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517results about How to "Improve judgment efficiency" patented technology

Cloud resource access control method based on dynamic cross-domain security token

The invention discloses a cloud resource access control method based on a dynamic cross-domain security token. The method includes that 1) an access agent is preset on a cloud resource service providing party and requests a dynamic security token for each dynamic temporary user to the cloud resource providing party; 2) the cloud resource providing party generates the dynamic security token, sets the access strategy and transmits the strategy to the dynamic temporary users; 3) a sharing secrete key is respectively set between each dynamic temporary user and the cloud resource providing party; 4) the dynamic temporary users conduct signing on the access request through the sharing secrete key and transmit the authentication request news to the cloud resource providing party; and 5) the cloud resource providing party conducts signing on the authentication request news through the sharing secrete key, authentication passes if signatures are identical, the access strategy of the dynamic security token and the access agent is judged, and the access request of the dynamic temporary users is responded according to judgment results. The method achieves the high-efficiency cross-domain authentication mechanism and is high in judgment efficiency.
Owner:INST OF INFORMATION ENG CAS

Method for acquiring addresses of network video programs

InactiveCN101635826ASolve the problem that it is difficult to get the address from the pageTroubleshooting automated address discoveryPulse modulation television signal transmissionTwo-way working systemsVideo playerNetwork addressing
The invention relates to the technical field of network communication, and provides a method for acquiring addresses of network video programs. The method comprises the following steps that: a browser is used to open a plurality of webpages having audio and video programs and a player is ready to play the programs; the player requests the webpages from a remote video server, the player acquires the network address of the request video source according to the parameters transferred by the webpages, and the data source is remotely read and played; and the interactive information between the player and the remote video server are acquired and then analyzed so as to acquire the addresses of the network audio and video programs. Because the mode of combining the browser control and the network address monitoring is utilized to find the network audio and video addresses, and the browser is used for judging whether the webpages include the audio and video player and can control the playing of the player, the problems that the audio and video webpage scripts are complex and that the FLV is difficult to acquire the addresses from the webpages are solved.
Owner:上海星地通讯工程研究所

Method for measuring converter transformer paper oil insulation partial discharge characteristic

ActiveCN102955108AReasonable Condition Maintenance StrategyIntuitive fault warningTesting dielectric strengthTransformerMaintenance strategy
The invention relates to a method for measuring a converter transformer paper oil insulation partial discharge characteristic, and belongs to the technical field of insulation detection of high-voltage electrical equipment. The converter transformer paper oil insulation partial discharge phenomenon belongs to a random process, in the method, based on the relation between the discharge capacity and the time interval in the discharge phenomenon, a series of relational graphs are built, and statistic characteristic parameters of partial discharge are extracted from the rational graphs, wherein the parameters include a degree of skewness Sk (representing the deviation degree of a spectrogram distribution curve relative to normal distribution), a kurtosis Ku (representing the sharpness of the spectrogram distribution curve relative to normal distribution), a Weibull distribution parameter scale parameter alpha and a shape parameter beta. Twenty characteristic parameters obtained by the method are used as the criterion for judging the types and order of severity of the converter transformer paper oil insulation partial discharge, according to the criterion, operators make a rational state maintenance strategy for the converter transformer, and a reliable technical support is provided for manufacturing and operating of the converter transformers.
Owner:TSINGHUA UNIV +2

Tire X-ray image detection and identification method and system

The invention discloses a tire X-ray image detection and identification method and system. The detection and identification method comprises an offline training step and an online detection step. The offline training step comprises: (11), establishing a training sample; (12), performing defect detection on an image in the training sample, and computing defect information of the training sample; (13), performing quantization coding on the defect information of the training sample to obtain a training sample feature vector; and (14), training the training sample feature vector and a grade judging result into a grade judging model. The online detection step comprises: (21), collecting a to-be-detected tire X-ray image in real time; (22), performing detect detection on the to-be-detected tire X-ray image, and computing all to-be-detected tire defect information; (23), performing quantization coding on all the to-be-detected tire defect information; and (24), computing the to-be-detected tire feature vector and the grade judging model. According to the detection and identification method, artificial subjective factors are avoided, the judgment is more objective and unified, and the judgment efficiency and accuracy are both improved.
Owner:MESNAC

Camera shielding detection method

The invention relates to the technical field of digital image processing, in particular to a camera shielding detection method. The camera shielding detection method includes the steps of 1, building a camera resource configuration module; 2, enabling a monitoring center to judge whether a camera is in operation or not according to operation state information, and to acquire a current-frame digital image from the camera in the operation state; 3, performing image preprocessing; 4, building an image brightness background, smoothing the image to a smooth brightness distribution diagram by an average filtering method, and extracting possibly shielded sectors Si of the image by a dynamic threshold method; 5, subjecting the possibly shielded sectors Si to connected component analysis, setting a sector threshold value ST, selecting the possibly shielded sectors Si not less than the sector threshold value ST, and defining the selected possibly shielded sectors Si as high-probability shielded sectors S2; 6, computing shielded probability P of the high-probability shielded sectors S2; 7, judging the relation between the shielded probability P and preset shielded probability PT, if P>PT, judging the high-probability shielded sectors as final shielded sectors, and if not, judging the high-probability shielded sectors as unshielded sectors. The camera shielding detection method is high in detection efficiency.
Owner:DALIAN JIAYUN ELECTRONICS TECH CO LTD

Ship navigation risk early warning method and device, terminal equipment and storage medium

