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187results about How to "Fast positioning" patented technology

Intelligent video monitoring system based on three-dimensional virtual scene

The invention relates to an intelligent video monitoring system based on a three-dimensional virtual scene, comprising a video collection subsystem, an intelligent video analysis subsystem, a comprehensive display subsystem, a calibration and positioning subsystem, a comprehensive management subsystem, a retrieval playback subsystem, and the like, wherein the video collection subsystem collects amonitoring video; the intelligent video analysis subsystem detects, identifies and tracks a movement target in the video and then classifies the movement target; the comprehensive display subsystem displays a bidimensional video and the three-dimensional virtual scene of the target, and displays the movement target category and a path thereof in the superposing manner in real time in the three-dimensional virtual scene; the calibration and positioning subsystem realizes the positioning of the bidimensional target in the three-dimensional virtual scene on the basis of acquiring parameters inside and outside a camera; the comprehensive management subsystem is responsible for managing and scheduling tasks, such as the system configuration, the log generation and retrieval, the authority hierarchical management, the defense area configuration and defense arrangement/defense withdrawing, the target video storage, the system alarming output, and the like; and the retrieval playback subsystem retrieves, edits and playbacks the target video with an event as a main line.
Owner:BEIJING SISHIELD SECURITY

Wireless sensor network multiple target real-time tracking system based on event drive

The invention discloses a wireless sensor network multiple target real-time tracking system based on event drive. The system is designed by using a hierarchy logical structure, wherein a perception layer, a network communication layer and an application layer are respectively comprised. In order to avoid network conflict in a multiple target tracking process, a self-adaption clustering node scheduling strategy based on a task is used. A Calman filter positioning tracking algorithm based on event drive is disclosed. A least square method with fast convergence speed is used to modify a current Calman filter state value, and positioning tracking is carried out on a number of mobile robots in a sensor network. The system uses a double token working mode and is combined with a dynamic time slot allocation method based on a task to effectively complete a network task in real time. The system uses the self-adaption clustering node scheduling method, can automatically carry out clustering on measurement data according to a moving target, breaks a previous working mode which is limited by single target tracking, and realizes a real-time multiple target tracking function and remote feedback control based on a wireless network.
Owner:SOUTH CHINA UNIV OF TECH

Positioning system and method of local discharge of transformer

The invention discloses positioning system and method of the local discharge of a transformer, belonging to the technical field of discharge monitoring of the transformer. The positioning system comprises an ultrahigh-frequency sensor, a detector amplifier, an ultrasonic sensor array unit, a filter amplifier, a multi-channel synchronous data acquisition unit and a data processor. The positioning method comprises the following steps of: acquiring an ultrahigh-frequency electromagnetic signal and an ultrasonic signal, comparing the ultrahigh-frequency electromagnetic signal with the ultrasonic signal, determining the time-domain relation of the ultrahigh-frequency electromagnetic signal and the ultrasonic signal, and calculating the distance between a local discharge source and the geometric center of the ultrasonic sensor array unit according to the time-domain relation; then determining an azimuth angle and a pitching angle of the local discharge source relative to a plane with the ultrasonic sensor array unit positioned by utilizing the ultrasonic signal; and finally determining the specific position of the local discharge source according to the calculated distance, azimuth angle and pitching angle. The invention has high positioning speed and high positioning accuracy.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Robot global repositioning method

The invention discloses a robot global repositioning method, and belongs to the technical field of robots. The robot global repositioning method comprises the following steps of at the beginning, setting the situation that a robot has the same probability distribution in all positions; enabling the robot to obtain peripheral environmental information of the robot in a real-time manner and construct a partial map through carrying a laser radar; through using a method of image matching, finding possible position of the partial map in the global map and probability at the possible position, and updating positioning confidence coefficient of the robot in the global map; calculating the difference value between an updated maximum positioning confidence coefficient and a second maximum positioning confidence coefficient; and judging whether the difference value is greater than a set threshold or not, if yes, completing the positioning, or else, according to data of a speedometer carried by the robot, updating the positioning confidence coefficient of the robot. According to the robot global repositioning method disclosed by the invention, only needing a sensor carried by the robot, the robot can complete global repositioning, and has high autonomy and high adaptability; and the positioning speed is high, and the robustness is high.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Multi-station plug-in mounting production line and automatic mouse PCB (printed circuit board) production line

