637results about How to "Shorten positioning time" patented technology

A charged particle optical system comprising a beamlet generator for generating a plurality of beamlets of charged particles and an electrostatic deflector for deflecting the beamlets. The electrostatic deflector comprises first and second electrodes adapted for connection to a voltage for generating an electric field between the electrodes for deflection of the beamlets, the electrodes being at least partially freestanding in an active area of the electrostatic deflector. The electrodes define at least one passing window for passage of at least a portion of the beamlets between the electrodes, the passing window having a length in a first direction and a width in a transverse direction. The system is adapted to arrange the beamlets in at least one row and to direct a single row of the beamlets through the passing window of the electrostatic deflector, the beamlets of the row extending in the first direction. A substantial part of the electrostatic deflector extends beyond the passing window in the first direction.

The invention is intended to shorten a positioning time required for forming an irradiation area with high accuracy using a number of leaf plates, and to reduce physical and mental burdens imposed on patients. A multi-leaf collimator comprises leaf plate driving body each including a plurality of movable leaf plates and provided respectively on one side and the other side, the plurality of leaf plates of the leaf plate driver on one side and the plurality of leaf plates of the leaf plate driver on the other side being disposed in an opposing relation to form an irradiation field of a radiation beam between the opposing leaf plates. Each of the leaf plate driving body includes a motor provided in common to the plurality of leaf plates. Driving force of the motor can be transmitted to the plurality of leaf plates at the same time through a pinion gear, upper and lower air cylinders, and upper and lower guides. Also, the driving force can be cut off selectively for each leaf plate.

The invention provides an automatic processing machine for a bearing inner ring screw hole. The automatic processing machine comprises an engine base and a turntable, wherein the turntable can rotate in an indexing intermittent mode under the action of a power transmission device; the periphery of the turntable is uniformly provided with clamps for clamping workpieces; drilling devices, tapping devices, hole detection devices, burr filing devices and feeding and discharging mechanical arms are arranged around the turntable; all the devices are corresponding to positions where the clamps on the turntable stay; the hole detection devices are arranged on the downstream sides of the drilling devices and tapping devices; the burr filing devices operate after the completion of screw hole detection; the feeding and discharging mechanical arms are respectively linked with a feeding device and a discharging device. By adopting the automatic processing machine, feeding, drilling, tapping, burr removing, and discharging can be automatically realized, and only one operator is needed for carrying out management and monitoring; the labor intensity is greatly reduced, the production efficiency is high, the processing cost is low, and the product quality is stable.

A computerized 3D locating device and method for X ray and target object is characterized by that the X-Y planar image generated by using X ray to radiate the target object (such as calculus) in human body and the 3D position data from position sensor and mathematically analyzed by computer and the calculated result can control the electric driver to move for automatically coinciding said target object with the focus point of therapeutic equipment. Its advantages are high speed, and less damage of X ray to people.

The invention discloses an automatic assembling system for vehicle windshield glass. The automatic assembling system comprises a robot control cabinet, a robot module, a robot hand-gripping module, a vision detection module, a glass centering module and a detected vehicle window frame. The invention also discloses an automatic assembling method for the vehicle windshield glass. The method comprises the following processes of: positioning the windshield glass; detecting the spatial position of the vehicle window frame to obtain a coordinate system (O-xyz) of the spatial position of the vehicle window frame; comparing the coordinate system of the spatial position of the vehicle window frame with the coordinate system of the spatial position of the vehicle window frame at a reference position; computing deviation between the coordinate system of the spatial position of the vehicle window frame and the coordinate system of the spatial position of the vehicle window frame at the reference position; gripping the positioned windshield glass; moving the windshield glass to an installation position according to a standard moving trajectory; and performing deviation compensation on the installation position, and then installing the windshield glass on the vehicle window frame. The assembling system and the assembling method are based on machine vision, manual intervention is completely avoided, and the automation level of assembling of the vehicle windshield glass is improved.

A positioning control device includes a GPS hardware control unit that makes GPS determine a current location at different positioning accuracies, and a positioning request management unit that makes the GPS hardware control unit carry out positioning in response to a positioning request from an application according to a positioning accuracy specified in the positioning request, acquires the positioning result, and returns the acquired positioning result to the application of the request origin. In a case where a positioning accuracy of a new positioning request is equal to or less than a positioning accuracy of a latest positioning result, the positioning request management unit reuses the latest positioning result and returns the latest positioning result in response to the new positioning request.

