109 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.

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.

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.

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 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.

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.

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.

The utility model provides a damping installation structure of a runway navigational aid lamp, which relates to the technical field of runway navigational aid lamp installation and comprises an installation frame, a damping device and a damping device. A light-emitting element is arranged in the middle of the lampshade, the periphery of the lampshade is sleeved with an elastic washer, the lampshade makes contact with the mounting frame through the elastic washer, and at least part of the lampshade is arranged in the mounting hole; the pressing ring is arranged on the side, away from the mounting frame, of the elastic gasket, and the pressing ring is connected with the mounting frame and tightly presses the elastic gasket; the problems that in the prior art, a damping pad or a damping sleeve is arranged at the bottom of a mounting frame of a runway navigation aid lamp, the damping effect is limited, and the light source breakage rate is high are solved.

A method of providing navigational assistance includes: obtaining position information of an aerial vehicle relative to a defined path; calculating an intercept angle for the aerial vehicle to direct the aerial vehicle to a preferred track angle; generating a 3-D perspective projection synthetic view window depicts differences in three dimensions between a point on a defined path and the aerial vehicle at a latitude, longitude, altitude, and a given viewing angle. The 3-D perspective projection synthetic view window includes: a graphical depiction of the defined path through a subsequent waypoint, and a 3-D tactical navigational symbol that includes a preferred intercept angle symbol that is positioned relative to the graphical depiction of the defined path based on the preferred track angle and the intercept angle. The method further includes displaying the 3-D perspective projection synthetic view window on a display device for use in navigating the aerial vehicle.

Provided is a navigation support system. The navigation support system includes: a camera installed on a ship and configured to acquire an image including an object at sea; an orientation sensor configured to detect a bow direction of the ship; an object sensor configured to detect a position of the object; processing circuitry configured to recognize a region of the object in the image, and calculate a difference between a capturing direction of the camera and the bow direction based on a horizontal in-image position of the object in the image and a direction of the object with reference to the ship.

The invention relates to an AI-assisted lumbar intervertebral disc resection visual navigation device with a postoperative care monitoring function, and belongs to the technical field of medical equipment.The AI-assisted lumbar intervertebral disc resection visual navigation device comprises an AI assisting module, a visual navigation module, a postoperative care monitoring module and a data processing and transmission module, and the AI assisting module is internally provided with an image recognition model and a risk prediction model; the system is used for performing lesion recognition and positioning on image data of a patient before an operation, performing operation risk assessment in combination with multi-source information of the patient, and overlapping and displaying the operation risk in a three-dimensional model to realize real-time navigation in the operation, the AI auxiliary module realizes accurate lesion positioning and risk quantitative assessment, and the visual navigation module provides real-time guidance with the precision smaller than or equal to 0.5 mm. The postoperative nursing monitoring module achieves all-around real-time monitoring of physiological parameters, wound states and rehabilitation training, and the abnormity early warning subunit discovers the risks in time and treats suggestions in a grading mode to improve nursing pertinence.

[Problem] To provide a channel marker identification device that can increase the identification accuracy for marker contents. [Solution] A channel marker identification device provided with: a first acquisition unit for acquiring a first image that includes a buoy from a camera installed in a ship; a first identification unit for identifying the position of the buoy in the first image; a second acquisition unit for acquiring a second image having a higher resolution than that of the first image and corresponding to a partial area of the first image which includes the position of the buoy; and a second identification unit for identifying marker contents of the buoy from the second image.

The application discloses a BLS-based NAVTEX message context intelligent decision support method, applies data cleaning, word type reduction and reference stop word operations to NAVTEX message data, and proposes a message context label to mark the categories of the message, which specifically shows that the message content contained in the navigation warning is analyzed, and six categories of message context labels are summarized.Through the application, effective information in the original message data can be accurately extracted, and strong support is provided for subsequent message context classification tasks and navigation decision support, so that the trained message features are more concise and representative.The application is based on BLS and is improved, the accuracy of the NAVTEX message context classification is improved, intelligent navigation decision support services are provided for the mariners, the working strength can be effectively reduced and the working efficiency can be improved, meanwhile, the safety navigation performance of the ship is further enhanced, and the function of the navigation aid equipment is enriched.

The utility model mainly provides a duckweed assembly which comprises a cabin body, a duckweed assembly and a balance weight piece, the duckweed assembly is movably connected with the peripheral side of the cabin body, and the balance weight piece is connected with the bottom of the cabin body; the navigation aiding assembly is arranged on the top of the cabin body. The duckweed assembly can well help the marine navigation aid mark to resist storm waves so as to keep stability.

The present invention relates to a mobile surgical assistance device for the on-demand loading, unloading, and disposal of medical products for a medical treatment room, in particular sterile disposable systems for an operating room, comprising: a housing; a plurality of storage modules arranged in the housing and designed for on-demand configurable loading and unloading of medical products; a plurality of disposal modules corresponding to the storage modules, designed for the disposal and / or selective disposal of used medical products; and a navigation aid designed for navigating the surgical assistance device between and within medical treatment rooms, in particular sterile operating rooms.Furthermore, the present invention relates to the use of a ceiling-mounted or floor-mounted support system for such a mobile surgical assistance device and a method for the on-demand loading, unloading and disposal of medical products for a medical treatment room.