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893results about How to "Avoid mismatch" patented technology

Map data updating system

A map data updating system is basically provided with a map distribution system and at least one map data updating device. The map distribution system includes a map data generating section and an information distributing section. The map data updating device is configured to process the distribution map data from the map distribution system, and includes a map data updating determining section and an update map data requesting section. The map data generating section configured to generate distribution map data including at least one target map data unit of a map that has been divided into a plurality of map units, with the distribution map data including map data version information for a target map unit to be updated and at least one perimeter map unit existing along a perimeter of the target map unit to be updated. The information distributing section configured to electronically distribute the distribution map data. The map data updating determining section configured to determine whether to update previously stored map data corresponding to the target map unit based on the map data version information included with the distribution map data. The update map data requesting section configured to send an update map data delivery request to the information distributing section when the map data updating determining section determines previously stored map data version information of the map data updating device relating to the at least one perimeter map unit does not match the map data version information included with the distribution map data.
Owner:NISSAN MOTOR CO LTD

Splicing method for measuring image data with large forgings assisted by lasers

The invention discloses a splicing method for measuring image data with large forgings assisted by lasers, and belongs to the field of image processing and computer vision detection. The method comprises the steps that two different laser devices are used for constructing feature points on a metal surface, and the image data can be spliced under complex working conditions; two sets of adjacent binocular cameras carry out image data rough matching through light spots projected by point laser devices, meanwhile, a conversion matrix is obtained, linear laser devices are used for projecting grids, the rough matching conversion matrix is adopted as an initial value, image data fine matching is carried out, and splicing is achieved after redundant data are removed. The three light spots of different sizes are adopted as feature points in image data rough matching, error matching is effectively avoided, and matching precision is improved. The conversion matrix obtained through rough matching is adopted as the initial value in fine matching, and the computation quantity of correcting the conversion matrix is reduced. In the splicing process, a measurement system is taken as a multi-binocular measurement system, the method has no precise requirement for the position of a target, and implementation is easy.
Owner:DALIAN UNIV OF TECH

Virtual assembly apparatus, system and method

The present invention belongs to the technical field of human-computer interaction during virtual assembly, and specifically, is a virtual assembly apparatus, system and method. The apparatus comprises a Kinect V2 human-computer interaction device, a Unity 3D virtual environment construction device, VR glasses and a force and touch feedback device. The Kinect V2 human-computer interaction device comprises Kinect V2; the Unity 3D virtual environment construction device comprises two cameras and a computer; the camera, the Kinect V2 human-computer interaction device and the force and touch feedback device are connected to the computer; the VR glasses are separately connected to the Kinect V2 human-computer interaction device and the computer. The present invention is a virtual assembly apparatus, system and method. The eyes of human are captured by using the Kinect V2 device, and the camera in the Unity 3D virtual environment is bond therewith, so that the user can view the virtual environment. Moreover, parts and the assembly environment are designed at an proprotion of 1:1, and the real position in the virtual environment is reversed by means of a bone recognition module, so as to realize synchronization between virtuality and reality and complete highly immersed virtual assembly.
Owner:JILIN UNIV

Combined navigation and positioning method of small underwater robot

The invention provides a combined navigation and positioning method of a small underwater robot, which comprises the following steps: fusing measurement data of various navigation facilities by means of a strong tracking unscented Kalman filter; using position vectors and heading angles under a navigation system as well as speed vectors and acceleration vectors under a vector system as state vectors of the filter; using the strong tracking unscented Kalman filter to implement autonomous navigation and data filtering of the underwater robot; based on horizontal position information output by a GPS (global positioning system) receiver, using the strong tracking unscented Kalman filter to implement autonomous correction and data filtering of the underwater robot; and implementing the switching between two different measurement equations (i.e. overwater and underwater measurement equations) based on the significance bit of the output signal of the GPS receiver. The invention can fuse the position, depth and attitude information of the small underwater robot measured by various navigation facilities, and can implement the autonomous navigation and autonomous correction of the small underwater robot under the interference of sea current or sea wave.
Owner:HARBIN ENG UNIV

Printing/processing system, printing device, processing device, printing/processing apparatus, method for controlling printing/processing system, program, and storage medium

A printing/processing system includes a printing mechanism performing a printing operation on a processing sheet; a processing mechanism performing a processing operation on the printed processing sheet; and a memory device into which the printing mechanism writes information and from which the processing mechanism reads information. The printing mechanism includes an input unit for inputting printing information for performing the printing operation and processing information for allowing the processing mechanism to execute the processing operation; an information-writing unit that writes process data into the memory device in correspondence with process-specifying data provided for specifying the process data, the process data being a control program and/or control data based on the input processing information; and a printing unit that prints print data and the process-specifying data on the processing sheet, the print data corresponding to the input printing information. The processing mechanism includes a reading unit that reads the process-specifying data printed on the processing sheet; an information-readout unit that refers to the memory device and reads out the process data corresponding to the read process-specifying data from the memory device; and a processing unit that performs the processing operation based on the read process data.
Owner:SEIKO EPSON CORP

Management system and method for automobile spare part electronic merchant transaction

