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State monitoring and failure diagnosis method for wind generating set variable pitch system

The invention discloses a state monitoring and failure diagnosis method for a wind generating set variable pitch system. The method includes the steps that 1, in data collection, operation parameters related with the operation state of the variable pitch system are extracted from a wind generating set SCADA system; 2, according to feature parameter extraction, a Relief algorithm is utilized for extracting effective feature parameters of the variable pitch system; 3, in data analysis and prediction, historical data during normal operation of the variable pitch system are screened out to establish a health model of a fan and calculate the prediction value of a real-time signal and the difference between an actual output value and the prediction value; 4, according to a diagnosis algorithm, the operation state of the fan is judged according to residual error information transmitted by the step 3, and the main failure reason of the variable pitch system is found according to a corresponding diagnosis rule and the contribution rate of residue errors; 5, according to data storage, real-time data, prediction data and the diagnosis result are stored to facilitate failure analysis at the later period and provided as reference data for modifying the failure diagnosis rule.
Owner:北京中恒博瑞数字电力科技有限公司

Remote sensing image classification method based on attention mechanism deep Contourlet network

The invention discloses a remote sensing image classification method based on an attention mechanism deep Contourlet network, and the method comprises the steps: building a remote sensing image library, and obtaining a training sample set and a test sample set; then, setting a Contourlet decomposition module, building a convolutional neural network model, grouping convolution layers in the model in pairs to form a convolution module, using an attention mechanism, and performing data enhancement on the merged feature map through a channel attention module; carrying out iterative training; performing global contrast normalization processing on the remote sensing images to be classified to obtain the average intensity of the whole remote sensing images, and then performing normalization to obtain the remote sensing images to be classified after normalization processing; and inputting the normalized unknown remote sensing image into the trained convolutional neural network model, and classifying the unknown remote sensing image to obtain a network output classification result. According to the method, a Contourlet decomposition method and a deep convolutional network method are combined, a channel attention mechanism is introduced, and the advantages of deep learning and Contourlet transformation can be brought into play at the same time.
Owner:XIDIAN UNIV

Method and system for remotely controlling television by using smart phone

The invention relates to a method for remotely controlling a television by using a smart phone, comprising the following steps: the television receives a screen capture request, captures the present display picture according to the screen capture request, obtains screen capture information and sends the screen capture information to the smart phone; the smart phone records an operation instruction which is sent by a user according to the screen capture information, calculates a relative position coordinate of the operation instruction on the screen capture information, and sends the operation instruction and the corresponding relative position coordinate to the television finally; and the television executes the operation instruction according to the operation instruction and the corresponding relative position coordinate. According to the method disclosed by the invention, a user can save the time of moving a cursor by using the traditional remote controller, and finds a corresponding operation position directly and accurately, especially in the situations when the user carries out network browsing or some complicated interface operations and the like by using the television, the desirously-operated target position can be faster and more accurately found out, and operations can be executed.
Owner:SHENZHEN TCL NEW-TECH CO LTD

Method for screening useful images from retrieved images

InactiveCN103778227AHigh purityMake up for the problem of negative samplesSpecial data processing applicationsDatabase imageVisual Word
The invention discloses a method for screening useful images from retrieved images, and is mainly used for solving the problem of low accuracy rate of the current image retrieving sequencing results. The method comprises the following main realization steps that (1) database image visual word bag characteristics and semantic attribute characteristics are extracted; (2) mapping dictionaries of the visual word bag characteristics and the semantic attribute characteristics are trained and learned in an off-line way; (3) the retrieval is carried out according to images to be searched given by users to obtain initial image sequencing lists; (4) the visual word semantic importance is analyzed according to the images to be searched given by the users; (5) the visual word context importance is analyzed according to the images to be searched given by the users; (6) by combining the visual word semantics and the context importance, the relevance score of images to be sequenced is calculated again, and the re-sequencing on initial results is completed, so the users can screen out useful relevant images. The method provided by the invention has the advantages that the final image retrieving accuracy rate can be obviously improved, and the method can be used for image retrieving.
Owner:XIDIAN UNIV

Method for monitoring compaction of concrete-filled steel tube structure based on piezoelectric intelligent aggregate

