393results about How to "Reliable test results" patented technology

The invention discloses a multi-modal sensor information fusion-based target detection method and system. The method comprises the steps of obtaining a visible light image and an infrared image of a preset area; based on a depth estimation network, respectively extracting depth information of the visible light image and the infrared image to obtain a depth estimation map after fusion of the visible light image and the infrared image; feature information of the visible light image and the infrared image is extracted based on a feature extraction network, and scene perception features of the depth estimation map are extracted; and carrying out feature fusion on the feature information of the visible light image and the infrared image and the scene perception feature of the depth estimation map by using a feature fusion network to obtain a depth estimation fusion image in a preset region, and carrying out to-be-recognized target detection on the depth estimation fusion image based on a target detection network. Through complementary characteristics of visible light and infrared images, depth information and scene perception capability of the images are enhanced based on a depth estimation network and a feature extraction network, and image target identification accuracy and robustness are improved.

The invention discloses a solid state disk testing method and system, a storage medium and a program product, and relates to the field of computer storage testing, and the method comprises the following steps: dividing a storage space of a solid state disk to be tested into a plurality of physical areas; determining the number of read-write tests of the to-be-tested solid state disk within a preset duration at a preset temperature; performing read-write test operation on the plurality of physical areas in sequence within a preset duration to obtain read-write error rates respectively corresponding to the plurality of physical areas, the number of read-write times of the read-write test operation being the number of read-write test times; if the read-write error rates corresponding to the physical areas exceeding the preset number are higher than a preset error rate threshold value, determining that the to-be-tested solid state disk is unqualified; and if the read-write error rates corresponding to the physical areas lower than the preset number are lower than a preset error rate threshold, determining that the to-be-tested solid state disk is qualified. By implementing the method, the specific problem area in the solid state disk can be positioned and diagnosed more accurately, so that the quality evaluation standard and the maintenance efficiency of the whole solid state disk are improved.

The invention discloses a source code change analysis method, system and equipment. The method comprises the following steps: acquiring a project source code and identifiers corresponding to the project source code in at least two versions; comparing differences of project source codes between different versions based on the identifiers, and determining code change content; filtering the code change content according to a preset filtering rule, and determining a change method name; performing code analysis on a method calling relation in the project source code, and determining a method calling link diagram; identifying the method calling link diagram by referring to a change method name, and determining a change influence link diagram; analyzing according to the entry of the change influence link diagram, and determining the range of the entry and a corresponding calling link; according to the method and the device, case design is performed according to the range of the code change influence entry and the corresponding calling link, and the evaluation of the test coverage is completed, so that the efficiency of test work is improved, the possibility of human errors is reduced, the test result is more accurate and reliable, and the evaluation of the test coverage is realized.

The invention discloses a PCB surface defect detection method and system, an electronic device and a medium, and relates to the technical field of defect detection, the connection condition caused by excessive tin soldering of a tin bridge or adjacent welding spots can be automatically identified by judging the connection state between the welding spots, an overall detection instruction is triggered, early detection is facilitated, connectivity defects are avoided, and the detection efficiency is improved. And the welding spot connection reliability is improved. The image is divided into a plurality of image blocks, the texture difference data of each image block is obtained, the texture abnormal state of the surface of the PCB can be finely analyzed by calculating the texture deviation coefficient, the subtle texture change in different areas can be identified by the block analysis method, and surface defects such as scratches and bubbles on the surface of the PCB can be accurately detected. And in combination with the texture deviation coefficient and the geometric features of the welding spots, unified normalization fitting is performed on the defect features to generate the defect recognition index, so that the defect features of different types can be captured, and the robustness and accuracy of the model can be improved.

