255 results about "Omni directional" patented technology

A broadband omni-directional bicone antenna. The antenna can comprise conductive surfaces of conical voids provided within a solid dielectric structure. The outside surface of the solid structure can support a radio frequency (RF) lens geometry operable for beam forming. The beam forming can modify the elevation pattern of the electromagnetic radiation from the bicone antenna. The solid dielectric structure may be machined or molded from a single piece of material. The conical voids provided within the solid structure can be metallized to provide conductive bicone radiators. The outer surface beam shaping lenses can be zoned or continuous and can provide elevation patterns with increased gain, cosecant squared falloff, or various other patterns. The beam shaping lens may be formed from any low-loss dielectric. Alternatively, the lens may be formed from a less dense material such as dielectric foam that can support radial conductive beam forming vanes.

The invention discloses a conference sound reinforcement system based on an AI intelligent algorithm and 360-degree omni-directional noise reduction, and relates to the technical field of audio signal processing, the conference sound reinforcement system comprises a conference management center, the conference management center is in communication connection with the following modules: a multi-sound-source sensing module used for capturing 360-degree omni-directional sound field information in a conference environment and constructing a sound source space distribution model; according to the invention, the omnidirectional microphone array unit covers all directions of a conference space, synchronously collects audio data streams, eliminates the limitation of a conventional unidirectional microphone, combines the sound source positioning space mapping unit, constructs a sound source space distribution model based on the time difference of arrival and the phase difference through a deep learning model, and improves the sound source positioning accuracy. The azimuth angle, pitch angle and distance parameters of the sound source are accurately analyzed, the position of the sound source is mapped to a virtual space coordinate system, a dynamically updated 3D sound source distribution diagram is generated, the position change and intensity distribution of the sound source are reflected in real time, and the positioning precision in a complex acoustic environment is remarkably improved.

A communication method including emitting laser pulses as a signal using one or more transmitters at an atmospheric point. Plasma is generated at the atmospheric point to radiate omnidirectional light. The plasma from the atmospheric point is detected using one or more receivers. The one or more receivers have a direct line-of-sight to the atmospheric point to receive the signal from the one or more transmitters via the omnidirectional light generated by the plasma. The signal is demodulated from the transmitted plasma at each receiver, thereby transmitting information encoded on the signal.

The invention relates to the field of mobile robots, in particular to a four-wheel omni-directional robot chassis navigation control device and method.The four-wheel omni-directional robot chassis navigation control device comprises a chassis structure and a driving system, a radar and a mechanical arm are arranged on the chassis structure, and omni-directional wheels are installed in the centers of the four side walls of the chassis structure; the axes of the omni-directional wheels are parallel to the edge of the chassis structure, the axes of the adjacent omni-directional wheels are perpendicular to each other, the diagonal direction of the chassis structure serves as the advancing direction of the robot, the advancing direction of the omni-directional wheels and the overall advancing direction of the chassis structure form an included angle of 45 degrees, and the driving system comprises four motors with Hall encoders. The four motors independently drive the independent omnidirectional wheels, the upper computer and the lower computer conduct instruction issuing and state feedback through UART serial port communication, and the problems that at the present stage, steering is conducted by depending on steering engine driving or positioning is conducted through a single sensor, the structure is complex, the anti-interference capacity is limited, and operation is complex are solved. And high precision is difficult to maintain in a dynamic environment.

A modular omnidirectional robotic system for navigating nonplanar structures including pipes, poles, chimneys, and trees. The system comprises multiple modules connected by hinges in an open C-shape configuration. Each module contains an omnidirectional drive mechanism with compliant treads, motors, batteries, and controllers. Adjustable tensioning mechanisms adapt to different structure diameters and enable both external and internal operation. The open configuration allows navigation around complex geometries including T-junctions, branches, and sharp bends by aligning the open section with obstructions. Sharp turns are negotiated using the leading edge of the drive mechanism as a pivot point. A control system coordinates module movement using sensors. The system operates on ferrous and non-ferrous materials, features an adaptable payload area for tools and sensors, and can be scaled by adding modules for larger structures.

