{"id":25181,"date":"2021-01-22T10:52:51","date_gmt":"2021-01-22T02:52:51","guid":{"rendered":"http:\/\/www.betop-tech.com.tw\/wp1\/?p=25181"},"modified":"2021-07-23T10:01:56","modified_gmt":"2021-07-23T02:01:56","slug":"poe-ieee-802-3bt","status":"publish","type":"post","link":"https:\/\/www.betop-tech.com.tw\/wp1\/category-tech\/poe-ieee-802-3bt\/","title":{"rendered":"PoE IEEE 802.3bt"},"content":{"rendered":"\n

IEEE 802.3bt\u7c21\u4ecb\uff1a<\/strong><\/p>\n\n\n\n

\u4e00\u500bPoE (Power over Ethernet) \u7cfb\u7d71\u5305\u542b\u4e86PSE (Power Source Equipment)\uff0c\u4f9b\u96fb\u8a2d\u5099\uff1b\u4ee5\u53caPD(Powered Device)\uff0c\u53d7\u96fb\u8a2d\u5099\u3002PoE\u70baPLC (Power Line Communication)\u7684\u4e00\u7a2e\uff0c\u76ee\u7684\u662f\u5c07\u7db2\u8def\u8cc7\u6599\u8207\u96fb\u529b\u6574\u5408\uff0c\u5728\u50c5\u9700\u8981\u4f7f\u7528\u7db2\u8def\u7dda\uff0c\u5373\u53ef\u8b93\u53d7\u96fb\u7aef\u6b63\u5e38\u904b\u4f5c\u548c\u9023\u7db2\u3002\u5927\u5927\u7bc0\u7701\u4f48\u7dda\u4e0a\u7684\u56f0\u64fe\u3002<\/p>\n\n\n\n

\u5982\u5716\u6240\u793a\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u975ePoE\u8a2d\u5099\uff0cIP Phone\u9700\u8981\u63a5\u96fb\u7dda\uff0c\u8d8a\u591a\u8a2d\u5099\u9700\u8981\u8d8a\u591a\u96fb\u7dda<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

PoE\u8a2d\u5099\uff0cIP Phone\u4e0d\u9700\u8981\u63a5\u96fb\u7dda\uff0c\u4f48\u7dda\u8b8a\u5f97\u7c21\u55ae<\/p>\n\n\n\n

PoE\u6a19\u6e96\u53ef\u8ffd\u6eaf\u52302003\u5e74\u7684IEEE 802.3af\uff0c\u7576\u6642PSE\u6700\u5927\u7684\u8f38\u51fa\u529f\u7387\u70ba15.4W\uff0c\u5176\u4f5c\u7528\u5728VoIP Phone\u6216\u4e00\u4e9b\u529f\u8017\u8f03\u4f4e\u7684\u61c9\u7528\u4e0a\u662f\u975e\u5e38\u8db3\u5920\u7684\u3002\u4f46\u52302021\u5e74\uff0c\u8d8a\u4f86\u8d8a\u591a\u8a2d\u5099\u9700\u8981\u66f4\u9ad8\u529f\u7387\u7684\u61c9\u7528\uff0c\u4f8b\u5982\u5f71\u50cf\u96fb\u8a71\u3001\u667a\u6167\u7167\u660e\u3001\u751a\u81f3IPC\uff0c\u70ba\u4e86\u6eff\u8db3\u5404\u5927\u529f\u7387\u9700\u6c42\uff0c\u76ee\u524d\u7684IEEE 802.3bt\u5df2\u7d93\u80fd\u63d0\u4f9b\u523090W\u8f38\u51fa\u3002\u5404\u500b\u6a19\u6e96\u7684\u529f\u7387\u5982\u4e0b\u8868\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u76f8\u6bd4\u65bcIEEE 802.3af\u548cIEEE 802.3at\uff0cIEEE 802.3bt\u591a\u4e86\u5e7e\u500b\u65b0\u7279\u5fb5\uff0c\u4e0b\u9762\u6703\u91dd\u5c0d\u9019\u56db\u9ede\u4f86\u4ecb\u7d39<\/p>\n\n\n\n

  1. \u4f7f\u75284-Pair\u50b3\u8f38\u96fb\u529b<\/li>
  2. \u652f\u63f4\u55aePD\u6216\u652f\u63f4\u96d9PDs<\/li>
  3. Autoclass<\/li>
  4. \u66f4\u4f4e\u7684MPS<\/li><\/ol>\n\n\n\n

