STMicroelectronics has introduced MotionBee, a complete, ready-for-use platform that combines motion sensing with ZigBee wireless technology in a single compact module. Boasting low power consumption and a high level of integration, MotionBee enables system developers to quickly build wireless sensor networks for remote motion recognition and tracking in many different application areas, including healthcare, security, industrial control and environmental monitoring.
The first-generation MotionBee module integrates ST’s market-proven 3-axis digital-output MEMS accelerometer with a ZigBee platform from Ember that includes the EM250 system-on-chip, a 2,4 GHz, IEEE 802.15.4-compliant radio transceiver and processor, together with the EmberZNet PRO ZigBee networking software. The module detects accelerations in the selectable range of ±2 G and ±6 G and transmits the information to a central connection point (star topology) or every other node (mesh topology) in a ZigBee wireless network. The module is fully programmable and its small size of 49 x 27 x 5 mm makes deployment feasible in applications such as wearable medical or sports equipment.
Addressing the specific requirements of remote sensing and control systems, ZigBee technology enables the implementation of broad-based wireless mesh networks that are able to run for months on inexpensive primary batteries, representing a viable alternative to costly hard-wired systems. The first-generation MotionBee modules are optimised for designs that require long battery life, a low external component count and a reliable, proven, industry-standard networking solution.
ST’s remote motion control platform enables wireless sensor networks in a variety of existing and emerging applications, such as vibration monitoring and detection in different indoor and outdoor environments, automated navigation systems, or bio-sensor networks in remote-healthcare scenarios. The first MotionBee device, the SPMB250-A1, is available now. An evaluation kit is also available, with two pre-programmed modules and a ZigBee dongle for integration with a PC.
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