14results about How to "Precise Navigation" patented technology

The application discloses a three-dimensional terrain modeling analysis and adaptive navigation system and method, and relates to the technical field of navigation.The laser radar is used for acquiring point cloud data of the region where the device to be navigated is located in real time; the IMU is used for measuring the acceleration and angular velocity of the device to be navigated in real time; the data fusion sub-module is used for pre-processing the point cloud data, acceleration and angular velocity in real time, and fusing the pre-processed data; the three-dimensional map modeling sub-module is used for constructing a three-dimensional map model according to the point cloud data in real time by using a SLAM algorithm; the three-dimensional terrain analysis module is used for determining the terrain features of each point in the three-dimensional map model in real time; and the adaptive navigation module is used for planning a path for the device to be navigated according to the three-dimensional map model and the terrain features of each point, so that navigation is realized.The application can improve the precision of original data, and then improve the positioning precision, and realize accurate navigation.

The invention relates to an unmanned aerial vehicle intelligent path planning method and system based on visual signals, and belongs to the field of path planning. The method comprises the following steps: optimizing a neural network through progressive pruning; fuzzy coordinates and scene types are provided for the unmanned aerial vehicle, the unmanned aerial vehicle flies to a fuzzy coordinate area, and when the unmanned aerial vehicle is close to the fuzzy coordinate area, the unmanned aerial vehicle is switched to a pure vision mode to perform environment perception through a neural network, and a three-dimensional semantic map is constructed; performing real-time path planning based on the three-dimensional semantic map to obtain a flight path; the method comprises the following steps: performing autonomous flight along a flight path, when approaching an operation target, performing autonomous operation to obtain real-time monitoring data, storing the real-time monitoring data in airborne storage equipment, and returning the real-time monitoring data after returning. And an unmanned aerial vehicle intelligent path planning system with high robustness, high autonomy and high task adaptability is constructed.

This invention relates to the technical field of concealed pipeline mapping, and in particular to an auxiliary device for rapid three-dimensional coordinate positioning of concealed pipelines in installation projects. The invention includes a mother drone equipped with a probe and camera mounted on it. A marking nozzle is connected to the mother drone, and the marking nozzle is connected to and installed on a daughter drone. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable. The device uses a mother drone integrating a probe and camera, enabling multi-angle, omnidirectional spatial scanning and image acquisition of concealed pipelines. This achieves rapid and accurate three-dimensional coordinate positioning of the concealed pipelines, significantly improving the accuracy and reliability of the positioning. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable, enabling remote synchronous control. The daughter drone can flexibly move to the pipeline positioning point and automatically complete on-site marking, avoiding errors associated with traditional manual line drawing and improving the accuracy and consistency of the marking.

This invention belongs to the field of power technology, specifically disclosing a method, device, equipment, and medium for autonomous charging and navigation of unmanned aerial vehicles (UAVs). It includes the following steps: scanning environmental information to obtain LiDAR data; identifying charging station landmarks from the LiDAR data and establishing a coordinate system; processing the coordinate system using the ICP method to obtain pose gain; acquiring the odometer information corresponding to the pose gain; fusing the odometer information and pose gain using the extended Kalman filter method to obtain an estimated pose; and using the estimated pose as input for a PID control method to complete navigation. This invention, by applying landmark recognition and positioning navigation technology, replaces the traditional manual charging method, greatly reducing the need for human resources, lowering UAV charging costs, and improving charging efficiency.

In a method of creating an environment map for use in autonomous navigation of a mobile robot (10) in a map-based positioning system in a logistics environment, mobile objects (20, 200) of a goods management system having known positions are included into the environment map creation process.

The application relates to a navigation method, system, computer device, storage medium and computer program product. The method comprises the following steps: obtaining a target medical model, the target medical model being reconstructed based on an initial image scanned by a scanning device; generating operation planning information based on the target medical model; obtaining a real-time image scanned by the scanning device, and registering the real-time image with the target medical model to obtain a first registration relationship; obtaining a first coordinate relationship between a coordinate system corresponding to an execution tool and an image coordinate system of the real-time image; and navigating the execution tool based on the first coordinate relationship, the first registration relationship and the operation planning information. The method can model during operation, does not require preoperative CT, and realizes real-time registration without the need of adding additional markers.

The invention discloses an event-assisted unmanned aerial vehicle night precise landing system and method. The system comprises a high-frequency dynamic infrared sign array module, an event camera module, a pose resolving module and a landing control module. The system takes a high-frequency dynamic infrared mark array as a positioning reference, an event camera carried on the unmanned aerial vehicle captures an optical event flow with unique time sequence characteristics by accurately controlling the independent flicker frequency of each infrared light source, then the pose of the unmanned aerial vehicle is calculated by using an N-point perspective method, and finally accurate landing is realized by a landing control module. According to the invention, the event camera and the high-frequency dynamic infrared sign array are innovatively combined, the cooperative working mechanism of the event camera and the high-frequency dynamic infrared sign array is utilized, sub-millisecond-level positioning feedback is realized in a complex environment, the limitation of a traditional static optical sign is broken through, the positioning precision and reliability are improved, and the method is suitable for accurate take-off, landing and positioning of the unmanned aerial vehicle at night and in the complex environment.

