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94results about How to "Clear handling" patented technology

SIFT parallelization system and method based on recursion Gaussian filtering on CUDA platform

Provided are an STFT parallelization system and method based on recursion Gaussian filtering on a CUDA platform. The method comprises the steps that first, original images are transmitted to a GPU end for conducting a series of Gaussian filtering and downsampling to establish a Gaussian pyramid, Gaussian filtering is conducted through a recursion Gaussian filter, and then substraction is conducted on the adjacent images to obtain a Gaussian difference pyramid; second, a thread block is used as a unit to load in an image, each thread is used for processing one pixel, and the pixel is compared with the adjacent 26 pixels to obtain local extreme points; third, each thread is used for processing one local extreme point, and positioning and selecting of key points are conducted; fourth, one thread block is used for calculating the direction of one key point, one thread is used for calculating the direction and the amplitude value of one pixel in the neighbourhood of the key point, the direction and the amplitude valve are accumulated to a gradient histogram through an atomic addition provided by a CUDA, and the information such as the coordinates and the directions of the key points are transmitted to a host end according to the directions of the key points obtained by the gradient histogram; fifth, one thread block is used for calculating one key point descriptor, then a calculating result is transmitted to the host end, and SIFT feature extraction is achieved. The STFT parallelization system and method based on the recursion Gaussian filtering on the CUDA platform improve the calculating speed of an SIFT algorithm.
Owner:北京航空航天大学深圳研究院

Multi-physical fused fire monitoring system and method thereof for predicting fire probability of occurrence

The invention discloses a multi-physical fused fire monitoring system and method thereof for predicting fire probability of occurrence. The monitoring system comprises a point type smoke sensing detector, a point type temperature sensing detector, a line type beam smoke sensing detector, an air-breathing smoke sensing fire detector, a cable line type temperature sensing detector, a cable multi-point type temperature detector, an in-place module, a first station layer switch and a cable fire monitoring early-warning system server. The method comprises the following steps: step one, orderly performing initialization, denoising and normalization on sensor data; step two, initializing a feature layer, selecting a random input weight beta and an output target T to form an input matrix H; step three, processing the feature layer data in batch, performing weight iteration after the initialization; step four, making the final judgment through an algorithm; and step five, judging that the fireoccurs and giving an alarm if a fusion result is greater than a set threshold, or repeating the steps 1-4. Through the system and method disclosed by the invention, the false alarm and the failed alarm of the fire can be effectively reduced, and the accuracy of the fire prediction can be greatly improved.
Owner:应急管理部四川消防研究所

Equipment resource information acquisition method

The invention provides an equipment resource information acquisition method. A timer periodically starts the acquisition process; an acquisition task table is scanned, acquisition tasks are filtered according to the acquisition cycle in the acquisition task table, and task list cache to be performed is generated; existence of the acquisition tasks in the task list cache is viewed; the equipment model numbers of the taken-out acquisition tasks are read, model number acquisition configuration cache is searched through the hash according to the equipment model numbers of the acquisition tasks and corresponding acquisition function configuration is obtained, and then function binding is performed so that a complete acquisition process stack is generated; a new acquisition thread is created; and the next acquisition task is continued. According to the equipment resource information acquisition method, the acquisition process is generated by adopting a method of packaging and dynamic binding so that a large number of model numbers are enabled to be clear in processing and better in stability; the acquisition process is configurable, organization is flexible and extension is convenient; and equipment access information is configured in XML in a centralized way to replace the mode of joint configuration of multiple fields as for task configuration.
Owner:BEIJING ENOVELL TECH

A method and system for numerically calculating the maximum efficiency of a counterattack runner

The invention discloses a method and a system for numerically calculating the maximum efficiency of a counterattack runner. The method comprises the following steps: data input; Coordinate transformation; Construction of the formation line of the cross-section through water; Axial velocity calculation; Calculation of axial streamline; S1, S2 stream surface construction; Spatial relative streamlineconstruction and segmentation; Calculation of space relative flow angle; Calculation of Axial Plane Velocity of Points on Spatial Relative Streamline; Calculation of blade extrusion coefficient 1/k;Euler energy numerical solution; Maximum efficiency numerical solution; CFD numerical simulation results validation; Judgment accuracy; The calculation results being input into Excel form for displayand storage and Ending the calculation. The system is used for realizing corresponding functions. The numerical calculation method and the corresponding system improve the simplification and rapidityof the calculation process. With the idea of modular design, each sub-module can run independently and be closely related to each other, and the calculation process is clear. is the method and systemare suitable for impeller rotating machinery working in incompressible fluid, and has a wide range of applications, involving in many industrial fields.
Owner:HOHAI UNIV

RAID (Redundant Array of Independent Disks) reconstruction method and system and RAID

The invention discloses an RAID (Redundant Array of Independent Disks) reconstruction method which comprises the steps that: when an RAID triggers reconstruction, an RAID main thread creates three threads, wherein three threads all include strip queues; and three threads sequentially execute thread operations in parallel according to sequences of strips in the corresponding strip queues, and when each strip queue does not include the strip, RAID reconstruction is completed, wherein a first thread mainly takes charge of carrying out a read operation, a second thread mainly takes charge of sequentially carrying out exclusive or operation processing on the strips according to the sequences of the strips in the strip queues, and a third thread mainly takes charge of sequentially issuing data in the strips into a hot standby magnetic disk according to the sequences of the strips. The RAID reconstruction work is executed in parallel in a production line mode, rather than an RAID is reconstructed by using a single reconstruction thread, so that parallelism of a CPU is sufficiently played, a speed of reconstructing the RAID is improved, and reconstruction time is greatly shortened. The invention further discloses an RAID reconstruction system and an RAID, which have the above-mentioned effects.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Two-dimensional comb filter and luminance and chrominance separation method

