Raspberry Pi based automatic meter reading

In recent years,most developed countries like the United States and other European countries used automated meter reading systems (AMR). These are more accurate measuring device than the conventional electromechanical meter reading system. This paper presents an implementation methodology for a wireless automatic meter reading system (WAMRS) incorporating the widely used GSM network. In many countries GSM and GPRS network is widely known for its vast coverage area, cost effectiveness and also for its competitive ever growing market. Processing flow is as camera capture the image, captured image is pre -processed to get display plate and characters are recognized by processor raspberry pi using contour algorithm, by taking difference between two readings of consecutive months billing is done and send it to the consumer using GSM wireless technology.