基于分布式测温的危化品立库火灾定位系统  

Study of Fire Location System for Automatic Stereoscopic Warehouse of Hazardous Chemicals Based on Distributed Temperature Measuring

作　　者：刘学君[1] 卢浩[1,2] 李京[1,2] 刘威威 钟少龙[3] 戴波[1] LIU Xue-jun;LU Hao;LI Jing;LIU Wei-Wei;ZHONG Shao-long;DAI Bo(School of Information Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;School of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China;Shanghai Iinstitute of Microsystem and Information Technology Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]北京石油化工学院信息工程学院,北京102617 [2]北京化工大学信息科学与技术学院,北京100029 [3]中科院微系统与信息技术研究所,上海200050

出　　处：《控制工程》2020年第7期1175-1179,共5页Control Engineering of China

基　　金：北京市教委科技计划面上项目(15032221001/006);北京市教育委员会市属高校创新能力提升计划项目(2016014222000041);国家高技术研究发展计划资助项目(2014AA110501)。

摘　　要：立体仓库是目前危化品仓储的一大发展趋势,在对危化品仓库管理时,由于内部火灾载荷偏高、存储货物所具有的易燃易爆特性,需要对各货位进行火灾温度监管及高温点定位。基于拉曼散射的分布式测温技术进行了研究。采集温度数据的多模光纤被布于50个立体货位上,并于每个监控货位左右两侧设置长度2m的测温环,测温结构端选用中心波长为1550nm的高速脉冲光源,采集多模光纤后向反射的斯托克斯光及反斯托克斯光二者的光功率,实现对光纤上各测温段的温度数据采集。在测温环监测区域出现高温点时,对测温环的采集数据采用高斯拟合算法和误差补偿算法,保证高温监测点测温结果的准确度;设备连接PC机实现数据的汇总分析及显示,当检测值出现高温段时对高温货位位置予以显示及预警。实验结果表明,采用误差补偿算法前后,测量误差由10℃左右下降至5℃内,能在30 s内实现对高温情况的报警及问题货位定位,满足火灾定位的要求。Stereoscopic warehouse is one of the most important trends in the storage of hazardous chemicals.While managing the stereoscopic warehouse,due to the high internal fire load and the flammable and explosive chemicals,the temperature monitor is being needed extremely.Here the distributed temperature measurement based on Raman scattering is studied.Multimode fiber is being placed between 50 shelves to collect the temperature data.2 m temperature measuring ring is placed between each shelf.The system light source emits a high speed pulse light with a central wavelength of 1550 nm for collecting the optical filer’s reflection signal,after the calculation of Stokes and anti-Stokes light intensity,the temperature value of each fiber is calculated.When the detection value appears at high temperature,the gauss fitting algorithm and the error compensation algorithm are used to collect the temperature measurement data.The PC is connected with the acquisition equipment to collect and analyze the data.The system will alarm and the high temperature storage location will be displayed.The experimental results show that before and after using the error compensation algorithm,the measurement error reduces from 10℃to 5℃,and the system can alarm and point out the high temperature shelf in 30 s.

关 键 词：光纤测量 拉曼散射 光纤传感器 立体仓库 分布式光纤测温系统 火灾报警 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]