618results about How to "Valid test" patented technology

The invention relates to an expansion/shrinkage stress testing device for a cement-based material, which comprises an inner circular ring and an outer circular ring which are coaxial and have the same height, and a stress testing device and a data acquisition device which are electrically interconnected, wherein the inner circular ring and the outer circular ring are made of the same material; and the stress testing device comprises a plurality of test stress plates which are distributed evenly along the circumferential direction on the outer surface of the outer circular ring and the inner surface of the inner circular ring and are electrically connected with the data acquisition device. When the testing device is used, the cement-based material (such as pure slurry, mortar or concrete) is cast between the two rings. The expansion and shrinkage stress can be calculated according to the analysis of material mechanics by measuring the stress. Compared with the prior method, the testing device has the main advantages that: a, the testing device is simple, and simple and convenient to operate; b, the restraint stress is even; and c, the testing of starting self water addition molding can be implemented, the testing process needs no manpower to move the test piece, and continuous and automatic test can be realized.

The invention relates to a method for testing expansion/contraction stress of a cement-based material, which adopts a device for testing the expansion/contraction stress of the cement-based material is adopted. The device comprises inner and outer circular rings which are coaxially arranged and have the same height, and a strain testing device and a data acquisition device which are mutually electrically connected, wherein the materials of the inner and the outer circular rings are the same; the strain testing device comprises a plurality of testing strain gauges; the strain gauges are distributed on the external surface of the outer circular ring and the internal surface of the inner circular ring uniformly along a circumferential direction, and each testing strain gauge is electrically connected with the data acquisition device; the cement-based material is poured between the inner and the outer circular rings, and the strain of the inner and the outer circular rings is tested; and the expansion/contraction stress at a position where the internal radius of the cement-based material is r is calculated according to a formula (I). The method has the advantages that a, the test device is simple, and the operation is simple and convenient; b, restraint stress is uniform; and c, the method can test at the initial stage of watering moulding without moving test specimens, and continuous and automatic test.

The invention relates to an unmanned aerial vehicle test bed and a test method thereof. The unmanned aerial vehicle test bed comprises a fixed base (1), a guide shaft (4), a double flange structure, a flange ring (6), a motor mounting base, a motor (17), a rotor wing (18), a force sensor (13), a speed sensor (8) and a torque sensor (14), wherein the double flange structure comprises an upper flange (3) and a lower flange (2), the upper flange (3) is fixedly connected with the lower flange (2), the motor mounting base comprises a motor mounting lower foundation bed (15) and a motor mounting upper foundation bed (16), the motor mounting upper foundation bed (16) is fixed on the motor mounting lower foundation bed (15), and the rotor wing (18) is fixedly connected with the motor (17). The invention also provides a test method of an unmanned aerial vehicle aircraft model airplane motor. A novel mechanical structure improves stability and test accuracy of the test board, and the test method can be widely applied to the fields of motor characteristic test and propeller lift characteristic test.

The application discloses a device and a method used for testing a blockchain-based smart contract. The device includes: a sorting unit, which is configured for carrying out sorting according to feature pair functions of functions in the smart contract; a selection unit, which is configured for selecting a predetermined number of functions according to a sorting order; and a testing setting unit,which is configured for respectively setting an event monitor, which is used for testing, and a parameter, which needs to be monitored, for each function selected by the selection unit.

The invention discloses a method for testing a network equipment, solving the problem that the prior art has no test to the data flow forwarding capability of the network equipment. The method comprises the steps: a testing apparatus transmits a test data flow and an authentication data flow to the network equipment, the test data flow includes an analog user data flow, the destination address of each analog user data packet is a testing apparatus address, and the source address is an analog user address; the testing apparatus judges whether the network equipment can forward the test data flow normally according to whether or not the test data flow forwarded by the network equipment is received in the setting time and according to the saved authentication information to the analog users by an authentication server; and judges whether the network equipment can offer normal authentication to the analog users with predetermined number according to the authentication results made by the testing apparatus itself and the authentication results returned from the network equipment. The invention also provides a system and an apparatus for testing the network equipment. The invention puts forward the proposal to realize the test to the forwarding data flow capability of the network equipment.

The invention relates to an intelligent synchronous testing and adjusting method capable of simultaneously infusing, testing and regulating, belonging to the field of oil extraction technologies in oil fields. A method of adopted equipment comprises the following steps: (1) a synchronous intelligent testing and adjusting device release part; (2) an intelligent testing and adjusting part; (3) a guiding part; and (4) an eccentric water distribution part. The adopted equipment is characterized in that the intelligent synchronous testing and adjusting method of the whole equipment comprises the following steps: descending into a well: using a steel wire to be suspended to descend into the well; placing the synchronous intelligent testing and adjusting device into a connected technological pipecolumn provided with an eccentric water distributor and a packer; and leading the adjustable blanking plug into an eccentric hole of the eccentric water distributor and releasing the adjustable blanking plug so that the adjustable blanking plug stays in the eccentric water distributor. The invention can realize the unchanged bridge type eccentric whole well working system, directly obtain the single-layer flow, achieve the simultaneous water infusion, testing and adjustment at multiple layers and enhance the work efficiency.

