{"id":99304,"date":"2024-11-17T18:55:23","date_gmt":"2024-11-17T10:55:23","guid":{"rendered":"\/\/www.viralrail.com\/?p=99304"},"modified":"2024-11-17T18:55:29","modified_gmt":"2024-11-17T10:55:29","slug":"lwsmzms","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/99304.html","title":{"rendered":"LoRa\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u201c\u795e\u201d?"},"content":{"rendered":"\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u4e4b\u6240\u4ee5\u88ab\u8ba4\u4e3a\u201c\u795e\u201d\uff0c\u4e3b\u8981\u5f52\u529f\u4e8e\u5176\u5728\u4f4e\u529f\u8017\u3001\u8fdc\u8ddd\u79bb\u901a\u4fe1\u548c\u6297\u5e72\u6270\u80fd\u529b\u65b9\u9762\u7684\u663e\u8457\u4f18\u52bf\u3002<\/strong><\/p>\n\n\n\n

\u3000\u3000LoRa<\/a>\u6280\u672f\u57fa\u4e8e\u6269\u9891\u8c03\u5236\u6280\u672f\uff0c\u7279\u522b\u662fChirp Spread Spectrum(CSS)\u8c03\u5236\u6280\u672f\uff0c\u8fd9\u79cd\u6280\u672f\u80fd\u591f\u5728\u76f8\u540c\u7684\u529f\u8017\u6761\u4ef6\u4e0b\u5b9e\u73b0\u6bd4\u4f20\u7edf\u65e0\u7ebf\u901a\u4fe1\u66f4\u8fdc\u7684\u4f20\u8f93\u8ddd\u79bb\u3002LoRa\u4fe1\u53f7\u901a\u8fc7\u7ebf\u6027\u8c03\u9891\u4fe1\u53f7(Chirp)\u8c03\u5236\uff0c\u4f7f\u5f97\u5176\u5728\u566a\u58f0\u73af\u5883\u4e0b\u4ecd\u80fd\u4fdd\u6301\u9ad8\u4f20\u8f93\u901f\u7387\uff0c\u6700\u5927\u53ef\u8fbe4096\u7801\u7247\/\u6bd4\u7279\uff0c\u8fdc\u8d85\u5176\u4ed6\u6280\u672f\u5982ZigBee\u768410-12\u7801\u7247\/\u6bd4\u7279\u3002\u8fd9\u79cd\u6269\u9891\u6280\u672f\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u8fd8\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u5bb9\u91cf\u8868\u73b0\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f<\/a>\u5177\u6709\u6781\u4f4e\u7684\u529f\u8017\u7279\u6027\uff0c\u975e\u5e38\u9002\u5408\u7269\u8054\u7f51\u8bbe\u5907\u4f7f\u7528\u3002\u7531\u4e8e\u6570\u636e\u5305\u5927\u5c0f\u5c0f\u4e14\u4f20\u8f93\u9891\u7387\u4f4e\uff0c\u8bbe\u5907\u529f\u8017\u6781\u4f4e\uff0c\u5373\u4f7f\u5728\u8bbe\u5907\u7761\u7720\u72b6\u6001\u4e0b\uff0c\u529f\u8017\u4e5f\u4ec5\u4e3a\u6beb\u74e6\u7ea7\uff0c\u4ece\u800c\u5ef6\u957f\u4e86\u7535\u6c60\u5bff\u547d\u3002\u6b64\u5916\uff0cLoRa\u6a21\u5757\u901a\u5e38\u91c7\u7528\u7535\u6c60\u4f9b\u7535\uff0c\u5e76\u4e14\u9700\u8981\u957f\u65f6\u95f4\u8fd0\u884c\uff0c\u8fd9\u5c31\u8981\u6c42\u5176\u5177\u5907\u6781\u4f4e\u7684\u529f\u8017\u7279\u6027\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f<\/a>\u8fd8\u5177\u6709\u5f3a\u5927\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u9ad8\u7a7f\u900f\u529b\u3002\u5b83\u80fd\u591f\u5728\u57ce\u5e02\u5bc6\u96c6\u73af\u5883\u4e2d\u4f20\u64ad3\u81f35\u516c\u91cc\uff0c\u5728\u519c\u6751\u5730\u533a\u751a\u81f3\u53ef\u4ee5\u8fbe\u523015\u516c\u91cc\u3002\u8fd9\u79cd\u5f3a\u7a7f\u900f\u529b\u4f7f\u5f97LoRa\u975e\u5e38\u9002\u5408\u5927\u89c4\u6a21\u4f4e\u6210\u672c\u7269\u8054\u7f51\u90e8\u7f72\uff0c\u5c24\u5176\u662f\u5728\u9700\u8981\u8986\u76d6\u5e7f\u6cdb\u533a\u57df\u7684\u5e94\u7528\u573a\u666f\u4e2d\u3002<\/p>\n\n\n\n

