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红外IR LED在红外摄像机中的应用
发布时间: 2019-04-10 来源: 晶科电子 浏览:9804次

SUIZHEANFANGSHIPINJIANKONGXITONGGONGCHENGZHONGDUIYESHIJIANKONGDEXUQIUYUELAIYUEGUANG,HONGWAISHEXIANGJIYIJINGJINRULESHEXIANGJIDEZHULIUSHICHANG,XIAOLIANGYURIJUZENG,ZAIHONGWAIYESHIJISHUYINGYONGSHANGCHUXIANWENTIYEZHUJIANBAOLUCHULAI。

SHIJISHANG,YESHIJISHUSHIJIEZHUYUGUANGDIANCHENGXIANGQIJIANSHIXIANYEJIANGUANCHADEYIZHONGGUANGDIANJISHU。TABAOKUOWEIGUANGYESHIHEHONGWAIYESHILIANGLEI:WEIGUANGYESHIJISHUSHITONGGUODAIXIANGZENGQIANGGUANDEYIZHONGYESHIJISHU,TASHIJIJIUSHIDUIYETIANGUANGZHAOLIANGDEWEIRUOMUBIAOXIANGJINXINGZENGQIANG,YIGONGGUANCHADEGUANGDIANCHENGXIANGJISHU。ZHEILIZHUYAOJIANGZHUDONGHONGWAIYESHIJISHU,TASHITONGGUOZHUDONGZHAOSHEBINGLIYONGMUBIAOFANSHEHONGWAIYUANDEHONGWAIGUANGLAISHISHIGUANCHADEYIZHONGYESHIJISHU,QIDUIYINGZHUANGBEIWEIZHUDONGHONGWAIYESHIYI,SHIJIHEXINJIUSHIHONGWAISHEXIANGJI。

HONGWAIGUANGYUAN、YOUFEIZHISHIXINGGUANGDIANCHENGXIANGQIJIANCCDHUOCMOSTUXIANGCHUANGANQIWEIHEXINZUCHENGDESHEXIANGJIHECHENGXIANGHUAMIANSUOXUDEJINGTOUDENGPEIHEXUANZESHIZHUDAOHONGWAISHEXIANGJIYEJIANJIANSHIDEXIAOGUOYOULIEDESANDAYINSU。

一、红外光源的选择

HONGWAIGUANGSHIYIZHONGBOZHANGDAYU780nmDEBUKEJIANGUANG。YIBAN,CHANSHENGZHEIZHONGBUKEJIANGUANGDEFANGFAYOUXIALIESANZHONG。

①、ZHIJIESHIYONGBAICHIDENGHUOXIANDENGFACHUDEHONGWAIGUANG。JIZAIZHEILIANGZHONGDENGSHANGANZHUANGKEJIANGUANGLVJING,LVQUKEJIANGUANG,ZHIRANGKANBUJIANDEHONGWAISHEXIANSHECHU;

②、SHIYONGHONGWAIFAGUANGERJIGUANLEDHUOLEDZHENLIELAICHANSHENGHONGWAIGUANG。ZHEIZHONGQIJIANSHITONGGUOSHENHUAJIA(GaAs)BANDAOTIZHONGDEDIANZIYUKONGXUEFUHELAICHANSHENGHONGWAIGUANG;

③、SHIYONGHONGWAIJIGUANGERJIGUANLD,YEKEZUOHONGWAIGUANGYUAN。DANTAYAOBACHUYUJIAODINENGTAIDEDIANZIJIFAHUOBENGPUDAOJIAOGAONENGTAISHANGQU,TONGGUODALIANGLIZIFENBUFANZHUAN,GONGZHENERWEICHISHOUJIFUSHEHONGWAIGUANG。

