Cyclist Active Safety System

Background

The Cyclist Active Safety System (CASSie) was a group project in my Cornerstone of Engineering II class.

It was intended to be a form of an 'active' safety measure when riding a bicycle that worked like blindspot detectors on side mirrors present in some cars. It alerted the rider via LED if there was a car on the left or right blind spot, and the car's relative distance away.

My Work: The Electronics Box

The electronics container was my contribution to the project.

I designed the box to sit underneath the seat of the bike, connected via a hose clamp to the shaft.

Inside the box, I provided space for up to 2 LiDAR and 2 ultrasonic sensors, as well as an Arduino board. Each sensor space was fitted with mounting holes and some clearance for the sensor itself. The Arduino rested on standoffs so it was firmly secured to the box.

The picture on the left shows the electronics box attached to the bike, and the LED wires coming out from the wire management hole.

I designed this box in SolidWorks.

Indicator LEDs on Handlebars

The LEDs indicated a 1, 2, or 3-level distance on the left side of the handlebars, with 3 being the closest. This was a concept design so only the left side was functional.

Inside Electronics Box

This is a top-down view of the electronics box as it was during testing. There is the LiDAR sensor attached on the right side along with the ultrasonic

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Infomercial

Being an academic project, we had to create an "infomercial" displaying our product working and what it does.

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