41results about How to "Reduce the impact of test results" patented technology

The invention discloses a fabric surface defect detection machine set, and a detection method based on the fabric surface defect detection machine set. The fabric surface defect detection machine set comprises a machine frame, a feeding roller assembly, a foreign matter removing device, a flattening device, a deviation correcting device, a drawing roller assembly, a wrinkle removing device, an industrial camera, a marking machine, and a coiling machine. According to the detection method based on the fabric surface defect detection machine set, before detection, impurity removing, flattening, deviation correcting, and wrinkle removing are adopted so as to conveying flat fabric into a detection zone steadily; the fabric surface defect detection machine set can be used for on-line detection of fabric surface, increasing fabric surface detection efficiency and fabric detection result accuracy.

The invention discloses a sperm morphology analysis method based on a deep neural network model, and the method comprises the steps: recognizing and positioning sperms in a microscopic image through asperm image positioning module, extracting a sperm image, finally analyzing the image of each sperm through a sperm morphology analysis module, and completing the classification. According to the invention, the influence of interference factors on detection results can be greatly weakened, and the reliability of sperm morphology analysis results is improved. Feature information which cannot be obtained by a traditional measurement method in sperm pictures can be captured, so that the accuracy of sperm morphology analysis is improved. The sperm morphology analysis requirements of different sperm classification targets can be met.

The invention discloses a detection method of heavy metal lead ions. A ratio fluorescent biological probe is finally formed by modifying nanogold on the surface of an aminated magnetic bead to form a fluorescence quenching body, connecting the nanogold to a sulfhydrylated DNA enzyme through an Au-S bond and modifying red quantum dots to form a red fluorescent probe, and combining with a substrate chain modified with green quantum dots at the other end through base complementary pairing. Under the effect of DNA, Pb<2+> can recognize and shear the substrate chain, so that a distance between the green quantum dots and the nanogold is changed, the quenching and recovery of green fluorescence are realized, and finally, the quantitative detection of Pb<2+> is realized through the change of a red-green fluorescence ratio due to the change of the green fluorescence intensity. The method has the characteristics of simplicity and convenience, a double-signal detection mode is adopted, the influence of a background environment on a detection result is effectively reduced, and an experiment error is reduced; the method is simple and feasible to operate, low in detection cost and capable of realizing quantitative detection of a target object through a fluorescence spectrophotometer.

The invention provides a performance testing apparatus and method for a flat-plate LHP capillary core. An evaporator of the apparatus comprises an evaporator main shell, an evaporator cover plate, a main sealing ring, a secondary sealing ring, a to-be-tested capillary core and a fastener. The method comprises the following steps: bonding of a heater with a measuring point; testing of heat transfer capability; and testing of inverse gravity capability. The performance testing apparatus provided by the invention can simulate an ideal combination state and maximally reduce influence of other non-relevant factors on result, is repeatedly usable, and adaptive to to-be-tested capillary cores of different sizes by changing the sizes of the main and secondary sealing rings, so test cost is decreased.

The invention discloses a test platform for measuring the smog transmittance of a light source. The test platform comprises a shell. The two ends of the shell in the length direction are respectivelyprovided with an airflow inlet and an airflow outlet. A channel for a test airflow to continuously pass through is formed between the airflow inlet and the airflow outlet. An arc-shaped shunting plate, a first-stage airflow equalizing plate, a second-stage airflow equalizing plate and a scattered light eliminating plate are arranged between the airflow inlet and the airflow outlet in the shell insequence. Detection holes are arranged on the two opposite side walls of the shell in the width direction, and in the scattered light eliminating plate between the above two side walls, wherein the detection holes are corresponding to one another in position and are configured to penetrate along the width direction of the shell. A light source used for projecting the detection light to the detection holes and a visible light detection module used for receiving the detection light are arranged on the two sides of the shell respectively. According to the invention, a foundation is laid for quantitatively providing a smog transmittance performance index for the light source, and a basis is provided for designing the light source high in smog transmittance performance.

