254results about How to "Comprehensive detection effect" patented technology

The invention discloses a vehicle target detection method and aims to solve the technical problems that a traditional method is complicated in detection process, large in calculated quantity and inaccurate in detection. According to the method, a VOC 2007 vehicle dataset is made according to an ImageNet dataset; a training model is configured by the adoption of a caffe deep learning framework andan improved Faster R-CNN algorithm, and an Inception network structure is introduced to perform feature extraction on an image; a sliding window with the area of 642 is additionally arranged and usedfor detecting a small target; a target detection problem in a scene is converted into a target dichotomy problem, and a vehicle target is detected and recognized; an RPN loss function is used to perform optimization; and a SoftMax algorithm is utilized to classify vehicle image features, and therefore a final result is obtained. The method has the advantages that the calculated quantity of the image features is reduced, the detection process is simplified, the image feature extraction capability is enhanced, network recognition precision is improved, and the detection result is more comprehensive.

The invention relates to a regulation and control testing device for preparation of bio oil through quick thermal cracking of biomass and belongs to the technical field of biomass recycling and energy equipment. The device comprises a fluidized bed pyrolysis reactor, a fixed bed thermal cracking reactor, two multi-path sampling valves, two gas chromatographs, a three-level condenser, three oil tanks and other parts. The device has the testing functions of quick pyrolysis, catalytic pyrolysis, on-line analysis and regulation and control, grading controlled condensation and the like, has a compact structure, works stably, can perform full component analysis and catalyst evaluation of pyrolysis gas, can reliably perform quantitative analysis and can effectively perform regulation and controltests of the preparation of the bio oil through quick thermal cracking of the biomass.

The invention discloses a network anomaly detecting method and device. The method comprises the steps that a plurality of detecting items are obtained, the detecting items comprise dynamic link library files of a browser and one of more of network connecting state information, network configuration information and browser configuration information; feature information of the detecting items is extracted respectively; and according to the feature information corresponding to the detecting items respectively, the detecting items are detected, and at least one anomaly item is obtained. According to the network anomaly detecting method, the network anomaly reason can be detected and analyzed automatically, comprehensively and accurately, accordingly, an accurate foundation is provided for network repairing, network repairing can be carried out timely and conveniently, and user experience is improved.

The invention discloses a detection method of a pyrolysis-coking behavior of coal and an apparatus therewith. The detection method includes following steps: selecting and installing the detection apparatus and performing detection, wherein the performing detection includes the steps of: preparing detection, manufacturing a paper tube, manufacturing a filter paper bar, manufacturing an asbestos round cushion, installing a coal cup, performing coal sample reduction, feeding the coal sample into a furnace, starting detection, and measuring obtained data. The apparatus is composed of: a comprehensive control cabinet, a precision electronic balance, a furnace body, a furnace body support, the coal cup, a coal cup support, a colloid layer measurement system, a pressurizing system, a volume curve measurement system, an upper-part structural support and a pressure controlling system. According to the invention, during detection of the thickness of a coal colloid layer and a volume curve, expansion pressure, heat absorption and release peak temperature, weight loss amount and weight loss rate are detected, so that the detection method includes many detection indexes and achieves more comprehensive detection result, thereby forming a detection method linkage mechanism. The detection method is high in precision of a result, is strong in reliability, and can show the property characteristics of coking coal, semi-coke and mature coke in a coke oven.

The invention discloses a testboard used for detecting automatic transmission performance and a fault. The testboard comprises a pedestal, a variable-frequency and variable-speed motor and a load loader, wherein the variable-frequency and variable-speed motor and the load loader are arranged on the pedestal. An input terminal of an automatic transmission is connected with the variable-frequency and variable-speed motor and an output terminal is connected with the load loader. A computer inputs an instruction to a frequency converter control module so as to make the variable-frequency and variable-speed motor simulate an engine and provide power for the automatic transmission. The computer inputs the instruction to a loading control module so as control the load applied to an automatic transmission output shaft by the load loader and simulate a pavement state of a wheel. Actual data collected by a sensor is returned to the computer and compared with theoretical data. If the two data are consistent, the automatic transmission performance is qualified and there is no fault. If the two data are inconsistent, the automatic transmission performance is not qualified and there is the fault. A frequency conversion speed regulator can move and rotate back and forth, up and down relatively to the pedestal and a loading device can move left and right relatively to the pedestal. Therefore, the apparatus and the method can be suitable for different models of the automatic transmissions.

