Forklift Trucks: Driver Assistance in Narrow Aisles Thanks to
RFID
Task
The number of accidents resulting
in damage to property and bodily injury is higher than average at junctions and
in tight passages in distribution centers and warehouses. Users are interested
in finding ways of avoiding such accidents. A simple method is to limit the
maximum speed of the vehicle in certain areas, or to restrict the lifting
height.
Concise Description
RFID transponders in the
warehouse floor can assist forklift truck drivers in critical situations.
Attaching an RFH6xx high frequency read/write device underneath
a forklift truck enables it to read the transponders and pass the position
information on to the vehicle control system.
Implementation
Disc transponders that can easily
be lowered into the warehouse floor can be used. The typical axle height for
narrow aisle vehicles is 35 mm. The RFH6xx is attached underneath the forklift
around 50 mm from the ground (= reading distance to the transponder).
The RFH6xx reliably reads 12 bytes (3 blocks) from the transponders in the floor at vehicle speeds of 4 m/s. The transponder data read out is passed on to the vehicle control unit via the integrated CANopen interface. The control unit decides on suitable measures on the basis of the position information received from the transponders. At the end of an aisle or at a junction this may mean reducing the speed; when passing through gateways or if there are obstacles under the ceiling it may mean limiting the lifting height.
The RFH6xx reliably reads 12 bytes (3 blocks) from the transponders in the floor at vehicle speeds of 4 m/s. The transponder data read out is passed on to the vehicle control unit via the integrated CANopen interface. The control unit decides on suitable measures on the basis of the position information received from the transponders. At the end of an aisle or at a junction this may mean reducing the speed; when passing through gateways or if there are obstacles under the ceiling it may mean limiting the lifting height.
Customer Benefits
The RFH6xx is ideal thanks to its
housing, which is suitable for industrial applications. It includes an
integrated antenna, signal and data processing and integrated CANopen
interface. This compact unit can be integrated simply even in the smallest of
spaces. Parameter cloning (with Micro SD Card) enables rapid replacement in the
event of faults. The investment is future-proof thanks to adherence to globally
established ISO/IEC15693 standards.
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