INTELLIGENCE-POWERED SMART WHEELCHAIR SYSTEM CONTROLLED BY FOOT PRESSURE SENSORS AND FEATURING OBSTACLE DETECTION.

Abstract

The invention relates to a foot-controlled electric wheelchair system designed specifically for individuals with orthopedic disabilities, aiming to improve their mobility through assistive mobility systems, and including those without arms or the ability to use their upper extremities.

Description

1 TARIFF AI-POWERED, CONTROLLED BY FOOT PRESSURE SENSORS, AND SMART WHEELCHAIR WITH OBSTACLE DETECTION FEATURE SYSTEM Technical Area The invention is an assistive device aimed at improving the mobility of individuals with orthopedic disabilities. in the field of systems, especially for those without arms or with impaired upper extremity use AI-powered smart devices that can be controlled by the foot movements of individuals with disabilities It is related to the wheelchair system. 10 The invention is specifically designed to assist individuals with orthopedic disabilities in improving their mobility. It is in the field of musculoskeletal systems, especially in those who lack arms or upper extremities. artificial intelligence that can be controlled by foot movements by individuals who lack the ability to use it It relates to an assisted smart wheelchair system. State of the Art 15 The vast majority of current wheelchairs have hand-operated joysticks and armrests. or operates with manual propulsion systems. For individuals who cannot use their upper limbs. The solutions developed are generally expensive, complex, and customized designs. It requires. Electric wheelchairs allow users with limited mobility to move independently for 20 minutes. It is widely used to enable movement. Known electrical Driving movements in wheelchairs are mostly performed with a joystick, via a button, control panel or similar manual control element This is provided. However, especially child users, in their upper extremities 25 users with mobility limitations or those who have difficulty using a joystick From the users' point of view, these control elements are always easy to use. This may not be possible. Therefore, the user uses their foot to create an electric wheelchair. Different control systems have been developed that allow the chair to be controlled. information about the user's foot position, movement, applied pressure, or contact in the systems 30 sensors that control the movement of the wheelchair by detecting it through various means. can be converted into electrical signals. However, only the user Direct application of the command given by the operator to the motors, especially in confined spaces, 2 In environments where moving objects are present, such as walls, furniture, or other obstacles Driving in this vicinity can lead to various safety problems. Some known smart wheelchair systems utilize environmental sensing sensors. Obstacle detection or autonomous navigation is performed using this method. However, this type of In systems, there is a direct link between user control and environmental sensing, and user 5 Providing a control architecture that can modify the driving command generated by it. This is not always possible. Therefore, with the user's foot movement... it maintains the driving command it created, but makes that command dependent on environmental conditions. can make it secure and, if necessary, execute the command given by the user. There is a need for an electric wheelchair system that can change its direction and / or speed. It is located. In addition, in existing systems; * The speed cannot be adjusted according to foot pressure intensity. * AI-powered obstacle detection systems are not widespread. * Systems that can create safe routes by analyzing the user's environment are limited. 15 * Ergonomic and safe solutions designed for child users are not sufficient. Therefore, it provides safer, more independent movement and adapts to user needs. A new system capable of displaying this needs to be developed. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement in the relevant technical field is necessary. 20 It has been made. Purpose of the Invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. The purpose of the invention is to enable the user to control the electric wheelchair by using their foot. 25 The goal is to provide a system that enables this. 3 Another aim of the invention is to enable the user to create driving commands with their foot and drive the vehicle. Control based on perception data obtained from the environment around the chair. The goal is to develop a system that enables this. Another purpose of the invention is to enable the user to control the direction of movement depending on environmental conditions. The goal is to enable it to be changed accordingly. Another purpose of the invention is to enable movement when the user gives a forward movement command. If there is a risk of collision due to an obstacle in the direction of the driving command, 10 The goal is to provide a system that enables this. The structural and characteristic features and all the advantages of the invention are given in the figures below. This becomes clearer thanks to the detailed explanation written with references to these figures. This will be understood, and therefore the evaluation should also take these forms and detailed explanations into account. 15 It needs to be done by taking precautions. Figures that will help understand the invention. Figure 1 shows a general overview of the electric wheelchair system that is the subject of the invention. It shows its appearance. Figure 2 shows the foot control panel and footrest of the electric wheelchair, which is the subject of the invention. It shows the placement of the sensors. Explanation of Part References chair frame 11 Backrest 12 Footrests 25 13 Armrests 14 Drive wheels Foot control panel 4 21 Foot control surfaces 22 Foot sensor Environmental sensing sensor Detailed Description of the Invention The invention concerns an electric wheelchair system with preferred configurations, only 5 This is explained to facilitate a better understanding of the subject. The chair frame (10) contains the seating area that allows the user to sit down. backrest (11) that supports the back, armrests (13) that support the user’s arms and Includes footrest (12) that supports the user's feet. At least one drive wheel (14) is attached to the chair frame (10). Drive wheel 10 (14) is driven by an electric motor and the direction of operation of the electric motor and / or by changing the speed, the direction and speed of the wheelchair's movement are controlled. is being done. In a preferred application, the drive wheels are located on the right and left sides (14), They are driven by independent electric motors. Thus, the right and left 15 the rotational speeds and / or directions of the drive wheels are independent of each other. by changing it to allow forward, backward, right and left movements of the wheelchair. It can be accomplished. Foot control panel (20), chair in which the user's foot can be placed on the front of the body (10), preferably on the footrest (12) or on the footrest 20 (12) is located in a nearby area. Foot control panel (20) controls the position, contact, and direction of movement of the user's foot. and / or includes one or more foot sensors (22) that detect the pressure applied. Foot sensors (22), pressure sensor, force sensor, capacitive sensor, touch The sensor could be a piezoelectric sensor or a similar sensing element. 25 In the preferred application, there are multiple areas in different regions on the foot control panel (20). There is a foot sensor (22). The sensors are positioned in different areas. thanks to the position of the user's foot on the control surface (21) It can be determined. For example, applying it to the front region of the user’s foot control surface (21) is advanced When generating a user command signal in the direction of movement, it is applied to the rear area. A user can generate a command signal in the reverse direction. Similarly, for right and left 5 The foot movements applied to the regions correspond to the commands to turn right and left respectively. It can enable its creation. The environmental sensing sensor (30) detects objects around the wheelchair. and / or the chair frame (10) to enable the detection of obstacles. It is connected. Environmental sensing sensor (30); ultrasonic sensor, infrared sensor, 10 camera, lidar sensor, radar sensor, range sensor, tilt sensor or any of these It can consist of a combination of these. Environmental sensing is preferred in the application. sensor (30) located at the front of the wheelchair and facing the direction of movement It is positioned. However, multiple environmental sensing sensors (30) the use of these sensors and their placement on the front, back, right and left sides of the wheelchair 15 It is also possible to place it to cover the area. Obtained from foot sensors (22) environmental sensing sensor (30) obtained from user command signal the evaluation of the detection signal together within the same AI-powered system This structure allows the system to detect obstacles in the environment with the help of artificial intelligence. It can prevent collisions by sensing the impact, and adjusts its speed according to the amount of foot pressure. 20 It is able to do so, increasing user safety and providing an ergonomic and comfortable environment for children. It offers usage. For example, the user can give a forward movement command via the foot control panel (20). when given and the environmental sensing sensor (30) moves in the direction of the wheelchair's movement When it detects an obstacle, the control unit (30) moves forward as created by the user 25 This can prevent the command from being directly transmitted to the motor drive unit. In this case, the control unit (30) receives the user command signal with a lower speed value. It can be converted into a driving command. In this way, the basic driving command given by the user is preserved, while the environmental factors are taken into account. If the conditions are incompatible with safe movement, the command in question is technical 30. The change is ensured accordingly. 6 If the artificial intelligence processing unit is used, from the environmental sensing sensor (30) The data obtained includes previously recorded environmental data and / or driving data. They can be evaluated together. In this application, the task of the artificial intelligence processing unit is to move the wheelchair independently. Instead of driving independently of the user, the driving is created by the user. 5 the assessment of the suitability of the command to environmental conditions and, if necessary, the word The goal is to help modify the command. Thus the user controls the wheelchair via the foot control panel (20). While maintaining basic driving control, the environmental perception system allows the user An additional security technique prevents the command from creating an unsafe action. 10 It creates a layer. By placing his / her foot on the control surface (21) of the foot control panel (20) It gives the wheelchair a movement command. Foot sensors (22) detect the position, movement and / or pressure applied by the user’s foot. It is perceived by. 15 At the same time, the environmental sensing sensor (30) relates to the surroundings of the wheelchair. It generates an environmental sensing signal. The user's foot is placed on the control surface (21) on the sensor foot control panel (20) by moving the user’s foot on the foot sensors (22) Its position, direction of movement and / or the amount of pressure it applies are detected; this detection is 20 As a result, the user corresponds to the commands forward, backward, turn right, and turn left. command signals are generated. Pressure information obtained from foot sensors (22) The wheelchair's speed level is determined accordingly, with lower pressure. at lower speeds at lower pressure values, and at higher speeds at higher pressure values. Movement is enabled. Artificial intelligence obtains 25 from the environmental sensing sensor (30). By evaluating the collected environmental data, walls, people, vehicles, stairs, sidewalks, thresholds and It identifies obstacles such as potholes and automatically reacts if there is a risk of collision. It can slow down or stop the engine.

