87results about How to "Test accurate" patented technology

The invention discloses an industrial control private protocol vulnerability mining method based on protocol analysis. The method comprises the steps of 1, preprocessing industrial control protocol flow data; and 2, analyzing the target protocol by using the byte change characteristics and the heuristic rule. And 3, generating a test case of the target protocol by using the analysis specification. And 4, reconstructing a protocol state machine by using the state conversion track of the flow, and guiding the protocol to reach a target state for testing. And 5, tracking the state of the detected target and monitoring and positioning the triggered vulnerability through a network. According to the method, the analysis accuracy of the private protocol specification can be effectively improved, the test case acceptance rate, the test target anomaly rate and the state coverage rate in the fuzzy test process are remarkably improved, and meanwhile, more protocol states can be efficiently tested under the condition of the same number of test cases so as to mine more potential vulnerabilities in the protocol.

The utility model relates to the technical field of magnetic device testing, in particular to a magnetic device multi-station testing mechanism which comprises a carrying mechanism and a testing mechanism, the carrying mechanism comprises a portal frame, a carrying transmission module, a carrying connecting frame and a carrying grabbing module, and the testing mechanism comprises a Y-axis transmission module, a testing station and a testing jig. The carrying transmission module is arranged on the portal frame, the multiple carrying grabbing modules are arranged, the carrying connecting frame is arranged on the Y-axis transmission module, the multiple carrying grabbing modules are arranged on the carrying connecting frame side by side, the testing station is provided with an upper testing module and a lower testing module, and the upper testing module and the lower testing module are oppositely arranged. Therefore, the magnetic device on the test fixture can be tested. The device is high in automation degree, a series of operations such as carrying of magnetic devices and testing of each item are automatically completed, manual intervention is reduced, and labor cost is reduced.

The application discloses a microwave plasma testing device, system and method. The microwave plasma testing device comprises an electrostatic probe, a probe current voltage measurement module and a control module which are connected in sequence, and a scanning power generation module is further connected between the electrostatic probe and the control module; the control module generates a test signal, and the scanning power generation module generates a scanning voltage according to the test signal to drive the electrostatic probe to work; the electrostatic probe collects current voltage signals of a microwave plasma to be tested under the scanning voltage when working; the probe current voltage measurement module processes the current voltage signals to obtain processed current voltage signals; and the control module calculates the processed current voltage signals to obtain test parameters of the microwave plasma to be tested. The current voltage signals are collected through the electrostatic probe, the microwave plasma can be tested quickly and accurately, and the accuracy and effect of the test are improved.

The invention discloses a method and device for determining a test path in a distributed system test scene, and relates to the field of distribution.The method comprises the steps that in the test process of a distributed system, interaction data between nodes of the distributed system is collected, and the interaction data at least comprises the calling direction, the calling frequency, delay and historical fault associated information; constructing a test coverage graph according to the interaction data, wherein the test coverage graph is used for representing interaction strength and potential risk information among the nodes; determining a target damping coefficient according to the weight volatility predicted by the neural network model for each node of the distributed system; determining the weight of the edge of the test coverage graph according to the interaction frequency, the average delay and the historical fault propagation probability among the nodes of the distributed system; and determining a test path of the distributed system according to the target damping coefficient and the weight of the edge of the test coverage graph. According to the method and the device, the problem of inaccurate test path selection in the existing distributed system test is solved.

The utility model discloses a wind tunnel rack, and relates to the technical field of automobile part test and aerodynamic measurement. The device comprises an air pipe, a conical cover is fixedly arranged at one end of the air pipe, a pipe head is fixedly arranged at the other end of the air pipe, an air supply assembly is arranged at one end of the conical cover, and testing assemblies are arranged on the air pipe and the pipe head. The air supply assembly comprises an air blower; an air valve is assembled at an air suction opening of the air blower; according to the utility model, the whole device is composed of the fan module, the control module, the sensor module, the air duct system and the test cavity, and all the modules are connected through standard interfaces, so that rapid assembly, disassembly and maintenance are facilitated, and the device is suitable for multi-scene deployment; the rotating speed of the air blower is accurately adjusted through the frequency converter, and a full-range speed wind field from low speed to high speed can be simulated in combination with a pressure difference conversion algorithm, so that the test is closer to the actual driving working condition, and the reference value of data engineering is improved.