\u3000\u3000\u6b64\u5916\uff0cLoRa\u6280\u672f\u652f\u6301\u5927\u89c4\u6a21\u8fde\u63a5\uff0c\u80fd\u591f\u652f\u6301\u6570\u767e\u4e07\u6761\u6d88\u606f\u7684\u4f20\u8f93\uff0c\u5177\u4f53\u6570\u91cf\u53d6\u51b3\u4e8e\u5b89\u88c5\u7684\u7f51\u5173\u6570\u91cf\u3002\u8fd9\u79cd\u5927\u5bb9\u91cf\u7279\u6027\u4f7f\u5f97LoRa\u975e\u5e38\u9002\u5408\u7528\u4e8e\u9700\u8981\u8fde\u63a5\u5927\u91cf\u4f20\u611f\u5668\u6216\u8bbe\u5907\u7684\u7269\u8054\u7f51\u5e94\u7528\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa<\/a>\u6280\u672f\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u201c\u795e\u201d\u539f\u56e0\u5c31\u662f\u901a\u8fc7\u5176\u72ec\u7279\u7684\u6269\u9891\u901a\u4fe1\u6280\u672f\u3001\u4f4e\u529f\u8017\u8bbe\u8ba1\u548c\u5f3a\u5927\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u5728\u7269\u8054\u7f51\u9886\u57df\u4e2d\u5c55\u73b0\u4e86\u5353\u8d8a\u7684\u6027\u80fd\uff0c\u4f7f\u5176\u6210\u4e3a\u4e00\u79cd\u6781\u5177\u5438\u5f15\u529b\u7684\u65e0\u7ebf\u901a\u4fe1\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001 LoRa\u7684Chirp Spread Spectrum(CSS)\u8c03\u5236\u6280\u672f<\/h2>\n\n\n\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u4e2d\u7684Chirp Spread Spectrum(CSS)\u8c03\u5236\u6280\u672f\u662f\u4e00\u79cd\u6269\u9891\u8c03\u5236\u65b9\u6cd5\uff0c\u5176\u6838\u5fc3\u5728\u4e8e\u901a\u8fc7\u7ebf\u6027\u53d8\u5316\u7684\u9891\u7387\u4fe1\u53f7(\u5373\u5541\u557e\u4fe1\u53f7)\u6765\u6269\u5c55\u4fe1\u53f7\u7684\u9891\u8c31\u3002\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u4f7f\u5f97LoRa\u4fe1\u53f7\u80fd\u591f\u5728\u8f83\u5bbd\u7684\u9891\u7387\u8303\u56f4\u5185\u4f20\u8f93\u6570\u636e\uff0c\u4ece\u800c\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u548c\u901a\u4fe1\u8ddd\u79bb\u3002<\/p>\n\n\n\n

