624 results about "Electric wheelchairs" patented technology

The invention relates to an electrically propelled wheelchair path planning obstacle avoidance method based on adaptive memory obstacle avoidance feedback, which improves the ability of pre-judging regular obstacles through historical data learning, and realizes reliable obstacle avoidance of an electrically propelled wheelchair in a complex dynamic environment through time-space alignment of laser radar point cloud data and a memory database. By adopting the scheme, obstacle avoidance parameter recommendation is performed by memorizing big data, path planning obstacle avoidance can be performed according to the historically memorized big data, the algorithm computing power demand is reduced, when the electric wheelchair appears in the same region and point location in history, the algorithm does not need to be repeatedly called to perform obstacle avoidance analysis and calculation, and the efficiency is improved. Therefore, the computing power load of the system can be greatly reduced, and obstacle avoidance feedback adjustment delay is avoided.

The invention relates to the technical field of electric wheelchair control, in particular to a multi-mode navigation control method and system of an electric wheelchair controller. The method comprises the following steps: acquiring a real-time environment monitoring video based on an electric wheelchair high-definition camera; video jitter distortion compensation and dynamic object frame-by-frame continuous optical flow tracking are carried out on the real-time environment monitoring video, and a moving track of each dynamic object is generated; performing environment static obstacle accurate identification on the real-time environment monitoring video, and performing dynamic environment perception modeling based on a moving track of each dynamic object so as to generate a dynamic environment map; a navigation mode switching decision is made based on a real-time wheelchair operation instruction of the user to obtain a current navigation mode of the user, and the current navigation mode of the user comprises a rocker control mode and an intelligent navigation mode. According to the invention, efficient and intelligent multi-mode control of the electric wheelchair is realized, so that the electric wheelchair can more flexibly and safely cope with a complex environment.

The invention provides an electric wheelchair damping suspension control method and device, and relates to the technical field of electric wheelchair control, and the technical scheme is characterized in that road surface information collected based on electric wheelchair front wheel mechanical response is obtained, and the road condition about to be encountered by rear wheels is predicted based on the road surface information and the distance between the front wheels and the rear wheels of an electric wheelchair; according to the predicted road condition, the optimal position of a movable heavy object below a seat of the electric wheelchair and the optimal parameters of a rear wheel damper are calculated and controlled, adjustment of the movable heavy object is used for optimizing distribution of the gravity center of the wheelchair, and adjustment of the rear wheel damper is completed before rear wheels make contact with the uneven road surface; the posture of the wheelchair and the comfort degree of a user are monitored in real time, and the position of the movable heavy object and parameters of a rear wheel damper are dynamically adjusted according to the monitoring result. The electric wheelchair damping suspension control method and device have the advantage that the comfort and stability of the electric wheelchair when the electric wheelchair runs on an uneven road surface are improved.

The utility model relates to an electric wheelchair and a wheelchair armrest mechanism. According to the wheelchair, the front wheel support and the rear wheel support are arranged in the crossed mode and rotationally connected, the seat can ascend or descend by controlling stretching or shortening of the driving piece, and therefore the height of the wheelchair can be adjusted according to the requirements of different crowds, and when the seat is located at the highest position, the wheelchair is folded; due to the fact that the front wheel assembly and the rear wheel assembly are not separated from the ground, the wheelchair can stand without additionally arranging anti-tilting wheels and the like, the wheelchair does not need to be erected manually, and folding and moving are very convenient. Meanwhile, the wheelchair armrest mechanism is simple in structure and convenient to adjust, and the unlocking piece can be controlled according to requirements to lock or unlock the locking piece, so that the position of the armrest is locked or unlocked, and the position of the armrest is adjusted according to requirements.

1. Name of the product under this design: Electric wheelchair (EMW43). 2. Purpose of the product under this design: This product is used for transportation. 3. Key design points of the product under this design: The shape. 4. The picture or photo that best illustrates the key design points: Stereoscopic picture.

The invention relates to an electric wheelchair control technology, in particular to an electric wheelchair seat posture road condition self-adaptive control method and system, and the method comprises the steps: receiving a first control instruction for entering a specific posture maintenance mode; responding to the first control instruction, obtaining a current posture parameter of the electric wheelchair seat, and storing the current posture parameter as a target posture parameter; monitoring disturbance parameters, wherein the disturbance parameters are posture parameter changes caused by uneven road surfaces in the running process of the electric wheelchair; and judging the range of the disturbance parameter, and if the disturbance parameter is smaller than a preset disturbance suppression threshold value corresponding to the specific attitude maintenance mode, maintaining the target attitude parameter. The method has the advantages that the specific target posture set by the user can be effectively maintained, unexpected posture adjustment caused by tiny road surface disturbance is avoided, interference to the user is reduced, and the use experience in a specific scene is improved.

