2388 results about "Wheelchair" patented technology

The invention relates to an accurate collision-free automatic docking control method which is characterized by comprising the following steps: S1, remote guidance: triggering an automatic docking signal, establishing a three-dimensional semantic map, completing autonomous positioning, planning a docking path, performing real-time obstacle avoidance navigation, and executing safe and stable movement to reach a pre-docking position; s2, posture adjustment: when reaching the pre-docking position, determining the target posture of the target docking object and the posture of the object to be docked, and adjusting the posture of the object to be docked to the pre-docking posture; and S3, short-range docking: based on motion compensation, detecting a motion error, generating a motion correction instruction according to error signal feedback, and realizing collision-free accurate docking. The movement function and the body position changing function of the intelligent wheelchair are achieved through the intelligent wheelchair, smooth and stable switching can be achieved in the changing process of the intelligent wheelchair, and meanwhile the intelligent wheelchair is an indoor power assisting system, has the obstacle avoiding walking function and can be in collision-free automatic butt joint with a bed body and a closestool.

An expandable lavatory for full-size wheelchairs may comprise an aircraft lavatory door system with a forward door and an aft door wherein both doors are capable of expanding into an expanded locked position. The expandable lavatory for full-size wheelchairs may comprise a first single lavatory, a second single lavatory, a collapsible divider, and a lavatory door system which functions to provide a door to each single lavatory and a door for a configuration in which the two single lavatories convert into one expanded double lavatory. The expandable lavatory for full-size wheelchairs may be a forward lavatory facing the aisle in proximity to a first galley, a second galley, and a wheelchair tie down space.

The invention relates to the technical field of intelligent wheelchair control, in particular to an intelligent wheelchair control method and system. The method comprises the following steps: constructing a three-dimensional ground feature model by extracting historical environment data in a memory of electronic monitoring equipment on a wheelchair; thirdly, ground pit geometrical morphology analysis is carried out, pit data are obtained, wheel clamping stagnation situation simulation is carried out based on the pit data, and the wheel struggling behavior is simulated; and finally, constructing an optimization model by using the struggling behavior learning data, and performing optimization through training feature importance parameters to form a clamping stagnation struggling control optimization model. The model is then transmitted to the intelligent wheelchair control terminal. The intelligent wheelchair control technology is optimized, so that the intelligent wheelchair control technology is more perfect.

The invention relates to the technical field of intelligent wheelchair scheduling, in particular to an intelligent wheelchair scheduling method and system. The method comprises the following steps: extracting an obstacle avoidance failure decision in a historical scheduling task, and generating a clustering logic of decision failure through clustering analysis; analyzing the motion trail deduction deviation of the sudden obstacle based on clustering logic, and further performing sudden risk pre-judgment lag analysis to obtain lag regression data; and lagging regression data is utilized to carry out front deviation correction memory learning of wheelchair scheduling braking, decision is optimized through reinforcement learning iteration, and finally optimized decision data is output. According to the method, the intelligent wheelchair scheduling technology is optimized, so that the intelligent wheelchair scheduling technology is more perfect.

The invention belongs to the field of intelligent robots, particularly relates to an intelligent wheelchair following system based on single target tracking, and aims to solve the problem of poor effect of effectively avoiding obstacles in a complex scene and continuously following a single target under the condition of multi-target interference. The system comprises a sensor module used for restoring scene image data; the man-machine interaction module is used for acquiring a to-be-tracked target; the single-target tracking module is used for generating a moving strategy of the intelligent wheelchair; the intelligent decision-making module is used for generating an optimized path and dynamically adjusting the moving direction and speed of the wheelchair; the driving control module is used for realizing smooth steering and emergency braking of the intelligent wheelchair; and the communication module is used for realizing communication among the modules. According to the invention, three-dimensional positioning precision, target identification accuracy and tracking stability are improved, safety control and man-machine interaction are optimized, the method is especially suitable for people having difficulty in moving, and life self-care and social participation are improved.

