i-MARK 2 / i-MARK 3
USER
MANUAL
VISIBILITY DELIVERED.
PAGE 13 OF 55
3
TECHNICAL OVERVIEW
3.1
The Marker-Technology
The Marker technology is a combination of 2 types of wireless data transmission:
1. The fixed Position Marker provides an inductive loop. The LF signal in the loop contains a position
ID. A tag that recognizes the Position Marker’s loop field reads and stores this ID.
2. Long-Range-RFID is then used to communicate with and identify the tag and read the Position
Marker ID that equals the position of the tag.
3.2
The Position Markers
There are several Position Markers of different design. Their basic function is always the same:
The Position Marker operates an inductive loop and transmits its preconfigured ID every 20 ms.
The difference is that some Position Markers have a built-in antenna (e.g. compact unit i-MARK 2)
whose antenna loop has a fixed shape and can be adjusted in its 3D size. On the other hand there are
Position Markers that operate an external customized loop antenna (e.g. the i-MARK 3) to fit to the
desired application.
Typically these Markers are configured once during initial installation and keep on working without
need for maintenance.
Marker Loop
ILR
i-PORT
Antenna
Transponder
868/915 MHz
up to 100 m
Inductive Loop
i-MARK
125 kHz
up to 3 m
Host-PC
+