The HF RFID reader (SkyeRead M1
Mini [22]) is used in conjunction to track all medicine bottles within range of the reader.
FIGURE 17.4
Medicine monitoring system.
318 RFID Handbook: Applications, Technology, Security, and Privacy
The Medicine Mote communicates with the HF RFID reader and with the scale to monitor
HF tags and the total medicine weight. By performing reads of all tags at a regular interval,
the system is able to determine when and which bottle is removed or replaced by the patient.
(The short range of the HF reader is actually desirable for this aspect of the application.)
The weight scale monitors the amount of medicine on the scale. Combining changes in
weight and HF tag event, which medicine bottle and the amount of medicine taken can be
determined when the patient takes their pills. The Medicine Mote software is described in
detail in Section 17.4.2.2.
17.4.1.2 Patient Monitoring Subsystem
This subsystem is shown in Figure 17.5. A UHF RFID system including a reader and one or
more tags is used to track the elder patient who needs the medicines. This patient wears a
UHF tag, which may be detected by the associated RFID reader within 3??“6 meters. The
AWID UHF RFID reader [23] is chosen for this subsystem. The Patient Mote communicates
with the UHF Reader to monitor patient arrival at the door of a room or other areas where
the system is installed.
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