The present invention discloses a GPS data validity determination method and device, and relates to the satellite navigation technology field. The method comprises: obtaining course angle measured value, the position measured value, the horizontal position precision factor and the horizontal configuration drift of an object through a GPS; performing data fusion location of the object according to the course angle measured value so as to obtain the location covariance of the object and the estimated value of the object position; calculating the difference of the position measured value and the position estimated value as a measured error; and if any one of the location covariance, the measured error, the horizontal position precision factor or the horizontal configuration drift is larger than a corresponding threshold, determining that the data obtained at present is invalid through the GPS. The GPS data validity determination method and device can improve the determination reliability of the GPS data validity.

The invention relates to a construction safety alarm which is composed of a USB interface, a microphone, a storage battery, a loudspeaker, a single-chip microcomputer circuit board, a storage chip, a single-chip microcomputer microcontroller, a clock chip, an antenna, a height inductor, a satellite positioning receiver chip, a charging socket, a power switch, a wireless data transmission module, a high-voltage strength inductor, a liquid crystal touch screen, a combustible gas detection sensor, a button, a photoelectric indicator and a machine case. The construction safety alarm can carry out safe area recognition and early warnings on outdoor construction workers, the construction safety danger detection face of the alarm is wider and more comprehensive and effective, the positive safety protection function is achieved, engineering construction environment facility safety and machine safety are effectively guaranteed, and personal injuries and economic losses caused by various accidents are reduced.

The invention provides a signal receiving conditioner of a UHF partial discharge detecting system, comprising a broadband amplification module, a broadband detection output module, an intelligent switch module and a frequency-selecting conditioning-outputting module, wherein the broadband amplification module is used for performing band-pass filtering and signal amplification on received radio-frequency signals so as to obtain broadband amplification signals; the broadband detection output module is used for outputting the broadband amplification signals; the intelligent switch module outputs the broadband amplification signals to the frequency-selecting conditioning-outputting module when being used in a specific interference environment; and the frequency-selecting conditioning-outputting module is used for mixing the broadband amplification signals and preset local oscillator signals, filtering intermediate-frequency signals obtained by mixing according to the frequency spectrum of partial discharge radiation signals, and extracting the partial discharge radiation signals from the intermediate-frequency signals. The signal receiving conditioner of the UHF partial discharge detecting system provided by the invention combines the broadband amplification detection technology and the mixing technology, extracts the partial discharge radiation signals from the radio-frequency signals in a detection field, and filters interference signals so as to enable the system to reach the optimum detection sensitivity and provide a hardware basis with complex anti-interference capability for the detection system.

The invention discloses a method for detecting a fingerprint spectrum of Guigui zhugan decoction. The fingerprint spectrum is established by the following steps: S1, preparing a Guigui zhugan decoction test sample solution; S2, preparing a reference solution; S3, absorbing the test sample solution and the reference solution precisely and respectively and injecting the solutions into a liquid chromatograph, and recording a chromatogram map; and S4, outputting a Guigui zhugan decoction fingerprint spectrum obtained in the S3 into a traditional Chinese medicine chromatographic fingerprint similarity evaluation system, selecting chromatographic peaks exiting in all chromatogram maps of Guigui zhugan decoction with different batches as common peaks and generating a contrast fingerprint spectrumof the Guigui zhugan decoction based on an average value calculation method, and calculating relative retention time and relative peak areas of all common peaks. According to the invention, the detecting method having advantages of high stability and precision, and high reproducibility and the like is capable of analyzing the effective components in the Guigui zhugan decoction accurately and hasthe important significance in evaluating the quality of the Guigui zhugan decoction comprehensively and objectively.

The invention provides a fluorogenic culture medium of Enterobacter sakazakii, a test kit and a test method thereof, and relates to a method for testing microbe and a composition used by the method. The fluorogenic culture medium comprises the compositions as follows: 8 to 20 grams of peptone, 4 to 7 grams of beef extract powder, 4 to 7 grams of sodium chloride, 1.0 to 2.0 grams of cholate, 12 to 20 grams of agar, 0.05 to 0.5 grams of X-a-glucopyranoside, 0.01 to 0.04 grams of Na2CO3, 0.3 to 2.0 grams of ferric ammonium citrate, and 0.3 to 2.0 grams of sodium thiosulfate. The test kit consists of the fluorogenic culture medium of Enterobacter sakazakii, an enriched liquid A ,namely buffer peptone water culture medium, and an enriched liquid B, namely modified lauryl sulfate pancreas peptone broth. The test kit is configured simply, and the test method has high sensitivity in detection, so the method is suitable for treating large flux samples.

