35 results about "Motion barrier" patented technology

In an autonomous driving system in which a plurality of autonomous driving vehicles drive under the control by occlusion control, such a situation is prevented that a vehicle is disabled to drive by a failure of an external world sensor for recognizing an obstacle and stops in an occlusion region thereby to obstruct advancement of overall succeeding vehicles to remarkably degrade the efficiency of the overall transportation work. In the autonomous driving system of the present invention, an autonomous driving vehicle which detects an obstacle or a driving road by a sensor and performs autonomous driving includes sensor state evaluation means configured to evaluate a state of performance degradation of the sensor, speed and steering angle control value setting means configured to provide limit values to the driving speed and the steering angle based on a state of performance degradation of the sensor, and movement obstacle evaluation means configured to evaluate an influence on movement of other vehicles when the vehicle stops at a position at present. When the sensor suffers from performance degradation, the vehicle stops after it drives within the set limit values to the speed and the steering angle to a point at which the vehicle does not obstruct movement of other vehicles.

A system and method for providing therapy and assessment utilizing vibrotactile feedback is disclosed. Such treatment is useful for the assessment and treatment of disequilibrium, movement and balance disorders. The system and method measures a subject's performance of predetermined tasks with respect to expected parameters using sensors such as force plates, inertial sensors, and three dimensional cameras. Predetermined motions are motions such as stand, sit-to-stand, reach, bend, functional gait, functional gait plus headshake, and other functional tasks. Vibrotactile stimulation may be applied during the subject's performance as disruptive input. Variance and rate of change of variance between measured and expected parameters is used as a tool for assessment of said subject, and is also used for providing real-time vibrotactile training to said subject. The invention is useful in the treatment of Traumatic Brain Injury (TBI), neurologic disorders causing disequilibrium and balance disorders, and the like.

The invention relates to a UUV three-dimension sea route planning method in a moving obstacle environment. The method is characterized by comprising the following steps: step 1, establishing a UUV three-dimension obstacle avoidance cost function by calculating the time when a UUV encounters a fixed obstacle and a moving obstacle; step 2, establishing a UUV three-dimension target-approaching cost function by calculating the angle relation between the heading direction of the UUV and the target direction; and step 3, establishing a UUV three-dimension sea route planning cost function by combining the UUV three-dimension obstacle avoidance cost function and the UUV three-dimension target-approaching cost function.

The invention discloses a motion obstacle detection and positioning method based on depth images and relates to a motion obstacle detection and positioning method based on binocular vision depth images. The method aims to solve the problems of an existing vision-based obstacle detection and positioning method that the calculation amount is large, instantaneity is poor, and it is difficult to distinguish obstacles and surroundings with similar image features. According to the method, the depth images are collected through binocular cameras configured in parallel, and denoising, binarization andother processing are performed on the depth images to obtain contours of candidate obstacles in the images; then the locations of the candidate obstacles are transferred into a local geographic coordinate system, and specific location interference is removed in combination with a spatial location relation; and a Kalman filtering mode is used to estimate the motion states of the obstacles so as toimprove the positioning accuracy of the obstacles. The method is suitable for motion obstacle detection and positioning based on the binocular vision depth images.

The invention discloses an evading method based on opposite-direction sailing of a virtual puffed motion obstacle and a UUV. The invention is aimed to solve the problem that the opposite direction sailing motion obstacle evading method which is currently adopted is hard to accurately predict the motion sate of the motion obstacle. The invention determines that the UUV and the motion obstacle sail in the opposite directions according to the fact that the included angle between the motion obstacle course and the guidance course is headAngle; when the UUV and the motion obstacle are detected to be sailed in the opposite directions, the motion obstacle generates a rectangle virtual obstacle after circular puffing, and the measurement distance of the waterway planning algorithm is calculated and triggered; when the straight line distance M between UUV and the motion obstacle center point satisfies M<nextL, the waterway planning algorithm is triggered to calculate the measurement distance nextL of the next time triggered plan until the waterway planning algorithm is not triggered anymore. The invention is applicable to the UUV motion obstacle evading field.

