An industrial WLAN
system makes it possible to track miners
and mobile equipment throughout a mine system,
and also monitor different environmental
conditions such as toxic gas, humidity,
and fallen rocks using sensors.
The foundation of the system is several
AWK-6222s’ with outdoor dual RF design installed
as access points along the underground line,
and connected to each other with Ethernet
cables. One AWK-6222 is set up as an AP
to communicate with the above-ground control
room located one kilometer away from the
mine entrance.
Mining operations include mobile machinery,
such as mine wagons, large wheel loaders,
and off-highway mining trucks. To wirelessly
monitor and track this array of vehicles
and equipment, each unit is fitted with
one AWK-6222 configured as a client. They
can connect to PLCs, GPS devices, and video
cameras over cabled Ethernet using unmanaged
EDS-205A switches.
Moxa's WLAN wireless products empower the
mine system with exceptional wireless performance.
Fast roaming allows seamless handover from
one access point to another over wide areas.
The AWK-6222 also features dual RF modules
to provide the security of redundant wireless
links, and the 4.9 GHz operation prevents
possible radio interference.
Video surveillance is important due to
the many possible blind spots at a complex
mine site. A video data rate of up to 15
Mbps is required to guarantee that video
data is transferred to the control center
in real time. |
WLAN standards: IEEE 802.11a/b/g
