一、引言数据采集是获取信息的基本手段,是指将温度、压力、流量、位移等模拟量采集、转换成数字信号,并送入计算机进行存储、处理和输出处理结果的过程。实现数据采集的系统称为数据采集系统。数据采集的任务就是采集传感器输出的模拟信号并转换成计算机能够识别和处理的数字信号,然后送入计算机和相应的信 I. INTRODUCTION Data acquisition is the basic means of obtaining information. It refers to the process of collecting, converting analog signals such as temperature, pressure, flow and displacement into digital signals and sending them to the computer to store, process and output the results. The system that realizes the data acquisition is called the data acquisition system. The task of data acquisition is to collect the analog signal output by the sensor and convert it into a digital signal that the computer can recognize and process and then send it to the computer and the corresponding letter