The invention provides a wafer pre-alignment method, which comprises the following steps of: calculating shape center position coordinates of a wafer, radial displacement maximum offset emax and an included angle of a radial displacement maximum offset part and horizontal Y direction by using a high-accuracy laser transmitting sensor according to one-circumference data of the edge of the wafer; driving the wafer to rotate at an angle so as to position the radial displacement maximum offset emax and the horizontal Y direction on a straight line, thereby finishing shape center positioning of the wafer; and accurately positioning a notch of the wafer according to a shape center algorithm. According to the wafer pre-alignment method, the edge of the wafer is detected by using a light transmitting sensor, and the positions of a shape center and the notch of the wafer are determined by using the shape center algorithm, so that the accuracy of the positioning method is effectively improved, the time and the space occupied by a pre-alignment are reduced, and the cost is reduced.

The invention provides a micro-earthquake focus rapid positioning method based on an arrival time difference database, and belongs to the earthquake focus positioning technology field. The micro-earthquake focus rapid positioning method comprises the steps that a geological numerical model of a monitoring area is established, and mesh division is carried out, and every mesh point is adopted as a characteristic earthquake focus point; by combining with the characteristic earthquake focus point, a sensor position coordinate, and an earthquake focus wave speed, a characteristic earthquake focus point arrival time difference database is established; by using a waveform information acquisition system, the time of the earthquake source waves arriving at different sensors is extracted from waveform signals received from the sensors; the arrival time difference between any two sensors is calculated, and the arrival time difference matrix of the earthquake focus is established, and the matching searching of the arrival time difference matrix and the characteristic earthquake focus point arrival time difference database is carried out to realize the real-time rapid positioning of the earthquake focus. During an actual micro-earthquake monitoring project, the characteristic earthquake focus point arrival time difference database is established in advance, and the function optimization iteration solution of the earthquake focus is not required, and therefore time required by the earthquake focus positioning is greatly reduced, and rock mass engineering dynamic disaster early warning time is effectively reduced.

The invention discloses a wafer angular deviation automatic method based on vision. The wafer angular deviation automatic method based on vision comprises the following steps: arranging a wafer on an absorptive disk of a four-axis numerical control machine tool platform system; adopting Hough changing to conduct detecting and positioning on images of the wafer shoot by a microcamera of the four-axis numerical control machine tool platform system; shooting an image on an A point of the wafer to determine positions of a feature straight line and a feature point of the wafer, and adjusting positions of the wafer according to an angle formed by the feature straight line and X- axis or Y-axis of the four-axis numerical control machine tool platform system; respectively shooting images on a B point of the wafer and a C point of the wafer again to conduct Hough change detection, checking whether the wafer is accurately positioned by judging whether an incline angle beta of midpoint connecting lines of feature straight lines of the B point of the wafer and the C point of the wafer is zero. The wafer angular deviation automatic method based on vision can accurately positions of the wafer and scribe lines, is high in reliability and rapid in reaction rate, promotes automation and intellectualization of wafer scribing technology, can control valid accuracy to 2 mu, shortens positioning time of the wafer, and improves machining efficiency of the wafer.

The invention discloses a CT or PET-CT system and a positioning method for conducting scanning through the CT or PET-CT system. The CT or PET-CT system comprises an imaging device and a picture processing device. A patient can not suffer X-ray radiation when positioning is conducted through the CT or PET-CT system, and potential health hazards of the patient are reduced. In addition, in a positioning method for conducting scanning through an existing CT or PET-CT system, an examining table is usually required to move for a quite long time, the examining table scans the patient in the moving process to obtain locating plates, and subsequent examining can be further scheduled only according to the locating plates, and the positioning method mainly includes the steps of obtaining scanning a starting position parameter of the examining table and a scanning stopping position parameter of the examining table. However, by means of the positioning method for conducting scanning through the existing CT or PET-CT system, positioning time is too long. The examining table is kept still when positioning is conducted through the CT or PET-CT system, the scanning starting position of the examining table and the scanning stopping position of the examining table can be known by taking pictures, measuring the electronic pictures and conducting calculation, and positioning time is shortened.

The invention relates to a biopsy puncture auxiliary locator. The biopsy puncture auxiliary locator is characterized by comprising base plates which are matched with each other, a fixing plate, a locating pin reference plate, a rotating arm, a rotating sliding block, a sliding block gland and a guide pipe. The locating pin reference plate is arranged on the fixing plate, the base plates are magnetically connected to the locating pin reference plate, the rotating arm can rotate around the base plates, and the guide pipe is matched with the rotating sliding block and the sliding block gland and arranged on the rotating arm in a sliding mode. According to the biopsy puncture auxiliary locator, a doctor can perform a puncture operation fast and accurately, accuracy and stability are high, CT scanning is not needed again even if the body position of a patient moves inadvertently after location is finished, the locating position can be recovered just by overlapping an infrared reference line on the biopsy puncture auxiliary locator and CT infrared rays, repeated CT scanning and progressive needle insertion of a traditional puncture operation are avoided, operation safety is improved, operation time is shortened, radiation exposure caused by repeated roentgenoscopy is reduced, and tissue trauma and complications are reduced.

