A modular power-aware microsensor with 1000x dynamic power range
Brian Schott, Michael Bajura, Joe Czarnaski, Jaroslav Flidr, Tam Tho, Li Wang · 2005
We introduce a power-aware microsensor architecture supporting a wide operational power range (from 10W). The platform consists of a family of modules that follow a common set of design principles. Each module includes a local power microcontroller, power switches, and isolation switches to enable independent power-down control of modules and module subsystems. Processing resources are scaled appropriately on each module for their role in the collective system. Hard realtime functions are migrated to the sensor and radio modules for improved power efficiency. The optional Linux-based processor module supports high duty cycling and advanced sleep modes. Our reference hardware implementation is described in detail in this paper. Seven kinds of modules have been developed. We utilize an acoustic vehicle tracking application to demonstrate how the architecture operates and report on results from field tests on tracked and wheeled vehicles. 1.