163 results about "Navigation aid" patented technology

The invention relates to the technical field of blind guiding robot interactive navigation, and particularly discloses a blind guiding robot interactive navigation system combining vision, inertial navigation and voice, which is characterized in that environmental vision, movement and voice data are synchronously acquired through a multi-modal perception data acquisition module, and are analyzed through a situation-user joint state feature extraction module; a user potential intention deduction module is combined to predict a user intention and generate a self-adaptive guide strategy; a self-adaptive guiding path optimization module adjusts a navigation path according to a strategy to ensure safety and high efficiency; finally, the situational multi-mode interaction instruction output module provides voice and tactile feedback, and interaction experience and navigation autonomy are enhanced. According to the method, the travel problem of the visually impaired person in a complex environment is solved, the individuation, context perception capability and safety of blind guiding are improved, and more natural and efficient navigation assistance is brought to the visually impaired person.

Described herein are techniques and mechanisms for geographic routing. A database system may store data records corresponding with user accounts and including historical routing information characterizing geographic routes determined in association with the user accounts. A communication interface may receive a request from a remote computing device authenticated to a user account and identifying an initial geographic location and a terminal geographic location. A geographic routing engine may determine a route including turn-by-turn instructions for moving from the initial geographic location to the terminal geographic location. A generative language model interface may complete a navigation prompt to include novel text identifying supplemental route information. A user interface generation interface may transmit an instruction to the remote computing device to present a user interface that includes the turn-by-turn instructions and some or all of the supplemental route information.

The invention relates to the technical field of navigation assistance, in particular to a dynamic obstacle prediction and obstacle avoidance path planning method based on multi-sensor fusion, which realizes omnibearing perception of a dynamic obstacle through multiple sensors, provides a rich and reliable data basis for subsequent processing, and improves the accuracy of the dynamic obstacle prediction and obstacle avoidance path planning. Meanwhile, motion prediction is carried out on a dynamic obstacle through data processing fusion and model prediction, the motion inertia of the obstacle is fully considered, track prediction of the obstacle is closer to a real physical rule, a global path search problem is converted into a local but large enough space search problem through a mode of delimiting a final obstacle avoidance target area, and the search efficiency is improved. According to the method, the number of grids needing to be processed and the search calculation amount are remarkably reduced, the harsh requirement of the mobile device for the real-time performance is met, the area possibly occupied by the obstacle in the future is avoided in real time in the mode of constructing the cost function, then the obstacle avoidance planning path is generated, and the path safety is improved.

The invention belongs to the technical field of water traffic transportation safety and navigation mark navigation aiding, and mainly relates to a navigation mark anti-collision early warning method based on multi-sensor fusion, and the method comprises the steps: constructing a multi-sensor fusion architecture integrating an AIS terminal, a laser radar and an AI camera, and achieving the omnibearing monitoring and precise recognition of a ship in a navigation channel; a grading response mechanism is adopted, corresponding functions are dynamically started according to the real-time distance between the ship and the navigation mark, and targeted response from early warning to emergency warning is achieved; a legal evidence chain packaging mechanism is introduced, a unique ID is generated for each early warning event, formatted evidence is stored in an associated mode, and integrity and traceability of data are ensured; through a dynamic energy supply strategy, an equipment operation mode is intelligently adjusted according to a storage battery voltage threshold value, and continuous and stable work of the system under the conditions of cloudy and rainy days, night and the like is guaranteed; according to the invention, the accuracy, timeliness and reliability of navigation mark collision early warning information are effectively improved.

