Project

# Title Team Members TA Documents Sponsor
38 E-Bike Conversion Kit with Regenerative Braking
 Chloe Armstrong
Jace Haas
Lucas Pruett
 Matthew Qi design_document1.pdf
design_document2.pdf
final_paper1.pdf
photo1.jpeg
photo2.jpeg
presentation1.pptx
proposal1.pdf
proposal2.pdf
video1.mp4
# E-Bike Conversion Kit with Regenerative Braking

Team Members:
- Jace Haas (jaceh2)
- Lucas Pruett (lpruett3)
- Chloe Armstrong (chloeca2)

# Problem
Electric bikes can provide both a greener alternative to cars and a faster alternative to bikes. However, current electric bike designs are not without fault. One current problem with electric bikes is their limited range. The average electric bike will only allow riders to travel around 20-40 miles from their stopping point. For some, range is too low to justify purchasing an electric bike. Furthermore, ebikes on the market that have regenerative braking cost upwards of $1000-$2000, which isn’t affordable for most people.

# Solution
One solution to this problem is regenerative braking. Regenerative braking on electric bikes has been shown to, on average, provide a 2-15% boost in range. Even higher range boosts have been observed in more extreme cases of hilly, stop-and-go routes, or when the rider is carrying heavy cargo. Not only does regenerative braking allow for a boost in range, but it also cuts down significantly on brake maintenance. When normal brakes are only needed in case of hard stops, brake wear is significantly reduced. Our idea is to provide an economical and modular option to electrify pre-existing bicycles. The final product will be versatile and flexible. The system will provide throttle motor drive, regenerative braking, and collect data in order to troubleshoot and to measure the range increase from braking.

# Solution Components
## Subsystem 1 - Motor Control
The motor control subsystem takes input from the control unit and modulates motor speed. It is also responsible for controlling regenerative braking.
Example motor:
https://ebikeling.com/collections/ebikeling-ebike-wheels-with-motor-ebikeling-ebike-conversion-kit/products/waterproof-36v-500w-26-geared-front-rear-ebike-motor-wheel-only?variant=32465545429058

Example motor control:
amzn.to/3jcSAMu

## Subsystem 2 - Battery
The battery subsystem takes input from the control unit and modulates battery output and input as needed without damaging the battery or overcharging.
https://www.vladsmall.com/product/48v-20ah-13s3p-18650-electric-bicycle-lithium-battery-bms-for-ebike-electric-vehicle-electric-motorcycle-with-charger/

Lipo cell:
https://www.vladsmall.com/product/48v-20ah-13s3p-18650-electric-bicycle-lithium-battery-bms-for-ebike-electric-vehicle-electric-motorcycle-with-charger/

## Subsystem 3 - Control Unit
The control unit subsystem takes inputs from throttle and brake, and communicates with the other two systems. It could also be used to handle data collection, which would be useful for testing and troubleshooting. We will plan on designing a PCB for this subsystem. A microcontroller can be used for data collection.

Proposed micro controller chip: https://www.microchip.com/en-us/product/ATmega328P


# Criterion for Success
This unit should be able to increase the range by 5% in a city environment.
Controls should allow for regenerative braking systems to be engaged before manual braking.
This unit should be cheaper than available e-bikes with regenerative braking. (<$1500 including bike)


Extra goals
- Dashboard for data display
- Odometer, speedometer, lights
- Variable regenerative braking strength

STRE&M: Automated Urinalysis (Pitched Project)

Gage Gulley, Adrian Jimenez, Yichi Zhang

STRE&M: Automated Urinalysis (Pitched Project)

Featured Project

Team Members:

- Gage Gulley (ggulley2)

- Adrian Jimenez (adrianj2)

- Yichi Zhang (yichi7)

The STRE&M: Automated Urinalysis project was pitched by Mukul Govande and Ryan Monjazeb in conjunction with the Carle Illinois College of Medicine.

#Problem:

Urine tests are critical tools used in medicine to detect and manage chronic diseases. These tests are often over the span of 24 hours and require a patient to collect their own sample and return it to a lab. With this inconvenience in current procedures, many patients do not get tested often, which makes it difficult for care providers to catch illnesses quickly.

The tedious process of going to a lab for urinalysis creates a demand for an “all-in-one” automated system capable of performing this urinalysis, and this is where the STRE&M device comes in. The current prototype is capable of collecting a sample and pushing it to a viewing window. However, once it gets to the viewing window there is currently not an automated way to analyze the sample without manually looking through a microscope, which greatly reduces throughput. Our challenge is to find a way to automate the data collection from a sample and provide an interface for a medical professional to view the results.

# Solution

Our solution is to build an imaging system with integrated microscopy and absorption spectroscopy that is capable of transferring the captured images to a server. When the sample is collected through the initial prototype our device will magnify and capture the sample as well as utilize an absorbance sensor to identify and quantify the casts, bacteria, and cells that are in the sample. These images will then be transferred and uploaded to a server for analysis. We will then integrate our device into the existing prototype.

# Solution Components

## Subsystem1 (Light Source)

We will use a light source that can vary its wavelengths from 190-400 nm with a sampling interval of 5 nm to allow for spectroscopy analysis of the urine sample.

## Subsystem2 (Digital Microscope)

This subsystem will consist of a compact microscope with auto-focus, at least 100x magnification, and have a digital shutter trigger.

## Subsystem3 (Absorbance Sensor)

To get the spectroscopy analysis, we also need to have an absorbance sensor to collect the light that passes through the urine sample. Therefore, an absorbance sensor is installed right behind the light source to get the spectrum of the urine sample.

## Subsystem4 (Control Unit)

The control system will consist of a microcontroller. The microcontroller will be able to get data from the microscope and the absorbance sensor and send data to the server. We will also write code for the microcontroller to control the light source. ESP32-S3-WROOM-1 will be used as our microcontroller since it has a built-in WIFI module.

## Subsystem5 (Power system)

The power system is mainly used to power the microcontroller. A 9-V battery will be used to power the microcontroller.

# Criterion For Success

- The overall project can be integrated into the existing STRE&M prototype.

- There should be wireless transfer of images and data to a user-interface (either phone or computer) for interpretation

- The system should be housed in a water-resistant covering with dimensions less than 6 x 4 x 4 inches

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