Virtual Booth

ABSTRACT:

 

This project presents the design and development of FLEXIPOSTUR, an automated active back posture monitoring and physical correction device engineered specifically for motorcycle delivery riders. Traditional postural orthotics rely heavily on passive reinforcement, lacking real-time biofeedback and failing to adapt to dynamic occupational movements. The developed wearable mechatronic system addresses these limitations by integrating data from  MPU6050 Inertial Measurement Unit (IMU) and a resistive flex sensor to track multi-planar spinal behavior. An ESP32 microcontroller processes real-time inputs to calculate upper trunk inclination angles and lumbar bending profiles. The system operates on a dual-stage corrective intervention protocol. Upon detecting an ergonomic deviation (slouching thresholds), the system triggers an immediate vibrotactile motor to provide haptic biofeedback, encouraging voluntary postural adjustment. If the user remains in an ergonomic deficit beyond a predefined temporal buffer, a high-torque servo motor activates to mechanically alter strap tension, providing structural correction. To prevent user fatigue and pressure sores, the firmware executes a cyclic operational state machine that alternates between an Active Monitoring Phase and a passive Relief Phase. This active mechatronic approach improves posture compliance, filters environmental vehicle vibrations, and offers a low-cost, replicable solution for preventing occupational musculoskeletal disorders.