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红外热像技术在房屋建筑检测中的应用 总被引:2,自引:0,他引:2
红外热像技术是一种较新的工程检测方法,应用红外热像技术可对某些重点工程结构的关键部位进行检测,对原有建(构)筑物进行安全鉴定。论文介绍了房屋建筑无损检测的现状,并利用红外热像技术对一些房屋外墙进行了现场检测,通过实际操作和结果分析,对使用红外热像技术检测房屋建筑提出了建议。 相似文献
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红外热像检测技术有非接触、高识别率的特点。采用红外热像仪,对采煤机截齿截割煤岩试件过程中的温度场变化以及红外热像特性进行研究,获取不同工况下不同磨损程度的截齿截割的红外热像图。分析表明,截割过程中齿尖一侧存在细微的温度特异点。采用IRIB进行整体温度处理发现,截割试件强度越大,一侧存在的温度特异点越明显,温度特异点变化快慢与截齿腐蚀磨损程度呈非线性的增长趋势。红外热辐射测温的理论推导验证了该方法的准确性。 相似文献
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This paper describes an Infrared (IR) thermography based technique for sorting of iron ores consisting of alumina-rich particles of relatively low thermal absorptivity as compared to iron-rich particles in the ores. The technique primarily consists of selection of iron ores with Fe compositions ranging from 59 to 69 wt.% and alumina (Al2O3) from 0.35 to 8.85 wt.%, crushing the ores up to the particle size range around 10 mm. The iron ore fines are uniformly heated using heat source of wavelength ranging from 10−2 to 10−6 m for a period of time sufficient to create a difference in infrared emission between the ore particles. The thermal image of the heated ores is captured by IR thermography. The alumina-rich iron ore particles are heated up less as the thermal absorptivity of these ores is less than the ores with high iron content. Thus, the alumina-rich iron ore particles can be identified by observing the temperature profile and/or thermal image of these ores. This technique of ore recognition can be useful in improving the feed quality of iron ore to the blast furnace in iron and steel industries by rejecting the alumina-rich ores through modification in the presently existing processes. 相似文献
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This publication introduces new corrosion tests with practical results and short-term tests with new analytical systems (e.?g. thermography, laser triangulation) for the automotive industry. The corrosion process, the factors and parameters affecting it (production of metals up to and including painting) are being recorded by sensors, stored as data, and processed. The corrosion results are used for Industry 4.0 tools. Simulations of corrosion on samples and small components have been carried out in the recent past and have been compared to empirical values. 相似文献
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一氧化碳(CO)是一种有毒有害的气体,它给工业安全生产带来巨大危害。在煤矿井下,CO是引起瓦斯爆炸的主要气体之一,近年来,我国煤矿多次发生瓦斯爆炸事故,伤亡人数超过全部重大事故伤亡人数的一半。 相似文献
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基于红外吸收原理的气体检测 总被引:23,自引:1,他引:23
对红外吸收气体检测进行了原理介绍和优点分析。从消除发光光源功率不稳定和探测器灵敏度不稳定性的因素出发,设计了分时差的双光源和双探测器的气室结构。采用单片机作为智能处理,设计了气体检测系统的原理框图,并对系统进行了硬件和软件框图的设计。 相似文献
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基于电话网络的防盗报警系统可用于多种需要安全防盗场合的实时监控。系统采用热释电红外传感技术进行人体非法进入识别,检测到危险情况后,可以选择现场警告、电话报警、通知相关人员等多种方式进行处理。其显示模块采用液晶多页面显示技术,系统信息丰富,用户界面友好,控制方便。该系统通过测试,取得了很好的效果。 相似文献