The invention discloses a management system and method for automobile spare part electronic merchant transaction. The system comprises a spare part transaction platform, a merchant terminal, and a user terminal. The spare part transaction platform carries out association and matching on a spare part manufacturer, a spare part brand, a spare part type, and basic spare part information and carries out monitoring and statistics on the whole transaction process; a merchant sets basic spare part information by the merchant terminal, manages preselling, commodity arrangement for selling, and commodity removing of spare parts, carries out checking and statistics on transaction information; a consumer uses the user terminal to check and screen out spare part information, spare part merchant information and price information and selects a proper spare part for ordering. According to the invention, a special-purpose automobile spare part platform is established and a management method of the platform is provided; and owner-member and association relations between spare parts are established and a direct correspondence relation with vehicles is also established. Therefore, great convenience and diversity are provided for consumers to select spare parts and a platform is provided for a spare part dealer to sell spare parts.
Owner:CHENGDU TAIXIANG NETWORK SCI & TECH CO LTD

Logistics cargo volume non-contact measurement method based on binocular stereo vision and point laser range finding

InactiveCN106767399ANarrow searchSolve the reduction problem, solve the problem of uniquenessUsing optical meansMeasurement pointBinocular stereo
The invention provides a logistics cargo volume non-contact measurement method based on a computer binocular stereo vision technology and a point laser range finding technology. According to the method, a point laser range finding supplementary means is introduced; a point laser rangefinder is used to acquire the correspondence among the depth of a measurement point on a cargo object, the distance from an initial point and the point coordinate on an image; the incidence relationship between geometric projections of images shot by left and right cameras is established; the geometric projection correlation area of corresponding feature points in left and right images is positioned and set; image stereo matching of left and right image feature points is carried out in the set geometric projection correlation area of the corresponding feature points; and full width feature point extraction is carried out on the left image, which greatly reduces the range of image matching search and the calculation cost. According to the invention, the problem of the uniqueness of the solution of a spatial point reduction problem is solved; the problems of mis-matching and leakage matching in the image matching process are avoided; and the validity and the accuracy of image stereo matching are greatly improved; and the accuracy and the speed of the measurement of a binocular stereo vision system are improved.
Owner:DALIAN UNIV OF TECH

Direction of arrival estimation method based on co-prime array virtual domain equivalent signal atom norm expression

The invention discloses a direction of arrival estimation method based on co-prime array virtual domain equivalent signal atom norm expression. A problem of definition mismatch between a conventional atom norm definition and a co-prime array virtual domain equivalent signal model is solved. The direction of arrival estimation method comprises steps that a receiving end adopts a co-prime array to receive a signal, and modeling is carried out; an equivalent virtual signal corresponding to a co-prime array receiving signal is deduced; a theoretical model of a co-prime array virtual domain second-order equivalent multi-sampling fast beating signal is formed; the atom norm definition of the co-prime array virtual domain equivalent signal is acquired; an optimization problem based on the co-prime array virtual domain equivalent signal atom norm expression is set to re-establish a virtual domain covariance matrix; according to the re-established virtual domain covariance matrix, the direction of arrival estimation is carried out. The direction of arrival estimation method based on the co-prime array virtual domain equivalent signal atom norm expression is advantageous in that improvement of freedom degree performance is guaranteed, and at the same time, the non-meshing direction of arrival estimation is realized, and the method is used for passive detection and target positioning.
Owner:ZHEJIANG UNIV

Hydropower station automatic generation active output control method

ActiveCN105914795AImprove solution efficiencyMeet the needs of automatic active power output controlSingle network parallel feeding arrangementsMulti unitPower station
The invention discloses a hydropower station automatic generation active output control system and a hydropower station automatic generation active output control method. The hydropower station automatic generation active output control system comprises an AGC functional block, a PID functional block and a preprocessing functional block, wherein equipment parameters and dynamic parameters are directly input to, or sent to the AGC functional block and the PID functional block for updating after being processed by the preprocessing functional block. The hydropower station automatic generation active output control method can calculate a single-unit active setting value of each generator unit according to a whole station active target value of a hydropower station, performs PID closed-loop adjustment on a single-unit active actually generated value, and meets the operation requirements of a generator unit avoiding a vibration region and hydropower station primary frequency modulation; the hydropower station automatic generation active output control method adopts the method of pre-establishing a combined output model of input AGC units, converts data existing in a unit form into data in a station form, increases solution efficiency, and can meet requirements for automatic active output control of different multi-vibration-region and multi-unit type large and medium-sized hydropower stations.
Owner:HUANENG LANCANG RIVER HYDROPOWER

Adaptive intelligent integration detection method of radar range extension target

The invention discloses an adaptive intelligent integration detection method of a radar range extension target and belongs to the radar signal processing field. The adaptive intelligent integration detection method of the radar range extension target aims at overcoming the defects that the existing range extension target statistical detection method is poor in adaptive capability to the clutter and target environment and the like under the condition of the unknown clutter background. According to the adaptive intelligent integration detection method of the radar range extension target, normalized processing is performed on a radar echo one-dimensional range profile, integration optimization is performed through data domain description characteristics of a clutter one-dimensional range profile, a detection method of the constant false alarm rate of a one-class support vector machine is established, a kernel function parameter is adjusted to ensure constant false alarm rate characteristics of the detection method, and a clutter database is updated according to a detection result; statistical modeling does not need to be performed on the clutter background; the detection method is suitable for the positive and negative sample quantity seriously asymmetrical radar target detection environment; the false alarm control capability is strong, the computation is less, the engineering implementation is convenient, and the popularization and application value is high.
Owner:NAVAL AERONAUTICAL UNIV
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