SS05a-21 Indoor Air Quality Monitoring and Improvement

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SHEN, Shanpu(@eeshanpu)
January 19, 2022 3:42 pm

This is an interesting project. Have you consider using more sensors to detect other kinds of gas beyond CO2? Is your design extendable to detect PM2.5 in the air?

ZHENG, Jiakun(@jzhengaq)
January 19, 2022 3:52 pm
Reply to  SHEN, Shanpu

Thanks for your interest. There will be more sensors involved for the next work, which is desktop air quality monitor and currently under developing already. CO2 is chosen as a beginning because our field research concluded that most people never realize the issue of high indoor CO2 level. What’s more, during the pandemic, ventilation is an extremely critical thing for a public indoor invironment, and CO2 is the best factor to reflect the ventilation situation as human keep breathing out CO2.

Last edited 10 months ago by ZHENG, Jiakun
CAO, Xuanyu(@eexcao)
January 19, 2022 3:24 pm

What’s the main technical challenge of implementing this air quality monitoring system, since the CO2 sensors are already available?

ZHENG, Jiakun(@jzhengaq)
January 19, 2022 3:37 pm
Reply to  CAO, Xuanyu

Thanks for your comment. In fact, the CO2 sensor is just for collecting data for the system. The main technical challenge is to build a closed-loop control ventilation system to maintain a reasonable CO2 level while minimizing the negative effects to the energy efficiency of air-conditioners. Also, since this is a joint-FYP for two majors (ECE and ISD), the project started a bit later than regular schedule and thus only the sensor part is presented at the moment.