59results about How to "Simple test method" patented technology

The invention discloses a thermal tracing test device and method for determining the comprehensive hydrogeological condition of an aquifer, and the device comprises a water storage system, a medium groove, a heating system, and a distributed optical fiber data collection system. The device is simple in structure and intelligent and convenient to operate, instantaneous / continuous linear heat source excitation can be achieved through the heating system, and the water pressure and temperature change conditions of all positions are monitored in real time through the distributed optical fiber data acquisition system; the comprehensive hydrogeological parameters such as the flow velocity, the flow direction, the permeability coefficient, the thermal diffusion coefficient, the thermal capacity and the heat conductivity coefficient of underground water are studied, the heating system and the distributed optical fiber data acquisition system can be used for indoor tests and field tests, operation is easy and convenient, data precision is high, and practicability is high.

The invention relates to a fatigue crack prefabricating method suitable for a TiA1 alloy CT sample, which comprises the following steps of: sequentially generating non-penetrable fatigue cracks with certain lengths on two side surfaces of the CT sample through asymmetric loading under sine cyclic load by utilizing the crack propagation resistance characteristic under plane stress, and then generating a middle crack through symmetric loading, so as to prefabricate the fatigue cracks on the two side surfaces of the CT sample. And connecting the non-penetrable cracks on the two sides to form penetrable fatigue cracks, and expanding the cracks to the required length. Compared with a traditional method for directly prefabricating the penetrable fatigue crack, the method is easy to operate, high in success rate and high in efficiency, the fatigue crack with the needed length can be rapidly and accurately prefabricated, and the defect that when a TiA1 alloy CT sample uses a traditional fatigue crack prefabricating method, due to the fact that force is too large, the TiA1 alloy CT sample is suddenly unstable and fractured is overcome; or cracks cannot be generated for a long time due to too small force.

The invention discloses a cooling effect stability evaluation method for an aluminum alloy wheel hub low-pressure casting cooling system, and relates to the technical field of automobile wheel hub low-pressure casting. Comprises: selecting a mold object; arranging a thermocouple, and collecting temperature data; changing the initial temperature of the temperature measuring point of the thermocouple, and further acquiring real-time temperature data; feature temperature data are extracted, and linear regression of initial temperature-feature temperature values is carried out; and carrying out temperature data fluctuation analysis, and quantitatively measuring the cooling effect stability of the cooling system according to the maximum value and minimum value indexes of the discrete point deviation fitting curve. The stability of the cooling effect of the cooling system can be visually reflected, the problem that testing cannot be achieved under the condition that the initial temperature of the mold is consistent is solved, and by analyzing the relation between the initial mold temperature and the characteristic temperature value and selecting the temperature value on the temperature curve before mold opening as the characteristic temperature value, the testing accuracy is improved. The complexity of curve analysis is avoided, and the method is worthy of industrial popularization and application.

The invention provides a ground resistance testing method and device suitable for a railway system, and the method comprises the steps: determining a first inter-electrode voltage value between a tested ground grid and a first potential electrode based on a first testing loop and excitation current provided for the first testing loop, and determining a second inter-electrode voltage value between a tested ground grid and a second potential electrode based on a second testing loop; and determining a second inter-electrode voltage value between the tested ground grid and the second potential electrode according to the first inter-electrode voltage value provided for the first test loop and the excitation current provided for the second test loop, and determining the grounding resistance of the tested ground grid and the soil resistivity of the tested ground grid based on a predetermined correction factor, the excitation current value, the first inter-electrode voltage value and the second inter-electrode voltage value. The compensation resistance is counteracted by adding the test electrode and introducing the correction factor, so that the test method of the grounding resistance is simplified. And the zero potential region does not need to be repeatedly measured and searched, so that errors caused by manually searching the zero potential region are avoided, and the accuracy of the grounding resistance test is improved.

