285results about How to "The test results are objective" patented technology

The invention discloses a rapid lens flaw detection method and an apparatus thereof. The method comprises the following steps: equally dividing the surface of a lens to be detected into n<2> parts, respectively obtaining the images of all the parts, and obtaining n<2> images within a preset time which is used for controlling the image obtaining rate; 2, carrying out median filtering, black hat transformation and binary processing on the n<2> images respectively, and partitioning off defective images; 3, carrying out opening operation on the defective images to filter out non-flaw interference parts; and 4, drawing contours of the defective images subjected to non-defective interference filter, there are flaws on the surface of the lens to be detected if there is a counter, and no flaws are on the surface of the lens to be detected if there is no counter. The rapid lens flaw detection method provided in the invention allows scratches on the lens to be clearly detected through a surface defect detection method based on the mathematical morphology under the high speed motion of a platform, and defect types to be effectively discriminated, and has the characteristics of fast speed, objective detection result and the like.

The invention provides a system for the quantitative detection of a quanta dot mark test bar and a detection method thereof. The system comprises a quanta dot mark test bar, a test bar rack, a scanning system, a photovoltaic conversion system, an analog-to-digital converter, a data processing device, an output display device, a printer, a keyboard and an IC card matched with the test bar. The data processing device reads the parameters of the IC card and then controls the test bar rack to move so as to make the scanning system automatically scan a test bar detection band and a quality control band, the acquired signals are transmitted back to the data processing device by the photovoltaic conversion system and the analog-to-digital converter, so that the optical density values of the detection band and the quality control band undergo recognition, concentration counting and technical analysis, and the detection results are finally transmitted to the output display device for display. The system has the advantages of high detection sensitivity, objective results, flexible use, and the like.

A method of using an electronic nose for detecting freshness of river crucian carp includes the steps: (1) placing river crucian carp samples to be detected into a sample container, sealing and standing for 20-40min at the room temperature; (2) inserting a filtered gas probe of the electronic nose into the sample container for 40-60s, and collecting top gas; (3) enabling the gas to enter a gas sensor array for detection and analysis; and (4) collecting and storing related data of gas according to the specific process: (4-1) extracting response characteristic values of the gas sensor array, wherein the response characteristic values include an initial value, a stable value, rise time and rise rate; (4-2) curing a non-linear stochastic resonance algorithm into a digital signal processor internally arranged in the electronic nose, and inputting the original response characteristic values of the electronic nose into a DSP (digital signal processor) and outputting a signal-to-noise-ratio spectral characteristic value by computing; and (4-3) computing a freshness value of the river crucian carp according to a freshness prediction model and the signal-to-noise-ratio spectral characteristic value. The method is simple, convenient, rapid and effective.

The invention discloses a method for using an electronic nose to detect the freshness of chicken. The invention aims at providing a method which uses the electronic nose to detect the freshness of chicken, has the advantages of rapidity and simpleness, easy use and objective and reliable detection result, and can reduce the impact of storing conditions to the detection result. The method comprises the following steps: a chicken sample to be detected is put into a sealed container and then heated in water bath with thermostatic control; the heated chicken sample is put into a test room, and then smell sent by the sample is detected by a gas sensor array which consists of four gas sensors of different types; the data which is aquired by the gas sensor array is collected and processed; and then the freshness of chicken is judged according to the processing result of the data. The detection method uses an electronic nose which consists of four gas sensors of different types to detect the chicken sample, and has the advantages of objective, accurate, and fast detection result, good repeatability, simple analysis process and small using amount of sensors, and reduces the extraction of eigenvalues.

The embodiment of the invention provides a testing method for a single board of a communication apparatus, which comprises the following steps: reading message configuration attributes, and generating a testing message according to the message configuration attributes; transmitting the testing message to the tested single board; receiving a message returned from the tested single board, judging whether the received message is the message formed after the testing message is processed by the tested single board, and if so, checking the message to obtain the check result; and making statistics on the check result, and generating a test report according to the statistical result. The testing method can test the problems in the actual operation process of the network, and obtain a reliable andtrue test result. In addition, the testing method is automatic in the whole testing process without manual intervention, thereby reducing the dependence on skills or experiences of testing personnel and obtaining a more objective test result.

