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一、系统概述近年来,微机控制的数据采集系统发展很快,应用越来越广。当前,数据采集系统在速度、精度、抗干扰能力、接口能力方面有了很大的提高,软件功能也极为丰富。引入通用接口后,可灵活地加挂仪器设备,构成复杂的自动测试系统。但是,就我国目前工业生产情况看,大量出现的还是一些常规的过程参数,如温度、压力、流量、位移等物理量的检测和控制,这些参数,一般变化较慢,传感技术也较成熟。本系统就是基于这样的前提而设计的。
First, the system overview In recent years, the computer-controlled data acquisition system developed rapidly, more widely used. At present, the data acquisition system has been greatly improved in speed, accuracy, anti-interference ability and interface capability, and the software functions are extremely rich. The introduction of universal interface, the flexibility to hang equipment, constitute a complex automatic test system. However, judging from the current situation of industrial production in our country, a large number of conventional process parameters such as temperature, pressure, flow, displacement and other physical quantities are detected and controlled. These parameters usually change slowly and sensor technologies are relatively mature. The system is based on this premise and design.