The invention relates to the technical field of wireless communication perception, in particular to a user perception method based on a multi-layer intelligent omnidirectional metasurface, and proposes to realize accurate perception of reflection and refraction user orientations by utilizing heterogeneous characteristics of propagation paths on two sides of a multi-layer intelligent omnidirectional metasurface structure. Based on the architecture, a user reflection and refraction type judgment algorithm based on uplink pilot frequency information is provided, and the user reflection and refraction types are determined based on the heterogeneous characteristics of user channels on the two sides of the multi-layer intelligent omni-directional metasurface and based on least square optimization problem solving and target function size comparison. The propagation path angle estimation algorithm specifically comprises the following steps: firstly, based on uplink pilot frequency information, designing a channel estimation algorithm comprising alternating optimization, constant-rank manifold optimization, convex relaxation and other methods to estimate and obtain a channel matrix by utilizing channel constant-rank and angular domain sparse characteristics; and finally, based on a user type determination result, obtaining user angle information based on each channel matrix by using an orthogonal matching pursuit algorithm.

The invention discloses an omnidirectional space group target detection method based on micro-nano satellite group cooperation. The method comprises the following steps: carrying out observation configuration initialization on a micro-nano satellite group; establishing an intelligent detection model, and initializing observation star and decision star detection parameters and the intelligent detection model; the observation star performs target detection through the intelligent detection model to form a single-frame detection result; the decision-making star receives the single-frame detection result of each observation star to obtain summarized single-frame detection information; the decision star performs cross-view collaborative target association according to the summarized single-frame detection information, and updates a potential target list; and the decision star performs multi-view multi-frame collaborative target detection according to a single-frame detection result and the potential target list, updates a suspicious target list, and finally obtains suspicious target information. The method has the capability of autonomous information collaboration of seven micro-nano satellites, realizes omnibearing coverage target detection of a 4pi space above 200km, and has the capability of cross-view target association and multi-angle group target distinguishing during collaborative detection.

The invention discloses an omni-directional mobile robot pose adjustment method based on a laser radar, and the method comprises the steps: collecting and processing multi-frame laser radar data through a system to extract environment features in a working point creation stage after a robot is precisely guided to a target pose, and carrying out the correlation storage of a working point identifier, a global pose and standard feature data after verification. And when the robot navigates to a position near a working point, triggering an accurate adjustment process: calling pre-stored standard features by a system, collecting laser radar data in real time to perform same filtering and feature extraction processing, and performing iterative calculation through a point cloud matching algorithm to obtain X and Y direction and course angle deviations between a current position and a standard position. And finally, carrying out pose correction, and carrying out real-time cyclic feedback until the deviation reaches a millimeter-level precision threshold value. According to the invention, the dependence of a traditional two-dimensional code accurate positioning scheme on illumination, cleanliness and entity marking is overcome, and the method has the advantages of high precision, strong environmental adaptability and high reliability.

The invention relates to the technical field of automobile chassis dynamics control, and discloses a hydrogen energy heavy truck omnidirectional degree-of-freedom optimization method, which comprises the following steps: acquiring multi-source sensor data and hydrogen fuel cell system state data of a hydrogen energy heavy truck, and executing time synchronization and noise preprocessing; carrying out real-time identification on the key state parameters of the vehicle by utilizing a nineteen-degree-of-freedom vehicle dynamics model and a self-adaptive filtering algorithm; a layered omnidirectional coordination control architecture is constructed and comprises a main control layer, a scheduling layer and an execution layer, and the main control layer generates a global motion control target; carrying out multi-objective optimization solution on the scheduling layer, and calculating to obtain an expected acting force distribution instruction; and the execution layer converts the instruction into a bottom layer execution control signal and drives the subsystems to cooperatively act so as to realize omni-directional degree-of-freedom optimization control. According to the invention, the limitations of poor coordination and difficulty in multi-target optimization caused by independent control of subsystems of a traditional chassis can be broken through, and accurate control of the hydrogen energy heavy truck under complex working conditions is realized.

