A signal processing method for flame detection system

XIA Ming; WEI Dong-xing; JIANG Tao

doi:10.13873/J.1000-9787(2015)12-0032-04

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A signal processing method for flame detection system

更新时间：2025-09-11

- A signal processing method for flame detection system
- Vol. 34, Issue 12, Pages: 32-35(2015)
- 作者机构：
  
  1. 大连理工大学信息与通信工程学院
  2. 大连欧瑞自动化有限公司
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2015)12-0032-04
  CLC： TN911.7
- Published：2015
- 稿件说明：
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[1]夏明,魏东兴,姜涛.一种火焰检测系统的信号处理方法[J].传感器与微系统,2015,34(12):32-35.

XIA Ming, WEI Dong-xing, JIANG Tao. A signal processing method for flame detection system[J]. 2015, 34(12): 32-35.
[1]夏明,魏东兴,姜涛.一种火焰检测系统的信号处理方法[J].传感器与微系统,2015,34(12):32-35. DOI： 10.13873/J.1000-9787(2015)12-0032-04.

XIA Ming, WEI Dong-xing, JIANG Tao. A signal processing method for flame detection system[J]. 2015, 34(12): 32-35. DOI： 10.13873/J.1000-9787(2015)12-0032-04.

摘要

设计了一种用于热能设备的火焰检测系统处理信号的方法。系统以AVR单片机为核心芯片

信号放大处理电路采用多级放大器与多路ADC通道相结合

实现自适应增益调整

以提高输入动态范围。火焰信号强度用输入信号的统计平均值表示

火焰信号的频率用快速傅里叶变换（FFT）进行分析计算。在FFT运算中

利用定点运算和查表法简化计算过程

降低资源消耗

提高运算速度

在300 ms时间内完成了512个采样点的定点FFT运算

频率分辨率为1 Hz

保证火焰信号检测的实时性、精度和可靠性。

Abstract

A method for signal processing of flame detection system for thermal energy equipment is presented. An AVR microcontroller unit（ MCU） used as core chip

the multistage amplifiers combined with multiple ADC channels in signal amplification circuits are adopted to implement adaptive gain modulation and expand dynamic range of input. Statistical average of the input signals represents the flame signal intensity

and the flame signal frequency is analyzed and calculated by fast Fourier transform（ FFT）. During FFT calculation process

use fixpoint calculation and table lood-up method to simplify the calculation procedure

reduce resource consumption and improve arithmetic speed

fixed-point FFT of 512 samples is achieved within 300 ms with 1Hz frequency resolution

guarantee real-time

precision and reliability of flame signal detection.

关键词

Keywords

references

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DSP锅炉火焰检测系统设计 [J]. 耿艳彪,姜万生,徐娅萍,王涛. 机械与电子 . 2010(01)

锅炉的燃烧分析及火焰检测系统 [J]. 陈广华,张令. 北京交通大学学报 . 2005(04)

嵌入式系统中FFT算法研究 [J]. 肖宛昂. 单片机与嵌入式系统应用 . 2003(04)

智能火焰检测器的研究 [J]. 任丽军,纪铁军,童子权. 哈尔滨理工大学学报 . 2002(04)

紫外型火焰检测器的研制 [J]. 黄晓玲. 仪器仪表学报 . 1999(05)

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