{"id":100138,"date":"2024-12-30T10:41:38","date_gmt":"2024-12-30T02:41:38","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=100138"},"modified":"2024-12-30T10:41:42","modified_gmt":"2024-12-30T02:41:42","slug":"ldsyscrds","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/100138.html","title":{"rendered":"LoRa\u7684sf11\u4e0esf12\u51fa\u5165\u591a\u5c11?"},"content":{"rendered":"\n<p>\u3000\u3000\u5728<strong> LoRa \u901a\u4fe1<\/strong>\u4e2d\uff0c<strong>SF\uff08\u6269\u9891\u56e0\u5b50\uff0cSpreading Factor\uff09<\/strong>\u00a0\u662f\u4e00\u4e2a\u5173\u952e\u53c2\u6570\uff0c\u5b83\u51b3\u5b9a\u4e86\u6570\u636e\u4f20\u8f93\u901f\u7387\u3001\u4fe1\u53f7\u8986\u76d6\u8303\u56f4\u4ee5\u53ca\u94fe\u8def\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002SF \u7684\u53d6\u503c\u8303\u56f4\u901a\u5e38\u4e3a\u00a0<strong>SF7 \u81f3 SF12<\/strong>\uff0cSF \u503c\u8d8a\u5927\uff0c\u4fe1\u53f7\u4f20\u64ad\u5f97\u8d8a\u8fdc\uff0c\u4f46\u4f20\u8f93\u901f\u7387\u8d8a\u4f4e\u3002<strong>SF11<\/strong>\u548c<strong>SF12<\/strong>\u7684\u5dee\u5f02\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u4f20\u8f93\u65f6\u95f4\uff08Time on Air, ToA\uff09<\/strong>&nbsp;\uff1aSF12\u7684\u4f20\u8f93\u65f6\u95f4\u6bd4SF11\u66f4\u957f\u3002\u8fd9\u662f\u56e0\u4e3aSF\u503c\u8d8a\u9ad8\uff0c\u6bcf\u4e2a\u4fe1\u606f\u4f4d\u6240\u9700\u7684\u7b26\u53f7\u6570\u91cf\u8d8a\u591a\uff0c\u5bfc\u81f4\u4f20\u8f93\u65f6\u95f4\u589e\u52a0\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u901a\u4fe1\u8ddd\u79bb<\/strong>\uff1aSF12\u7684\u7406\u8bba\u901a\u4fe1\u8ddd\u79bb\u6bd4SF11\u66f4\u8fdc\u3002\u7406\u60f3\u6761\u4ef6\u4e0b\uff0cSF12\u7684\u4f20\u8f93\u8ddd\u79bb\u53ef\u8fbe20-25\u516c\u91cc\uff0c\u800cSF11\u7684\u7406\u60f3\u4f20\u8f93\u8ddd\u79bb\u4e3a15-20\u516c\u91cc\u3002\u5728\u57ce\u5e02\u73af\u5883\u4e2d\uff0cSF12\u7684\u5b9e\u9645\u4f20\u8f93\u8ddd\u79bb\u901a\u5e38\u4e3a3-6\u516c\u91cc\uff0c\u800cSF11\u4e3a2-5\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u6570\u636e\u901f\u7387<\/strong>\uff1aSF12\u7684\u6570\u636e\u901f\u7387\u6bd4SF11\u66f4\u4f4e\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u4f7f\u7528\u5178\u578bLoRa\u5e26\u5bbd(125 kHz)\u65f6\uff0cSF11\u7684\u6570\u636e\u901f\u7387\u4e3a\u7ea60.98 kbps\uff0c\u800cSF12\u7684\u6570\u636e\u901f\u7387\u4e3a\u7ea60.54 