The application relates to the field of biomedical materials, and particularly discloses a biological hybrid magnetic micromotor as well as a preparation method and application thereof. The preparation method of the biological hybrid magnetic micromotor comprises the following steps: reacting Chlorella vulgaris with ferrous sulfate, potassium hydroxide and potassium nitrate, magnetically separating the obtained reaction solution to obtain a solid, reacting the obtained solid with graphene oxide, and magnetically separating the obtained reaction solution to obtain the biological hybrid magnetic micromotor. The micromotor provided by the application can enhance the contact with a methylene blue solution under the action of a magnetic field, thereby showing higher adsorption efficiency in a short time. The micromotor adsorbed with the methylene blue can accurately navigate to a cell surface, and can generate reactive oxygen under the irradiation of a 664 nm laser and generate heat under the irradiation of an 808 nm laser to cooperatively induce cancer cell death. The application skillfully utilizes the adsorption performance and directional motion behavior of the micromotor, thereby providing a new idea for realizing cascade environmental purification and tumor treatment.

This invention relates to the field of inertial navigation technology, and particularly to a missile navigation method based on dual data link assistance. The method includes: a ground signal receiver acquiring the distance between the missile's position and the ground signal receiver at two adjacent moments via a data link; projecting the distances at the two moments onto the launch coordinate system to calculate the trajectory at each moment; converting the trajectory information to a geodetic rectangular coordinate system, and then to a geographic coordinate system; using the longitude, latitude, altitude, and heading angle in the geographic coordinate system, combined with the inertial navigation's azimuth velocity, eastward velocity, northward velocity, longitude, latitude, and altitude, as observations for Kalman filtering; correcting the missile's position information through Kalman filtering to obtain the final missile position; this invention employs a data link-assisted navigation system to ensure high-precision flight trajectory and attitude of the missile even when GPS is interfered with.

The utility model discloses an intelligent interactive walking assisting robot for a global scene, and relates to the technical field of artificial intelligence, robot technology and intelligent home furnishing, the intelligent interactive walking assisting robot comprises a chassis module, the upper end of the chassis module is respectively provided with an intelligent seat module and a mechanical arm module, and the chassis module comprises a chassis frame body; the intelligent seat module comprises a getting-up mechanism, a backrest adjusting mechanism and an interaction control mechanism; universal wheels are arranged at the four end corners of the bottom end of the chassis frame body, fixing frames are symmetrically installed at the center of the bottom end of the chassis frame body, a hub motor is fixed to the inner side of each fixing frame, and a driving wheel is fixed to the output end of each hub motor; the getting-up mechanism comprises an electric lifting column; the backrest adjusting mechanism comprises a cushion. The intelligent interaction walking assisting robot for the global scene provided by the utility model integrates the functions of voice recognition, stable movement and visual interaction, and aims to provide comprehensive intelligent service for home life.

The utility model discloses intelligent blind person navigation glasses, and belongs to the technical field of glasses. The glasses mainly comprise a glasses frame, lenses and glasses legs, and further comprise an intelligent auxiliary system module arranged on the glasses frame, and the intelligent auxiliary system module comprises a main control chip, a visual environment sensing module, a motion detection path navigation module, a language interaction module, a wireless communication remote connection module and a real-time feedback module. According to the intelligent blind person navigation glasses, all the modules are coordinated through the main control chip, visual perception, motion detection, language interaction, wireless communication and implementation feedback are combined, the effects of precise navigation, environment perception and real-time interaction are achieved, and higher navigation precision, safety and user experience are brought.

The invention relates to the technical field of charging stations, and discloses a movable charging station which comprises a base, a walking moving mechanism is installed on the base, a steering adjusting mechanism is installed above the walking moving mechanism, and a charging station assembly is installed on the steering adjusting mechanism. By integrating the walking moving mechanism and the steering adjusting mechanism, the mobile charging station can easily move among different places and adapt to various environmental conditions, so that the limitation of a traditional fixed or manual mobile charging station is overcome. The automatic moving and positioning functions reduce the dependence on manual operation, the labor cost is saved, and normal operation can be kept under the severe weather condition. Changes of charging requirements are quickly responded, and the position can be quickly adjusted according to the position of the user and the charging requirements, so that waiting time of the user is shortened, and user satisfaction is improved. The use efficiency and the user experience of the charging station are improved, and the charging station has good environmental adaptability and intellectualization characteristics.

This application provides a wearable device, belonging to the field of electronic technology. The wearable device includes: a main circuit board, a secondary circuit board, and a first GNSS antenna; the main circuit board and the secondary circuit board are stacked and spaced apart; the main circuit board has a feeding circuit, and the secondary circuit board has a grounding circuit; the first GNSS antenna has a feeding point and a grounding point, the feeding point being electrically connected to the feeding circuit, and the grounding point being electrically connected to the grounding circuit. In this wearable device, the first GNSS antenna is arranged between the main circuit board and the secondary circuit board, utilizing both circuit boards for feeding and grounding respectively. The first GNSS antenna does not need to share a frame structure with other antennas, has better clearance conditions, and possesses higher GNSS communication performance, thereby enabling the wearable device to achieve functions such as precise positioning, motion tracking, and navigation.

The invention relates to the technical field of fire-fighting remote monitoring systems, and provides a fire-fighting information management method based on the Internet of Things, and the method comprises the steps: collecting environment data and facility state data in real time through an Internet of Things sensing terminal, and transmitting the environment data and facility state data to an edge computing gateway; the edge computing gateway preprocesses the data and identifies fire features of video images; a processing result is transmitted to the cloud management platform for multi-source information fusion, and a fire-fighting situation map is constructed; the cloud management platform calculates a fire probability value by using an analysis model and judges a risk level; when the fire alarm level is reached, fire-fighting equipment linkage control is automatically triggered, a rescue route is generated in combination with a GIS, and the rescue route is pushed to a terminal, through edge calculation and cloud cooperation, early intelligent recognition and quick response of a fire disaster are achieved, the problems that traditional fire-fighting management lags behind, the false alarm rate is high, and data are isolated are effectively solved, and the fire-fighting management efficiency is improved. And the efficiency and reliability of fire control management are improved.