The invention discloses a carbon fiber wear resistance testing device and method.The carbon fiber wear resistance testing device comprises a testing platform, a moving platform, a left side fiber fixing clamp, a right side fiber fixing clamp, a balance weight and a traction rope, and the left side fiber fixing clamp and the right side fiber fixing clamp are arranged at the left end and the right end of the top surface of the testing platform respectively; the motion platform is arranged on the test platform, a friction rod group is arranged on the motion platform, a moving block is arranged at the top of the friction rod group, the friction rod group moves up and down, a to-be-tested carbon fiber penetrates through the friction rod group, and two ends of the to-be-tested carbon fiber are fixedly connected with the left fiber fixing clamp and the right fiber fixing clamp respectively and are tensioned by a counterweight; and the horizontal movement and the vertical movement of the friction rod group can be respectively used for carrying out transverse and longitudinal wear resistance tests on the carbon fibers. According to the invention, transverse and longitudinal wear resistance tests can be simultaneously carried out on the carbon fibers, and complex wear resistance test conditions are provided for the carbon fibers, so that powerful evaluation parameters are provided for research and development of the carbon fibers.

The invention provides a preparation method and application of a cobalt-aluminum hydrotalcite loaded noble metal catalyst rich in metal defects. The preparation method comprises the following steps: dissolving a cobalt source, an aluminum source, urea and ammonium fluoride in an aqueous solution, and carrying out hydrothermal reaction to obtain a cobalt-aluminum hydrotalcite precursor; the preparation method comprises the following steps: preparing a precursor, treating the precursor with an alkaline solution to obtain a defect-rich cobalt-aluminum hydrotalcite carrier, and dipping the defect-rich cobalt-aluminum hydrotalcite carrier in a noble metal solution to obtain the defect-rich cobalt-aluminum hydrotalcite supported noble metal catalyst. The preparation method is simple and high in operability, the noble metal can be anchored on the defect-rich cobalt-aluminum hydrotalcite carrier, and the defect-rich cobalt-aluminum hydrotalcite loaded noble metal catalyst can be used as a bifunctional catalyst through the synergistic effect of the noble metal and the cobalt-aluminum hydrotalcite carrier, has excellent electro-catalytic performance, and can be used for preparing a catalyst for preparing the cobalt-aluminum hydrotalcite loaded noble metal catalyst with the defect-rich cobalt-aluminum hydrotalcite loaded noble metal catalyst with the defect-rich cobalt-aluminum hydrotalcite loaded noble metal catalyst. And the electrolytic tank assembly process is simplified, and the production cost is reduced.

The invention discloses an optical fiber geometric parameter testing device and method, and belongs to the technical field of optical fiber manufacturing. According to the testing device, a certain angle is formed between the irradiation direction of the illumination unit and the emergent end face of the to-be-tested optical fiber, and the illumination unit illuminates the emergent end face, so that the emergent end face is clearly imaged in the image acquisition unit; the parameter resolving unit is used for judging the boundary of the core layer and the cladding layer according to whether the difference between the gray values of the adjacent pixel points in the end face image is larger than a preset gray threshold value or not, and therefore optical fiber geometric parameters are deduced. According to the testing device, the imaging effect of the optical fiber end face image is enhanced by improving the illumination unit for illuminating the optical fiber emergent end face, and then the algorithm for testing the optical fiber geometric parameters is improved for the end face imaging effect. Therefore, the geometrical parameters of the optical fiber can be obtained without arranging an incident light source at the incident end of the to-be-measured optical fiber, and compared with the prior art, a series of components such as the incident light source and an incident collimating lens are reduced, so that the complexity of the device is reduced.

The invention provides an aircraft flight control system comprehensive automatic test platform and method based on a network architecture. The platform comprises automatic test software, test control software, test control simulation equipment and a flight control subsystem airborne finished product to be tested. The test control simulation device comprises a comprehensive test control simulation device and a plurality of flight control subsystem test control simulation devices. Each flight control subsystem test control simulation device is connected with the corresponding flight control subsystem airborne finished product and is used for sending configuration information to the flight control subsystem airborne finished product and receiving acquisition information provided by the flight control subsystem airborne finished product; the test control software comprises ground maintenance data acquisition software, comprehensive test control software and flight control subsystem test control software; the test control software is connected with the test control simulation equipment, sends a control instruction to the test control simulation equipment, and receives response information of the control instruction sent by the test control simulation equipment; the ground maintenance data acquisition software is connected with the comprehensive test control simulation equipment and the plurality of flight control subsystem test control simulation equipment and is used for receiving acquired information; and the automatic test software is connected with the test control software, sends a control instruction to the comprehensive test control software and the flight control subsystem test control software, obtains a response, and obtains acquisition information sent by the ground maintenance data acquisition software. The comprehensive test technology of multi-bus acquisition and lumped control is combined, the establishment of the comprehensive test platform of the aircraft flight control system is optimized and completed, and the automatic comprehensive control and detection of the aircraft flight control system are realized.

