A line in the sand: a wireless sensor network for target detection, classification, and tracking
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Military communications systems and technologies
Radio-Triggered Wake-Up for Wireless Sensor Networks
Real-Time Systems
VigilNet: An integrated sensor network system for energy-efficient surveillance
ACM Transactions on Sensor Networks (TOSN)
A low-power correlation-derivative CMOS VLSI circuit for bearing estimation
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Towards optimal sleep scheduling in sensor networks for rare-event detection
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Sentry-based power management in wireless sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Wake-up receivers for wireless sensor networks: benefits and challenges
IEEE Wireless Communications
Hi-index | 0.00 |
We present a low-power VLSI wake-up detector for a sensor network that uses acoustic signals to localize ground-based vehicles. The detection criterion is the degree of low-frequency periodicity in the acoustic signal, and the periodicity is computed from the “bumpiness” of the autocorrelation of a one-bit version of the signal. We then describe a CMOS ASIC that implements the periodicity estimation algorithm. The ASIC is fully functional and its core consumes 835 nanowatts. It was integrated into an acoustic enclosure and deployed in field tests with synthesized sounds and ground-based vehicles.