Information Technology Reference
In-Depth Information
RFID
active
tag
Temperature sensor
Smoke detector
RFID
Active
reader
RFID
active
tag
SMS
gateway
Server
RFID
Passive
reader
RFID
active
tag
RFID
Passive
tag
Monitor
ALARM
Fig. 11.4
Logical network architecture
RFID readers and tags [
11, 13
] and comprises a monitor placed at the faculty entrance
where the students can check the presence of the professors they look for. The overall
architecture is depicted in Fig.
11.4
. The scenario is completed with a GSM/GPRS
gateway [
14
], an alarm, and an e-mail sending capability of the servers' software for
on-time notification in case of potential dangerous situation (e.g., fire).
The GUI (also presented in Fig.
11.3
) displays each SPOT's ID with temperature and
smoke values in real time and provides graphs for the values variations over time.
11.3.2
RFID Item Reminder
RFID Item Reminder
is a usage scenario based on the Radio Frequency Identifier
technology, which is commonly used for identification and tracking of objects and
people. The scenario allows users to detect missing items and to ensure they have
all their belongings when leaving homes or offices.
The
RFID Item Reminder
usage scenario is realized using passive RFID tags
[
12
]. The system architecture is shown in Fig.
11.5
. The application distinguishes
two different types of demo applications, i.e.,
permanent
and
non-permanent
demo
application, enabling a 24/7 item observation and a one-time emergency use, respec-
tively. The whole function of the system is enabled by a windows application on the
host computer written in C-Sharp, which uses System.IO.Ports namespace from
Visual Studio for making a connection to the serial RS232 port at which the reader
is connected. The data with the tags' ID and the receiving time is stored in an ADO.
NET database. In order to notify the persons about their missing items, the demo
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