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13results about How to "Solve the low positioning accuracy" patented technology
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Quick-mounting union valve
ActiveCN224592880USolve the low positioning accuracySimplify the installation and removal process
The utility model discloses a kind of quick-mounting live joint valves, it is related to pipeline connection and control equipment technical field, including first docking pipeline, link chamber and second docking pipeline, the first docking pipeline is communicated with second docking pipeline, the link chamber is fixedly installed at the junction of first docking pipeline and second docking pipeline, the top of the link chamber is communicated with containing room, the utility model is connected by being set by third docking pipeline, first limit ring, second limit ring, link rod, boss, extension block, quick-mounting mechanism, without welding, hot melting or multiple bolt fastening, only by aligning limit convex strip, sleeve joint limit ring and rotating link rod can be completed fast connection, greatly simplify installation and disassembly process, reduce operation difficulty and labor cost, simultaneously adapt to various industry pipeline systems, solve the problem that traditional valve installation is complicated, disassembly damages pipeline and part quick-mounting valve positioning accuracy is low.
Owner:EMMONSTRONG FLUID SYST (SHANGHAI) CO LTD
Positioning method and device for marine seismic exploration towrope
ActiveCN119148229ASolve the low positioning accuracyImprove positioning accuracyWater resource assessmentSeismic signal processingClassical mechanicsPosition fixing
The invention discloses a positioning method and device for an offshore seismic exploration towing cable. The method comprises the steps that multiple sets of initial observation values of an offshore seismic exploration towing cable are acquired, and the initial observation values comprise a compass bird observation value and an acoustic distance observation value; respectively determining an initial observation value weight matrix corresponding to each group of initial observation values, a first error function corresponding to the compass bird observation value and a second error function corresponding to the acoustic distance observation value; constructing a normal equation through the initial observation value weight matrix corresponding to the initial observation value, the first error function and the second error function, and determining a residual vector corresponding to the initial observation value based on a solution corresponding to the normal equation; and adjusting the initial observation value weight matrix based on the residual vector to obtain target observation value weight matrixes, and determining the position of the marine seismic exploration towing cable based on at least one target observation value weight matrix. And the positioning accuracy of the marine seismic exploration towing cable is improved.
Owner:SHANGHAI BRANCH CHINA OILFIELD SERVICES
A submerged load distributed ultra-short baseline positioning system and positioning method
ActiveCN121763209BSolve the low positioning accuracyachieve observationPosition fixationAcoustic arrayClassical mechanics
The application belongs to the field of positioning, and particularly relates to a submerged load distributed ultra-short baseline positioning system and a positioning method. The application discloses a submerged load distributed ultra-short baseline positioning system and a robust positioning method thereof, which effectively overcomes the problem that the positioning results of a traditional ultra-short baseline positioning system are inconsistent under limited observation space and different array patterns. By arranging acoustic elements at multiple positions on the surface of a submarine, a distributed acoustic array is formed, and the observation space of the submarine is expanded. Meanwhile, a robust positioning method is proposed by introducing azimuth constraints, and the robustness of the acoustic positioning result to array changes is enhanced. Through the application, the observation of the acoustic array on the submerged load to a target in the whole space can be realized, and stable positioning accuracy can be maintained when part of the acoustic elements fail.
Owner:QINGDAO INNOVATION & DEV CENT OF HARBIN ENG UNIV
Indoor positioning enhancement method based on multi-terminal cooperation
PendingCN119562348ASolve the low positioning accuracyParticular environment based servicesPosition fixationGraph modelRadio frequency
The invention discloses an indoor positioning enhancement method based on multi-terminal cooperation, and the method comprises the steps: obtaining wireless radio frequency ranging signals among a plurality of terminals, removing an outlier in the wireless radio frequency ranging signals, and carrying out the denoising of the wireless radio frequency ranging signals after the outlier is removed; selecting mutual information, a square positioning error boundary and the number of nodes to establish a terminal optimization criterion, and performing cooperative positioning reference terminal optimization selection according to the terminal optimization criterion to obtain a final reference terminal optimization set; and based on the space-time constraint relationship in the multi-terminal system, establishing a probability graph model by using a probability graph method and solving the probability graph model to obtain the optimal position of the terminal to be positioned. According to the invention, the intelligent terminal with high positioning precision is used as a mobile base station, information measurement and data interaction are carried out through a wireless network, accurate positioning of the terminal to be positioned is realized, and the positioning precision of the terminal to be positioned in an indoor space is improved.
