is unavoidable but derogates the usability of the given solution
due to the need of the manual Bluetooth configuration. Table I
compares the properties of Bluetooth and NFC.
3) Goal of This Study: The aim of this paper is to develop a
concept that solves the problem of integrating a medical sensor
device providing a huge amount of data to an existing telemonitoring
system based on currently available NFC handsets.
Touch-based intuitive data acquisition should be enabled even
for live data streams and arbitrary amounts of data.
II. METHODS
A. Technical Concept
The intended concept was based on a combination of Bluetooth
and NFC technology where NFC was used to activate
Bluetooth and to exchange the information needed to establish
a Bluetooth link. The first part of this setup was given by a
mobile phone that provided both Bluetooth and NFC capability.
The following core components have been selected to realize
the second part for NFC supported Bluetooth communication
(see Fig. 1).
1) Bluetooth module to communicate with the mobile phone
via serial port profile (SPP) in transparent mode;
2) RFID tag to store essential data (see Table II) used for
establishing a Bluetooth connecting
3) field detector to trigger the activation of Bluetooth;
4) microcontroller (μC) to host the stack that manages the
Bluetooth communication and to execute the main application
gathering the data from analog and digital inputs.