129results about How to "Simple test method" patented technology

The invention discloses a lithium ion cell nondestructive lithium precipitation detection method, which specifically comprises the following steps: at a certain temperature, determining the charging open circuit voltage OCV of a normal lithium precipitation-free cell and a lithium ion battery to be detected, and generating an SOC-OCV table; the method comprises the following steps: carrying out charge-discharge circulation on a lithium ion battery at a certain charge rate and temperature to obtain a voltage-temperature rise curve, and roughly determining a voltage interval of stable heat production of a battery cell based on the voltage-temperature rise curve; a charging dQ / dV curve is obtained based on an incremental capacity method, the inflection point is accurately determined in the voltage interval of stable heat production of the battery cell in the dQ / dV curve, and the polarization heat production value corresponding to the interval from the inflection point to the charging end is calculated; and carrying out polarization heat proportion calculation on the batch of battery cells, and screening out the battery cells lower than a threshold value based on an outlier method as lithium precipitation battery cells. According to the method, lithium precipitation detection can be carried out under the condition that a sensor and a reference electrode are not additionally arranged, and risk assessment is carried out on early lithium precipitation of the high-capacity lithium ion battery cell.

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 provides a device and a method for universally testing the performance of a silicon optical chip and a gyroscope. The device comprises a chip and gyroscope measurement and control module, an external light source module, an external phase modulator, an optical fiber loop and a light source module, wherein the chip and gyroscope measurement and control module comprises a driving and temperature control unit, a power supply control unit, an electric switch control unit, an optical switch control unit, a signal generation unit and an acquisition and control unit and is used for testing instruction processing and data processing, and the light source module is used for providing stable optical power input for a silicon optical chip without a light source. The analog electric switch controls the signal generation unit to output signals which are respectively applied to the phase modulator on the silicon optical chip or the external phase modulator, and the four optical switches form three test channels and are communicated with the external phase modulator and the optical fiber loop to form a gyroscope optical path. According to the invention, the universal test of the performance of different types of silicon optical chips and gyroscopes can be realized, and the accuracy and timeliness of the test are ensured.

The utility model relates to a pilot test device for high-voltage electrostatic modification of crude oil, which is characterized in that the pilot test device for high-voltage electrostatic modification of crude oil is skid-mounted and is arranged above a movable underframe; the utility model discloses a crude oil high-voltage electrostatic modification pilot test device which comprises a detection meter, a constant-temperature assembly, a stirring kettle, a delivery pump, a high-voltage processor, a high-voltage power supply, a crude oil collector, a control electric box and an electromagnetic valve, by using the skid-mounted crude oil high-pressure modification experimental device, in oil pipelines with different viscosities or contents, the three different forms of high-pressure processors also improve the variable condition of the test, the actual use effect of the high-pressure processors in various forms is analyzed, and the overall test efficiency of the experimental device is improved.

The invention belongs to the field of experimental research of rock seepage, and provides a non-linear seepage flow velocity equivalent testing device for simulating fractured rock mass, which comprises a water storage container, a water supply part, a pressure measuring part, a pore matrix part and a through fracture, the output end of the water supply part is communicated with the water storage container, and the water storage container is communicated with the pressure measuring part and the pore matrix part; the pore matrix part is filled with a pore matrix, the pore matrix is of a hollow cylindrical structure, the hollow part of the pore matrix forms the through crack, and the through crack is blocked or partially filled; the pore matrix part is provided with a drainage chamber, and a water source in the water storage container enters the drainage chamber through the pore matrix; according to the method, the change condition of the flow velocity of the rock mass with the through cracks at the through cracks can be effectively measured, the seepage flow containing the through cracks can be accurately calculated, and the change rule of the non-linear seepage flow velocity is provided.

The invention discloses an energy self-balancing flexible straight valve energy release branch dynamic performance test method and related device, and the method comprises the steps: presetting test parameters of a test sample valve after the test sample valve is connected to a test system, and enabling the test sample valve to operate in a maximum current continuous operation condition through adjusting the operation parameters; starting an energy release branch dynamic characteristic test, and increasing the voltage of a test object valve sub-module by adjusting the modulation wave amplitude of a bridge arm where an accompanying test valve is located; switching on and switching off an energy release branch according to the average voltage of the sample valve sub-module, and simultaneously adjusting a phase angle and a modulation wave amplitude value of a bridge arm where an accompanying test valve is located; repeating the two steps according to the average absorption energy and the maximum absorption energy of the energy release resistors of the sub-modules; and finally, judging a test result according to the sub-module voltage unbalance degree and the resistance absorption energy unbalance degree. Therefore, the problem that the existing operation test system is easy to oscillate during the whole action period of the energy release branch, so that the system protection trips, and finally the test fails is solved.

