Next-Gen Advanced Smart Wheelchair Customizable RF Control and IoT-Enabled Adaptive Seat Mechanism

Resumen

A new smart wheelchair system to enable mobility, independence, and improve the safety of individuals with physical disabilities is proposed in this paper for IoT. For a holistic assistive solution, the system has electropneumatic (mechanical) actuation, RF control, and real-time remote monitoring over wireless radio frequency. Central to the design is the ESP32 microcontroller module talks to different modules, such as sensors, communication systems, and controllers for adjusting the seat. Vertical seat elevation: A motorized screw jack mechanism, that is likely to be a significant Mechanical innovation in the system. The ability to control seat height is more user-friendly and caregiver independent because the user has to adjust their seat elevation on their own. It also features bed-type tilting for posture correction, through a worm gear which makes sitting for long periods more comfortable. We employ an accelerometer sensor that continuously supervises tilt orientation to maintain the safety of the user in the Wheelchair. This maintains stability in balance and movement since the system begins to correct itself automatically at certain critical detected angles. Wi-Fi-based short-range Wireless control (RF transmitter-receiver module: 433 MHz) is also applied alongside a GPS Module for real-time tracking of the location even in Offline Scenarios. Among these, it's a great connection to the Blynk IoT platform (SIM800L module, GSM-based communication channel) It is an essential feature of this smart wheelchair. The Blynk app is friendly to users and serves as a live interface for manipulating live control and monitoring the system, operating on the smartphone connected to any user or caregiver. ESP32, through GSM communication, can send the tilt angle, seat position, GPS coordinates, and battery life along with motion activity to the Blynk cloud. People can access the parameters of this cloud-to-app interaction anywhere globally, and even take charge of the wheelchair remotely. Real-time alerts are pushed to the Blynk Dashboard in caregiver and emergency categories, Events include fall, instability, or no movement for a long time. Furthermore, the platform has access to manual control via virtual buttons, sliders, and graphs, which also aids in interaction with the wheelchair a bit more and for improved adaptability. This is because, with GSM not requiring local WiFi, it allows for the system to function.