The invention relates to an electric wheelchair control technology, in particular to an electric wheelchair armrest linkage control method and system, and the method comprises the steps: detecting armrest position change information of an electric wheelchair; when the armrest position change information meets a preset switching condition, driving mode switching is triggered, and a corresponding target mode is obtained; acquiring armrest movement rate information associated with the armrest position change information; starting a transition process of the control parameters according to the armrest movement rate information, so that at least one control parameter related to the driving mode is smoothly transited from a source mode parameter value to a target mode parameter value; and according to the converted control parameters, responding to an operating lever instruction of the user, and controlling the running of the electric wheelchair. The electric wheelchair has the advantages that the riding comfort and the operation smoothness of the electric wheelchair in the mode switching process can be improved, and potential safety hazards are reduced.

The invention discloses a real-time visual feedback control system, and relates to the technical field of mechanical control. The system comprises a human body information acquisition unit, an environment information acquisition unit, an electric wheelchair, an auxiliary control unit and a main control computer, the human body information acquisition unit is intelligent head display equipment; a high-definition camera and inertial measurement equipment are integrated in the intelligent head display equipment; the environment information acquisition unit comprises a high-definition camera, a laser radar and an ultrasonic probe; the auxiliary control unit is a six-degree-of-freedom mechanical arm and is used for grabbing through the mechanical arm; and the main control computer is used for deciding autonomous navigation path planning of the electric wheelchair and path tracking of the mechanical arm. The head information of the disabled is collected, the lightweight convolutional neural network is adopted to fuse multi-modal signals in real time, the priority of an input source is automatically optimized through a dynamic weight distribution algorithm, the user intention is predicted, the moving path of a mechanical arm is generated, and taking and placing of articles are completed.

The utility model provides an electric wheelchair with a rehabilitation function, which is used for upper limb rehabilitation exercise of a wheelchair user and comprises a touch sensor array arranged on the surface of an armrest of the electric wheelchair, and the touch sensor array comprises a plurality of touch sensors capable of being triggered by touch actions; when the touch sensor array is touched, the trigger state and the triggered sequence of each touch sensor are sent to the control module, so that the electric wheelchair moves according to the trigger state and the triggered sequence of each touch sensor in the touch sensor array; a wheelchair left side driving wheel is controlled by the touch action of the touch sensor array at the left armrest, and a wheelchair right side driving wheel is controlled by the touch action of the touch sensor array at the right armrest, so that a user can automatically judge the exercise amount of upper limb rehabilitation exercise according to the rotating direction and the moving distance of the electric wheelchair; according to the rehabilitation exercise device, convenient rehabilitation exercise can be provided for people with mobility difficulties, and a user can conveniently evaluate the rehabilitation exercise amount of the user.

The invention relates to the field of wheelchair control, and provides a control method and system based on a distributed electric wheelchair, and the control method comprises the steps: building a wheelchair dynamic model according to the structural characteristics of the wheelchair, obtaining the environment state information of the wheelchair, and building a time-varying potential field function based on the environment state information, building a model predictive control optimization problem by using the wheelchair dynamic model and the time-varying potential field function, solving the model predictive control optimization problem to obtain expected tire force, obtaining actual tire force and calculating a feedback error between the actual tire force and the expected tire force, building a tire force control model based on the feedback error, and controlling the tire force according to the tire force control model. The method comprises the following steps: acquiring a tire force control model, calculating by using the tire force control model to obtain an optimal tire force control parameter, generating a motor control instruction according to the optimal tire force control parameter, forming a complete control link from global trajectory planning, local dynamic obstacle avoidance and accurate tire force distribution, and remarkably improving the safety, real-time performance and robustness of the system in a complex dynamic environment.

An artificial intelligence-based electric wheelchair control method includes performing a booting procedure according to power application to pair with a user device; obtaining user information from a server through the paired user device; determining an operation control mode of an electric wheelchair based on the user information; recognizing a predefined start command through a sensor corresponding to the determined operation control mode when an always-on display (AOD) screen is in an inactive status; activating the inactivated screen according to the start command, outputting a user interface screen for controlling the electric wheelchair on a display device and waiting for a user input signal; performing machine learning on a user input signal input through the sensor to perform user identification and authentication; and identifying a control command corresponding to the user input signal to control the operation of the electric wheelchair, based on the fact that the authentication is successful.

