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48 Universal Automotive Wheel Alignment Sensor System
Isaac Kousari
Michael Danek
Luke Wendt design_document0.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.

Assistive Chessboard

Robert Kaufman, Rushi Patel, William Sun

Assistive Chessboard

Featured Project

Problem: It can be difficult for a new player to learn chess, especially if they have no one to play with. They would have to resort to online guides which can be distracting when playing with a real board. If they have no one to play with, they would again have to resort to online games which just don't have the same feel as real boards.

Proposal: We plan to create an assistive chess board. The board will have the following features:

-The board will be able to suggest a move by lighting up the square of the move-to space and square under the piece to move.

-The board will light up valid moves when a piece is picked up and flash the placed square if it is invalid.

-We will include a chess clock for timed play with stop buttons for players to signal the end of their turn.

-The player(s) will be able to select different standard time set-ups and preferences for the help displayed by the board.

Implementation Details: The board lights will be an RGB LED under each square of the board. Each chess piece will have a magnetic base which can be detected by a magnetic field sensor under each square. Each piece will have a different strength magnet inside it to ID which piece is what (ie. 6 different magnet sizes for the 6 different types of pieces). Black and white pieces will be distinguished by the polarity of the magnets. The strength and polarity will be read by the same magnetic field sensor under each square. The lights will have different colors for the different piece that it is representing as well as for different signals (ie. An invalid move will flash red).

The chess clock will consist of a 7-segment display in the form of (h:mm:ss) and there will be 2 stop buttons, one for each side, to signal when a player’s turn is over. A third button will be featured near the clock to act as a reset button. The combination of the two stop switches and reset button will be used to select the time mode for the clock. Each side of the board will also have a two toggle-able buttons or switches to control whether move help or suggested moves should be enabled on that side of the board. The state of the decision will be shown by a lit or unlit LED light near the relevant switch.

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