\u3000\u3000\u5728CSS\u8c03\u5236\u4e2d\uff0c\u4fe1\u53f7\u7531\u4e00\u7cfb\u5217\u9891\u7387\u968f\u65f6\u95f4\u7ebf\u6027\u589e\u52a0\u6216\u51cf\u5c11\u7684\u5541\u557e\u8109\u51b2(chirp)\u7ec4\u6210\u3002\u8fd9\u4e9b\u5541\u557e\u8109\u51b2\u662fLoRa\u4fe1\u53f7\u7684\u57fa\u672c\u6570\u636e\u7f16\u7801\u5355\u5143\uff0c\u6bcf\u4e2a\u5541\u557e\u8109\u51b2\u5360\u636e\u6574\u4e2a\u5e26\u5bbd\uff0c\u5e76\u4e14\u5728\u7b26\u53f7\u5185\u8fdb\u884c\u9891\u7387\u53d8\u5316\u4ee5\u7f16\u7801\u4fe1\u606f\u3002\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u5141\u8bb8LoRa\u4fe1\u53f7\u6709\u6548\u5229\u7528\u5168\u90e8\u5e26\u5bbd\uff0c\u514b\u670d\u4f20\u64ad\u8def\u5f84\u4e2d\u7684\u8870\u51cf\u548c\u5e72\u6270\uff0c\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u3000CSS\u8c03\u5236\u4f7f\u7528\u6269\u9891\u56e0\u5b50(Spreading Factor, SF)\u6765\u63a7\u5236\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u4e0e\u5bf9\u566a\u58f0\u7684\u62b5\u6297\u6027\u4e4b\u95f4\u7684\u5173\u7cfb\u3002SF\u503c\u8d8a\u9ad8\uff0c\u4fe1\u53f7\u7684\u566a\u58f0\u62b5\u6297\u6027\u8d8a\u5f3a\uff0c\u4f46\u6570\u636e\u4f20\u8f93\u901f\u5ea6\u8d8a\u6162;\u53cd\u4e4b\u4ea6\u7136\u3002\u901a\u5e38\uff0cSF\u503c\u57287\u523012\u4e4b\u95f4\uff0c\u5176\u4e2dSF=12\u63d0\u4f9b\u6700\u5927\u7684\u8ddd\u79bb\u548c\u6700\u4f4e\u7684\u6570\u636e\u4f20\u8f93\u901f\u5ea6\uff0c\u800cSF=7\u5219\u63d0\u4f9b\u6700\u5feb\u7684\u4f20\u8f93\u901f\u5ea6\u4f46\u8ddd\u79bb\u8f83\u77ed\u3002<\/p>\n\n\n\n

\u3000\u3000\u6b64\u5916\uff0cCSS\u8c03\u5236\u8fd8\u5177\u6709\u826f\u597d\u7684\u76f8\u5173\u6027\u7279\u6027\uff0c\u4f7f\u5f97\u4e0d\u540cSF\u503c\u7684\u4fe1\u53f7\u53ef\u4ee5\u540c\u65f6\u4f20\u8f93\u800c\u4e0d\u53d1\u751f\u51b2\u7a81\u3002\u8fd9\u4f7f\u5f97LoRa\u7cfb\u7edf\u80fd\u591f\u901a\u8fc7\u6539\u53d8SF\u503c\u6765\u5b9e\u73b0\u865a\u62df\u4fe1\u9053\u6216\u81ea\u9002\u5e94\u6570\u636e\u901f\u7387\u7b56\u7565\u3002\u4f8b\u5982\uff0c\u5728LoRaWAN\u534f\u8bae\u4e2d\uff0cSF\u503c\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u901f\u7387\u503c(DR)\u8fdb\u884c\u8c03\u6574\uff0c\u4ece\u800c\u9002\u5e94\u4e0d\u540c\u7684\u8fd0\u884c\u73af\u5883\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u4e2d\u7684CSS\u8c03\u5236\u901a\u8fc7\u4f7f\u7528\u5541\u557e\u4fe1\u53f7\u548c\u6269\u9891\u56e0\u5b50\u6765\u6269\u5c55\u4fe1\u53f7\u9891\u8c31\uff0c\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u548c\u901a\u4fe1\u8ddd\u79bb\u3002<\/p>\n\n\n\n

\"\u56fd\u4ea7lora\"
\u56fd\u4ea7lora<\/figcaption><\/figure>\n\n\n\n

\u3000\u3000\u4e8c\u3001 LoRa\u6280\u672f\u5728\u4f4e\u529f\u8017\u65b9\u9762\u7684\u5177\u4f53\u5b9e\u73b0\u673a\u5236<\/h2>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u5728\u4f4e\u529f\u8017\u65b9\u9762\u7684\u5b9e\u73b0\u673a\u5236\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u6765\u5b9e\u73b0\uff1a<\/p>\n\n\n\n

\u3000\u3000\u8c03\u5236\u6280\u672f<\/strong>\uff1aLoRa\u91c7\u7528\u6269\u9891\u8c03\u5236\u6280\u672f\uff0c\u901a\u8fc7\u9ad8\u6269\u9891\u56e0\u5b50(SF)\u83b7\u5f97\u8f83\u9ad8\u7684\u4fe1\u53f7\u589e\u76ca\uff0c\u4ece\u800c\u5728\u8f83\u4f4e\u7684\u53d1\u5c04\u529f\u7387\u4e0b\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002\u8fd9\u79cd\u6280\u672f\u4f7f\u5f97LoRa\u5728\u63a5\u6536\u7aef\u5177\u6709\u6781\u9ad8\u7684\u7075\u654f\u5ea6\uff0c\u4f8b\u5982\u53ef\u8fbe-148dBm\uff0c\u8fd9\u4f7f\u5f97\u5176\u4e0d\u9700\u8981\u5f88\u9ad8\u7684\u53d1\u5c04\u529f\u7387\u5c31\u80fd\u4fdd\u6301\u826f\u597d\u7684\u901a\u4fe1\u6548\u679c\u3002<\/p>\n\n\n\n

