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62 Autonomous Pothole Detection and Cataloging for Bikes
Andy Sun
Harshvardhan Bhatia
Jesse Chen
Xinrui Zhu design_review
Title: Autonomous Pothole Detection and Cataloging for Bikers

Link to original idea thread:

Potholes are an issue which plague cities all over the country and over the world. While damaging to cars, potholes can also be particularly dangerous, even fatal, for bikers and can lead to millions of dollars in lawsuits for a city if not patched [1].

This product would attach onto a bike's handlebars and utilize both computer vision techniques and accelerometer/ultrasonic sensor data to detect potholes and automatically record their location (via GPS) to a database that can be used by cities to determine problem areas. In addition, there would a button that a biker could press to add a pothole if it isn't automatically detected. There would also be a local copy of the database on the device which would enable the device to alert the user if they were approaching an area with potholes reported. An armband that the user wears would issue both a haptic and hearable alert.

Current embedded computer vision techniques have been tested at around 70-80% accuracy in broad daylight conditions [2], therefore we cannot entirely rely upon them. However, it does provide a means of cataloging potholes that bikers do not run over and can even serve as a an early warning system if we are able to detect a pothole early enough. The accelerometer and ultrasonic sensors can serve to catalogue potholes at night and hard-to-see potholes during the day, and in general have much better accuracy. In addition, we can try to catalogue the potholes based upon their severity, which we would estimate based upon our sensor data. We may need to have two MCU's: one dedicated for image processing and the another handling everything else.

There are somewhat similar products out there for cars (no commercial products from what I can tell, only devices created for research),, but no such products for bikes and bike paths. A pothole can be much more devastating for a biker than for a vehicle driver, so we believe this is a good problem to focus on.


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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