The invention discloses a method for preparing a road (bottom) base material cylindrical test piece simulating on-site rolling effect. The vibration compaction test method is adopted to determine the maximum dry density rhodmax and the optimal moisture content wo and the vibration method is adopted to prepare the cylindrical test piece. The operation process of the method corresponds to the on-site practical construction process. The maximum dry density and the optimal moisture content of the tested (bottom) base material and the prepared test piece coincide with the on-site practical rolling effect. The test result of the performance of the test piece is objective and real; and the method has good repeatability. Steps of measuring the moisture content of dried aggregates and moisture content of dried test samples, a step of interlayer broom-finish treatment, a step of flattening the surface of the samples and the like are saved; the material feeding process is simplified; and the working efficiency is improved. The method has the advantages of simple operation, reliable result and good repeatability.

The invention discloses a detection method adopting SIFT (Scale-Invariant Feature Transform) to detect a breakage fault of rotary double lugs. The method comprises the following steps of: firstly, carrying out local feature point matching on the image of a contact net supporting and suspending device and the image of a rotary double-lug template by utilizing an SIFT algorithm; secondly, screening successfully matched feature points by utilizing an improved RANSAC (Random Sample Consensus) algorithm and positioning the rotary double lugs; thirdly, extracting an upper boundary curve of the rotary double lugs by utilizing a boundary tracing method, and drawing a curvature curve of all points on the curve; and finally, carrying out difference treatment on the drawn curvature curve and the curvature curve under a normal condition at the corresponding point to judge whether the lugs have a breakage fault or not. The method provided by the invention can accurately identity the lug with the breakage fault in the image of a complex contact net suspending device, and greatly improves detection efficiency in comparison with an artificial screening method.

A method of using an electronic nose for detecting freshness of tilapia includes the steps: (1) respectively placing back and belly samples of tilapia to be detected into a sample container, and standing for 20-40min at the room temperature; (2) inserting a sample injection pinhead of the electronic nose into the sample container at the normal temperature, inserting an air filter filled with activated carbon into the sample container to balance air pressure, starting the electronic nose, and enabling the electronic nose to suck gas given out by the standing samples inside; (3) detecting the gas given out by the samples by the aid of a gas sensor array inside an electronic nose gas chamber, wherein detecting time is 40-60s, and cleaning time is 3-8min; (4) setting an experimental period interval as 10-12 hours; and (5) collecting data acquired by the gas sensor array, performing data processing for the acquired data, and computing so that a freshness value of the tilapia is obtained. The method is simple, convenient, rapid and effective.

The invention discloses a mobile phone curved glass typical defect online detection device and method. The online detection device comprises a work-piece transmission device, wherein the work-piece transmission device comprises a transmission guide rail, a plurality of transparent objective tables, a motion control card and a motor, and a rotating table; a plane part detection device, a curve edgedetection device and a R angle part detection device for forming three stations are orderly arranged along a transmission direction of the work-piece transmission device; the online detection methodperforms previous training learning on the background and scratch, burning, edge breakage, pit and like typical defect sample images through a convolutional neural network, and original images collected at three stations are divided into multiple sub-images consistent with the size of the training sample, the segmented sub-images are quickly identified, thereby judging whether the original imageshave defects or judging the defect variety. The scratch, burning, edge breakage, pit and like typical defect sample images can be online detected in real time, and the detection device has the features of being fast, efficient, precise and stable.

The invention discloses a lens detection method and device. The method comprises the following steps: step 1, extracting pixels with brightness higher than a brightness threshold in an image shot by a to-be-measured lens based on the predetermined brightness threshold; step 2, in the extracted pixels, determining two pixels having the largest distance, and determining the distance between the two pixels; and step 3, comparing the largest distance with a predetermined distance threshold, and determining whether the to-be-measured lens is qualified according to a comparison result. By adoption of the lens detection method and device disclosed by the invention, the detection can be performed in a unified and objective manner to avoid the problems of high misjudgment rate and easy detection leakage caused by manual judgment, so that the detection accuracy is relatively high; and moreover, since the image processing method adopted by the lens detection method and device disclosed by the invention is relatively simple, it is easy to implement, the processing efficiency is relatively high, the detection time can be effectively shortened, which is conducive to improving the production efficiency.

