基于微机的CO2再呼吸研究数据采集与分析系统。

Biotelemetry and patient monitoring Pub Date : 1978-01-01
M Goegelman, B G Min, D R Donchin, W Welkowitz, T B Santiago, N H Edelman
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引用次数: 0

摘要

本文开发了一种基于微机的实时数据采集和分析系统,用于自动测量再呼吸法对CO2的通气反应。以前的系统在线获取数据,然后离线分析和显示结果。该系统在线完成所有处理,并实时显示实验结果。实验完成后1.5秒即可显示5分钟的数据采集结果。对每个实验结果的即时解释使得在短时间内对同一患者进行一系列相关研究成为可能。微型计算机是数字设备公司的LSI-11,一种低成本的16位机器,基本指令集为PDP-11/40。该系统有16千字节的内存,一个用于数据显示的CRT和一个用于程序加载的纸带阅读器。由于实时处理的时间限制和小型系统的内存限制,软件完全用汇编语言编写。该软件包括数字和字符输入、直线和图形输出、线性曲线拟合、开始上升检测和浮点计算的例程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A microcomputer-based data acquisition and analysis system for CO2 rebreathing studies.

A real-time microcomputer-based data acquisition and analysis system has been developed to automate the measurement of the ventilatory response to CO2 by the rebreathing method. Previous systems acquire the data on-line and then analyze and display the results off-line. The system described here performs all processing on-line and displays experimental results in real-time. The results of 5 min of data acquisition are available for display only 1.5 sec after completion of the experiment. Immediate interpretation of the results of each experiment enable a series of related studies to be performed on the same patient in a short time period. The microcomputer is Digital Equipment Corporation's LSI-11, a low cost 16 bit machine with the basic instruction set of a PDP-11/40. The system has 16 kbytes of memory, a CRT for data display, and a paper tape reader for program loading. Due to the time constraints of real-time processing and the memory constraints of a small system, the software is written entirely in assembler language. The software includes routines for numeric and character input, line and graphical output, linear curve fitting, start of rise detection and floating point computations.

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