面向原位资源利用的模拟月壤料位测量实验研究  

Experimental Study on Level Measurement of Lunar Regolith Simulant for In-Situ Resource Utilization

作　　者：柳冠青[1] 潘威丞 朱泽鹏 李水清[1] LIU Guanqing;PAN Weicheng;ZHU Zepeng;LI Shuiqing(Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学能源与动力工程系,北京100084

出　　处：《空间科学与试验学报》2025年第1期104-111,共8页Journal of Space Science and Experiment

基　　金：国家自然科学基金项目(52130606)。

摘　　要：面向太空原位资源利用对粉体料位测量的技术需求,提出了一种基于叉指电极电容板的料位测量方法,并在真空环境下基于模拟月壤对其工作特性进行了实验研究。研究结果表明,叉指电极电容板的电容值与料位呈线性关系,其敏感系数可达10^(-1)~10^(0) pF/mm量级,具有较高的灵敏度。敏感系数受电极结构参数和铺粉厚度的影响,其中电极间距和绝缘层厚度对敏感系数的影响最为显著。为获得更高的敏感系数,应采用较小的电极间距和绝缘层厚度。相同的电极间距下,存在较优的电极宽度以使敏感系数最大。不仅证实了叉指电容在真空环境下测量模拟月壤料位的可行性,未来还可根据其工作原理拓展应用于粉体架桥检测和厚度测量等场景。In response to the technical requirements for powder level measurement for in-situ space resource utilization,this study proposes a level measurement method based on interdigital capacitors.The measurement characteristics were experimentally investigated with lunar regolith simulant in a vacuum environment.The results indicate that the capacitance of the interdigital capacitor varies linearly with the powder level,exhibiting a sensitivity parameter ranging from 10^(-1) to 10^(0) pF/mm.This sensitivity is influenced by electrode structure parameters and powder layer thickness,with the electrode spacing and insulating layer thickness having the most significant impact.To achieve a higher sensitivity,smaller electrode spacing and insulating layer thickness should be used.Additionally,for a given electrode spacing,there exists an optimal electrode width that maximizes the sensitivity parameter.This study demonstrates that interdigital capacitors are suitable for measuring the powder of level of lunar regolith simulant in a vacuum environment.Furthermore,their underlying working principle suggests potential applications in powder arching detection and powder layer thickness measurement in future space missions.

关 键 词：叉指电极电容 料位 敏感系数 原位资源利用 模拟月壤 

分 类 号：V11[航空宇航科学与技术—人机与环境工程]