Mohammed Allahyani, Khalid Alghamdi, Yu Sun, James Sigler

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Presentation transcript:

Mohammed Allahyani, Khalid Alghamdi, Yu Sun, James Sigler Motorized Tricycle Mohammed Allahyani, Khalid Alghamdi, Yu Sun, James Sigler

Outline Introduction Problem Overview Subsystems and Possible Solutions Cadence Sensor Torque Sensor Display Motor Controller Recap James

Introduction Name of project: Motorized Tricycle Client: Dr. Jane Scott Faculty mentor: Dr. Kyle N. Winfree

Speed and Cadence Sensors Determine speed of tricycle Calculate number of pedal revolutions per minute GPS to determine speed? why The speed sensor is accurate than GPS, especially in places where you may lose signal. Also, the sensor allows you to gather speed and distance data. GPS device does not. But, we found three options for Speed/Cadence sensors Garmin Polar Wahoo

Speed and Cadence Sensors # Polar Wahoo Garmin Cost 1 2 3 Ease of use 4 Ease of code Efficiency Total 10 11 Easy-to-install - Simply attach the sensors and ride. With no magnets or other exposed parts to line up, these sensors are easy to install, maintain and move between bikes. Speed sensor - Attaches to the hub and self-calibrates with your Garmin Edge to give you accurate speed and distance Cadence sensor - Fastens to any crank arm size and measures pedal strokes per minute so you can get the most out of your training.

Torque Sensors: To determine how much power the motor need. There are different types of Torque sensors: A torque sensing bottom bracket A Ring of magnets:

Torque Sensor (Ring of Magnet) : Widely Use Standard Connections Easy installation Powerful Functions

Display Subsystem Requirements: The model that the user choose to provide power assist Speed in miles/hour Miles remaining before recommended charge Electricity remaining Charging indicator, and charge complete indicator

Devices for designing display system Garmin Bike Speed Sensor Arduino Uno R3 Microcontroller Paxcoo 4 Pieces Breadboards(Jumper Wires) LCD 2004 Module

Solutions to display speed information Collect pulse signal Signal Collection analog signal Microcontroller digital signal LCD I/O interface(pin) I/O interface(pin) Code for calculating speed

Solutions to display electricity remaining Collect battery voltage Battery Microcontroller LCD Electricity digital signal analog signal I/O interface(pin) AD converter function

Motor Controller Controlling motor speed Three possible solutions Motor Package Arduino Build 3rd Party

Motor Controller *Rankings determined best out of three solutions Motor Package Arduino Build 3rd Party Cost 1 3 2 Ease of use Ease to code Efficiency Total 9 6

Recap Cadence Sensor Torque Sensor Display Motor Controller

Thank You More info visit https://www.cefns.nau.edu/capstone/projects/EE/2018/MotorizedTrike/

References [1] M. Balmer, “History of Pedal-Assisted Bicycles”, Electric Bike Association, 2016. [Online] [2] J. Turner, “Understanding Electric Bike Motors with Jim Turner of Optibike,” 2014. [Online]. Available: https://www.youtube.com/watch?v=KL7tTUZCFDs. [Accessed: 01-Oct-2017]. [3]  J. D. Goodman, “An Electric Boost for Bicyclists,” New York Times, Jan. 2010. [4] Bill Cummings, “Why Don’t More E Bikes Use Regenerative Braking?,” Evelo, 2017. [Online]. Available: https://www.evelo.com/bikes-use-regenerative-braking/. [Accessed: 05-Oct-2017]. [5] Hook slide: http://www.ebikeclass.com/buying-guides/facts-electric-bikes/