Abstract

building virtual keyboards; . managing inventory control; . monitoring product quality; . constructing smart office spaces; and . providing interfaces for the disabled. SMART DUST REQUIREMENTS Smart Dust requires both evolutionary and revolutionary advances in miniaturization, integration, and energy management. Designers can use microelectromechanical systems (MEMS) to build small sensors, optical communication components, and power supplies, whereas microelectronics provides increasing functionality in smaller areas, with lower energy consumption. Figure 1 shows the conceptual diagram of a Smart Dust mote. The power system consists of a thick-film battery, a solar cell with a charge-integrating capacitor for periods of darkness, or both. Depending on its objective, the design integrates various sensors, including light, temperature, vibration, magnetic field, acoustic, and wind shear, onto the mote. An integrated circuit provides sensor-signal pr

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