WSN sensor node for protected area monitoring

The article is dedicated to sensor node design focused on minimalization of energy consumption. The mote is proposed for low rate or occasional data transmission so that communication subsystem energy consumption can be minimal. In case of simple applications, the sensor could be energized from two super-capacitors 50F/2.3V during 14 hours. The mote consists of acoustic sensor monitoring specific events and switching microcontroller from stop-status to active-status. All rest mote functions are controlled by microcontroller. Real time clock (RTC) can activate sensor node too. It can be used for time synchronization of communication subsystem as well.