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    	<div class="nyNewsDetail_Title"><h1>解读：红外热成像做体温筛检靠谱嘛？</h1></div>
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            <span><img src="/skins/158899/images/date01.png" />更新时间：2024-12-30</span><span><img src="/skins/158899/images/hit.png" />点击次数：853</span>
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            <p style="margin-bottom: 13px;margin-left: 0;text-indent: 0"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"></span></p><p style="text-align: left;"><span style="font-family: 宋体; font-size: 12px; letter-spacing: 0px;">前言</span><br/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体">红外热成像是怎么做人体测温的？为什么要用热成像测温做人体体温筛检？热成像体温筛检靠谱嘛？为什么有时候会出现人体测温显示</span><span style="font-family:宋体">20多度？种种疑问，听我来解答。</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体"></span></span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 505px; height: 281px;" src="https://img47.chem17.com/9/20241230/638711453490499279939.png" title="图片1.png" alt="图片1.png" width="505" height="281"/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体"></span></span><br/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">01什么是体温？</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp;</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体">首先我们要明确一点，体温</span><span style="font-family:宋体">≠体表温度，体温指的是人体的内部温度，临床上所指的体温是指平均深部温度。</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体">人作为恒温动物，体内温度会有一个正常的恒定范围（口腔舌下温度为</span><span style="font-family:宋体">36.3～37.2℃，直肠温度36.5～37.7℃，腋下温度36.0℃-37.0℃）。体温能很直观的反应人体的当前情况，一般大于37.3℃的人员都会被列为发烧。</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体"></span></span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 445px; height: 438px;" src="https://img43.chem17.com/9/20241230/638711454088655212602.jpg" title="图片2.jpg" alt="图片2.jpg" width="445" height="438"/></p><p><span style="font-family: 宋体; font-size: 12px; letter-spacing: 0px; text-align: justify; text-indent: 24px;">02什么是热成像？</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体">任何温度高于绝对零度（</span><span style="font-family:宋体">-273.15℃）的物体都在不停地发射红外辐射（热辐射）。红外辐射是一种电磁波，波长范围为在0.7um~1000um，人眼看不见，且不同温度对外辐射的波长不一样。吸收红外辐射后，热敏感材料（探测器）温度会升高，热成像设备进而根据相应的温升情况进行计算得到对应的温度信息。</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">03热成像怎么实现人体测温？</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">与e温枪原理类似，热成像也是通过检测人体表面（额头）的热辐射进行测温。</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px"><span style="font-family:宋体">直接测量得到的都是体表温度，一般在</span><span style="font-family:宋体">31~34℃之间，不过由于37℃正常体温这个概念深入人心，所以现在红外测温厂家基本都会把体表温度用算法补偿映射为人体内部温度。比如海康威视，热成像人体测温的设备就是通过测量获得的额温，再进行的测温补偿算法映射为真实人体温度。</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">04为什么我们用热成像去做初筛？</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp;</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">传统体温检测手段主要以接触式的er温枪和水银温度计为主，面对被检人员较多时，这类手段不仅需要投入大量的人力物力，成本高，而且检测费时，同时也增加了人员接触带来的安全风险。热成像去做体温初</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">筛，只要设定一个报警阈值，就能实现</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">非接触式人体测温，全自动报警，能够帮助用户快速安全地初筛出体温异常人员。再进行人工复测，能够大大提升检查效率。</span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 385px; height: 401px;" src="https://img49.chem17.com/9/20241230/638711454644897131790.jpg" title="555.jpg" alt="555.jpg" width="385" height="401"/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">05热成像测温有哪些影响因素，是否靠谱呢？</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">1.</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">使用热成像测温式，影响的外部因素主要有环境和目标距离。</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp; 先看看</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">测温环境</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">的影响：</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp; 环境温度，一来对人体测温这类高精度设备会有影响，尤其是北方的低温，二来室外环境下，人体体表的温度由于风吹日晒等的影响，也反馈不了正常的体温。这就好比冬天我们在室外觉得冷，是因为人体体表温度受环境影响降低了，所以会觉得冷。所以，热成像人体测温一般建议在室内相对稳定的环境下使用。</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">所以，热成像测温一般都是建议在室内的温度环境下进行测量。</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp; 传统红外热成像测温仪存在误识别其他高温物体，如手机、充电宝的情况，或者在大量人员通行相互遮挡时容易漏检或者难于确认超温目标。</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">海康威视热成像在传统热成像的基础上进行优化，加入人脸检测技术，只检测人脸区域温度。这样就能可以避免大量的其他高温物体带来的误报影响。</span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp;&nbsp;</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">再看看</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">目标距离</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">的影响：</span></p><p style="text-align: center;"><img src="https://img47.chem17.com/9/20241230/638711455114650997767.png" title="图片3.png" alt="图片3.png" style="text-align: center; max-width: 800px; max-height: 300%;"/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">&nbsp; 从热成像原理可知，</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">由于是接收物体的热辐射，而热辐射会随着距离衰减，所以距离越远，检测到的物体的热辐射会越小，体温也会越低。</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">就好像围坐在火炉旁，离得越远的往往越感受不到热量。</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">所以，热成像做体温筛检，都会有个推荐距离，原因是如果距离过远，则会出现测温数值偏低，导致测量不准确。</span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 510px; height: 281px;" src="https://img45.chem17.com/9/20241230/638711455748961024185.png" title="图片4.png" alt="图片4.png" width="510" height="281"/></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体, SimSun;"><span style="letter-spacing: 0px; font-size: 12px;">2.</span><span style="letter-spacing: 0px; font-size: 12px;">就产品而言，影响热成像测温精度的主要因素有：探测器、制造标定工艺、测温算法。&nbsp;</span></span></p><p style="margin-top:6px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:24px;padding:0 0 0 0 ;text-align:justify;text-justify:inter-ideograph"><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">综上所述，热成像人体体温筛查，相较专业医疗级测温手段，其具备非接触式测温、安全无感、快速高效等优点，是针对城市交通、学校、企业、写字楼、商超等快速体温筛查布控的好方案。</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">另外，</span><span style="font-family: 宋体;letter-spacing: 0;font-size: 12px">热成像人体测温对安装环境、检测距离等都有一定要求，在使用热成像人体测温的时候，建议在相对稳定的室内环境，并参考厂家推荐的安装距离测温。</span></p><p><br/></p> 
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