The invention relates to a navigation aid decision-making method based on a large model, which comprises the following steps of: constructing a scene knowledge model of real-time information such as intelligent navigation situation awareness, situation cognition and intelligent navigation design operation conditions, and designing entities, attributes and relationships between the scene knowledge model and navigation knowledge to form a navigation knowledge aid decision-making graph mode; collecting and preprocessing navigation knowledge data, and constructing a user-defined navigation knowledge data set; performing fine tuning on the pre-trained general large model through the knowledge graph extraction data set, and constructing a knowledge graph knowledge extraction large model; performing fine tuning on the pre-trained general large model through the knowledge question-answer fine tuning data set, and constructing a navigation knowledge question-answer large model; constructing a navigation knowledge aided decision-making knowledge graph; based on the navigation knowledge question and answer large model and the navigation knowledge aid decision knowledge graph, constructing a navigation aid decision generation model based on reinforcement learning; and designing the navigation aid decision-making device based on the intelligent voice interaction mode. The method can provide auxiliary decision support for ship navigation.

A flying vehicle with folding wings that drives well on the ground and flies well in the air; controlled from inside, it changes from automotive to aircraft configuration without the operator needing to get out of the vehicle. The balance point of the vehicle is located midway between the front and back wheels, providing good handling on the road. In the aircraft configuration with wings unfolded, there is a front wing and a back wing. The incidence of the front wing is controllable, enabling the craft to rotate and take off with a center of gravity located well ahead of the rear wheels. The back wing is fitted with foldable vertical stabilizers near its wing tips. In automobile configuration the wings are folded on top of the body; the wings resemble a roof rack with large surfboards on it. Driven wheels provide motive power on the ground; ducted fans provide thrust for air travel. An autopilot system provides stability and navigation aid, particularly in bad weather or poor visibility. In the roadable configuration, filling water ballast tanks provides additional crosswind stability and crash protection. Also in a roadable configuration, the present invention may be licensed as a three-wheeled motorcycle towing a two-wheeled trailer. In its flying configuration, the invention can be licensed as a Light Sport Aircraft.

A navigation assistance system using a plurality of sensors according to an aspect of the present disclosure includes a display configured to provide a monitoring image, a sensor unit including at least one sensor, a memory in which at least one program is stored, and at least one processor configured to execute the at least one program, wherein the at least one processor obtains image frame information of an object using a first sensor, calculates information about the object using a second sensor, calculates a risk of collision between a host ship and the object by fusing the image frame information of the object and the information about the object, and determines an avoidance path based on the calculated collision risk.

The invention discloses a navigation method, device and equipment for a rescue scene and a computer program product. The method comprises the following steps: acquiring an initial path planning result and multi-dimensional path optimization information of a rescue vehicle; the initial path planning result is optimized according to the multi-dimensional path optimization information, and driving of the rescue vehicle is controlled according to the optimized path; real-time traffic information is obtained through V2X communication, so that auxiliary reminding information is generated, and whole-road-section auxiliary reminding is carried out; and when the navigation auxiliary condition is met, acquiring navigation auxiliary information through the intelligent wearable device so as to carry out auxiliary navigation on a special road section. According to the invention, path optimization is carried out by using the multi-dimensional path optimization information, and a more reasonable and efficient driving path is planned for the rescue vehicle. And external information is acquired by means of V2X communication, and all-road-section auxiliary reminding is carried out, so that the driving safety and the passing efficiency are improved. And navigation auxiliary information is provided through the intelligent wearable device in a special road section, so that the rescue capability in a complex scene is further improved.

The invention discloses a magnetic navigation assisted PICC (peripherally inserted central catheter) visual positioning method. The method comprises the following steps: acquiring signal field distribution data; acquiring real-time position information flow and direction information flow according to the signal field distribution data; based on the position information flow and the direction information flow, a data fusion processing technology is adopted, multi-source information is integrated, and dynamic space coordinate data of the PICC in the deep domain of the human body are obtained; according to the dynamic space coordinate data, a real-time acquisition rate optimization model is constructed, and the real-time acquisition rate optimization model is used for analyzing the delay condition of the information feedback speed and judging whether feedback delay exceeds a preset threshold value or not, and the signal field intensity is adjusted according to a judgment result; mapping the position and direction information flow of the PICC to a visual interface according to the adjusted signal field intensity and dynamic space coordinate data to obtain a preliminary dynamic visual image; and obtaining a dynamic visual image through the preliminary dynamic visual image in combination with a guide accuracy calibration mechanism.