\u3000\u3000\u524d\u5bfc\u7801\u5524\u9192\u548c\u5b9a\u65f6\u5524\u9192<\/strong>\uff1aLoRa\u6a21\u5757\u901a\u8fc7\u4fe1\u9053\u6d3b\u52a8\u68c0\u6d4b\u5668(CAD)\u6765\u68c0\u6d4b\u4fe1\u53f7\u3002\u5f53\u68c0\u6d4b\u5230\u6709\u6548\u7684LoRa\u524d\u5bfc\u7801\u65f6\uff0c\u6a21\u5757\u88ab\u5524\u9192\u8fdb\u5165\u6570\u636e\u6536\u53d1\u6a21\u5f0f;\u5982\u679c\u6ca1\u6709\u68c0\u6d4b\u5230\u4fe1\u53f7\uff0c\u5219\u6a21\u5757\u7ee7\u7eed\u8fdb\u5165\u4f4e\u529f\u8017\u72b6\u6001\u3002\u8fd9\u79cd\u65b9\u6cd5\u6709\u6548\u5730\u51cf\u5c11\u4e86\u7ec8\u7aef\u7684\u5de5\u4f5c\u65f6\u95f4\uff0c\u4ece\u800c\u8282\u7701\u4e86\u529f\u8017\u3002<\/p>\n\n\n\n

\u3000\u3000MCU\u5de5\u4f5c\u6a21\u5f0f\u4f18\u5316<\/strong>\uff1a\u5728\u8f6f\u4ef6\u5c42\u9762\uff0cMCU\u901a\u8fc7\u201c\u4e2d\u65ad+\u5b9a\u65f6\u5668\u8d85\u65f6\u201d\u63a7\u5236\u5c04\u9891\u6a21\u5757\uff0c\u4e00\u65e6\u5b8c\u6210\u53d1\u9001\u6216\u63a5\u6536\u5373\u8fdb\u5165\u4f11\u7720\u6a21\u5f0f\u3002\u6b64\u5916\uff0c\u52a8\u6001\u5207\u6362MCU\u5f15\u811a\u81f3\u8f93\u5165\u4e0a\u62c9\u548c\u60ac\u6d6e\u72b6\u6001\uff0c\u9002\u7528\u4e8e\u8f83\u957f\u5468\u671f\u7684\u8282\u80fd\u6a21\u5f0f\u3002\u8fd9\u4e9b\u63aa\u65bd\u6709\u52a9\u4e8e\u51cf\u5c11\u9759\u6001\u529f\u8017\u548c\u52a8\u6001\u529f\u8017\u3002<\/p>\n\n\n\n

\u3000\u3000\u786c\u4ef6\u9009\u62e9<\/strong>\uff1a\u9009\u7528\u4f4e\u529f\u8017\u5668\u4ef6\u662f\u5b9e\u73b0\u4f4e\u529f\u8017\u7684\u5173\u952e\u3002\u4f8b\u5982\uff0cSTM8L151C8T6\u8fd9\u79cd\u8d85\u4f4e\u529f\u8017MCU\uff0c\u5728\u4e0d\u5e26RTC\u65f6\u4f11\u7720\u7535\u6d41\u4ec5\u4e3a400nA\uff0c\u5e26RTC\u65f6\u4e3a1.4uA\u3002\u8fd9\u79cd\u4f4e\u529f\u8017MCU\u6709\u52a9\u4e8e\u964d\u4f4e\u6574\u4e2a\u7cfb\u7edf\u7684\u80fd\u8017\u3002<\/p>\n\n\n\n