A method for controlling a video camera positioning system includes the steps of controlling a motor for driving a video camera to capture a panoramic frame, dividing the panoramic frame into a plurality of frames, controlling the motor for driving the camera lens to turn to the frame corresponding to an encoded command signal when the microcontroller receiving the encoded command signal, and zooming in the frame by the video camera. Furthermore, a video camera positioning system is also disclosed herein.

The invention relates to a satellite navigation positioning system, in particular to a Beidou satellite GPS dual-mode cloud differential positioning method and system. The Beidou satellite GPS dual-mode cloud differential positioning method comprises the following steps: each datum cloud end provides datum data for a system control center, wherein the datum cloud end is carried with a Beidou satellite GPS dual-mode receiver according with the location precision requirement; the system control center preprocesses the received datum data; when the positioning precision is insufficient, a common cloud end sends a differential positioning request to the system control center, wherein the common cloud end is carried with a single-mode single-frequency receiver or is not carried with a Beidou satellite GPS dual-mode receiver which does not accord with the positioning precision requirement; the system control center selects reasonable differential data and sends the reasonable differential data to the common cloud end; and the common cloud end carries out positioning according to the received differential data. The invention is applied to satellite navigation positioning.

The invention discloses a data importing method and a data importing system for a distributed sequence list. The method comprises the following steps: S1, converting a to-be-imported data into key value pairs by using a Map function; S2, sequencing the key value pairs according to keys; S3, fragmenting the sequenced key value pairs and respectively distributing each fragment to a Reduce function; S4, performing format conversion on respective distributed fragment by each Reduce function, converting the fragment into a format required by a bottom data storage file of the distributed sequence list and writing the fragment subjected to format conversion into the bottom data storage file; and S5, loading the bottom data storage file into the distributed sequence list. According to the invention, the to-be-imported data is directly written into the bottom data storage file of the distributed sequence list, so that the fragment positioning time is saved and the importing speed is accelerated.

The invention discloses a license plate locating method and system. The method comprises the steps of obtaining vehicle images; constructing an image pyramid through the vehicle images, wherein the image pyramid comprises multiple layers of images; when it is detected that the vehicle images comprise the license plate area through the image pyramid, carrying out recognition processing on license plate characters in the license plate area and determining the license plate area with the character recognition processing result meeting the preset condition; obtaining first position information of the license plate area image corresponding to the determined license plate area; extracting the positions of the license plate area at the current frame and the previous frame from multiple continuous frame images corresponding to the vehicle images, carrying out tracking processing on the information of the positions of the license plate area at the current frame and the previous frame, and regarding the information as second position information of the license plate area image when the tracking processing result meets the preset condition; integrating the first position information and the second position information to complete license plate location.

The invention discloses a method for reducing power consumption of a GPS (Global Positioning System). The method comprises the following steps of obtaining information of a related cell base station by the GPS and further obtaining position information of a current base station by accessing a cloud server; acquiring satellite-correlated data of current position according to the position information, thereby realizing quick acquisition of the satellite-correlated data; on the other hand, receiving a signal of a radio controlled clock (BPC) and restoring an accurate clock, thereby shortening positioning time of a GPS receiver; and finally, judging the position where the current receiver is positioned by calculating signal-noise-ratio data and further controlling a switching strategy of a receiver GPS module. By using the method for reducing the power consumption of the GPS, the time for successfully positioning a GPS chip is greatly shortened, thereby correspondingly reducing the consumption of electric energy.

A method for positioning a wireless terminal, and a related device and system are provided. The method includes: obtaining, by a wireless terminal, a positioning service period and an identifier of a positioning channel from a first access point; switching, by the wireless terminal, to the positioning channel in the positioning service period; and broadcasting, by the wireless terminal, a location measurement message through the positioning channel, so that at least three access points in an access point group where the first access point is located obtain positioning measurement data after receiving the location measurement message, so as to estimate a location of the wireless terminal. Embodiments of the present invention can shorten positioning time of the wireless terminal, reduce power consumption, and improve utilization of a network wireless channel.