The invention relates to the technical field of window opener chains, in particular to a window opener chain strength testing device based on electric window opener production and a testing method.The window opener chain strength testing device comprises a frame and a testing window opener, a simulation window is arranged on one side of the frame, and the top of the simulation window is fixedly connected with a rotating shaft rotationally connected with the frame; a window opener chain is mounted in the test window opener, one end of the window opener chain is fixedly connected with the simulation window through a connecting seat, a mounting cylinder is arranged in the frame, the outer surface of the mounting cylinder is in sliding connection with a rotating ring, one end of the rotating ring is fixedly connected with a pull handle rotationally connected with the simulation window, and the other end of the rotating ring is fixedly connected with the test window opener. A mounting cylinder is arranged in the frame, a resistance assembly is arranged in the mounting cylinder, a straight plate is arranged on one side of the frame, a pressure applying plate for applying resistance to the simulation window is arranged at the bottom of the straight plate, sliding seats are slidably connected to the two ends of the frame, and pressure assemblies acting on the straight plate are arranged on one sides of the two sliding seats.

The invention discloses a tensile test device and method for environment-friendly three-resistance colored spun fiber production, and relates to the technical field of fiber tensile test. The tensile testing device and method for environment-friendly three-resistance colored spun fiber production comprise a bearing table, a control table fixed to the top of the bearing table, a guide seat fixed to the top of the bearing table, a threaded rod arranged in the bearing table in a penetrating mode and used for applying stable tension to tested fibers, and a power motor fixed in the bearing table and used for driving the threaded rod to rotate. A supporting rod is arranged on the threaded rod in a threaded and penetrating mode, an upper clamping table used for clamping a detected fiber is fixed to one end of the supporting rod, the interval of the elongation at break of a detectable fiber sample is increased, only a small space needs to be occupied, and it can be avoided that the initial length of the cut fiber sample is too long and the elongation at break is unknown; therefore, the situation that the fiber sample cannot be snapped only through linear movement of the upper clamping table and the lower clamping table is avoided.

The invention relates to the technical field of image processing, and provides a vital sign detection method based on millimeter-wave radar and camera fusion, which comprises the following steps: performing posture detection based on a human body image of a target person to obtain a chest area of the target person, and performing frequency analysis on a millimeter-wave radar signal to obtain a distance angle heat map; performing human body positioning based on the chest area and the distance angle heat map to obtain a human body position; based on the human body position, phase extraction is carried out on the millimeter wave radar signal to obtain the vital sign signal of the target person, variational mode decomposition is carried out on the vital sign signal to obtain the vital sign parameter of the target person, and the defects that current detection is easily influenced by the human body skin state, the detection result is inaccurate, and the detection accuracy is high are overcome. The system has the advantages that the defects of limitation on special crowds, continuous monitoring and remote monitoring are overcome, non-invasive detection is realized, the detection result is more accurate and reliable, the system is more beneficial to the special crowds, and support is provided for family medical treatment and remote health monitoring.

The invention discloses a machining product quality online detection precision evaluation method based on multi-factor fusion. The method comprises the following steps: firstly, determining machining process input factor characteristics of online detection precision evaluation and an output machining precision grade; secondly, historical samples of the factor characteristics are analyzed, an atomization sample plate set is generated, and a random fuzzy sample plate set is constructed; an online input feature sample is converted into a random fuzzy to-be-detected set, then the random fuzzy sample set is matched with the random fuzzy to-be-detected set, and reliability distribution describing the nonlinear mapping relation between the multi-environment-factor features and the detection precision is obtained. And finally, fusing the reliability distribution, determining the precision grade of online detection of the quality of the machined product according to a fusion result, and judging whether the product is qualified or not. According to the method, a complex non-linear relationship can be processed, reliability distribution related to the detection precision can be efficiently obtained, and the online detection precision can be evaluated more accurately in practical application.