\u3000\u3000\u9ad8\u6548\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u8bbe\u8ba1<\/strong>\uff1a\u91c7\u7528\u9ad8\u6548\u7387\u7b97\u6cd5\u5982\u67e5\u8868CRC16\u8ba1\u7b97\uff0c\u53ef\u4ee5\u52a0\u901fMCU\u8fdb\u5165\u4f4e\u529f\u8017\u72b6\u6001\u3002\u6b64\u5916\uff0c\u8bbe\u8ba1\u4f18\u79c0\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4fbf\u4e8e\u4fee\u6539\u5f15\u811a\u529f\u80fd\u800c\u65e0\u9700\u4fee\u6539\u7a0b\u5e8f\uff0c\u4ee5\u51cf\u5c11\u7ef4\u62a4\u6210\u672c\u3002<\/p>\n\n\n\n

\u3000\u3000\u4fe1\u9053\u914d\u7f6e\u548c\u8c03\u5236\u53c2\u6570\u4f18\u5316<\/strong>\uff1a\u901a\u8fc7\u8c03\u6574\u8c03\u5236\u5e26\u5bbd(BW)\u3001\u6269\u9891\u56e0\u5b50(SF)\u548c\u7ea0\u9519\u7f16\u7801\u7387(CR)\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u4f18\u5316LoRa\u7684\u8c03\u5236\u89e3\u8c03\u6280\u672f\uff0c\u4ece\u800c\u63d0\u9ad8\u901a\u4fe1\u6548\u7387\u5e76\u964d\u4f4e\u529f\u8017\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u901a\u8fc7\u591a\u79cd\u786c\u4ef6\u548c\u8f6f\u4ef6\u4f18\u5316\u624b\u6bb5\u5b9e\u73b0\u4e86\u4f4e\u529f\u8017\u7684\u76ee\u6807\uff0c\u5305\u62ec\u9ad8\u6548\u7684\u8c03\u5236\u6280\u672f\u3001\u667a\u80fd\u7684\u5524\u9192\u673a\u5236\u3001\u4f4e\u529f\u8017MCU\u7684\u9009\u62e9\u4ee5\u53ca\u9ad8\u6548\u7684\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u8bbe\u8ba1\u7b49\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001 LoRa\u65e0\u7ebf\u6280\u672f\u5982\u4f55\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\u548c\u9ad8\u7a7f\u900f\u529b?<\/h2>\n\n\n\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\u548c\u9ad8\u7a7f\u900f\u529b\uff0c\u8fd9\u4e9b\u65b9\u5f0f\u5305\u62ec\u6269\u9891\u8c03\u5236\u3001\u524d\u5411\u9519\u8bef\u6821\u6b63\u7f16\u7801(FEC)\u3001\u4ee5\u53ca\u4f18\u5316\u7684\u4fe1\u53f7\u5904\u7406\u6280\u672f\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u91c7\u7528\u4e86\u4e00\u79cd\u7279\u6b8a\u7684\u6269\u9891\u8c03\u5236\u6280\u672f\uff0c\u79f0\u4e3aChirp Spread Spectrum(CSS)\uff0c\u8fd9\u79cd\u6280\u672f\u80fd\u591f\u663e\u8457\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u4f20\u8f93\u8ddd\u79bb\u3002CSS\u901a\u8fc7\u5c06\u6570\u636e\u4fe1\u53f7\u6269\u5c55\u5230\u66f4\u5bbd\u7684\u9891\u8c31\u4e0a\uff0c\u4ece\u800c\u51cf\u5c11\u4e86\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u53d7\u5230\u7684\u5e72\u6270\uff0c\u4f7f\u5f97LoRa\u80fd\u591f\u5728\u76f8\u540c\u7684\u529f\u8017\u6761\u4ef6\u4e0b\u6bd4\u5176\u4ed6\u65e0\u7ebf\u65b9\u5f0f\u4f20\u64ad\u66f4\u8fdc\u7684\u8ddd\u79bb\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u8fd8\u7ed3\u5408\u4e86\u524d\u5411\u9519\u8bef\u6821\u6b63(FEC)\u7f16\u7801\uff0c\u8fd9\u79cd\u7f16\u7801\u65b9\u5f0f\u80fd\u591f\u5728\u63a5\u6536\u7aef\u81ea\u52a8\u7ea0\u6b63\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u7684\u6bd4\u7279\u9519\u8bef\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002\u6b64\u5916\uff0cLoRa\u82af\u7247\u7684\u63a5\u6536\u7075\u654f\u5ea6\u6781\u9ad8\uff0c\u6700\u9ad8\u53ef\u8fbe-148dBm\uff0c\u572820dBm\u53d1\u5c04\u529f\u7387\u4e0b\uff0c\u94fe\u8def\u9884\u7b97\u53ef\u8fbe168dB\uff0c\u8fd9\u4f7f\u5f97LoRa\u80fd\u591f\u63d0\u4f9b\u66f4\u5e7f\u66f4\u6df1\u7684\u8986\u76d6\u80fd\u529b\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e3a\u4e86\u8fdb\u4e00\u6b65\u589e\u5f3a\u901a\u4fe1\u8303\u56f4\uff0cLoRa\u534f\u8bae\u8fd8\u8003\u8651\u4e86\u5929\u7ebf\u589e\u76ca\u548c\u9ad8\u5ea6\u3001\u4f20\u8f93\u529f\u7387\u548c\u63a5\u6536\u5668\u7075\u654f\u5ea6\u7b49\u56e0\u7d20\u3002\u8fd9\u4e9b\u56e0\u7d20\u5171\u540c\u4f5c\u7528\uff0c\u4f7f\u5f97LoRa\u5728\u7a7a\u65f7\u533a\u57df\u65e0\u906e\u6321\u65f6\u53ef\u4ee5\u5b9e\u73b0\u8d85\u8fc715\u516c\u91cc\u7684\u4f20\u8f93\u8ddd\u79bb\uff0c\u5e76\u4e14\u5728\u6709\u5f3a\u906e\u6321\u7684\u60c5\u51b5\u4e0b\u4e5f\u80fd\u4fdd\u6301\u8f83\u5f3a\u7684\u7a7f\u900f\u529b\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u901a\u8fc7\u6269\u9891\u8c03\u5236\u3001\u524d\u5411\u9519\u8bef\u6821\u6b63\u7f16\u7801\u3001\u4f18\u5316\u7684\u4fe1\u53f7\u5904\u7406\u6280\u672f\u4ee5\u53ca\u5408\u7406\u7684\u7f51\u7edc\u67b6\u6784\u8bbe\u8ba1\uff0c\u5b9e\u73b0\u4e86\u8fdc\u8ddd\u79bb\u901a\u4fe1\u548c\u9ad8\u7a7f\u900f\u529b\u3002<\/p>\n\n\n\n