The present application discloses a foldable electric wheelchair. The foldable electric wheelchair includes two frame modules spaced apart; the seat module is provided between two frame modules; the wheel module is located at the bottom of two frame modules; the foot pedal module is located on the front side of two frame modules; a foldable module, wherein the foldable module includes a first folding mechanism, a second folding mechanism, a linkage mechanism, a locking mechanism, and an unlocking mechanism. The first folding mechanism and the second folding mechanism are both provided between two frame modules, and the linkage mechanism is provided between the first folding mechanism and the second folding mechanism. The locking mechanism is slidably provided outside the linkage mechanism, and a support mechanism is hinged between the locking mechanism and the first folding mechanism. The unlocking mechanism slides inside the linkage mechanism.

The invention relates to the technical field of electric wheelchairs, and discloses a lightweight intelligent wheelchair which comprises an intelligent control module and an electric wheelchair body with a carbon fiber chair frame, the intelligent control module comprises an environment sensing unit, an interactive input unit and a central processing unit, the central processing unit is electrically connected with the environment sensing unit and the interactive input unit, and the execution control unit is electrically connected with the central processing unit and the electric control end of a driving motor of the electric wheelchair body. The central processing unit comprises a map building module, an intention understanding and predicting module, a local path planning module and a motion control and fusion module, through a man-machine cooperation mode of fusing a user instruction and an auxiliary path, the control leading right of a user is reserved, intelligent obstacle avoidance is achieved, stiff intervention is avoided, and the control efficiency is improved. And the passing continuity and safety are improved.

The invention relates to the technical field of electric wheelchair control, in particular to a control method and system based on a multi-mode intelligent brain-controlled wheelchair, and the method comprises the steps: collecting an electroencephalogram signal of a brain-controlled wheelchair user, carrying out the preprocessing, and generating a verification data set; based on the verification data set, determining that the brain-controlled wheelchair currently shows any one control state of a stop state, a motor imagery state and a moving state according to a judgment condition; blood oxygen data of a brain-controlled wheelchair user is obtained, a judgment threshold value is set, and when the blood oxygen data is lower than the judgment threshold value, emergency braking is carried out, and help seeking is carried out; namely, motor imagery signals are accurately recognized and classified into four motion states of advancing, retreating, left turning and right turning, and the motion of the brain-controlled wheelchair is controlled in real time; the concentration degree in the electroencephalogram signals is monitored, and the moving speed is flexibly controlled; according to the intelligent brain-controlled wheelchair, multi-mode control is carried out, a safety alarm system is arranged in an auxiliary mode in combination with an electroencephalogram signal, concentration control and a blink signal, and the stability, control precision and safety of the intelligent brain-controlled wheelchair are improved.

1. Name of the product in this design: Electric Wheelchair. 2. Purpose of this design: To provide mobility aids for the elderly and people with mobility impairments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of increasing functions of going upstairs and downstairs for wheels, in particular to a flexible auxiliary wheel coaxially parallel to a wheel. The invention aims to solve the problem that wheels simultaneously have flat ground walking and upstairs and downstairs climbing capabilities; the flexible auxiliary wheels are additionally arranged on the wheels, are folded around the axes of the wheels when walking on the flat ground and extend out of the wheels to form large-diameter flexible wheels when going upstairs and downstairs; the flexible auxiliary wheel can be folded and unfolded directly on the wheel and can be folded and unfolded by utilizing the axial space of the wheel; the folding and unfolding wheels are directly folded and unfolded on the wheels, electric slip rings are adopted to obtain power and control from the outside of the wheels, the small speed reducer motors fixedly installed on the wheels drive the folding and unfolding rotating wheels to complete folding and unfolding, and the folding and unfolding wheels can be used on electric wheelchairs, electric wheel type logistics trolleys and the like with the upstairs and downstairs requirements. When the vehicle is folded and unfolded in the axial space of the wheels, the axle needs to be in a hollow type, folding and unfolding are completed through a folding and unfolding rope and a mechanical rotating ring in the axial space position by a folding and unfolding rotating disc installed on a vehicle frame and the like, and the folding and unfolding device can be used for manually-pushed vehicle types such as baby strollers and the like.

The utility model provides an intelligent electric wheelchair. The intelligent electric wheelchair comprises a riding module and a plurality of wheel leg modules, each wheel-leg module comprises an upper executing mechanism, an upper arm, a lower executing mechanism, a lower arm and a driving wheel; the upper executing mechanism is arranged at the upper end of the upper arm; the lower actuating mechanism is arranged at the upper end of the lower arm; the driving wheel is arranged at the lower end of the lower arm; a transition wheel is arranged in each wheel-leg module, and when the driving wheels are separated from the ground, the transition wheels act on the ground and are used for supporting the intelligent electric wheelchair. By adopting the support of the transition wheel, the lower actuating mechanism can drive the lower arm and the driving wheel to rotate, so that the driving wheel rotates to the surface of a required obstacle, and the obstacle can be climbed under the driving action of the driving wheel; the transition wheel can also be used as a spare wheel of the intelligent electric wheelchair when the driving wheel is damaged.