kbps\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u529f\u8017<\/strong>\uff1a\u7531\u4e8eSF12\u7684\u4f20\u8f93\u65f6\u95f4\u66f4\u957f\uff0c\u5176\u529f\u8017\u4e5f\u66f4\u9ad8\u3002\u5728\u76f8\u540c\u6570\u636e\u91cf\u7684\u4f20\u8f93\u60c5\u51b5\u4e0b\uff0cSF12\u7684\u529f\u8017\u53ef\u80fd\u662fSF11\u76841.5\u500d\u751a\u81f3\u66f4\u9ad8\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u9002\u7528\u573a\u666f<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000SF11\uff1a\u9002\u5408\u8ddd\u79bb\u8f83\u8fdc\u4f46\u4ecd\u7136\u9700\u8981\u4e00\u5b9a\u6570\u636e\u901f\u7387\u7684\u573a\u666f\u3002<\/p>\n\n\n\n<p>\u3000\u3000SF12\uff1a\u9002\u7528\u4e8e\u6781\u7aef\u8fdc\u8ddd\u79bb\u6216\u975e\u5e38\u5608\u6742\u7684\u73af\u5883\uff0c\u4f46\u5e94\u5c3d\u91cf\u907f\u514d\u957f\u671f\u4f7f\u7528\uff0c\u56e0\u4e3a\u8fd9\u4f1a\u663e\u8457\u964d\u4f4e\u7f51\u7edc\u5bb9\u91cf\u548c\u6548\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u9650\u5236\u4e0e\u4f18\u5316<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5728LoRaWAN\u534f\u8bae\u4e2d\uff0c\u90e8\u5206\u5730\u533a\u6216\u7f51\u7edc\u53ef\u80fd\u9650\u5236\u4f7f\u7528SF12.\u4ee5\u4fdd\u8bc1\u7f51\u7edc\u5bb9\u91cf\u548c\u516c\u5e73\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u5e94\u6ce8\u610f\u4fe1\u9053\u5360\u7528\u8fc7\u9ad8\u53ef\u80fd\u5f71\u54cd\u5176\u4ed6\u8282\u70b9\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u53ef\u4ee5\u901a\u8fc7ADR(Adaptive Data Rate)\u529f\u80fd\u52a8\u6001\u8c03\u6574SF\u503c\uff0c\u4ee5\u5728\u8986\u76d6\u8303\u56f4\u548c\u6570\u636e\u901f\u7387\u4e4b\u95f4\u53d6\u5f97\u5e73\u8861\u3002<\/p>\n\n\n\n<p>\u3000\u3000SF12\u76f8\u6bd4SF11\u66f4\u9002\u5408\u6781\u9650\u8fdc\u8ddd\u79bb\u901a\u4fe1\uff0c\u4f46\u5176\u4f4e\u6570\u636e\u901f\u7387\u548c\u9ad8\u529f\u8017\u9650\u5236\u4e86\u5176\u5728\u5e38\u89c4\u573a\u666f\u4e2d\u7684\u5e94\u7528\u3002\u5728\u5b9e\u9645\u9009\u62e9\u65f6\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u5408\u7406\u914d\u7f6eSF\u503c\uff0c\u4f18\u5148\u4f7f\u7528SF7\u81f3SF10.\u4ec5\u5728\u6781\u8fdc\u8ddd\u79bb\u6216\u7279\u6b8a\u73af\u5883\u4e0b\u624d\u8003\u8651\u4f7f\u7528SF11\u6216SF12.\u5e76\u7ed3\u5408ADR\u529f\u80fd\u4f18\u5316\u7f51\u7edc\u6027\u80fd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 \u5728LoRa\u901a\u4fe1\u4e2d\uff0cSF11\u548cSF12\u7684\u5177\u4f53\u529f\u8017\u5bf9\u6bd4<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u901a\u4fe1\u4e2d\uff0cSF11\u548cSF12\u7684\u5177\u4f53\u529f\u8017\u5bf9\u6bd4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>SF12\u7684\u529f\u8017<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u6839\u636e\uff0c\u4f7f\u7528SF12\u65f6\uff0c\u5355\u6b21\u53d1\u9001\u7684\u529f\u8017\u4e3a30uAh\uff0c\u53d1\u9001\u65f6\u957f\u7ea61.4\u79d2\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6839\u636e\uff0cSF12\u7684\u4f20\u8f93\u65f6\u95f4\u662fSF7\u768425\u500d\uff0c\u80fd\u91cf\u6d88\u8017\u4e5f\u76f8\u5e94\u589e\u52a025\u500d\u3002\u5728\u7279\u5b9a\u6d4b\u91cf\u4e2d\uff0cSF12\u7684\u5168\u6d3b\u52a8\u5468\u671f\u80fd\u91cf\u6d88\u8017\u662fSF7\u768420\u500d\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>SF11\u7684\u529f\u8017<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u6839\u636e\uff0c\u4f7f\u7528SF11\u65f6\uff0c\u5355\u6b21\u53d1\u9001\u7684\u603b\u80fd\u8017\u53ef\u4ee5\u9ad8\u8fbe429 