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Bosch Sensortec | BME680 Datasheet

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Document number: BST-BME680-DS001-00 Revision_1.0_072017

4. Software and use cases

4.1 BSEC software

BME680 sensor is intended to be used together with Bosch Software Environmental Cluster (BSEC) solution and BME6xy

sensor API to unlock its full potential. The BSEC software features intelligent algorithms which enable use cases such as

indoor-air-quality monitoring using the BME680.

Bosch Sensortec BSEC software is available as a closed source binary which will be made available via a Software License

Agreement (SLA) on the Bosch Sensortec website (https://www.bosch-sensortec.com/bst/products/all_products/BSEC).

Sensor API covers basic sensor communication and data compensation functions and is available as open-source code from

Github (https://github.com/BoschSensortec/BME680_driver).

The key features of the hardware-software system are:



Calculation of ambient air temperature outside of the device (e.g. phone)



Calculation of ambient relative humidity outside of the device



Calculation of indoor air quality (IAQ) level outside of the device

Moreover, the software algorithms handle humidity compensation, baseline as well as long-term drift correction of the gas

sensor signal.

Different power modes for the gas sensor and corresponding data rates are supported by the software solution:



Ultra low power (ULP) mode that is designed for battery-powered and/or frequency-coupled devices over extended

periods of time. This mode features an update rate of 300 seconds and an average current consumption of <0.1 mA



Low power (LP) mode that is designed for interactive applications where the indoor-air-quality is tracked and

observed at a higher update rate of 3 seconds with a current consumption of <1 mA



Continuous (CONT) mode provides an update rate of 1 Hz and shall only be used for use cases that incorporate

very fast events or stimulus

Table 13: BSEC gas sensor power-modes

BSEC power mode

Update rate

Average current consumption

Ultra-low power mode (ULP)

3.3 mHz

0.09 mA

Low power mode (LP)

0.33 Hz

0.9 mA

Continuous mode (for testing purposes

only)

1 Hz

12 mA

BSEC is available in two main variants called solutions: IAQ and ALL solution.

IAQ solution is intended for customers wishing to measure indoor-air-quality, temperature, humidity, and pressure in

embedded devices. IAQ solution can be downloaded from the Bosch Sensortec website (https://www.bosch-

sensortec.com/bst/products/all_products/BSEC).

ALL solution contains the same features as IAQ solution but also includes more complex ambient temperature and humidity

estimation algorithms that will improve temperature and humidity performance in devices that contain many dynamic heat

sources in their design. Such devices are, for example, smartphones containing displays, flashlights, large batteries and

powerful microprocessors. As these advanced algorithms require tailoring to optimize them to a given customer design,

please contact your local Bosch Sensortec representative for support.

The following table describes the available outputs of BSEC. Full descriptions of the outputs and the available interfaces are

available in the integration guide shipped together with the BSEC software.

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