668results about How to "Reduce testing costs" patented technology

The invention discloses a testing device, which comprises a platform, a supporting seat, a pressure applying rotating shaft and a driving part, and is characterized in that the platform is provided with a fixing part, and the fixing part is used for fixing an axial air foil bearing; the supporting seat is located above the platform and installed on the platform, a shaft hole is formed in the supporting seat, and the shaft hole is located over the fixing part and penetrates through the supporting seat in the vertical direction; the pressing rotating shaft is movably arranged in the shaft hole in a penetrating mode in the vertical direction, and the bottom of the pressing rotating shaft is used for being attached to the axial air foil bearing in a normal state; the driving part is in driving connection with the pressure-applying rotating shaft to drive the pressure-applying rotating shaft to rotate. According to the testing device, the axial air foil bearing can be rapidly tested, and the production requirement of large-scale mass production is met.

The application provides an ADAS controller test method, device, terminal and storage medium. The method comprises the following steps: based on setting environment information and setting target information, generating simulation target information required by a target test scene of a to-be-tested ADAS controller installed on a real vehicle; sending the simulation target information to each vehicle body CAN interface of the real vehicle, and receiving control information of the to-be-tested ADAS controller updated based on the simulation target information and / or first vehicle state information of the real vehicle; and generating a test report of the to-be-tested ADAS controller about the target test scene according to the control information and / or the first vehicle state information. The application can avoid collision caused by extreme working conditions, reduce collision risk, reduce test cost and improve test efficiency when testing the real vehicle function of the ADAS controller.

The invention discloses an electric arc additive thin-wall component strengthening and toughening method based on laser shock peening. The method comprises the following steps that a thin-wall test piece is prepared; planning an unstrengthened area and a plurality of laser shock strengthening sub-areas on the surface of the test piece; selecting a laser shock peening sub-region, selecting laser shock peening parameters for laser shock peening, and adjusting the laser shock peening parameters until the total thickness of the pore-free layer and the hardened layer meeting the target requirement is obtained, so as to obtain optimized laser shock peening parameters; and selecting a plurality of laser shock peening sub-regions, performing peening by adopting optimized laser shock peening, selecting annealing parameters for annealing treatment, and repeating the annealing parameter adjustment operation until the total thickness of the pore-free layer and the hardened layer meeting the target requirement is obtained, so as to obtain optimized annealing parameters. According to the method, the pore-free layer and the hardened layer with reasonable thicknesses are generated on the surface of the additive aluminum alloy thin-wall part, the near-surface layer strength of the thin-wall part is improved, and the strength and plasticity of the arc additive aluminum alloy thin-wall part are improved at the same time.

The present application relates to a kind of corrosion liquid and macro etching method for low alloy ultra-high strength steel, the volume concentration of nitric acid in its corrosion liquid is (1.2+1.4*CE)% to (1.5+1.8*CE)%, the volume concentration of low carbon alcohol is 40%~50%;Acid fluorine salt mass concentration is (1.0+1.4*ASI)g / L to (1.4+1.8*ASI)g / L, the mass concentration of thiourea or its derivative is (0.5+1.5*HDI)g / L to (0.8+2.0*HDI)g / L;The balance is water;CE=C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15, ASI=Nb+Ti+0.5* (V+Al), HDI=(C+Mn / 5+Cr / 3+Mo / 2+V / 2)*(1+Nb+Ti+B), above-mentioned element symbol is the mass percentage value of the element in the steel to be etched.The present application can solve the technical problems that the over-etching window of conventional etching liquid is difficult to control, weld and heat-affected zone is prone to over-etching, and corrosion duration control is seriously dependent on artificial experience, and the consistency of detection result is poor.

The utility model discloses a temperature pressure detection instrument, include: installation joint is installed on the test end pipeline, and the test core is installed on the installation joint, the temperature pointer subassembly is connected with through the temperature sensing component in the test core middle part, and the pressure pointer subassembly is connected with through the linkage amplification subassembly on one side of test core, the working medium in the pipeline or equipment flows in after in the utility model, and the temperature pointer subassembly is driven to rotate through the temperature sensing component, and the pressure pointer subassembly is driven to rotate through the linkage amplification subassembly, can detect pressure and temperature value simultaneously, and the relevant data is read on a dial simultaneously, and the detection cost is reduced effectively, and the detection efficiency is improved.

