DESIGN AND IMPLEMENTATION OF EXTERNAL POWERING SOURCE FOR AN ACTIVE RFID TAG

The work is about developing an external powering source of an active RFID tag. The objective of the project is to design and implement the external power source to the active RFID tag that will be embedded with heartbeat, temperature and blood pressure sensors individually. This tag will be attached to the patient so that it can send the information of each sensor to the reader that is connected to the computer. In order to extend the lifetime of the tag, author decided to use a rechargeable Lithium battery to replace the conventional method which was using a normal battery that can only stand for a few hours. This method was done by designing a prototype that consists of a circuit using voltage comparator and voltage regulator. A few types of batteries were selected and their performance was observed. The observation is based on the application, cost and flexibility. The developed prototype was tested and verified to ensure its smoothness operation and compatible with its application. Lastly, the result of the project will be analysed based on the efficiency and lifetime of the tag and to be compared with the present technology used on RFID tag.