数据采集处理系统是一个把模拟电信号转换成数字信号,经过计算机加工处理,再把处理后的数字信号转换成模拟信号的闭环系统。在科研、生产和人们的日常生活中,模拟量的测量或控制是经常的。为了对速度、流量、压力、温度、湿度……等物理量进行测量和控制,都是通过传感器把上述物理量转换成一个能模拟物理量的电信号,即模拟信号。这种信号经过模拟/数字变换器(ADC)变换成计算机能识别的数字量,送进计算机,这就是数据采集。采集得来的数字量在计算机中根据需要通过不同的加工处理后,可存于盘中,显示在屏幕上,或由打印机打印和在绘图仪上绘 Data acquisition and processing system is a closed-loop system that converts an analog electrical signal into a digital signal, a computerized process, and then a processed digital signal into an analog signal. In scientific research, production and people’s daily life, analog measurement or control is often. In order to measure and control physical quantities such as speed, flow, pressure, temperature, humidity ..., the above physical quantity is converted into an electrical signal which can simulate a physical quantity by the sensor, that is, an analog signal. This signal through the analog / digital converter (ADC) into a computer-readable digital, sent to the computer, this is the data acquisition. The collected digital quantity can be stored in the disk, displayed on the screen, or printed by a printer and painted on the plotter after being processed by different computers in the computer as required