A generic multielement microsystem for portable wireless applications
A generic multielement microsystem for portable wireless applications
复制标题
用于便携式无线应用的通用多元件微系统
作者：
A. Mason;N. Yazdi;A. Chavan;K. Najafi;K. Wise
描述了一种开放式架构的微系统，它可配备多种传感器和执行器。该微系统专为低功耗无线应用而设计，在这些应用中，小尺寸和高传感器精度至关重要。它由一个模块内微控制器组成，该微控制器通过模块内传感器总线连接到多个前端传感器。一个外部接口允许内部处理的数据通过硬连线输入/输出端口或射频发射器输出。当前的微系统被配置用于环境监测，并测量温度、气压、相对湿度以及加速度/振动。它的体积小于10立方厘米，在6伏电压下平均功耗为530微瓦，数据传输距离可达50米。讨论了诸如有源功率管理、模块内传感器总线、通用总线接口电路以及基于二元多项式的模块内传感器补偿等系统特性。
An open-architecture microsystem that can be populated with a variety of sensors and actuators is described. The microsystem is designed for low-power wireless applications where small size and high sensor accuracy are important. It consists of an in-module microcontroller connected to multiple front-end transducers through an intramodule sensor bus. An external interface allows internally processed data to be output through either a hard-wired input/output port or a radio-frequency transmitter. The present microsystem is configured for environmental monitoring and measured temperature, barometric pressure, relative humidity, and acceleration/vibration. It occupies less than 10 cc, consumes an average of 530 /spl mu/W from 6 V, and transmits data up to 50 m. System features such as active power management, the intramodule sensor bus, generic bus interface circuitry, and in-module sensor compensation based on bivariate polynomials are discussed.