    IEEE 802.3bt 4-Pair\u50b3\u8f38\uff1a<\/strong><\/p>\n\n\n\n

    \u65e9\u671f\u6a19\u6e96\u7684PoE\u70ba\u4f7f\u7528\u7db2\u8def\u7dda\u9001\u96fb\uff0c\u5b9a\u7fa9\u5169\u7a2e\u65b9\u6cd5\uff1aEnd-Span\u6216\u7a31mode A\u8207Mid-Span\u6216\u7a31mode B\u3002\u572810\/100M\u901f\u5ea6\u4e0b\uff0c\u8a0a\u865f\u53ea\u7528\u4e861, 2, 3 \u548c6\u90192\u5c0d\u7d5e\u7dda\uff0c\u800cEnd-Span\u5373\u662f\u628a\u96fb\u52a0\u8f09\u5728\u540c\u6a23\u7684\u8a0a\u865f\u7dda\u4e0a\uff0c\u4f7f\u8a0a\u865f\u8207\u96fb\u529b\u8d70\u540c\u6a23\u7dda\u8def\uff1bMid-Span\u537b\u662f\u4f7f\u7528\u52304, 5, 7 \u548c8\uff0c\u53e62\u5c0d\u7d5e\u7dda\uff0c\u8b93\u96fb\u529b\u8207\u8a0a\u865f\u662f\u5206\u96e2\u7684\u3002\u5347\u7d1a\u52301G\u7684\u50b3\u8f38\u5f8c\uff0c\u8a0a\u865f\u5df2\u7d93\u4f7f\u75284\u5c0d\u7d5e\u7dda\uff0c\u6240\u4ee5\u5c0dEnd-Span\u6216Mid-Span\u4f86\u8aaa\uff0c\u7686\u662f\u96fb\u529b\u8207\u8a0a\u865f\u4e00\u8d77\u50b3\u9001\u3002<\/p>\n\n\n\n

    \u7121\u8ad6\u662fEnd-Span\u6216Mid-Span\uff0c\u50b3\u8f38\u4f4e\u529f\u7387\u7684\u96fb\u529b\u4f7f\u75282\u5c0d\u7d5e\u7dda\u662f\u8db3\u5920\u7684\uff0c\u53ef\u82e5\u8981\u5c07IEEE 802.3bt\u7684\u5927\u529f\u7387\u5728\u540c\u6a23\u7684\u7dda\u6750\u4e0a\u50b3\u9001\uff0c\u5c31\u6703\u56e0\u70ba\u96fb\u6d41\u8b8a\u5927\uff0c\u800c\u5fc5\u9808\u8003\u91cf\u7dda\u6750\u7684\u963b\u6297\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u5c31\u767c\u5c554-pair\u50b3\u8f38\u3002\u7c21\u55ae\u7684\u4f86\u8aaa2\u5c0d\u7d5e\u7dda\u5982\u679c\u80fd\u50b3\u900145W\uff0c\u52474\u5c0d\u7d5e\u7dda\u5c31\u53ef\u4ee5\u50b3\u9001\u81f390W\u7684\u96fb\u529b\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    Number of Pairs<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    2-Pair Topology (End-Span)<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    4-Pair Topology<\/p>\n\n\n\n

    IEEE 802.3bt <\/strong>\u96d9<\/strong>PDs<\/strong>\uff1a<\/strong><\/strong><\/p>\n\n\n\n

    \u4e00\u500b\u6a19\u6e96PoE\u5728PSE\u4f9b\u96fb\u7d66PD\u7aef\u6642\uff0c\u9700\u8981\u5148\u505a\u6e9d\u901a(Signature)\uff0c\u7576\u78ba\u5b9a\u662fPD\u8a2d\u5099\u4e14PD\u662f\u4ec0\u9ebc\u7b49\u7d1a\u5f8c\uff0cPSE\u624d\u6703\u8f38\u51fa\u96fb\u529b\u7d66PD\u3002\u5728IEEE 802.3bt\u4e2d\uff0cPSE\u548cPD\u7684Signature\u6709\u5169\u7a2e<\/p>\n\n\n\n

    Single-Signature PD<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u5169\u7d44\u7dda\u5c0d\u5171\u7528\u4e00\u500bPD<\/p>\n\n\n\n

    Dual-Signature PD<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    \u5169\u7d44\u7dda\u5c0d\u5206\u5225\u4f7f\u7528\u5404\u81eaPD<\/p>\n\n\n\n

    Single-Signature PD\u662f4\u5c0d\u7d5e\u7dda\u5171\u7528\u4e00\u500bPD\uff0cPD\u53ef\u6536\u5230\u7684\u6700\u5927\u529f\u7387\uff0c\u5247\u662f\u770bClass\u6240\u5b9a\u7fa9\u597d\u7684\u6578\u503c\uff1bDual-Signature PD\u5247\u70ba2\u500b2\u5c0d\u7d5e\u7dda\u5206\u5225\u63a5\u52301\u500bPD\uff0c\u6bcf\u4e00\u500bPD\u90fd\u88ab\u5206\u914d\u5230\u76f8\u5c0d\u7684Power\u3002<\/p>\n\n\n\n

    \u8209\u4f8b\u4f86\u8aaa\uff0cSingle-Signature PD\uff0cPD\u8a2d\u5b9a\u70baClass 4\uff0c\u5247PD\u6536\u5230\u6700\u5927\u529f\u7387\u5247\u662f25.5W\uff1b\u800c\u5728Dual-Signature PD\u4e0b\uff0c\u8a2d\u5b9aPDs\u70baClass 4 & Class 5\uff0c\u5247PDs\u5206\u5225\u6703\u6536\u5230\u6700\u5927\u529f\u7387\u70ba25.5W\u548c40W\u3002<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    Classification Table<\/p>\n\n\n\n

