Project

# Title Team Members TA Documents Sponsor
48 Universal Automotive Wheel Alignment Sensor System
Isaac Kousari
Michael Danek
Luke Wendt design_document0.pdf
final_paper0.pdf
presentation0.pptx
proposal0.pdf
Every year, automotive manufacturers introduce new technologies into their vehicles that increase efficiency and provide meaningful data to facilitate the diagnosis of potential safety or performance issues. Modern vehicles can sense when routine maintenance – such as brake, oil, or tire replacement - is necessary. Despite these technological advances, sensor systems still lack the ability to tell a user when wheel alignment is needed. Among other issues, misaligned wheels cause vehicles to handle unpredictably and increase tire wear.
Currently, consumers can only check their cars’ wheel alignments by making an appointment with a professional and paying for an alignment, which can range anywhere from $50 to hundreds of dollars. Our goal is to develop an alignment-sensing system that can be mounted on any vehicle by an average consumer. Such a system will enable users to determine if their vehicle(s) need an alignment while saving them time and money.
To implement such a system, we will mount an accelerometer and wireless transmitter to each wheel of a car. The data collected will be transmitted to a central hub attached to the chassis, consisting of a microcontroller for data processing and three additional accelerometers used as reference points to determine the camber, caster, and toe of a vehicle. Once alignment data is collected, it will be cross-referenced with a database of OEM alignment specifications for each manufacturer. Until this system is integrated into existing car diagnostic systems, alignment information will be available to users via a smart phone application.
While alignment detection systems already exist, they only appear in race cars where all sensors are mounted to the vehicle chassis. This system would not be feasible for consumer cars because a large percentage of them have been in accidents, meaning that the chassis can be warped and give inaccurate readings.

Low Cost Distributed Battery Management System

Logan Rosenmayer, Daksh Saraf

Low Cost Distributed Battery Management System

Featured Project

Web Board Link: https://courses.engr.illinois.edu/ece445/pace/view-topic.asp?id=27207

Block Diagram: https://imgur.com/GIzjG8R

Members: Logan Rosenmayer (Rosenma2), Anthony Chemaly(chemaly2)

The goal of this project is to design a low cost BMS (Battery Management System) system that is flexible and modular. The BMS must ensure safe operation of lithium ion batteries by protecting the batteries from: Over temperature, overcharge, overdischarge, and overcurrent all at the cell level. Additionally, the should provide cell balancing to maintain overall pack capacity. Last a BMS should be track SOC(state of charge) and SOH (state of health) of the overall pack.

To meet these goals, we plan to integrate a MCU into each module that will handle measurements and report to the module below it. This allows for reconfiguration of battery’s, module replacements. Currently major companies that offer stackable BMSs don’t offer single cell modularity, require software adjustments and require sense wires to be ran back to the centralized IC. Our proposed solution will be able to remain in the same price range as other centralized solutions by utilizing mass produced general purpose microcontrollers and opto-isolators. This project carries a mix of hardware and software challenges. The software side will consist of communication protocol design, interrupt/sleep cycles, and power management. Hardware will consist of communication level shifting, MCU selection, battery voltage and current monitoring circuits, DC/DC converter all with low power draws and cost. (uAs and ~$2.50 without mounting)