mJ\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4ece\u4e0a\u8ff0\u4fe1\u606f\u53ef\u4ee5\u770b\u51fa\uff0cSF12\u7684\u529f\u8017\u660e\u663e\u9ad8\u4e8eSF11.\u5177\u4f53\u6765\u8bf4\uff0cSF12\u7684\u529f\u8017\u5927\u7ea6\u662fSF11\u768410\u500d\u4ee5\u4e0a\u3002\u8fd9\u4e3b\u8981\u662f\u56e0\u4e3aSF12\u7684\u4f20\u8f93\u65f6\u95f4\u66f4\u957f\uff0c\u5bfc\u81f4\u80fd\u91cf\u6d88\u8017\u66f4\u5927\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u4e0d\u540c\u73af\u5883\u6761\u4ef6\u4e0bLoRa\u7684SF11\u548cSF12\u7684\u5b9e\u9645\u901a\u4fe1\u8ddd\u79bb\u5dee\u5f02<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u4e0d\u540c\u73af\u5883\u6761\u4ef6\u4e0b\uff0cLoRa\u7684SF11\u548cSF12\u7684\u5b9e\u9645\u901a\u4fe1\u8ddd\u79bb\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u5206\u6790\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5ba4\u5185\u73af\u5883<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u6700\u5927\u901a\u4fe1\u8303\u56f4\u4e3a74\u7c73\uff0c\u6700\u9ad8\u6570\u636e\u901f\u7387\u4e3a0.595 kbit\/s\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8303\u56f4\u53ef\u4ee5\u8fbe\u5230\u8d85\u8fc72\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u57ce\u5e02\u73af\u5883<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u7ea6\u4e3a5\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u53ef\u4ee5\u8fbe\u5230\u8d85\u8fc720\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u519c\u6751\u548c\u6d77\u5cb8\u533a\u57df<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u53ef\u8fbe20\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u540c\u6837\u53ef\u4ee5\u8fbe\u5230\u8d85\u8fc720\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5730\u4e0b\u73af\u5883<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u68ee\u6797\u73af\u5883\u4e2d\uff0c\u5f53\u53d1\u5c04\u5668\u4f4d\u4e8e1\u7c73\u6df1\u5904\u65f6\uff0c\u4f7f\u7528SF12\u7684\u901a\u4fe1\u8d28\u91cf\u8d85\u8fc790%\uff0c\u76f4\u5230100\u7c73\u7684\u8ddd\u79bb;\u4f46\u5f53\u6df1\u5ea6\u589e\u52a0\u52301.5\u7c73\u65f6\uff0c\u901a\u4fe1\u8d28\u91cf\u663e\u8457\u4e0b\u964d\uff0c\u65e0\u6cd5\u8fbe\u523020\u7c73\u7684\u8ddd\u79bb\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8d28\u91cf\u5728\u66f4\u6df1\u5c42\u6b21\u4e0b\u4ecd\u7136\u4fdd\u6301\u8f83\u9ad8\u6c34\u5e73\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