Owner:SHENZHEN UNIV
Positioning device for positioning a gong plate without pin
The utility model relates to positioning device technical field discloses a kind of positioning device of PIN-free positioning board, including workbench, the workbench top surface is provided with pneumatic cylinder, the utility model is rotated by motor driving transmission shaft and gear, make two groups of gear synchronous action on two groups of first rack and second rack, make two groups of first rack and second rack in first sliding slot and second sliding slot opposite direction sliding, and make first rack and second rack synchronous drive clamping plate in first guide slot and second guide slot sliding, to reach the purpose of printed circuit board workpiece fast clamping, again match CCD camera to the position of circuit board carries out electricity measurement, to improve the positioning accuracy of circuit board, while effectively solve the problem that only relying on visual identification or mechanical position is carried out in prior art, leading to low positioning accuracy.
Owner:HUIZHOU ZHONGJING ELECTRONICS TECH CO LTD
Up-down two-way press-fit guiding fine positioning mechanism
ActiveCN222449145USolve the low positioning accuracyHigh positioning accuracyMetal working apparatusStructural engineeringPower apparatus
Owner:SHANDONG GETTOP ACOUSTIC CO LTD
Positioning measurement method, electronic equipment and computer readable storage medium
PendingCN119402965AHigh positioning accuracySolve the low positioning accuracyWireless communicationTime domainSimulation
The invention provides a positioning measurement method, electronic equipment and a computer readable storage medium. The positioning measurement method comprises the following steps: a target device determines a first starting moment of sampling measurement; the first starting moment is sent to the target equipment by the network entity, or the first starting moment is determined by the target equipment based on capability information of the target equipment; the first starting moment is one item in the starting moment set; the starting moment set comprises a plurality of third starting moments, and the third starting moments are related to the reference moment or the first path; the target equipment executes sampling measurement based on the first starting moment to obtain a measurement result; the measurement result comprises power information corresponding to a target sampling moment in the target time domain window, or the measurement result comprises power information and phase information corresponding to the target sampling moment in the target time domain window; the starting moment of the target time domain window is a first starting moment; measurement results are used for life cycle management of the positioning model.
Owner:BAICELLS TECH CO LTD
Vacuum adsorption clamping device for self-focusing lens
ActiveCN224740359UEfficient and stable transferSolve the low positioning accuracy
This utility model relates to the technical field of optical component manufacturing equipment, and discloses a vacuum adsorption clamping device for a self-focusing lens. It includes a conveying assembly for transporting the self-focusing lens, a cross-shaped linear module at the top of the conveying assembly to assist in the transfer of the self-focusing lens, a slide table on one side of the cross-shaped linear module, and multiple adsorption components on one side of the slide table for vacuum adsorption of the self-focusing lens. The vacuum adsorption components enable non-destructive gripping of the self-focusing lens. Combined with the elastic positioning structure of the adjustment assembly, it solves the problem of low positioning accuracy associated with traditional suction cups. The push block and push spring work together to allow the device to adapt to lenses of different sizes, improving its versatility. The transfer structure driven by the cross-shaped linear module ensures efficient and stable transfer of the lens between processes, which is beneficial for improving production efficiency.
