基于LabVIEW的CRPL2数据采集系统设计

The Design of CRPL2 Data Acquisition System Based on LabVIEW

数据采集仪CRONOS PL2-DIO-UNI8(简称CRPL2),可同时测量多种模拟量信号,但其配套的测量软件在关键数据的读数和双通道测量参数的关联显示上不够方便。用LabVIEW的图形化编程语言完成CRPL2数据采集系统的二次开发。以采集并测量蓄电池牵引车输出的牵引力以及电动机回路中的电流为例,设计了牵引力、电流传感器与CRPL2数据采集器的硬件连接,给出LabVIEW软件设计主程序框图和测量显示图形的互动读数方法,实现牵引力和电流的关联显示和关键数据的直观读数,简化了操作程序,提高了测试数据的关联准确率。

CRONOS PL2-DIO-UNI8(referred to as CRPL2)is a data acquisition instrument which can simultaneously measure a variety of analog signals,while its matching measurement software exists inconvenience in reading key data and displaying the correlation of double channel measurement parameters.This paper makes use of LabVIEW graphical programming language to achieve the secondary development of CRPL2 data acquisition system.Through the example of collecting and measuring the traction force of battery towing tractor and the current of motor circuit,a hardware connection between traction force,current sensor and CRPL2 is designed.Meanwhile a block diagram of main program based on LabVIEW software as well as the interactive reading methods of measurement display graph are given.Therefore it realizes not only the correlation display between traction force and current but also the direct reading of key data.It also simplifes operational procedures and improves the correlation accuracy of measured data.