The invention belongs to the technical field of wheelchairs, and particularly relates to a foldable wheelchair which comprises a backrest frame body, a seat plate frame body, armrest frame bodies and a folding mechanism, the folding mechanism comprises a first folding arm and a second folding arm, the top end of the first folding arm is rotationally connected with the front end of the seat plate frame body, and the top end of the second folding arm is rotationally connected with the bottom end of the backrest frame body; the top of the second folding arm is fixedly connected with the bottom of the backrest frame body through bolts which are in interference fit and can be movably locked, the left bolt and the right bolt are correspondingly arranged, and a pull rope is connected between the two bolts; the overall structural design is simple and ingenious, a user does not need to conduct complex operation when needing to fold, only the pull rope needs to be pulled, and when needing to unfold, only the bolts on the two sides need to be inserted, and locking can be completed.

The invention discloses a dynamic gesture recognition control system for an intelligent wheelchair, and relates to the technical field of intelligent wheelchairs, the system comprises the following components: an environment sensing module which is composed of a laser radar and an ultrasonic sensor and is used for collecting information of a surrounding environment in real time and constructing an environment map; meanwhile, the position and the shape of the obstacle and the distance information between the obstacle and the wheelchair are accurately recognized; by introducing the dynamic gesture recognition technology, not only can the current static gesture action of the user be recognized, but also the following action intention of the user can be predicted based on parameters such as the speed, the angle and the acceleration of the gesture, so that the intelligent wheelchair can make a response in advance, closer and smoother interaction with the gesture operation of the user is achieved, and in addition, the user experience is improved. In combination with the information of the environment sensing module, the intelligent wheelchair can more accurately understand the intention of the user and perform reasonable obstacle avoidance operation in a complex environment, so that the overall use experience and safety are improved.

A multimodal wheelchair configured to be securely mounted to an aircraft is disclosed. The multimodal wheelchair may include: a first section, including: a processing system contained within a housing of the first section; a movement controller component positioned on a portion of the first section that is connected to the processing system; a plurality of wheels that are controllable by the movement controller; and a set of tracks recessed within a first side of the first section; and a second section, including: a seat portion located on a first side of the second section, the seat portion having an integrated harness; and a connection component, coupled to a second side of the second section, that attaches the second section to the first section via coupling with the set of tracks of the first section. Other aspects are described and claimed.

An angle-adjustable wheelchair tractor comprises a lower frame (7) and an upper frame (8) which are hingedly connected, the lower frame (7) being a shock-absorbing frame, the lower frame (7) being respectively provided with a wheel hub motor (2) and a battery (3) for providing electric energy to the wheel hub motor (2), the upper frame (8) being provided with a pair of handles (4) for controlling the direction of the wheel hub, a brake disc (5) being provided on one side of the wheel hub motor (2), a brake handle (6) for controlling the brake disc (5) being respectively provided on the pair of handles (4), a connecting sleeve (10) being provided on the lower frame (7), and a front support frame (11) and a front connection device (12) connected to a front support rod of the wheelchair being respectively provided on the connecting sleeve (10). The utility model has the advantages that the tractor and the wheelchair are connected in a split type, the installation and use are convenient and flexible, and it is convenient for traveling alone over long distances, the frame is provided with a shock absorber and the inclination angle of the upper part thereof is adjustable, which can greatly improve the driving comfort.

The invention belongs to the technical field of intelligent wheelchairs, particularly relates to a wheelchair real-time obstacle prediction and avoidance system based on multi-target tracking, and aims to solve the problem that the performance and application of a wheelchair in a complex dynamic environment are limited in the prior art. The system comprises a data acquisition and processing module used for calculating the distance between an obstacle and a reference point; the obstacle detecting and tracking module is used for generating a suspected area of the obstacle based on the multi-dimensional features; screening out a determined area, then calculating the similarity of suspected dynamic obstacles in the determined area, screening out the dynamic obstacles based on the similarity, and screening out the determined obstacles based on credibility scores; the decision control module is used for determining an optional path based on the path evaluation function; and then a trajectory evaluation preferential function is used to score a trajectory corresponding to path planning, and the trajectory with the highest stability is selected. According to the invention, high-efficiency obstacle detection and avoidance can be realized on the premise of low calculation amount.

