Ambient Intelligence: European Conference, AmI 2007, by Enrico Rukzio, Gregor Broll, Karin Leichtenstern, Albrecht

By Enrico Rukzio, Gregor Broll, Karin Leichtenstern, Albrecht Schmidt (auth.), Bernt Schiele, Anind K. Dey, Hans Gellersen, Boris de Ruyter, Manfred Tscheligi, Reiner Wichert, Emile Aarts, Alejandro Buchmann (eds.)

This e-book constitutes the refereed complaints of the 1st ecu convention on Ambient Intelligence, AmI 2007, held in Darmstadt, Germany, in November 2007.

The 17 revised complete papers offered including 5 learn experiences have been conscientiously reviewed and chosen from forty eight submissions. The papers are equipped in topical sections on mobility and sensing, purposes of AmI, job and site sensing, AmI and synthetic intelligence, AmI middleware and infrastructure, and interplay with the surroundings.

The e-book is rounded off by way of a bit on case stories and classes discovered, offering a excessive point choice of present examine reviews and papers that mirror an important actions of present ambient intelligence research.

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Extra info for Ambient Intelligence: European Conference, AmI 2007, Darmstadt, Germany, November 7-10, 2007. Proceedings

Sample text

While we realized adjacency activations would occur, the extent to which the problem was experienced in a real home was surprising. These false positive activations not only reduce the battery life of the sensor nodes (due to unnecessary wireless broadcasts) but also may negatively affect the performance of ubiquitous computing applications that depend upon the sensor data. The second anticipated but underestimated challenge is that the magnitude and temporal characteristics of the motion, acceleration, vibration, or tilt/rotation generated by household objects is dramatically different among objects.

Larson the μC external interrupt input to wake it up whenever the voltage generated by the piezoelectric film is greater than VTH. VTH was set in practice to maximize the sensor’s response to external movement/vibration while preventing self-triggering by installing a variable resistor at R2 and R3. 025g. The comparator and voltage reference (MAX9015) are always on but consume only 1μA. S company (including PWB tooling, masks, stencils, soldering, and no electrical testing). This adds only 13% to the cost of the entire sensor board but substantially improves battery life.

4GHz transceiver, a 2-axis ±2G accelerometer (ADXL202, $12 US), and a MOSFET switch to power cycle the accelerometer from a CR2032 coin cell battery. g. ADXL330) at the time of development of the adopted sensing infrastructure. However, as described later, the 2-axis version is sufficient to achieve good performance in recognizing object usage in practice, although newer designs could utilize the new ADXL330 3-axis accelerometer without significant cost change. This basic sensor node was designed to recognize object usage by simply thresholding the 2-axis acceleration signal sampled at 10Hz against a predefined acceleration value [10].

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