The application discloses a kind of electromagnetic relay electromagnetic attraction test method and positioning fixture, the method is positioned by positioning fixture to the electromagnetic part of the electromagnetic relay to be measured, the clearance between armature and yoke of the electromagnetic part of the electromagnetic relay to be measured is positioned in the clearance range required by the electromagnetic relay to be measured;Electromagnetic attraction is generated by the coil of electromagnetic part to load excitation, and armature is operated, the excitation value corresponding to the moment of armature operation is compared with threshold value gradually increasing from small by coil loading excitation, meets threshold value requirement, and the electromagnetic attraction of the electromagnetic part of the electromagnetic relay to be measured meets the requirement.The electromagnetic attraction test method used in the present application positions the electromagnetic part of the electromagnetic relay to be tested, and the clearance between armature and yoke is the clearance required by the product, the force tested is more in line with actual production, and whether the electromagnetic attraction of magnetic circuit part meets the requirement of final product can be effectively judged.

The invention discloses a method for rapidly measuring the pH value of a trace PET probe through a spectrum method and application of the method. The method has the advantages that the using amount of a sample is extremely small, a standard spectrum curve is drawn after experimental conditions are optimized, the measuring steps are simple, the measuring result is high in accuracy and sensitivity, and meanwhile microfluidic automatic online measuring can be achieved. The PET tracer agent has the characteristics of small synthesis amount, high price, radioactivity and the like, so that the PET tracer agent has huge application value in the aspects of testing the use amount of samples, simplifying detection, realizing automatic testing and the like.

The invention relates to a whole satellite verification method and system for electromagnetic compatibility of an SAR load and satellite platform radio frequency equipment. The method comprises the following steps: respectively carrying out power-on self-test on the satellite platform radio frequency equipment, load comprehensive electronics, the SAR load and a system consisting of the satellite platform radio frequency equipment and the load comprehensive electronics; a beam pointing angle of an SAR load and a beam scanning angle of satellite platform radio frequency equipment are set, receiving noise of the SAR load is recorded, the influence condition of the satellite platform radio frequency equipment on the SAR load can be determined according to a noise test result, and the influence of the satellite platform radio frequency equipment on the SAR load is quantitatively verified by replacing a full array with an SAR antenna sub-array, so that the influence of the satellite platform radio frequency equipment on the SAR load is verified. Therefore, the problem that the SAR load influence cannot be quantified during the whole-satellite test is solved, the verification of the whole-satellite radio frequency compatibility is ensured, the risk and cost of whole-satellite development are reduced, and meanwhile, the progress requirement is met.

The present invention belongs to the technical field of fluid blocking test, and specifically relates to a compound damping check valve fluid blocking test system and a test method thereof. The present invention includes a first burst pipe simulation component and a second burst pipe simulation component, the inlet of the first burst pipe simulation component is connected to the valve body inlet of the angle damping check valve, the valve body outlet of the angle damping check valve is connected to the outlet of the accumulator through the switch valve SV6, and the inlet of the accumulator is respectively arranged with a gas branch and a liquid branch; the inlet of the second burst pipe simulation component is connected to the valve body inlet of the straight-through damping check valve, and the valve body outlet of the straight-through damping check valve is connected to the outlet of the accumulator through the switch valve SV7; the pressure regulating chamber of the second burst pipe simulation component is connected to the gas source through the switch valve SV2 and the regulating valve CV2 in sequence. The present invention can simultaneously achieve the online test effects of the diagonal damping check valve and the straight-through damping check valve under the same working conditions, and the test data calculation accuracy is higher.