The utility model provides a kind of circuit board test fixture, it is related to the technical field of circuit board, including guide piece and clamping module.Guide piece forms adjustment path;Clamping module includes two clamping components, two clamping components are spaced apart in guide piece, and at least one of two clamping components is movably positioned along adjustment path setting, clamping component is equipped with the clamping part of electrically energizable setting.In the utility model, the clamping part of two clamping components is respectively used to clamp the two contacts of circuit board, and clamping part is electrically energizable setting, to realize the fixation of circuit board and power-on test.Further, at least one of two clamping components is movably positioned along guide piece, i.

The utility model relates to test appearance technical field especially is related to a kind of electric mark resistance mobile integrated machine. Including pedestal, pedestal is fixedly arranged with support frame, multiple electrode assemblies that can move horizontally are equipped on the support frame, the upper surface of the pedestal is equipped with placing table, one end of the pedestal is fixedly installed with stand, the stand is installed with adjusting plate, multiple dripping devices are equipped on the adjusting plate, the electrode assembly includes adjusting mechanism slidingly arranged on connecting frame, electrode probe is arranged at the end of adjusting mechanism, the horizontal position of electrode assembly is adjusted, and the electric mark resistance test is carried out to multiple samples to be measured on placing table. The electric mark resistance mobile integrated machine of the utility model can efficiently utilize space, and support multiple samples synchronous detection, realize the flexible adjustment of electrode and dripping position.

This application relates to the field of wired remote control technology, and discloses a testing method, a wired remote control, and a wired remote control testing system. The wired remote control includes: a button control chip configured to acquire simulated button signals during testing, the simulated button signals being used to simulate the signals generated when a physical button is pressed; and a main control chip connected to the button control chip, configured to receive the simulated button signals and use these signals to test the firmware under test in the main control chip. Through this method, the dependence on physical mechanical structures can be eliminated, and the testing of the firmware under test in the main control chip can be achieved through interaction between the button control chip and the main control chip within the wired remote control, thus verifying the robustness, fault tolerance, and stability of the firmware under test in the main control chip.

The invention belongs to the technical field of biology, and relates to a pathogen detection technology based on a CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) system, in particular to a tubercle bacillus detection and activity determination method based on fluorescent T7-CRISPR. The first purpose is to provide a reagent combination for detecting viable tubercle bacillus, and the reagent combination comprises a) a T7 reverse transcription reaction reagent and b) a CRISPR-Cas13a reaction system; a) the T7 reverse transcription reaction reagent comprises a T7 reverse transcription primer and a T7 reverse transcriptase; and b) the CRISPR-Cas13a reaction system comprises specific crRNA, a fluorescence labeled ssRNA reporter, a reaction buffer solution, a Cas13a protein, RNase-Free H2O and a T7 reverse transcriptase. The invention also provides application of the reagent combination in detection of viable tubercle bacillus. The primer combination disclosed by the invention has the advantages of strong specificity and high sensitivity in detection application, can realize rapid detection and visual detection, and is low in detection cost, simple and convenient to operate and suitable for large-scale clinical application.

This invention relates to the field of nuclear safety equipment testing technology. It provides a method for optimizing parameters in accelerated reliability testing of nuclear safety-grade valves. The method involves the following steps: establishing a correlation model between accelerated stress and life parameters; calculating the acceleration factor and formulating an initial test plan; deriving the theoretical sample size based on the success-failure test method combined with confidence requirements; constructing an extended coefficient table using the range-extended test method to optimize test parameters; generating multiple accelerated test plans through chi-square distribution verification; eliminating plans that do not meet the life characteristic threshold; determining the optimal sample size, number of failures, and test cycle through comprehensive test cost and risk analysis; and finally outputting a complete test plan including the action interval time. This method solves the problems of limited test samples, insufficient failure data, low confidence levels, and difficulty in adapting accelerated models in existing high-reliability valve technologies.