The application belongs to the technical field of automobile parts life test, in particular to a kind of automobile parts service life test device, including test body;The test body is built-in ozone generator and temperature and humidity regulator;Through servo motor drive fixed frame and tire idling, detect the conventional data under the setting environment, idling reaches the setting duration, No. 1 electric slide frame drives storage tank and tire to move down, tire is covered in sandstone pile through through slot and rubs, simulate the impact and wear of sandstone pavement, intermittent up and down movement of tire is required in test, backfill medium when sliding down, test when sliding down, can be operated with mechanical hand, ensure the authenticity of sandstone road condition simulation, sandstone groove can place big and small particle sand, also can add gravel, glass fragments and other medium, simulate the wear and tear and puncture of different road conditions on tire, satisfy various test scenes, ensure the accuracy and reference value of tire service life test.

The invention relates to the technical field of nuclear power, in particular to a testing device and a testing method for nuclear fuel cladding blasting. The testing device comprises a reaction container, a heating mechanism, a vacuum mechanism, a pressure detection mechanism and a to-be-tested workpiece, wherein the reaction container is provided with a reaction cavity; the heating mechanism is used for heating the reaction cavity; the vacuum mechanism is used for vacuumizing the reaction cavity; the pressure detection mechanism is used for detecting air pressure change in the reaction cavity; a to-be-detected workpiece is arranged in the reaction cavity, the to-be-detected workpiece is provided with an accommodating cavity, and a detection medium is pre-sealed in the accommodating cavity; wherein if the heating temperature of the heating mechanism to the reaction cavity reaches the blasting critical value of the to-be-detected workpiece, the to-be-detected workpiece is blasted, the detection medium is in the form of a gaseous medium, the gaseous medium flows from the interior of the accommodating cavity to the reaction cavity, and the pressure detection mechanism can detect the air pressure change in the reaction cavity after the to-be-detected workpiece is blasted. According to the test method, the test device is applied to test experiments. The testing device and the testing method are wide in applicability.

The application relates to the technical field of PCIe devices, and discloses a parameter configuration method and device, a computer device and a storage medium, the method comprising the following steps: setting a plurality of first preset value combinations; configuring preset values of a plurality of PCIe devices according to the first preset value combinations, and performing first testing on the plurality of PCIe devices to obtain first testing results; determining an effective preset value range that can be configured by each PCIe device according to the first testing results; selecting an effective preset value from the effective preset value range corresponding to each PCIe device to form a second preset value combination; configuring preset values of the plurality of PCIe devices according to the second preset value combination, and performing second testing on the plurality of PCIe devices to obtain second testing results; and determining an optimal second preset value combination according to the second testing results corresponding to the plurality of second preset value combinations. The application can determine optimal preset values corresponding to each PCIe device respectively, and can simultaneously ensure the stability of PCIe links of each PCIe device.

The utility model discloses a kind of foundation detection devices for construction engineering, which belongs to the technical field of construction engineering foundation detection.It mainly includes base, and base is slidably connected with lifting frame, and lifting frame is slidably connected with detection mechanism and measuring mechanism respectively on it, and detection mechanism includes platform one, and two slides are connected at the bottom of platform one, and chute plate is connected at one side of platform one upper portion, and hole three is opened on platform one above chute plate bottom, and gear plate is slidably connected in chute plate, and threaded rod is connected at the bottom of gear plate, and limit recess is opened on the surface of threaded rod, and nut is screwed on threaded rod, and spring is nestedly connected with threaded rod, and one end of spring is abutted with platform one bottom, and the other end of spring is abutted with nut.The utility model detection mechanism is matched with gear plate through half gear, and ground is knocked through the elastic force of spring, and the error of device itself is reduced, and the depth of ground depression can also be measured through measuring mechanism, which is more practical and convenient.