The invention discloses a pair-wise test method based on priority and belongs to the technical field of software testing. The method includes steps that rules are determined through the priority, and a priority value of a dereferencing of each parameter to be tested is defined; a greedy algorithm is utilized to obtain M candidate test cases according to an one dimensional expansion strategy and the priority of the dereferencing of each parameter to be tested; the candidate test cases are coded so that an initial population can be obtained, then the initial population is evolved by a provided genetic algorithm, when the genetic algorithm stops, optimum individual is selected among the initial population, and the optimum individual is added into a test case set; and certain times of executing the steps are limited according to test conditions, and the testing is performed according to the sequence of test cases obtained in the test case set during testing. By means of the method, problems that under the condition of limited resources, the key parameters and combination can not be fully tested, the time of generating the test cases is excessively long, the defect detection rate can not be passed and the like are solved.

The invention discloses a current-limiting circuit for testing performance indexes of a resistive random access memory (RRAM), which at least comprises a voltage comparator, a single-pole double-throw analog switch, a RRAM and a current-limiting MOS tube, wherein reading-writing-erasing pulse signals are divided into two paths of signals to be input into the circuit; one path of signals are input into the voltage comparator to be used for distinguishing the reading-writing-erasing voltage, the reference voltage of the voltage comparator is regulated according to the operating level of the reading-writing-erasing pulse signals, and the level output by the voltage comparator is used as the control signal of the single-pole double-throw analog switch, thereby determining whether to gate to the branch of the current-limiting MOS tube or ground under the operating voltage through the control signal; and the other path of signals are directly applied to the RRAM to be tested to provide the operating voltage. The invention finishes the current-limiting test of the RRAM, reliably tests the performance indexes of the prepared memory sample wafer, and solves the current-limiting problem of the RRAM in the set process in the pulse test mode.

The invention belongs to the technical field of a distributed generation micro grid system and provides an RTDS (real time digital simulator) based stability simulation testing platform for a micro grid system. The micro grid system is a small power generation and distribution system integrating a distributed power supply as well as energy storage, load, monitoring and protecting devices, simulation models about wind power, photovoltaics, energy storage, power grid, load and the like are established on an RTDS real-time simulation platform, a micro grid system RTDS simulation platform is formed, a micro grid system-RTDS hardware-in-loop testing platform is formed on the basis of various IO interfaces of the RTDS real-time simulation platform and in combination of a micro grid actual controller, accordingly, whether system parameters of the micro grid system under the operating conditions of steady state and transient state meet the national standard of stable operation of a power distribution network is tested, and the boundary range of the stable operation of the micro grid system is verified.

The invention discloses a testing platform and a testing method for a power supply system of a gasoline-electric hybrid unmanned aerial vehicle. The testing platform for the power supply system of the gasoline-electric hybrid unmanned aerial vehicle comprises an engine power generation device (1), a rotor wing motor characteristic testing station (2), a signal conditioning device (3), an electronic speed regulator (4), a signal collection card (5) and an upper computer (6), wherein the electronic speed regulator (4) is configured to regulate a revolving speed of a motor, the signal collection card (5) is configured to collect signals, the engine power generation device (1) comprises an engine (7), a power generator (8), a revolving speed sensor (9) and a torque sensor (10), and the rotor wing motor characteristic testing station (2) is provided with a rotor wing (11) of the unmanned aerial vehicle, the motor (12), a force sensor (13), a speed sensor (14) and a reaction torque sensor (15). The testing platform and the testing method for the power supply system of the gasoline-electric hybrid unmanned aerial vehicle disclosed by the invention has the characteristics of short development time, low cost and the like.

The present disclosure provides a driverless vehicle simulation test method and apparatus, a device and a readable medium. According to the present disclosure, an accident video is obtained from an accident video database of a traffic management department; corresponding accident scenario information is obtained according to the accident videos; a simulated accident scenario is constructed according to the accident scenario information, and vehicle behaviors of the simulated driverless vehicle in the simulated accident scenario are tested. With the accident video being obtained from the accident video database of the traffic management department, the present disclosure can ensure authenticity and accuracy of the simulated accident scenario for simulation test of the driverless vehicle, therefore can perform real and valid test for the driverless vehicle and effectively improve the accuracy and validity of the driverless vehicle simulation test.