The utility model relates to a bridge support appearance inspection device, which comprises a walking track assembly, a bridge support appearance inspection device and a bridge support appearance inspection device, the walking track assembly comprises a walking track, a track support, a track height adjusting nut and a fixing nut unit, and the track support is connected with a bridge pier through the track height adjusting nut and is fixed through the fixing nut unit; the transmission assembly comprises a lateral wheel, a wheel supporting structure, a stepping motor and a tooth-shaped belt. The apparent image acquisition assembly comprises a camera; the development board is used for controlling operation of the stepping motor and shooting of the camera and uploading data; the power supply assembly comprises a lithium battery, a wireless charging module and a voltage reduction module; the transmission assembly, the apparent image acquisition assembly, the development board and the power supply assembly are all arranged on the walking track assembly. Compared with the prior art, through high-efficiency and low-cost automatic inspection, the bridge inspection system flexibly adapts to complex scenes, realizes high-precision detection and data management, and prolongs the service life of a bridge.

The invention discloses application of a plasma specific piRNA marker in preparation of a reagent for detecting gastric cancer. The piRNA marker is composed of the following plasma piRNAs: hsa-piR-21921, hsa-piR-9725, hsa-piR-19960, and hsa-piR-23621, and the piRNA marker is composed of the following plasma piRNAs: hsa-piR-21921, hsa-piR-9725, hsa-piR-19960, and hsa-piR-23621. The invention provides the piRNA marker for gastric cancer detection, and the piRNA marker can be used for preparing a reagent for gastric cancer detection and has the advantages of high accuracy, high sensitivity and high specificity.

This application discloses a method for calculating the vibration isolation of ship vibration isolation devices based on isolator type spectrum data, relating to the field of ship vibration isolation design. The method includes: acquiring the type spectrum data and impedance test data of the target isolator; determining the stiffness and damping parameters of the target isolator based on the type spectrum data and impedance test data; constructing a finite element model of the ship vibration isolation device; inputting the stiffness and damping parameters of the target isolator into the finite element model for calculation, and obtaining the vibration isolation calculation results of the target isolator. This method can efficiently utilize isolator type spectrum data to conduct vibration isolation calculation and evaluation of ship vibration isolation devices during the ship design phase, avoiding resonance between the natural frequency of the vibration isolation device and the excitation frequency of the equipment, and improving the vibration isolation effect.

The present application relates to a method for predicting fatigue crack propagation rate of a diffusion bonded dissimilar titanium alloy laminate structure, which is based on the mechanical properties of the constituent materials of the dissimilar titanium alloy laminate structure, i.e., the quasi-static tensile properties of the two titanium alloy plies. The method for predicting fatigue crack propagation rate of the diffusion bonded dissimilar titanium alloy laminate structure first establishes the relationship between the fatigue crack propagation rate of the laminate structure and the mechanical properties of the laminate structure, and then establishes the relationship between the mechanical properties of the laminate structure and the mechanical properties of the dissimilar titanium alloy single ply, thereby describing the relationship of the fatigue crack propagation rate of the laminate structure. Compared with the prior art, the method of the present application has the advantages of simple and convenient test, engineering precision, rapid and practical, etc., and effectively reduces the test cost and test time required for crack propagation test of the dissimilar titanium alloy laminate structure processed from different parameters.

A device for testing the airtightness and internal gas flow of a cryogenic insulation module includes an inlet / liquid inlet module, an outlet / liquid outlet module, and an insulation module. The inlet / liquid inlet module includes an inner space liquid nitrogen inlet valve, an outer space liquid nitrogen inlet valve, a low-pressure control module, an inner space high-pressure control module, an outer space high-pressure control module, a buffer tank, a pressure reducing valve, and a filter, all connected via pipes. The outlet / liquid outlet module includes a liquid nitrogen / nitrogen exhaust valve, an inner space exhaust valve, and an outer space exhaust valve, all connected via pipes. The outlet of the inlet / liquid inlet module is connected to the inlet of the insulation module, and the inlet of the outlet / liquid outlet module is connected to the outlet of the insulation module. This invention enables the airtightness testing and adaptability study of insulation modules under cryogenic and ambient temperature conditions, as well as the testing and research of internal gas flow performance.