DIYIZHONGGUANGYUANWEIREHONGWAIGUANGYUAN,QIZUIDADEYOUDIANSHIKEZHICHENGBIJIAODADEGONGLVHEDADEFUZHAOJIAODU,YINCIZHAOSHEDEJULIYUAN。QIZUIDABUZUZHICHUSHIBAOHANKEJIANGUANGCHENGFEN,JIYOUHONGBAO,QIESHIYONGSHOUMINGDUAN,RUGUOMEITIANGONGZUO10XIAOSHI,5000XIAOSHIZHINENGSHIYONGYINIANDUO,RUOKAOLVSANREBUGOU,SHOUMINGHAIYAODUAN。WEITIGAOREFUSHEHONGWAIDENGDESHOUMING,SHIYONGSHIHAIBIXUCAIYONGGUANGKONGKAIGUANDIANLU,YIJIANXIAOQIGONGZUOSHIJIAN。CIWAI,HAIZENGJIALEYANSHIKAIGUANDIANLUYIFANGHUANJINGGUANGDEGANRAO。

DIERZHONGSHISHIYONGBANDAOTISHENHUAJIAFAGUANGERJIGUANZHENLIEZUCHENGDEHONGWAIDENG,YOUQIXIANZAISHIYONGXINJISHUKAIFASHENGCHANDEZHENLIESHIJICHENGFAGUANGXINPIANLEDArray。QIYIGELED-ArrayDEGUANGXUESHUCHUDADAOLE800mw-1000mw,ERCHENGWEIPUTONGLEDDEHUANDAICHANPIN,LED-ArrayDEFAGUANGBANGONGLVJIAOWEI10-120°(KEBIANJIAO)。

YOUYULED-ArrayWEIGAODUJICHENGDELED,ERTIJIZHIYOUYIGEYIFENQIANYINGBIDEDAXIAO,ZAISHINEIKEJUNYUNZHAOLIANGQUANBUKONGJIAN,QISHOUMINGWEI50,000GEXIAOSHI。TAZUICHUSHIYUNYONGZAIHANGKONGFEIJISHANGMIAN,JINNIANLAIYOUYUMINYONGYEJIANJIANKONGSHICHANGDEFAZHAN,LED-ArrayCAIZHUBUZOUXIANGMINYONGSHICHANG,CHENGWEIGAOZHILIANGYEJIANJIANKONGDEYIZHONGLIXIANGXUANZE。

SUIRAN,HONGWAILEDJILED-ArrayTAOTAILEREHONGWAIGUANGYUAN,DANDUIYU1kmYISHANGDECHAOYUANJULICHANGJINGDEJIANKONG,HAISHIYAOXUANZEHONGWAILDGUANGYUAN。YINWEIBANDAOTIJIGUANGQIJUYOUBILEDLIANGDUGAO、FANGXIANGXINGQIANGDENGTEDIAN。

TONGCHANG,ZAIXUANZEHONGWAIGUANGYUANSHIYAOZHUYIYIXIADEJIGEYAODIAN。

A、红外灯距离选择要留有余量

XUANZEHONGWAIDENGSHI,TEBIEZHUYIBIAOCHENGJULIYUSHIJIFUZHAOJULIDECHAJU。YINWEIYOUXIESHENGCHANCHANGBIAOCHENGDEKESHIJULIWANGWANGPIANDA,SUOYIZAIXUANZEHONGWAIDENGFUZHAOJULISHIYAOJINXINGSHIJICESHI,BINGQIEYAOLIUYOUCHONGZUDEYULIANG,CAINENGSHISUOGUANCHADECHANGJINGDEZHAODUKEKAO。

B、应选用稳流源驱动的光源

YINWEILEDSHIDIANLIUQUDONGQIJIAN,QIFAGUANGLIANGDUYUGONGLVTONGQUDONGDIANLIUCHENGZHENGBI,ERBUSHIDIANYA。YINCI,WEIBAOCHIFAGUANGQIANGDUBUBIAN,BIXUYAOXUANYONGWENLIUYUANQUDONGDEGUANGYUAN。