The invention discloses a port test method and system. The method comprises that all ports to be tested of tested equipment are in loopback connection; test ports of an accompanied test equipment areconnected with an error code instrument; the reception direction of the test ports of the accompanied test equipment and the sending direction of the first port to be tested of the tested equipment are configured in a time-slot cross way, and the reception direction of the last port to be tested of the tested equipment and the sending direction of the test ports of the accompanied test equipment are configured in the time-slot cross way; based on the configuration, the error code instrument emits a test data packet and determines a test result, and thus, port test of the tested equipment is realized.

The invention discloses a hardware Trojan horse image registration method based on RSIFT, a storage medium and equipment, and the method comprises the steps: carrying out the Gaussian filtering and down-sampling of an input image, and constructing a multi-scale space; detecting an extreme point of the image in the constructed multi-scale space; assigning values to the directions of the obtained extreme points to obtain position, scale and direction information of the corresponding points, and generating feature descriptors; preliminarily generating a pre-matching point pair by using the generated feature descriptor and a distance matching method, and representing the pre-matching point pair by using a matching matrix C; and after the pre-matching matrix C is determined, performing correction by using an RANSAC algorithm, removing redundant matching points, and completing image registration. According to the invention, the problem of affine transformation in image registration is effectively solved, interference caused by noise points can be avoided more flexibly, and the stability and accuracy of the image registration method are further improved.

The invention discloses a detection device for multi-angle nanometer granularity measurement and a detection method thereof, and belongs to the field of nanometer granularity detection. The detectiondevice for multi-angle nanometer granularity measurement comprises a laser emitter, a lens, a sample cell, a detector, a calculator and a rotating mechanism, wherein the rotating mechanism comprises arotating part and a static part, the angle at which the laser emitter irradiates the sample cell changes along with the relative rotation of the rotating part and the static part, and the angle of scattered light detected by the detector also changes, namely the detector can detect the scattered light intensity at different scattering angles. Compared with the prior art, according to the detection device for multi-angle nanometer granularity measurement provided by the invention, the light intensity change under different scattering angles is detected by changing the angle of the laser irradiation sample pool, so that the detection of nanometer granularity is realized, the influence on the detection result due to different irradiation angles and different scattering angles is reduced, andthe detection accuracy of nanometer granularity is improved.

The invention discloses a cigarette smoke aerosol testing device. The device comprises a smoke sampling device, a diluting device and an aerosol testing device which are connected by a pipeline in sequence. The device has the following technical effects: 1, real-time testing of the grain size distribution of fresh cigarette smoke aerosols is realized; 2, the smoking forces generated by the cigarettes come from the smoking machines with bell-shaped suction curves and the smoking scheme is standard; 3, the effects of dilution on the testing results of the aerosols are reduced; and 4, partial flow sampling is adopted, thus reducing the particulate matters entering into the diluting system, reducing the probability of particle deposition and reducing the problem of easy blocking of the diluting system and the valves.

The invention provides a gasket elasticity test tooling. The gasket elasticity test tooling comprises an upper clamping block and a lower clamping block which are used for clamping a compressing to-be-measured gasket, wherein facing ends of the two clamping blocks are correspondingly provided with an upper positioning plane and a lower positioning plane. The gasket elasticity test tooling also comprises a supporting base; the lower clamping block is arranged on the supporting base through a supporting adjusting mechanism along the vertical direction in an adjustable supporting mode; the supporting adjusting mechanism also comprises a driving portion which is in transmission connection with the lower clamping block to drive the lower clamping block to move in the vertical direction; a supporting positioning platform is arranged on the side of the lower clamping block on the supporting base; the supporting positioning platform is provided with a supporting positioning plane which is used for being in contact top press fit with the upper positioning plane; the height difference between the supporting positioning plane and the lower positioning plane in the vertical direction is equal to the set test thickness of the to-be-measured gasket. The gasket elasticity test tooling does not need to satisfy test requirements of gaskets in different sizes through positioning gasket blocks in different thicknesses in the prior art, is low in manufacture cost and rapid and convenient to test.