The invention provides an acid rock reaction kinetics testing device and method, and relates to the technical field of acid rock reaction kinetics test.The device comprises a reaction kettle, a rotation driving part is arranged in the reaction kettle, and the rotation driving part is used for being connected with a rock core sample and can drive the rock core sample to rotate in the reaction kettle; a first heating part is arranged on the outer side of the reaction kettle; the acid injection structure is connected with the liquid inlet pipeline of the reaction kettle, and the acid injection structure is used for being connected with a gas source; the cooling structure is connected with a liquid outlet pipeline of the reaction kettle; the reinjection structure is connected with an output pipeline of the cooling structure and is connected with the acid injection structure through a reinjection pipeline; the problems that in the acid rock reaction kinetics testing technology in the prior art, spraying of steam-state spent acid can affect the sampling precision of the spent acid and form potential safety hazards, and for a high-temperature and high-pressure reaction kettle, a large amount of time needs to be consumed for cooling after each test, and continuous testing cannot be conducted are solved.

The application provides a train bearing test device, which comprises an axle box, a first load applying device and a driving device. The axle box is used for mounting a bearing to be tested, the bearing is sleeved on an axle shaft, and the axle shaft and the bearing are located in the axle box. The first load applying device comprises a plurality of load output ends, which are used for contacting the bearing and applying a plurality of lateral loads to the bearing, at least two of which are different in size. The driving device is connected with the axle shaft and is used for driving the axle shaft to rotate. The device accurately simulates the bearing working condition of train running and running to a small radius curve by applying lateral eccentric load to the bearing through the first load applying device, accurately tests the performance of the train bearing, and provides reliable data support for the design and production of the train bearing.

The invention discloses a method for testing the sensitivity of a piezoelectric acceleration sensor in real time under thermal stress and vibration stress. The method comprises the following steps: step 1, establishing a set of piezoelectric acceleration sensor sensitivity real-time testing system for providing thermal stress and vibration stress; 2, building a test system program block diagram and designing a software interface on the basis of LabVIEW; 3, setting a thermal vibration stress environment of the test system; 4, determining peak-to-peak values of output signals of the to-be-detected sensor and the standard sensor; 5, calculating the sensitivity of the sensor to be detected; by using the test system, the sensitivity of the piezoelectric acceleration sensor can be tested in real time in a thermal and vibration dual-stress test environment.

This application discloses a testing device for an auxiliary power unit oil removal valve, relating to the field of aircraft oil removal valve testing technology. It includes: a base; a housing, the housing being disposed on the base, the housing having an inner cavity; the housing having an inlet connection portion and an outlet connection portion, the outlet connection portion being used for a sealed connection with the outlet of the oil removal valve, and the inlet connection portion being used for a sealed connection with the inlet mesh of the oil removal valve. This utility model adopts a modular design, reducing potential failure points, lowering maintenance costs, and improving the adaptability of the equipment, enabling it to meet the testing needs of oil removal valves of different models and specifications.

A system and method for testing coherent and frequency agility characteristics of a radar echo simulation device, the system comprising: a local oscillator signal generation module for generating a frequency agile local oscillator signal; a signal transmission module for generating a modulated transmit baseband signal; upconverting the modulated signal and transmitting to the device under test, outputting the phase and frequency of the transmit baseband signal to a phase difference calculation module and a frequency difference calculation module; a signal reception module for receiving a signal returned by the device under test, downconverting the received signal based on the frequency agile local oscillator signal to obtain a receive baseband signal, outputting the phase and frequency of the receive baseband signal to the phase difference calculation module and the frequency difference calculation module; a phase difference calculation module for calculating the phase difference between the receive baseband signal and the transmit baseband signal; a frequency difference calculation module for calculating the frequency difference between the receive baseband signal and the transmit baseband signal; a testing module for determining the coherent characteristic and the frequency agility characteristic of the device under test based on a plurality of sets of phase difference values and a plurality of sets of frequency difference values, respectively.

This application provides a KNN-based method and apparatus for software test scope assessment. The method includes: acquiring information on each first call chain affected by a code modification of a target software platform; determining information on the second call chains for each automated test scenario corresponding to each interface test case of the target software platform; and using the KNN model to determine all automated test scenarios corresponding to the code modification to generate a test scope assessment report for the code modification of the target software platform. This application can effectively improve the automation and intelligence of software test scope assessment, and can effectively improve the accuracy and validity of the software test scope assessment results, thereby improving the reliability and efficiency of testing based on the software test scope assessment results.

