北京11选5走势图

北京11选5走势图 > 服务与支持 > RFID学堂 > 随着RFID走热,设计机会将会激增!

随着RFID走热,设计机会将会激增!

2020-04-19

简介: RFID也许还没有广泛普及,但正在逐渐取得成功。

作者:Jack Shandle 来源:贸泽电子

ZAIZAOSHANGDAODABANGONGSHIDENEIYIKEWEIZHI,KENENGBUZHIBUJUEJIANYIJINGSHIYONGLE4CISHEPINBIAOQIAN(RFID),FENBIESHI:ZAICHARUCHEYAOCHI、GUANBIFADONGJIFANGDAOSUOZHIXITONGDIANLUZHISHI;ZAIKAICHEJINGGUOWURENSHOUFEIZHANZIDONGFUFEIZHISHI;ZAISHIYONGSHOUJIZHIFUZAOSHANGDERENIUNAIKAFEIZHISHI;ZAILIYONGSHENFENZHENGJIANDENGJIJINRUBANGONGSHIZHISHI。RFIDYEXUHAIMEIYOUGUANGFANPUJI,DANZHENGZAIZHUJIANQUDECHENGGONG。

北京11选5走势图DIYIPIYOUSHEPINSHURUGONGDIANDEWUYUANYINGDAQIKEYIZHUISUDAO20SHIJI70NIANDAICHU,DANGSHIJIUXIANGJINTIANDADUOSHUGESHIGEYANGDERFIDYINGYONGQINGJINGYIYANG。ZHENGSHIYOULEJINTIANBANDAOTIJISHUDEKEXIJINBU,CAISHIDERFIDZHENZHENGKAISHITENGFEI。

ZAISHANGYESHICHANGZHONG,RFIDTIGONGLESHIWUQIANLIDEJIHUI,TONGGUOTIGONGFEICHANGXIZHIDESHUJUYIJISHIZHIFUHEJILUBAOLIUDENGFUWUSHIXIANZIDONGHUA,KEYITIGAOGONGZUOXIAOLVBINGGAISHANYONGHUTIYAN。RFIDBEIGUANGFANYONGYUGEZHONGYINGYONG,RUSHENGCHUSHENFENSHIBIE、LINGSHOUKUCUNGUANLI、BINGLIGUANLI、DIANZIBUTINGCHESHOUFEI、DIANZIHUZHAO,YIJIGENGJINYIXIEDESHOUJI,TAMENJIANGSHITEDINGRFIDJISHUDEZHONGYAOTUISHOU。

北京11选5走势图RFIDBIAOQIAN(RFIDDESHENFENBUFEN)SHICHANGZHENGZAIKUAISUZENGZHANG,BINGYOUWANGDEDAOJIASUFAZHAN。LIRUIDTechExGONGSIJIUYUCE,DAO2021NIAN,WUYUANRFIDBIAOQIANSHULIANGJIANGCONG2011NIANDEBUDAO30YIGEZENGZHANGDAOYUE2500YIGE。

北京11选5走势图CONGGONGCHENGJIAODUKAN,RFIDBUSHIYIZHONGDANYIJISHU,TASUIPINLVGAIBIANERBIANHUA。QIKEYICAIYONGXUDUOZHONGZAIBOPINLV,DANZHUYAOSHIYIXIASANZHONG:DIPIN(LF)SHIYONG 125kHzZHI135kHzPINDUAN,GAOPIN(HF)GONGZUOZAI13.56MHzPINDUAN,UHF(CHAOGAOPIN)ZHUYAOZAI865MHzZHI955MHzPINDUANZHONGSHIYONG,SUIRANTAYEKENENGBAOHAN 2.4GHzPINDUAN。BIAO1LIECHULEZHEISANZHONGZHUYAORFIDPINDUANDEYINGYONGHEDUQUFANWEI。

BIAO1:RFIDPINDUANJIYINGYONG

 

 

DADUOSHURFIDXITONGSHEJIGONGZUOZHUYAOJIZHONGZAIDUQUQIXITONGSHANG。DUQUQIDESHEJIZHUYAOQUJUEYUBANDAOTIGONGSISHEJIHEZHIZAODEYINGDAQI(BIAOQIAN)DEYINGYONGHETEXING。YIBANLAISHUO,YOULIANGZHONGLEIXINGDEBIAOQIANKEYIYONGLAIYUDUQUQITONGXIN:DAIQIANRUSHIDIANCHIDEYOUYUANBIAOQIAN,HEBUDAIDIANCHIDEWUYUANBIAOQIAN。WUYUANBIAOQIANGENGJIACHANGJIAN,BENWENJIANGZHITAOLUNWUYUANBIAOQIAN。

