and the displacement current at the electrode and dielectric interface; calculating the carrier injection current density at the electrode and dielectric interface; correlating the current density and the electric field intensity at the electrode to obtain the carrier injection current density-electric field intensity relationship curve at the electrode interface in the dielectric; performing analysis and fitting to extract the carrier injection barrier. The testing and extraction method can truly reflect the electrical performance parameters of the dielectric under different electric field intensity working states, provides parameters for the charge transport simulation in the dielectric, and has significant scientific and economic benefits.

The application discloses a kind of methanol fuel high-pressure injection test bench, including rack, methanol delivery unit, high-pressure injection pump unit, cooling unit, lubricating unit and methanol fuel injection unit, methanol delivery unit input end is connected with methanol fuel storage cabinet, methanol delivery unit output end is connected with high-pressure injection pump unit input end.High-pressure injection pump unit first output end is connected with methanol fuel injection unit input end, second output end is connected with cooling unit input end, and cooling unit output end is connected with methanol fuel storage cabinet.High-pressure injection pump unit includes high-pressure injection pump and cam driving device, and methanol fuel injection unit includes accumulator, two two-position three-way electromagnetic reversing valve and two methanol fuel injectors.The application provides test evidence and theoretical support for troubleshooting cause and solution of methanol fuel system, and provides a solid foundation for the research and development of marine methanol fuel engine.

This application discloses a test system and method for a baseboard management controller based on automated anomaly injection. The system includes an intelligent control subsystem, an anomaly injection subsystem, and an evaluation and analysis subsystem. The intelligent control subsystem is used to collect the status information of the baseboard management controller, determine test rule information based on the status information, generate test instructions based on the test rule information, and send the test instructions to the anomaly injection subsystem. The anomaly injection subsystem is used to perform anomaly injection tests on the server in at least one anomaly dimension according to the test instructions, wherein the anomaly dimension includes a hardware anomaly dimension, a protocol anomaly dimension, and an environmental anomaly dimension. The evaluation and analysis subsystem is used to obtain the response information of the baseboard management controller to the anomaly injection test and evaluate the result of the anomaly injection test based on the response information.