The invention relates to the technical field of mechanical environment tests and particularly discloses a horizontal vibration test device capable of directly hanging a test piece. The test device comprises a vibration table, a horizontal slip and a hanging fixture, wherein the vibration table is fixedly connected with the horizontal slip through a connector; the hanging fixture passes through and is arranged on the horizontal slip, and the lower end can clamp the test piece; through changing the mounting direction of the hanging fixture on the horizontal slip, axial or radial mounting of the test piece is realized; through reciprocating vibration of the vibration table, the hanging fixture on the horizontal slip and the test piece clamped at the lower end are driven to perform reciprocating vibration in the axial or radial direction. High requirements on equipment when a horizontal vibration test is carried out on a rack-like product through large fixture transit presently can be solved, influences on a test piece test result by modal characteristics of the large fixture are reduced, and besides, the horizontal vibration test device can also complete a horizontal vibration test on a conventional product according to needs, and the application range and the test ability of the existing horizontal slip are improved.

The invention provides a calibration method and device for a reference ring. The method comprises the following steps of selecting N reference rings and respectively computing to obtain an impedance compensation factor between the reference rings in each reference ring group; utilizing the impedance compensation factor to respectively compute to obtain an attenuation difference between the reference rings in each reference ring group; utilizing the attenuation difference to compute to obtain an error value of the current reference ring; utilizing the error value of the current reference ring to compute a correction parameter of the current reference ring; and calibrating the current reference ring according to the correction parameter of the current reference ring. The impedance compensation factor is utilized to compensate the attenuation difference between the reference rings, so that the influence of the impedance of the reference ring on a measuring result can be eliminated, and then the correction parameter obtained by computation is utilized to calibrate the reference ring, so that the influence on a testing result of a transponder is reduced.

The utility model discloses a method for fixing a panel antenna. The method comprises that a bearing support is supplied, the bearing support comprises a base part and an inclined face, the side of the base part is inclined to extend to form the inclined face, a plurality of through holes are arranged on the base part and the inclined face, the antenna which is in a metal sheet structure is provided, the antenna comprises a main body part and an extending part, the side of the main body part is inclined to extend to from the extending part, a plurality of opening holes which correspond to through holes on the bearing support are arranged on the main body part and the extending part, the antenna is installed on the bearing support, a melted hot melting material is supplied and filled in through holes or opening holes, the hot melting material is cooled, and the antenna is held on the bearing support fixedly. By the aid of the method, the antenna can be fixed to the bearing support stably and fixedly, and the affect on an antenna testing result is reduced.

A portable uplink overspeed protection tester for a permanent magnet synchronous tractor elevator comprises a safety transformer with a tap. A primary coil of the transformer is connected with an electric supply 220 VAC power source. The number of secondary coils of the transformer is three, the first secondary coil outputs the 220 VAC voltage, the second secondary coil outputs the 110 VAC voltage, and the third secondary coil outputs the 24 VAC voltage. The portable uplink overspeed protection tester can be placed in a tool box, and field inspecting and carrying are convenient. Operation is easy, the tester only has one path of mains input, two paths of output and two signal lines, a bolt mode is adopted in power input line connection, a line clip mode is adopted in connection of all output lines and the signal lines, and during using, line connecting is easy and quick. An operation panel only has one main power switch, one starting / stopping button and the like, and operation is easy.

The invention relates to the field of detection technology, in particular to a method for measuring the hydroxy polybrominated diphenyl ether in a plant sample. The method comprises extraction, secondary extraction, chlorophyll removal, purification, and analysis. The analysis method uses a combined analysis method using ultra-high performance liquid chromatography-electrospray ion source-series triple quadrupole mass spectrometer combined analysis method. The chlorophyll removal uses a nano magnetic molecular material as a selective adsorbent. The method for measuring hydroxy polybrominated diphenyl ether in plant samples uses the method of ultra-high performance liquid chromatography-electrospray ion source-series triple quadrupole mass spectrometer combined analysis method, which is simple, rapid and sensitive. Therefore the separation of OH-PBDEs homologs and isomers can be well achieved, and their accurate qualitative and quantitative analysis can be achieved. And magnetic molecularly imprinted material is used as a selective adsorbent in the process, which has higher selectivity and better adsorption effect.

