K. S Ramanjaneyulu, A.Das, K.Jitendra, M.Bhanu, 5P.Gowthami, P.Radhika

Abstract

The Pedal-Assist E-Bicycle with a motor supply cutoff system is designed to enhance urban mobility by providing a fully electric riding experience without the need for manual pedaling. The system incorporates a 250W BLDC hub motor powered by a 36V, 12Ah lithium phosphate battery, controlled via an advanced electronic controller and throttle mechanism. Additionally, a real-time obstacle detection and motor cutoff system is implemented using an Arduino Uno, ultrasonic sensor, buck converter, and relay. This feature ensures rider safety by detecting obstacles within a 200cm range and automatically deactivating the motor to prevent collisions. The integration of these technologies results in an efficient, eco-friendly, and intelligent e-bicycle, making it a viable alternative to conventional two-wheelers. Performance analysis includes response time measurements, power consumption efficiency, and braking distance versus speed evaluations. The proposed system contributes to the adv