1. The name of the product of this design: control console for electric wheelchair. 2. Purpose of the product of this design: The overall purpose is to be used as a means of transportation and walking assistance, and the local purpose is to control and drive the electric wheelchair. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic drawing 1. 5. Designate Design 1 as the base design. 6. Other circumstances that require explanation: The partial appearance design for which protection is requested is the control console of the electric wheelchair. The portion indicated by the dotted line in Design 1 is the unprotected portion; the portion covered by the gray translucent cover in Design 2 is the unprotected portion, and the blue structure is the protected portion. Design 2 The design for which protection is sought includes color.

The invention relates to the technical field of intelligent control, and discloses an electric wheelchair rollover risk detection and prevention system which comprises a data acquisition module, a data preprocessing module, a risk detection module, a risk prevention module and an intelligent control module. The risk detection module and the risk prevention module are arranged, so that a risk identification model is constructed, a risk prediction value is acquired, risk grades are divided based on the prediction value of the risk detection module, a corresponding risk prevention scheme is acquired, and an optimal risk prevention scheme is acquired based on an improved genetic algorithm; the risk prevention scheme is formulated while the risk is detected, corresponding schemes are obtained for different risk levels, various different risk environments and risk conditions can be effectively handled, rollover risk conditions are obtained from multiple angles, the method is more comprehensive and accurate, the effect of the risk prevention scheme is evaluated through the deep learning technology, and the risk prevention efficiency is improved. Therefore, pertinence and effectiveness of rollover risk prevention of the electric wheelchair are improved. And environmental data and functional data are fully utilized.

The utility model relates to a portable vehicle-mounted wheelchair system for people with lower limbs disabled, which comprises a base used for being mounted on a floor platform of a rear door in a vehicle, the base is driven by a first electric mechanism to horizontally rotate along a vertical shaft, and a sliding seat body driven by a second electric mechanism to perform reciprocating translation adjustment is arranged on the base. The sliding seat body is connected with a supporting platform through a parallelogram mechanism, and the parallelogram mechanism is driven by a driving assembly to ascend, descend and swing. According to the portable vehicle-mounted wheelchair system for the lower limb disabled person, the problem of getting on and off of the lower limb disabled person is solved. According to the device, the lower limb disabled can get on and off the vehicle without the help of an ordinary person, the wheelchair does not need to be replaced, the lower limb disabled can directly sit on the electric wheelchair to enter a riding room on the rear door of the large MPV, and the device can replace an automobile seat for the large MPV.

1. Name of the Design Product: Electric Wheelchair (Carbon Fiber CN502). 2. Use of the Design Product: A mobility seat for disabled persons. 3. Design Feature of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Indicates the Design Feature: Perspective view.

The invention relates to a voice instruction recognition technology of an electric wheelchair, in particular to a voice instruction recognition method and system of the electric wheelchair. The method comprises the following steps: receiving a voice instruction of a user, and identifying a fuzzy instruction in the voice instruction; on the basis of the fuzzy instruction, sensing data related to the current environment of the electric wheelchair are obtained; identifying a physical target in the sensing data and a relative distance between the physical target and the electric wheelchair; according to a preset attribution strategy, generating a customized clarification inquiry according to the physical target and the relative distance thereof; receiving a voice response, generating an instruction parameter according to the voice response, and controlling the electric wheelchair to execute a corresponding action according to the instruction parameter; and recording an interaction log, and optimizing the attribution strategy based on the interaction log. The problems of information loss, inaccurate instruction execution and system error attribution caused by improper clarification of fuzzy instructions can be effectively solved, and the accuracy of voice instruction recognition of the electric wheelchair is remarkably improved.

1. Name of the product under this design: Electric wheelchair. 2. Purpose of this product design: This product design is used for people with limited mobility to ride and assist in walking. 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. 5. The bottom surface of this design product is difficult to see or cannot be seen during use, so the top view is omitted.

