Sick RFGS radiofrequency gate system

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The great advantage and, simultaneously, the challenge of RFID technology in logistics is that large numbers of containers can be read at the same time and nearby tags must not be allowed to interfere.

The RFGS (Radio Frequency Gate System) allows such multiple reading and is optimised for stacks on pallets - at maximum reading rates and with other such systems nearby. In the case of the RFMS (Radio Frequency Modular System) RFID tunnel, tag reading takes place on the product level within the multiple packaging system. Sick claims to have solved the high complexity of these application requirements through integration of these two systems.

The RFGS Pro track-and-trace system consists of read/write units for identification via RFID, a central controller with integrated allocation algorithm and a 2D laser scanner for detecting objects, speed and direction. This enables unambiguous decentralised allocation of the RFID tags at the gate. False positives are suppressed without costly licensed software.

The small RFU620 UHF RFID read/write unit offers the possibility of adjusting the transmission power, and its adaptive power control function autonomously increases transmission power until a transponder can be read, preventing the simultaneous detection of several transponders. The interface and fieldbus standards (including RS232/422, Ethernet TCP/IP, EtherNet/IP, CANopen, PROFIBUS DP and PROFINET IO) are supplemented with the integration option of Power over Ethernet (PoE).