The utility model relates to a permanent magnet rotor test device, which comprises a bedplate, a rotor clamping device and a detection device, and is characterized in that the detection device comprises a sensor and a translation driving device used for driving the sensor along the axial direction and the radial direction of a rotor; the rotor clamping device comprises a rotor supporting frame, a tip A and a tip B which are arranged on the left side and the right side of the rotor supporting frame, and a rotation driving device used for driving the tip A to rotate. According to the utility model, the test spacing can be set according to the arrangement condition of the magnetic steel in the rotor, the rotor is driven by the rotation driving device to rotate at a set speed during the test, and the sensor is driven by the translation driving device to move to a set position in sequence to realize the test of the whole length of the rotor. The tested two-dimensional magnetic field waveform can be displayed on a computer interface, whether the two-dimensional magnetic field waveform is qualified or not can be judged by comparing the two-dimensional magnetic field waveform with a standard waveform of a corresponding rotor, the whole testing process is more visual, accurate and efficient, and the method is suitable for production of a production line.

A kind of self-defined virtual obstacle automatic driving real vehicle-in-the-loop test method and system, the method includes establishing test scene containing trigger origin and virtual obstacle, according to trigger origin, the advance trajectory of self-defined virtual obstacle is triggered corresponding test scene when test real vehicle travels to trigger origin, test real vehicle GPS coordinate and heading angle are obtained once every preset time period, the relative coordinates of virtual obstacle relative to trigger origin at the same time are calculated, then the GPS coordinate of virtual obstacle is calculated, based on the GPS coordinate of virtual obstacle and the GPS coordinate of test real vehicle obtained at the same time, the body coordinate of virtual obstacle relative to test real vehicle at current time is calculated and sent to the decision controller of test real vehicle, the decision controller makes decision according to the received body coordinate of virtual obstacle to control the motion of test real vehicle, realize test scene customization and test condition repeatability, greatly improve the efficiency of automatic driving scene test.

The utility model discloses a catalyst conductivity testing device, which comprises a testing clamp, an electric heater, a humidifier, a temperature sensor and a humidity sensor, and is characterized in that the testing clamp consists of a first runner plate and a second runner plate; a catalyst film needing to be detected is fixed between the first flow channel plate and the second flow channel plate in a threaded connection mode, the surfaces, making contact with the catalyst film, of the first flow channel plate and the second flow channel plate are inner surfaces, and the other surfaces of the first flow channel plate and the second flow channel plate are outer surfaces; the electric heater is arranged on the outer surfaces of the first runner plate and the second runner plate and is used for heating the test fixture; a moisture outlet of the humidifier is communicated with an air inlet in the clamp through an air path, and the humidifier is used for outputting moisture into the clamp; the temperature sensors are arranged in temperature detection holes in the first flow channel plate and the second flow channel plate and used for monitoring the temperature in real time, and the humidity sensors are arranged in the air channels and used for monitoring the humidity in real time.

The utility model relates to pipeline tensile test method technical field, and disclose a kind of round pipe tensile fixture, including fixed support rod, the outside rotation of fixed support rod is connected with rotary handle, the outside sliding connection of fixed support rod has fixed support rod, the top fixed connection of fixed support rod has loading mechanism fixed slot, the top sliding connection of fixed support rod has big wedge and small wedge, the inside sliding connection of fixed support rod top has big wedge, the utility model has remarkable advantage, one is simulation real force precision test, through big, small wedge cooperation, can accurately reflect the stress strain in round pipe actual engineering, obtain accurate mechanical property data, two are simple and easy to operate efficient, utilize rotary handle and side handle, adjust fixed support rod position to easily realize round pipe clamping loosening, save test time, three are clamped stable and reliable, wedge automatic gap filling, prevent round pipe skewing sliding.

