一种基于单片机的数据采集及控制系统的设计

Design of data-collected and controlled system based on microcontroller

本文介绍了以单片机Atmega128为核心构成串行数据采集及控制系统,该系统通过串行口与具备串行口的医疗设备通信,控制系统可发指令给医疗设备实现系统控制,控制系统同时通过A/D转换实现数据采集。系统利用单片机丰富的软硬件资源,可以实现采样、通讯、计算、脉冲计数等多种功能。实验表明,该方案系统电路结构简单、功耗低,特别适合基于单片机的便携式医学仪器开发。目前该系统已成功地应用于便携式静脉麻醉控制仪的开发。

This paper introduces a system of serial data collection and controlled taking Atmega128as the core.This system can exchange information with medical equipments through serial communication and collect data through A/D.And this controlled system can deliver the instruction to control the medical equipments.The system makes use of the software and hardware resources of Atmega128,it can carry out the sample,communication,calculation.The experiˉment shows that the project's structure is simple,suitable for designing portable medical equipment especially.This system has already been successfully used in target controlled infusion according to pharmacodynamic parameters of inˉtravenous anesthetics.It can control the depth of anesthesia with adjusting the level of plasma concentrations.The system has the advantages of high precision,extending power and convenience to use.