Wavecom GR64 UART Sleep Protocols Specifiche Pagina 33

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Chapter 5
RFID Reader Design
The following subsections give a brief overview of RFID systems, their strengths
and weaknesses and suitability for this project. Thereafter, the design of an
independent RFID reader is discussed. Recall that two such units and a co-
ordinator are required for the penguin detection and identification subsystem.
The design of the co-ordinator is discussed in Chapter 6.
5.1 Introduction
Radio Frequency Identification (RFID) is a technology which allows objects
to be marked (or tagged) with small electronic identifiers which can be
detected wirelessly using radio-frequency waves. These tags (or transponders)
carry information in the form of an identification number and possibly user-
defined data as well. Readers (or interrogators) consist of antennas and
receiver circuitry which can retrieve the data from the tags for processing.
5.1.1 Operational Components
An RFID installation typically comprises:
1. RFID transponders
Antenna
Controller IC
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