基于红外技术的烟尘密度计量系统

Fire Smoke Density Measuring System Based on Infrared Technology

对火灾现场产生的烟尘进行了分析,并利用气溶胶发生器对火灾现场产生的烟尘进行了模拟,列出了感烟探测器检验装置中烟尘密度计量系统的各项标准。提出了一种基于红外线技术的烟尘密度计量系统。该计量系统的信息采集单元由红外发射管和接收管组成。该单元产生的烟雾信患经过滤波和放大等处理后,送给模数转换单元进行数字化处理,再由单片机信息处理系统进行实时采样判别。获得的将数据由显示器显示出来或通过联网总线传输给上位机。该系统设计相对简单,易于安装调试,测量精度较高。

The smoke dust generated on the scene of fire is analyzed and simulated by using an aerosol generator. The standards for the smoke density measuring systems used in smoke detectors are listed. A fire smoke density measuring system based on infrared technology is proposed. The information acquisition unit of the measuring system consists of an infrared transmitting tube and an infrared receive tube. First, the smoke information acquired by the acquisition unit is filtered, amplified and sent to an analog-digital converter for digital processing. Then, the digital signals are sampled and discriminated by a MCU information processing system in real time. Finally, the obtained data are displayed or transmitted to the host computer through a network bus. The system has the features such as simple structure, easy mounting and higher accuracy.