The invention discloses a fan main shaft bearing testing machine, which belongs to the field of fan bearing testing, solves the problems of complicated testing structure, complicated testing steps and inaccurate testing in the prior art, and adopts the technical scheme that the fan main shaft bearing testing machine comprises a platform, a main shaft arranged on the platform in a split manner, and a driving assembly for driving the main shaft to rotate, the platform is further provided with a testing station which is located in the radial direction of the main shaft and used for testing a bearing bush of a single sliding bearing, the testing station is provided with a first pressure sensor, a second pressure sensor and a loading unit, and the first pressure sensor is used for detecting oil film pressure between the bearing bush of the sliding bearing and the main shaft; the loading unit is used for driving a bearing bush of the sliding bearing in the radial direction of the main shaft so as to provide radial loading force for the bearing bush of the sliding bearing, and the second pressure sensor is used for detecting the radial loading force provided by the loading unit. According to the invention, the test structure and the test steps are simplified while the test accuracy is mainly improved.

The invention relates to a mobile phone rear cover defect identification and detection method based on a multispectral image, and belongs to the technical field of image processing and machine vision. Firstly, in a black room environment, a light source with multispectral distribution is used for irradiating a rear cover of a mobile phone to collect multispectral pictures required by an experiment, and the multispectral pictures comprise pictures irradiated by 16 different spectrum sections in visible light; then, the images under the spectrums are preprocessed, including the steps of denoising, illumination compensation and the like, so that the quality and the consistency of the images of the different spectrums are ensured; then, spectrum reconstruction data enhancement is carried out on the collected multispectral images, so that more color information related to defects is obtained; and finally, a cavity space pooling pyramid model and an SE attention module are added to the YOLOv7 model, the feature extraction and recognition capability of a defect area is enhanced, the preprocessed multispectral image is trained and detected by adopting an improved YOLOv7 algorithm, and the method has the advantages of high robustness and high detection precision and is suitable for automatic quality detection of the mobile phone rear cover.

The invention relates to the field of DNA amplification, in particular to an intelligent molecular diagnosis and analysis method, device and equipment and a storage medium. The method comprises the following steps: detecting multi-dimensional environmental parameters of the DNA amplification kit in real time based on a multi-dimensional sensing node; performing spatial topology layout mining and environment amplification perception fitting on the multi-dimensional environment parameters, and constructing a real-time amplification perception model; identifying a DNA amplification sample; performing layered temperature control analysis on the DNA amplification sample, and performing dynamic amplification constant-temperature control on the real-time amplification perception model, so as to construct a plurality of dynamic constant-temperature amplification models; carrying out regional DNA reaction degree evaluation on the plurality of dynamic isothermal amplification models one by one, and then carrying out regional flow velocity dynamic regulation, so as to construct a dynamic amplification reaction flow velocity regulation strategy; real-time amplification control is performed based on a dynamic amplification reaction flow rate adjustment strategy to generate a filter optimized amplification reaction signal. According to the method, the accuracy of molecular diagnosis analysis is improved through efficient and convenient DNA isothermal amplification.

The invention belongs to the technical field of ultrasonic positioning diagnosis, and discloses an ultrasonic phased array positioning diagnosis method for a dry-type bushing capacitor core with a microcrack defect, and the ultrasonic detection technology is a nondestructive detection method, and cannot damage a detected insulating material, so that the ultrasonic phased array positioning diagnosis method is suitable for long-term monitoring and preventive maintenance. As the ultrasonic wave has very high frequency and energy, the ultrasonic wave can penetrate through a thicker layer of the insulating material, so that tiny defects and changes can be found. The ultrasonic detection technology can find out the defects of aging, bubbles, impurities, cracks and the like in the insulating material, and can also be applied to other types of electrical equipment, such as cables, transformers and the like, so as to evaluate the insulating properties of the electrical equipment. And taking the discharge signal starting time measured by an electric detection method as a reference to obtain time delay data of all the sensors, and then carrying out next positioning calculation.

The invention relates to the technical field of corrosion tests, and particularly provides a corrosion fatigue coupling test device and a corrosion fatigue coupling test method for a buried pipeline. Corrosion and fatigue coupling effects suffered by the buried pipeline are simulated through the circulating pressurizing system, the fatigue loading system and the corrosion environment adjusting system, and related data of the pipeline and soil in the corrosion process are recorded through the data collecting and monitoring system. According to the invention, the test process is closer to the real service environment of the buried water supply pipeline, the temperature, humidity, pH and other parameters in the test box can be kept relatively stable, and the influence of dead load of buildings, vehicles, vibration and other live loads in the pipeline operation process is fully considered, so that the test result is more reliable and accurate, and the test efficiency is improved. Meanwhile, all the systems are controlled in a centralized mode through the controller, so that the experiment period is relatively short, the automation degree is high, operation is easy and convenient, functions are comprehensive, and the application prospect is wide.

