基于双波长光电传感的抗干扰烟雾报警器研究  

Research on smoke alarm with anti-interference based on dual-wavelength photoelectric sensor

作　　者：代云志 李开远 刘红奎 袁宏永 DAI Yunzhi;LI Kaiyuan;LIU Hongkui;YUAN Hongyong(Anhui Theone-safety Limited Company,Hefei 230031,China;Institute of Public Safety Research,Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Hefei KDLIAN Safety Technology Company Limited,Hefei 230093,China)

机构地区：[1]安徽泽众安全科技有限公司,合肥230031 [2]清华大学工程物理系公共安全研究院,北京100084 [3]合肥科大立安安全技术有限责任公司,合肥230093

出　　处：《火灾科学（中英文）》2024年第2期95-102,共8页Fire Safety Science

基　　金：应急管理部消防救援局科技计划项目(2020XFCX30);安徽省重点研究与开发计划项目(2022m07020012)。

摘　　要：推动火灾探测报警器的技术升级,对于保障人民群众生命财产安全具有重大意义。目前,主流独立式感烟火灾探测装置由于依赖单频光谱与烟雾作用信息进行火灾报警,存在抗干扰能力差、灵敏度低等问题。基于球形粒子的Mie散射理论,提出了一种改进的双波长烟雾检测方法,通过抗干扰逻辑运算测量散射光差异来减少误报。该方法提高了光电传感装置对非火灾因素的抗干扰性,具备优异的抗灰尘、抗水雾干扰能力以及火灾信息探测的高灵敏度,对火灾烟雾的灵敏度达到0.21 dB/m。在饱和烟雾浓度下,探测器烟雾响应时间约3 s,实现快速响应烟雾能力。Promoting the technological advancement of fire detectors and sensors is crucial for ensuring the safety of lives and properties.Currently,mainstream independent smoke fire detectors heavily rely on single wavelength spectrum and smoke action information for fire alarms,which poses challenges in terms of limited sensitivity and susceptibility to interference.Based on Mie scattering theory of spherical particles,this paper proposes an improved dual-wavelength smoke detection method,which can reduce false positives by measuring the difference of scattered light through anti-interference logic operation.This technology improves the anti-interference of photoelectric sensing devices to non-fire factors,has excellent anti-interference ability for dust and mist,and has a high sensitivity for fire information detection.The sensitivity to fire smoke reaches 0.21 dB/m.Under the saturated smoke concentration,the smoke response time of the detector is about 3 s,realizing the ability of rapid response to smoke.

关 键 词：双波长光 火灾探测 烟雾传感 抗干扰 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] X915.5[自动化与计算机技术—控制科学与工程]