D5.4: Multi-sensor system integrated into wearable fabrics
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MOBISERV
FP7 248434
4
Data logger
4.1
Hardware description
The first version of the MOBISERV data logger has been updated with the integration of an
ANT module used for the wireless body array network. In the first version, the respiration
sensor was a strain gauge, in this second version, there is the possibility to use either a strain
gauge or the impedance plethysmography measurement. CSEM has redesigned the user
interface by adding 4 LEDs. The jack connector is now integrated into the housing in order to
increase ergonomics. The embedded signal processing has been improved. This version of
MOBISERV data logger provides the following features:
−
one 4-pin jack connector for textile sensors (ECG and IPG or strain gauge),
−
one USB connector for configuration and data transfer,
−
one micro-SD memory card slot,
−
four status light,
−
one mode switch,
−
one reset switch accessible through a hole.
Figure 13: Data logger overview
4.2
Micro-SD card memory
The device records data into a micro-SD card memory. The device will immediately stop
recording if the memory is removed while in operation. Please note that only the provided
2GB micro-SD Card
(reference: Scandisk
SDSDQ-002G-E11M
or
Kingston SDC/2GB
) have
been fully tested. No support for other brands or memory models can be guaranteed, neither
support for SDHC cards or non-compliant cards. This device has only a very limited support
for a file-system (private data format named sewfps). An SD card used with the MOBISERV