Pressure sensor measures height to +/-5cm

March 04, 2015 // By Peter Clarke
Infineon Technologies AG, has launched a MEMS (Micro Electro Mechanical Systems) pressure sensor for use in mobile and wearable gadgets and IoT (Internet of Things) devices.

The DPS310 is a barometric pressure sensor that can measure relative vertical position to within +/-5cm and thereby enables enhanced navigation, location, well-being, gesture recognition and weather monitoring applications.

The ability to calculate elevation gain and vertical speed suits activity tracking in mobile and wearable health and sports gadgets, while ultra-precise pressure measurement opens up new possibilities for gesture recognition and the detection of rapid weather changes.

The Infineon DPS310 pressure sensor is based on the capacitive sensing principle rather than the piezo-electric principle employed in most other digital pressure sensors. This guarantees high precision across a broad range of temperatures even when temperature changes rapidly.

The DPS310 operates at a supply voltage of 1.7V to 3.6V and icomes in a package measuring 2.0mm by 2.5mm by 1.0mm. Current consumption is 3-microamps at one measurement per second, falling to just less than 1-microamp in standby mode. An integrated FIFO that stores the last 32 measurements helps to further reduce overall system power consumption by extending the time that a host processor can remain in sleep mode between sensor readouts.

The DPS310 measures pressures from 300hPa to 1200hPa and at temperatures from -40°C to 85°C. Sensor measurement data and calibration coefficients are available through the sensor’s I 2C/SPI digital interface.

Engineering samples of the DPS310 are set to be available in May 2015 with volume production planned for 3Q15. Infineon will support design-in with starter kits and evaluation boards.

Related links and articles:

www.infineon.com

News articles:

Pressure sensors withstand harsh environment

Has indoor navigation lost its way?

 Mobile indoor pedestrian navigation design suite ready for Android