大空间中热隐患的可视化监测

在无人值守的情形下,实现对大型建筑空间内发热物体、火灾等热隐患的智能监测是非常必要的,笔者基于已有的研究成果,讨论了大空间热隐患监测中,高温目标的可视化甄别和温度场的可视化测量原理。利用CCD(电荷耦合器件)的近红外响应特性(800~1200nm)、短波段内单调发射率函数、非相关滤色片构造和归一化数据处理模式等关键技术,使得常见的CCD图像监控设备实现了高温热隐患的非接触、可视化智能监测(即包括高温目标的可视化甄别以及温度场的可视化测量),改进的设备有望推广应用。

Visualized Monitoring of Thermal Abnormity in Large Space

It's necessary to monitor the thermal abnormity in an unmanned large space of building. Based on known research achievements, the principles of visualized recognition and measurement of thermal object and temperature field in large space were discussed. Using the key techniques of near infrared response characteristics (800～1200 nm) of CCD (Charge Coupled Device), the monotonic emissivity model in short waveband, the non-correlative filters and the normalization data process, the generally used CCD video monitor system could be made into untouched visualized intelligent monitoring system for thermal abnormity.