The invention discloses a chromogenic medium used for detecting esherichia coli O157:H7. The medium comprises agar, peptone, beef extract powder, sodium chloride, sorbitol, inositol, neutral red, beta-galactosidase chromogenic substrate, beta-glucuronidase chromogenic substrate, isopropyl-beta-D- thiogalactopyranoside, natrium taurocholicum, potassium tellurite and cefixime. The chromogenic medium used for detecting esherichia coli O157:H7 of the present invention has the advantages of high sensitivity, good specificity, direct bacterial strain discrimination according to colony color, short detection period and strong operationality, is suitable for treating high-reflux samples, is capable of comprehensively, systematically and accurately detecting and preliminarily identifying the esherichia coli O157:H7 in food production and environment, and provides a novel approach for rapidly detecting the microbes.

The invention discloses a water supply pipeline leakage identification method based on signal time-frequency characteristics and support vector machine, belonging to the technical field of water leakage detection and positioning. The method includes: inputting a detected signal; performing feature extraction of the input signal; the extracted feature set is input to the optimized support vector machine, and the feature is recognized by the support vector machine. The support vector machine outputs a recognition result according to the input signal characteristics, and determines whether the signal is a leakage signal or a non-leakage signal. Based on the intrinsic mode function, approximate entropy and principal component analysis, three time-frequency characteristics of leakage signal areproposed by using its randomness and centralized frequency spectrum. Using these features to construct feature matrix as input of support vector machine, support vector machine is used as classifierto recognize the signal and output recognition results, thus solving the existing pipeline leak detection technology problems such as modeling difficulty coefficient is large, high misjudgment rate ishigh.

The invention provides a low voltage power distribution line line breaking fault identification method and a low voltage power distribution line line breaking fault identification device. Fourier transform of a phase line current signal and a total leakage current signal of a first preset sampling point and Fourier transform of a total leakage current signal, an A phase current signal, a B phase current signal, and a C phase current signal of a second preset sampling point are carried out to acquire the amplitudes and the phase angles of the above mentioned various signals, and based on the amplitude, the phase angles, and the current setting values of the above mentioned various signals, whether a single-phase branch protection criterion and/or a three-phase main branch protection criterion are/is satisfied is determined. By combining the 220V single-phase branch protection criterion and the 380V three-phase main branch protection criterion together, a complete fault detection and protection system is provided for low voltage power distribution system line breaking faults, and faults of a three-phase power distribution wire main branch and faults of a single-phase branch power distribution wire are identified accurately, and therefore whether a protection device is required to cut the faulted line is determined.

The invention provides a method for detecting fraud telephones. The method comprises the steps of obtaining search engine logs; extracting query assemblies comprising preset key fields within a preset time period from the search engine logs, screening the query assemblies, and performing rank ordering on the screened query assemblies according to query times; enabling the query assemblies having undergone rank ordering to be submitted to a search engine to be searched, and analyzing a search result so as to obtain seed official telephone assemblies and seed fraud telephone assemblies; establishing a telephone cooccurrence relation map according to the search result; and detecting whether the fraud telephones exist in the search result according to the seed official telephone assemblies, the seed fraud telephone assemblies and the telephone cooccurrence relation map. According to the method, the fraud telephones can be detected timely and effectively, service performance of the search engine is improved, and user loss is reduced. In addition, algorithm complexity of the method is low, and the method is easy to achieve, good in popularization and adaptability and objective, comprehensive and reliable in detection effect.

The invention provides a benzimidazole quinoline derivative, a preparation method and application in copper ion detection, and particularly relates to a 2-(4-N,N-bis-substituted styryl)-8-1H-benzimidazole) quinoline derivative. Particularly, 2-aminobenzoic acid is used for preparing 2-methylquinoline-8-carboxylic acid, then the 2-methylquinoline-8-carboxylic acid and o-phenylenediamine are subjected to condensation to obtain 2-methyl-8-(2-benzimidazolyl) quinoline, the 2-methyl-8-(2-benzimidazolyl) quinoline and N,N-bis-substituted benzaldehyde are subjected to condensation to obtain the benzimidazole quinoline derivative. A probe has the good complexation with copper ions, when the copper ions exist, derivation of the solution is observed with naked eyes, and the solution is changed from yellow to purple, absorption at the 418 nm position on an ultraviolet visible absorption spectrum is weakened, and a novel absorption peak appears at the 550 nm and gradually increases when the concentration of the copper ions is increased; the benzimidazole quinoline derivative can be used for real-time and rapid measurement of complex samples and can also be used for semiquantitative detection of micro/trace Cu2+ of environment samples from different sources.