The present invention discloses a PVDF-based water jet transient impact pressure testing method and a device. The device comprises a water pump, a nozzle, a motor, a front stop plate, a rear stop plate, a target plate and a computer. The inlet of the water pump is connected with a water tank through a pipeline. The outlet of the water pump is connected with the nozzle through another pipeline. The motor, the rear stop plate and the target plate are arranged on a test bench. The output shaft of the motor is connected with the front stop plate. The target plate, the front stop plate and the rear stop plate are parallel to one another. Corresponding to the nozzle, the front stop plate is provided with a plurality of through holes. Corresponding to the nozzle, the rear stop plate is provided with a jet hole. Corresponding to the jet hole, the target plate is provided with a pressure sensor. The pressure sensor is connected with the computer. The device is simple in structure and convenient in operation. By adopting the stop plates, a continuous water jet is cut off. Therefore, the test on the transient impact effect of a water jet under a stable working pressure can be conducted.

The invention discloses a pre-embedded box and an installation method, comprising a shell, a chassis and a water connection; the chassis is installed in the casing, and forms a water inlet and outlet, and the water connection is connected through the outside of the casing The water inlet and outlet; the pre-embedded box is also provided with a seal test assembly, which is installed in the housing; the seal test assembly includes a pre-embedded box cover plate, and at least two seal test plugging units, The seal test plugging unit is movably connected to the cover plate of the pre-embedded box, and corresponds to the water inlet of the chassis respectively; the invention provides a pre-embedded box and an installation method with simple structure, reasonable design and easy realization. Test the airtightness of the water inlet and outlet to ensure that there will be no water leakage accidents after the subsequent installation is completed, and the installation and adjustment are simple and extended by folding to avoid the problem that the bathroom components cannot be connected with the embedded box pipelines, which is conducive to the realization of Quick installation, adjustment, maintenance, replacement and product upgrades make it easier to meet the needs of installation and use.

The invention provides a test system of a power gearshift controller of a tractor. The test system comprises a PXI real-time system, an electric signal conditioning module, a fault injection module and a computer. The PXI real-time system generates a gearshift control signal according to a test scene, the fault injection module transmits a gearshift control signal injected with fault information to the electric signal conditioning module, the electric signal conditioning module conditions the gearshift control signal injected with fault information and transmits the conditioned signal to the power gearshift controller, the power gearshift controller emits a control instruction and signal and returns the control instruction and signal to the PXI real-time system according to the gearshift control signal and a control strategy of the controller, and a computer carries out analysis according to the gearshift control signal and the control instruction and signal returned from the power gearshift controller to obtain a fault condition test result. The system of the invention can be used to carry out hardware-in-loop fault injection test on the power gearshift controller of the high-horsepower tractor effectively, and a test result can be used to improve the reliability of the power gearshift controller of the tractor.

The invention relates to a testing method for moisture states of an oil-immersed type bushing. Due to the influence to the oil-immersed type bushing by over-standard of drying production technology, sealing failure of outer insulation, insulation aging of oil paper and the like, the water in the insulation paper always maintains the nonuniform distribution state; the moisture state of the bushingis evaluated by the ground insulation resistance of a bushing tap, tangent value of dielectric loss angle, and electric capacitance; however, the previous testing process cannot obviously reflect thewater content in the insulation paper of the bushing, and the sensitivity is lower, so that the moisture state of the oil-immersed type bushing cannot be effectively evaluated. The testing method hasthe advantages that the hidden Markov model parameters of the bushing under different moisture states and at different temperatures can be obtained; according to the tested dielectric spectrum curve,the probability of different moisture states of the bushing is calculated by a shuffled frog leaping algorithm, so as to effectively test the moisture states of the oil-immersed type bushing.

The invention discloses a method for discovering software vulnerabilities, which belongs to the field of software engineering and information security. The method comprises the following steps of: 1) inputting a plurality of normal data into a target program and collecting runtime information of the target program; 2) generating malformed data, inputting the malformed data into the target program, and collecting the runtime information of the target program; 3) identifying a detection code of the checksum in the target program according to the runtime information collected in the step 1) and the step 2); 4) modifying the detection code of the checksum to ensure that the execution behavior of processing the malformed data by the target program is in accordance with that of processing the normal data by the target program; 5) generating a certain number of the malformed data and inputting the generated malformed data into a modified target program, and taking the malformed data which collapses the target program as sample data; and 6) modifying a domain value of the checksum in each sample data and inputting the domain value into an original target program, and if the original target program is collapsed or generates abnormalities, reporting a potential security vulnerability. Compared with the prior art, the method for discovering the software vulnerabilities can greatly improve the efficiency of discovering the vulnerabilities.