The invention provides an intelligent monitoring and early warning system based on a marine navigation mark, and relates to the technical field of monitoring and early warning, and the system comprises a navigation mark data collection module which is used for obtaining various data according to a preset navigation mark monitoring interval. And the risk assessment module is used for obtaining a position offset risk value according to the influence of the interference factor data on the navigation mark position. And the deviation early warning module is used for setting a position deviation threshold value according to the historical pose data in combination with the external factor data, judging whether the position deviation risk value of each navigation mark exceeds the position deviation threshold value or not, and generating a preliminary early warning signal if the position deviation risk value of each navigation mark exceeds the position deviation threshold value. And the ship influence early warning module is used for calculating a ship navigation influence coefficient according to the navigation data of the surrounding ship sending the preliminary early warning signal navigation mark in combination with the real-time position parameter, and generating early warning information in combination with the position offset risk value. The navigation mark monitoring precision is improved, the early warning timeliness is enhanced, the operation and maintenance cost is reduced, and the method can automatically adapt to different environments and scenes.

The invention discloses a navigation aid information real-time transmission and analysis system based on a navigation mark, and relates to the field of navigation mark telemetering, the system is composed of a plurality of functional modules, and the system comprises a data acquisition module for acquiring dynamic data, meteorological data and hydrological data of ships near the navigation mark; the edge calculation module is used for generating a ship real-time track according to the ship dynamic data, obtaining a ship prediction track based on the ship real-time track and the hydrological data, and calculating a deviation degree based on a preset ship channel and the ship prediction track; the risk prediction module carries out risk analysis on the deviation degree according to meteorological data and carries out route adjustment according to a risk analysis result, and the route adjustment module generates an optimized route by applying an A * algorithm and considering ship dynamic constraint and channel limitation and then sends an instruction in time through the VHF radio module, so that risks of ship deviation from a channel, collision and the like are effectively avoided; the safety of sailors, ships and goods is greatly guaranteed.

The invention provides an inertial navigation aided navigation positioning method and system, and the method comprises the steps: calculating the coordinate of each navigation satellite in an ECEF coordinate system according to the satellite ephemeris of a satellite navigation system; according to the navigation satellite coordinate and the inertial navigation system positioning result, the azimuth angle and the pitch angle of the navigation satellite relative to the optical detection equipment under the ENU coordinate system are solved, and the navigation satellite is tracked; acquiring star maps collected by the optical detection equipment, matching the star maps through a star map recognition algorithm, resolving a coordinate transformation matrix between two continuous frames of star maps, and recognizing fixed stars and satellites in the star maps based on the transformation matrix; converting the identified fixed star in the field of view into an ECEF coordinate system, calculating an observation angular distance between the fixed star and the satellite, and calculating a satellite observation vector in the ECEF coordinate system according to the observation angular distance; and performing error correction on the positioning result of the inertial navigation system based on the satellite observation vector. Through the scheme, the positioning precision of the inertial navigation system can be improved, and the influence of interference deception signals is reduced.

The invention relates to the technical field of visual impaired people assistance, in particular to a self-adaptive perception prompting system and method for visual impaired people assistance, and the method comprises the following steps: obtaining environment data around a user; the target information is recognized and transmitted to the user through the wearable somatosensory feedback module in a skin stimulation mode, so that the user can perceive surrounding objects and directions thereof through skin stimulation, and then obstacle avoidance can be achieved. Furthermore, an active exploration self-adaptive auxiliary module is introduced, an action track of a user is collected and analyzed to be compared with an environment model, an omission area or space deviation in perception is recognized, and a reinforcing prompt is triggered, so that the user is guided to complete more comprehensive environment exploration and space construction. Limitations of a traditional blind guiding stick and a traditional blind guiding dog are avoided, and higher-precision space perception and navigation assistance can be obtained only by wearing the somatosensory feedback module.

