基于LabVIEW的可变温循环PCT自动测试装置  

Development of Automatic Cycle PCT Apparatus of Variable Temperature Based on LabVIEW

作　　者：朱洪星 程宏辉[1] 周德强 秦俊南 ZHU Hongxing;CHENG Honghui;ZHOU Deqiang;QIN Junnan(College of Mechanical Engineering,Yangzhou University,Yangzhou 225127,Jiangsu,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225127

出　　处：《实验室研究与探索》2023年第2期78-82,114,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(11475145)。

摘　　要：针对储氢材料压力-组成等温线(PCT)测试的自动化程度不高和测试效率低等问题,提出了一种基于LabVIEW的储氢材料可变温循环PCT自动测试装置。介绍了该装置核心硬件的选型、设备的设计原理和PCT变温循环自动测试的实现方法;利用计算机与AI-518P温控器的串口通信实现了PCT测试的自动变温控制;提出了一种用于PCT测试的自动充放氢方法,实现了PCT测试的完全自动化及提高了测试效率。通过对多种储氢材料进行自动PCT测试,验证了自动充放氢方法的有效性;通过对LaNi_(4.25)Al_(0.75)合金样品的变温循环PCT自动测试,验证了该装置的鲁棒性和高效性。Aimed at the problems of low automation level and test efficiency of pressure-composition-temperature(PCT)isotherm test,an automatic cycle PCT apparatus of variable temperature based on LabVIEW is designed.The selection of core hardware,the design principle of the equipment and the implementation of the automatic cycle PCT test of variable temperature are described in more detail.The temperature control of the PCT test is achieved by using the serial communication between computer and temperature controller(AI-518P).In order to realize the complete automation and efficiency improvement of PCT test,an automatic PCT dosing method is developed.The effectiveness of the automatic dosing method is verified by the automatic PCT tests on various hydrogen storage materials.The robustness and efficiency of the unit are validated by the automatic cycle PCT test of variable temperature of LaNi_(4.25)Al_(0.75)alloy.

关 键 词：材料表征 串口通信 自动化 容量法 

分 类 号：TQ015.9[化学工程] TP2[自动化与计算机技术—检测技术与自动化装置] O6-39[自动化与计算机技术—控制科学与工程]