Owner:NANTONG RUIJING PHOTOELECTRIC TECH CO LTD
RFID-based target positioning and trajectory analysis method and system
PendingCN119623501ASolve the low positioning accuracySolve the problem of rapid increase in implementation costsCo-operative working arrangementsGeographical information databasesRadio frequencyService module
The invention provides an RFID-based target positioning and trajectory analysis method. The method specifically comprises the following steps: S1, constructing geographical coordinate information of a reader-writer; s2, constructing a mapping relation between the radio frequency power value sequence of the reader-writer and the spatial geographic information of the reading area; s3, continuously and dynamically adjusting the radio frequency power of the reader-writer according to a preset strategy, and identifying and reporting the label information carried by the target in the corresponding reading area in real time; s4, the background service module carries out union, intersection and complementation real-time calculation on the data in a certain moment interval, and position information of the target label at the corresponding moment is determined; and S5, performing time sequence calculation on the position information of the target in a certain time window by the background service module, and determining the track information of the target label in the corresponding time. According to the invention, high-precision target positioning and high-real-time trajectory analysis can be completed by using fewer RFID readers.
Owner:CHINA YOUKE COMM TECH
A tunnel disease positioning method, device, equipment and medium
PendingCN122866295Amake up for positioningmake up for errors
The method comprises: acquiring multi-source data collected by a positioning device at each position point in a tunnel; performing point cloud feature extraction based on point cloud data collected at each position point; obtaining an initial pose of the positioning device at each position point; taking the initial pose at each position point as a node to construct a graph structure to be optimized; optimizing the node pose in the graph structure to obtain a target pose corresponding to each position point after optimization; and determining global position information of the disease in the tunnel. The technical scheme of the embodiment of the present disclosure determines the global position information of the disease in the tunnel based on the multi-source data collected by the positioning device at each position point in the tunnel, fuses multi-element data for positioning, effectively makes up for the positioning drift and error problem of a single sensor in a closed environment of the tunnel, and achieves the effect of improving the overall precision and robustness of disease positioning.
Owner:SHENZHEN UNIV
Remote real-time monitoring system for rowboat racing training
PendingCN121819302AConvenient for dynamic understandingeasy to understandSport apparatusTablet computerData acquisition
The invention discloses a remote real-time monitoring system for racing boat training, and the system comprises an MCU processor, a data collection module, a data storage module, a data positioning module, a data transmission module, an alarm module, a display screen, and a cloud server. The data acquisition module and the data positioning module are in two-way communication with the MCU processor through the data transmission module, and the MCU processor is in two-way communication with the data storage module, the alarm module and the display screen; according to the invention, when a racing boat is carried out, field equipment does not need to be arranged in advance, and the current condition of the racing boat can be conveniently and dynamically known ashore by using a tablet computer or a computer as a training guidance basis; meanwhile, the position information is sent in real time, so that relatively intuitive watching experience can be provided; meanwhile, due to linkage of GPS and 4G, sub-meter positioning information is provided through RTK differential positioning, and the positions and real-time change conditions of all racing boats can be accurately displayed.
Owner:NANJING ORANGUTAN SOFTWARE TECH CO LTD
Visual positioning structure for penicillin bottle positioning
The utility model relates to the technical field of machine vision and automation control, in particular to a vision positioning structure for penicillin bottle positioning, which comprises a camera, a fixing shell, a fixing ring, an annular illuminating lamp, a fixing component and an adjusting mechanism, the fixing shell is in bolted connection with the camera and covers the outer side of the camera, the fixing ring is arranged on the outer side of the camera, and the annular illuminating lamp is arranged on the fixing component. The annular illuminating lamp is in bolted connection with the fixing ring and located below the fixing ring, the fixing assembly is arranged on one side of the fixing shell, and the adjusting mechanism is arranged below the fixing assembly. And the positioning precision is low.
Owner:PURE DESIGN TECH (HANGZHOU) CO LTD
Method and device for determining object position
ActiveCN114462440BSolve the low positioning accuracyImprove positioning accuracySensing by electromagnetic radiationPattern recognitionComputer graphics (images)
Owner:ZHEJIANG HUARAY TECH CO LTD