The present application relates to the technical field of automobile emission testing, and specifically discloses a testing method for real-time determination of excessive fueling emission of a vehicle, which comprises collecting vehicle data by using a vehicle-mounted emission detection device; arranging the vehicle data to generate a corresponding fueling emission test condition set; sorting each fueling emission test condition in the fueling emission test condition set according to the order of fueling time; calculating the pollutant emission limit value under the single fueling amount in each fueling emission test condition and the final result value of the pollutant emission test during the fueling process; and comparing and determining whether the current corresponding fueling emission test condition is excessive according to the calculated pollutant emission limit value and final result value. The present application can solve the problem that the vehicle cannot be determined and warned in time when the vehicle fueling process causes excessive pollutants.

The embodiment of the application provides a kind of inter-satellite laser link ground verification test system and method, it is related to laser communication technical field, including: laser terminal module, for emitting first light beam to parallel light pipe module, and receiving second light beam returned by parallel light pipe module;Integrated light control module includes: light source unit for emitting second light beam to parallel light pipe module, light spot measurement unit for controlling light switch unit based on received first light beam, light switch unit for switching the on-off state of the light path of light source unit to parallel light pipe module under the control of light spot measurement unit;Parallel light pipe module includes: transceiver lens group for transmitting first light beam to energy beam splitter, energy beam splitter for transmitting first light beam to light spot measurement unit after splitting, and second light beam is sent to laser terminal module by transceiver lens group, and test system structure is simple and measurement accuracy is high.

The invention provides a method for testing temperature distribution of a heating cavity of an appliance, and relates to the field of cigarettes, and the method comprises the steps that temperature indicating paper is used for being attached to the inner circumferential wall of the heating cavity, and the temperature indicating paper is provided with marks used for indicating all positions of the inner circumferential wall of the heating cavity on the temperature indicating paper; after the temperature indicating paper is attached to the inner peripheral wall of the heating cavity for a preset time, the temperature of the corresponding position can be read according to the color change of the surface of the temperature indicating paper, so that the temperature distribution in the heating cavity of the appliance is effectively judged; according to the testing method, the temperature indicating paper is attached to the inner peripheral wall of the heating cavity for testing, and the total space temperature in the heating cavity can be completely obtained only through one-time testing.

The present application relates to the technical field of polysaccharide analysis, and in particular to a method for detecting the phenyl content of polysaccharide microspheres coupled. The method comprises the following steps: mixing polysaccharide microspheres coupled with functional groups and a first acid agent to break the ether bond in the functional group to obtain a dissociation solution; mixing the dissociation solution and a first solvent to obtain a sample to be tested; mixing a standard substance and a second acid agent, and diluting the obtained mixed solution with a second solvent to prepare standard solutions of different concentrations; testing the absorbance values ​​of the standard solutions of different concentrations and the sample to be tested at a wavelength λ, and drawing a standard curve according to the concentration and absorbance values ​​of the standard solutions of different concentrations, and calculating the concentration of phenyl in the sample to be tested according to the standard curve. The above method can overcome the problem of the difficulty in quantitative detection of phenyl functional groups on polysaccharide microspheres, the structural characterization of polysaccharide microspheres, and the front-end structural design of polysaccharide microspheres, and the testing method is simple.

This application discloses a method and apparatus for testing the tension of metal braided wires. The method includes: constructing a tension region for the braided threads in the metal braided wire; determining the lead-in position, inflection point position, and lead-out braiding position within the tension region; determining the reference tension of the braided threads within the tension region; obtaining a target angle between the reference direction and the target direction in the braiding mechanism, using the line connecting the lead-in position and the inflection point position as the reference direction and the line connecting the inflection point position and the lead-out braiding position as the target direction; and determining the target tension based on the target angle and the reference tension. The method for testing the tension of metal braided wires in this application is simple and can accurately calculate the corresponding tension using the inclination of each braided thread. This allows for the specific numerical value to characterize the tension, enabling precise control of the tension of each braided thread during the metal braiding process.