The invention discloses a system and a method for separating ammonia, ethanolamine and water, which belong to the technical field of ammonia still separation, and are characterized in that a shell-and-tube heater is arranged in a flash tank, a reactor a and a reactor b are respectively arranged on two sides of the flash tank, the reactor a is communicated with the flash tank through a pipeline a, the reactor b is communicated with the flash tank through a pipeline b, and the reactor b is communicated with the flash tank through a pipeline b. The problems that separation is difficult, the separation cost is high and the operation period is short are solved, the problems that an existing plate tower is low in separation efficiency and high in energy consumption, silk screen filler is prone to corrosion and the operation period is short are solved, and the device is mainly applied to separation of ammonia, ethanolamine and water.

The utility model relates to the technical field of tunnel construction and underground space engineering construction, in particular to a TBM (Tunnel Boring Machine) hob performance test detection device based on linear rock breaking, which comprises a base, a frame is arranged on the base, and a rock breaking mechanism, a rock box mechanism, a rock breaking hob component and a rock box body are arranged in the frame. A load sensor is fixed between the tool support and the hydraulic oil cylinder, and a three-way force sensor is fixed between the tool support and the tool apron; a confining pressure sensor is arranged on the rock box body, a weighing device is arranged at the bottom end in the frame, and a photoelectric temperature integrated sensor is arranged on the weighing device. By monitoring various performance parameters such as hob load, temperature and abrasion in real time, analyzing hob diameter and weight changes, analyzing rock breaking effects of different hobs and researching a hob rock breaking mechanism, quantitative evaluation of performance differences of different hobs is achieved, reference is provided for manufacturers to manufacture and optimize hob performance, and the hob rock breaking performance evaluation device is suitable for large-scale popularization and application. And key guidance is provided for selection of tunnel project hobs and selection of construction parameters.

The invention relates to the field of testing, and discloses a load cabin air tightness testing method, device and system, and the method comprises the steps: obtaining a load cabin model constructed based on multi-physics field simulation, a plurality of groups of pressure drop fitting curves under different simulation initial air pressures of the load cabin model obtained through simulation testing, and a plurality of groups of corresponding air pressure change rule curves under variable temperature conditions; a pressurization test and a pressure maintaining test are conducted on the entity load cabin, and the actually-measured initial pressure, the actually-measured initial temperature and the actually-measured pressure, the actually-measured temperature and the actually-measured pressure drop corresponding to different pressure maintaining test durations are obtained; analyzing a plurality of groups of pressure drop fitting curves and a plurality of groups of air pressure change rule curves under variable temperature conditions, and determining theoretical pressure drops under corresponding pressure maintaining test durations in combination with a Lagrange interpolation method; and when the actually measured pressure drop does not exceed the theoretical pressure drop, determining that the air tightness of the entity load cabin is normal, otherwise, determining that the air tightness is abnormal. The test cost is reduced, the test efficiency is improved, the test is not limited by the environment temperature condition any more, and the test flexibility is improved.

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 relates to the technical field of vehicle safety belt testing, in particular to a vehicle safety belt testing system and method. The test system comprises a bearing module which is fixedly arranged and used for bearing a dummy and a safety belt; the traction module is used for dragging the dummy to simulate inertia force of the dummy in the braking process; and the data acquisition module is used for acquiring test data in the test process. According to the test method, the test system is used, the inertia force of the dummy in the braking process is simulated through the traction force generated by the traction module on the dummy, a moving mechanism and a large test site are not needed, operation and use are convenient, the test efficiency and test repeatability are high, the test cost is low, and the test system has great popularization value.

The invention provides a tire assembly modal test method, and belongs to the technical field of tire acoustics. According to the tire assembly modal test method, the modal parameters of the tire can be analyzed by measuring the modal shape of each order of the tire, and data support is provided for acoustic development of the tire. The test is suitable for passenger car tires and minibus tires (LT / RV). And the frequency response function represents the relation between steady-state output and input of the test system under the given frequency. The relation specifically refers to a function relation between the ratio of the output amplitude to the input amplitude and the input frequency and a function relation between the output phase difference and the input phase difference and the input frequency. Therefore, the test method is simplified, the test process is standardized, the test efficiency is improved, and various data of the tire can be quickly subjected to experimental acquisition, so that whether the tire is qualified or not can be known, and the product improvement direction can be well determined in the subsequent tire production.

