Electric bicycle with Semi-Automatic Braking System.

Our project focuses on two problems. one of them is the rising price of petrol making transportation difficult, other one is the un-consciousness of driver leading to a road accident. We tackle these problems by powering the vehicle i.e bicycle with electricity, designing and fabricating a mechanism

Project Title

Electric bicycle with Semi-Automatic Braking System.

Project Area of Specialization

Mechanical Engineering

Project Summary

Our project focuses on two problems. one of them is the rising price of petrol making transportation difficult, other one is the un-consciousness of driver leading to a road accident. We tackle these problems by powering the vehicle i.e bicycle with electricity, designing and fabricating a mechanism for the semi-automatic braking system equipped with alarm.

Project Objectives

• To make a bicycle that is powered by electricity which is much cheaper than petrol and has zero emmissions thus environmental friendly. 
• To make a bicycle that has semi-automatic braking system equipped with alarm that will prevent accidents due to the un-consciousness of the driver.

Project Implementation Method

1. For the Electric conversion of the bicycle firstly we need to set the range of the bicycle that how many kms it travel on one full charge. In oue case its 50km. Then we will decide which motor to be used for this we need to set the max. weight that it can carry and also the max. speed it can go. We set the max. weight to 140kg and max speed to 40km/h, 36volts 250watt brushless DC Hub motor equipped with planetary gears fullfilled our requirements. Then to control the speed of this motor we needed an electronic speed controller with the specification of 48volt 350watt. now in order to run the motor to travel 50km we needed a lithium-ion battery that should be atleast 36volt and 360watt/hour. for the fabrication of battery we need 50 lithium-ion cells of 3.7 volt and 2000mah and a BMS. To control the speed of the bike we need a 60volt electric throttle. finally to put all the electricals together in one place all safe we need to design a case and get it casted. 
2. For the conversion of the conventional manual disk brake to a semi-automatic brake firstly we need a sensor that can sense the presesnce and absence of an obstacle in front of the bicycle. for that we'll use ultrasonic sensor as it can detect that with the maximum range of 4m and comes cheap. we need an actuator that can actuate the braking mechnism for that we will use high torque stepper motor. In order to drive the motor with the sensor we need a microcontroller i.e Aarduino uno r3 on which we can program to drive the motor with the signal from the sensor. we also need a motor driver module the control the speed and torque of the stepper motor. now finally we need to design a mechanism that can apply the brakes with the stepper motor, for that we'll design a pulley through its hole the motor shft will pass and pulley will rotate as the motor will rotate now we'll pass the brake wire through the specially designed pulley. when an obstacle will come in front of the sensor it will actute the motor and the motor will rotate the pulley the brake wire will be wraped around the pulley and end up pulling the wire which will actuate the brake along with brake an alert alarm will also be activated.

Benefits of the Project

• It will make transportation cheaper.
• Zero emissions will benefit the environment.
• Low maintainance compared to motor bike as it haas less moving parts.
• Prevent accidents due to un-consciousness of the driver. also due to the sudden crossing of pedestrians, animals, or some sort of obstacle.

Technical Details of Final Deliverable

• Electric bicycle equipped with 36v 360watt/hour battery, 36v 250watt brushless DC hub motor, 350watt Electronic speed controller, and a 60v electric throttle.
• Semi-Automatic braking system made up of a ultransonic sensor, Arduino uno r3, high torque stepper motor, stepper motor driver module, alarm, special designed pulley, and a brake wire.
• 3D modelling of the designed pulley.
• Finite element analysis of the designed pulley.

Final Deliverable of the Project

HW/SW integrated system

Core Industry

Transportation

Other Industries

Manufacturing

Core Technology

Others

Other Technologies

Clean Tech

Sustainable Development Goals

Decent Work and Economic Growth, Climate Action

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com