设计并实现一种基于嵌入式系统的火灾现场易燃液体残留物实时检测系统,它在嵌入式技术优势的基础上,结合气相色谱柱和光离子化传感器,达到了便携式、实时、精确的效果。实验证明,该系统在多种干扰物与汽油混合燃烧的情况下依然能够稳定地检测出汽油的特征峰,仪器具有良好的线性、灵敏度、检测限和稳定性。 Design and implementation of a real-time detection system for flammable liquid residues on the fire site based on embedded system, based on the advantages of embedded technology, combined with GC columns and photoionization sensors to achieve a portable, real-time, accurate results. Experiments show that the system can still detect the characteristic peaks of gasoline stably under the conditions of mixed combustion of many kinds of interferent and gasoline, and the instrument has good linearity, sensitivity, detection limit and stability.