自上而下分为几排，上面透镜较多，下边较少。因为人脸部、膝部、手臂红外辐射较强，正好对着上边的透镜。下
zi shang er xia fen wei ji pai shang mian tou jing jiao duo xia bian jiao shao yin wei ren lian bu xi bu shou bi hong wai fu she jiao qiang zheng hao dui zhe shang bian de tou jing xia
排列在一个弧面上。警戒范围在不同方向呈多个单波束状态，组成立体扇形感热区域，构成立体警戒。菲涅尔透镜
pai lie zai yi ge hu mian shang jing jie fan wei zai bu tong fang xiang cheng duo ge dan bo shu zhuang tai zu cheng li ti shan xing gan re qu yu gou cheng li ti jing jie fei nie er tou jing
统，目前大都采用红外塑料透镜——多层光束结构的菲涅尔透镜。这种透镜是用特殊塑料一次成型，若干个小透镜
tong mu qian da dou cai yong hong wai su liao tou jing duo ceng guang shu jie gou de fei nie er tou jing zhe zhong tou jing shi yong te shu su liao yi ci cheng xing ruo gan ge xiao tou jing
线远距离控制型被动红探测器，适合保护狭长的走廊、通道以及封锁门窗和围墙。多波束型采用透镜聚焦式光学系
xian yuan ju li kong zhi xing bei dong hong tan ce qi shi he bao hu xia chang de zou lang tong dao yi ji feng suo men chuang he wei qiang duo bo shu xing cai yong tou jing ju jiao shi guang xue xi
外传感器上。这种方式的探测器境界视场角较窄，一般在5°以下，但作用距离较远，可长达百米。因此又称为直
wai chuan gan qi shang zhe zhong fang shi de tan ce qi jing jie shi chang jiao jiao zhai yi ban zai 5 yi xia dan zuo yong ju li jiao yuan ke chang da bai mi yin ci you cheng wei zhi
波束型和多波束型两种。单波束pir采用反射聚焦式光学系统，利用曲面反射镜将来自目标的红外辐射汇聚在红
bo shu xing he duo bo shu xing liang zhong dan bo shu pir cai yong fan she ju jiao shi guang xue xi tong li yong qu mian fan she jing jiang lai zi mu biao de hong wai fu she hui ju zai hong
m，正好在范围以内。 被动式红外探测器根据其结构不同、警戒范围及探测距离也有所不同，大致可以分为单
m zheng hao zai fan wei yi nei bei dong shi hong wai tan ce qi gen ju qi jie gou bu tong jing jie fan wei ji tan ce ju li ye you suo bu tong da zhi ke yi fen wei dan
体防范空间内的热辐射的变化。蜜桃成熟时1997红外传感器的探测波长范围是8～14μm，人体辐射的红外峰值波长约为10μ
ti fang fan kong jian nei de re fu she de bian hua mi tao cheng shu shi 1997 hong wai chuan gan qi de tan ce bo chang fan wei shi 8 14 m ren ti fu she de hong wai feng zhi bo chang yue wei 10
红外传感器）及报警控制器等部分组成。其核心部件是红外探测器件，通过关学系统的配合作用可以探测到某个立
hong wai chuan gan qi ji bao jing kong zhi qi deng bu fen zu cheng qi he xin bu jian shi hong wai tan ce qi jian tong guo guan xue xi tong de pei he zuo yong ke yi tan ce dao mou ge li
变电信号，而发出警报。警戒线一般可以达到数十米。 被动式红外蜜桃成熟时1997探测器主要由光学系统、热传感器（或称为
bian dian xin hao er fa chu jing bao jing jie xian yi ban ke yi da dao shu shi mi bei dong shi hong wai mi tao cheng shu shi 1997 tan ce qi zhu yao you guang xue xi tong re chuan gan qi huo cheng wei
进入探测区域时，现场的红外辐射稳定不变，一旦有人体红外线辐射进来，经光学系统聚焦就使热释电器件产生突
jin ru tan ce qu yu shi xian chang de hong wai fu she wen ding bu bian yi dan you ren ti hong wai xian fu she jin lai jing guang xue xi tong ju jiao jiu shi re shi dian qi jian chan sheng tu
器本身不发射任何能量而只被动接收、探测来自环境的红外辐射。探测器安装后数秒种已适应环境，在无人或动物
qi ben shen bu fa she ren he neng liang er zhi bei dong jie shou tan ce lai zi huan jing de hong wai fu she tan ce qi an zhuang hou shu miao zhong yi shi ying huan jing zai wu ren huo dong wu
einfareddetecto蜜桃成熟时1997r，pir）就是通过探测人体的红外进行报警。之所以称为被动红外，即探测
einfareddetecto mi tao cheng shu shi 1997r pir jiu shi tong guo tan ce ren ti de hong wai jin hang bao jing zhi suo yi cheng wei bei dong hong wai ji tan ce
9.5μm。 被动红外报警探测器人是恒温动物，红外辐射也最为稳定，被动红外报警探测器（passiv
9.5 m bei dong hong wai bao jing tan ce qi ren shi heng wen dong wu hong wai fu she ye zui wei wen ding bei dong hong wai bao jing tan ce qi passiv
波长范围蜜桃成熟时199725～1000μm 人体辐射的红外光波长3～50μm，其中8～14μm占46%，峰值波长在
bo chang fan wei mi tao cheng shu shi 199725 1000 m ren ti fu she de hong wai guang bo chang 3 50 m qi zhong 8 14 m zhan 46% feng zhi bo chang zai
，通常分为三个波段。 近红外：波长范围0.75～3μm 中红外：波长范围3～25μm 远红外：
tong chang fen wei san ge bo duan jin hong wai bo chang fan wei 0.75 3 m zhong hong wai bo chang fan wei 3 25 m yuan hong wai
红外热。而任何物体由于本身的物理和化学性质的不同、蜜桃成熟时1997本身温度不同所产生的红外辐射的波长和距离也不尽相同
hong wai re er ren he wu ti you yu ben shen de wu li he hua xue xing zhi de bu tong mi tao cheng shu shi 1997 ben shen wen du bu tong suo chan sheng de hong wai fu she de bo chang he ju li ye bu jin xiang tong
热辐射，而温度低于1725℃的物体产生的热辐射光谱集中在红外光区域，因此自然界的所有物体都能向外辐射
re fu she er wen du di yu 1725 de wu ti chan sheng de re fu she guang pu ji zhong zai hong wai guang qu yu yin ci zi ran jie de suo you wu ti dou neng xiang wai fu she
控制上。这次为了下一步的家庭安防蜜桃成熟时1997，对红外探测报警又仔细学习了一下：凡是温度超过绝对0℃的物体都能产生
kong zhi shang zhe ci wei le xia yi bu de jia ting an fang mi tao cheng shu shi 1997 dui hong wai tan ce bao jing you zai xi xue xi le yi xia fan shi wen du chao guo jue dui 0 de wu ti dou neng chan sheng
标签：家居 科学 生活 装修 为了猫厕所的自动通风，前段时间买了个红外感应开关，准备用在猫厕所的风机
biao qian jia ju ke xue sheng huo zhuang xiu wei le mao ce suo de zi dong tong feng qian duan shi jian mai le ge hong wai gan ying kai guan zhun bei yong zai mao ce suo de feng ji