耦合技术

北京11选5走势图DIANCIOUHEZAIJUEDINGWUYUANBIAOQIANDEDUQUFANWEIFANGMIANFAHUIZHEZHONGYAOZUOYONG。LFHEHF RFIDXITONGSHIYONGDIANGANOUHE:NENGLIANGTONGGUOGONGXIANGCICHANGCONGDUQUQIXIANQUANCHUANSONGDAOYINGDAQI(BIAOQIAN)XIANQUAN。

LFHEHFXITONGZHONGDEDUQUQITIANXIANHUIZAIYIGEBEICHENGWEIJINCHANGDEDIANCIQUYUZHONGCHANSHENGYIGEQIANGDACICHANG(JUTIANXIANZUIDUOYUEYIGEBOZHANGDEJULI)。ZHEIGECICHANGDEQIANGDUZUYIHUANXINGBIAOQIAN,BINGJITATIGONGJIANGSHENFENSHUJUCHUANSONGJIDUQUQISUOXUDEDIANNENG。DIANGANOUHEHAIKEYITONGGUOXIANGTONGDENENGLIANGCHUANSONGJIZHIYONGYUXIANGBIAOQIANXIERU。TU1YANSHILEDIANGANOUHEDEGAINIAN。

 

图1: 用于LF和HF系统(包括NFC)的电感耦合发生在近场区域内

UHF RFIDXITONGGONGZUOZAIJUTIANXIANYUELIANGGEBOZHANGDAOWUXIANYUANDE“YUANCHANG”,KEYISHIXIANBILFHEHFXITONGGENGDADEDUQUFANWEI。BIAOQIANTIANXIANLIYONGYIZHONGBEICHENGWEIHOUXIANGSANSHEOUHEDEJISHUJIESHOUDUQUQITIANXIANDEDIANCINENGLIANG,RFIDXINPIANZAISHIYONGZHEIGENENGLIANGGAIBIANTIANXIANSHANGDEFUZAI,BINGFANSHEHUIBAOHANSHENFENXINXIDEGAIBIANHOUXINHAO。

ZAISHIJIYINGYONGZHONG,BIAOQIANSHIZHENDUITEDINGYINGYONGSHEJIDE,ZAIPINLV、NEICUNRONGLIANG、ZHICHIDEBIAOZHUNHETIANXIANSHEJIFANGMIANDOUYOUSUOBUTONG。Texas InstrumentsDETag-itTM HF-I PlusYINGDAQI (595-RI-I03-112A-03) ZAIWEIXIAODEJUXINGWAIXINGZHONGTIGONGLE2kbDENEICUN,SHIHEYONGYUCHANPINJIANDING、ZICHANGUANLIHEGONGYINGLIANGUANLI。TASHIYIZHONGGONGZUOZAI13.56MHzPINLVDEHFBIAOQIAN。ZAINEICUNFANWEIDELINGYIDUAN,NXPGONGSIDEHITag® μYINGDAQI (771-HTMS1101FTBAF1) JICHENGLE128kbDENEICUN。TASHIYIZHONGLFBIAOQIAN,SHIHEYONGYUSHENGCHUSHIBIE、XIYIZIDONGHUAYIJIPIJIUTONGHEMEIQIGUANDEWULIUYUNSHU。

设计目标

TEDINGRFIDXITONGDUQUQIDETEXINGHENDACHENGDUSHANGQUJUEYUJUTIYINGYONG,SUIRANYOUYIXIEMUBIAOKUAYUELEYINGYONGJIEXIAN。JIUXIANGZAIDADUOSHUGONGCHENGXIANGMUZHONGCHENGBENHENZHONGYAO,ZHEITONGCHANGYIWEIZHEYAOJINLIANGJIANSHAOSUOXUCAILIAO,BINGJINLIANGTIGAOBIAOQIANZHIZAOSHANGTIGONGDEFUJIAJIAZHI,RUKAIFAGONGJU、CANKAOSHEJIHERUANJIAN。JIXIESHEJIYINGGAIJIANGUNAIYONG,BINGTIGONGFANGPOHUAIBAOHUGONGNENG,LINGWAIHAIYAOZHUYIXITONGSUOZAIDIZHENGFUDEPINLVFENPEI。XITONGHENRONGYIBUSHUHECAOZUOYEHENZHONGYAO,YINWEIZUIZHONGYONGHUBUSHIJISHURENYUAN。