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 discloses a device for pre-embedding distributed optical fibers in a similar material model and a use method, and belongs to the technical field of geotechnical engineering, the device comprises a similar material model frame, an optical fiber horizontal positioning mechanism, an optical fiber height positioning mechanism, a temperature-strain monitoring mechanism and a data acquisition and analysis system; protrusions at the two ends of the optical fiber horizontal positioning mechanism are clamped on the two sides of a front plate and a rear plate of the similar material model frame, the upper end of the optical fiber height positioning mechanism penetrates through an optical fiber positioning rod hole reserved in the optical fiber horizontal positioning mechanism, and the lower end of the optical fiber height positioning mechanism is connected with the temperature-strain detection mechanism. The temperature-strain detection mechanism is connected with the data acquisition and analysis system to reflect detection data; accurate positioning of the height, the length and the direction of the distributed optical fiber is achieved, the problems of damage, bending, displacement and the like of the distributed optical fiber in the pouring process are avoided, the testing method is simple, and the testing result is accurate and reliable.

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 present invention provides a test method for studying the shear mechanical properties of rock structural surfaces in combination with photoelastic tests, based on a photoelastic test platform and a direct shear instrument, the direct shear instrument comprising a base unit, a loading unit, a data monitoring and acquisition unit, a control unit and a shear box. The test method comprises the following steps: 1. Adjusting the direct shear instrument and installing the sample; 2. Adjusting the position of the shear box and preparing for the test; 3. Presetting target parameters and selecting a loading mode; 4. Applying a load and collecting test images and data; 5. Returning the direct shear instrument to its original position after the test and saving the data; 6. Image and data analysis. The test method can observe the changes in the stress field and strain field of the sample during the test in real time according to the collected stress optical images, loads, displacements and other test data, combined with preset target parameter values, draw corresponding load-displacement curves, and analyze the influence of different loading conditions on the shear mechanical properties and deformation characteristics of the rock structural surface.

The utility model discloses a test loading device for testing the bonding performance of reinforcing steel bars and concrete, and belongs to the technical field of performance testing of concrete structure test pieces. Comprising an external complex stress applying device, a horizontal counter-force structure, a horizontal fixing structure and an anchoring and drawing structure, the external complex stress applying device, the horizontal fixing structure and the anchoring and drawing structure are all located above the horizontal counter-force structure, and the external complex stress applying device is used for applying complex stress to a reinforced concrete test piece in the circumferential direction; before testing, the steel bar is placed in a corrosion pool to be corroded, the steel bar in the reinforced concrete test piece penetrates through the horizontal counter-force structure, and anchoring and drawing structures are installed at the free end and the drawing end of the steel bar. The device is small in size and weight, simple in testing method, easy to operate, good in flexibility and easy to carry. And the accuracy of a test result is improved. And the test of the bonding performance of the reinforced concrete test piece under the coupling action of external complex stress and steel bar corrosion is realized.

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 invention discloses a detection device and method for accurately measuring the closing time of a steam extraction check valve, belongs to the technical field of valve detection, and aims to solve the problem that the valve closing time of the steam extraction check valve is not accurately measured. The device comprises a fixing support, a suction cup, an electromagnet and a crane, a steam extraction check valve and the fixing support are arranged on a supporting body, a fixed pulley is arranged on the fixing support, a mounting frame is connected with a valve body, an angle sensor, a first travel switch and a second travel switch are mounted on the mounting frame, a pointer shaft is connected with a valve rod, and the angle sensor makes contact with the pointer shaft. When the valve is closed, the swing rod makes contact with the second travel switch, one end of the steel wire rope is connected with the valve clack, the other end of the steel wire rope bypasses the fixed pulley and is connected with the suction cup, the crane is connected with the electromagnet, and the suction cup is attracted to or separated from the electromagnet. Opening and closing positions and time are measured through the timer and the data acquisition device, the assembling and testing method is simple, operation is easy and convenient, safety is high, and measured data are accurate.