Methods provide computer-navigation assisted total hip arthroplasty (THA) procedures. Such procedures include the use of a navigated instrument, e.g., a navigated reamer construct or a navigated inserter construct to prepare the acetabulum and insert an acetabular shell, a camera tracking system adapted to track a pose of the navigated inserter or reamer construct relative to the patient in use, and a computer platform adapted to receive pose tracking information and generate and display navigational guidance for the user.

The application discloses a trajectory planning method and device, equipment and storage medium, and belongs to the technical field of vehicle navigation auxiliary driving or automatic driving. The application obtains a sampling trajectory cluster, determines actual motion trajectories of vehicles corresponding to each sampling trajectory in the sampling trajectory cluster, and screens a target trajectory from the sampling trajectory cluster according to the actual motion trajectories, so that the optimal trajectory is screened from the sampling trajectory cluster again based on the actual motion trajectories of the vehicles after the actual motion trajectories of the vehicles corresponding to each sampling trajectory are determined. In the above manner, it can be ensured that the optimal cost trajectory selected is the optimal selection when the vehicle is actually executed, and the safety and comfort of the navigation auxiliary driving system are improved.

The invention belongs to the technical field of ship navigation energy saving, and provides a sail navigation aid energy-saving efficiency evaluation method based on time calendar simulation. Navigation state monitoring data of a target ship sailing on a target route is read through a single-ship historical navigation database and an actual ship leg oil consumption record database constructed based on actual navigation data of the target ship, so that the navigation state monitoring data can truly reflect wind field characteristics and actual operation characteristics in navigation of the target ship; and data support is provided for subsequent calculation of sail navigation-aiding thrust. Time calendar simulation is carried out through a target sail stress model matched with the sail type so as to simulate the actual operation environment of the sail and calculate the navigation-aided thrust of the sail, the fuel-saving ratio of the sail is calculated according to the ship speed, the navigation-aided thrust, the main engine rotating speed, the unit operation fuel consumption rate and the actual fuel consumption, and the fuel-saving ratio of the sail is calculated according to the fuel-saving ratio. And evaluating the energy-saving efficiency of the sail on the target ship so as to improve the accuracy of evaluating the energy-saving efficiency of the sail.

A method, apparatus and computer program product are provided for generating lane line attributions for point locations along a road boundary for use in localization, map building, and map healing. Methods may include: receiving a sequence of geospatial observations from a vehicle traveling along a road segment; identifying, within the sequence of geospatial observations, lane line marking observations; determining, from the lane line marking observations, discrete points along the lane line markings, where the discrete points along the lane line markings include end points of a respective lane line marking; establishing a location of the vehicle based, at least in part, on the discrete points along the lane line markings; and providing for at least one of navigational assistance or at least semi-autonomous vehicle control based on the location established.

This invention relates to the technical field of water level information monitoring based on navigation aids, and discloses a method and device for water level information monitoring based on multi-intelligent sensor fusion of navigation aids. The method includes: using preprocessed multi-sensor data to perform a correction estimate of water depth based on a correction term to obtain the corrected water depth; performing position matching analysis between the location of the navigation aid vessel and its reference coordinates, and determining whether the location of the navigation aid vessel meets navigation standards based on the water depth; if the location of the navigation aid vessel does not meet navigation standards, generating an optimal adjustment path to drive the navigation aid vessel to the recommended location. This invention utilizes flow velocity, temperature, and attitude angle to construct a correction term, improving the accuracy of water depth estimation. It combines BeiDou position information with reference coordinates to determine whether the navigation aid vessel deviates from navigation standards. Once deviated, path planning drives the navigation aid vessel to adjust its position, achieving integrated water level monitoring and navigation aid management.