The invention relates to the technical field of electric wheelchair control, and discloses an automatic power-assisted control method, system and equipment for an electric wheelchair, and the method comprises the steps: responding to a power-assisted starting instruction sent by a power-assisted switch module, and obtaining the back electromotive force of a motor and the position information of a motor rotor; according to the back electromotive force of the motor and the position information of the motor rotor, the thrust direction of the electric wheelchair is determined; the actual output power of the motor is obtained, the actual output power of the motor is adjusted by combining the thrust direction of the electric wheelchair and the counter electromotive force of the motor, and the preset assistance strength requirement is met. Power is started through the power-assisted switch module, the thrust direction is judged by combining the positions of the motor and the motor rotor, high-price sensors for torque, angle and the like do not need to be additionally arranged, the control structure is simplified, the cost is reduced, and the actual output power is dynamically adjusted by obtaining the actual output power of the motor and combining the thrust direction and the counter electromotive force of the motor.

The invention discloses a lower limb function rehabilitation exercise treatment chair and provides the following scheme that the lower limb function rehabilitation exercise treatment chair comprises an electric wheelchair, sliding plates are connected to the two sides of the electric wheelchair in a sliding mode, a binding belt is connected between the pair of sliding plates, an electric push rod is installed on the electric wheelchair, and air bags are connected to the outer sides of the sliding plates; a through exhaust cylinder is installed on the side, close to the interior of the electric wheelchair, of the air bag, pressing plates are slidably connected to the two ends of the seat plate, and second springs are installed between the pressing plates and the seat plate; when the electric push rod pulls the binding belt to pull a patient to stand and the patient and the electric wheelchair turn over on one side, the oxygen tank enables the air bag to be rapidly inflated and expanded, the air bag can play a buffering role when the electric wheelchair topples over, oxygen is released to relieve discomfort of the patient, by downwards treading the pressing plate, a second spring is compressed, the legs are hindered, and the patient feels comfortable. Therefore, legs are exercised, and lower limb rehabilitation of the patient is promoted.

The utility model relates to a double-pedal electric wheelchair, which belongs to the technical field of electric wheelchairs and comprises a seat component, a driving component, a front wheel component, a rear wheel component and a quick release fastener. The rear wheel assembly is connected with the driving assembly, the front wheel assembly is detachably connected with the driving assembly, the electric wheelchair is quickly disassembled for the first time, the driving assembly is detachably connected with the seat assembly, and the electric wheelchair is quickly disassembled for the second time; the front wheel assembly comprises a universal wheel set and an omni-directional wheel set, the universal wheel set and the omni-directional wheel set are each provided with a clamping strip, the quick-release buckles are detachably connected with the clamping strips and used for quickly replacing the universal wheel set and the omni-directional wheel set, and the quick-release front wheel assembly can be replaced under different road conditions, so that the electric wheelchair can be used in multiple scenes; according to the wheelchair, the adaptability and convenience are improved, a user can quickly adjust the configuration of the wheelchair according to different requirements and environments, the user can quickly complete replacement work by himself / herself without depending on professionals or special tools, replacement is convenient, and operation is easy.

1. Name of the product of this design: Battery box (3503). 2. Purpose of the product of this design: The product of this design is used as a battery box for electric wheelchairs. 3. Key points of the design of this product of this design: Shape. 4. The picture or photo that best illustrates the key points of the design: Stereoscopic picture 1.

1. Name of the product of this design: Wheelchair battery box. 2. Purpose of the product of this design: A battery box for an electric wheelchair. 3. Key design point of the product of this design: Shape. 4. Picture or photo that best illustrates the key design point: Stereoscopic picture.

The invention discloses an electric wheelchair with an obstacle crossing function, which comprises a frame type transmission base provided with a sitting component; the pair of manual obstacle crossing devices are arranged on the two sides of the frame type transmission base in the width direction; wherein the manual obstacle crossing device comprises an inclined obstacle crossing support, an obstacle crossing rotating disc, a circular rotating groove and a damping rotating ring, the obstacle crossing rotating disc is fixedly arranged on one side of the frame type transmission base, the circular rotating groove is formed in the annular side wall of the obstacle crossing rotating disc, and the damping rotating ring is arranged in the circular rotating groove; the damping rotating ring is arranged in the circular rotating groove to rotate clockwise, an inclined obstacle-crossing support is fixedly arranged on the damping rotating ring, and the inclined obstacle-crossing support obliquely extends from the damping rotating ring to the advancing direction of the electric wheel. Through the arrangement of the manual obstacle crossing device, the user can conveniently sit on the electric wheelchair to cross obstacles such as a doorsill and an outdoor road protrusion, and the use convenience of the user is improved.

1. The name of the product under this design: Electric wheelchair (foldable and propellable). 2. Purpose of this design product: for electric wheelchairs. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: Stereoscopic diagram 1.