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    BME688 - How to interpret the output curves in AI-Studio and measure the intensity of a single gas?

    BME688 - How to interpret the output curves in AI-Studio and measure the intensity of a single gas?

    KK321
    Member

    Hello - I'm experimenting with the BME688 gas sensor. I want to measure the intensity of a single gas. Is this possible with the BME688 sensors? I operate the sensor via a Raspberrypi 4B and use the BME688 breakout board: So a single sensor. For the evaluation I use AI-Studio from Bosch. How can I interpret the output curves? Which of the curves in particular is the VOCs evaluation curve?! In short: Is it possible to measure not a gas mixture, but a single gas, i.e. its intensity and then learn fingerprints from it for the AI? Can I also evaluate threshold values with the sensor?

    3 REPLIES 3

    BSTRobin
    Community Moderator
    Community Moderator

    Hi KK321,

    Using BME688 and running BSEC software, it can recognize gas types, such as detecting that the current environment is normal air or CO, but does not support output intensity.

    Hi BSTRobin -                                                                                                                                                                                                                                                                                                                        I've imported some raw data from the BME688 into an Excel sheet and I'd like to understand what's what now?! I've opened a file saved on the Raspberry after stopping the Phythonscript. This file is unsally imported to the Bosch AI-Studio - but now imported to Excel: What do the numbers represent exactly - what does each value mean and in particular what are the gas sensor (VOC) values?! Please look at my pictures below. Could you please commed the values? Thank you!

    Some more details of the Excel sheet in the picture below.

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