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本文给出了只用一个带有IEEE-488接口的数字多用表,进行多通道数据采集的实现方法,其关键技术就是我们开发的通道选择卡及其开关电路。用数字多用表测量温度和电压等参量时,可以将所测得的参量通过上述接口直接读入计算机,但每次只能测量一个对象。在测量多个对象时,采用分时共享的策略,利用通道选择卡(16通道)将多个对象共同连接到一个数
In this paper, a method of multi-channel data acquisition using only a digital multimeter with an IEEE-488 interface is given. The key technology is the channel selection card and its switch circuit. When using DMM to measure parameters such as temperature and voltage, you can read the measured parameters directly into the computer through the above interface, but you can only measure one object at a time. In the measurement of multiple objects, the use of time sharing strategy, the use of channel selection card (16-channel) to connect multiple objects together to a number