432 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 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.

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 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. 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.

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 this design product: Electric wheelchair controller. 2. Purpose of this design product: used to control an electric wheelchair. 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: Stereoscopic drawing 1.

1. The name of the design product: electric wheelchair frame. 2. The use of the design product: frame structure for assembling wheelchair, supporting and protecting human body. 3. The design points of the design product: shape. 4. The picture or photo that best shows the design points: perspective view.

To provide a posture control electric wheelchair that provides less adverse effect due to posture control of a chair part.SOLUTION: A posture control electric wheelchair 1 is arranged with left and right swing shafts 6a, 6b and a front and rear swing shaft 7. The left and right swing shafts 6a, 6b are arranged between a chair part 2 and a chassis part 3 of the posture control electric wheelchair 1 at a position at a center of a right and left direction of the chair part 2 and along a right and left center line CLr extending in a front and rear direction. The front and rear swing shaft 7 operates integrally with the left and right swing shafts 6a, 6b and is arranged in the vicinity of a position S in conformity with a vertical line suspended from a sacral position of a user M seating on the chair part 2.SELECTED DRAWING: Figure 1

This application provides a method for ensuring sufficient battery power for an electric wheelchair during its journey, comprising the following steps: obtaining a user-defined itinerary for the next day, including a destination, a planned charging point, and a planned departure time; calculating the total battery power required to complete the itinerary, taking the planned charging point as the starting and ending point and combining it with a preset activity duration at the destination, wherein the total battery power required includes the round-trip battery power from the planned charging point to the destination and a preset redundant battery power corresponding to the preset activity duration; obtaining the current battery power of the electric wheelchair and predicting the predicted remaining battery power of the electric wheelchair at the planned departure time based on the current battery power and the estimated standby power consumption from the current time to the planned departure time; determining, based on the predicted remaining battery power and the total battery power required, whether the battery power is sufficient to complete the itinerary at the planned departure time; if not, issuing a charging reminder to the user before the planned departure time.

The utility model relates to the technical field of wheelchairs, in particular to an electric wheelchair, which comprises a chair body, wheels, an advancing driving mechanism, a pedal mechanism, a leg support, an overturning driving mechanism and a storage battery, the chair body is provided with a pedal position, the wheels are rotatably mounted on the chair body, the advancing driving mechanism drives the wheels to rotate, the pedal mechanism is rotatably mounted on the chair body, and the leg support drives the overturning driving mechanism to rotate. The leg support is rotationally connected with the end, close to the pedal position, of the chair body, the overturning driving mechanism is installed on the chair body and drives the leg support to rotate around the second rotating shaft to be close to or away from the pedal position, and the storage battery is installed on the chair body and provides electric energy for the advancing driving mechanism and the overturning driving mechanism. The first rotating shaft is perpendicular to the second rotating shaft. According to the electric wheelchair, the electric wheelchair assists a rider in placing feet on the pedal mechanism, and the technical purpose of improving the convenience of independently using the electric wheelchair by old people with disabled legs and feet is achieved.

The utility model relates to the field of wheelchair discloses a kind of foldable electric wheelchair, comprising: back frame, to provide back support;Seat cushion frame is used to provide hip leg support, the lower part of the back frame is pivotally connected with the rear portion of the seat cushion frame, leg frame, including front leg support and rear leg support, the front leg support is fixedly connected with seat cushion frame, the rear leg support is hinged with the front leg support, the rear leg support is also provided with the first connecting rod linked with the back frame.The beneficial effects of the above technical solution are: the stability of the seat cushion frame can be improved by fixing the front leg support and the seat cushion frame, and the comfort is ensured.The linkage of the rear leg support and the back frame can make it easier to fold up the back frame and the rear leg support, making the folding and unfolding of the wheelchair more rapid.

1. The name of the design product: electric wheelchair (YHW001-F2). 2. The use of the design product: for people with difficulty in movement to ride and help walk. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention discloses a split type robot nursing bed with a rehabilitation training function, and relates to the technical field of rehabilitation nursing, the split type robot nursing bed comprises a first bed body, a plurality of supporting legs are fixedly arranged at the bottom of the first bed body, a second bed body is rotatably arranged on the side face of the first bed body through a rotating shaft, and a plurality of supporting legs are arranged at the bottom of the second bed body; the bottom of each supporting leg is rotatably provided with a universal wheel, and the side face of the first bed body is provided with an opening and closing mechanism used for controlling the first bed body and the second bed body to be opened and closed. According to the split type robot nursing bed with the rehabilitation training function, an electric wheelchair and a nursing bed are combined into a whole, after the electric wheelchair and the nursing bed are combined, a semi-automatic nursing bed can be formed, and a patient or a nurse can control the bed body through a button to lift up the upper part of the body to do simple activities; after the two parts are separated, the patient can be directly transferred to the electric wheelchair from the nursing bed, large-amplitude movement is not needed, convenience and rapidness are achieved, and secondary injury to the patient is avoided.

The utility model discloses a novel brushless lightweight electric wheelchair, including the electric guide rail of fixed in wheelchair backrest frame back side and downward, and the sliding end of electric guide rail is installed with the mounting seat through spring seat, and the mounting seat is equipped with the massage head for massaging the back of people through the fixing frame, and be equipped with the drive motor of drive massage head rotation on the mounting seat, and the both ends of electric guide rail are equipped with the position sensor of detecting the position of massage head respectively, still be equipped with controller on the wheelchair, position sensor, electric guide rail and drive motor all are electric connection with controller, the utility model discloses massage mechanism can move up and down, like this can to the whole back memory massage, this has played the effect of promoting blood circulation, avoids the body to be not comfortable because of long sitting, wherein the setting of spring seat guarantees the elastic contact between massage head and the back of human body, avoids knocking the back of human body.

The utility model discloses a quick release structure of a motor for a wheelchair, and relates to the technical field of wheelchair motor installation, the quick release structure comprises a fixing column, a clamping assembly and fixing assemblies, the fixing column is arranged on an electric wheelchair, the clamping assembly is clamped on the fixing column, a bottom plate is arranged on the clamping assembly, a driving motor is placed on the bottom plate, a set of fixing assemblies is arranged on the opposite side of the bottom plate, and the fixing assemblies are arranged on the opposite side of the bottom plate. The fixing assembly clamps and fixes the driving motor; by arranging the fixing assembly, the driving motor can be conveniently clamped and fixed to the bottom plate, tools are not needed, the driving motor is stably fixed, the stability of the driving motor in the running process of the electric wheelchair is guaranteed, the clamping assembly is connected with the bottom plate, the driving motor can be conveniently installed on the electric wheelchair, and the clamping assembly is convenient to disassemble without tools; the driving motor dismounting efficiency is improved.

The utility model discloses a self-balancing electric wheelchair, and relates to the technical field of wheelchairs. Comprising a seat body and a walking mechanism installed on the bottom face of the seat body, a walking balance mechanism is installed between the seat body and the walking mechanism, and the walking balance mechanism comprises a buffering assembly, a gravity center height adjusting assembly and a distance adjusting mechanism. Two internal thread blocks on the sliding chute shell are far away from each other to drive one end, located at the sliding chute shell, of the limiting rod to push the sliding blocks to slide, namely, the two sliding blocks in the sliding chute shell are far away from each other to compress the buffer springs on the sliding rods at the positions, so that the elastic potential energy release stroke of the buffer springs is shortened, and the buffer strength of the buffer springs is reduced; the jolting strength of the jolting road section at one end prevents the elastic potential energy release stroke of the buffer spring from being too long, and the jolting feeling is enhanced.