基于太赫兹电磁波的火灾主动成像系统

Active Fire Imaging System Based on Terahertz Electromagnetic Wave

基于太赫兹(THz)电磁波的火灾主动成像系统,由非相干阵列式太赫兹照明器和太赫兹相机组成。在模拟火灾环境下,将太赫兹火灾成像系统与传统的近红外有源成像系统进行了比较。结果表明:无论有无烟雾,太赫兹火灾成像系统均能获得目标物体的清晰图像;而传统近红外有源成像系统目标物体图像的对比度随着烟雾密度的增加而逐渐降低。

An active fire imaging system based on terahertz (THz) electromagnetic wave was introduced. The system was consisted of a non-coherent array terahertz illuminator and a terahertz camera. The terahertz system was compared with the traditional near-infrared active imaging system in simulated fire environment. The results showed that the terahertz imaging system was able to obtain a clear image of the target object with or without smoke,while for the traditional system the contrast of target image decreased gradually with the increase of smoke density.