The paper mainly introduces the structure of Dewar liquid nitrogen bottles auto filling system, the work theory and the features of related hardware, and briefly describes functions of the software.

• 摘要文章介绍用于高纯锗探测器的杜瓦液氮瓶自动灌装系统的组成结构、工作原理以及相关硬件的选取及特点，并简要说明软件实现的功能。