506: Wearable Gas Sensor

To address the need for search and rescue operators to be aware of the air conditions around them, we collaborated with the Central Intelligence Agency to design a wearable monitor that checks surrounding air composition for combustible gases. Existing gas sensors are typically handheld and limit the user’s ability to use both hands during operation. Our monitor was engineered to liberate the user’s hands, allowing them to choose how and where they wear it. 

We split the project into two teams: the gas detection team (Team 506) and the display team (Team 505). Team 506 further split tasks into three main subsystems: the box, the sensor suite and the sensor integration code.

Our computer, voltage regulator and battery are housed in a water- and impact-resistant box designed with heat fins to cool the components. It is compact and lightweight, allowing the user to secure it anywhere on their body without obstructing motion. The sensor suite is connected to the box by a MIL-Spec cannon connector, ensuring a reliable connection. 

The sensor can be positioned anywhere on the body, allowing the user to adjust its positioning for different scenarios and their own comfort. For the most accurate data, the sensors should be worn on the upper body when detecting lighter gases and on the lower body for heavier gases. 

Effective communication with the display team was critical to project success; this is paired with the sensor integration subsystem. To ensure user safety, the monitor must provide the display team with accurate data of the surrounding air quality. The project is successful when both teams integrate the gas sensor into the wearable technology.