This invention relates to the field of navigation aid equipment technology, specifically to an adjustable anchor chain navigation aid based on buoyancy and a method for adjusting its turning radius. The adjustable anchor chain navigation aid includes a navigation aid body, a rope, and a boulder. The upper end of the rope is connected to the navigation aid body, and the lower end passes over a fixed pulley on the boulder and is connected to a retractable float. The retractable float includes a wear-resistant sleeve and a float assembly fixed to the side wall of the wear-resistant sleeve. The wear-resistant sleeve is fitted onto the rope between the navigation aid body and the fixed pulley. The lower end of the rope passes over the fixed pulley and is fixed to the wear-resistant sleeve. The turning radius of the navigation aid body can be adjusted by pulling the rope with the retractable float.

The application discloses a tree breast height auxiliary measurement system and method, and relates to the technical field of breast height measurement.The navigation auxiliary module loads the navigation file of the corresponding measurement area before the measurement personnel work, and then the current all trees in the to-be-measured state are selected as the target trees in sequence to perform the auxiliary navigation, so that the target loss problem caused by the dense trees in the measurement area is completely avoided, and the real-time longitude and latitude of the tree when any tree is determined as the target tree is acquired to determine whether there is a detour, a virtual auxiliary tree is selected in front of the tree according to the determination result, and when the next measurement task is performed again, a visual guide arrow is generated to navigate to the auxiliary tree first, and then navigate to the auxiliary tree, so that the navigation interference problem of the traditional navigation caused by the failure to identify the detour demand of the forest area is effectively avoided, and the safety of the auxiliary navigation is further improved.

The utility model discloses a movable helicopter field navigation aid lamp, which belongs to the technical field of navigation aid lamps and comprises a base, a storage battery box is mounted at the top of the base, a lamp body is arranged at the top of the storage battery box, and a moving component convenient for moving the lamp body is arranged at the bottom of the base. The base is provided with a stabilizing assembly for improving the using stability of the lamp body, and one end of the storage battery box is provided with a pushing assembly facilitating a worker to push the base to move. Therefore, when the device needs to be moved, a worker holds the U-shaped push rod to push the whole device to move, rotate the screw rod and lift the screw seat, so that the height of the U-shaped push rod can be adjusted, the requirements of workers with different heights are met, the worker does not need to stoop and squat, and the device is more comfortable and plays a role in protecting the waist.

The invention discloses an emergency navigation wristwatch and method for underwater deep cabin rescue operation of an overturned ship. The emergency navigation wristwatch comprises magnetic navigation nails arranged at rescue path nodes by a rescue diver, a back body carrying unit synchronously moving with the trunk of the diver, and a wristwatch worn on the wrist of the diver. The back body-mounted unit and the magnetic navigation nail realize path node identification and relative positioning through acoustic inquiry-response interaction, and navigation auxiliary information including node identification, relative distance, incoming wave direction parameters, signal quality parameters and attitude reference is sent to the wristwatch through the waterproof data line; the wristwatch and the back body-mounted unit carry out bidirectional data transmission through a waterproof data line, the wristwatch records node identifiers in the cabin entering stage to form a path node sequence, and outputs direction guide prompts according to the reverse sequence of the path node sequence in the turn-back stage, so that the safety and reliability of evacuation operation in the deep cabin wireless electromagnetic signal limited environment are improved.

The utility model provides a multifunctional navigation aid device which comprises a navigation aid assembly, a duckweed assembly and a power assembly. The duckweed assembly comprises a cabin body, a duckweed assembly and a balance weight part, the duckweed assembly is movably connected with the peripheral side of the cabin body, and the balance weight part is connected with the bottom of the cabin body; the navigation aiding assembly is arranged at the top of the cabin body; and the power assembly is arranged at the bottom of the cabin body. The multifunctional navigation aid device not only can resist sea surface storm waves, but also can automatically return to the original position when position deviation occurs.