u6781\u5730\u5730\u533a<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u901a\u8fc7\u5b89\u88c5\u5b9a\u5411\u5929\u7ebf\u53ef\u5b9e\u73b0\u6700\u592730\u516c\u91cc\u7684\u8303\u56f4\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u540c\u6837\u53ef\u4ee5\u8fbe\u5230\u6570\u767e\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u590d\u6742\u5730\u5f62\uff08\u5982\u5c71\u5730\uff09<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF12\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u4e0e\u8def\u5f84\u4e0a\u7684\u529f\u7387\u8870\u51cf\u6210\u6b63\u6bd4\uff0c\u9884\u8ba1\u6570\u636e\u4f20\u8f93\u8ddd\u79bb\u53ef\u8fbe\u6570\u767e\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528SF11\u65f6\uff0c\u901a\u4fe1\u8ddd\u79bb\u540c\u6837\u53ef\u4ee5\u8fbe\u5230\u6570\u767e\u516c\u91cc\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u603b\u7ed3\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>SF12<\/strong>\uff1a\u5728\u5927\u591a\u6570\u73af\u5883\u4e2d\uff0cSF12\u7684\u901a\u4fe1\u8ddd\u79bb\u8f83\u77ed\uff0c\u5c24\u5176\u662f\u5728\u5ba4\u5185\u548c\u6709\u969c\u788d\u7269\u7684\u57ce\u5e02\u73af\u5883\u4e2d\u3002\u7136\u800c\uff0c\u5728\u5f00\u9614\u7684\u519c\u6751\u3001\u6d77\u5cb8\u548c\u6781\u5730\u5730\u533a\uff0cSF12\u7684\u901a\u4fe1\u8ddd\u79bb\u53ef\u4ee5\u8fbe\u5230\u8f83\u8fdc\u7684\u8ddd\u79bb\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>SF11<\/strong>\uff1aSF11\u5728\u6240\u6709\u73af\u5883\u4e2d\u90fd\u80fd\u63d0\u4f9b\u66f4\u957f\u7684\u901a\u4fe1\u8ddd\u79bb\uff0c\u7279\u522b\u662f\u5728\u590d\u6742\u5730\u5f62\u548c\u6781\u5730\u5730\u533a\uff0c\u5176\u901a\u4fe1\u8ddd\u79bb\u663e\u8457\u4f18\u4e8eSF12.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 LoRaWAN\u534f\u8bae\u4e2d\u5bf9SF12\u4f7f\u7528\u7684\u9650\u5236<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRaWAN\u534f\u8bae\u4e2d\uff0c\u5bf9SF12\u4f7f\u7528\u7684\u9650\u5236\u5177\u4f53\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u6709\u6548\u8f7d\u8377\u957f\u5ea6\u9650\u5236<\/strong>\uff1a\u5728SF12\u6a21\u5f0f\u4e0b\uff0c\u5355\u4e2a\u6d88\u606f\u7684\u6700\u5927\u6709\u6548\u8f7d\u8377\u4e3a51\u5b57\u8282\u3002\u8fd9\u610f\u5473\u7740\u5728\u4f7f\u7528SF12\u65f6\uff0c\u8bbe\u5907\u53d1\u9001\u7684\u6570\u636e\u91cf\u53d7\u5230\u9650\u5236\uff0c\u4e0d\u80fd\u8d85\u8fc7\u8fd9\u4e2a\u957f\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u53d1\u5c04\u6301\u7eed\u65f6\u95f4\u9650\u5236<\/strong>\uff1a\u6839\u636e\u65b0\u89c4\u8303\uff0cLoRaWAN\u534f\u8bae\u8981\u6c42\u53d1\u5c04\u6301\u7eed\u65f6\u95f4\u4e0d\u8d85\u8fc71\u79d2\u3002\u5728SF12\u6a21\u5f0f\u4e0b\uff0c\u7531\u4e8e\u5176\u8f83\u957