The present invention relates to the field of steel wire strength testing, and specifically to a tire steel wire ring strength testing device, the tensile testing machine has two multifunctional clamping jaw devices distributed up and down, the multifunctional clamping jaw device comprises a double-layer bracket body, a driving cylinder, two clamping fingers, a winding assembly and a clamping assembly, the two clamping fingers are axially connected to the opposite sides with a T-shaped clamping wheel, a transmission mechanism is arranged between the output shaft of the driving cylinder and the two clamping fingers, the winding assembly comprises an anti-skid rubber wheel for driving the two T-shaped clamping wheels to rotate synchronously, and the clamping assembly comprises an arc-shaped pressure plate for clinging to the side wall of the T-shaped clamping wheel. The present invention replaces the traditional direct clamping method with a winding method, which greatly avoids the situation that the clamping part is broken due to excessive local stress concentration in the traditional clamping test method, effectively alleviates the defect of steel wire stress concentration in the traditional clamping method, and makes the test result more accurate and reliable.

The invention relates to a method for detecting high-content zinc element in ore. The detection method comprises the following steps: adding a zinc-containing ore sample into a mixture of ammonium fluoride, hydrobromic acid, hydrochloric acid, nitric acid and perchloric acid, dissolving, taking melt with hydrochloric acid to obtain a solution to be detected, drawing a zinc standard working curve, detecting the strength of the solution to be detected, and calculating the content value of the zinc element on the zinc standard working curve according to the strength value. According to the scheme provided by the invention, the operation is simple and convenient and the detection result is accurate when the high-content zinc element in the ore is detected.

The invention belongs to the technical field of biology, and particularly relates to a real-time fluorescent quantitative PCR (polymerase chain reaction) detection kit for porcine reproductive and respiratory syndrome virus and application of the real-time fluorescent quantitative PCR detection kit. The invention designs a primer probe combination for detecting porcine reproductive and respiratory syndrome virus, the primer probe combination consists of a primer P1, a primer P2 and a probe, and the sequences of the primer P1, the primer P2 and the probe are respectively shown as a sequence 1, a sequence 2 and a sequence 3. The invention further provides a kit containing the primer probe combination. The kit can be used for identifying and detecting the porcine reproductive and respiratory syndrome virus. The primer P1 and the primer P2 designed by the invention have strong specificity and high sensitivity, the detection sensitivity of the primer P1 and the primer P2 to the porcine reproductive and respiratory syndrome virus reaches 1.0 * 10 < 1 > copies / mu L, the detection repeatability is good, and the primer P1 and the primer P2 can be used for rapidly detecting the porcine reproductive and respiratory syndrome virus.

The utility model discloses a pipe seam type anchor rod drawing force testing device, which is characterized in that a gasket sleeved on a pipe seam type anchor rod and clamped with an anchor rod baffle ring is of a two-section structure, the two sections are combined to form a cylinder body with a gasket flange at the end part, and the outer side of the cylinder body is bound and fixed through an iron wire. And the inner end of the small sleeve is provided with a clamping ring for clamping the flange of the gasket from the inner side. The outer end of the small sleeve is fixedly connected with a small sleeve rod body. The inner end of the large sleeve is open, and the outer end of the large sleeve is provided with an end plate with a center hole. The small sleeve rod body penetrates through the center hole outwards, and the outer end of the small sleeve rod body is connected with a nut used for tightly jacking the hollow jack towards the inner side. The gasket not only has the characteristic of being convenient to assemble, but also can adapt to rod bodies with different thicknesses and is tightly matched with the anchor rod. By utilizing the device, the anchor rods with different sizes can be subjected to drawing test, and the coaxiality adjustment difficulty of related parts of the device is reduced.

