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基于PoE电源的解决方案_dvvt发动机是什么意思

发布时间:2020-01-11    信息来源:nanofib.com    作者:儒安机械

基于PoE电源的解决方案

XINPIZHUNDEIEEE802.3afGUIFANGUIDINGZAIEthernetWANGLUOSHANGYUNXUTONGSHICHUANSONGDCDIANYUANHESHUJU。YONGKEDEDAODE13WZUOYOUDEDIANYUAN,HENDUOZHUANGZHIKEYOUTAMENDE EthernetLIANJIEGONGDIAN,ERDIANYUANBUYONGLAIZIQIANGSHANGACCHAKOU。KEYONGEthernetLIANJIEGONGDIANDEZHUANGZHIBAOKUOSHUZIVoIP DIANHUA,WANGLUOWUXIANJIERUDIAN, PDACHONGDIANTAI、HVACHENGWENQIHUOYOUQIANGCHAKOUGONGDIANDERENHELIANJIEEthernet DEDIGONGLVSHUJUZHUANGZHI。

SUIZHEEthernetLIANJIEZENGJIADIANYUAN,XUYAOANQUANZHUANGZHIBAOHUTONGYONGPCHEXISHANGDIANNAOMIANZAO48VDIANPINGPOHUAI。

EthernetLANXIANGONGDIAN

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基于PoE电源的解决方案_dvvt发动机是什么意思

PDTEXING

SUOYOUPD(PoweredDeviceYONGDIANZHUANGZHI)ZAIDIANYA2.7VHE10.1VZHIJIANTANCESHI,DIANYUANSHURUBIXUCHENGXIAN25KΩZUOYOUTEZHENGZUKANG。YUNXUTEZHENGZUKANGJUYOUGAODA 1.9VPIANYICHUANLIANDAOSUOYUNXUDEERJIGUANPIANZHIDIANYUANDIAOZHENGHEZIDONGJIXINGDIANLU(TU2)。CITEZHENGDUIPSESHIYIZHONGZHIBIAO,BIAOMINGXIANMODUANDEZHUANGZHISHIYIGEYOUXIAODEPD,BINGQIE48VBUHUISUNHUAITA。WANGLUOJIEKOUKAHEFEIYONGDIANCHAKOUTONGCHANGCHENGXIANCHU150ΩZUOYOUDEGONGMOZUKANG,ZHEIYUYOUXIAOPDZUKANGXIANGCHASHENYUN。

LINGWAI,ZAI15VHE20VZHIJIANTANCESHI,HUIZAIZHONGDUANCHENGXIANKEBIANDETEZHENGZUKANG。“FENLEI”(ClassificaTIon)TEZHENGBIAOMINGPDCONGPSEJIQUDEZUIDAGONGLV,YINCI,PSEKEYIYUXIANPAIDINGGONGLV。FENLEITEZHENGBIAOXIANWEIZAISHURUDUANBEIPDJIQUDEHENGDINGDIANLIU。BIAO1SHICHUFENLEIJIQIHENGDINGDIANLIUTEZHENG。

PDJIANCE

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PDTEZHENGZUKANGKEGAODA1.9VDIANYAPIANYI(TONGCHANGYOULIANGGEERJIGUANCHUANLIANYINQIDE)HE10mADIANLIUPIANYI(TONGCHANGYOUPDLOUDIANYINQI)。ZHEIXIEXIANGSHIPSEDIANZUCELIANGBIANFUZA,ZHEISHIYOUYUZAIDANV-IDIANCELIANGZHONGJIANGBUKAOLVZHEIXIEWUCHA。YINCI,XUYAOPSEZHISHAOQULIANGGEBUTONGV-IDIAN(ZAIPDZHONGZHEILIANGDIANZHISHAOXIANGGE1V)。RANHOU,JISUANLIANGGEDIANZHIJIANDECHAYIQIUDEZHENZHENGDIANZUXIELV,JIANQUDIANYAHEDIANLIUPIANYI。


PD分类

基于PoE电源的解决方案_dvvt发动机是什么意思


    一旦PSE已成功检测PD,则PSE可任意询问PD将汲取多少功率。若PSE具有足够大的电源能同时提供满载功率到所有端口,则可省略分类步骤。一般情况下,PSE具有有限可用的功率,它必须跟踪所连接的PD数和它们的功率分类电平,当达到功率预算时,必须停止接受PD。

ZAIPDSHANGJIASHANG15V~20VDIANYABIANKEJIANCHAFENLEITEZHENG。ZAI15VHE20VFENLEITEZHENGFANWEI,PDXINGWEIBIXUXIANGHENGLIUYUAN,PSECELIANGCIDIANLIULAIQUEDINGPD(JIANBIAO1)。TU3SHICHUXITONGCONGJIANCEMOSHIDAOFENLEIMOSHIZHUANHUANDEDIANLIUXINGWEI。

基于PoE电源的解决方案_dvvt发动机是什么意思

QIEDUANJIANCE

ZHENGRUPSECONGBUFASONGGONGLVDAOBUYAOQIUTADEZHUANGZHIZHONG,PSEZAIYONGDIANZHUANGZHIWEICHARUQIANBIXUBUKAIZHEDIANYUAN,ZHEISHIYINWEIYONGDIANDIANLANKEYILIJICHARUPCHUOXISHANGDIANNAO。ZHEIXUYAOPSEJIANCECIDONGZUOBINGBAOZHENGDIANYUANBUJIADAO“FEIYICONG”DEPD(JIPC,XISHANGDIANNAOHUOQITACHUANTONGEthernetZHUANGZHI)SHANG。802.3afBIAOZHUNWEIPSEGANCEWEICHARUPDGUIDINGLELIANGZHONGFANGFA:DCQIEDUANHEACQIEDUAN,YUNXUXUANZEZUISHIHESUOYONGXITONGDESHIXIANFANGFA。

DCQIEDUAN

DCQIEDUANGENJULIUJINGPSEDAOPDDEDCDIANLIULIANGLAIQUEDING1GEPDDECUNZAI。DANGDIANLIUZAIJIDINGSHIJIANtDIS(300ms~400ms)NEIBAOCHIDIYUFAZHIIMIN(5mAHE10mAZHIJIAN),ZEPSEJIADINGPDBUCUNZAIBINGGUANDUANDIANYUAN。

ACQIEDUAN

SHIXIANACQIEDUANDEPSECELIANGEthernetKOUDEACZUKANG。DANGMEIYOUZHUANGZHILIANJIEDAOPOESHI,KOUYINGGAISHIGAOZUKANG(JIZHAOOUMU)。RANER,DANGLIANJIEPDSHI,KOUZUKANGJIANGXIAOYU 26.25KΩ。SUOJIADIANYA(VAC)HECELIANGSUODEDAODEDIANLIU(IAC)QUEDINGKOUZUKANG(ZPORT):ZPORT=VAC/IAC,TU4ZHONGDELTC4259ASHIXIAN ACHEDCQIEDUAN。

基于PoE电源的解决方案_dvvt发动机是什么意思

JIEYU

PSE具有检测程序告知它有没有真正的PD连接到端口;分类程序告知它PD将汲取多少功率,因此,可相应地指定它的电源;电源管理特征告知它PD是否仍然存在和工作正常。而PD具有与PSE直接通信的方式、希望多少功率和希望保持的电流。所有这些都不影响任何方式的数据流。因此,把有效PSE和PD器件组合完全没有数据通信硬件,这对于某些应用节省很大的费用,最重要的是检测协议可使传统Ethernet装置损坏的机会最小,因此,维护向后兼容。

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