近场通信

北京11选5走势图GONGHAOYEFEICHANGZHONGYAO,YOUQISHIDUIYUDIANCHIGONGDIANDEYINGYONG,LIRUDAIQIANRUSHIJINCHANGTONGXIN (NFC) GONGNENGDEZHINENGSHOUJI。SUIRANNFCSHIRFIDJISHUDEYIGEZIJI,DANTAJUYOUYIXIEDUTEDEZENGQIANGXINGNENG:

GENGDUANJULI - NFCDEDUQUJULITEBIEDUAN (<10 cm),YINCIKEYIFANGZHIYIXIEOURANHUOWEISHOUQUANDELIANLUHUODONG。JIAMIZEQUEBAOLEGENGGAODEANQUANXING。

北京11选5走势图ZHIGUANDELIANJIEGUOCHENG - NFCDUIZUIZHONGYONGHUYAOQIUJIDI。BIRU,JUYOUNFCGONGNENGDEZHINENGSHOUJIZHIXUBICIHUOYUNFCDUQUQIKAOJINHUOSAOGUOYIXIAJIUNENGQIDONGHUIHUA。

NENGGOUYUWUYUANDERFIDCHANPINJINXINGTONGXIN - NFCZAIZIWOGONGDIANSHEBEIZHIJIANDEGONGZUOFANGSHISHICHUANTONGDEFANGSHI。TAHAIZHICHIYUFEIJIECHUSHIZHINENGKAHUORFYINGDAQIDENGWUYUANSHEBEIDETONGXIN。

北京11选5走势图YULANYAHEWi-FiXIEZUO - CHULEYURFIDJISHUSHIBUCHONGGUANXIWAI,NFCHAIJUYOUYUSHIYONGLANYAHEWi-FiWUXIANWANGLUODESHEBEIJINXINGTONGXINDENEIZHIGONGNENG。YINCI,NFCZAIXIANYOUJISHUZHIJIANTIGONGLEDUOXIEYIQIAOJIE。

JUIMS ResearchGONGSIYUCE,NFCYINGYONGJIANGKUAISUZENGZHANG,ERSHOUJISHIBEIHOUDEZHUYAOTUIDONGLI。SUIZHEZHIZAOSHANGZAISHOUJICHANPINZHONGJIANGWUXIANTONGXINYUZHIFUJISHUZUOWEISHISHISHANGDEBIAOZHUN,JUYOUNFC GONGNENGDESHOUJISHULIANGCONG2012NIANDAO2017NIANJIANGZENGJIA10BEI,DADAO12YIBU。JINNIANDECHUHUOLIANGYUJIJIANGZENGZHI2.68YITAI,JIAO2012NIANDE1.2YITAIZENGZHANG123%。ZHUYAODENFCYINGYONGBAOKUO:

YULEMENPIAO、CHENGZUOCHUZUCHEHUORENHEPOSJIYINGYONGDEZHIFU;LINGWAISHANGDIANDAIJINQUANYEKEYICUNCHUZAINFCSHOUJIZHONG。

北京11选5走势图SHIYONGNFCZHINENGSHOUJISHIXIANDALOUANFANGDESHENFENYANZHENGHEMENJINKONGZHI;LINGWAIHAIYOUDIANNAODENGLU、SHANGSUO/JIESUOCHEMENDENG。

ZAIZHINENGSHOUJI、SHUMAXIANGJIHEPINGBANDIANNAODENGNFCCHANPINZHIJIANJINXINGDIANDAODIANDESHUJUCHUANSONG。

北京11选5走势图YULANYAHUOWi-FiJIANLITONGXINLIANLUSHIXIANSHUJUCHUANSONG。

北京11选5走势图TIGONGDUISHUZIXINXIDEFANGWEN,YINWEINFCSHEBEIJIANGNENGGOUBAZHINENGHAIBAOZHONGDERICHENGBIAODUQUDAONFCSHOUJI;CONGZHINENGHAIBAOXIAZAIDITU;ZAINIDESHOUJISHANGJILUNITINGCHEDEDIFANG。

NFC技术基础

北京11选5走势图NFC GONGZUOZAI13.56MHzPINLVFANWEI,SHUJUCHUANSONGSULVCONG106kb/sDAO424kb/s。WEILEJINLIANGTIGAOQISHIYONGXING,GAIJISHUXIANGHOUJIANRONGJIYUISO/IEC 14443 AHEISO/IEC 14443 BDEZHINENGKAXIEYI,YIJISUONIDEFeliCa™KA (JIS X 6319-4)。

