Multisensor measurement devices

12 May 2010 Analogue, Mixed Signal, LSI

STMicroelectronics has introduced the first members in its iNEMO family of multisensor inertial measurement unit (IMU) devices. The integration of a variety of motion, magnetic, pressure and temperature sensors with a 32-bit processing unit and dedicated software will enable enhanced functionality in a wide variety of applications, including gaming, human machine interface, robotics, portable navigation devices and patient monitoring.

Built upon ST’s portfolio of MEMS devices, members of the iNEMO family offer combinations of 3-axis sensing of linear, angular and magnetic motion with temperature and barometer/altitude readings, representing ST’s first IMUs with 10° of freedom. The modules contain a memory card socket for data-logging and dedicated connectors for wired/wireless connectivity, including USB, ZigBee or GPS.

The first iNEMO module – STEVAL-MKI062V1 – integrates six different sensors and a 32-bit microcontroller. It is available as a 4,5 x 5 cm evaluation board with a firmware library, a PC graphical user interface, and a set of software solutions for different applications.

The most recent iNEMO product (v2) represents a further step in miniaturisation and runs a sophisticated sensor fusion algorithm (attitude heading reference system) to provide static and dynamic orientation and inertial measurements.

This iNEMO v2 integrates five ST sensors – a 2-axis roll-and-pitch gyroscope (LPR430AL), a single-axis yaw gyroscope (LY330ALH), a 6-axis geomagnetic module (LSM303DLH), a pressure sensor (LPS001DL) and a temperature sensor (STLM75). All the sensors and the AHRS algorithm are managed by an onboard STM32 microcontroller.

For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za

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