Bisinfotech Magazine November Issue 2021

Page 56

TECH-EXCLUSIVE

Measure What Matters – Sense CO2 to Improve Air Quality in Smart Homes and Smart Buildings We are an indoor generation, spending most of our time in cars, plains, trains or buildings. The level of CO2 indoor has a severe impact on our wellbeing and performance. The health impact can range from headaches, drowsiness, and poor concentration that could lead to reduced productivity to the undetected build-up of airborne viruses, such as Covid-19. The demand for this sensing capability is immense. A recent 2021 market forecast projects the advanced CO2 sensors market to grow by USD 258.87 million during 2021-2025 at a CAGR of over 7% during the forecast period. The growth of

the global construction market is one of the major factors driving the market. System designers have choices for the CO2 sensing technology used in their sensors. Two common choices are non-dispersive infrared (NDIR) sensors and sensors that estimate the concentration of carbon dioxide or eCO2 sensors NDIR sensors consist of an IR light source, a sample chamber, a spectral filter, and reference and absorption IR detectors. As a result, they are relatively large and expensive. In spite of

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