Peterson J T, Pohorecky L A
Comput Methods Programs Biomed. 1987 Jun;24(3):169-77. doi: 10.1016/0169-2607(87)90029-0.
Two computer systems developed in our laboratory to monitor the heart rate of freely moving rats are described below. The first system uses the Commodore CBM microcomputer and monitors a single rat. The second system uses the IBM CS9000, monitors up to four rats simultaneously, and provides real-time graphics. Both systems rely on a Schmitt-trigger circuit which digitizes the electrical signal generation by the heart during every cardiac cycle. Both systems also employ the same algorithm to handle the appreciable levels of noise generated by subject movement. The algorithm developed for filtering this noise and its effectiveness are presented. This paper illustrates a software-intensive approach to handling signal timing, and the advantages provided by 16/32-bit versus an 8-bit microcomputer.
以下介绍了我们实验室开发的两种用于监测自由活动大鼠心率的计算机系统。第一种系统使用Commodore CBM微型计算机，监测单只大鼠。第二种系统使用IBM CS9000，可同时监测多达四只大鼠，并提供实时图形。两种系统都依赖施密特触发电路，该电路在每个心动周期将心脏产生的电信号数字化。两种系统还采用相同的算法来处理由动物活动产生的大量噪声。本文介绍了为过滤该噪声而开发的算法及其有效性。本文阐述了一种处理信号定时的软件密集型方法，以及16/32位微型计算机相对于8位微型计算机所具有的优势。