The invention discloses an intelligent wheelchair control method based on multi-source information fusion, and belongs to the field of data recognition and wheelchair intelligent control. The implementation method comprises the following steps: constructing a corresponding relation between gesture actions and wheelchair control directions, and presetting an identification framework; processing the obtained multi-source information to obtain a basic probability distribution result of the evidence corresponding to each single-source information; determining the absolute importance of the evidence corresponding to each piece of single-source information in the fusion process; determining the relative importance of the evidence corresponding to each piece of single-source information in the fusion process; determining the comprehensive importance of the evidence according to the obtained relative importance and absolute importance; according to the comprehensive importance of the evidence corresponding to the single-source information, redistributing a fusion weight for the evidence corresponding to each piece of single-source information to obtain a weighted new evidence; dS evidence fusion is applied, a final fused gesture action recognition result is obtained, the behavior of the wheelchair is controlled according to the gesture recognition result, and intelligent wheelchair control based on multi-source information fusion is achieved.

The invention relates to the technical field of intelligent wheelchairs, in particular to an intelligent wheelchair safety early warning braking system and method based on trajectory prediction. According to the technical scheme, the system comprises a multi-sensor module, a data processing module, a track prediction module and a safety early warning braking module. Wheelchair motion state data are collected in real time through a multi-sensor module, multi-source data are fused based on a Kalman filtering algorithm, noise is removed, feature parameters of obstacles and the wheelchair are extracted, a motion track equation of the wheelchair and a target object is derived, the relative distance and the collision time are calculated, the collision risk is evaluated, and according to the risk evaluation result, the collision risk is evaluated. And triggering early warning and starting a brake device. According to the method, the future motion trails of the wheelchair and the target object can be predicted more accurately, the precision and reliability of trajectory prediction are remarkably improved, and powerful support is provided for pre-judging collision risks in advance.

The present invention is intended to provide a lithium battery pack for a wheelchair and medical auxiliary driving equipment, the lithium battery pack including a battery module configured such that a plurality of cylindrical batteries are arranged along the horizontal and vertical directions therein, an insulation case configured to cover the battery module in an insulating manner while fastening the battery module, and a battery case injection-molded with aluminum so that it has excellent heat dissipation performance, wherein the insulation case covering the battery module is allowed to be detachably inserted and fastened into the battery case, so that the lithium battery pack can be easily mounted on various types of auxiliary driving equipment such as a medical electric scooter, a medical electric wheelchair, etc.

A platform access system for a wheelchair includes a deployable ramp, actuators, a sensor, and a controller. The deployable ramp includes a first elongated beam having a toothed rack portion arranged thereon. The deployable ramp is moveable, via actuators, on a platform between a first position and a second position. The deployable ramp is vertically pivotable on an edge portion of the platform, with a second end being disposed at a second elevation. The first end of the deployable ramp is securable, via one of the plurality of actuators, to the edge portion, and the toothed rack portion of the first elongated beam is arranged to engage a sprocket of a drive wheel of a wheelchair that is disposed at the second elevation. A communication link of the ramp controller is arranged to communicate with the wheelchair to control the wheelchair to traverse the ramp and access the platform.

The utility model discloses a multifunctional mobile nursing device which comprises a movement chassis and a seat assembly, the seat assembly comprises a stand column and a lifting part, the stand column is vertically fixed to one side of the movement chassis and has a height adjusting function, and the lifting part is fixedly installed on the stand column and used for bearing a user; the lifting part comprises a seat plate support horizontally fixed to the top end of the stand column, a backrest support rotationally installed on the seat plate through a first angle adjusting mechanism, and a leg support rotationally installed on the seat plate support through a second angle adjusting mechanism. According to the utility model, the elderly can be safely and efficiently transferred to the bed, the elderly can be automatically navigated to a specified area according to an indoor preset guide line, the direction and position of the elderly can be flexibly and freely changed even in narrow spaces such as bedrooms and toilets, and meanwhile, the elderly can be switched from a wheelchair to a potty chair at any time; and the obstacles of living and sanitary living of the old people are greatly solved.

