i-Q350 RCM
USER MANUAL
VISIBILITY DELIVERED.
PAGE 12 OF 28
3.3. System Components—Readers
i-PORT M350-2
3.3.1.
The i-PORT M350-2 is a reader for the i-Q350 and i-B350 series of
IDENTEC SOLUTIONS’s Response and Broadcast Sensors. Built into a
compact housing, the i-PORT M350-2 reads and writes data to the sensors
at distances of up to 500 meters (1640 feet) on two antennas. Connection
to the host system is established via a RS422 interface, resulting in the
capability to connect up to 8 readers in a Daisy Chain using commercially
available CAT 5 cables and connectors.
A simple master/slave protocol enables data exchange. Not only does the
protocol contain the data received from the sensor but it can also provide
information about the time of data reception, field strength and information
about the number of times the sensor has been received by the reader.
3.4. System Components—Antennas
IDENTEC SOLUTIONS’ antennas are distinguished by their compact design. A variety of antennas can be used,
depending on application. The antennas are differentiated by characteristics such as polarization, apex angle,
and gain. Optimal fit to the reading zone is achieved by the right choice of antenna (characteristics) and
receive sensitivity. As the antennas are passive system elements, no tuning is required, which facilitates
installation and maintenance.
Elliptical Polarized Antennas
3.4.1.
Because of the wide apex angle (120º), a large read zone is achieved,
which is desirable when a large quantity of sensors need to be read at one
time, or when sensors moving at great speeds need to be interrogated.
Since the polarization is elliptical, orientation of the sensor relative to the
antenna is not important; if the sensor is in front of the antenna the sensor
may be polarized horizontally or vertically along the line of sight of the
antenna. Due to its small size and weight, this antenna is very easy to
integrate.