System Architecture Directions for Networked Sensors
Technological progress in integrated, low-power, CMOS com- munication devices and sensors makes a rich design space of networked sensors viable. They can be deeply embedded in the physical world and spread throughout our environ- ment like smart dust. The missing elements are an overall system architecture and a methodology for systematic ad- vance. To this end, we identify key requirements, develop a small device that is representative of the class, design a tiny event-driven operating system, and show that it provides support for efficient modularity and concurrency-intensive operation. Our operating system fits in 178 bytes of mem- ory, propagates events in the time it takes to copy 1.25 bytes of memory, context switches in the time it takes to copy 6 bytes of memory and supports two level scheduling. The analysis lays a groundwork for future architectural advances. [via]
http://pdos.csail.mit.edu/6.097/readings/tiny...
sensors
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