\u3000\u3000\u56db\u3001 LoRa\u6280\u672f\u652f\u6301\u7684\u5927\u89c4\u6a21\u8fde\u63a5\u80fd\u529b\u662f\u5982\u4f55\u5b9e\u73b0\u7684?<\/h2>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u652f\u6301\u5927\u89c4\u6a21\u8fde\u63a5\u80fd\u529b\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u5b9e\u73b0\uff1a<\/p>\n\n\n\n

\u3000\u3000\u591a\u4fe1\u9053\u901a\u4fe1<\/strong>\uff1aLoRa\u6280\u672f\u5229\u7528\u5176\u7269\u7406\u5c42(PHY)\u548cMAC\u5c42\u534f\u8baeLoRaWAN\uff0c\u91c7\u7528\u591a\u4fe1\u9053\u901a\u4fe1\u673a\u5236\u3002\u6bcf\u4e2aLoRa\u6570\u636e\u5305\u5360\u7528\u8f83\u7a84\u7684\u5e26\u5bbd(\u4f8b\u5982\u9ed8\u8ba4\u4e3a125 kHz)\uff0c\u56e0\u6b64\u6574\u4e2aLoRa\u9891\u8c31\u53ef\u4ee5\u5212\u5206\u4e3a\u8bb8\u591a\u5b50\u4fe1\u9053\u3002\u591a\u4e2aLoRa\u8282\u70b9\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u7269\u7406\u4fe1\u9053\u4e0a\u540c\u65f6\u901a\u4fe1\uff0c\u800c\u4e0d\u4f1a\u76f8\u4e92\u5e72\u6270\u3002<\/p>\n\n\n\n

\u3000\u3000\u6269\u5c55\u9891\u8c31\u8c03\u5236\uff08CSS\uff09<\/strong> \uff1aLoRa\u4f7f\u7528chirp\u6269\u5c55\u9891\u8c31\u8c03\u5236\u6280\u672f\uff0c\u5c06\u7a84\u5e26\u4fe1\u53f7\u6269\u5c55\u5230\u66f4\u5bbd\u7684\u4fe1\u9053\u5e26\u5bbd\uff0c\u4ece\u800c\u589e\u5f3a\u6297\u5e72\u6270\u80fd\u529b\u3002\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u4f7f\u5f97LoRa\u80fd\u591f\u5728\u672a\u6388\u6743\u7684ISM\u9891\u6bb5(\u5982\u6b27\u6d32\u7684868 MHz\u3001\u5317\u7f8e\u7684915 MHz\u548c\u4e9a\u6d32\u7684433 MHz)\u4e0a\u8fdb\u884c\u957f\u8ddd\u79bb\u3001\u4f4e\u6bd4\u7279\u7387\u548c\u4f4e\u529f\u8017\u901a\u4fe1\u3002<\/p>\n\n\n\n