The application discloses a method for predicting the thrust of a single-side expansion nozzle in a test state. First, at least three groups of performance data of the single-side expansion nozzle are obtained through simulation or test, and the data includes total pressure, total temperature, back pressure, flow rate and thrust coefficient of the nozzle. Second, the total pressure and the total temperature in each group of simulation or test are ensured to be the same, and if the total pressure and the total temperature are not the same, the total pressure and the total temperature are converted into the same total pressure and total temperature by using a formula. Then, a y=Ae ‑Bx +C function is introduced to establish a continuous relationship between the converted nozzle thrust and the back pressure, and the data at any point in the sample range is known. Only the relationship between the thrust coefficient and the pressure ratio is considered, and the influence of the specific heat ratio is ignored, so that the thrust coefficient is considered to be equal as long as the pressure ratio of the nozzle is the same. The nozzle thrust in the test state may be affected by the high-altitude cabin structure, and the application provides correction relationship formulas of different factors, so that the full-flow field thrust prediction of the nozzle can be more accurately constructed.

This invention discloses an auxiliary device for noise measurement of a heat recovery fresh air handling unit and its testing method. The auxiliary device includes a soundproof enclosure and soundproof ducts. The soundproof enclosure is formed by a soundproof wall, and an inner groove is provided on the bottom of the enclosure. Mounting holes are provided at both ends of the inner groove, connecting the inside and outside of the soundproof enclosure. A soundproof duct is provided corresponding to each mounting hole. One end of the soundproof duct is located in the inner groove and is used to connect to the heat recovery fresh air handling unit. The other end of the soundproof duct passes through the mounting hole into the soundproof enclosure. A static pressure ring is provided at the end of each soundproof duct connected to the heat recovery fresh air handling unit, and the static pressure ring is connected to a digital micro-manometer. An electric air valve is provided at the end of each soundproof duct that passes through the soundproof enclosure. The testing method involves suspending the heat recovery fresh air handling unit in a semi-anechoic chamber using the auxiliary device for testing. The auxiliary testing method of this invention does not damage the original structure of the semi-anechoic chamber, reducing testing costs.

The invention relates to a leakage current and breakdown voltage measuring device, which is applied to a semiconductor discrete device test and comprises a numerical control power supply, an MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) and a control circuit, the positive electrode of the numerical control power supply is connected with the D end of the MOSFET, the S end of the MOSFET is connected with the input end of the discrete semiconductor device, the output end of the discrete semiconductor device is connected with the negative electrode of the numerical control power supply and is grounded, the input end of the control circuit is connected with the output end of the discrete semiconductor device, and the output end of the control circuit is connected with the output end of the discrete semiconductor device. The output end of the control circuit is connected with the G end of the MOSFET tube. According to the leakage current and breakdown voltage measuring device provided by the invention, the MOSFET is arranged to replace a JEFT, and the control circuit is utilized to change the grid voltage of the MOSFET to realize accurate current limiting control, so that the test precision is ensured; meanwhile, the functions of leakage current testing and breakdown voltage testing are integrated, the testing cost is reduced, and the testing efficiency is improved.

This application belongs to the field of aero-engine technology, and specifically relates to a method and apparatus for simulating aircraft bleed air during sustained test of a turbofan engine, wherein the inlet temperature T1 and inlet pressure P1 of the engine are preset to a range; Step S2: Calculate the aircraft bleed air volume W fy The range, the total bleed air temperature T of the aircraft fy The range and total bleed air pressure P fy Range; Step S3: Calculate the cold diameter D of the bleed air nozzle. fy Range; Step S4: Select the cold-state diameter D of the bleed air nozzle fy An aircraft bleed air volume verification test was conducted to obtain the bleed air volume W for the test. fyr When the induced draft volume W in the experiment fyr The requirements are met, and the cold-state diameter D of the expiratory air nozzle is adopted. fy When the induced draft volume W in the experiment fyr If the requirements are not met, return to step S4; ensure that the calculation error of the aircraft bleed air volume is within the required range, and obtain the actual bleed air volume of the engine in various states to the maximum extent through test program design. This test method has the advantages of simple test method, low test cost and high replacement efficiency.

