Abstract: The new integrated thermal gravimetric analyzer is designed according to the framework of virtul instrument, which greatly improves the extensibility and usability of the instrument. The upper-level computer communicates with low-level SCMs using USB communication mechanism. Embedded database technology is used to manage huge amounts of data centrally and enable the users to query and analyze data through a unified entry point.

Key words: Virtual instrument, Embedded database, Themal analysis, USB communication

摘要： 研制成功的智能化综合热分析仪是一种虚拟仪表，它采用上位机与下位多单片机的分布式控制结构。下位机温控卡和信号采集卡与上位机通过USB接口进行通信。利用虚拟仪器的框架提高了综合热分析仪的扩展性和出色的集成能力。应用嵌入式数据库技术对数据集中进行管理，提高了对试验数据的管理和查询能力。

关键词: 虚拟仪表, 嵌入式数据库, 热分析, USB通信