The invention provides a trajectory tracking control method and system for a high-load omni-directional AGV, the omni-directional AGV is driven by a plurality of steering wheel mechanisms which are independently steered and driven, and the trajectory tracking control method is characterized by comprising the following steps: acquiring vehicle state information and expected trajectory information of the omni-directional AGV in real time; on the basis of the vehicle state information and the expected track information, core parameters of a model prediction controller are optimized online through a chaos simulated annealing algorithm, and the core parameters comprise a state weight matrix, a control increment weight matrix, a prediction time domain and a control time domain; wherein the model prediction controller performs state prediction based on a longitudinal-transverse decoupling dynamic model adaptive to a high-load working condition; performing rolling horizon optimization through the model prediction controller by utilizing the optimized core parameters, and solving to obtain an optimal control increment; and converting the optimal control increment into a driving instruction for a multi-steering-wheel mechanism, and controlling the omnidirectional AGV to track an expected trajectory.

A method and device for performing a perception task are disclosed. The method and device incorporate a dense regression model. The dense regression model advantageously incorporates a distortion-free convolution technique that is designed to accommodate and appropriately handle the varying levels of distortion in omnidirectional images across different regions. In addition to distortion-free convolution, the dense regression model further utilizes a transformer that incorporates an spherical self-attention that use distortion-free image embedding to compute an appearance attention and uses spherical distance to compute a positional attention.

The invention discloses a salamander-imitating robot omni-directional motion control method and system based on reinforcement learning, and belongs to the field of electromechanical system control. The method comprises the following steps: acquiring robot state information and a motion instruction; a periodic phase variable is generated through a phase integration module, and target actions of all joints are output through a track generator; designing a reward function based on behavior constraint, and constraining motion directivity and attitude stability; the morphological symmetry of the body structure of the salamander-imitating robot is utilized to symmetrically enhance the state-action sample so as to expand training data; and a reinforcement learning algorithm is adopted, and a stable and efficient omnidirectional motion control model is obtained according to a reward feedback and symmetric enhancement data iteration updating control strategy. The method can realize the generation of the omni-directional motion strategy driven by reinforcement learning without presetting a gait model, has the advantages of natural motion mode, high control precision and strong adaptability, and can be widely applied to the fields of complex terrain detection, intelligent inspection and the like.

The invention relates to an omnidirectional mobile robot dog autonomous obstacle avoidance and state monitoring method for a track fork, and relates to the field of machine vision, and the method comprises the steps: constructing a prior three-dimensional map containing semantic information through multi-sensor fusion; precise real-time positioning is realized based on feature matching and an ICP algorithm, and a global optimal path considering distance, coverage and energy consumption is planned by using the improved A; an omnidirectional obstacle avoidance strategy is started through obstacle recognition and risk assessment in the advancing process, and the moving mode is dynamically adjusted; and when arriving at a detection point, adaptively adjusting an observation pose, fusing visual data, infrared data and three-dimensional data, and realizing automatic identification and diagnosis of the apparent defect of the turnout by means of a deep learning model. The system and the method have the advantages that full-process autonomous inspection of the track crossroad is realized by means of multi-sensor fusion and an intelligent algorithm, the system and the method have the capabilities of accurate positioning, flexible obstacle avoidance and comprehensive and efficient defect detection, the system and the method are adaptive to complex scenes, and manual dependence is greatly reduced.

The invention discloses an omni-directional bouncing robot capable of automatically triggering and releasing rope pulling stored force, and relates to the field of robots. An existing bouncing robot adopts a connecting rod transmission mechanism, so that the whole bouncing robot is heavy, and light-weight and compact design is not facilitated. The feet of the device can be supported on the ground; the supporting seat is positioned above the foot part; one end of the ejection mechanism is connected with the supporting seat, and the other end is movably connected with the foot part; the at least two rope driving mechanisms are uniformly distributed around the ejection mechanism, each rope driving mechanism comprises a winding roller, a rope and a first driving motor, the winding roller is rotatably mounted on the supporting seat, the first driving motor is slidably mounted on the supporting seat and can drive the winding roller to rotate, one end of the rope is wound on the winding roller, and the other end of the rope is connected with the foot part; in the process that the winding roller is driven by the first driving motor to wind the rope, the ejection mechanism continuously accumulates force until the ejection mechanism triggers the first driving motor to be separated from the winding roller, the rope is loosened, and the ejection mechanism releases the stored elastic potential energy, so that the ejection mechanism drives the foot to bounce.