The invention discloses an on-site evaluation method and system for safety of a sensing system of an automatic driving automobile. The method comprises the following steps: acquiring an automatic driving scene for testing; determining a perception problem corresponding to the accident based on the automatic driving scene; determining testable parameters based on the perceptual problem; determining an accident occurrence degree grade and an accident severity grade based on the perception problem; determining the scene risk number of all perception problems based on the accident occurrence degree grade and the accident severity grade; establishing a sensing system safety evaluation table based on the scene risk number and the accident severity level; and performing safety evaluation on the to-be-tested sensing system based on the testable parameters and the sensing system safety evaluation table. The system overcomes the limitation of virtual simulation test, whole vehicle test and single sensor test of an automatic driving vehicle, and achieves the convenient, comprehensive and accurate evaluation of the safety of a sensing system.

The invention relates to the technical field of optical module testing, in particular to a method for saving optical module testing equipment, which comprises the following steps of: S1, controlling an analog switch of an optical module through a single chip microcomputer, switching a signal to an MCB board by the analog switch when the optical module needs to be tested to transmit the signal, and connecting the signal to an optical eye diagram instrument by the MCB board through a coaxial cable, when the optical eye diagram instrument receives a clock synchronous with the signal of the transmitting end of the optical module, the transmitted signal can be analyzed and tested; and S2, when the optical module works normally or the optical module does not need to be tested, the analog switch is controlled through the single-chip microcomputer, and a test clock of the DSP is output and switched to a GND end. Compared with the prior art, the method for saving the optical module test equipment has the advantages that the difficulty of an optical module test system is reduced, the production cost of the optical module is greatly reduced, and the test method is simple, easy to implement and convenient for batch production.

The invention discloses a vehicle soft switch memory test method and system and a vehicle, and belongs to the technical field of vehicle testing, and the method comprises the steps: setting the initial states of all soft switches of a vehicle; collecting and recording initial state values of all soft switches of the vehicle machine; operation is carried out according to a preset test working condition, and current state values of all the tested soft switches are obtained; and comparing the obtained initial state value with the tested current state value, and outputting a test result. According to the invention, the problems of low efficiency and easy misjudgment of the conventional test means for the soft switching memory of the vehicle-mounted infotainment system are solved.

The invention discloses a method for determining aldehyde compounds in epoxypropane, which belongs to the field of liquid chromatography detection, and is characterized by comprising the following four steps: step 1, equipment selection: a high performance liquid chromatograph is provided with a UV detector, step 2, standard curve drawing: (formaldehyde, acetaldehyde and propionaldehyde), step 3, formaldehyde, acetaldehyde and propionaldehyde content determination in a sample, and step 4, aldehyde compound content determination. And 4, taking the to-be-detected solution and the blank solution epoxypropane as important chemical raw materials, solving the problems of low response, incomplete analysis types and low formaldehyde gas chromatography accuracy of the existing gas chromatography for detecting aldehydes, and being mainly applied to the aspect of detecting aldehyde compounds in epoxypropane.

The application discloses an electrochemical active specific surface area test method, and relates to the technical field of battery testing. The electrochemical active specific surface area test method comprises the following steps: providing a battery with an electrode sheet to be tested; determining a voltage range in which the battery performs double-layer behavior and a plurality of scanning speeds corresponding to the voltage range; obtaining CV curves of the plurality of scanning speeds in the voltage range; obtaining a plurality of integral areas corresponding to the plurality of scanning speeds according to the plurality of CV curves; one-to-one corresponding the plurality of scanning speeds and the plurality of integral areas to form a plurality of coordinate points, linearly fitting the plurality of coordinate points, and obtaining the slope of a fitted straight line; and determining the electrochemical active specific surface area of the electrode sheet to be tested according to the slope. The application can improve the accuracy of the electrochemical active specific surface area test of the electrode sheet.

