17. jan. 2011

Across my desk (1)

… ultra low power (ULP) RF specialist Nordic Semiconductor ASA (OSE: NOD) and ANT Wireless announce their participation in an “eWellness” cycling performance monitoring exhibit with leading consumer electronics and technology companies today at CES …
… performance data, such as cadence, power, speed, and heart rate, is transmitted from the wireless sensors using ANT+ communication, to Pioneer’s ANT+-equipped “cyclocomputer” (cycling computer) that has 3G network capability. Cyclocomputer is equipped with map and other helpful applications for training and weight control, and displays real-time performance data from the network of ANT+ sensors on the bike …

… at the recent Tour de France, the world’s most prestigious cycling event, ANT+ formed a critical link in a system that enabled Internet users to track the performance of individual HTC Columbia riders in real time …
… ANT+’s interoperability between the SRM ANT+ sensors and HTC’s Android-based smartphones …
… HTC Columbia team cyclists used ANT+ (running on Nordic’s ANT chips), coin cell powered monitoring devices communicating with an HTC Legend phone carried beneath the bike’s seat …
… Android-powered smartphone runs a Google MyTracks application combining sensor data with GPS information and transmitting via the cellular network to the Internet …

… CC2530ZNP provides a simple, off-the-shelf ZigBee solution without requiring designers to learn the complexities of a full ZigBee stack …
…  CC2530ZNP supports TI’s Z-Stack software and SimpleAPI, which has only 10 calls to learn and communicates to host processor via an SPI or UART command interface …
… compatible devices from TI include the CC2590 and CC2591 2.4-GHz analog front ends (range extenders), MSP430 ultra-low-power microcontrollers and Stellaris ARM processors …

… Microsoft Project Natal operates through a sensor bar, placed beneath or above the TV. But that’s where the similarities end. Project Natal combines an RGB camera, a depth sensor (consisting of an infrared projector combined with a monochrome CMOS sensor), and a multi-array microphone to enable full-body 3D motion capture, facial recognition, and voice recognition …

… classic Bluetooth technology is a "connection oriented" radio with a fixed connection interval ideal for high activity connections like mobile phones linking with wireless headsets. In contrast, Bluetooth low-energy technology employs a variable connection interval that can be set from a few milliseconds to several seconds depending on the application. In addition, because it features a very rapid connection, Bluetooth low-energy technology can normally be in a "not connected" state (saving power) where the two ends of a link are aware of each other, but only link up when absolutely necessary and then for as short a time as possible …
… three characteristics of Bluetooth low-energy technology that underlie its ULP performance: maximized standby time, fast connection, and low peak transmit/receive power …  to minimize time on air it employs only three "advertising" channels to search for other devices or promote its own presence … radio switches between channels in a pseudo-random pattern using the Adaptive Frequency Hopping (AFH) technology pioneered by Classic Bluetooth … another reason why Bluetooth low-energy technology spends minimal time on air is because it features a raw data bandwidth of 1Mbps – greater bandwidth allows more information to be sent in less time …
Profiles optimize a generic Bluetooth low energy chip for a specific application such as Personal User Interface Devices (PUID) (such as watches), Remote Control, Proximity Alarm, Battery Status and Heart Rate Monitor. Other health and fitness monitoring profiles such as blood-glucose and -pressure, cycle cadence, and cycle crank power will follow …



…  bqTELSA development kit includes a single-channel transmitter, a direct-charge receiver and associated magnetics for applications requiring 5 watts of power or less …

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