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52results about How to "Reduce yardage" patented technology

Method for accessing database by means of database storage layer used in instant communication system

The invention provides a method for accessing a database by means of a database storage layer used in an instant communication system. The database storage layer comprises an abstract interface module, a configuration analysis module, a structural body module and an application interface module. The method comprises the following steps of a, carrying out initialized configuration on the database storage layer by the configuration analysis module; b, receiving a request for operating the database sent by a service module from an upstream application, and analyzing and configuring the request by the application interface module; c, calling the structural body module for searching a structural body corresponding to the request from the structural body module; d, constructing the request into a request conforming to abstract interface specifications for operating the database by means of the abstract interface module based on the searched structural body and sending to the database for carrying out corresponding operation; and e, compositing operating results returned by the database by the application interface module, and then returning the composited operating results to the service module sending the request in the upstream application.
Owner:BEIJING 58 INFORMATION TECH

Grid-based contour line segment feature extraction algorithm

The invention relates to the technical field of mobile robots. More specifically, the present invention relates to a grid-based contour line segment feature extraction algorithm. The method comprisesthe steps: clustering data points, sorting the data points in each cluster, segmenting the data points in each cluster, performing line segment fitting on the data points in each data segment, takingthe first three items as the method for searching the line segment support area provided by the invention, and fitting line segments in the support area by using a least square method in combination with the method. According to the algorithm, when the line segment supporting area is searched, a large memory and long calculation time are not needed, and when the line segment is fitted, the fittingmethod is simple. According to the method, the performance requirement on the rotary laser scanner can be reduced, and the influence of noisy points on the extraction effect is reduced. Moreover, parameters such as thresholds do not need to be set, the performance requirement on the rotary laser scanner is reduced, the influence of noisy points on the extraction effect is reduced, and the extracted line segment is high in resolution, robustness, efficiency and real-time performance.
Owner:广州启明星机器人有限公司 +1

Correction code judging method of liquid crystal module

The invention discloses a correction code judging method of a liquid crystal module. The correction code judging method comprises the steps that (1) a liquid crystal module correction code initialization file corresponding to a current liquid crystal module production line is edited in a defect code folder of upper layer application software of an upper computer; (2) in a liquid crystal module defect grade determining interface, a corresponding liquid crystal module defect grade is selected by combining a detection result of a liquid crystal module to be displayed according to the existing 'liquid crystal module defect grade determining standard'; (3) in the liquid crystal module defect grade determining interface, the liquid crystal module correction code initialization file is analyzed, and multiple correction codes corresponding to the liquid crystal module defect grade are analyzed; (4) a user selects the correction code corresponding to the detection result of the liquid crystal module to be detected by combining the detection result of the liquid crystal module to be detected according to the existing 'liquid crystal module defect grade determining standard'. By means of the correction code judging method, the code quantity of an upper computer program can be reduced.
Owner:WUHAN JINGCE ELECTRONICS GRP CO LTD

Method for realizing power frequency anti-creeping and electric energy meter

ActiveCN110988780ADoes not affect the size of the spaceReduce yardageElectrical measurementsFast pulseControl theory
The embodiment of the invention discloses a method for realizing power frequency anti-creeping and an electric energy meter, and the method comprises the steps: recognizing the specification constantof the electric energy meter, and calculating the starting power and starting time of a metering chip according to the specification constant; reading current data, active power and pulse signal behaviors in the operation process of the electric energy meter; judging whether the current data is smaller than a current preset threshold value or not, and if the current data is smaller than the current preset threshold value, immediately resetting the value of a fast pulse counter in a metering chip; judging whether the active power is smaller than a preset power threshold value or not, and if theactive power is smaller than the preset power threshold value, immediately resetting the value of a fast pulse counter in a metering chip; and judging whether a pulse signal behavior exists within the anti-creeping time, and if no pulse is generated within the anti-creeping time, immediately resetting the value of a quick pulse counter in the metering chip. According to the embodiment of the invention, 0.5 mT power frequency anti-creeping can be carried out under the condition that no component is added.
Owner:GUANGXI POWER GRID CORP

Particle filter based multi-frame reference motion estimation method

The invention discloses a particle filter based multi-frame reference motion estimation method, belonging to the technical field of video compression coding. The method comprises the following steps of: searching blocks to be coded in adjacent reference frames by adopting a full search method, and selecting a plurality of points with lowest coding cost to form an initial particle set; updating the initial particle set to acquire a particle set of a next reference frame; calculating the weight of each particle in the particle set in the next reference frame, and acquiring optimal particles by estimation; performing re-sampling by using the weight of each particle, and updating the re-sampled particles to obtain a particle set of a next reference frame; circulating the weight calculation, estimation and update processes of the particles till a maximum reference frame is obtained, and coding the blocks to be coded by using the blocks corresponding to the searched particles with lowest coding cost; and traversing the image of the whole frame to complete the coding of the image of the whole frame. By adopting the particle filter method for estimating the multi-frame reference motion, the time of motion estimation is greatly reduced at the same time of ensuring the coding quality.
Owner:ZHEJIANG UNIV
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