The invention discloses an evading method based on same direction sailing of a virtual puffed motion obstacle and a UUV. The invention is aimed to solve the problem that the opposite direction sailing motion obstacle evading method which is currently adopted is hard to accurately predict the motion sate of the motion obstacle. The evading method determines that the UVV and the motion obstacle sail in the same direction according to the included angle of the motion obstacle course and a guidance course; the same direction sailing has two position relations: the UUV pursues and attacks the motion obstacle and the motion obstacle pursues and attacks the UUV; when the UUV pursuits and attacks the motion obstacle, puffing and a rectangle virtual obstacle are adopted to adjust the heading of the UUV in order to evade the motion obstacle; when the obstacle pursuits and attacks the UUV, UUV constantly adjusts the motion speed according to the change of the relative position of the UUV and the motion obstacle, and the puffing and the rectangle virtual obstacle are adopted to adjust the heading of the UUV to evade the obstacle. The invention is applicable to the motion obstacle evading of the UUV.

The invention relates to the fields of rehabilitation engineering, neural engineering and dyskinesia mechanism research, in particular to an electroencephalogram and electromyogram synchronous acquisition and information transfer characteristic analysis method. The method includes an electroencephalogram and electromyogram synchronous acquisition step and a signal processing step, the electroencephalogram and electromyogram synchronous acquisition step includes electroencephalogram acquisition and electromyogram acquisition, and the signal processing step includes signal preprocessing and an electroencephalogram and electromyogram transfer characteristic analysis method. The method has applicability and adoptability and has significant application value in the rehabilitation medicine field.

The invention discloses a man-machine moving obstacle monitoring method, a readable storage medium and an unmanned aerial vehicle. The method comprises a step of obtaining obstacle features of an obstacle through different sensors and building frame models based on the obstacle features to recognize the obstacle, a step of fusing the obstacle recognition results of different sensors to construct an obstacle motion state model and tracking the obstacle based on the obstacle motion state model. According to the embodiment of the invention, the frame models are established based on the obstacle features to identify the obstacle, the obstacle recognition results of different sensors are fused to construct the obstacle motion state model, and the obstacle is tracked based on the obstacle motionstate model, so that the unmanned aerial vehicle can effectively recognize, track and monitor the moving obstacle in a flight process, and a three-dimensional obstacle avoidance path of the unmannedaerial vehicle is planned in real time.

The invention provides an electro-plastic friction stir spot welding device, which comprises a stir sleeve, a stir needle in the stir sleeve, a clamping sleeve clamped outside the stir sleeve, and a welding cushion block, wherein two radial opening grooves are formed in the bottom of the clamping sleeve and the top of the welding cushion block respectively; electric brushes are mounted in the grooves; and the grooves are matched with the conductive blocks in the electric brushes in shape. The invention further provides an electro-plastic friction stir spot welding method, which comprises the steps of carrying out plastic softening on a metal material, communicating the two electric brushes with a direct current independently and respectively while compacting a welding workpiece by the clamping sleeve, enabling the polarities of the two electric brushes on the same horizontal plane to be opposite and the polarities of the two electric brushes on the same vertical plane to be the same, connecting a welding circuit, and finishing the welding operation by adopting a spot welding process. According to the invention, a high-density current is applied to the metal deformation direction by utilizing the electro-plastic effect of the metal material, so that the metal dislocation is promoted, the motion defect is overcome, the plastic flow capability of the metal material is improved, and the welding quality is improved.

The invention relates to the field of medical instruments and in particular to an active-passive integrated exercise device comprising an upper limb rehabilitation component, a lower limb rehabilitation component and a driving device, wherein the upper limb rehabilitation component, the lower limb rehabilitation component and the driving device are all disposed on a bracket; and the driving devicesimultaneously drives the upper limb rehabilitation component and the lower limb rehabilitation component to operate through a transmission component. The exercise device of the invention can realizethe integration of the active exercise and the passive exercise by using the driving device to drive a user to perform simple exercises. Compared with the active exercise by the patient, the passiveexercise is safer, does not cause sport injury, and reduces the possibility of further injury of the user. The active-passive integrated exercise device is very suitable for the elderly and patientsdisabled in mobility, assists the effective physical exercise of patients with congenital dyskinesia, solves the problems that a rehabilitation device in the prior art requires the active exercise ofthe patient, is likely to cause damage to the patient, and is not as safe as the passive exercise or as wide as the passive exercise in applicability.