The invention provides a detection method of a monomer nitrogen-hydrogen-chlorine multidimensional stable isotope of chloroaniline and a monitoring method of chloroaniline, and relates to the technical field of isotope detection. According to the method, a gas phase-double oxidation tube-stable isotope ratio mass spectrum is adopted to detect and calculate a nitrogen stable isotope ratio in chloroaniline, and a gas phase-chromium filler cracking tube-stable isotope ratio mass spectrum is adopted to detect and calculate a hydrogen stable isotope ratio; the gas phase-multi-collector inductively coupled plasma mass spectrometry is adopted to detect and calculate the chlorine stable isotope ratio, so that the determination of the multi-element stable isotope ratio of nitrogen, hydrogen and chlorine in o-chloroaniline, m-chloroaniline and parachloroaniline is realized, the detection degree is more comprehensive, and the detection result is accurate, efficient and reliable. The range of each isotope signal value in the detection process is controlled, and high accuracy of the detection result can be ensured. The detection method provided by the invention provides a new method and means for deep research and monitoring of chloroaniline traceability, degradation mechanism and environmental homing.

The invention discloses a plate surface detection method and device, relates to the technical field of computer science and engineering, and aims to solve the problem of poor accuracy of acquired plate surface data in the prior art. The method comprises the steps of obtaining three-dimensional coordinate information data of the surface of a plate, and performing data preprocessing on the three-dimensional coordinate information data to obtain first three-dimensional point cloud data; rasterization processing is further carried out on the first three-dimensional point cloud data, target feature information in the first three-dimensional point cloud data is reserved, and second three-dimensional point cloud data is obtained; performing defect filtering processing on the second three-dimensional point cloud data according to a preset defect filtering strategy to obtain plate type three-dimensional point cloud data of the surface of the plate; the defect filtering processing comprises one or more of down-sampling, point cloud curved surface reconstruction and up-sampling processing; on the basis, the three-dimensional point cloud data of the surface of the plate can be obtained more accurately, and the accuracy of obtaining the surface data of the plate is improved.

The invention discloses a rail transit gearbox bearing test platform, which comprises a platform, and a driving device, a radial loading device, an axis axial loading device, an eccentric axial loading device, a first test device and a second test device which are arranged on the platform, the radial loading device is slidably mounted on the platform; the first test device and the second test device are both provided with oil ways. Through the arrangement of the first test device, the second test device, the axis axial loading device and the eccentric axial loading device, the overall performance test of a group of output end or input end gearbox bearings is realized. Meanwhile, radial loads can be applied to different bearings during tests through the arranged radial loading device capable of conducting position adjustment, the applicability of the device is greatly improved, it can be guaranteed that various test requirements of two kinds of gear box bearings can be met, and the test platform can be used for testing the two kinds of gear box bearings through simulation of matching of the real state and the installation layout structure. Performance verification of the gearbox bearing under various working conditions can be achieved, it is guaranteed that test conditions are close to real operation working conditions, and reliability of test results is improved.

The invention belongs to the technical field of cables, and particularly relates to a power cable insulation performance rapid detection device and method.The power cable insulation performance rapid detection device comprises a base, a mounting plate is fixedly connected to the upper surface of the base, a transverse plate is fixedly connected to the outer wall of the mounting plate, and a plurality of conducting rods are fixedly connected to the side, away from the mounting plate, of the transverse plate; a mounting frame is fixedly connected to the upper surface of the base, a baffle is fixedly connected to the inner wall of the mounting frame, and a gear motor is fixedly connected to the outer wall of the mounting frame. The cable winding and unwinding device can detect an insulating layer of a cable in the cable winding and unwinding process, defects in the insulating layer can be effectively detected, meanwhile, compressive strength testing can be conducted on the cable, and the cable winding and unwinding device is high in practicability. According to the cable insulation layer detection device, potential insulation layer defects can be found easily, detection personnel can be helped to find some potential insulation layer defects or defects difficult to find directly, such as tiny holes, cracks or bubbles, of the insulation layer, and the detection efficiency of the cable insulation layer detection device is improved.

