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本文研究的锅炉火焰探测器以典型的DSP芯片TMS320LF2407A为硬件平台的核心,由InGaAs PIN G5832-01 series紫外光电传感器获取火焰的原始信号,MAX263电压编程精确滤波器进行滤波,实现光电检测,信号转换、信号调理、数据采集。采用汇编语言实现系统控制算法,频谱分析和与上位机的通讯;基于闪烁频率法检测原理提取火焰信息,利用快速傅立叶变换(FFT)分析火焰频谱,判断火焰是否重叠。实验结果表明所设计的硬、软件平台具有较好的信号获取与处理功能,有效地解决火焰的“偷看”与“漏看”。
The boiler flame detector studied in this paper takes the typical DSP chip TMS320LF2407A as the core of the hardware platform. The original signal of the flame is obtained from the InGaAs PIN G5832-01 series UV photosensor. The MAX263 voltage-programmed precision filter is used to filter the light and detect the signal. , Signal conditioning, data acquisition. The system control algorithm, spectrum analysis and communication with the host computer are realized by using assembly language. Flame information is extracted based on the detection principle of flicker frequency method, and the flame spectrum is analyzed by Fast Fourier Transform (FFT) to judge whether the flames overlap. The experimental results show that the hardware and software platform designed has better signal acquisition and processing functions and effectively solves the flame “peek ” and “leakage see ”.