The application discloses a kind of ship intelligent navigation algorithm simulation verification system and test method, the system uses four-layer modular structure, including: virtual navigation environment module, standardization data interaction module, algorithm execution module, quantitative evaluation module;Between each module, standardization data interaction module is realized two-way data transmission, forms the complete simulation verification system capable of independent test and closed-loop operation.The method, using the system, the steps are: step 1: build inland virtual navigation scene, step 2: select test mode and configure algorithm, step 3: start simulation and data acquisition, step 4: evaluation index calculation, step 5: generate verification report.The algorithm unit of the application can be independently accessed to test, without overall reconstruction, perception, decision-making, control algorithm can be quickly adapted, greatly reduce the difficulty of integration debugging, improve algorithm development and verification efficiency, effectively shorten the intelligent ship development cycle.

The application relates to a light-emitting diode test circuit, a driving chip, a display module and a display panel. The light-emitting diode test circuit comprises: a plurality of first conductive elements, each first conductive element being used for corresponding connection with an anode of each light-emitting diode on a display module to be tested; a plurality of second conductive elements, each second conductive element being used for corresponding connection with a cathode of each light-emitting diode on the display module to be tested; a first conductive test element, which is connected with each first conductive element and is used for receiving a first driving voltage provided by an external test device; and a second conductive test element, which is connected with each second conductive element and is used for receiving a second driving voltage provided by the external test device, wherein the first driving voltage is greater than the second driving voltage. By using the above light-emitting diode test circuit, the number of top pins of a detection device can be reduced, and thus the detection cost is reduced.

The application discloses a cyanide-containing slag tailing pond groundwater environment risk early warning system, a groundwater monitoring well subsystem comprises a plurality of groundwater monitoring wells; a timing sampling control subsystem is used for controlling the pumping time, flow and frequency of a water pump in each groundwater monitoring well; a color reaction subsystem comprises a color developing device and is used for monitoring the color developing reaction of the groundwater sample; a color sensing subsystem comprises a light source and a color sensor, the light source is irradiated towards the color developing device, and the color sensor is used for collecting the emergent light signal of the color developing device after the color developing reaction; a central control platform comprises an early warning subsystem and an emergency disposal response subsystem, the early warning subsystem receives the color sensor signal and divides the risk grade according to the obtained signal; the emergency disposal response subsystem executes corresponding detection and repair responses according to the risk grade made by the early warning subsystem; the application realizes the rapid detection of the cyanide content in the groundwater around the cyanide-containing slag tailing pond and the feedback and early warning of the environmental pollution risk grade.

This application relates to the technical field of self-piercing riveting, and more specifically, to a self-piercing riveting device, a control method for the self-piercing riveting device, and related equipment. The self-piercing riveting device includes a first stamping part, a second stamping part, and a pressure sensor. The first stamping part pushes the tail of the rivet to apply pressure to the rivet, causing it to penetrate the multi-layered sheet metal. The pressure sensor detects the pressure applied to the rivet by the first stamping part. When a sudden change in pressure is detected, it indicates that the rivet has penetrated all the sheet metal. The second stamping part applies pressure to the tip of the rivet, causing it to deform and form a flange that abuts against the sheet metal. This ensures that the rivet completely penetrates all the sheet metal while preventing it from coming out, reducing the risk of loosening of the sheet metal during subsequent use. Furthermore, the riveting status can be detected without destructive testing, reducing testing costs and improving the efficiency of self-piercing riveting.

The present application relates to the technical field of corrugated pipe RF coaxial cable detection accessories, and particularly relates to a straight insertion connector structure for corrugated pipe RF coaxial cable detection. The inner cavity of the shell is a stepped ring body structure, and a pin is installed in the inner cavity of the shell; an insulator is installed in the middle ring segment cavity of the inner cavity of the shell, and the insulator tightly holds the pin, and the end of the pin towards the mating cable is provided with an inner contact spring body; an outer contact spring body is installed in the right ring segment cavity of the inner cavity of the shell and is positioned by a positioning member; the inner contact spring body and the outer contact spring body are coaxially arranged, the inner contact spring body and the outer contact spring body are inserted into the mating cable, and elastic contact is formed between the inner contact spring body, the outer contact spring body and the mating cable, thereby completing the installation of the cable detection connector. The complex installation of the connector in the detection process is reduced, the detection efficiency is improved under the premise of meeting the stability and accuracy of the detection data, and the detection cost is reduced.