The invention discloses a strain gauge based side slipping detection method and device. The device comprises a steel plate, an elastic induction carpet, a strain gauge array, a main control unit and a display unit, wherein the elastic induction carpet is arranged on the steel plate; the strain gauge array is arranged in the elastic induction carpet; the main control unit is used for detecting an input signal of the strain gauge array; the display unit is used for displaying an output result of the main control unit. The strain gauge array is provided with two groups of sensitive grids to eliminate influences of gravity; a transverse side slipping force and a side slipping amount are obtained by the main control unit according to changes of resistance of two groups of the sensitive grids. The total thickness of an induction part of the device is only 5mm so that the operation difficulty of constant-speed straight-line driving of a driver is greatly reduced when vehicle tires passes in a yard (factory); meanwhile, influences on a final detection result are also greatly reduced. The automatic reading, displaying and transmission of the transverse side slipping force and the side slipping amount data can be realized, and the strain gauge based side slipping detection method and device are more intelligent and more efficient.

The present invention discloses a sampler, comprising: a conical container comprising a first half cone and a second half cone, the first half cone and the second half cone being capable of rotating relative to each other around a rotation axis to switch between a contracted state and an expanded state of the conical container; and two semicircular bottom surfaces which are rotatably connected to the bottom edges of the first half cone and the second half cone respectively, wherein the shapes of the two semicircular bottom surfaces are matched with the shape of the bottom surface of the conical container. The invention further discloses a solid oxidizability testing device and a solid oxidizability testing method. Through the structural design of the sampler, the sampling looseness is consistent, so that the sampling repeatability is ensured, and the accuracy and reproducibility of a solid oxidizability test result are further improved. Automatic control is adopted, the efficiency is higher, and the experiment accuracy is more ideal.

A bathroom ceramic surface defect detection method comprises the following steps: collecting an original image of bathroom ceramic, and constructing a bathroom ceramic surface defect image data set; expanding bathroom ceramic surface defect images, and then making all the bathroom ceramic surface defect images into a bathroom ceramic surface defect data set; constructing an improved Center Net defect detection model by utilizing a Tensorflow and Keras open source deep learning framework; inputting bathroom ceramic defect images into the improved Center Net defect detection model in batches, and iteratively training the model to finally obtain a bathroom ceramic surface defect detection model; after the training is completed, inputting a test set sample into the bathroom ceramic surface defect detection model, and verifying the robustness of the improved Center Net defect detection model; and inputting a bathroom ceramic surface defect image to be detected into the tested bathroom ceramic surface defect detection model, and carrying out defect detection. According to the invention, manual defect detection can be replaced, and the detection efficiency and the detection precision are obviously improved.

The invention discloses a rowing machine-based cardiorespiratory endurance testing method, and is applicable to cardiorespiratory exercise capacity testing in nationwide fitness programs. More specifically, a testing system consisting of a rowing machine body, a testing analysis platform, a pull data acqusition module and a heart rate acqusition module is utilized to guide a subject to finish two groups of stable continuous pull actions with same pull resistance and pull frequency and different pull powers in a set time so as to monitor heart rate response of the subject in real time, establish a linear model between the stage movement heart rate and the pull power and calculate the pull power corresponding to the highest heart rate of the subject to serve as an evaluation index of the cardiorespiratory endurance. Whole-course real-time guide is realized by using sound, light and video signals, the exercise limit is not required to be reached, the method is suitable for a broader crowd of people and is safer, the testing result can objectively reflect the weakness of the cardiorespiratory endurance, a personalized and differentiated fitness plan can be made for the subjects, the exercise effect is improved and scientific guidance is provided.

The invention discloses a method for testing the heat-conducting property of an irregular sample. Heat insulation treatment is carried out on part of the surface of a to-be-tested sample, so that heatexchange between the sample and the external environment can only be carried out through a specific surface, an internal heat transfer path is restrained, and the test is more sensitive to to-be-tested parameters selectively; during testing, theto-be-tested sample is enabled to be in a constant-temperature T0 state, a constant-temperature T1 state with a strong convective heat transfer coefficient on the surface and a surface approximate heat insulation state in sequence, and an unsteady-state heat transfer process of heat exchange between the interior of the to-be-tested sample and the environment is constructed. According to the invention, the stored energy of the to-be-tested sample is used as a heat source or a heat sink, internal and external heat transfer test is realized without damaging the sample, and the heat shielding effect caused by non-uniform sample surface good heat conduction materials can be avoided; and heat insulation measures are taken on part of the surface of the sample, so that the sensitivity of the test on part of variables can be selectively improved and the sensitivity on other variables can be inhibited when multiple variables exist in heat conductionof the sample.