The invention discloses an online failure positioning method for a ring main unit cable line, and relates to the technical field of a power cable failure positioning method. The failure positioning method comprises the steps that a failure current monitoring detection system is composed of a plurality of ring main unit monitoring points. Failure current detection of one monitoring point is composed of one set of three three-phase high-frequency pulse current sensors. The three high-frequency pulse current sensors are respectively arranged on a three-phase cable of any one loop cable, and the high-frequency pulse current sensors are connected with an in-place signal processing host through a coaxial line, the trigger time of a received failure signal is precisely compared with satellite time of a GPS, and a 3G wireless data transmission unit is connected with a 3G wireless data receiving unit through a 3G wireless network. When the insulation failure happens to a 10 kV-35 kV power distribution system cable, the failure current pulse can be detected at the first time, the positions of the failure points can be automatically calculated according to the failure signal trigger time detected by substations distributed in a plurality of ring main units, the positioning time is short, the positioning precision is high, and high reliability is achieved.

The invention relates to an aviation emergency locator beacon device based on Beidou. By obtaining high-accuracy and high-reliability positioning information through a Beidou second-generation global positioning system independently developed by China, the problems that a traditional global satellite search and rescue system is large in positioning error and long in positioning time are solved; in addition, a Beidou positioning and communication system is independently developed by China, the blockade on techniques from foreign countries is broken through, and the Beidou positioning and communication system can be used for emergency positioning and military purposes under specific conditions. In coastal regions, the RDSS and RNSS technology combined differential positioning mode is put forward on the basis of a navigation radio beacon navigation and positioning system, and the positioning accuracy can be further improved. Meanwhile, alarm information is transmitted by the unique short message communication function of a Beidou first-generation satellite system and the 406 MHz satellite communication frequency band, and therefore the rescue search and positioning time can be effective shortened, the search and rescue efficiency is improved, positions of aircrafts in distress can be rapidly found by search and rescue ships or aircrafts, and the rescue speed is increased.

A single base station positioning method relates to a location method relates to a location method for mobile terminals in the cellular network, which uses single location base station to search, position and track to mobile terminals of cellular networks. A location base station tests the pilot signal time delay of a cellular base station serving the tracked target and searches for the entering channel of the target mobile terminal, estimates the arrived time delay to construct an elliptical equation taking the cellular base station and location base station as the focal points with the help of the above two time delay differential value to get the orientation angle of the target arriving at the base station to determine two crossing points, which can be the position of the searched target, one point is abandoned based on the action distance of the cellular service base station, the rest one is the determined target position.

The present invention relates to an axial line correction method of a cylindrical workpiece. According to the method, the spatial relative position of the workpiece under a measurement coordinate system is determined based on the design of the reference point C0 of the end surface of the workpiece; the first correction deltax and deltay of the deviation of a positioning section ZA and a positioning section ZB of the workpiece on an X axis and a Y axis are realized through using two groups of symmetrically-correlated compensation points on the positioning section ZA and the positioning sectionZB of the workpiece; the outlines of the positioning section ZA and the positioning section ZB are resampled, so that sampling points are obtained, a center point O'A and a center point O'B are obtained through fitting calculation; with a straight line determined by the center point O'A and the center point O'B adopted as a reference axis phi of the cylindrical workpiece, a geometric relationshipwith the reference point C0 is built and is solved; and the calibration and correction of a relative deviation angle theta between the reference axis phi and the Z axis of the measurement coordinate system are realized. The present invention also provides a diameter measurement method of the sectioned section of a cylindrical workpiece. According to the diameter measurement method, a geometric relationship between the correction values deltax and deltay of positioning sections and a measured section is built; linear compensation values deltaxi and deltayi are obtained; the coordinates of a probe relative to a sampling point are calculated; integrated and automatic sampling on the outline of the measured section is realized; and a spatial projection and fitting algorithm is adopted to process sampling data to obtain the quantity value of the measured section.

