Case Study: Ethernet Enabled RFID Tag
by Tim Mintzer
The client had a need to provide “network
interoperability” into his RFID Tag Reader. Market conditions dictated
a very fast pace. Specific requirements were:
The circuitry was broken down into three parts. The first section was
the Ethernet interface. A search was performed and a commercially
available Ethernet to RS-232 interface product was chosen.
- Design enclosure, circuitry, and firmware
to provide network operability and future expansion to other network
- Provide upgrade functionality in the
design for future hardware and software enhancements.
- Low noise design to not interfere with
- Provide prototypes as soon as possible.
- Work with different engineers in various
The second section was the Micro Controller
for the interface. A Microchip Pic Microcontroller was chosen to
provide that interface.
The third section dealt with the interfaces
of the actual RFID radio and outside world.
Within three short weeks, the electronics
design was completed and a Printed Circuit board was generated. Special
care was taken during the PCB design to keep the noise low.
After 5 weeks, working prototypes had been
built and firmware was undergoing testing and debugging.
Working with other engineers in various
locations, this project required a very high level of communication
between all locations. Working closely with the project manager, our
firm was successful in meeting all of the objectives.
© 2005 - EDC Inc. - All Rights