WEILESHIXIANLIANGGENFCSHEBEIZHIJIANDEXINXIJIAOHUAN,YEJIEKAIFALEYIZHONGXINDEXIEYI,BINGZAIECMA-340HEISO/IEC 18092BIAOZHUNZHONGDUIQIJINXINGLEDINGYI。NFCLUNTANKAIFALEXIANGGUANDEGUIFAN,YONGYUQUEBAONFCCHANPINDEHUCAOZUOXING。NFC YOUSANZHONGGONGZUOMOSHI:

ZAIKAPIANMONIMOSHI(WUYUANMOSHI)XIA,NFCSHEBEIXIANGXIANYOUFUHEMOUGECHUANTONGBIAOZHUNDEFEIJIECHUKAYIYANGGONGZUO。

北京11选5走势图ZAIDU/XIEMOSHI(YOUYUANMOSHI)XIA,NFCSHEBEISHIYOUYUANDE,BINGDUQUHUOXIERUCHUANTONGDEWUYUANRFIDBIAOQIAN。

ZAIDIANDUIDIANMOSHIXIA,LIANGGENFCSHEBEIJIAOHUANXINXI。FAQISHEBEI(LUNXUNSHEBEI)DEGONGHAOBIDU/XIEMOSHIXIADI,YINWEIMUBIAO(JIANTINGSHEBEI)SHIYONGZIJIDEDIANYUAN。

北京11选5走势图SANZHONGCHUANTONGMOSHIZHONGDEMEIYIZHONGDOUYOUZIJIDECHUANSONGJISHU:NFC-A(XIANGHOUJIANRONGISO/IEC 14443 A)、NFC-B(XIANGHOUJIANRONGISO/IEC 14443 B)HENFC-F(XIANGHOUJIANRONGJIS X 6319-4)。

WEILEZHICHICHUANTONGJISHU,NFCSHEBEIBIXULUNXUNJIANTINGSHEBEI(BIAOQIAN)YIQUEDINGSHIYONGNAZHONGXIEYI:NFC-A、NFC-BHUONFC-F。TU2ZHANSHILELUNXUNXULIEDEZHUYAOLIUCHENG。

 

图2:决定NFC通信协议的轮询流程

ZAINFCXITONGSHEJIZHONG,KONGZHIQIXINPIANBANYANZHEZHONGYAOJIAOSE。JUEDINGSHIYONGNAZHONGTONGXINMOSHIZHISHIKAISHI。ZAIQITADEDIANXINGMCURENWUZHONG,KONGZHIQIBIXUJIANKONGSHOUFAQI、DIANYUANGUANLIHEZHUJIJIEKOU。NFCTEDINGJIEKOUBAOKUOANQUANFANGWENMOKUAI (SAM) JIEKOU、YONGHUSHENFENMOKUAI (SIM) JIEKOUHEFEIJIECHUJISHU (CLESS) JIEKOU。

NXP PN544 (771-PN5441A2EC20501) SHIYIKUANGONGNENGQIQUANDENFCKONGZHIQI,JUYOUQIANRUSHI80C51NEIHE,SHIHEJICHENGDAOYIDONGDIANHUAZHONG。YUEDUQIDUANDEYINGYONGBAOKUOYIDONGZHIFUSHEBEI、JIAOTONGHEHUODONGPIAOWUYIJIDUIXIANGJIAOHUAN(LIRUDIANZIMINGPIANHESHUZIQUANLI)。Texas InstrumentsDETRF7970ARHBT (595-TRF7970ARHBT) ZHICHIXIANGTONGDEYINGYONGFANWEI。

结论

 

北京11选5走势图SUIRANRFIDYINGYONGTONGCHANGBUSHIGAOXINGNENG、GAOSUSHEJI,DANYOUYUSHEJIBUTONGBIAOZHUN、PINLVXUANZEYIJIZUIZHONGYAODEYINGYONGYAOQIU,SUOYIZHENGGEXITONGDEFUZADUFEICHANGGAO。MEIGEXINDESHEJIDOUHUIDAILAIYOUGUANANQUAN、FANWEI、 XINHAOFANGXIANG、HUANJINGTIAOJIAN、GONGHAO、NEICUNYAOQIUHEJIEKOUSHEJIFANGMIANDEJUECE。BUGUO,YIDANXITONGJIAGOUKAOLVCHENGSHU,ZHUYAOYOUBANDAOTIGONGSITIGONGDEZHONGDUOSHEJIGONGJUHEKAIFATAOJIAN,JIUNENGBANGZHUWOMENDEXIANGMUZOUXIANGCHENGGONG。

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北京11选5走势图GONGXINBUBEIAN:YUEICPBEI16014917HAO-1 YUEGONGWANGANBEI 44030502000466HAO