A system of non-parallel folding planar cross-braces are adapted to naturally fold away from one another to provide a naturally rigid structure that requires little or no latching to provide a stable frame. An interlocking system that engages opposing pivot points of the cross-braces can be arranged to create a very rigidly connected frame. A variation of the system may allow for both a sling seat and an open frame for attached seating to utilize the opposing planar cross-braces.

The utility model discloses a wheelchair convenient to fold, which comprises a seat supporting frame, a front supporting frame is hinged on the front side of the seat supporting frame, front wheels are arranged at the bottoms of two fork feet of the front supporting frame, rear supporting rods are respectively hinged on two sides of the seat supporting frame, rear wheels are arranged at the end parts of the rear supporting rods, and a backrest supporting frame is hinged on the rear side of the seat supporting frame. A side supporting rod is connected between the backrest supporting frame and the rear supporting rod, a lower supporting rod is connected between the side supporting rod and the front supporting frame, a lock hole is formed in the upper end of the side supporting rod, and a lock pin assembly corresponding to the lock hole is installed on the backrest supporting frame. The connecting pin can be driven to slide in the guide groove by rotating the handle, so that the lock pin head is driven to be separated from the lock hole under the action of the pull rope, unlocking when the wheelchair is folded is realized, and compared with a traditional plate buckle type structure, the unlocking mechanism has the advantages of being more convenient and labor-saving to operate, free of hand clamping risk and good in attractiveness.

A formable support stand system for portable electronic devices that provides a manner to support a device such as a tablet computer in a variety of orientations from a supporting surface such as a tray or table. The embodiments comprise a flex-rod prop, and a fastener for attaching the prop to an electronic device, such that the flex rod resists deformation, but can be adjusted into a wide variety of positions. The stand system is adapted for use with devices used by those with limited or erratic motor control, in order to allow positioning of the screen face of a tablet computer in a chosen orientation relative to a support tray on a wheelchair, for instance. The stand system comprises a flexible, positionable flex-rod, an anti-skid sleeve and is removeably attached to the electronic device by means of rod clamp system. The formable support system is also provided as a kit for retrofitting existing devices.

The invention provides a foldable lower limb rehabilitation wheelchair which comprises a wheelchair mechanism, a rehabilitation mechanism and a folding mechanism, the wheelchair mechanism can achieve a daily walking replacing function, the rehabilitation mechanism comprises leg rehabilitation assemblies and a pedal assembly, the leg rehabilitation assemblies are arranged on the two sides of the wheelchair mechanism respectively, and the pedal assembly is connected to one end of each leg rehabilitation assembly. The rehabilitation mechanism is arranged between the two sets of leg rehabilitation assemblies, the leg rehabilitation assemblies can assist in achieving leg movement, the pedal assembly can assist in achieving foot movement, therefore, comprehensive exercise can be conducted on the lower limbs, and when exercise is not conducted, the rehabilitation mechanism can serve as a pedal part of a wheelchair to provide support for the lower limbs of a patient; the folding mechanism is arranged below the rehabilitation mechanism, is connected with the rehabilitation mechanism when unfolded to jointly achieve movement of the pedal assembly, and can be stored below the wheelchair mechanism when folded without occupying space.

A frame assembly for a wheelchair includes a first side member, and a first leg support member coupled to the first side member. The first leg support member includes a first curved portion and a second curved portion, the first curved portion oriented to curve in a first direction, the second curved portion oriented to curve in a second direction, and the first and second directions being different.