The invention discloses thermal environment two-way loading test equipment and a test method and belongs to the technical field of mechanical property test of materials in thermal environments and under complex loading. The equipment and method are used for performing optical speckle strain measurement on a cross test piece. The equipment comprises a rack, a heating furnace, four drawing devices,a light source and a camera, wherein drawing rods of the drawing devices extend into the heating furnace via wall holes of the heating furnace, so that chucks are located in the heating furnace, the test piece is clamped by four chucks to be located in the heating furnace, when linear drive mechanisms drive each drawing rod to move linearly to draw the test piece, force sensors are arranged on thedrawing rod to measure tension borne by the test piece, and the mechanical property of the cross test piece can be effectively tested in the high temperature environment and under the two-way loadingcondition.

The invention relates to a road test structure and method of automobile skylight wind vibration noises. The test structure comprises a wind speed signal acquisition unit and an automobile speed signal acquisition unit. The test structure is characterized in that the output ends of the wind speed signal acquisition unit and the automobile speed signal acquisition unit are respectively connected with the input end of a real speed generating unit; and the output end of the real speed generating unit is divided into two paths, wherein one path is connected with the input end of a signal processing unit through the real speed generating unit, and the other path sequentially passes through an in-automobile cavity, a noise generating unit and a noise acquisition unit, and then is connected to the input end of the signal processing unit. With the test structure adopted, the objective data of the automobile skylight wind vibration noises can be obtained in an actual road in most direct manner, and the test data can be analyzed through acoustic software, and a frequency characteristic which with changes speed and assist in generating maximum wind vibration noises is calculated; and the reading of an anemometer in a uniform working condition is determined as real speed corresponding to wind vibration noise generation and is adopted as objective evaluation. The method has the advantages of simple operation, low cost, strong applicability and the like.

The present invention relates to novel peptides that are highly biologically and pharmacologically active as therapeutic agents for the treatment of numerous lung diseases or lung and/or bronchi related diseases, especially chronic obstructive pulmonary disease (COPD), cystic fibrosis (CF), and Bronchiolitis obliterans (BO). The synthetic peptides according to the invention are derivatives of vasoactive intestinal peptide (VIP) and show enhanced physical, pharmacological and biological/therapeutic properties compared to VIP.

The invention discloses a BIST (Built-in Self-test) automatic test circuit and a test method aiming at a PHY (Physical Layer) high-speed interface circuit. The test circuit comprises a BIST control circuit, an analog circuit parameter control scan chain, two selectors and a test result output circuit, wherein the BIST control circuit has the functions of automatically generating control signals and data and comparing results. The test method comprises the following steps of: (1) entering into an ATPG (Automatic Test Pattern Generation) scan mode; (2) configuring the parameter of the PHY high-speed interface circuit and the parameter of a PLL (Phase Locked Loop) circuit through the scan chain; (3) entering into a PHYBIST test mode; (4) starting to automatically generate a test vector, and inputting a measurement vector to the PHY high-speed interface circuit; (5) returning the data in a built-in loopback way, and comparing the correctness of the returned data; and (6) outputting a test result. According to the test circuit disclosed by the invention, the PHY high-speed interface circuit can be effectively tested under an actual speed mode, the cost of hardware is low, the control is simple, and the complex degree and the test time of the test vector used by ATE (Automatic Test Equipment) are reduced.

The invention discloses a method and a device for checking a storage battery internal resistance tester. A checking circuit is formed by connecting a standard rheostat, an alternating/direct current meter, a standard direct current source, a frequency meter, an emergency stop button, a changeover switch and the storage battery internal resistance tester to be checked, the storage battery internal resistance tester which employs a direct current discharging method and/or an alternating current impedance method is checked, and resistance relative errors and/or frequency relative errors of a product to be checked are obtained. By adoption of the method and the device, checking of the measuring accuracy of a storage battery internal resistance tester product in delivery and using periods can be accomplished. The invention has the characteristics of simplicity and convenience for operation and accurate and reliable check result.

The invention puts forward a CNI (Communication, Navigation and Identification) modeling system, and aims to provide a modeling system which supports a CNI system statistic physical environment, a dynamic processing command and an operation process when a hardware environment is not provided with conditions. The system is realized through the following technical scheme: an integrated data routingmodule is accessed into real physical equipment through the Ethernet; a physical resource modeling module provides the physical equipment environment static information modeling of nodes, communication links and configuration attributes; a dynamic processing modeling module provides a command processing action template code generation function, a user adds a specific action processing function code according to requirements to construct a command processing action library; a model static and dynamic association module associates nodes in the physical resource model with a dynamic simulation processing command to establish a dynamic and static processing information association relationship; and a system dynamic operation simulation module generates a process model file by a CNI system state change process set by the user, and the model file is executed through a process analysis driving engine to realize the dynamic operation simulation of the system equipment.