Disclosed is an active or dynamic RFID tag that actively provides current
status information regarding a particular item, as well as mechanisms for
recognizing dynamic RFID information read from such RFID tag. Static
identifying information regarding the particular item is provided either
by the same active/dynamic RFID tag or by a different passive RFID tag.
While the RFID tag may passively or actively provide general
identification, the RFID actively provides status information that
corresponds to changes in the corresponding item's status. In a first
implementation, active RFID tags are positioned next to one or more
components within a system so that each active RFID tag is powered and
transmitting its RFID information when its corresponding component is
operational. In contrast, each active RFID tag is positioned so that it
is not powered and not transmitting its RFID information when its
component is failing. Accordingly, an RFID reader can then know when a
system has a failing component when a one of the component's
corresponding active RFID tag is not transmitting its RFID information.
In this first implementation, the active RFID either transmits or fails
to transmit based on its component's status state. In a second
implementation, a dynamic RFID is associated with a specific component,
set of components, or system, and the dynamic RFID tag dynamically
provides an RFID reader with RFID information that changes with its
associated item's changing status state. The status state may correspond
to any suitable parameter of the item or product that can change over
time. Thus, the dynamic RFID provides different transmission frequencies
based on different status states of its component or system.