6 results about "Hybrid positioning system" patented technology

This invention relates to the field of port vehicle management technology and discloses a hybrid positioning system for classifying and controlling port-owned and externally-entering vehicles. The system includes a vehicle classification and determination module, a multimodal location credential node, a module for actively binding and positioning owned vehicles, a module for passively binding location credentials for externally-entering vehicles, and a classification and control processing module. The multimodal location credential node collects optical response information, magnetic field response information, and millimeter-wave response information generated by the vehicle when it passes through the node's coverage area and generates location credential data. Externally-entering vehicles generate multimodal location response information through the passive location credential module to form location credential data. Vehicle positioning records or area positioning records are generated according to the vehicle category. This invention, by setting up multimodal location credential nodes and a passive location credential module for externally-entering vehicles, achieves the generation of area positioning records based on node passage records, reducing the loss of positioning information caused by differences in terminal installation conditions.

A hybrid positioning system for a vehicle includes one or more controllers in wireless communication with a plurality of surrounding vehicles located in an environment surrounding the vehicle and a cellular software defined network including an edge positioning function. The one or more controllers execute instructions to receive, from the plurality of surrounding vehicles, relative position measurements that are each indicative of a position of one of the plurality of surrounding vehicles relative to the vehicle, wherein the relative position measurements are received by the one or more controllers in real-time. The one or more controllers receive a precise global position of the vehicle and the plurality of surrounding vehicles from the edge positioning function of the cellular software defined network, and fuse together the relative position measurements and the precise global position of the vehicle to determine a precise position of the vehicle.

The invention relates to a method (100) for adjusting a plurality of measurements of a hybrid positioning system, comprising the following steps, which are carried out by a data processing device: - Obtain (101) the majority of measurements with respect to at least two target objects, wherein the majority of measurements includes at least one distance measurement and / or at least one position measurement, - Linking (102) the plurality of measurements with a state estimation using a functional model for the hybrid positioning system, wherein the state estimation is related to the plurality of measurements with respect to a position and / or a distance measurement in relation to the at least two target objects, - Linearizing (103) the functional model using a Jacobi matrix J, where the Jacobi matrix J specifies the linear approximation of the functional model around a current state estimate, - Collecting (104) stochastic information regarding a distribution of measurement errors in a sparse matrix Q, - iterative compensation (105) of measurement uncertainty and / or measurement errors based on a weighted least-squares procedure using the linearized functional model and the collected stochastic information, - Adjusting (106) the majority of measurements based on compensation (105). Furthermore, the invention relates to a computer program and a device for this purpose.

The application discloses a self-adaptive hybrid positioning method and system, and belongs to the technical field of wireless positioning, which is used for realizing high-precision positioning of micro base stations under the architecture of single baseband unit and multiple distributed radio frequency units. The method comprises the following steps: a baseband processing unit controls multiple distributed radio frequency units to synchronously receive uplink wireless signals of a target terminal, and sends channel estimation data to an upper positioning calculation device; the upper positioning calculation device identifies the signal propagation state between the target terminal and each radio frequency unit according to the channel characteristic parameters; when the line-of-sight propagation is identified, a geometric positioning mode is used for terminal position solution; and when the non-line-of-sight propagation is identified, a fingerprint positioning mode is used for target position estimation. The clock synchronization characteristic of the single station and multiple radio frequency units is utilized, and the positioning mode is adaptively switched through propagation state identification driving, so that the positioning precision and robustness are improved.

The invention discloses a 10kV switch trolley intelligent navigation automatic transportation system and method. A five-layer modular architecture of a sensing layer, a transmission layer, a decision-making layer, an execution layer and an interaction layer is adopted. The sensing layer realizes high-precision environment modeling and positioning through four-direction stereoscopic vision, a hybrid positioning system (UWB + IMU + RFID) and a pressure sensor array in combination with SGM, ICP and ESKF algorithms; the decision-making layer operates an improved A * path planning algorithm and a DWA obstacle avoidance strategy, electrical equipment safety spacing constraints are embedded, and a crab-walking mode is started in a narrow channel; the execution layer drives omnidirectional movement through servo three-ring cascade control, and the transmission layer adopts a double-link redundancy design to ensure reliable data transmission; the interaction layer integrates two-factor authentication and digital twinborn visualization functions. The system solves the problems that traditional manual transportation is low in efficiency and poor in positioning precision, and existing automatic equipment is insufficient in adaptability, millimeter-level precise transportation and whole-process remote monitoring are achieved, manual or crane loading and unloading are matched, and the system is suitable for the high-precision operation and maintenance requirements of the 10kV switch trolley of the electric power system.

The present application provides a kind of heterogeneous linear motor direct-drive static pressure air floatation and flexible hinge stroke scaling type two-dimensional macro-micro compound positioning system, it relates to precision mechatronics field.The system includes macro motion platform and micro motion platform.Macro motion platform adopts the heterogeneous combination of X-axis U-shaped flat plate linear motor driven static pressure air floatation guide rail and tube type linear motor driven precision linear guide rail, realizes large stroke, high-speed coarse positioning.Micro motion platform is integrated on the macro motion platform, adopts piezoelectric ceramic actuator to drive symmetric two-stage lever flexible hinge mechanism, the mechanism will actuator input displacement be reduced by ≥7:1 ratio and be converted into nanometer level displacement output, the positioning error of macro motion platform is dynamically compensated.The present application solves the problem that large stroke, high speed and nanometer level positioning accuracy are difficult to consider through two-stage cooperation of macro motion coarse positioning and micro motion fine compensation, and the comprehensive performance is excellent, applicable to high-precision field such as semiconductor manufacturing, ultra-precision machining.