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Bluetooth® Smart radio with record battery lifetime
Radio paves the way to new personal health, lifestyle and smart homes applications
Autonomous wireless sensor systems running on batteries or energy harvested in the environment can be used for personal health monitoring, smart homes, intelligent cars, and for monitoring machines, buildings or the environment. However, practical applications for wireless sensor networks largely depend on their size, autonomy, and power consumption.
Imec and Holst Centre's Bluetooth® Smart compliant 2.4GHz short-range radio is 3-5 times more power efficient compared to today's available Bluetooth® Smart radios that consume between 50 and 85 percent of the overall power consumption of a sensor system. The 1.9nJ/b radio achieves a DC power of only 3.8mW at 1.2V supply for the receiver and 4.6mW for the transmitter. The measured receiver (RX) noise figure is 6dB, resulting in an excellent sensitivity of -98dBm for Bluetooth® Low Energy (BLE).
Wicentric's software solution includes exactLE Link, a portable and efficient Link Layer for Bluetooth® Smart, and Wicentric's qualified exactLE Stack and Profiles. Wicentric's exactLE Link is designed for efficient execution on low power CPU cores running at low clock speeds making it well suited for ultra-low power system-on-chip silicon designs. The exactLE Stack and Profiles support 18 standard Bluetooth® Smart profiles and services for products like physical activity monitors, healthcare devices, and smart watches. The complete software solution has an extremely small memory footprint, for example the combined code size of the link layer, protocol stack, and profile for a heart rate sensor can be as low as 45 kilobytes on an ARM Cortex-M0 CPU, running at 12 to 16 MHz.
Combining imec and Holst Centre's ultra-low power Bluetooth Smart compliant radio with Wicentric's efficient and comprehensive Bluetooth Smart software delivers a complete and highly integrated solution that is available for licensing as of today.
About Holst Centre
Holst Centre is an independent open-innovation R&D center that develops generic technologies for Wireless Autonomous Transducer Solutions and for Systems-in-Foil. A key feature of Holst Centre is its partnership model with industry and academia around shared roadmaps and programs. It is this kind of cross-fertilization that enables Holst Centre to tune its scientific strategy to industrial needs.
Holst Centre was set up in 2005 by imec (Flanders, Belgium) and TNO (The Netherlands) with support from the Dutch Ministry of Economic Affairs and the Government of Flanders. It is named after Gilles Holst, a Dutch pioneer in Research and Development and first director of Philips Research.
Located on High Tech Campus Eindhoven, Holst Centre benefits from the state-of-the-art on-site facilities. Holst Centre has over 150 employees from around 25 nationalities and a commitment from more than 30 industrial partners. Visit us at www.holstcentre.com.
Wicentric is a leader in Bluetooth low energy software solutions. In 2010, Wicentric became the world's first independent protocol stack provider to receive Bluetooth 4.0 qualification. Wicentric's exactLE product line provides Bluetooth Smart semiconductor makers with a comprehensive baseband-to-application software solution that is robust, efficient, and easy to use. Wicentric is located in San Diego, California. For more information, visit www.wicentric.com.
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