The present disclosure provides an omnidirectional ceiling antenna and an electronic device, and belongs to the technical field of communication. The omnidirectional ceiling antenna comprises a reflecting plate and a radiation structure arranged on the reflecting plate; the plane where the reflecting layer and the radiation structure are located has a certain included angle; the radiation structure comprises a first dielectric substrate and a radiation component arranged on the first dielectric substrate, and the radiation component comprises a radiation part; wherein the radiation part has at least one first slot part, and the orthographic projection of the first slot part on the first dielectric substrate is in a spiral shape; and / or the radiation component further comprises at least one first stub arranged on the first dielectric substrate and coupled with the radiation part.

The invention discloses an omni-directional ocean current energy capturing device based on a friction nanometer generator. The omni-directional ocean current energy capturing device comprises a device shell, a base, an elastic supporting rod and a plurality of friction nanometer power generation units. A closed cavity is formed in the device shell; the two ends of the elastic supporting rod are fixedly connected with the base and the device shell. The multiple friction nanometer power generation units are evenly distributed on the inner wall of the closed cavity of the device shell in the circumferential direction. When the energy capturing device is placed in water, the device shell is suspended in the water under the traction of the base and the elastic supporting rod, and the device shell swings in a reciprocating mode under the traction of the elastic supporting rod under the driving of water flow, so that the friction layer and the first electrode layer make contact with each other in a reciprocating mode and are separated from each other. The omni-directional ocean current energy capturing device based on the friction nano-generator disclosed by the invention has the advantages of omni-directivity, simple and reliable structure and high energy conversion efficiency, and is particularly suitable for capturing and converting low-frequency and multi-directional ocean current energy in an ocean environment.

The invention provides a method and a system for self-calibrating an omnidirectional radiation field. The method comprises the following steps: generating a 3D Gaussian as an initial representation of an omnidirectional radiation field based on an acquired 360-degree image; rasterizing the 3D gauss into a 2D omnidirectional image, the rasterizing comprising sputtering the 3D gauss onto a unit spherical surface and expanding the 3D gauss into an equirectangular projected 2D omnidirectional image; the 360-degree image is resampled based on an omnidirectional camera model, an undistorted image is obtained, and the omnidirectional camera model is constructed based on a fixed spherical grid structure and a trainable focal length coefficient and an angle distortion coefficient; the 3D Gaussian, camera pose, and the omnidirectional camera model are jointly optimized by minimizing the loss of luminosity between the 2D omnidirectional image and the undistorted image.

The invention discloses a force-position coupling control method and system for a magnetic-pneumatic suspension servo device, and relates to the technical field of ground microgravity experiments of space mechanisms. After the sling inclination angle detection device is used for detecting the angle of the sling deviating from the numerical direction, the position following controller drives the omni-directional wheel to conduct position correction based on deflection angle feedback, meanwhile, the constant force compensation controller drives the constant force compensation motor to conduct tension adjustment through the deflection angle feedback and tension feedback, and therefore higher-precision gravity unloading is achieved.

This invention relates to beam switching following a Listen-After-Speak (LBT) procedure. Apparatus, methods, and systems for performing beam switching after an LBT procedure are disclosed. One apparatus (500) includes a processor (505) and a transceiver (525) operable on unlicensed spectrum, wherein the transceiver (525) supports multiple device panels. The processor (505) performs (805) a first Listen-After-Speak (“LBT”) procedure using omnidirectional sensing to obtain a first Channel Occupancy Time (“COT”), and in response to a successful LBT, performs (810) a first uplink transmission of a first Transport Block (“TB”) during the first COT and using a first device panel. Here, the first uplink transmission uses a first portion of the first COT. The processor (505) performs (815) a directed LBT procedure for a second device panel to obtain the remainder of the first COT.

