By Steffen Leonhardt, Thomas Falck, Petri Mähönen
This booklet comprises papers from the foreign Workshop on Wearable and Implantable physique Sensor Networks, BSN 2007, held in March 2007 on the college health center Aachen, Germany. issues lined within the quantity comprise new clinical measurements, shrewdpermanent bio-sensing textiles, low-power instant networking, approach integration, scientific sign processing, multi-sensor facts fusion, and on-going standardization actions.
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Additional resources for 4th International Workshop on Wearable and Implantable Body Sensor Networks (BSN 2007): March 26-28, 2007 RWTH Aachen University, Germany (IFMBE Proceedings)
In this case, ZGel constitutes a resistive component and presents, as a consequence, a similar result with the Standard BIS electrodes (Z = ZBody). (6) I meas (I meas − I Bias ) ⋅ Z Body + I meas ⋅ 2 ⋅ Z Skin− Electrode I meas (7) This effect can be better observed with the use of textile electrodes without gel, with lower contact pressure and with higher contact pressure < 5 min. Even the time spent wearing the electrodes improved the result (what we call coupling time). After about five minutes the behaviour of the electrodes improved and the observed measured impedance reproduces equation 6 better than 7 without the necessity of using gel.
87(3):1087-196. Beckmann L, Medrano G, Leonhardt S (2006) Tragbares Bioimpedanz-Spektroskopie Gerät. Dreiländertagung BMT 2006, ETH Zürich, 6 – 9 September 2006. Medrano G, Zimmermann N, Gries T, Leonhardt S (2006) Bioimpedanz-Spektroskopie (BIS) mit textilen Elektroden. Dreiländertagung BMT 2006, ETH Zürich, 6 – 9 September 2006. Gabriel C, Gabriel S, Lau R W (1996) The dielectrical properties of biological tissues: II. Measurements in the frequency range 10 Hz to 20 GHz. In: Physics in Medicine and Biology 41.
1 . The pKa shift is due to the dye being in solid form once immobilized onto the textile. (a) Skin Sweat pH sensitive fabric Moisture wicking fabric Figure 3 Textile pH colorimetric sensor with optical sensing configuration To detect the colour change of the sensing textile a paired emitter-detector LED configuration was used. A red LED (660nm) was used as the light source (Kingbright, L934SRCG). This absorbance at this wavelength varies as the sensor changes from yellow to blue. An LED is also used as a light sensor.