论文部分内容阅读
近些年来,由于测量通道数增加,越来越需要带有程序库的现代数据采集系统。本文所介绍的系统是具有128个输入测量通道,数据带宽可达20kHz,数据精度为10位分辨率,最大输入数据率每秒2.56×10~6采样次,总采样时间为15ms到375ms范围。一系统技术条件为确定数据采集系统的技术条件,首先要考虑它所服务的各种试验装置,如气动研究部门的高超声速冲击风洞,运输研究部门的撞击雪橇、以及记录在模拟磁带上的汽车碰撞数据
In recent years, due to the increasing number of measurement channels, there is a growing need for modern data acquisition systems with libraries. The system introduced in this paper has 128 input measurement channels, the data bandwidth is up to 20kHz, the data accuracy is 10 bits resolution, the maximum input data rate is 2.56 × 10 ~ 6 sampling times, and the total sampling time is from 15ms to 375ms. System conditions To determine the technical conditions of the data acquisition system, it is necessary to consider the various experimental devices it serves, such as the hypersonic impact wind tunnel in the aerodynamic research department, the impact sled in the transportation research department, and the recording on analogue tape Car crash data