The utility model discloses automatic motor parameter testing equipment, which comprises a testing rack, an instrument rack and a tested motor, and is characterized in that the testing rack is provided with a power mechanism, a power transmission mechanism, a shaft tail bearing seat and a jig mandrel; the power mechanism comprises a power shaft and a power assembly. The power transmission mechanism comprises a transmission shaft and an electromagnetic brake. One end of the jig mandrel is rotationally connected with the shaft tail bearing seat, and the other end of the jig mandrel is connected with the transmission shaft; a jig mounting seat is arranged on the outer side of the jig core shaft, and a tested rotor is connected with the jig core shaft; an industrial control computer, an instrument assembly and a printer are arranged on the test rack, and the instrument assembly comprises a gauss meter, an LCR tester, a digital oscilloscope, a power analyzer and an alternating current programming power supply. According to the utility model, parameters such as inductance, induced voltage, magnetic flux and the like of the motor can be tested and recorded automatically, reports are generated, the production cost is reduced, the detection speed and precision are improved, and the detection result is accurate and reliable.

The invention discloses a corrosion-resistant coating and a testing device, and relates to the field of coatings, the corrosion-resistant coating comprises a corrosion-resistant testing cabin, a top cover is mounted at the top of the corrosion-resistant testing cabin, a partition plate is fixedly mounted in the corrosion-resistant testing cabin, and two fixing plates are symmetrically mounted on the two sides of the partition plate in the corrosion-resistant testing cabin front and back; two clamping blocks are rotationally mounted at the positions, close to the two sides, of the top of the fixing plate, first springs are fixedly connected between the clamping blocks and the fixing plate, experiment plates are arranged at the positions, located on the two sides of the partition plate, in the corrosion resistance testing cabin, and the experiment plates are matched with the clamping blocks in an adaptive mode; sliding grooves are formed in one side of the partition plate and the two sides of the corrosion-resistant testing cabin in a penetrating mode, spraying rods are installed in the three sliding grooves in a sliding mode, spraying rotating structures are arranged on the two sides of the corrosion-resistant testing cabin, and by arranging the spraying rotating structures, the uniform spraying effect can be provided.

The utility model discloses an air permeability tester, and relates to the technical field of testing devices, and the air permeability tester comprises two clamping driving mechanisms connected to a case through a rack; the two clamping air tap assemblies are connected to the corresponding clamping driving mechanisms; the at least one supporting air tap assembly is correspondingly arranged below the clamping air tap assembly, and an experiment piece is clamped between the clamping air tap assembly and the supporting air tap assembly; the clamping driving mechanism drives the clamping gas nozzle assembly to move, so that a first gas cylinder of the clamping gas nozzle assembly ventilates gas to a second gas cylinder of the supporting gas nozzle assembly, gas passes through the experiment piece, and the gas permeability of the experiment piece is measured, and the device is simple in structure, easy to install, rapid in test result response and more practical.

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 discloses a performance detection device for a cotton fiber material, belongs to the technical field of performance detection devices for the cotton fiber material, and aims to solve the problems that the requirement for equipment stretching is large, the equipment stretching is not convenient enough, and different areas cannot be detected. A servo motor is fixedly mounted in the device body below the detection platform, a sliding groove is formed in the device body, a cross rod is fixedly connected to the inner wall of the sliding groove, a top block is fixedly connected to the outer wall of the cross rod, a threaded rod is fixedly connected to the output end of the servo motor, and the end, away from the servo motor, of the threaded rod penetrates and extends into the sliding groove; according to the performance detection device for the cotton fiber material, the strength of the cotton fiber material can be subjected to multi-section synchronous detection, the detection efficiency is improved, meanwhile, the cotton fiber material can be further limited during detection, the stretching stroke needed by equipment is effectively reduced, and the accuracy of a detection result is improved.