The invention discloses a normal loading device for a fretting fatigue test. The normal loading device comprises a transmission device, a power source device, a supporting device and a clamping device; the two sides of the power source device are connected with the transmission device and the clamping device respectively; the clamping device is provided with a test piece and is connected with a computer through a data line; an incomplete gear of the transmission device is hinged to a connecting rod; the incomplete gear is connected with a box body through a return spring; one side of a rack ismeshed with a pinion; the power source device comprises a hydraulic cylinder, a hydraulic cylinder support, a bearing, a first roller and a hydraulic cylinder base; an output shaft of the hydraulic cylinder is provided with the bearing and the first roller; the two sides of the first roller are in contact with a second roller at one end of the connecting rod; the supporting device comprises a base, a supporting table, an anti-skid damping pad and a supporting table rear cover; a fretting pad bracket of the clamping device is fastened on the base; and a pressure sensor is arranged in the fretting pad bracket, has the two ends in contact with the rack and a fretting pad connecting rod respectively, and is connected with the computer through a data line.

The invention provides a gasket elasticity test tool, which includes upper and lower clamping blocks for clamping and compressing the gasket to be tested. The opposite ends of the two clamping blocks are correspondingly provided with upper and lower positioning planes. The test tool also includes a supporting base, The lower clamping block is vertically adjustable supported by the support adjustment mechanism on the support base, and the support adjustment mechanism has a transmission connection with the lower clamping block to drive the lower clamping block to move in the vertical direction. In the driving part, a support positioning platform is provided beside the lower clamping block on the support base, and the support positioning platform has a support positioning plane for contacting and press-fitting with the upper positioning plane, and the support positioning plane and the lower positioning plane are at The height difference in the vertical direction is equal to the set test thickness of the gasket to be tested. The elastic test tool does not need to use positioning pads of different thicknesses to meet the test requirements of washers of different sizes as in the prior art, and the manufacturing cost of the tool is low, and the test is quick and convenient.

This invention discloses a method for testing if there are Gones-proteins in urine, which applies a centrifugal method realized under the lab condition to replace the filter method needing heat preservation to deposit and separate the Gones-proteins, which greatly reduces the influence of temperature to the test result. Since this invention eliminates albumins and globins and heats Gones-proteins only, it increases its dissolution ability and is in favor of getting more accurate test result.

The invention relates to externally-applied finish paint performance testing, and particularly relates to an externally-applied finish paint weatherability testing method. The method comprises the following steps: step one, putty layer applying: applying a putty layer on each test plate; step two, primer coating: coating the putty layer of each test plate with a primer matched with a to-be-tested finish paint; step three, to-be-tested finish paint coating: coating the primer of each test plate with the to-be-tested finish paint; step four, exposure testing: placing one test plate in an indoor shade place to be used as a control, placing the rest of the test plates in an exposure place for a long time, and performing exposure testing; step five, data recording: in periods of time of the exposure testing of the test plates, testing color difference data, testing glossiness data and evaluating an efflorescence grade; and step six, repeating the step five, and performing at least 7 times of observation recording. The weatherability of different finish paints can be simply and quickly obtained, and the externally-applied finish paint aging conditions can be actually reflected.

The invention discloses a cigarette smoke aerosol testing device. The device comprises a smoke sampling device, a diluting device and an aerosol testing device which are connected by a pipeline in sequence. The device has the following technical effects: 1, real-time testing of the grain size distribution of fresh cigarette smoke aerosols is realized; 2, the smoking forces generated by the cigarettes come from the smoking machines with bell-shaped suction curves and the smoking scheme is standard; 3, the effects of dilution on the testing results of the aerosols are reduced; and 4, partial flow sampling is adopted, thus reducing the particulate matters entering into the diluting system, reducing the probability of particle deposition and reducing the problem of easy blocking of the diluting system and the valves.

