超流氦获取实验液位数据采集与测试系统研究

Study on the data acquisition system of superfluid helium obtaining experiment

针对超流氦获取与传输实验设计的数据采集系统由控制柜、工控机、显示器三部分组成。使用板卡PCI-1620对工控机的串口进行扩展,使系统能够同时采集8个RS232信号。其中液位信息是非常重要的物性参数,针对获取与传输实验液氦杜瓦设计定制的超导液位计,能够与整个测控系统一起完成液位信息的采集、转换和记录。

Based on the characteristics and the performance of the superfluid helium obtaining and transferring system, a data acquisition system was set up in order to collect, test, record, and store experimental information. The data acquisition system was composed of control easing, host computer, and indicator. PCI - 1620 was used to extend the series pert of the host computer, therefore the host computer could collect eight signals of RS232 at same time. Liquid level is a very important physical parameter which could be collected, transformed and recorded by the super conducted level sensor and data acquisition system.