CSL CS468 16-Port EPC CLASS 1 GEN 2 RFID READER
USER'S MANUAL, VERSION 2.0.1
Copyright © Convergence Systems Limited, All Rights Reserved
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RSSI Filter (C# and Java Demo App)
The RSSI (Received Signal Strength Indicator) value is an indicator of signal strength from an
RFID tag to an RFID reader.
Normally RSSI can be used in
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Estimating the distance between an RFID tag and an RFID reader. The higher the RSSI value,
the closer the RFID tag is to the reader. (The environment is analyzed and taken into
consideration.)
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Identifying the movement direction of an RFID tag. (As the RFID tag moves closer to the RFID
reader, the RSSI value increases. When the RFID tag moves away from the RFID reader, the
signal gets weaker)
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Setting optimal reading and writing conditions. (RSSI value can be used to analyze the tag
reading and writing conditions. The optimal condition is to be able to use as little power as
possible for achieving a strong enough signal to perform the RFID actions)
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Analyzing and optimizing the environment.
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Locating lost tags. (Geiger search: Many retail and supply chain operations require a "locate
tag" application. The RSSI value can be used for guiding the user closer and closer to the
target)
By applying RSSI filters only tags within a certain distance are registered. RFID reading and
writing conditions can be optimized for specific applications.
To obtain the threshold value, user can use Geiger to get the RSSI value range of using a tag
located at a distance from the CSL RFID reader.