The invention relates to a distributed pressure test device of an extrusion oil film damper. The test device comprises a fiber grating sensing test device, a first support, a turntable shaft, a secondsupport, a coupler, a drive motor and a base. Besides, a testing method for the distributed pressure of an extrusion oil film damper includes the steps of fiber grating sensing sensor arrangement, sensor packaging, parameter calibration, and temperature compensation and decoupling. The test device has a simple structure and is capable of simulating the distributed pressure test change of the extrusion oil film damper of a gas turbine engine under the complicated working conditions like rotor imbalance and fulcrum misalignment. The spatial pressure distribution association relationship of circumferential multiple points and axial multiple surfaces of the extrusion oil film damper under the complicated working conditions can be tested by the pressure testing method. The fiber gating sensorhas advantage of one line with multiple points, high sensitivity, and small size; the sensor is arranged conveniently; and the influence and modification on the extrusion oil film damper are low. Withtemperature compensation and decoupling, the influence on the test result by the temperature change is reduced, so that the pressure test result becomes accurate.

The invention discloses an integrated circuit hardware Trojan horse detection method based on multi-parameter bypass analysis. The method comprises the following specific steps: (1) carrying out sector division on an integrated circuit netlist; (2) generating a multi-parameter bypass feature vector; (3) obtaining a Bayesian classifier; (4) detecting the integrated circuit to be detected; (5) judging the prediction label. Through sector division and generation of the multi-parameter bypass feature vector, the accuracy of integrated circuit hardware Trojan horse detection is improved, and Trojanhorse positioning is realized.

The invention discloses a measuring device applied to a multilayer coil plate. The measuring device comprises two magnetic field output probes. The magnetic field directions of two magnetic field output probes are perpendicular to each other. The input end of each magnetic field output probe is connected with an independent signal generator. Two signal generators output sinusoidal signals with thefrequencies of 20 to 30 Hz and 150 to 200 Hz respectively. The measuring device further comprises a signal output circuit. The output end of the signal output circuit is connected with a controller.The signal output end collects the inductance energy-storage voltage on the multilayer coil plate, and sends the voltage value to the controller. According to the invention, the deficiencies of the prior art can be improved, and the detection accuracy of a PCB board is improved.

The invention discloses a method for detecting effective action time and bactericidal efficacy of a sterilization product. The method comprises the following steps of: (1) selecting a required microbial carrier kit according to an actual action area before testing; (2) screening effective action time by using the carrier kit; (3) carrying out a unit area sterilization efficacy test by utilizing the carrier kit; and (4) calculating the sterilization efficacy per unit area by utilizing a formula and analyzing a test result. The method is suitable for research and development of sterilization products, the effective action time of the products can be rapidly determined, the sterilization efficacy per unit area in simulated use can be accurately detected, meanwhile, the matched carrier for thetest enables microorganism distribution to be more average, test variables to be closer to reality and environmental variables to be controllable, and therefore uncertainty of test results is reduced, and the reliability is improved. In addition, the scheme has the characteristics that the kit can be repeatedly used, the test operation is simple, the cost is low, the repetition is easy and the like, and is very beneficial to debugging and evaluating the performance of a new product in the research and development process of a novel sterilization product.

The invention relates to the technical field of mechanical environment tests and particularly discloses a horizontal vibration test device capable of directly hanging a test piece. The test device comprises a vibration table, a horizontal slip and a hanging fixture, wherein the vibration table is fixedly connected with the horizontal slip through a connector; the hanging fixture passes through and is arranged on the horizontal slip, and the lower end can clamp the test piece; through changing the mounting direction of the hanging fixture on the horizontal slip, axial or radial mounting of the test piece is realized; through reciprocating vibration of the vibration table, the hanging fixture on the horizontal slip and the test piece clamped at the lower end are driven to perform reciprocating vibration in the axial or radial direction. High requirements on equipment when a horizontal vibration test is carried out on a rack-like product through large fixture transit presently can be solved, influences on a test piece test result by modal characteristics of the large fixture are reduced, and besides, the horizontal vibration test device can also complete a horizontal vibration test on a conventional product according to needs, and the application range and the test ability of the existing horizontal slip are improved.