Comparative Thermometery in Paediatric Age Group: Is the Non-Touch Infrared Thermometer (NTIT) Reading Comparable to Regular Mercury-in-Glass Thermometer (MIGT) Reading?

Background: Accurate temperature measurement is a critical step in evaluating health or disease especially in children and immmunocompromised subjects;inaccurate measurement may lead to improper diagnosis, wrong treatment or inappropriate intervention. Several methods of temperature measurements exist and comparing these gives room for choosing a near ideal method in terms of speed, safety and accuracy. The study aimed to compare the forehead non touch infra-red thermometer with the axilllary mercury-in-glass method of temperature measurement in the Paediatric age-group. Methods: Study was given ethical approval as part of a larger study. Four hundred and thirty seven children aged 1 to 24 months were studied at the well-baby/immunizationclinic of the University of Ilorin Teaching Hospital over a 6-months period. Both non-touch infrared and theregular mercury-in-glass thermometers were used to take the body temperatures. Data were analysed with SPSS version 21. Pearson correlation was used to determine the relationship between the two methods of temperature measurements, while Bland-Altman method was used to test for level of agreement between them. Results: The mean age and SD was 5.81 ± 4.04 months. Pearson correlation showed a positive correlation between the axillary mercury-in-glass and forehead non-touch infra-red thermometry readings (r = 0.281, p < 0.001). Also, Bland-Altman method revealed a good agreement between both methods of thermometry as 96% of the readings were within the limits of agreement. Mean difference was 0.09°C (95% confidence interval 0.05 - 0.13). Conclusion: Axillary mercury-in-glass thermometer and forehead non touch infra-red thermometers have a good agreement and can be used interchangeably.

A Study on the Optimal Offset Distance Between a Welding Torch and the Infrared Thermometers

Detection of weld defects using real-time monitoring and controlling algorithm is of the significant task in manufacturing industries due to the increased production and liability costs that result when weld defects are not identified early in the production cycle.Monitoring and controlling for robotic arc welding process employed should be reliable,flexible and cost-effective in non-clean,high-volume production environments.Also,the robotic welding system has been utilized a complex jigging and mechanical devices to move the workpiece which related to the stationary welding head for getting higher efficiency and lower costs.To develop the fully robotic welding system,people make use of their senses of sound and/or sight to collect welding information,and take the necessary corrective measurements to ensure the weld quality after processing is satisfactory.Therefore,it is really required that the monitoring and controlling algorithm of sensors for increasing effectiveness in the robotic welding process has been developed.In this paper,bead-on-plate welding using an infrared thermography in the robotic GMA(Gas Metal Arc)welding process has been performed to study the effects of welding parameters on thermal profile characteristics and find the optimal offset distance which applied for monitoring and controlling of welding quality such as bead height.The analysis for correlation between temperature distributions at three offset distance and bead height which based on the regression analysis such as Standard Error of Estimate(SEE),the coefficient of correlation(R)and coefficient of determination(R2)and(Predictive Ability of Model)has been done.The infra-red sensor is useful for monitoring the isotherm radii that arise during the robotic welding process and identifying bead height as welding quality.

Does central tympanic membrane perforation affect infrared tympanic thermometer measurements in adults?

Objective: Infrared Tympanic Thermometer(ITT) is one of the most useful instruments for accurately measuring temperature. The effects of ear pathologies on ITT measurement remain unclear. The purpose of this study is to determine if tympanic membrane perforation(TMP) affects ITT measurements in adult patients.Material and methods: A total of 90 adult patients with monaural central TMP were enrolled in this study.Patients were categorized into three subgroups according to perforation size(1-3 mm, 4-7 mm, and 8-10 mm).The tympanic temperatures of the affected and unaffected sites, and subgroups were compared with each other.Results: This study contained 54(60%) males and 36(40%) females ranging from 20 to 58 years of age(mean age: 30.74 ± 9.61 years). The mean tympanic temperature of the side affected with TMP was 36.34 oC ± 0.61 oC.The mean tympanic temperature of the unaffected side with healthy and intact tympanic membrane was 36.33 oC ± 0.6 oC. The Pearson correlation score for the tympanic temperatures and the size of TMP was 0.22 which was not significant(r=-0.12).Conclusion: TMP and perforation size do not affect ITT measurements in adult patients.