The invention discloses a pilot operated safety valve water pressure strength test tool and method, belongs to the field of valve test, and aims to solve the problem that the inlet side and the outlet side of a pilot operated safety valve can be separately subjected to water pressure strength test and are easy to operate. The tool comprises a secondary pilot valve sealing cover, the left end face of a sealing ring abuts against the right end face of the secondary valve cover in a sealing mode, the right end of a second connecting rod is connected with the sealing ring in a sealing mode, the left end of the second connecting rod is detachably connected with the secondary pilot valve sealing cover, and the secondary pilot valve sealing cover and the sealing ring are tensioned through the second connecting rod. And the secondary pilot valve sealing cover seals the first pressure relief opening. According to the invention, one side of the medium inlet and one side of the medium outlet can be effectively isolated, and a high-pressure water pressure strength test is carried out on one side of the medium inlet; the water pressure strength test of the low-pressure part on the medium outlet side and the medium inlet side can be carried out together, the use operation of the test tool and the test method are simple, the operation is simple and convenient, and the safety is high.

The invention discloses a hydropower station stability remote test method and device and a storage medium. The method comprises the steps that operation information of a generator set is collected in real time; the collected information is remotely transmitted; the company-side big data center processes the received data through a preset algorithm, including the steps of cleaning the data, analyzing the data and modeling the data; according to the processed information, the stability level of the water-turbine generator set is evaluated, and the evaluation is based on whether stability key parameters measured by a water level lifting test, a variable rotating speed test, a variable excitation test and a variable load test include a vibration value, a throw value and a pressure pulsation value are located in a stable operation area or not. The test efficiency and accuracy are improved; meanwhile, the test cost is reduced, and the damage of a traditional test method to equipment is avoided.

This invention discloses a method, apparatus, equipment, and storage medium for testing the stress direction of a cylindrical surface with zero axial deformation, relating to the field of oil and gas field development engineering technology. The method includes the following steps: S1, taking a cylindrical core sample and obtaining its radius; S2, attaching strain gauges to both ends of the core sample, selecting a radius passing through the center of the end face as the starting point, and recording the angle between the strain gauge and this radius; S3, after attaching the strain gauges, covering the end face of the core sample with a uniform coating to create a proportionally enlarged cylindrical sample for testing, electrically connecting the strain gauges to a sensor; S4, applying hydrostatic pressure to the cylindrical sample in the radial direction and recording the data changes on the stress sensor; S5, based on the strain test results in S4, obtaining the two principal strain directions of the cylindrical sample. This method uses a small number of strain gauges to obtain the stress direction of the core sample on the horizontal plane, and the results are reliable, convenient, and low-cost.

The invention belongs to the technical field of fluid blocking tests, and particularly relates to a test method of a pipe explosion simulation device based on a fluid blocking test. The tube bursting simulation device comprises an outer tube body and a crushing diaphragm located in a tube cavity of the outer tube body, the tube bursting simulation device further comprises a bursting disc, the bursting disc and the crushing diaphragm are sequentially arranged along the tube cavity of the outer tube body, and therefore a closed pressure adjusting cavity is formed in the portion, between the bursting disc and the crushing diaphragm, of the tube cavity of the outer tube body. The pressure adjusting cavity is communicated with a pressure air source or a pressure liquid source through a flow channel penetrating through the pipe wall of the outer pipe body. The device has higher controllability on pipe explosion pressure and pipe explosion time, and has the advantages of simplicity, convenience and rapidness in use and compact and reasonable structure.

The present invention belongs to the technical field of fluid blocking test, and specifically relates to a single damping check valve fluid blocking test system and a test method thereof. The system includes a damping check valve and a burst pipe simulation component, the inlet of the burst pipe simulation component is connected to the valve body inlet of the damping check valve, the valve body outlet of the damping check valve is connected to the outlet of the accumulator via the switch valve SV6, the inlet of the accumulator is respectively arranged with an air branch and a liquid branch, the air branch is connected to the air source via the regulating valve CV1, and the liquid branch is connected to the water storage container via the switch valve SV4, the water pump, and the switch valve SV3; the pressure regulating chamber of the burst pipe simulation component is connected to the air source via the switch valve SV1 and the regulating valve CV2 in sequence; the system also includes a bridging water circuit. The system uses the built-in burst pipe simulation component to accurately control the burst pipe pressure and storage time in the pipeline, which can ensure the high accuracy of the damping check valve test data while ensuring cost-effectiveness.