The utility model relates to the technical field of wheelchairs, and provides a front wheel driving type stair climbing chair which comprises a chair frame, and a seat plate and a backrest are arranged on the chair frame. Two groups of obliquely arranged track frames are fixedly mounted at the side rear part of the chair frame; a track is mounted on the track frame; the chair frame is further provided with a stair climbing motor used for driving the two crawler belts to rotate synchronously. Two front wheels are mounted at the front end of the chair frame; a rotating shaft is arranged on the chair frame; the two ends of the rotating shaft are fixedly connected with rear wheel legs respectively, and rear wheels are installed on the rear wheel legs. The front wheel is a driving wheel; and the rear wheel is a driven wheel. Therefore, the front wheels are arranged to be the driving wheels, the wheel tread width is small, and then the turning radius is reduced. The structure of the rear wheels is simplified, spacing is reduced, and access to the door frame is facilitated. When the stair climbing chair steers in a narrow space, one front wheel serves as a turning fulcrum, the back and the side faces of the stair climbing chair have enough space, steering operation is convenient and fast, and safety is good. The front wheel is a driving wheel, so that the risk that the stair climbing chair turns backwards during sudden acceleration is also avoided.

The invention relates to a multi-mode automatic following obstacle avoidance wheelchair control method and device, equipment and a medium, and the method comprises the steps: determining a target passenger to be in a seating state when detecting that an energy accumulation value does not exceed a preset energy accumulation threshold value, extracting an image key point in a target sidewalk image through employing a Sh i-Toma i algorithm, and obtaining a target sidewalk image; calculating a motion vector of each image key point between two continuous frames of target sidewalk images by adopting an optical flow method so as to determine a dynamic point proportion; and determining a linear velocity constraint of the velocity type to which the automatic following obstacle avoidance wheelchair belongs in each environment according to the dynamic point proportion, and performing path planning according to the linear velocity constraint by adopting an improved cost function corresponding to a DWA algorithm so as to determine an automatic obstacle avoidance track of the automatic following obstacle avoidance wheelchair in a second cost map. The environment adaptive capacity, the target tracking capacity, the dynamic obstacle avoidance capacity, the path planning capacity and the intelligent level of the wheelchair are effectively improved.

The invention provides a terrain elevation map generation method and system based on radial basis function fitting, and the method comprises the steps: receiving historical point cloud information and odometer information, generating a local point cloud map, and carrying out the downsampling; dynamically generating a center point of the RBF based on the down-sampled local point cloud map and the ground fitting area; calculating a kernel matrix according to the down-sampled local point cloud map and the central point, and iteratively calculating the weight of the central point through GPU parallel acceleration to generate a terrain manifold; and calculating and outputting an elevation map through GPU parallel acceleration according to the terrain manifold. According to the method, the fitting speed is remarkably increased, the real-time performance of elevation map generation is ensured, and the map generation speed is greatly increased; the elevation information of the dynamic obstacle is updated while the elevation information of the static obstacle is reserved, and perception information is provided for movement, navigation and obstacle avoidance of the intelligent wheelchair; and an elevation map, a gradient map and a normal vector map with any resolution can be output.

The utility model relates to the technical field of access control systems, in particular to a gate machine with a face recognition function, which comprises at least two groups of face recognition cameras and a controller, the at least two groups of face recognition cameras are respectively and electrically connected with the controller, the at least two groups of face recognition cameras are arranged at intervals along the vertical direction, and the controller is electrically connected with the controller. The upper face recognition camera is arranged at the position away from the ground by a first threshold value, the lower face recognition camera is arranged at the position away from the ground by a second threshold value, and the first threshold value is larger than the second threshold value. Through the above arrangement, the configuration of the high-position face recognition camera and the low-position face recognition camera is formed, compared with a traditional gate with binocular cameras, the recognition range of the scheme is wider, and the face recognition camera located on the upper portion can be suitable for most people; the face recognition camera located on the lower portion can enable children standing at the position about 1 m away from the camera or old people sitting on a wheelchair to be accurately recognized, and the passing efficiency of all people is remarkably improved.