C、要选用散热好的光源

YINWEIFAGUANGGUANDOUYOUFAREYUSANREWENTI,YOUQIGONGLVDAJULIYUANDEGUANGYUANFARELIANGDA,SUOYIBIXUYAOXUANYONGSANREHAODEGUANGYUAN,CAINENGBAOZHENGGONGZUOWENDINGKEKAO。

D、要选用有光控开关自动控制电路的供电电路并与灯板分开的红外光源

YINWEIHONGWAIDENGDEGONGDIANDIANLUYUDENGBANBUFENKAI,JIUHUIYINGFAGUANGGUANGONGZUOCHANSHENGDERELIANGYINGXIANGGONGDIANDIANLUDEYUANJIANXINGNENG,CONGERDAOZHIFAGUANGGUANFAGUANGBUWENDING,YOULEZHEIZHONGGUANGKONGKAIGUANDEDIANLU,JIUNENGSHIHONGWAIDENGBAITIANGUANBI,YEWANDAKAI。

E、要根据监视距离选用红外灯

YINHONGWAIFAGUANGERJIGUANLEDKEZHUANGZAIJINGTOUSHANG,YUGANHONGWAISHEXIANGJIPEIYONG,HUOZHIJIEZHUANGZAISHEXIANGJIYUJINGTOUJIEKOUZHOUWEIDEJIQIAOSHANG。XIANRAN,ZHEILIANGZHONGZHUANGPEIDEHONGWAILEDSHAO,QIZHAOSHEDEJULIKENDINGBURUDANDUDEHONGWAILEDDENGZHAOSHEDEYUAN。YIBAN,50mYISHANG,ZUIHAOXUANYONGDANDUDEHONGWAIDENGWEIHAO,LINGLDDUOYONGYU1kmYISHANGJULIDEJIANKONGCHANGJINGDEYESHIZHAOMING,DANLDDEGUANGSHUXIERQIANG,WEISHIHONGWAIGUANGSHUZHAOLIANGYIDINGFANWEIDECHANGJING,SHIYONGSHIHAIXUYAOTONGGUOYIGEKUOSHUJINGTOUKUOSHUCAIXING。

二、摄像机的选择

MUQIANSHEXIANGJIDEGANGUANGQIJIANYOUCMOSYUCCDLIANGZHONG。TONGCCDYIYANG,CMOSTUXIANGCHUANGANXINPIANDUIHONGWAIGUANGBOYEYOUFANYING,DANTAZAI890-980nmFANWEINEILINGMINDUBICCDTUXIANGCHUANGANXINPIANYAOGAOCHUXUDUO,BINGSUIBOZHANGZENGJIAERSHUAIJIANDETIDUYEMANYIXIE。SUIZHECMOSTUXIANGXINPIANDEFEISUFAZHAN,QIZAOYINXUNHAOJINYIBUJIANGDI,QIEXINGGUANGJIDECMOSSHEXIANGJIYEYIYOUMIANSHI。YINCI,BUYIDINGJUXIANZAICCDSHEXIANGJIZHONGXUANZE,KECHONGFENLIYONGGEZIDEYOUSHIXUANQU。YIBAN,HONGWAISHEXIANGJIDEXUANZEYAODIANRUXIA。