The invention relates to a test result evaluation method of a fault recorder. The method carries out overall evaluation and quantitative analysis on the basis of the performance of the fault recorder of an electric power system according to the detection standard of the electric power system industry, researches and invents a test result evaluation method which is applicable to the fault recorder of electric power lines and generator transformer set, and provides intuitive test basis for type selection test of the fault recorder of the large electric power system.

The invention discloses a fluorescence PCR (Polymerase Chain Reaction) detection kit for group B streptococcus. The fluorescence PCR detection kit comprises the following components: a PCR reaction liquid, an enzyme mixed liquid, a group B streptococcus reaction liquid, an internal reference plasmid, a positive reference and a negative reference. The fluorescence PCR detection kit is used for overcoming the defects that more time is wasted by using a gold standard bacterial culture method, a serological diagnosis method has hysteresis and a gene sequence determination method is more complex. The fluorescence PCR detection kit has the advantages of high sensitivity, good specificity, strong repeatability, rapid and objective detection result and the like so as to have a wide application prospect in the field of in-vitro diagnosis of the group B streptococcus.

The invention provides a nucleic acid dual fluorescence PCR (Polymerase Chain Reaction) detection kit for an influenza A/B virus. The detection kit comprises an RNA (Ribonucleic Acid) enzyme inhibitor, an RT-PCR (Reverse Transcription-Polymerase Chain Reaction) liquid, an enzyme mixed liquor, an influenza A/B virus dual reaction liquid, a positive control and a negative control, wherein the influenza A/B virus dual reaction liquid comprises a component (1) which consists of a pair of primers for detecting the influenza A virus and a probe for detecting the influenza A virus and a component (2) which consists of a pair of primers for detecting the influenza B virus and a probe for detecting the influenza B virus; and the enzyme mixed liquor comprises a Taq enzyme and a reverse transcription enzyme. By adopting the detection kit, the influenza A and B viruses can be detected at the same time, and the problem that only one influenza virus can be detected in one reaction in the conventional product is solved. The detection kit has the advantages of easiness and convenience for operating, high repeatability, quick and objective detection result and the like, and has a great application prospect in the field of in-vitro diagnosis of influenza viruses.

The invention relates to a method and a device for testing a dynamic range of a camera by utilizing a closed LED (light emitting diode) light source lamp box, and belongs to the field of testing. The method comprises the following steps of partitioning a closed box into two adjacent mutually independent first/second testing spaces; arranging a front plate with a camera testing hole in the front part of each testing space; respectively arranging an LED light source in the two testing spaces; respectively arranging a transparent testing card between each LED light source and each front plate; arranging movable sliding rails with movable sliding blocks in the longitudinal directions of the two testing spaces; arranging the LED light sources on the movable sliding blocks; connecting control ends of the LED light sources, control ends of the movable sliding rails and an image output end of camera lens to be tested with I/O ports of a control computer. According to the method and the device for testing the dynamic range of the camera by utilizing the closed LED light source lamp box, which are disclosed by the invention, an closed testing light source environment isolated from the outside is provided, the two light sources are completely independent without any crosstalk, and the configuration of optical parameters of the LED light sources and the adjustment of the distances and the positions of the LED light sources and a device to be tested are controlled by the computer, so that the whole testing device is convenient to operate, and the measurement accuracy is largely improved.

The invention relates to a green tea quality analysis apparatus based on an intelligent electronic nose system, and a method. In the prior art, detection on volatile gases in beverage samples is performed through human body organs, such that technical problems of subjective difference and harm on human body exist. A purpose of the invention is to solve the technical problems in the prior art. The apparatus comprises a gas collection unit, a gas sampling unit, a treatment unit and a control unit, wherein the gas collection unit comprises a gas chamber, a sample chamber, a first communication pipe and a second communication pipe, the gas chamber, the sample chamber, the first communication pipe and the second communication pipe form a loop-shaped circulation path, the gas sampling unit is connected with the gas chamber, the treatment unit and the gas sampling unit are connected, and a gas inlet mechanism, a gas outlet electromagnetic valve and the gas sampling unit are respectively connected with the control unit. According to the present invention, the electronic nose system is built, such that the detection result is comprehensive and objective, and hazard of sample gas on human health is avoided; and gas is subjected to circulation flow during gas sampling, such that gas mixing is uniform, and detection data is accurate.