| Publisher | University of Adelaide | ||
|---|---|---|---|
| Format | 141.1KB PDF | Date added | 24 Aug 2004 |
| Topics | Mobile - Wireless Communications, RFID | ||
| Downloads | 10 | ||
The drill strings used in oil drilling have a limited life in that a section may be used 400 times or until the diameter reduces 20 mm from wear against the surrounding rock. RFID labelling the pieces of the drill string allows the recording of usage and location data at a particular depth of the drill head, aiding in the planning of a rotation scheme, so that any one particular section is not constantly at a position of high stress. Such RFID tags embedded in metal may be used for other metal asset tracking applications. In this paper it is shown that suitable antennas can be made from capacitor structures sensitive to electric fields perpendicular to the metal surface.
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