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。 This paper introduces some commonly used level gauges of LNG-fueled vehicles, analyzes and summarizes the basic composition, basic working principle and development trends of the level gauges. According to the above factors, the advantages and disadvantages of the gauge are analyzed. Bit meter selection and design for reference. At the same time, it also gives other factors that affect the measurement accuracy of liquid level outside the liquid level gauge, which provides reference for the research direction of LNG fuel tank liquid level detection technology.