The present application relates to cable testing device technical field, name is a kind of cable flame resistance testing device, including device frame, vertical rod is installed in the left and right sides of device frame, there is also the fixture of cable installation on cable, when using, the cable is installed on fixture, two fixtures are burning cable area between, lifting cylinder is also installed on device frame, the lifting cylinder has burning groove on top, the burning groove has the burning groove opening on top, the burning groove opening is below between two fixtures;Nut screw motor driven nut screw is also installed on device frame, nut sleeve is also installed around nut screw, connecting rod is also installed on nut sleeve, the other end of connecting rod is also connected with cleaning sleeve, the cleaning sleeve is annular structure. It has the advantages of accurate testing, convenient to use.

The application relates to the technical field of fault testing, in particular to a data center machine room power supply testing system and a testing method thereof. The method periodically acquires electric signals and rated electric signals; determines current characteristic parameters and voltage characteristic parameters according to the difference relationship between the fundamental wave electric signals and the rated electric signals; determines the fault probability value in each cycle according to the phase difference relationship between the extreme value data of the electric signals in each cycle and the extreme value data of the fundamental wave electric signals, the correlation relationship between the current characteristic parameters and the voltage characteristic parameters; and determines the total fault probability value according to the correlation relationship between the fault probability value and the current change characteristic parameters. Therefore, the possibility of the UPS existing fault problems can be accurately tested by considering whether the waveform distortion occurs in the electric signals and whether the change degree of the electric signals in each cycle has synchronization in time.

The utility model belongs to electrical detection technical field discloses a kind of insulation resistance rapid testing device, it includes box and handle cap, button switch, banana socket, connector and small brush shape switch installed on it;Handle cap is connected together with small brush shape switch, handle cap is installed to the outside of box, and small brush shape switch is installed to the inside of box;Button switch is installed to the outside of box, for switching small brush shape switch;Banana socket is installed to the outside of box, and it is insulation table needle insertion end;Connector is installed to the outside of box, and is connected with the measured product test end connection.The utility model is connected together by box handle cap, button switch, banana socket, connector and small brush shape switch, connect each terminal by wire according to circuit schematic diagram, after insulation table and measured product are connected with insulation resistance testing device, the test of insulation resistance can be realized quickly, accurately and safely, it is simple and safe to operate, and it can be widely applied to the insulation resistance test of various electrical products.

The embodiment of the utility model relates to the technical field of automatic testing, and discloses a module power consumption testing system and electronic equipment, and the system comprises a DC power supply, a detection resistor, a power consumption detection circuit, a tested module and a display module. The detection resistor is connected in series between the direct-current power supply and the detected module, current output by the direct-current power supply flows into the detected module through the detection resistor, and working current is provided for the detected module; the power consumption detection circuit is connected with the detection resistor and a detected module, and is used for amplifying the voltage difference between the two sides of the detection resistor to obtain a processed voltage, and inputting the processed voltage into the detected module; the detected module is connected with the display module, and the detected module is used for sampling the processed voltage to obtain a detection voltage and calculating a theoretical voltage corresponding to the power consumption detection circuit at a sampling time point according to a preset instruction; the display device is used for calculating and displaying a test result according to the theoretical voltage and the detection voltage.

The utility model discloses a kind of fuel tank strength testing devices, belong to strength test field. Including clamping assembly, the clamping assembly includes frame base, limit strip is installed on two side edge positions of frame base, positioning part is installed between two groups of limit strip, clamping part is installed between two groups of limit strip, drive part is provided at the bottom of frame base;Test component, test component is used to impact test to the side edge of fuel tank;Limiting component, limiting component includes the shielding part for covering test area, fixed part is installed on the shielding part for clamping fuel tank, and the pressing part for pressing fuel tank is connected on the shielding part. A kind of fuel tank strength testing device of the application, by clamping, test, limiting component cooperation, positioning part is firmly clamped fuel tank from multidirectional, test component controls impact parameter, all-around limit displacement, impact point precision is kept, data accuracy is proposed.

The application provides a planet rover transfer device and a transfer characteristic test evaluation method, and belongs to the technical field of planet rover transfer and test. The planet rover transfer release device comprises a slow-release rope, a hanger, a swing rod and an attitude control rope. One end of the swing rod is rotationally connected to a side wall of a lander. The other end of the swing rod is provided with an attitude control hinge. One end of the hanger is connected to the attitude control hinge, and the other end of the hanger is connected to a rover. One end of the attitude control rope is connected to the lander, and the other end of the attitude control rope passes through the attitude control hinge. The slow-release rope is wound on a slow-release rope wheel. The slow-release rope wheel is arranged on the side wall of the lander. The slow-release rope is connected to the hanger. The device is mainly used for planet rover transfer device and transfer characteristic test.

