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ostaquet / Arduino-MQ131-driver

Arduino driver for gas sensor MQ131 (Ozone / O3)
MIT License
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Sensitivity curves #37

Closed morfeus2 closed 3 years ago

morfeus2 commented 3 years ago

Hello, thanks for the project, it's very interesting. I would like to ask you: where did you get the calibration values presented in "Sensitivity curves" spreadsheet?

dzvid commented 3 years ago

@morfeus2 You mean the values in the tables?

morfeus2 commented 3 years ago

Yes, exactly Rs/R0 vs ppm, Influence of Temperature/Humidity etc... Were they measured by hand from the graphs in the official datasheet or something better?

dzvid commented 3 years ago

It was measured from datasheet curves, getting some points in the curve and applying linear regression to get sensor equations. As said here: #29

ostaquet commented 3 years ago

Indeed, as @dzvid wrote, the data points are coming from the data sheet and I applied a regression to get the best sensor equation.