The invention relates to a method for faults caused by foreign body pollution between electrified railway insulator plates based on affine invariant moment, which aims at solvating the problems of a complicated background of insulator problem detection and the like caused by much original image content. The method can be used quickly and accurately identifying and positioning insulators through overall image classification and by virtue of the affine invariant moment, and then can be used for carrying out fault detection on the insulators. The method comprises the following steps of: detecting, identifying and classifying shafts by virtue of a Hough transformation segment, thus obtaining an insulator type after setting the classified shafts as a background; then applying the affine invariant moment to extract the insulators in the insulator type; in order to solve the problem of different change of the angles of the insulators, carrying out straight-line fitting on the boundary curves of the insulators to obtain the rotation angles of the insulators; in order to avoid the loss of foreign body characteristics, amplifying the characteristics of the insulators by virtue of morphological dilation operation; in order to improve the local contrast of insulator images, dividing each piece of the image into a block to carry out local contrast control on each block; and then carrying out grey level value statistic on each row of the blocks, and finally identifying and positioning the faults through the width of each strip in a grey level statistical chart. The method based on prior classification disclosed by the invention simplifies the background of the insulators, efficiently improves the speed and accuracy of insulator identification and positioning, reduces the difficulty of fault detection, and provides an advisable reference for the insulating property detection of an electrified railway.

A navigation signal transmitting apparatus and a location information providing apparatus are provided for reducing time of positioning with a positioning signal from an indoor positioning transmitter. When an information providing server recognizes a transmitter ID of a transmitter from a mobile phone, the server makes reference refers to database associated with the transmitter ID, and reads SVG map information associated with the ID (including information for displaying a map and information of a correspondence relation between the transmitter ID and the location of the transmitter on the map). When the server transmits data of the SVG map information to a base station, the base station wirelessly emits the data of the SVG map information. When the mobile phone detects arrival of the data, the mobile phone can obtain the location of the transmitter from the data in accordance with a browsing operation of a user of the phone.

The invention that is applicable to the technical field of security and protection provides a personnel positioning method and system, and a terminal device. The method comprises: a face image of a target person is obtained; searching is carried out to determine a snapshot picture having a similarity with the face image larger than a preset similarity in a preset range; according to identifier information of a camera shooting the snapshot picture, location information is determined; and on the basis of the location information, the target person is located. During the positioning process, thepersonnel positioning system is able to locate the camera shooting the snapshot picture according to the searched snapshot picture having the similarity with the face image larger than the preset similarity and then the location of the camera is determined based on the identifier information of the camera, so that an objective of locating the target person is achieved. Therefore, a tedious processof searching for a target person in a monitoring video base manually during target person positioning is avoided, so that the personnel positioning time is saved substantially and the human resourcesare saved.

The invention is applicable to the technical field of GPS positioning, provides a terminal equipment positioning method and a device. The method comprises: receiving a global positioning system startup information; and acquiring current sky corresponding satellite signals to achieve positioning based on prestored ephemeris data. An embodiment of the invention stores ephemeris data before the terminal device starts the GPS positioning, so that the terminal equipment fast locks satellite rapid positioning based on the stored ephemeris data after starting the GPS positioning, and effectively improves the efficiency of positioning.

An object of the present invention is to easily maintain the couch positioning accuracy and reduce the couch positioning time while resolving the complexity of input operations by the operator at the time of couch positioning. To accomplish the above object, calculation points are set to a CT image at the time of treatment planning, and the 3D coordinates of the set calculation point are set to a DRR image. When a couch positioning unit 115 loads the DRR image from an image server 109, it reads the coordinates of calculation points set to the DRR image and displays them on the monitor 116 together with the DRR image. Further, when DR image data is loaded into the couch positioning unit 115, the DR image is displayed on the monitor 116 and calculation points set to the DRR image are set also to the DR image.

The invention discloses a method for quickly calculating the fuzzy degree between RTK reference stations in a Beidou-compatible GPS / GLONASS network. In a network RTK model, the calculation accuracy of the fuzzy degree between RTK reference stations has a direct bearing on the precision of space error modeling of the troposphere, the ionosphere, and the like. In the multi-constellation fusion network RTK, the number of satellites increases significantly, which provides favorable conditions for quickly calculating the fuzzy degree. According to the invention, first, a high-altitude angle satellite is fixed according to a network RTK fuzzy degree calculation model with atmospheric delay priori information, and then, calculation is performed based on the observed value constraint atmospheric delay of a satellite of which the fuzzy degree is fixed and an observation equation corresponding to a low-altitude angle satellite or a newly rising satellite or an unlocked recaptured satellite so as to quickly fix the fuzzy degree of a satellite of which the fuzzy degree is not fixed. By adopting the method, the time for calculating the fuzzy degree between network RTK reference stations is obviously shortened, and the precision and reliability of network RTK positioning are improved.

The present invention discloses an identification code, and an automatic guiding vehicle rapid navigation method and system. The identification code comprises a frame, and a direction icon arranged in the frame and a two-dimensional code. The identification code can greatly reduce the identification time in the driving process of the automatic guiding vehicle, facilitate improving the operation efficiency of the automatic guiding vehicle and has all the advantages of vision identification.