The invention discloses a multi-station plug-in mounting production line and an automatic mouse PCB (printed circuit board) production line. The multi-station plug-in mounting production line comprises a PCB loading device, a plurality of sets of sequentially butted plug-in mounting equipment, a reflow welding machine arranged at the outer end of the last plug-in mounting equipment, an unloading device arranged at the material discharging end of the reflow welding machine, an upper cover conveying device which is arranged from the material discharging end of the reflow welding machine to the outer end of the last plug-in mounting equipment, and a bottom cover conveying device arranged from the material discharging end of the reflow welding machine to the PCB loading device, wherein the first plug-in mounting equipment is butted with the PCB loading device. According to the multi-station plug-in mounting production line, a bottom cover is used as a lower part of a plug-in mounting jig; after a PCB is subjected to plug-in mounting at multiple stations, an upper cover is used as an upper part of the jig; the upper cover is fixedly connected with the bottom cover, so that an electronic element can be reliably fixed on the PCB, and the electronic element which is plugged into the PCB but is not completely fixed can be reliably welded in a process of the reflow welding machine; therefore the reliability and the stability of a PCB product can be improved.
Owner:SHENZHEN RAPOO TECH

Indoor positioning information push method based on GNSS satellite signal

ActiveCN107607970ANo hardware design changes requiredFast positioningSatellite radio beaconingSmart antennaSignal regeneration
Provided is an indoor positioning information push method based on GNSS satellite signals. The method includes the following steps: (1) arranging a camera device indoors, taking the camera device as acoordinate system original point to divide a to-be-measured room into planar grid coordinate systems, and utilizing a moving object detection technology to obtain two-dimensional coordinate values ofa user in the room; (2) obtaining an actual geological coordinate, time service information and PPS synchronous second pulse information of an antenna through the indoor GNSS satellite signal reception antenna, and combining the two-dimensional coordinate values of the user and the geometrical parameters of the room to perform calculation and obtaining actual geological coordinate values of the user; (3) conducting regeneration of GNSS satellite signals; and (4) through the intelligent antenna technology, forming a wave beam pointing the user and broadcasting the GNSS satellite signals in a corresponding position so that a positioning apparatus of the user resolves the broadcasting position. The GNSS satellite signals are taken as a medium to perform indoor positioning. The method has theadvantages that the precision is high, the speed is fast and a reception apparatus does not need to change or add other pieces of hardware.
Owner:XI AN JIAOTONG UNIV

Method and system for positioning wireless sensor network

The invention discloses a method and system for positioning a wireless sensor network, and the method and system can be used for solving the problems of low positioning speed and low positioning precision of the existing method and system for positioning the wireless sensor network. The distance between each beacon node and a node to be detected in the system is 1-10m. The method comprises the following steps: three beacon nodes respectively utilize self IDs, data length, target addresses, data, zone bits and the like to form data frames, and the data frames are periodically broadcast in a CSMA (Carrier Sense Multiple Access) mode; the node to be detected receives broadcast signals from the three beacon nodes as well as stores and analyzes the structure of each part of each data frame; an RSSI (Received Signal Strength Indicator) value is read, the distance between a wireless sensor network node to be detected and each three beacon node is obtained through calculation by an RSSI-distance linear transformation model; and then, the coordinate of the node to be detected is obtained by virtue of trilateration so as to position the wireless sensor network node. The method and the system are suitable for positioning the wireless sensor network node.
Owner:HARBIN INST OF TECH +1

Magnetic array position sensing device and positioning method thereof

The invention relates to a sensing device and a positioning method thereof, in particular to a magnetic array position sensing device and a positioning method thereof. The magnetic array position sensing device comprises a permanent magnetic body device 1 which is provided with a magnetic array 101 and a magnetic sensitive element device 2 which is matched with the permanent magnetic body device 1 and is provided with a magnetic sensitive element array 201, wherein the magnetic sensitive element device 2 is fixed on a main circuit board 7 which contains a distance test device 3, and the magnetic sensitive element array 201 is fixed on the magnetic sensitive element device 2 through a fixing device 4. The magnetic array position sensing device has the following advantages that: 1. an independent positioning plate is adopted, and the magnetic sensitive element is welded on the positioning plate, so the position error of the magnetic sensitive element is reduced; 2. the relationship between the width of the magnetic body array unit and the gap of the magnetic sensitive element is re-designed, so under the condition that the precision of the system is maintained, the distance between the magnetic sensitive elements is enlarged, the consumption of the magnetic sensitive element is reduced, and the cost of the device is reduced.
Owner:曹宜

Detecting device and detecting method for rotation center of angle-of-attack mechanism of wind tunnel test section