The container for medical ophthalmic preparations has an exit opening which is formed in an arcuate indentation of the container wall that passes at both sides into a respective arcuate bulge. The container is placed with said wave-like container wall on the area of the eyebrow and cheekbones, the indentation making sure that there is no contact with the surface of the eye. A protective cap for a conventional container for medical ophthalmic preparations has a corresponding wave-like contour. Said contour ensures a safety distance from the eye, which excludes any injuries. The container and the protective cap can be handled easily in the case of a self-administration of the eye drops—even by persons with motoric disorders.

The invention relates to a modular knee joint of a lower limb rehabilitation training robot, and belongs to the field of service robots. The anthropomorphic design of a two-connecting rod series mechanism and a rotating mechanism is adopted; two connecting rods are adjustable connecting rods. The compatibility between different human body sizes and a system device is fully considered; patients canadjust a clamping buckle position arbitrarily according to the comfort level. The modular knee joint is internally equipped with double limit links, namely mechanical limit and electrical limit, andthe safety during system operation is ensured. The whole machine control module adopts three-level layered placement, has the advantages of high integration level, strong functional expansibility, wide range of versatility and easy replacement and maintenance. At the same time, electrical lines can be isolated and protected, and a hollow routing mode is adopted for a routing mode. The modular kneejoint has the advantages of compact structure, high integration level, strong expansibility, convenient installation, convenient maintenance and stable and reliable use during use, and carries out function rehabilitation training of motion functions for patients with motion disorder.

The invention discloses a finger flexibility detection method based on recognition of operation behaviors of a smart mobile terminal. According to the method, interactive behavior data between a userand the smart mobile terminal are collected, geometrical characteristics of the palm, flexibility characteristics of fingers and the like are extracted, and accordingly, the finger flexibility of thecurrent user of the smart mobile terminal is detected and determined. The finger flexibility detection method has the advantages that the method based on an smart mobile terminal platform can conveniently and accurately detect the user's finger flexibility without increasing any burden to the user; the method can be applied to detection of early symptoms of Parkinson's disease and to initial detection of other dyskinesia diseases, thereby having extremely high applicability and broad promotion prospect.

The invention discloses a monitoring system for human motion. The system comprises a signal generator, a laser, a first conduction optical fiber, a sensing optical fiber, a second conduction optical fiber, a photoelectric detector, a signal demodulation processor and a wearing device; the signal generator is connected with the laser through a circuit and used for generating a demodulation signal so as to drive the laser to output a laser pulse signal; the sensing optical fiber is a flexible sensing optical fiber, the wearing device can be worn on the movable joint of the human body, and the sensing optical fiber is fixed to the wearing device and can be bent and deform along with joint motion of the human body. According to the monitoring system for the human motion, the motion characteristics of all movable joints of the human body can be accurately reflected and monitored, and quantitative evaluation can be conducted. The motion characteristics have extremely important value on evaluation for dyskinesia diseases such as Parkinson's disease and fremitus.

The invention discloses a wet gradient surface preparation method integrating waviness with chemical gradient. The wet gradient surface preparation method comprises the following steps: step (1) preparing a coating solution of polydimethyl siloxane; step (2) performing coating solution spin-coating; step (3) preparing a flexible wavy structure; step (4) preparing shielding plate; and step (5) preparing a surface integrating chemical gradient with the flexible wavy structure. According to the preparation method disclosed by the invention, the flexible material is adopted, and the flexible material is utilized to generate the wavy structure in the stress directions at the two sides, so that motion barriers at the two sides of liquid drop are improved; and plasma treatment is utilized to obtain a chemical gradient micro structure surface, so that liquid drop spreads in single direction; and the side surfaces of the wavy structure are of trigonometric function types.