f\u7684\u7a7a\u4e2d\u65f6\u95f4(\u4f8b\u5982\uff0c1449.984ms)\uff0c\u8fd9\u4f7f\u5f97\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u65e0\u6cd5\u6ee1\u8db3\u8fd9\u4e00\u8981\u6c42\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u8c03\u6574\u6570\u636e\u5305\u7684\u5927\u5c0f\u6216\u4f7f\u7528\u5176\u4ed6\u6280\u672f(\u5982\u4e2d\u7ee7)\u6765\u964d\u4f4eSF12\u7684\u4f7f\u7528\u9891\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u63a5\u6536\u7075\u654f\u5ea6\u548c\u901a\u4fe1\u8ddd\u79bb<\/strong>\uff1aSF12\u6a21\u5f0f\u4e0b\u7684\u63a5\u6536\u7075\u654f\u5ea6\u8f83\u9ad8\uff0c\u7406\u8bba\u4e0a\u53ef\u4ee5\u5b9e\u73b0\u66f4\u8fdc\u7684\u901a\u4fe1\u8ddd\u79bb\u3002\u7136\u800c\uff0c\u8fd9\u4e5f\u610f\u5473\u7740\u5728\u9ad8\u5e72\u6270\u73af\u5883\u4e0b\uff0cSF12\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u53d7\u5230\u5f71\u54cd\uff0c\u56e0\u4e3a\u5176\u8f83\u9ad8\u7684\u7075\u654f\u5ea6\u4f7f\u5f97\u5b83\u66f4\u5bb9\u6613\u53d7\u5230\u5e72\u6270\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u529f\u8017\u548c\u5e26\u5bbd\u9650\u5236<\/strong>\uff1aSF12\u6a21\u5f0f\u4e0b\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u8f83\u4f4e\uff0c\u4f46\u5360\u7528\u7684\u5e26\u5bbd\u8f83\u5927(\u4f8b\u5982\uff0c125kHz\u5e26\u5bbd)\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u529f\u8017\u589e\u52a0\u3002\u6b64\u5916\uff0cSF12\u6a21\u5f0f\u4e0b\u7684\u6570\u636e\u4f20\u8f93\u65f6\u95f4\u8f83\u957f(\u4f8b\u5982\uff0c1449.984ms)\uff0c\u8fd9\u4f1a\u589e\u52a0\u8bbe\u5907\u7684\u7a7a\u95f2\u65f6\u95f4\uff0c\u4ece\u800c\u5f71\u54cd\u6574\u4f53\u7f51\u7edc\u7684\u6548\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u7f51\u7edc\u62e5\u585e\u548c\u6570\u636e\u5305\u4e22\u5931<\/strong>\uff1a\u7531\u4e8eSF12\u6a21\u5f0f\u4e0b\u7684\u6570\u636e\u4f20\u8f93\u65f6\u95f4\u8f83\u957f\uff0c\u7f51\u7edc\u4e2d\u7684\u5176\u4ed6\u8bbe\u5907\u53ef\u80fd\u4f1a\u56e0\u4e3a\u7b49\u5f85\u65f6\u95f4\u8fc7\u957f\u800c\u4ea7\u751f\u62e5\u585e\u3002\u6b64\u5916\uff0c\u5982\u679c\u5728\u4f7f\u7528SF12\u65f6\u6570\u636e\u5305\u4e22\u5931\uff0c\u7f51\u7edc\u53ef\u80fd\u4f1a\u81ea\u52a8\u5207\u6362\u5230\u8f83\u4f4e\u7684\u6269\u9891\u56e0\u5b50(\u5982SF7)\uff0c\u4ee5\u51cf\u5c11\u62e5\u585e\u548c\u63d0\u9ad8\u4f20\u8f93\u6210\u529f\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000LoRaWAN\u534f\u8bae\u4e2d\u5bf9SF12\u4f7f\u7528\u7684\u9650\u5236\u4e3b\u8981\u4f53\u73b0\u5728\u6709\u6548\u8f7d\u8377\u957f\u5ea6\u3001\u53d1\u5c04\u6301\u7eed\u65f6\u95f4\u3001\u63a5\u6536\u7075\u654f\u5ea6\u3001\u529f\u8017\u548c\u5e26\u5bbd\u4ee5\u53ca\u7f51\u7edc\u62e5\u585e\u7b49\u65b9\u9762\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 \u5982\u4f55\u901a\u8fc7ADR(Adaptive Data Rate)\u529f\u80fd\u52a8\u6001\u8c03\u6574LoRa\u7684SF\u503c?