A、应选低照度摄像机,其照度要求一般≤0.02Lux

YOUXIESHEXIANGJIZHIZAOSHANGHUOXIAOSHOUSHANGXUBAOZUIDIZHAODU,SHIYESHIYOUXIAOJULIDADAJIANGDI,YINCIZUIHAONENGJUTICESHI。

YUEGUANGJIHEXINGGUANGJIDENGZENGGANDUSHEXIANGJIKEGONGZUOZAIHENANDETIAOJIANXIA,DANYOUXIEFANGUANGXISHUXIAODEDIFANGHAISHIDABUDAOYAOQIU,RUSHAMO,LVDI,LINQUDENG。ZAIZHEIZHONGQINGKUANGXIA,JIUXUYAOCAIYONGYOUGAOXINGNENGXIANGZENGQIANGQIHECCIRZHISHIDEHEIBAICCDTONGGUOXIANWEIMIANBANHEGUANGZHUIZHIJIEOUHEERCHENGDEWEIGUANGYESHISHEXIANGJI。ZONGZHI,ZHAODUYUEDIYUEHAO,YOUYUMUQIANHAIBUGUIFAN,BUNENGXIANGXINSHENGCHANCHANGSUOBIAOCHENGDEZUIDIZHAODU,YAOZAISHIYONGTIAOJIANXIAJINXINGCESHIWEIHAO,TONGCHANGZHAODUYAOQIUYIBAN≤0.02Lux。

B、选用的红外摄像机图像传感器的尺寸越大越好

YIN1/4CCDBUNENGYONGYU15mYISHANGHONGWAIYESHIDEYOUXIAOJULI,YINWEI1/4CCDDEGUANGTONGLIANGZHIYOU1/3CCDDE50%。ERCCDCHICUNDA,JIESHOUDEGUANGTONGLIANGDA;CCDCHICUNXIAO,JIESHOUDEGUANGTONGLIANGJIUSHAO。SUOYI,YESHISHEXIANGJIDUOXUAN1/2DECCD,1/3DEYAOCESHIKEXINGDEYEKE,DANJUEDUIBUNENGXUAN1/4DE。

C、红外摄像机要有自动电子快门与自动增益控制(AGC)功能

YINWEIYOULEZHEIXIEGONGNENG,CAINENGSHIXINHAODIAOZHENGDAOBIJIAOHAODEZHUANGTAI,YIMANZUGUANCHADEXIAOGUO。

D、需隐蔽场合选CMOS超微型摄像机

YOUYUDIGONGHAO、GAOJICHENG、XIAOTIJIZHIYOUCMOSTUXIANGCHUANGANQICAINENGBANDAO,YINERKEZUOCHENGCHENSHANNIUKOU、XIZHUANGNIUKOUBANDAXIAODECMOSSHEXIANGJI。JIASHANGXIANGYINGDEHONGWAIGUANGYUANDEGENGJIAXIAOXINGHUA,YIJIGAOXIAONENGDIANCHIDETUICHU,SHIDISANZHIYANJINGJIANGHUIWUCHUBUZAI。ZHEIYANG,DAISHANGYIFUYESHIYANJINGHEYIDINGPEIYOUHONGWAIGUANGYUANHECMOSCHAOWEIXINGSHEXIANGJIDEMAOZI,HEIYEJIANGRUTONGBAIZHOU。XIANRAN,ZHEIJIANGGAIBIANWOMENZHENGGESHEHUISHENGHUODEMIANMAO。

E、选配好摄像机的配套稳压小电源

SHEXIANGJIDEDIANYUANDEXUANQUYAOZHUYIRUXIALIANGDIAN

1、XUANWENYADIANYUAN。YINSHIDIANAC220VBUWEN,RUZHIXUANYIJIAOLIUBIANZHILIU12VDEBIANYAQIERBUWENYAJIUHUISHISHEXIANGJIZHONGDEDIANLUGONGZUOBUWENDING,CONGERSHISHEXIANGJIDEGONGZUOBUWEN,SUOXUXINGNENGJIUDABUDAOYAOQIU;

2、XUANBISHEXIANGJIDEDIANLIUYAODAJINYIBEIYISHANGDEXIAODIANYUANWEIHAO。RUSHEXIANGJIDEDIANLIUWEI200mAHUO250mA,YIBANXUAN500mAJIZUGOU。RUOXUANTAIDARU1AGONG1TAISHEXIANGJIJIUTIJIPIANDAYUJIAQIANPIANGUI;TAIXIAORUDENGYUSHEXIANGJIDEDIANLIUJIUKENENGFARE(YINLIANXUGONGZUOSHIJIANTAIZHANG)ERYINGXIANGKEKAOXINGYUGONGZUOSHOUMINGDENG。