Claims

7 REQUESTS 1. Assistive devices aimed at increasing the mobility of individuals with orthopedic disabilities. In the field of systems, especially in those lacking arms, the ability to use the upper extremities foot-operated electric devices to be made available for use by disabled individuals It is a wheelchair system, and its features are: 5 a chair frame (10), at least one drive wheel attached to the chair frame (10) (14), on the front of the chair frame (10) and the user's foot a foot control panel (20) positioned so that it can be placed, foot control positioned at different positions on the table (20) and the user's foot at least two foot sensors (22) that detect contact and / or applied pressure, wheeled 10 to detect objects and / or obstacles around the chair at least one environmental sensing sensor (30) attached to the chair frame (10), It includes.

2. According to claim 1, it is an electric wheelchair system, the feature of which is foot control. the table (20) has at least one forward direction located in different regions 15 sensor area, a reverse sensor area, a right-hand sensor area and a left-hand sensor area It contains a sensor area.

3. An electric wheelchair system according to claim 1 or 2, whose feature is: foot (22) of its sensors pressure sensor, capacitive sensor, touch sensor, force It consists of a sensor or a combination of these. 20 4. An electric wheelchair system according to any of the previous requirements, Features of the environmental sensing sensor (30) include ultrasonic sensor, infrared sensor, at least one of the following: camera, lidar sensor, radar sensor or range sensor It includes.

5. An electric wheelchair system according to any of the previous requirements, 25 Its feature is that the environmental sensing sensor (30) differs from the chair frame (10). It contains multiple sensor elements facing in different directions.

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