Bosch Sensortec Community

    cancel
    Showing results for 
    Search instead for 
    Did you mean: 

    BME680 measurements

    Highlighted
    New Poster

    BME680 measurements

    I carried out a measurement over the weekend comparing the BME680 (eCO2 eq.) to an accurate reference device which directly measures CO2 (Air Control 5000). As one can see in the result diagram the BME680 shows in comparison to the reference device about +100-150 ppm  deviation and unrealistic jumps.

    I am using the BME680 on an embedded device over I2C with an A20 Allwinner processor (ARM) running Linux (Debian). The code base is taken from this repository:

    https://github.com/alexh-name/bsec_bme680_linux 

    .. which is incorporating the precompiled BSEC library.

    What reasons could there be to explain the bad quality of the measurements? Any ideas?

    Best regards,

    Dominik Hanko

    1 REPLY 1
    Community Moderator

    Re: BME680 measurements

    BME680 detects VOCs and then calculates an equivalent CO2 value. The calculation can be accurate when human breath dominates air pollutants.

    Icon--AD-black-48x48Icon--address-consumer-data-black-48x48Icon--appointment-black-48x48Icon--back-left-black-48x48Icon--calendar-black-48x48Icon--center-alignedIcon--Checkbox-checkIcon--clock-black-48x48Icon--close-black-48x48Icon--compare-black-48x48Icon--confirmation-black-48x48Icon--dealer-details-black-48x48Icon--delete-black-48x48Icon--delivery-black-48x48Icon--down-black-48x48Icon--download-black-48x48Ic-OverlayAlertIcon--externallink-black-48x48Icon-Filledforward-right_adjustedIcon--grid-view-black-48x48IC_gd_Check-Circle170821_Icons_Community170823_Bosch_Icons170823_Bosch_Icons170821_Icons_CommunityIC-logout170821_Icons_Community170825_Bosch_Icons170821_Icons_CommunityIC-shopping-cart2170821_Icons_CommunityIC-upIC_UserIcon--imageIcon--info-i-black-48x48Icon--left-alignedIcon--Less-minimize-black-48x48Icon-FilledIcon--List-Check-grennIcon--List-Check-blackIcon--List-Cross-blackIcon--list-view-mobile-black-48x48Icon--list-view-black-48x48Icon--More-Maximize-black-48x48Icon--my-product-black-48x48Icon--newsletter-black-48x48Icon--payment-black-48x48Icon--print-black-48x48Icon--promotion-black-48x48Icon--registration-black-48x48Icon--Reset-black-48x48Icon--right-alignedshare-circle1Icon--share-black-48x48Icon--shopping-bag-black-48x48Icon-shopping-cartIcon--start-play-black-48x48Icon--store-locator-black-48x48Ic-OverlayAlertIcon--summary-black-48x48tumblrIcon-FilledvineIc-OverlayAlertwhishlist