The invention relates to the technical field of image processing, in particular to a bacterial colony counting method based on color space clustering and omni-directional gradient scanning, which is based on an asymmetric clustering model of an HSV color space and combines with an optimized K-means algorithm to realize accurate separation of bacterial colonies and complex backgrounds. Then constructing a geometric center identification system, and predicting all possible colony centers as seed points by using Euclidean distance transformation and a dynamic threshold adjustment mechanism; further, through target class screening evaluation of omnidirectional gradient scanning, a target irregular bacterial colony area is screened out; and finally, introducing a watershed distance-edge constraint algorithm to realize accurate segmentation of high-density bacterial colonies. The reliability of the counting result is ensured through mass center coordinate verification and result visualization optimization. According to the method, the recognition capability of semitransparent bacterial colonies and edge fuzzy targets is remarkably improved, the stable counting performance is still kept under the scene of complex illumination and high-density bacterial colonies, the manual intervention requirement is greatly reduced, and the detection efficiency and the automation level are improved.

An antenna comprises a radially symmetric dielectric unit. A first conducting surface has one of a convex and a concave surface on a first radially interior surface of the dielectric unit. A second conducting surface extends radially outward from an axis of radial symmetry. The second conducting surface is oblique to the axis of radial symmetry. A non-conducting aperture on a radial exterior of the dielectric unit, wherein the first conducting surface and the second conducting surface define a dielectric volume extending radially toward and terminating in the non-conducting aperture.

The application relates to the technical field of data processing, in particular to an audio acquisition method, an electronic device and a storage medium. The audio acquisition method of the application uses an acoustic vector sensor (AVS) array with directivity as a pickup device, which is better than an omnidirectional microphone array, to acquire voice signals in a space, wherein each AVS in the AVS array comprises an omnidirectional microphone and a directional microphone, then the weights of the voice signals acquired by the omnidirectional microphone and the directional microphone in each AVS are adjusted according to a target direction, the voice signals of each AVS after enhancement in the target direction are obtained, then a designed super-directivity beamformer is applied to the enhanced signals acquired by each AVS for further enhancement processing, and the voice signals of the entire AVS array after enhancement in the target direction are obtained.

An autonomous mobile platform (100) is disclosed. It comprises a loading platform (10), an upper chassis (20), a lower chassis (30), two centrally positioned independently powered drive wheels (51, 61) with suspension means, a set of omni-wheels (70), a rotating plate (80) and a set of lifting means (40). The synchronous engagement of all lifting means (40) in one direction lifts the connected chassis (20, 30) towards the loading platform (10) and leaves the autonomous mobile platform (100) anchored on their anchoring legs (15) on the floor. The opposite action brings the platform wheels to the floor. The propelling and steering of the platform (100) are performed by the coordinated actions of the rotating plate (80), together with a separate independent rotation of the drive wheels (51, 61), and free rotation of the omni-wheels (70) on the floor. The platform is designed for carrying surgical equipment, especially surgical robots.

The application belongs to the technical field of antenna in the communication system comprehensive design, and particularly relates to a kind of omnidirectional broadband antenna based on multimode resonance, L-shaped folded dipole, rectangular loop, U-shaped branch and SMA joint are located at the lower surface of dielectric substrate, feed line is located at the upper surface of dielectric substrate, first metallized via hole and second metallized via hole in the up-down direction are opened on dielectric substrate, the outer conductor of SMA joint is connected with the right arm of L-shaped folded dipole, the inner conductor of SMA joint is connected with one end of feed line by passing through the right arm of L-shaped folded dipole and first metallized via hole, the other end of feed line is connected with the left arm of L-shaped folded dipole by passing through second metallized via hole, the application generates new resonance frequency by bending traditional dipole to form L-shaped folded dipole;rectangular loop is added around L-shaped folded dipole, two new resonance modes are introduced, and the bandwidth of antenna is further widened.

An omnidirectional mechanical drive unit in a robot may be controlled by a processor. An input message characterizing a physical force exerted on a force sensor in a first direction may be received. A physical force input vector quantifying the physical force in two or more dimensions may be determined based on the input message. Upon determining that a triggering condition for navigational feedback is satisfied, a haptic force input vector for provide haptic navigational feedback via the omnidirectional mechanical drive unit may be determined. A force output vector aggregating the physical force input vector and the haptic force input vector may be determined. The force output vector may quantify a force to apply to move the robot in a second direction. An indication of the force output vector may be transmitted to the omnidirectional mechanical drive unit. The robot may be moved based on the force output vector.