The application provides a multifunctional navigation device, which comprises a navigation assembly, a duckweed assembly and a power assembly; the duckweed assembly comprises a cabin, a duckweed component and a counterweight, the duckweed component is movably connected with the periphery of the cabin, and the counterweight is connected with the bottom of the cabin; the navigation assembly is arranged on the top of the cabin; and the power assembly is arranged on the bottom of the cabin. The multifunctional navigation device can not only resist wind and waves on the sea surface, but also can automatically return to the original position when the position deviates.

The invention discloses a self-adaptive graph optimization method and system based on MEMS inertial navigation assisted PPP-RTK, and the method comprises the steps: collecting multi-system GNSS original observation data, PPP-RTK precise correction data and MEMS inertial navigation data in real time, and completing time synchronization of the data through a PPS mechanism; performing ionosphere, troposphere and orbit error correction on the GNSS observation value by using the precise correction data, and performing downsampling and pre-integration processing on inertial navigation data; gNSS signal quality and inertial navigation noise level are evaluated in real time, a Sigmoid function is used to calculate a comprehensive interference degree and map the comprehensive interference degree into an adaptive observation weight, and a dynamic information matrix is constructed; constructing a factor graph model containing an inertial navigation pre-integration factor, an adaptive GNSS observation factor and a prior factor; and solving optimal state estimation by adopting an incremental graph optimization algorithm based on a sliding window and marginalization technology. According to the method, by dynamically adjusting the observation weight and introducing inertial navigation strong constraint, the robustness of multi-source fusion positioning is remarkably improved, and continuous high-precision positioning in a complex scene is realized.

This invention relates to the field of navigation assistance technology, and in particular to a dynamic obstacle prediction and obstacle avoidance path planning method based on multi-sensor fusion. This invention achieves comprehensive perception of dynamic obstacles through multiple sensors, providing a rich and reliable data foundation for subsequent processing. At the same time, it predicts the motion of dynamic obstacles through data processing fusion and model prediction, fully considering the motion inertia of obstacles to make their trajectory prediction closer to real physical laws. Furthermore, by "delineating the final obstacle avoidance target area", the global path search problem is transformed into a local but sufficiently large spatial search problem, significantly reducing the number of grids to be processed and the amount of search computation, meeting the stringent real-time requirements of mobile devices. Moreover, by constructing a cost function, it avoids areas that obstacles may occupy in the future in real time, thereby generating an obstacle avoidance planning path, which helps to improve path safety.

Roughly described, a viewer application is provided for viewing a PDF document on a screen of a device such as a mobile phone or tablet. The viewer application may operate in page mode or in text mode. In page mode the original layout is maintained, and navigation assistance is provided by use of a navigation pane indicating the contents of the screen with a superimposed frame. Display of the navigation pane is controllable by the user. In page mode a selected text column is scrolled and zoomed to optimize reading. In text mode, text is extracted from the document and reformatted in text view to be continuous and complete in correct reading order, and images and advertising may be excluded. The user may toggle between page mode and text mode. The viewer application is implemented in software to by executed by a processor on the device.

A celestial exploration support program is disclosed. The program can execute, on a computing device, a hopping-path providing function that generates and provides to a user a hopping-path image in which hopping information including a hopping direction and an angular distance from a guiding star to a specific celestial object is reflected on a basic star chart image.

Methods and systems, including computer-readable media, are described for generating recommended shopping trips. A computing system captures individualized shopper preferences associated with a user that include budget constraints and dietary restrictions. The method includes generating a personalized list of shopping items based on the individualized shopper preferences using a predictive recommendation engine and identifying, based on in-store attributes and inventory status, sequences of multiple shopping locations. Each sequence provides access to the shopping items. The method includes rendering the identified sequences on a user interface with contextual navigation aids.

1. The name of the design product: LED navigation light. 2. The use of the design product: The design product is used for lighting lamps, with the purpose of navigation aid. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.