喷油润滑内齿圈外圆面红外测温及误差分析

高速重载人字齿轮箱的摩擦功率损失会转换成为温升,齿面温度测量是评价齿轮箱润滑和冷却设计的重要手段。针对某人字齿轮箱中内齿圈外圆面温度的在线实时准确测量需求,提出了一种基于红外测温仪的旋转齿轮表面温度测量方法,并分别设计搭建了相关测试试验装置。首先,分析了基于红外测温仪的旋转齿轮表面温度测量误差的影响因素;其次,通过试验对待测齿面的发射率进行标定;最后,开展了不同转速工况下的喷油润滑齿轮表面温度测量试验,并分析了吹气压力和吹气温度对红外测温误差的影响。研究结果表明:待测齿面喷涂黑色哑光漆后的标定发射率为0.96,而红外测温光路上的光学镜片会使红外测温值低2℃左右;带有空气吹扫管的红外测温仪可以在线实时测量旋转内齿圈外圆面的温度,且红外与热电偶测温值的最大相对误差不超过7%;选择合适的空气吹扫压力和吹扫温度,可以进一步减小红外测温误差。

不同品牌红外耳温计在儿童患者中的临床应用差异性研究

目的:探讨不同品牌红外耳温计在儿童患者中的临床应用差异性,以指导合理使用红外耳温计。方法:随机选取2023年5月至2023年7月在浙江大学医学院附属儿童医院接受治疗的164例住院及门诊患儿,采用进口(品牌A)、国产(品牌B)和合资(品牌C)3种不同品牌的红外耳温计,以同样的测量方式测量患儿耳温,比较不同品牌耳温计在不同年龄段患儿中测量的温度和时间的差异性。结果:测量温度上,A测量为(37.54±0.931)℃,B为(37.219±0.952)℃,C为(37.329±0.961)℃;测量时间上,A测量时间为(2.34±0.236)s,B为(1.314±0.269)s,C为(2.051±0.173)s。3种耳温计测量温度及时间比较,差异均有统计学意义(F=5.007,264.988,P<0.05)。且3种耳温计测量≤3个月龄患儿的温度,差异有统计学意义(F=3.868,P<0.05);在3月龄以上患儿中无差异。结论:针对不同的年龄段患儿,医疗机构可依据使用成本高低、测量时间快慢等因素综合考虑进行选择。对3个月以上年龄段患儿,选择成本更低、测量时间更快的品牌B红外耳温计;对0~3月龄患儿,建议选择温度测量值更为准确的品牌A红外耳温计。

红外耳温计测量结果的不确定度评定

红外耳温计相对于传统的玻璃体温计、医用电子体温计等,具有测量过程时间短、使用方便和非接触性等优点,在医疗卫生行业、商场等人流量密集场所和个人家庭中都有广泛使用。本文主要对红外耳温计测量结果示值误差的不确定度进行评定。

海峡两岸红外及电子体温计标准比对分析

红外及电子体温计在两岸疫情防控和日常医疗中应用广泛,其相关技术标准共通则显得尤为重要。内地和台湾地区红外及电子体温计技术标准有一定的共性,如测温原理和基本技术指标,但在测量范围和精度等要求上存在显著差异。本研究通过对两岸技术标准展开系统性对比,分析两岸关键技术指标的异同,为两岸红外及电子体温计标准的优化和统一提供科学依据,从而提高两岸体温计的互通性和整体质量,为未来两岸在医疗器械领域融合发展奠定基础。

红外测温仪在碳化硅单晶生长炉中的应用

碳化硅单晶生长炉的温度监测及控制是碳化硅晶体生长工艺的关键。针对碳化硅单晶生长炉的高温测量需求及使用工况,分析了红外测温仪测温的工作原理及分类,研究了碳化硅单晶生长炉的测温结构及温度控制技术。通过引入模糊PID算法实现了热场温度的稳定控制,经过升温测试试验,达到碳化硅工艺生长的要求。

疫情防控背景下基于人脸识别及测温技术的智能门禁应用

通过深入研究人脸识别和测温技术,实现了门禁系统的智能化,旨在为疫情防控提供更高效、更安全的解决方案。该应用系统将人脸识别技术和红外测温技术相结合,在快速准确识别出入人员身份信息的同时实现体温快速检测,并对通行人员进行记录和统计,为疫情防控提供更加全面的数据支持。

Investigation on the Application Value of Infrared Forehead Temperature Gun in Body Temperature Screening of New Crown Epidemic

The outbreak of the novel coronavirus pneumonia has had a great impact on the life safety of our people and social production activities.Therefore,it is very important and meaningful to analyze the application value of infrared forehead thermometers in body temperature screening under the new crown pneumonia epidemic and propose improved measures for body temperature detection.This paper summarizes the questionnaire on the application value of infrared forehead thermometer in body temperature screening and the results of staff interviews,and analyzes the principle of infrared forehead thermometer temperature measurement to explain the factors that affect the accuracy of temperature measurement results.Finally,it is concluded that the reflected radiation of the environment and the temperature measurement distance affect the accuracy of the temperature measurement results of the infrared forehead gun.

