Bosch Sensortec has introduced a barometric pressure sensor that can provide altitude tracking in wearables, hearables or internet of things (IoT) devices.
The sensor could be used in applications such as fitness tracking, fall detection, indoor localization and navigation, and more.
The BMP581 can detect an altitude change of just a few centimeters so it is able to monitor movement in fitness applications down to the level of individual pull-ups or push-ups. It can also provide location information for indoor localization, navigation and floor detection for data for emergency call requirements.
Additionally, the sensor can improve flight stability and landing accuracy in drones or help detect water levels in household appliances to avoid flooding.
The sensor details include:
- Accuracy of +/-0.06 hPa and a typical absolute accuracy of +/-0.3 hPa.
- Full accuracy is available over a wide measurement range from 300 hPa to 1100 hPa.
- A typical temperature coefficient offset (TCO) of +/-0.5 Pa/K.
- An RMS noise of 0.08 Pa at 1000 hPa (typical).
- Long-term drift over 12 months is only +/-0.1 hPa.
The BMP581 draws 85% less current, 80% less noise and TCO is reduced by 33% compared to the previous generation of Bosch barometric pressure sensor.
