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智能光谱气体检测技术赋能石化工业安全低碳高端发展 被引量:1
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作者 林融 《自动化仪表》 CAS 2024年第4期1-8,13,共9页
石化工业安全和环保生产形势与监管法规对智能光谱气体泄漏检测技术的应用需求强烈。首先,对比归纳了传统气体检测技术与光谱气体检测技术的优缺点。其次,介绍了国内外智能光谱气体检测技术现状,并着重剖析了在国内石化工业已获得局部... 石化工业安全和环保生产形势与监管法规对智能光谱气体泄漏检测技术的应用需求强烈。首先,对比归纳了传统气体检测技术与光谱气体检测技术的优缺点。其次,介绍了国内外智能光谱气体检测技术现状,并着重剖析了在国内石化工业已获得局部成功应用的红外热成像仪、多频红外气体检测成像仪、傅立叶变换红外气体检测仪、激光雷达气体检测成像仪和智能巡检机器人等基于智能光谱气体检测技术装备的检测原理、技术特点及适用范围。第三,分析了智能光谱气体检测技术在石油化工典型场景的应用案例。最后,对我国智能光谱气体检测技术的发展思路提出了建设性意见,并给出了“加速推进智能光谱气体检测技术的研发及推广应用能够为石化工业安全低碳高端发展赋能”的结论。 展开更多
关键词 石化工业 智能光谱 气体检测 微机电系统 朗伯-比尔定律 非色散红外光谱 傅立叶变换红外光谱 光致电离
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A low-cost in-situ CO_(2) sensor based on a membrane and NDIR for long-term measurement in seawater 被引量:2
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作者 Meng LI Baolu DU +3 位作者 Jinjia GUO Zhihao ZHANG Zeyu LU Rong’er ZHENG 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2022年第3期986-998,共13页
The multi-point simultaneous long-term measurement of CO_(2) concentration in seawater can provide more-valuable data for further understanding of the spatial and temporal distribution of CO_(2).Thus,the requirement f... The multi-point simultaneous long-term measurement of CO_(2) concentration in seawater can provide more-valuable data for further understanding of the spatial and temporal distribution of CO_(2).Thus,the requirement for a low-cost sensor with high precision,low power consumption,and a small size is becoming urgent.In this work,an in-situ sensor for CO_(2) detection in seawater,based on a permeable membrane and non-dispersive infrared(NDIR)technology,is developed.The sensor has a small size(Ф66 mm×124 mm),light weight(0.7 kg in air),low power consumption(<0.9 W),low cost(<US$1000),and high-pressure tolerance(<200 m).After laboratory performance tests,the sensor was found to have a measurement range of(0–2000)×10^(-6),and the gas linear correlation R^(2) is 0.99,with a precision of about 0.98%at a sampling rate of 1 s.A comparison measurement was carried out with a commercial sensor in a pool for 7 days,and the results showed a consistent trend.Further,the newly developed sensor was deployed in Qingdao nearshore water for 35 days.The results proved that the sensor could measure the dynamic changes of CO_(2) concentration in seawater continuously,and had the potential to carry out long-term observations on an oceanic platform.It is hoped that the sensor could be applied to field ocean observations in near future. 展开更多
关键词 in-situ sensor dissolved CO_(2) long-term measurement permeable membrane non-dispersive infrared(ndir) LOW-COST
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Observation and modeling of vertical carbon dioxide distribution in a heavily polluted suburban environment 被引量:3
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作者 BAO Zhongxiu HAN Pengfei +6 位作者 ZENG Ning LIU Di CAI Qixiang WANG Yinghong TANG Guiqian ZHENG Ke YAO Bo 《Atmospheric and Oceanic Science Letters》 CSCD 2020年第4期371-379,共9页
The vertical distribution of carbon dioxide(CO2)is important for the calibration and validation of transport models and remote sensing measurements.Due to the large mass and volume of traditional instruments as well a... The vertical distribution of carbon dioxide(CO2)is important for the calibration and validation of transport models and remote sensing measurements.Due to the large mass and volume of traditional instruments as well as supporting systems,in-situ measurements of the CO2 vertical profile within the boundary layer are rare.This study used a miniaturized CO2 monitoring instrument based on a low-cost non-dispersive infrared(NDIR)sensor to measure the CO2 vertical profile and meteorological parameters of the lower troposphere(0–1000 m)in southwestern Shijiazhuang,Hebei Province,China.The sensors were onboard a tethered balloon with two processes:the ascending process and the descending process.The results showed that the overall trend of CO2 concentration decreased with height.Weather conditions and CO2 emission sources caused fluctuations in CO2 concentrations.The CO2 concentration varied from morning to afternoon due mainly to the faster spread of air mass during daytime,with strong convections and the accumulation of emissions at night.The low-cost sensor produced results consistent with the traditional gas chromatography method.The Weather Research and Forecasting model could not capture the CO2 profiles well due mainly to the bad performances in boundary layer height and the potential outdated fossil fuel emissions around the experimental site.This experiment is the first successful attempt to observe the CO2 vertical distribution in the lower troposphere by using lowcost NDIR sensors.The results help us to understand the vertical structure of CO2 in the boundary layer,and provide data for calibrating and validating transport models. 展开更多
关键词 Low cost sensor co2 vertical profile tethered balloon meteorological conditions non-dispersive infrared(ndir)
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基于非分散红外光谱原理的火箭煤油蒸汽检测仪的设计 被引量:1
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作者 曹晔 张光友 李珍 《导弹与航天运载技术》 北大核心 2013年第2期79-81,共3页
在对火箭煤油红外吸收光谱研究的基础上,通过选择适当的电调制光源、探测波长的滤光片等,设计由光源、气体吸收池、探测器和相应的驱动电路及数据采集与处理系统组成的基于非分散红外光谱(NDIR)原理的火箭煤油蒸汽检测仪。该仪器具有灵... 在对火箭煤油红外吸收光谱研究的基础上,通过选择适当的电调制光源、探测波长的滤光片等,设计由光源、气体吸收池、探测器和相应的驱动电路及数据采集与处理系统组成的基于非分散红外光谱(NDIR)原理的火箭煤油蒸汽检测仪。该仪器具有灵敏度高、寿命长、响应快等优点,在火箭煤油安全检测方面具有较好的实用价值。 展开更多
关键词 液体火箭推进剂 非分散红外光谱 火箭煤油 气体检测仪
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