三、镜头等的选择

SHEXIANGJIJINGTOUSHIHONGWAISHEXIANGJIDEGUANJIANSHEBEI,TADEZHILIANG(ZHIBIAO)YOULIEZHIJIEYINGXIANGDAOXITONGDECHENGXIANGXIAOGUO,YINCI,JINGTOUXUANZESHIFOUQIADANGJIGUANXIDAOXITONGZHILIANG,YOUGUANXIDAOGONGCHENGZAOJIA。YINCI,ZAIXUANZEJINGTOUSHIYAOZHUYIYIXIAJIGEYAODIAN:

A、最好选红外镜头

YINPUTONGDEGUANGXUEJINGTOU,WUTIFANSHEHUIJINGTOUDEHONGWAIGUANGBUNENGYOUXIAOJUJIAODAOCCDBAMIANSHANG,CISHIHONGWAIYESHIXIAOGUOJIUHUIDADAZHEKOU,YINERZUIHAOXUANYONGHONGWAIJINGTOU。YOUQISHICAIZHUANHEISHEXIANGJI,BUXUANYONGHONGWAIJINGTOUJIUBUNENGSHIRIYEJIANSHIJIAOMIANYIZHI,ZHISHIRIYETUXIANGBUNENGDOUBAOCHIQINGXI。

B、选用镜头的成像尺寸最好与摄像机中图像传感器的尺寸一致

XUANYONGDEJINGTOUDECHENGXIANGCHICUNYINGYUSHEXIANGJIZHONGTUXIANGCHUANGANQIDECHICUNYIZHI,RUTUXIANGCHUANGANQIDECHICUNSHI1/2“,ZEJINGTOUDECHENGXIANGCHICUNBIXUSHI1/2“DE。

DANGJINGTOUDECHENGXIANGCHICUNBISHEXIANGJIGANGUANGMIANDECHICUNDASHI,BUHUIYINGXIANGCHENGXIANG,DANSHIJICHENGXIANGDESHICHANGJIAOYAOBIGAIJINGTOUDEBIAOCHENGSHICHANGJIAOXIAO,ERDANGJINGTOUDECHENGXIANGCHICUNBISHEXIANGJIDEGANGUANGMIANDECHICUNXIAOSHI,JIUHUIYINGXIANGCHENGXIANG,BINGBIAOXIANWEICHENGXIANGDEHUAMIANSIZHOUBEIJINGTONGZHEDANG,ZAIHUAMIANDESIGEJIAOSHANGJIUHUICHUXIANHEIJIAO。

YOUCIKEZHI,DUI1/3“DESHEXIANGJI,KEXUANYONG1/3“、1/2“HE2/3“DEJINGTOU;DUI1/2“DESHEXIANGJI,KEXUANYONG1/2“、2/3“DEJINGTOU,ERBUNENGYONG1/3DEJINGTOU。YINWEICCDJIUXIANGRENDEYANJING,JINGTOUJIUXIANGRENMENYONGDEYANJING,YANJINGTAIXIAO,YANJINGJIUHUIKANBUQINGZHOUBIANDESHIWU。

C、最好选镜头与摄像机的接口安装方式一致

JINGTOUYUSHEXIANGJIDEJIEKOUANZHUANGFANGSHIYOUCXINGANZHUANGHECSXINGANZHUANGLIANGZHONG,LIANGZHEZUIHAOYIZHI。RUGUOXUANYONGLECXINGJINGTOU,ZEXUJIAYI5mmHOUDEJIEQUANJIKE。RUOBUJIAJIEQUANJIUZHIJIEJIEDAOCSJIEKOUSHEXIANGJISHANG,ZEKENENGSHIJINGTOUDEHOUJINGMIANPENGDAOCCDDEMINGANMIANDEBAOHUBOLI,ERZAOCHENGCCDSHEXIANGJIDESUNHUAI,ZHEIYIDIANZAISHIYONGZHONGXUTEBIEYINQIZHUYI。