The invention discloses a method for monitoring the compaction of a concrete-filled steel tube structure based on a piezoelectric intelligent aggregate and a sending and receiving interactive approach, belonging to the field of monitoring the compaction status of the concrete-filled steel tube structure. The method comprises the following steps: embedding the piezoelectric intelligent aggregates in pairs in the concrete-filled steel tube structure in advance; excitating the intelligent aggregates through a signal generator; collecting the output signal of the piezoelectric intelligent aggregates corresponding to the inner part of a concrete-filled steel tube through a signal collection system; interchanging two intelligent aggregate functions; repeatedly excitating and signal receiving processes; carrying out analytical processing on the signals acquired at two times, so as to obtain the index of similarity level of the signals acquired at two times; and estimating the compaction status in the concrete-filled steel tube by utilizing the index. The method provided by the invention can be used for rapidly monitoring the compaction status of the concrete-filled steel tube, can be used for accurately finding out the damage position, and has high sensitivity and rapid response, and low price, and is simple in operation.
Owner:ANGANG CONSTR CONSORTIUM

Intelligent pairing method applied to online stowage of vehicles and goods

InactiveCN104866997AKnow the comprehensive loading situationFind quicklyLogisticsSpecial data processing applicationsSpatial methodsSpatial clustering
The invention discloses an intelligent pairing method applied to online stowage of vehicles and goods. Information of supply of goods and platform vehicles issued by a goods owner is fully considered based on a word segmentation spatial clustering method, and the information of supply of goods issued by the goods owner is subjected to word segmentation from multiple dimensions, a vehicle information clustering space is constructed, and online intelligent pairing of the supply of goods and vehicles is achieved by the floating space and fuzzy filtering; a plurality of attributes influencing vehicle selection are divided into sequential layers associated with one another based on a multi-attribute decision making model, thus being methodized, and the matched vehicles are optimally sorted according to vehicle transaction evaluation and mass data of the platform, so that the result can be more intuitively presented. According to the intelligent pairing method applied to online stowage of vehicles and goods, the intelligent optimization pairing problem of vehicles and goods in the electronic commerce platform taking logistics service as a transaction object is well processed by the accurate big data mining analysis and the complicated model algorithm, so that the platform members or other members can quickly and accurately find the best fit stowage vehicle from the numerous vehicles and make a selection according with own requirements.
Owner:NANJING UNIV

Vehicle-searching guide method and system based on network interconnection

The invention discloses a vehicle-searching guide method based on network interconnection, and the method comprises the following steps: receiving vehicle feature information and parking space information transmitted by a parking space detection device; building the mapping relation between a parking vehicle and a parking space according to the vehicle feature information and parking space information; receiving a vehicle searching request sent by a user terminal, wherein the vehicle searching request at least comprises the vehicle feature information; obtaining the parking space information corresponding to the vehicle feature information according to the mapping relation between the parking vehicle and the parking space; generating a vehicle-searching guide path which takes the current position of the user terminal as the start position and takes a position corresponding to the parking space information as the target position, and transmitting the vehicle-searching guide path to the user terminal. The invention also discloses a vehicle-searching guide system based on network interconnection. The method can complete the recording of the parking space without operation, and a user can use the user terminal which receives the vehicle-searching guide path to find the parking space of a vehicle accurately and quickly, thereby greatly saving the searching time of the vehicle for the user.
Owner:SHENZHEN TCL DIGITAL TECH CO LTD

Method and system for realizing automatic correlation of multiple enterprises and multiple contact lists based on cloud computation

The invention relates to a method and system for realizing automatic correlation of multiple enterprises and multiple contact lists based on cloud computation. The system comprises an enterprise contact list cloud management module, an enterprise internal contact list database, an enterprise client contact list database, an enterprise service contact list database, an enterprise client and service contact list correlation module, an enterprise contact list cloud service module and a plurality of converged communication client sides. According to the method and system, cloud computation, the mobile internet and the converged communication client sides are used for realizing the purpose of providing a contact list service for the enterprises, the enterprise contact list cloud management module is used for conducting classified management on contact lists of each enterprise, the enterprise client and service contact list correlation module is used for realizing the purpose of establishing correlation between contact lists of different enterprises, and the enterprise contact list cloud service module is used for providing a contact list service for all the converged communication client sides. When the contact lists of a certain enterprise change, the other related enterprises can found out the changes timely, and corresponding contact persons can be found quickly, accurately and conveniently.
Owner:北京思特奇信息技术股份有限公司

