Low Power Remote Monitoring System With Pyroelectric Infrared Sensor And False Detect Discriminator

摘要

A low power, remote monitoring system includes a hub with a real time clock (RTC) generating an RTC signal after a dwell time; a first power gating circuit generating a first power-on signal; and a first baseband and communication block activating on receiving the first power-on signal, sending a cry-out poll to a sensor for event detection data, and specifying the dwell time at the RTC. The sensor system includes a sensing circuit generating a sensing signal when an event is detected; a discriminator logic for generating a valid motion signal if the event is validated; a second power gating circuit generating a power-on signal; and a second baseband and communication block activating when the power-on signal is received, generating an event detection signal, and transmitting the event detection signal when the cry-out poll is received. First and second baseband and communication blocks are powered down when not in use.