The embodiment of the invention discloses a two-dimensional comb filter and a luminance and chrominance separation method, which are used for accurately separating luminance and chrominance from a composite video signal. The two-dimensional comb filter in the embodiment of the invention comprises a direction relevance detection unit, vertical and horizontal comb filters, an arbitrament unit, a selector and a computing unit, wherein the direction relevance detection unit is used for detecting the similarity of the luminance and chrominance of pixel points in vertical and horizontal directions of the input composite video signal and outputting the detection result to the arbitrament unit; the vertical and horizontal comb filters are used for performing comb filtration on the input composite video signal in the vertical and horizontal directions and outputting the processing result to the selector; the arbitrament unit is used for judging the processing result of the vertical comb filter or the horizontal comb filter according to the detection result of the direction relevance detection unit and outputting the judgment result to the selector; and the selector and the computing unit are used for performing luminance and chrominance separation. The invention also provides the luminance and chrominance separation method corresponding to the two-dimensional comb filter.
Owner:上海顺久电子科技有限公司

Follow-up shooting method for on-site checking work

The invention belongs to the technical field of mobile office management. The invention relates to a convenient shooting method for on-site checking work. A system main body composition structure forrealizing the process is divided into two parts according to functions, namely a hardware device and convenient shooting software; the technological operation process comprises the steps of installation and binding, information reporting, message reminding, information processing, information response, shelving and approval, shelving and classification, processing and acceptance inspection, rectification and suggestion, approval authentication and report analysis. Mobile office of factory checking work is achieved through the follow-up shooting system, the execution efficiency of the checkingwork is improved, the checking record traceability function and the checking condition report analysis function are achieved, and the factory checking record traceability and analysis blank is filledup. The process method is scientific and reasonable, advanced in equipment and system, simple in operation process, rich in checking content, clear in checking information processing, convenient for production management and friendly in application environment.
Owner:青岛奥利普奇智智能工业技术有限公司

Water body floating algae treatment device and treatment method

The invention discloses a water body floating alga treatment device and treatment method. The device comprises a cabin, wherein the cabin is in a shape of a groove bucket, front and rear side walls ofthe cabin in the shape of the groove bucket are connected with floats respectively, an upper edge of a left end wall of the cabin is connected with a scraper blade in a horizontal direction, a frontedge of the scraper blade extends out of the left end wall of the cabin, and is in lap joint with a conveying device, a crushing device is arranged in a position, close to the left end wall, in the cabin, a drainage device is arranged in a position, close to a right end wall, in the cabin, the drainage device is communicated with a shore through a pipeline, and the conveying device, the crushing device and the drainage device are electrically connected with a control device located on the shore separately. By means of the water body floating alga treatment device and treatment method, continuous clearing of algae, especially cyanobacteria, in a water body is achieved, not only professionalization but also automation is greatly improved, and beneficial exploration is conducted for control work of floating algae which happens to inland water bodies and even red tide and the like which happen to sea water, so that the water body floating alga treatment device and treatment method have large application fields and prospects.
Owner:WATER RESOURCES RES INST OF SHANDONG PROVINCE

Refrigeration house temperature change-based frozen article quality analysis method and device

The invention provides a refrigeration house temperature change-based frozen article quality analysis method and device. The method comprises the steps of: obtaining refrigeration house use data and refrigeration house frozen article information after the temperature change of the refrigeration house, obtaining unfreezing data corresponding to the frozen article in the refrigeration house according to the frozen article information in the refrigeration house, and analyzing the quality of the frozen article in the refrigeration house according to the unfreezing data and the refrigeration houseuse data to obtain a quality analysis result of the corresponding frozen article in the refrigeration house. According to the refrigeration house temperature change-based frozen article quality analysis method and device, through the unfreezing data of frozen articles in the refrigeration house and refrigeration house use data after the temperature of the refrigeration house is changed, analyzingis carried out to obtain a quality analysis result of the frozen article in the refrigeration house, which is used for determining the influence degree of the frozen article in the refrigeration house, so that a worker can clearly determine a treatment mode of the frozen article in the refrigeration house and avoid straw rate and tiger treatment on the frozen article in the refrigeration house.
Owner:MIAOZHEN INFORMATION TECH CO LTD

Virtual thickness-based counterattack runner global characteristic numerical calculation method and system

The invention discloses a virtual thickness-based counterattack runner global characteristic numerical calculation method and system. The method comprises the following steps of inputting the data; carrying out coordinate transformation; constructing a water passing section forming line; calculating the axial surface speed; calculating an axial surface streamline; constructing the flow surfaces S1and S2; constructing and segmenting a spatial relative streamline; calculating a spatial relative water flow angle; calculating the axial surface speed of each point on the spatial relative streamline; trial-calculating a thickening coefficient; calculating a virtual thickness blade displacement coefficient; carrying out euler energy numerical solution; carrying out efficiency numerical solution;verifying a CFD numerical simulation result; judging the precision; performing thickening coefficient interpolation; inputting the calculation result into an Excel table to be displayed and stored; and ending the calculation. The system is used for realizing the corresponding functions. According to the numerical calculation method and the corresponding system, the simplification and the high efficiency of the calculation process are improved, by adopting a modular design thought, all the sub-modules can operate independently and are closely connected with one another, and the calculation process is clear. The method and the system are suitable for the impact type impeller rotating machine working in the uncompressed fluid, have the wide application objects and relate to the field of numerous industries.
Owner:HOHAI UNIV
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