D、最好选自动光圈镜头,以适应昼夜照度很大的变化

YOUYURIYEJIANKONG,QIZHAODUBIANHUAFANWEIHENDA,YINERZUIHAOXUANYONGNENGZIDONGGENJUZHAODUBIANHUADEZIDONGGUANGQUANJINGTOU,YISHITUXIANGBAOCHIQINGXI。

E、镜头的分辨率与透光率要达到要求

YONGDECHENGXIANGJINGTOUDEFENBIANLVBIXUYAODAYUSHEXIANGJIDEFENBIANLV,FOUZEDABUDAOSUOYAOQIUDEQINGXIXIAOGUO。BINGQIEJINGTOUZHONGJINGPIANDETOUGUANGLVYAOHAO,JIDUIGUANGDESHUAIJIANYAOFEICHANGXIAO。

F、监视距离1公里以上,还需选用激光扩束准直镜头

YAOGENJUYUGUANCHACHANGJINGDEDAXIAOYUJULIXUANZEHESHIDEJIGUANGKUOSHUZHUNZHIJINGTOU,SHIJIGUANGSHUNENGZHAOLIANGSUOXUJIANKONGDECHANGJING,YIBIANJIANKONGCHANGJINGDEFANSHEGUANGNENGBEISHEXIANGJISUOJIESHOU。

G、注意选择有性能好的视窗玻璃的防护罩

CHUXUANHONGWAIDENG、SHEXIANGJI、JINGTOUWAI,HAIYAOZHUYIFANGHUZHAO、GONGDIANDIANYUANDENGDECHENGTAOZONGHEKAOLV。YINWEIFANGHUZHAODUIHONGWAIDENGDEXIAOGUOJIUYOUYINGXIANG,RUHONGWAIGUANGTONGGUOBUTONGJIEZHI,TOUSHELVHEFANSHELVJIUBUTONG。LIRU,BUTONGDESHICHUANGBOLI,TEBIESHIZIDONGCHUSHUANGDUMOBOLI,DUIHONGWAIGUANGDESHUAIJIANYEBUTONG,SUOYIYAOZHUYIXUANZEJUYOUXINGNENGHAODESHICHUANGBOLIDEFANGHUZHAO。

四、结语

YOUSHANGKEZHI,SANZHONGHONGWAIGUANGYUANGEYOUQIYOULIE,DANREHONGWAIGUANGYUANJIBENBEIHONGWAILEDJILED-ArrayGUANGYUANSUOTAOTAI。YINWEIYONGLED-ArrayYEWANQUANKEZHAOSHEDAOJIBAIMIJIANKONGCHANGJINGDEJULI。ZHIYU1kmYISHANGDECHAOYUANJULIDEJIANKONGCHANGJING,HAISHIYINGXUANYONGHONGWAILDGUANGYUANWEIHAO。YINWEITADELIANGDUGAO,YIGELDDINGHAODUOLED,SUOYIHONGWAILDGUANGYUANDETIJIXIAO、ZHONGLIANGQING,SHICHAOYUANJULIDEZUIJIAXUANZE。

HONGWAISHEXIANGJIDEXUANZEZUIZHONGYAODEWENTISHICHENGTAOXING。CHUXUANHAOHONGWAIGUANGYUANWAI,DUISHEXIANGJI、JINGTOU、FANGHUZHAO、GONGDIANDIANYUANDENGDEPEITAOYAOZONGHEKAOLV。ZHIYOUANWENZHONGSUOSHUDEXUANZEYAODIANZONGHEKAOLVLE,CAINENGQUDAOSHIBANGONGBEIDEXIAOGUO。


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