中文摘要：

介绍了一些目前以LNG为燃料的交通工具常用的液位计，对其基本组成、基本工作原理以及发展动态进行了较为细致的分析和综述，根据以上因素对其优缺点进行了分析，为液位计的选择以及设计提供参考。同时也给出了除去液位计外影响液位测量精度的其他因素，为LNG燃料罐液位检测技术的研究方向提供参考。

英文摘要：

Some kinds of level gauges used in the storage tank of LNG vehicle were introduced in this paper. Their basic composition, principle and trends of development were analyzed and discussed in detail. According to the above factors , their advantages and disadvantages were analyzed, which would provide the reference for level gauges in selecting and designing. Be- sides the kind of level gauge, other influence factors were discussed in this paper as well, would provide the reference for the fol- lowing study direction of LNG storage tank＇ s level measurement technique.