The application discloses a kind of flexible multifunctional detection rack, including rack main body, the upper end of rack main body is positioned and installed with pedestal, the front end of pedestal is provided with first display and second display, test table is installed on rack main body, jig quick-change positioning device is arranged in the middle of test table, printer is installed in the side of test table, controller is installed in the front end of test table, flexible electrical control system is positioned in the inside of rack main body, cabinet is arranged in the inside of rack main body in front position, ammeter, voltmeter and industrial computer are arranged in the inside of cabinet.The flexible multifunctional detection rack can accurately and reliably test various products produced by it to ensure the accuracy and stability of the products in various actual application scenarios, which not only can improve the product quality and market competitiveness of enterprises, but also can provide more accurate and reliable products for users.

The embodiment of the invention relates to the technical field of vehicle testing, and discloses a driving shaft starting and reversing abnormal sound testing method and system, and the method comprises the steps: determining a rack torque load and a loading frequency threshold value based on the load spectrum data of a driving shaft assembly of a real vehicle road test; a hub and a driving shaft assembly are installed through the test bench; wherein the driving shaft assembly is connected with the wheel hub, and the wheel hub and the driving shaft assembly are respectively connected with the test bed; loading torque to the hub according to the rack torque load, recording the actual loading times of the torque, and collecting sound generated at the joint of the hub and the driving shaft assembly; and if the actual torque loading times when the decibel of the sound is larger than the preset threshold value is smaller than the loading time threshold value, it is determined that the starting and reversing abnormal sound performance of the driving shaft assembly is unqualified. According to the technical scheme, whether the abnormal sound performance of the driving shaft assembly is qualified or not can be visually determined, and the abnormal sound problem can be found in the initial stage of design.

The utility model discloses an MCU chip test experiment device, which relates to the field of MCU chip test experiments and comprises a replaceable MCU chip test circuit, a crystal oscillator circuit, a power supply and switch circuit, an analog electricity / digital electricity switching circuit, an NRST test circuit, a liquid crystal control circuit, a serial port test circuit, an I2C test circuit, an ADC test circuit and a GPIO characteristic test circuit. The output end of the replaceable MCU chip test circuit is electrically connected with the input ends of the crystal oscillator circuit, the power supply and switch circuit, the analog / digital power switching circuit, the NRST test circuit, the serial port test circuit, the I2C test circuit, the ADC test circuit and the GPIO characteristic test circuit. The MCU chip test experiment device is comprehensive in test function, integrates various test circuits, can realize comprehensive test of the MCU chip, is wide in application range, and can test MCU chips of various models due to the design that the MCU chip test circuits can be replaced.

The utility model relates to life test technical field especially relates to a kind of simulation load rotary motor life test device. It includes base, the first support for fixing curling iron of being set in the base one side, the second support for fixing hysteresis brake of being set in the base other side, the hysteresis brake for providing brake torque to the curling iron fixed on the first support and being fixed on the second support and the trigger mechanism for triggering the left turn button and the right turn button of the trigger mechanism for triggering the curling iron fixed on the first support of being set on the base. Test is more accurate using this test device.

The embodiment of the invention discloses a resistor fault detection device. The equipment comprises a man-machine interaction module which responds to a first operation on a test key and sends a first level signal to a processor module; the processor module is used for receiving the first level signal, sending a first control command to the connector and sending a second control command to the to-be-tested equipment; the connector is used for responding to the first control command to connect the to-be-tested equipment and the resistance test module, so that a relay of an activation loop in the to-be-tested equipment responds to the second control command to perform a first action, and then a to-be-tested resistor in the to-be-tested equipment is connected into the resistance test module; the resistance test module is used for collecting a test signal of a to-be-tested resistor and sending the test signal to the processor module; and the processor module is also used for obtaining a resistance value of the resistor to be tested and a test result according to the test signal and sending the resistance value and the test result to the man-machine interaction module.