The invention relates to the technical field of on-line testing of light emitting diode production and manufacturing, and provides an LED testing circuit and a testing method thereof. The method comprises the following steps: providing a test power supply for a to-be-tested plate provided with a to-be-tested multicolor light emitting diode, and lightening light emitting diode lamps with different colors on the to-be-tested plate one by one according to a preset color; after a light emitting diode with a color to be detected is turned on every time, three paths of light sensing parameters of current light emitting are collected through a light sensing sensor, the three paths of light sensing parameters are compared, and the color actually emitted by the current light emitting diode is determined according to a preset color judgment logic and the size relation of the three paths of light sensing parameters; comparing the actually judged color with the currently-lightened preset color, if the color is consistent with the currently-lightened preset color, judging that the light-emitting diode works normally, and if the color is not consistent with the currently-lightened preset color, judging that the light-emitting diode works abnormally; and testing of all the to-be-detected color light emitting diodes is completed successively, and a final LED testing result is obtained.

This invention provides a method and system for correcting hydrocarbon content in shale oil and gas formations. The method involves dividing the formation into sub-segments based on different core sampling intervals and collecting cores using both pressure-controlled closed core sampling and conventional core sampling methods. Pyrolysis is performed on the collected samples to obtain hydrocarbon content at different temperatures. The relationship curve between hydrocarbon content and total oil content in a single temperature range for pressure-controlled closed core sampling is used as the baseline hydrocarbon content relationship. The relationship curve between hydrocarbon content and total oil content in a single temperature range for conventional core sampling is used as the target hydrocarbon content relationship. The slope of the target hydrocarbon content relationship curve and the baseline hydrocarbon content relationship curve is analyzed to determine the hydrocarbon content requiring correction, and a correction coefficient is determined based on the slope. Therefore, a hydrocarbon content correction calculation model for conventional core sampling in different core segments is determined based on the correction coefficient. This scheme effectively overcomes the problems of high time and manpower consumption and insufficient data accuracy in existing hydrocarbon recovery technologies, achieving reliable hydrocarbon loss correction through simple operation.

This invention belongs to the field of airworthiness testing for aero-engines and provides a high-speed imaging device for aero-engines that simulates birds swallowing flocks, based on a multi-splitter flexible imaging fiber bundle. This device is used to simultaneously observe the flight trajectories of multiple simulated birds between the air cannon and the engine inlet. It includes a first multi-splitter flexible imaging fiber bundle, with multiple first split ends each equipped with a first fiber optic lens aligned with the flight path of each simulated bird. A first high-speed imaging component is optically coupled to a first convergence end, simultaneously recording the dynamic images of all paths in a single frame. Each split end is positioned in the free space to the side of the flight path, without penetrating the engine casing. Furthermore, both the convergence and split ends of the fiber bundle have rectangular end faces, with aspect ratios matching the high-speed camera's image sensor, avoiding invalid imaging areas. This invention achieves high-speed imaging of multiple targets, high synchronization, and high space utilization in bird-swallowing tests, and has the advantages of compact structure and strong anti-interference capability.

The application discloses a material mechanical property inference method based on multi-modal pre-training representation. In view of the problems that the existing method needs to rely on expensive scanning electron microscope images in the inference stage, and the prediction accuracy is low in the small sample scene, the application constructs a multi-modal network containing an image encoder, a table encoder, a shared projection branch and a modal specific projection branch, and carries out joint pre-training through cross-modal alignment loss, intra-modal decoupling loss based on contrast logarithmic ratio upper bound mutual information estimation and table mask recovery loss. Then, the pre-trained table encoder and its auxiliary projection head are migrated to the downstream multi-task regression network, and the mechanical properties can be predicted only by inputting process parameters. The method can also maintain stable performance in the small sample scene of iterative sample collection, significantly reduces the material representation cost, and improves the prediction accuracy and generalization ability.