Multi-Channel Carbon Monoxide Detector

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  Title Slide

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  Circuit

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  Circuit in Action

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  Code Used in the Project

What is your idea?

The idea is to create a carbon monoxide detection device that can communicate over multiple mediums in a context-sensitive manner to effectively warn occupants of buildings about potentially dangerous situations regarding excess build-up of carbon monoxide.

What was the process like building your product?

First, we looked through all the sensors available in TinkerCad, and then we tried to come up with a practical product which could be practical in real life, and then tried to build it. We first wrote the code, since that is easier part of this project. Then we wired up the components and tested it with the code. After some hit and trial, we were able to dial in the correct values for all our sensors to line up

Explanation of the hardware/software

Our product uses LEDs, a Winsen gas sensor, a photoresistor, an ultrasonic distance sensor, and a buzzer. This detector constantly checks for gas leaks. If it detects a gas leak then it communicates the danger based on the proximity of occupants which is judged using the photoresistor and ultrasonic sensor. So once the leak is detected it does the following:

If lights are on and people are around i.e. the proximity sensor can sense someone in close vicinity: Turn on LED

If lights are on and people are not around: Turn on LED and sound Buzzer on a low volume with a high frequency

If lights are not on(regardless of the people being around): Turn on LED and sound Buzzer on a high volume with a low frequency since low-frequency sounds propagate farther

What would you add if you could have built this in person? (sensors, hardware, 3D printing/laser cutting etc.)

We would have created a CO detecting ROOMBA-clone whose only purpose is to have a movable platform that can get into tight spaces to check for excess build-ups of CO in small nooks and crannies. It would have some sort of pathfinding to navigate around constrained spaces. We might have even laser-cut a triangular design platform and fixed two motorized wheels and a caster wheel for maximum agility. Finally, we would have implemented an IoT feature where you could map out CO levels in different parts of a room, and get regular updates over WiFi.

Built With

• arduino