    \u5c0dDual-Signature PD\u7684\u597d\u8655\u662f\uff0c\u53ef\u4ee5\u9694\u96e2\u5169\u7d44\u96fb\u6e90\u7d66\u4e0d\u540c\u8a2d\u5099\u4f7f\u7528\uff0c\u7576\u7136\u4f34\u96a8\u7684\u7f3a\u9ede\u662f\u96fb\u8def\u6210\u672c\u4e5f\u6703\u56e0\u6b64\u63d0\u5347\u3002<\/p>\n\n\n\n

    IEEE 802.3bt Autoclass<\/strong><\/p>\n\n\n\n

    \u65e9\u671f\u7684PSE\u4fdd\u7559\u7d66PD\u7684\u529f\u7387\u662f\u6046\u5b9a\u7684\uff0c\u800c\u4e0d\u7ba1\u4ed6\u5be6\u969b\u8981\u591a\u5c11\u3002\u5728IEEE 802.3 bt\u53ef\u4ee5\u9078\u64c7\u6027\u7684\u63a1\u7528\u81ea\u52d5\u5206\u985e\uff0c\u7a31\u70baAutoclass\u3002\u555f\u7528Autoclass\u5f8c\uff0cPD\u5728\u4e00\u4e0a\u96fb\u6642\u6703\u6d88\u8017\u5be6\u969b\u6700\u5927\u529f\u7387\uff0c\u6b64\u884c\u70ba\u5141\u8a31PSE\u6e2c\u91cfPD\u5c07\u6d88\u8017\u7684\u5be6\u969b\u529f\u7387\u4e26\u76f8\u61c9\u7684\u4f5c\u529f\u7387\u5206\u914d\u3002<\/p>\n\n\n\n

    \u8209\u4f8b\u4f86\u8aaa\uff0c\u67d0\u4e9b\u5de5\u696d\u4ea4\u63db\u6a5f\u865f\u7a31\u662f\u652f\u63f44 Ports IEEE 802.3bt 90W\uff0c\u4f46\u7e3d\u529f\u7387\u6700\u9ad8\u70ba240W (\u975e90W x 4 ports = 360W)\uff0c\u9019\u6642\u5019\u555f\u52d5Autoclass\uff0c\u7576PD\u5176\u4e2d\u76842 ports\u5403\u6389PSE 80W (\u5171160W)\u7684\u96fb\uff0c\u5176\u9918\u76842 ports\u53ef\u4ee5\u5f9ePSE\u5f97\u5230\u5269\u9918240W-160W\u517180W\u7684\u96fb\u6e90\u3002\u6c92\u555f\u52d5Autoclass\u529f\u80fd\uff0cPSE\u6703\u9810\u8a2d180W\u7d66\u524d2 ports\uff0c\u5269\u991860W\u7d66\u5f8c2 ports\u3002<\/p>\n\n\n\n

    IEEE 802.3bt <\/strong>\u4f4e<\/strong>MPS (Maintain Power Signature)<\/strong><\/p>\n\n\n\n

    \u5728IEEE 802.3af\u548cat \u6a19\u6e96\u4e0a\uff0cPD\u5728Standby Mode\u4e0b\uff0c\u6bcf23% (75ms\/325ms)\u7684\u5de5\u4f5c\u9031\u671f\u6703\u5438\u6536\u4e00\u500b10mA\u7684\u96fb\u6d41\uff0c\u529f\u8017\u7d0423%*10mA*57V=131mW\u3002\u5982\u679c\u518d\u4e58\u4e0aPD\u7684\u6578\u91cf\uff0c\u6703\u4f7fStandby Mode\u4e0b\u9084\u9700\u8981\u8017\u8cbb\u5927\u91cf\u96fb\u6e90\u3002<\/p>\n\n\n\n

    IEEE 802.3bt\u63d0\u4f9b\u4e00\u7a2e\u8f03\u4f4e\u7684MPS\uff0c\u6bcf2.2%(7ms\/310ms)\u7684\u5de5\u4f5c\u9031\u671f\u6703\u5438\u6536\u4e00\u500b10mA\/20mA\u7684\u96fb\u6d41\uff0c\u529f\u8017\u7d042.2%*20mA*57V=25mW\uff0c\u56e0\u800c\u5927\u91cf\u7e2e\u5c0f\u5f85\u6a5f\u6642\u7684\u529f\u8017\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    IEEE 802.3bt\u7c21\u4ecb\uff1a \u4e00\u500bPoE (Power over Ethernet) \u7cfb\u7d71\u5305\u542b\u4e86PSE (P …<\/p>\n

    PoE IEEE 802.3bt<\/span> Read More »<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[34],"tags":[55,56,57],"_links":{"self":[{"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/posts\/25181"}],"collection":[{"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/comments?post=25181"}],"version-history":[{"count":4,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/posts\/25181\/revisions"}],"predecessor-version":[{"id":25961,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/posts\/25181\/revisions\/25961"}],"wp:attachment":[{"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/media?parent=25181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/categories?post=25181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.betop-tech.com.tw\/wp1\/wp-json\/wp\/v2\/tags?post=25181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}