The invention is suitable for the technical field of ship navigation safety monitoring. The invention provides a ship navigation risk early warning method and device, terminal equipment and a storagemedium. The method comprises the following steps of obtaining a first distance HS from a first preset measurement point at a bottom of a ship to a water bottom and a second distance Hh from a second preset measurement point at a top of the ship to an obstacle above the ship, then judging whether the first distance HS meets a first early warning condition or whether the second distance Hh meets a second early warning condition or not, generating a corresponding control instruction and danger early warning of a ship navigation risk according to a judgment result, and controlling the ship navigation according to the control instruction. According to the invention, various data such as water depth, draft, the first distance from the bottom of the ship to the water bottom and the like are acquired in real time, the data acquired in real time is calculated, whether the ship has the navigation risk or not is judged, the corresponding risk early warning is generated according to the type of the risk, the calculation amount of a ship driver is reduced, the stability and accuracy of an operation are ensured, and the judgment efficiency is improved.
Owner:珠海云航智能技术有限公司

Hardware-based conformance event determination method and device

ActiveCN103336683AImprove judgment efficiencyOvercoming the disadvantages of serial processingConcurrent instruction executionReal-time computingState of art
The embodiment of the invention discloses a hardware-based conformance event determination method and device. The method comprises the following steps of obtaining event information of an event to be processed, the event information comprising occurrence time, occurrence position and energy; according to the occurrence time, dividing the event information of the event to be processed into N data blocks, wherein N is a natural number; and respectively carrying out conformance event determination on the event information of the N data blocks in pre-established parallel processing channels. According to the method and the device provided by the invention, the original serial processing mechanism is adjusted to a parallel processing mechanism, and the conformance event determination is carried out by utilizing the parallel processing channels, so that the defects of serial processing in the prior art are overcome so as to ensure that the event information in each period of time can be processed, and the duration of conformance event determination is shortened, and thus the data on the entire time axis can not be stuck or lost. Compared with the prior art, the hardware-based conformance event determination method improves the determination efficiency of conformance events.
Owner:沈阳智核医疗科技有限公司

Temperature abnormal defect detecting and positioning method and system

PendingCN110942458AHigh efficiency in judging and locating abnormal temperature defectsReduce efficiencyImage enhancementRadiation pyrometryImage analysisTextual information
The invention relates to a temperature abnormal defect detection and positioning method and system. The system comprises an infrared thermal imaging temperature measurement module, a visible light imaging module, a parameter setting module, a result display module, an alarm module and an image analysis and positioning module. The method comprises the steps that S1, the relative positions of an infrared thermal imaging temperature measurement module and a visible light imaging module are fixed, and the mirror surfaces of the two modules are relatively parallel; the infrared thermal imaging temperature measurement module collects infrared thermal image data, and the visible light imaging module collects visible light image data; the data collected by the infrared thermal imaging temperaturemeasurement module and the visible light imaging module to an image analyzing and positioning module; s2, the image analyzing and positioning module receives the infrared thermogram data and the visible light image data, and obtains a temperature anomaly detection and positioning result through image analysis processing; and S3, the image and text information of the temperature anomaly detection positioning result are transmitted to a result display module for display, and a temperature anomaly detection signal is transmitted to an alarm module for alarming. According to the invention, the efficiency of temperature abnormal defect judgment and positioning can be improved.
Owner:SHANTOU UNIV

Character relationship extraction method oriented to headline

The invention relates to a character relationship extraction method oriented to a headline. The character relationship extraction method comprises the following steps: 1) looking for a relationship designator in the headline for distinguishing the character relationships of different categories; 2) according to the position characteristics of a character and the relationship designator in the headline, establishing a sentence pattern template used for describing a sentence, utilizing training data to carry out statistics on the positive / negative example number of each template, and judging the correctness of the relationship among characters in the headline according to the ratio of positive templates and negative templates; and 3) extracting characteristics from a knowledge base of headlines and character attributes, combining with the positive / negative example number, which is obtained in the S2), of the sentence pattern template to judge whether the given character relationship is correct or not through a characteristic classification method. The character relationship extraction method lowers characteristic dimension and improves judgment efficiency while accuracy is guaranteed. The character relationship extraction method can be used for mining the character relationship in the headline so as to find central figures, hot issues and the like in the society and is convenient in mastering society dynamic conditions and monitoring public sentiments.
Owner:INST OF INFORMATION ENG CHINESE ACAD OF SCI

Mechanical fault diagnosis method of high voltage breaker operation mechanism for electric power system

ActiveCN105606997AEffectively judge health statusReasonable Condition Maintenance StrategyCircuit interrupters testingElectric power systemMaintenance strategy
The invention relates to a mechanical fault diagnosis method of a high voltage breaker operation mechanism for an electric power system and belongs to the electrical equipment latent mechanical fault diagnosis technology field. Common latent mechanical faults such as opening refusal, closing refusal, an opening error and a closing error of the high voltage breaker operation mechanism can be reflected by the time and the amplitude of closing / opening coil currents of the operation mechanism. According to the method, present closing / opening coil current waveforms are quantitatively compared with factory closing / opening coil current waveforms, the quantification deviation D is taken as a criterion for determining the mechanical structure damage degree of the high voltage breaker operation mechanism, so fault early warning can be carried out visually, equipment safety is guaranteed, the method is convenient for an operator to make reasonable state maintenance strategies for the high voltage breaker operation mechanism, reliable technical supports are provided for manufacturing and operation of high voltage breakers, compared with an ocular estimation method employed in test fields presently, the method is advantaged in that scientific property, accuracy and determination efficiency are remarkably improved.
Owner:STATE GRID CORP OF CHINA +2
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