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 provides a dynamic detection method and system for internal temperature distribution of a heated cigarette, and relates to the technical field of cigarette burning and smoking index detection.The method comprises the steps that an actual measurement heating smoking set and a reference heating smoking set which are arranged in a set temperature measurement area in advance are used for heating an actual measurement cigarette and a reference cigarette clamped by the actual measurement heating smoking set and the reference heating smoking set respectively; wherein the actually measured heating smoking set and the reference heating smoking set adopt heating smoking sets of the same model, and the material of the reference cigarette has thermal stability within the heating temperature range of the heating smoking sets; smoking the actually measured cigarette and the reference cigarette by using a smoking machine; performing real-time temperature measurement on the actual measurement heating smoking set, the reference heating smoking set and the exposed ends of the actual measurement cigarette and the reference cigarette by using a non-contact temperature measurement device to obtain temperature data; and according to the temperature data, obtaining an actually measured dynamic cloud picture of the internal temperature of the cigarette. The internal temperature field of the heated cigarette in the heating process can be detected under the condition that the heating smoking set is not broken or intruded.

The present invention is applicable to the field of gas bearings, and discloses a testing device and a testing method. The testing device comprises a base, a fixed bracket assembly for supporting a cylinder, a detection assembly, a load loading assembly, a bearing air supply assembly and several groups of gas bearing screws. The gas bearing screws are installed at an air outlet, and the gas bearing screws are provided with throttle holes. Different groups of gas bearing screws have throttle holes of different diameters. The bearing air supply assembly is connected to the air inlet. The detection assembly comprises a flow meter, a pressure sensor and a tension pressure sensor. The flow meter is installed on the bearing air supply assembly. The pressure sensor measures the pressure change in the gas bearing cavity in real time. The tension pressure sensor measures the axial force of the piston under different working conditions. The load loading assembly comprises a first load applying assembly for applying a radial force to the piston and a second load applying assembly for applying an axial force to the piston. The testing device can test the performance of the gas bearing under different working conditions.

The invention relates to the technical field of agricultural product nutrition ingredient detection, in particular to a method for determining various phenolic acid compounds in germinated triticale, which specifically comprises the following steps: extracting a sample; drawing a standard curve; performing high performance liquid chromatography detection on the to-be-detected sample, calculating the concentration of each phenolic acid in the to-be-detected sample through an external standard method, and calculating the content of each phenolic acid compound in the to-be-detected sample according to a formula: # imgabs0 # omega is the content of the phenolic acid compound in the to-be-detected sample, and the unit is mu g / g; rho is the concentration of the detected component in the to-be-detected sample obtained from the standard curve, and the unit is mu g / mL; v is the volume of the added extraction solvent, and the unit is mL; m is the mass of the germinated triticale flour, and the unit is g. The method solves the problems that the contents of 11 phenolic acid compounds in the germinated triticale cannot be simultaneously and quantitatively detected and the used detection equipment is relatively expensive in the prior art, and has the advantages of simplicity, high efficiency, moderate price of the used detection equipment, low detection cost and the like.

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 application provides an interface testing method, device, equipment and storage medium, the method obtains the code of the interface to be tested; uses a branch traversal method to determine all business scenarios of the interface to be tested, wherein each branch corresponds to a business scenario; performs feature extraction processing on the code to obtain the feature value of each branch; performs screening processing in a preset database corresponding to the interface to be tested according to the feature value of each branch to obtain a value space; generates a request message for testing the interface to be tested according to the value space. The test data is taken from the current environment, and only the screening conditions of the test data need to be given, and the script can construct the request message by itself, without the need to maintain the test data itself, so as to achieve complete separation of code and data, with high test efficiency and low cost. At the same time, compared with the random automatic generation of test data or data-driven testing methods, the test data combines the characteristics of the interface to be tested, and the accuracy of the interface test is high.

The utility model discloses a device for realizing continuous collapse of a cantilever pile support foundation pit in a centrifuge test, and relates to the technical field of foundation pit support, the device comprises a plurality of support piles, all the support piles are pre-buried in a simulation preset position, each support pile is provided with a preset section, and each support pile is internally provided with an accommodating cavity; according to the utility model, through the cooperation of the support piles and the support shafts, the action of automatically destroying the plurality of support piles at the same time can be realized, specifically, all the support piles are pre-buried in a simulation preset position, and if a continuous collapse experiment needs to be carried out, the continuous collapse experiment can be carried out, so that the continuous collapse experiment can be carried out. During use, each supporting shaft only needs to slide to be separated from the corresponding containing cavity, and then soil at the preset position is simulated to apply pressure to all the supporting piles so as to drive each supporting pile to be fractured from the preset fracture surface at the same time.