A system and method of docking a wheelchair relative to an object such as a table. The method includes converting a user-selected 2D point in a 2D image of a scene into a 3D point in a 3D point cloud of the scene. A first group of edges is determined from the 3D point cloud based on the 3D point. The method includes defining an intermediate dock pose and an approximated reference edge. The method includes determining a second group of edges from the 3D point cloud and at least one potential reference edge. The method includes determining a dock pose based on one of the at least one potential reference edge and moving the wheelchair towards the dock pose.

An adaptable lavatory for persons of reduces mobility, such as wheelchair occupants, may comprise an aircraft lavatory wall system with a center wall which is configured to translate along a drop ceiling rail system. A linear rail system may be installed within the drop ceiling and have rollers coupled to hanging brackets to secure the center wall. The center wall may be secured in a center of two individual lavatory stalls to provide for a dual lavatory configuration. The center wall may be translated forward or aft along the drop ceiling rail system and secured on either side of the lavatory to provide for an expanded lavatory space in either a right-handed or left-handed configuration.

The invention belongs to the technical field of robots, and particularly relates to a rope-driven glenohumeral joint bionic double-arm exoskeleton robot and a control method.The rope-driven glenohumeral joint bionic double-arm exoskeleton robot comprises a power-assisted mechanical arm, and the power-assisted mechanical arm comprises a glenohumeral mechanism installed on the top of a wheelchair. The humeral mechanism comprises a first motor installed on the top of the wheelchair through a first motor installation base, a first driving rope wheel coaxially installed with an output shaft of the first motor and a first driven rope wheel synchronously rotating with the first driving rope wheel through a first driving rope assembly, and the transmission ratio of the first driving rope wheel to the first driven rope wheel is 1: 2. The first driving rope wheel and the first driven rope wheel are driven by the first motor to rotate, the first driving rope wheel moves by 1 degree, the first driven rope wheel moves by 2 degrees along with the first driving rope wheel, the movement rule is similar to the movement rule of the glenohumeral joint of the human body, the robot can better conform to the movement rule of the human body, and higher-quality and more flexible assistance is provided for the human body.

An air bag brake mechanism is characterized in that the air bag brake mechanism comprises an auxiliary brake mechanism (100) and a wheelchair structure (200), the auxiliary brake mechanism (100) is installed on the wheelchair structure (200) on the market, and then an air bag is manually controlled to control contact between the auxiliary brake mechanism (100) and the ground so as to control fixation or freedom of a wheelchair. Wherein the wheelchair structure (200) is provided for a common wheelchair which is not in the range of the patent but is only convenient to describe the auxiliary braking mechanism of the patent. The auxiliary braking mechanism has the beneficial effects that 1, the belt wheel seat is fixed through the auxiliary braking mechanism, and the chair is prevented from sliding; 2, a person does not need to bend down to fix a similar traditional brake wheel to fix the wheelchair, and the fixation or freedom of the wheelchair can be controlled only by manually controlling the air bag; 3, a pure mechanical structure is adopted, electric appliance auxiliary control is not needed, and performance is reliable and safe;

1. The name of this design product: Oxygen cylinder holder (for wheeled walkers). 2. Purpose of the product of this design: An accessory used on mobility aids such as rollators or wheelchairs, used to place oxygen cylinders. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

A holding system for a wheelchair in an aircraft is proposed, including a plate-shaped base unit having first fastening elements at an underside configured to be connected to complementarily shaped second fastening elements in the form of seat rails on a floor or surrounding structure in the aircraft for fastening the base unit, a front holding unit and a rear holding unit arranged on an upper side of the base unit at a distance from each other and defining therebetween a placement area for a wheelchair. The front holding unit and the rear holding unit are configured to form a releasable form-fit connection with the wheelchair disposed on the placement area so that the wheelchair is braced between the front holding unit and the rear holding unit. The holding system is configured to fix the wheelchair stationarily to the floor during operation of the aircraft.