公开(公告)号：US20140353473A1

公开(公告)日：2014-12-04

申请号：US13906538

申请日：2013-05-31

Applicant: General Electric Company

Inventor： Lucian Vasile Stoica ,  Emad Andarawis Andarawis ,  Michael Charles Spalding ,  Charles Arthur Slabaugh ,  Frederick Louis Glesius ,  Cheng-Po Chen ,  Alexey Vasily Vert

IPC: G08B17/12

CPC classification number: G08B17/12 ,  F23N5/24 ,  F23N2029/00

Abstract: A system for determination of presence of flames is provided. The system includes a photosensitive transducer configured to generate a response signal that is a function of electromagnetic radiation from a flame source. The system also includes a signal processing unit that includes a modulation unit and a demodulation unit. The modulation unit is configured to generate a modulated response signal by modulating the response signal with a modulation signal of frequency higher than that of an unwanted signal present the response signal. The demodulation unit is configured to determine an output signal by demodulating the modulated response signal. The demodulation unit eliminates the unwanted signal from the modulated response signal during the determination of the output signal. Further, the system also includes a processing unit configured to process the output signal to determine flame presence based on the intensity of the incident radiation from the flame.

Abstract translation: 提供了用于确定火焰存在的系统。 该系统包括被配置为产生响应信号的光敏换能器，该响应信号是来自火焰源的电磁辐射的函数。 该系统还包括包括调制单元和解调单元的信号处理单元。 调制单元被配置为通过使用频率高于存在响应信号的不期望信号的调制信号调制响应信号来生成调制的响应信号。 解调单元被配置为通过解调调制的响应信号来确定输出信号。 在确定输出信号期间，解调单元从调制的响应信号中消除不想要的信号。 此外，该系统还包括处理单元，该处理单元被配置为基于来自火焰的入射辐射的强度来处理输出信号以确定火焰存在。