The invention relates to a detecting device and a detecting method for a rotation center of an angle-of-attack mechanism of a wind tunnel test section. The detecting device comprises a supporting positioning structure with a horizontal extending structure. The supporting positioning structure is provided with a guiding structure which can make the horizontal extending structure move vertically. The extending end of the horizontal extending structure is provided with a detecting positioning structure, and a measuring device which is arranged on the bent cutter supporting plate of the angle-of-attack mechanism of the wind tunnel test section correspondingly with the detecting positioning structure and can perform positive and negative angle-of-attack arc movement of the bent cutter supporting plate. The detecting device and detecting method for the rotation center of the angle-of-attack mechanism of the wind tunnel test section realize more visual and quick measurement process and furthermore establish a standard with small error and high stability. Furthermore the detecting device and the detecting method have advantages of remarkably shortening an application period, reducing number of operators, reducing labor intensity, and greatly reducing cost at each aspect.
Owner:四川省工业设备安装集团有限公司

Mobile robot positioning system and method based on hybrid navigation band

The invention provides a mobile robot positioning system based on a hybrid navigation band, and is suitable for the robot positioning technical field. The mobile robot positioning system includes a DataMatrix code band and a color band arranged on the ground of a walking path of a mobile robot. The color band is set in a path of a high-speed motion area. The DataMatrix code band is set in a path of a precise positioning area. A circumscribed rectangle of a DataMatrix code is composed of two adjacent solid line edges and two adjacent imaginary line edges. A DataMatrix code image carries a pathdistance with calibration points; the mobile robot is provided with a camera and a positioning sensor, and the photographic plane of the camera is parallel to the ground. The positioning sensor identifies whether the DataMatrix code exists in an image based on the image captured by the camera. If the DataMatrix code exists in the image, the mobile robot is positioned based on the DataMatrix code in the image. If no DataMatrix code exists in the image, the mobile robot is positioned based on the color band. Accurate coordinate information of the robot can be obtained in an area where precise positioning is required, and stable and reliable position information of the robot can be obtained in an area where high-speed motion is required, the positioning speed is fast, and high-speed motion requirements can be met.
Owner:WUHU HIT ROBOT TECH RES INST

Antenna positioning method and apparatus, and wireless access device

ActiveCN106792774AEnsure that the signal strength meets the requirementsImprove positioning efficiencyNetwork planningAntennasComputer scienceSignal intensity
The embodiment of the invention discloses an antenna positioning method and apparatus, and a wireless access device, for solving the problem that the existing antenna positioning is difficult to meet accurate positioning and efficient positioning. The method disclosed by the embodiment of the invention comprises the following steps: controlling a target antenna to traverse adjustable angles of the target antenna at a preset first stepping value according to a preset first path; determining the antenna angle corresponding to the signal intensity satisfying preset conditions as a first antenna angle in the traversal process, and interrupting the traversal of the target antenna; obtaining area signal intensity of first adjustable angle areas, and determining the first adjustable angle area having the maximum area signal intensity as a better area; controlling the target antenna to traverse the better area at a preset second stepping value according to a preset second path, wherein the second stepping value is smaller than the first stepping value; determining the antenna angle corresponding to the maximum signal intensity as a second antenna angle in the traversal process of the better area; and finally positioning the target antenna to the second antenna angle.
Owner:TP-LINK

Schmidt roof prism processing method and positioning tool thereof

PendingCN108422286APositioning is simple and fastGuaranteed accuracyOptical surface grinding machinesProduction ratePrism
The invention discloses a Schmidt roof prism processing method and a positioning tool thereof, and belongs to the technical field of optical prisms. In the positioning tool, a first backrest positioning block with a first backrest positioning surface and a second backrest positioning block with a second backrest positioning surface are fixed on the upper surface of a substrate, the first backrestpositioning surface and the second backrest positioning surface are perpendicular to the upper surface of the substrate, and a prism side processing block is positioned above the substrate and provided with a prism side processing surface perpendicular to the upper surface of the substrate. The processing method includes the steps: firstly, processing a first side surface of a prism, and positioning and processing a second side surface of the prism through the positioning tool; secondly, positioning and initially processing two roof surfaces through the positioning tool; finally, taking one roof surface as a standard to grind the other reference surface, and enabling the accuracy of a roof angle to be within 1''. According to the method, process steps are optimized without changing an existing processing device, the method ensures that the processed roof angle is within 1'', the accuracy of surfaces is high, technical requirements are low, and production efficiency is high.
Owner:马鞍山市江南光学有限公司
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