监护仪体温传感器、非接触式红外线体温计与水银体温计测量结果对比

目的 比较监护仪体温传感器、非接触式红外线体温计与水银体温计体温测量值的差异性,为临床应用提供参考。方法 选取2021年9月—2022年8月在天津市某三级甲等医院发热门诊就诊的840例患者为研究对象,对患者同时使用监护仪体温传感器、非接触式红外线体温计与水银体温计进行体温测量,并比较三者间的差异。结果 3种体温计测量体温结果差异有统计学意义(P<0.05),分析发现,3种体温测量方法在夏季、冬季、发热组差异有统计学意义(P<0.05)。以水银体温计测量结果为金标准,监护仪体温传感器、非接触式红外线体温计的灵敏度分别是94.444%、79.914%,特异度分别是99.731%、93.279%。监护仪体温传感测量结果的灵敏度、特异度均高于非接触式红外线体温计(P<0.05)。监护仪体温传感器、非接触式红外体温计测得体温值与水银体温计测得的体温值差值相比分别有1.19%(10/840)、2.62%(17/840)的点在95%一致性界限以外。结论 在临床应用中监护仪体温传感器更适合替代水银体温计进行体温监测。

红外测温仪在圆钢测温控制系统中的应用研究

仪表信号采集是生产过程控制中的重要环节,通过红外测温仪、可编程逻辑控制器(Programmable Logic Controller,PLC)和视窗控制中心(Windows Control Center,WinCC)相结合形成测温控制系统。将此系统应用于圆钢加热过程,能够快速、准确且可靠地监测钢材表面温度,使工人能够及时发现并解决问题,在提高工作效率的同时保证产品质量。

Use of infrared emission detection thermometer in Chinese neonates

Objective To evaluate the reproducibility of ThermoscanTM, an inf rared emission detection ear thermometer, and to establish the normal reference range of ear temperature in Chinese neonates Methods Neonates were recruited from the inpatients population with e xclusion of those suffering from infections Results Fortynine neonates were recruited with 1?115 temperature tak in g sessions Mean left ear temperature was 3664035 Mean right ear te mper ature was 3664037 Clinical repeatability for left and right ear was 017 and 017, respectively Conclusion Thermoscan produced reproducible results in Chinese neonates The normal range of ear temperature for Chinese neonates is 35 to 37 Ea r temperature >378 should be regarded as fever

耳温枪在发热病人筛查中的应用价值

目的:评价耳温枪在筛查发热病人中的价值,并确认用于判断发热的最佳界值,为临床使用耳温枪测温提供依据。方法:选取苏州市某三级甲等医院2021年1月—5月外科病房病人1106例,采用同期自身对照方法,同时使用水银体温计和耳温枪测量病人体温。结果:Bland-Altman结果显示耳温口温测量一致性较好。口温与耳温均值在总体组、非发热组和发热组比较差异均有统计学意义(P<0.001)。口温为37.3℃~38.0℃发热截断值时,耳温枪精度随着温度的升高而升高;以口温37.3℃、37.5℃、37.8℃、38.0℃为发热截断值时,相对应耳温的最佳界值为37.15℃、37.35℃、37.45℃、37.55℃。结论:耳温枪快速便捷、交叉感染风险低、灵敏性较高,可以替代水银体温计筛查发热病人,耳温枪筛查发热的最佳界值可根据口温判断发热的温度设定。

常用测温方法的一致性及对《护理学基础》教学的启示

目的比较耳温枪、非接触式红外测温仪所测温度与水银体温计所测口温之间的差异与一致性,寻找可替代水银体温计的测温方法。方法便利选取2021年3—5月骨科住院患者720例。采用自身同期对照设计,用耳温枪测量鼓膜温度,非接触式红外温度仪测量前额、耳后和内关温度,同时以水银体温计测量口腔温度作为标准参照,使用配对t检验和Bland-Altman分析方法比较这4种测温方式所测温度与口温之间的差异和一致性。结果4种测温方式中,仅耳后温与口温差异有统计学意义(P<0.001);鼓膜温与口温95%一致性界限范围最窄,为(-0.605,0.601),95%一致性界限外数据点占比3.06%,均优于其他测温方式所测温度。结论耳温枪所测鼓膜温与水银体温计所测口温的一致性相对较好,在水银体温计停产后,可以优先选择耳温枪替代水银体温计测量患者体温。