<\/h2>\n\n\n\n<p>\u3000\u3000\u901a\u8fc7ADR(Adaptive Data Rate)\u529f\u80fd\u52a8\u6001\u8c03\u6574LoRa\u7684SF\u503c\u4ee5\u4f18\u5316\u7f51\u7edc\u6027\u80fd\uff0c\u4e3b\u8981\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u4fe1\u9053\u8d28\u91cf\u76d1\u6d4b<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u7f51\u5173\u4f1a\u6301\u7eed\u76d1\u6d4b\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u7684\u4fe1\u566a\u6bd4(SNR)\u548c\u4fe1\u53f7\u5f3a\u5ea6(RSSI)\u3002\u5f53\u4fe1\u566a\u6bd4\u548c\u4fe1\u53f7\u5f3a\u5ea6\u8f83\u9ad8\u65f6\uff0c\u8bf4\u660e\u4fe1\u9053\u5b58\u5728\u201c\u4f59\u91cf\u201d\uff0c\u53ef\u4ee5\u589e\u5927\u901a\u4fe1\u901f\u7387;\u53cd\u4e4b\uff0c\u5219\u9700\u8981\u51cf\u5c0f\u901a\u4fe1\u901f\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u52a8\u6001\u8c03\u6574SF\u503c<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5f53\u7f51\u5173\u63a5\u6536\u5230\u6765\u81ea\u8282\u70b9\u7684\u6570\u636e\u65f6\uff0c\u5982\u679c\u4fe1\u566a\u6bd4\u548c\u4fe1\u53f7\u5f3a\u5ea6\u8f83\u5927\uff0c\u8282\u70b9\u5c06\u51cf\u5c0fSF\u503c\uff0c\u4ece\u800c\u589e\u5927\u901a\u4fe1\u901f\u7387\uff0c\u51cf\u5c0f\u4f20\u8f93\u8ddd\u79bb\u3002\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u5bf9\u5176\u4ed6\u7f51\u5173\u7684\u4fe1\u9053\u5360\u7528\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5982\u679c\u7f51\u5173\u6ca1\u6709\u63a5\u6536\u5230\u6570\u636e\uff0c\u6216\u8005\u8282\u70b9\u65e0\u6cd5\u6536\u5230\u6765\u81ea\u7f51\u5173\u7684\u5e94\u7b54\uff0c\u8282\u70b9\u5c06\u589e\u5927SF\u503c\uff0c\u4ece\u800c\u51cf\u5c0f\u901a\u4fe1\u901f\u7387\uff0c\u63d0\u9ad8\u4f20\u8f93\u8ddd\u79bb\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u7f51\u7edc\u670d\u52a1\u5668\u7684\u89d2\u8272<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u7f51\u7edc\u670d\u52a1\u5668(NS)\u4f5c\u4e3aLoRaWAN\u7f51\u7edc\u7684Manager\uff0c\u5728\u5f00\u542fADR\u529f\u80fd\u540e\uff0c\u53ef\u4ee5\u63a5\u7ba1\u5e76\u914d\u7f6e\u6bcf\u4e00\u4e2a\u7ec8\u7aef\u7684\u901a\u4fe1\u901f\u7387\u53ca\u53d1\u5c04\u529f\u7387\uff0c\u4f7f\u5f97\u7ec8\u7aef\u529f\u8017\u6700\u4f18\u4ee5\u53ca\u901a\u4fe1\u901f\u7387\u6700\u9ad8\u3002<\/p>\n\n\n\n<p>\u3000\u3000NS\u901a\u8fc7\u6536\u96c6\u591a\u4e2a\u7f51\u5173\u63a5\u6536\u5230\u7684\u8282\u70b9\u6570\u636e\uff0c\u8ba1\u7b97\u94fe\u8def\u8d28\u91cf\u6307\u6807\uff0c\u5e76\u6839\u636e\u8fd9\u4e9b\u6307\u6807\u52a8\u6001\u8c03\u6574\u6bcf\u4e2a\u8282\u70b9\u7684SF\u503c\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>ADR\u547d\u4ee4<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