Self-contained track and trace using GPRS

This paper describes the design and implementation of the hardware and software of a self-contained track and trace unit capable of monitoring its own location. The unit also has the ability to report its location to a central server. The firmware for the tracking unit was implemented in the C programming language and runs natively on an Atmel AVR architecture. A PHP application was developed to enable central logging of locations, as well as exporting this data to Google Maps and Google Earth. The system was successfully implemented and a number of field tests were performed to validate specifications. The system is able to accurately track a vehicle or asset for an extended period of time. A unit´s position could be visualized using either Google Earth or Google Maps. SMS control and monitoring was possible for the majority of the units operating time.