陕西省2017—2020年212所医疗机构水银血压计和体温计及相应替代产品使用现状调查

目的对2017—2020年陕西省212所医疗机构水银血压计和体温计及相应替代品使用现状进行调查,结合陕西省履约现状提出该省目前医疗卫生行业含汞产品替代意见。方法采用分层随机抽样方法选择陕西省的医院及基层医疗卫生机构,调查2017—2020年不同级别医疗机构水银血压计和体温计及相应替代产品的使用情况。结果共调查陕西省212所医疗机构,其中医院57所、基层医疗卫生机构155所。2017—2020年各年份医疗机构水银血压计每床位使用量分别为0.073、0.068、0.066、0.059台;2020年较其他年份低;基层医疗机构每床位使用量较医院高;差异均有统计学意义(均P<0.05)。各年份水银体温计每床位使用量分别为2.185、2.121、1.916、2.631支;2019年低于2017年,差异有统计学意义(P=0.027)。各年份无汞血压计每床位使用量分别为0.014、0.015、0.028、0.038台;采购量分别为176、325、468、511台;2019、2020年医院无汞血压计每床位使用量高于基层医疗机构,差异均有统计学意义(均P<0.05)。无汞体温计每床位使用量分别为0.010、0.011、0.013、0.028支;采购量分别为173、221、227、684支;医院每床位使用量高于基层医疗机构,差异均有统计学意义(均P<0.05)。对含汞废物临时储存方式的调查中,有50.88%的医院、46.45%的基层医疗卫生机构混入医疗废物中直接处置;对含汞废物处置方式的调查中,有19.30%的医院、16.77%的基层医疗卫生机构自行处理(填埋、堆存、循环利用)。结论陕西省医疗机构水银血压计与体温计的每床位使用量逐年降低,相应替代品的每床位使用量逐年增多。该省医疗机构在积极履行《水俣公约》,履行效果初显。

环境因素影响下特高压电压致热型设备表面温差修正方法研究

1000 kV电容式电压互感器(Capacitor Voltage Transformer,CVT)、1000 kV气体绝缘金属封闭开关设备GIS(Gas Insulated Switchgear)出线套管、1000 kV避雷器是特高压变电站内主要的电压致热型设备,其内部缺陷具有表面温差小、热点不明显的特点,且易受环境因素影响,通常需要在理想环境条件下开展红外精确测温进行缺陷诊断。然而若现场环境条件短时间内无法满足要求,则可能导致缺陷的进一步发展,因此有必要研究非理想环境条件下测温结果的修正方法。本文建立了3类特高压电压致热型设备的温度场仿真计算模型,结合传热学理论研究了光照强度、环境温度、风速大小等环境因素对特高压电压致热型设备表面温差的影响规律,结果显示,3种因素的增强均会导致表面温差不同程度地下降,需将其修正至理想环境条件下的真实温差。最后利用数据拟合的方法,获得各类环境因素影响下实测温差与真实温差的曲线表达式,进一步总结出非理想环境条件下特高压电压致热型设备表面温差的修正方法,并通过变电站现场应用验证了修正结果的准确性。

红外温度计在带蒂股前外侧皮瓣阴茎再造术后测温中的应用

目的:了解红外温度计在带蒂股前外侧皮瓣阴茎再造术后测温中的应用效果。方法:选取我院2022年1月—12月接受股前外侧皮瓣阴茎再造的22例病人,观察皮瓣存活情况,正常成活9例,设为正常存活组;出现早期血供不佳征象并通过高压氧治疗后好转11例,设为早期缺血组;局部液化坏死经换药愈合2例,设为部分坏死组。于病人术后返回病房即刻、返回病房12 h、返回病房24 h与返回病房48 h采用红外温度计测量病人皮瓣与皮瓣来源对侧大腿皮肤温度,记录并计算差值。结果:病人术后返回病房即刻、返回病房12 h、返回病房24 h与返回病房48 h的皮瓣温度均低于皮瓣来源对侧大腿皮肤温度。病人返回病房48 h时,13例皮瓣血液供应不佳的病人中有11例病人经高压氧治疗后皮瓣平均温度与皮瓣来源对侧大腿皮肤平均温度差值从≥2.0℃降至1.2℃,部分坏死组2例病人皮瓣温度下降不多,其皮瓣远端出现部分坏死,换药后大部分存活。结论:红外温度计在带蒂股前外侧皮瓣阴茎再造术后护理中具有良好的应用效果。

浅谈红外测温仪的测量问题

文中简要概述了红外测温仪的测温原理,通过辐射源尺寸效应实验进一步说明红外测温仪受到辐射源直径大小的影响情况。最后提到在计量红外测温仪时需要注意的问题,以得到更加准确的测量结果。

医用额温枪红外温度传感器检测系统研究

新冠疫情爆发期间,医用额温枪等测温检测设备成为医院重要的防疫物资。基于AST2000测试平台,研究了一种红外温度传感器检测系统,搭建硬件检测电路并设计了上位机软件测试平台。该系统设计了10组检测模块,通过测试额温枪红外温度传感器关键参数,实现多模块、并行测试,相较医学工程科室正常采用的单一异常设备测量方式效率提高9倍,检测时间缩短至3000 ms之内。所设计检测系统既能提高医院医学工程科室检修测温设备异常的效率,避免错判、漏判,又能减少设备外送检测、维修时间,同时还能降低疫情防控期间医院的防疫风险,规避体温监测异常带来的不良后果。