u7f51\u7edc\u670d\u52a1\u5668\u4f7f\u7528LinkADRReq\u547d\u4ee4\u8981\u6c42\u8282\u70b9\u8c03\u6574\u53d1\u9001\u4e0a\u884c\u94fe\u8def\u65f6\u7684\u6570\u636e\u901f\u7387\u3001\u53d1\u5c04\u529f\u7387\u3001\u53ef\u4f7f\u7528\u901a\u9053\u548c\u91cd\u53d1\u6b21\u6570\u3002\u8282\u70b9\u8bbe\u5907\u901a\u8fc7LinkADRAns\u547d\u4ee4\u54cd\u5e94\uff0c\u786e\u8ba4\u6240\u6709\u53c2\u6570\u8c03\u6574\u5b9e\u65bd\u5e76\u66f4\u65b0\u914d\u7f6e\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>ADR\u56de\u9000\u673a\u5236<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5f53\u8282\u70b9\u4e0a\u884c\u94fe\u8def\u6570\u636e\u4e22\u5931\u65f6\uff0c\u8282\u70b9\u8bbe\u5907\u4f1a\u81ea\u4e3b\u964d\u901f\uff0c\u76f4\u81f3\u6700\u4f4e\u503c\uff0c\u4ee5\u63d0\u9ad8\u94fe\u8def\u9884\u7b97\u3002\u8fd9\u4e00\u673a\u5236\u786e\u4fdd\u4e86\u5728\u4fe1\u9053\u6761\u4ef6\u6076\u5316\u65f6\uff0c\u8282\u70b9\u80fd\u591f\u7ee7\u7eed\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u4f18\u5316\u7f51\u7edc\u6027\u80fd<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000ADR\u673a\u5236\u901a\u8fc7\u52a8\u6001\u8c03\u6574\u6570\u636e\u901f\u7387\u548c\u53d1\u5c04\u529f\u7387\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\uff0c\u51cf\u5c11\u4e86\u6570\u636e\u5305\u4e22\u5931\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u901a\u8fc7\u4f18\u5316\u6570\u636e\u901f\u7387\u548c\u53d1\u5c04\u529f\u7387\uff0cADR\u6709\u52a9\u4e8e\u5ef6\u957f\u7ec8\u7aef\u8bbe\u5907\u7684\u7535\u6c60\u5bff\u547d\uff0c\u8fd9\u5bf9\u4e8e\u4f4e\u529f\u8017\u5e7f\u57df\u7f51(LPWAN)\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n\n\n\n<p>\u3000\u3000ADR\u673a\u5236\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u7f51\u7edc\u6761\u4ef6\u7075\u6d3b\u8c03\u6574\u6570\u636e\u4f20\u8f93\u7b56\u7565\uff0c\u4ece\u800c\u63d0\u9ad8\u7f51\u7edc\u7684\u6574\u4f53\u5bb9\u91cf\u548c\u8986\u76d6\u8303\u56f4\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5b9e\u65bd\u7ec6\u8282<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000ADR\u529f\u80fd\u901a\u8fc7\u4e0a\u4e0b\u94fe\u8def\u5e27\u4e2d\u7684ADR\u4f4d\u7f6e1\u901a\u77e5\u5bf9\u65b9\u652f\u6301ADR\u3002NS\u52a8\u6001\u7ba1\u7406\u7f51\u7edc\u5185\u8282\u70b9\u7684\u901a\u4fe1\u901f\u7387\u548c\u529f\u7387\u3002\u8282\u70b9\u4e0a\u884c\u94fe\u8def\u6570\u636e\u88ab\u591a\u4e2a\u7f51\u5173\u6536\u5230\uff0cNS\u8ba1\u7b97\u7ed3\u679c\u5e76\u786e\u5b9a\u6700\u4f73\u94fe\u8def\u9884\u7b97\u548c\u6570\u636e\u901f\u7387\u3002\u8282\u70b9\u4fa7\u7ef4\u62a4\u8ba1\u6570\u5668ADRACKCnt\uff0c\u5f53\u672a\u6536\u5230\u670d\u52a1\u5668\u54cd\u5e94\u65f6\uf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