紫外光电型一体化火焰检测器设计

Design of an ultraviolet photoelectric integrated flame detector

针对传统火焰检测器信号易衰减、易受干扰、传输距离近等缺陷,提出将传感器和信号处理器二合一的一体化设计方法,来提高复杂环境下整机的可靠性。用检测火焰信号的紫外光脉冲数和强度值来判断火焰的有无,给出了紫外高压驱动、火焰状态信号传输、火焰信号调理等具体实现电路和软件的设计方法。煤气燃烧炉现场实验测试结果表明,本检测器具有较高的实用价值。

In this study,an integrated design method that combines the sensor and processor is proposed to overcome the disadvantages of the traditional flame detector,including easy attenuation and interference as well as short transmission distance.The proposed design method improves the reliability of the entire machine in a complex environment.Based on the analysis of the ultraviolet photoelectric flame detection working principle,the project judges the existence of a flame by detecting the ultraviolet pulse number and intensity of the flame signal.Further,methods for circuit and software design,such as high-voltage driving,flame-state signal transmission,and flame signal processing,are proposed in this study.The detector is observed to be of excellent practical value in the field of gas combustion furnace based on the field test results obtained using a gas combustion furnace.