The invention discloses an automobile intelligent cabin controller assembly detection method, device, equipment and medium, and relates to the technical field of automobile detection.The method comprises the steps that version number reading, data writing and device on-off detection are executed on a to-be-detected controller based on image recognition programming software, and an execution result is displayed through the image recognition programming software; the image identification programming software drives the to-be-detected controller to control the change of a rotating speed pointer of the instrument screen and the change of the color of the central control screen, and judges whether the instrument screen and the central control screen are qualified or not based on a visual identification mode; and the image identification programming software drives the controller to be detected to enter a sleep mode and turns off an ACC power supply, and quiescent current testing and recording are carried out, so that quiescent current detection of the controller to be detected is realized. The detection efficiency is high, the detection result is reliable, the detection result is automatically recorded, and subsequent query and tracing are facilitated.

The invention relates to a kit for absolutely and quantitatively detecting KCNJ5 hotspot mutation based on a ddPCR technical platform and a detection method of the kit. The kit comprises an upstream primer KCNJ5-451F, a downstream primer KCNJ5-503R, mutant probes KCNJ5-451P-MUT, mutant probes KCNJ5-451P-MUT, mutant probes KCNJ5-503P-MUT, wild probes KCNJ5-451P-WT, wild probes KCNJ5-451P-WT and wild probes KCNJ5-503P-WT. The invention further relates to a kit for absolutely and quantitatively detecting KCNJ5 hotspot mutation based on the ddPCR technical platform and a method for absolutely and quantitatively detecting KCNJ5 hotspot mutation based on the ddPCR technical platform. The kit is simple, convenient and rapid, absolute quantitative detection of KCNJ5 gene hotspot mutation can be completed only through a single-tube reaction system, the kit has good sensitivity and repeatability, the detection result is accurate and reliable, an important gene marker result is provided for prediction of the postoperative curative effect of an APA patient, and the kit has important clinical application value.

The utility model provides an impact performance testing device for a metal organic framework material. Comprising a table plate used for containing the metal organic frame material and a supporting plate used for supporting, the supporting plate is fixedly installed on the lower surface of the table plate, a cavity is formed in the table plate, a clamping mechanism used for clamping the metal organic frame material is arranged in the cavity, one side of the table plate is fixedly connected with a supporting frame, and the supporting frame is fixedly connected with the table plate. A stamping mechanism used for stamping the metal organic frame material is arranged on the lower surface of the supporting frame, and camera shooting mechanisms used for recording the stamping process are arranged on the left side and the right side of the stamping mechanism correspondingly. According to the utility model, the camera shooting mechanism is arranged, so that fine changes in the impact process can be recorded, the impact effect can be analyzed, visual video information is provided for recording of a high-speed camera, researchers can observe behaviors such as deformation and fracture of materials, and important data support is provided for further analysis and research.

The utility model belongs to the field of test jigs, and particularly relates to a high-precision IC (integrated circuit) carrier plate test jig, which comprises an upper die holder, a lower die holder and one end of a guide rod uniformly arranged at the lower end of the upper die holder, a pressing plate is arranged on the guide rod in a sliding manner, and a probe for power-on test is arranged at the lower end of the pressing plate; the lower die holder is connected with the other end of the guide rod, the lower die holder is provided with an inward concave placing cavity, and the IC carrier plate is located in the placing cavity; an alignment groove group is formed in the periphery of the placement cavity, an alignment convex groove group is further formed in the lower end of the pressing plate, and the alignment convex groove group is connected with the alignment groove group in an embedded mode; the lower die base is further provided with a clamping assembly used for clamping the IC carrier plate. According to the test fixture, the embedded connection design of the alignment groove group and the alignment convex groove group is adopted, limiting deviation caused by factors such as friction force of the pressing plate can be effectively reduced, and the clamping assembly is matched to clamp the IC carrier plate, so that the test accuracy is improved, and the test result of the IC carrier plate is more accurate and reliable.