System and method for aligning silk-screen printing

The invention relates to the technical field of silk-screen printing equipment, particularly to a system and method for aligning silk-screen printing. A silk screen plate and a lifting table are arranged on a silk-screen printing machine, a fixture is arranged on the silk screen plate, an XYR micro-motion platform is arranged on the lifting table, a vacuum chuck is arranged on the XYR micro-motion platform, the vacuum chuck is used for adsorbing a printing stock, and the printing stock corresponds to a position under the silk screen plate; a first positioning mark is arranged on the silk screen plate, and a second corresponding positioning mark is arranged on the print stock; the fixture is used for regulating the height and the two-dimension plane coordinates, which are relative to those of the silk screen plate, of an imaging and amplifying camera, the XYR micro-motion platform is used for regulating the two-dimension plane coordinates of the print stock and rotating the print stock, the lifting table is used for regulating the height of the printing stock, the first positioning mark on the silk screen plate and the second corresponding positioning mark on the print stock are collected by the imaging and amplifying camera, and the position and the direction of the printing stock are regulated through the XYR micro-motion platform and the lifting table, so that the first positioning mark and the second positioning mark are accurately aligned, and the effect that a blanking region of the printing stock and a pattern on the silk screen plate are accurately aligned is achieved.
Owner:XIAMEN UNIV

Train platform precise display and cross-line voice alarm integrated management system for railway station

The invention particularly relates to a train platform precise display and cross-line voice alarm integrated management system for a railway station. The train platform precise display and cross-line voice alarm integrated management system comprises an information management platform and a compartment number display system which comprises a plurality of display screens, wherein the information management platform is used for analyzing read information, and carrying out information transmission on information to be displayed by the compartment number display system through a network. According to the train platform precise display and cross-line voice alarm integrated management system, compartment numbers are displayed by virtue of an LED (light-emitting diode) display screen; the display system adopts multi-surface display; slope angles between two side surfaces of the display system and the ground are 10-45 degrees and height of the display screens is not greater than 5 cm, so that passengers can be guaranteed to clearly see positions of 3-4 compartments to the greatest extent, the slope angles of the display screens are gentle, passing of pedestrians is not affected, and the problem that the passengers cannot find the positions of the compartments in a waiting process on the train platform, and get across the safe-guard line to possibly have an accident of falling into tacks is solved; the last-meter blind zone problem of safety management is firstly solved, and therefore, the train platform precise display and cross-line voice alarm integrated management system is worthy of being popularized.
Owner:SHANDONG BEIRENHUIZHI ENERGY DEV

Plant management system and method for garden and landscape engineering based on two-dimensional codes

The invention discloses a plant management system and method for garden and landscape engineering based on two-dimensional codes. The system comprises: nameplates which are provided with two-dimensional codes and are fixed on trees for identifying the trees; a big data platform which is provided with configuration software and is used for receiving, processing, storing and outputting tree information corresponding to the two-dimensional codes; multiple user sides which are provided with configuration software and two-dimensional code scanning function, and are used for reading tree information in the big data platform through different permissions and/or scanning two-dimensional codes, inputting tree information into the big data platform and downloading applications from the big data platform; and a network which is used for interactive communication between the big data platform and user sides. According to the system and the method, the two-dimensional code technology is combined with the big data platform technology which helps users obtain comprehensive information of trees so that the problem that display content is limited by the limitation of nameplate area is solved; and planter information is kept secret to prevent information leakage.
Owner:SUZHOU GREEN PLANT FULL STACK INFORMATION TECH CO LTD

Communication method, communication system, communication terminal and position service platform for receiving and handling alarms

The invention discloses a communication method, a communication system, a communication terminal and a position service platform for receiving and handling alarms. The communication method includes that S1, the alarm communication terminal receives a call request, corresponding communication connection is established, whether the call request is an alarm call or not is judged, and a step S2 is executed if the call request is the alarm call; S2, the alarm communication terminal generates alarm reporter current position information, the alarm reporter current position information is transmitted in a data communication mode, and voice communication signals are transmitted in a voice communication mode; S3, the police position service platform searches standby policemen in a police geographic information system, and the standby policemen are closest to an alarm reporter; S4, the police position service platform generates alarm situation description information according to the voice communication signals, and the alarm situation description information and the alarm reporter current position information are directly transmitted to the police communication terminal of the standby policemen closest to the alarm reporter; and S5, the police communication terminal performs navigation according to a navigation path. The communication method, the communication system, the communication terminal and the position service platform have the advantage that the policemen can quickly and accurately rush to the position of the alarm reporter to handle an alarm situation.
Owner:SHENZHEN SEG SCI NAVIGATIONS CO LTD
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