Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

362results about How to "For automatic positioning" patented technology

Mobile robot real-time positioning method based on laser radar and map matching

The invention discloses a mobile robot real-time positioning method based on laser radar and map matching. The method comprises the steps that a 2D map of the environment is established; transverse and longitudinal checkerboard average blocking is performed on the 2D map according to the fixed interval distance; assumption deduction is performed on each block of the map, assuming that the upper left position of the block is the initial position of the robot, direction enumeration is performed on the basis of each block; as for each assumption, the point cloud data of laser radar are mapped to the map pixels; a matching degree model is established to judge the score of each assumption, and the sum of the pixel distance "obstacle pixel" Manhattan distance corresponding to all the point cloud data of the laser radar is accumulated as for each assumption; the block and the direction of the minimum sum are selected to act as the initial position and the direction of the robot; and the real-time position of the robot is tracked by using the Monte Carlo method in the movement of the robot. The robot is enabled to perceive its position only through the built-in laser sensor and the known map without assistance of artificial intervention or environmental markers.
Owner:SOUTH CHINA UNIV OF TECH

Vehicle network integration technology-based electric vehicle charging system and implementation method thereof

The invention discloses a vehicle network integration technology-based electric vehicle charging system and an implementation method thereof. The electric vehicle charging system comprises an electric vehicle network mobile computing terminal, which establishes a connection with an intelligent electric network via a power line carrier modulation and demodulation module, is connected with a cloud computing remote service platform, and uploads vehicle information of electric vehicles to the cloud computing remote service platform; the cloud computing remote service platform transmits charging information to positioning practicable charging station information and the electric vehicle network mobile computing terminal; electric vehicles are in information interaction via vehicle-mounted electric vehicle mobile computing terminals; and a microwave power transmission device is arranged in a charging station. The implementation of the invention is based on an electric vehicle technology integrating a vehicle intranet and a vehicle outer net; the vehicle intranet is large in information transmission capacity, is communicated with transport facilities via the wireless communication manner of a power line carrier; and the real-time performance of communication on the premises of multiple networks and larger data capacity is ensured.
Owner:SHANDONG ACAD OF SCI INST OF AUTOMATION

Intelligent pantograph device for trolley bus and using method thereof

The invention relates to an intelligent pantograph device for trolley bus and a using method thereof, which relate to the field of intelligent control of pantograph of a trolley bus and solve the problem that the conventional trolley bus can only realize overtaking on a single side and the problem that the automatic connection cannot be realized between the pantograph and a contact wire in an overtaking process. In the invention, when the pantograph is lifted, a contact wire tracing program based on the processing of image captured by an infrared camera on a pantograph assembly is adopted to regulate the angle of the pantograph, a movable cable clamp is used to compensate for an error, and thus, the pantograph is connected to the contact wire automatically; during overtaking, a rear vehicle informs a front vehicle of lowering the pantograph through a communication unit and determines if to allow the pantograph of the front vehicle to return, the contact wire tracking program is used to lower the pantograph of the front vehicle if the pantograph of the front vehicle does not return, and the head of the pantograph is allowed to return to the edge above the vehicle body; and when the pantograph is lowered, the pantograph can fall and return automatically. The device can realize the automation of the power connection and disconnection of the trolley bus and the automation of overtaking, and greatly improve the operation efficiency and flexibility of the trolley bus. Thus, the device has certain practical value.
Owner:JILIN UNIV

Method of using intelligent mobile phone to assist indoor positioning

The invention discloses a method of using an intelligent mobile phone to assist indoor positioning. The accuracy of indoor positioning is improved through accurately positioning the floor of a user. The method comprises steps: an air pressure change trajectory when the user moves in a building is monitored through an air pressure sensor of the mobile phone; when multiple users are in the same elevator or Wi-Fi reading of the multiple users is close, the air pressure sensors of the users are calibrated in pairs; the air pressure change trajectories of the users are all uploaded to a center server, the server combines the multiple trajectories, a trajectory map containing the air pressure value of each floor is obtained, and thus, according to the air pressure reading of the user, the floor of the user is positioned; and according to Wi-Fi signals around the user with the known floor, a Wi-Fi map corresponding to the floor is built, and the Wi-Fi map is used for positioning a floor for a user whose mobile phone is not provided with the air pressure sensor. the method can position the floor of the user in the current building, the indoor positioning range can be narrowed, and the positioning precision is improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Method for automatically identifying and positioning coordinates of image point of artificial mark in camera calibration control field

The invention discloses a method for automatically identifying and positioning coordinates of an image point of an artificial mark in a camera calibration control field, which comprises the following steps of 1, arranging a control mark and a color coded mark; 2, setting initialization parameters; 3, adopting a camera to be calibrated to carry out image shooting on the control mark and the color coded mark which are arranged in the camera calibration three-dimensional control field and transmitting a shot image to a data processor; 4, extracting and identifying the color coded mark by adopting the data processing; 5, carrying out automatic positioning on coordinates of an image point of the control mark by adopting the data processor; and 6, carrying out high-accuracy measurement on the coordinates of the image point of the control mark by adopting the data processor. The method has simple steps, is reasonably designed and is convenient to implement; automatic positioning on the control mark can be implemented; extracting efficiency of the control mark is greatly improved; and moreover, the method can achieve higher measurement accuracy and has strong practicality and high popularization and application values.
Owner:XIAN UNIV OF SCI & TECH

Positioning system and method for electric energy quality disturbance source

The invention relates to a positioning system and a positioning method for an electric energy quality disturbance source. The positioning system comprises online electric energy quality monitoring devices, wherein each online electric energy quality monitoring device is connected between every two master electric energy quality management stations through the Ethernet. Each online electric energy quality monitoring device is arranged at a monitoring point of a power transmission line of a radiation type power distribution system, and every two online electric energy quality monitoring devices are connected through the Ethernet; when an actual disturbance event occurs in the system, one of the online electric energy quality monitoring devices detects the disturbance event, then records an occurrence moment of the disturbance source, informs the other online electric energy quality monitoring devices in the network through the Ethernet in a broadcasting way to start a disturbance wave recording system on the basis of the moment, records sampling data of N cycles before the moment and N cycles after the moment, and sends the sampling data to the master electric energy quality management stations in real time; through the mutual cooperation of all the online electric energy quality monitoring devices, a system coverage matrix and a system direction matrix are established, and then the disturbance source is positioned.
Owner:JIANGSU ELECTRIC POWER CO +2
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products