广东外语外贸大学简约动态大学生毕业论文可编辑....pptOverview of: System Architecture Directions worked Sensors John Kerwin CSE 291 works Paper by: Jason Hill, Robert Szewczyk, Alec Woo, Seth Hollar, David Culler, Kris Pister / Motivation works are puting environments in the post-PC era that are different from traditional desktop and server environments. There are several trends working together to enable worked sensor: Moore’s Law System on a chip Micro-electromechanical sensors (MEMS) Integrated low munication Motivation (cont) Today, sensors exist on the scale of a square inch in size, and a fraction of a watt in power. In the future, it may be possible to reduce sensors to the size of a cubic millimeter, or smaller. The key missing technology for these devices is system software to manage and operate them efficiently. Project Objectives Create a prototype of a current generation sensor constructed from off the ponents. Identify key requirements that an operating system for such a sensor must satisfy. Build an operating system that meets these requirements. Evaluate the operating system’s performance while running a real application. Today’s Hardware Assembled from off-the-ponents 4Mhz, 8bit MCU (ATMEL) 512 bytes RAM, 8KB ROM 900Mhz Radio (RF Monolithics) 10-100 ft. range Temperature Sensor & Light Sensor LED outputs Serial Port ” x ” Slide courtesy Jason Hill et al Hardwar