The present application relates to the field of communication radar, in particular to a kind of omnidirectional correlation interferometer real-time direction finding method and system based on spread spectrum signal;Construct omnidirectional antenna array;Utilize radio frequency channel time-sharing switching and receive the array signal of single array plane currently working, obtain baseband signal;A set of fixed base line is distributed to the uniform circular array in the array plane currently working;Based on the pseudo-random code matching the spread spectrum signal generated locally and received, each way of baseband signal is carried out correlation despreading, and the phase difference corresponding to each base line is obtained;The phase difference obtained is input into the phase difference sample library established in advance to carry out matching, calculates similarity function, and the angle stored in the phase difference sample library corresponding to the maximum value of similarity function is determined as the measurement direction angle;The measurement direction angle is carried out data processing, and the optimized measurement direction angle is obtained;The method of the present application has the advantages of full-space coverage, low cost, direction finding precision and tracking precision.

The utility model discloses a lawn cleaning robot, include: robot main body, mechanical arm structure, lower layer clamp jaw, camera, dustbin, radar, omni -wheel, control unit, GNSS positioning module and IMU, the mechanical arm structure is controlled to a plurality of rudders, makes the mechanical arm structure realize to lift or put down action on the robot main body upper end, and realizes rotating action, is equipped with upper layer clamp jaw in the foremost end of this mechanical arm structure, and this upper layer clamp jaw is controlled to the first rudder, realizes clamping or release, the lower layer clamp jaw is controlled to the sixth rudder, realizes clamping or release, the camera is controlled to the fifth rudder, realizes rotation, has ROS robot operating system and existing identification algorithm YOLOV11 on the control unit deployment.

The application discloses a kind of high-precision omnidirectional vision positioning control systems based on laser cutting, including first cylinder, first lifting frame and rotating plate, the output end of the first cylinder is installed with first lifting frame, the bottom of the first lifting frame is symmetrically installed with multiple first mounting rods, the inside of the first mounting rod is through active installation with rotating plate, the top of the rotating plate is installed with camera, the top of the first lifting frame is installed with multiple second cylinder, the output end of the second cylinder is installed with second lifting frame.The first cylinder can drive the first lifting frame to move up and down, while the second cylinder drives the second lifting frame to move up and down, the rotating plate can rotate up and down when the second lifting frame moves up and down, so that the camera on the rotating plate can change the inclination angle, and then the camera can monitor the cutting head of cutting machine at different inclination angles at different heights, so that the monitoring of cutting head is more comprehensive.

The utility model discloses a ship submarine organism cleaning robot, including main body frame, mobile system, cleaning execution system, adsorption balance system and identification system. Mobile system is by multi -freedom degree mechanical leg and the constitution of the Mecanum wheel, realizes the omni -directional movement on complex surface. The cleaning execution system is by rough cleaning wheel and fine cleaning wheel composition, through the gear set and transmission chain synchronous drive, utilizes the speed difference and spring pressure adjusting assembly to realize grading high -efficient cleaning. Adsorption balance system is by electromagnet, counter -thrust rudder and compressed air bag constitute, and cooperatively provide stable adhesion and attitude control. The identification system includes camera, LED lamp and main control unit, can intelligent identification ship body attachment and dynamic adjustment cleaning strategy. The utility model can be stable operation in underwater complex environment, realizes the efficient, accurate cleaning of the attachment such as acorn barnacle, algae, improves the ship operation efficiency and prolongs the service life.

A robotic platform apparatus can include a chassis with a front edge, a rear edge, and a top surface. The robotic platform apparatus can include multiple omnidirectional wheels coupled to the chassis. The robotic platform apparatus can include a brake system comprising multiple lifting legs. The lifting legs can be configured to extend until the lifting legs make contact with a surface below the robotic platform apparatus and lift the omnidirectional wheels off the surface. An air bag can expand to extend the lifting legs. The robotic platform apparatus can include a processor configured to control the path of travel and operation of the brake system.