The invention discloses a multiple-PCR detection method for pathogenetic bacteria in soil, which is characterized in that: multiple PCR is adopted to simultaneously amplify specific genes of enteropathogenic E. Coli, salmonella, Staphylococcus aureus, pseudomonas aeruginosa and Shigella flexneri for one time, namely phoA, ttrBCA, vicK, ecfX, ipaH and virA, and then PCR amplification products are detected by agarose gel electrophoresis. The multiple-PCR detection method overcomes defects of complicated operation, time and labor consumption and the like of the conventional pathogenetic bacteria detection technology, fully applies the multiple-PCR detection technology in detecting the pathogenetic bacteria in the soil, increases the types of the pathogenetic bacteria and number of pairs of primers as possible, and improves the specificity and sensitivity of the detection.

The invention discloses an optical fiber slope dam displacement settlement monitoring system which comprises an optical fiber osmotic pressure sensor, an optical fiber displacement sensor, an optical fiber grid settlement sensor, an optical fiber water level sensor and a demodulator, wherein the optical fiber osmotic pressure sensor, the optical fiber displacement sensor, the optical fiber grid settlement sensor and the optical fiber water level sensor are connected with the demodulator through optical fiber; light emitted from a laser in the demodulator is transmitted to different sensors through optical cables; optical signals with information amount to be measured can be reflected back from the sensors; information to be measured is demodulated after the optical signals reach the demodulator to be displayed on a screen; the optical fiber osmotic pressure sensor is used for detecting information of a phreatic line; the optical fiber displacement sensor is used for detecting displacement information of a slope dam body; the optical fiber grid settlement sensor is used for detecting settlement information of the slope dam body; the optical fiber water level sensor is used for detecting the water level information of the slope dam body.

The invention discloses a detection probe for DUOX2 gene mutation and a detection method thereof, particularly relates to a method for detecting DUOX2 gene mutation related to a congenital hypothyroidism (CH) pathogenic gene, and belongs to the technical field of molecular biology. A PCR primer sequence of a DUOX2 gene for detecting the CH is a nucleotide sequence as shown in SEQ ID No.1-SEQ ID No.18 in the sequence table. The detection probe has the advantages that the DUOX2 gene causing the CH is detected by utilizing new generation sequencing, and 24 new mutation sites which are not yet reported home or abroad are discovered. The detection probe applied to clinical gene mutation detection is beneficial to etiological analysis and diagnosis of CH, further recognition of mutation spectrum of the CH gene and further research on pathogenesis of CH.

The invention discloses a material high temperature mechanical property test system and method based on laser irradiation heating. The provided system and method can carry out mechanical property tests under a high temperature condition, and is capable of measuring the bearing situation of a simulated material in a service condition, when a first suddenly happens. The system comprises a laser device, a material testing machine, an infrared thermal imager, a data collection instrument, a 2D/3D DIC system, and an upper computer with embedded data analysis software. The laser device is used to irradiate and heat a sample material in a long distance. At the same time, a preset load is applied on the sample material. The test process is sampled and recorded by a CCD camera. The environmental temperature and whole field temperature of the sample are measured in real time by the infrared thermal imager. The temperatures of local parts of the sample material are measured in real time by utilizing the data collection instrument. The 2D/3D DIC system is used to detect and measure the deformation and destruction on the back of the sample material and transmits the measured data to the upper computer, and the upper computer carry out mechanical property analysis of the sample material according to the received data.

The present invention relates to color developing culture medium, detecting kit and detection method for Vibrio parahaemolyticus, and belongs to the field of food microbe safety monitoring technology. The detecting kit consists of color developing culture medium comprising bacterial specific enzyme in 0.05-0.95 g and mixed color developing substrate Y-glucoside, enrichment liquid A of pancreatic casitone liquid culture medium and enrichment liquid B comprising sodium chloride, polymyxin and broth. The detection method includes the enrichment culture of the sample in enrichment liquid A and enrichment liquid B, the culture of the two parts of enrichment cultured liquid in the color developing culture medium, and judging whether to exist Vibrio parahaemolyticus according to whether to have smooth raised purple colony of 2-3 mm diameter. The present invention has low cost, high detection sensitivity, short detection period and other advantages.

The invention provides a refrigerator. The refrigerator comprises a collecting circuit, a controller, a voice control circuit and a play circuit. The collecting circuit is used for collecting parameter information of the refrigerator. The controller is connected to the collecting circuit and judges whether a fault or an error exists in the refrigerator according to the parameter information, wherein if yes, the fault information or the error information is sent to the voice control circuit. The voice control circuit is connected to the controller and receives the fault information or the error information sent by the controller, determines the target voice content corresponding to the fault information or the error information and sends the target voice content to the controller. The play circuit is connected to the controller, receives the target voice content sent by the controller and plays the target voice content. Correspondingly, the invention further provides a voice prompt method for the refrigerator. According to the technical scheme, a user can directly judge the fault of the refrigerator according to the voice content, and the using experience of the user is enhanced.