\u3000\u3000\u7f51\u5173\u8bbe\u8ba1\u4f18\u5316<\/strong>\uff1a\u4f20\u7edf\u7684LoRa\u7f51\u5173\u4f7f\u7528\u786c\u8fde\u7ebf\u63a5\u6536\u94fe\u8def\uff0c\u53ea\u80fd\u8986\u76d6\u4e0d\u52301%\u7684\u903b\u8f91\u4fe1\u9053\uff0c\u9650\u5236\u4e86\u5927\u89c4\u6a21LoRa\u901a\u4fe1\u7684\u6f5c\u529b\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0c\u63d0\u51fa\u4e86\u4e00\u79cd\u540d\u4e3aXGate\u7684\u65b0\u7f51\u5173\u8bbe\u8ba1\uff0c\u5b83\u4f7f\u7528\u5355\u4e2a\u63a5\u6536\u94fe\u8def\u540c\u65f6\u63a5\u6536\u6765\u81ea\u6240\u6709\u903b\u8f91\u4fe1\u9053\u7684\u6570\u636e\u5305\u3002\u8fd9\u79cd\u8bbe\u8ba1\u6839\u636e\u63a5\u6536\u5230\u7684\u6570\u636e\u5305\u63d0\u53d6\u7684\u5143\u4fe1\u606f\uff0c\u52a8\u6001\u5206\u914d\u8f6f\u4ef6\u63a7\u5236\u7684\u63a5\u6536\u94fe\u8def\u548c\u89e3\u8c03\u5668\u8d44\u6e90\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86LoRa\u4f20\u8f93\u7684\u53ef\u6269\u5c55\u6027\u548c\u7075\u6d3b\u7684\u7f51\u7edc\u8bbf\u95ee\u3002<\/p>\n\n\n\n

\u3000\u3000\u8d44\u6e90\u5206\u914d\u7b56\u7565<\/strong>\uff1aLoRa\u901a\u8fc7\u667a\u80fd\u8d44\u6e90\u5206\u914d\u7b56\u7565\u6765\u6700\u5927\u5316\u7f51\u7edc\u6027\u80fd\u3002\u5b83\u5c06\u8986\u76d6\u533a\u57df\u5212\u5206\u4e3a\u4e00\u7ec4\u975e\u91cd\u53e0\u533a\u57df\uff0c\u6bcf\u4e2a\u533a\u57df\u88ab\u5206\u914d\u4e00\u4e2a\u72ec\u7279\u7684\u6269\u9891\u56e0\u5b50(SF)\u548c\u53d1\u5c04\u529f\u7387\u503c\u3002\u9760\u8fd1\u7f51\u5173\u7684\u7ec8\u7aef\u8bbe\u5907(EDs)\u4f7f\u7528\u8f83\u4f4e\u7684SF\u548c\u8f83\u5c0f\u7684\u53d1\u5c04\u529f\u7387\uff0c\u4ee5\u51cf\u5c11SF\u95f4\u7684\u5e72\u6270\u5e76\u8282\u7701\u7ec8\u7aef\u8bbe\u5907\u7684\u529f\u7387\u6d88\u8017\u3002<\/p>\n\n\n\n

\u3000\u3000\u5e76\u53d1\u4f20\u8f93\u4e0e\u63a5\u6536\u591a\u6837\u6027<\/strong>\uff1aLoRa\u6280\u672f\u652f\u6301\u5e76\u53d1\u4f20\u8f93\u548c\u63a5\u6536\u591a\u6837\u6027\uff0c\u8fd9\u6709\u52a9\u4e8e\u63d0\u9ad8\u7f51\u7edc\u541e\u5410\u91cf\u548c\u53ef\u9760\u6027\u3002\u4f8b\u5982\uff0c\u5206\u5e03\u5f0f\u961f\u5217(DQ)\u673a\u5236\u7ed3\u5408\u5e26\u5185\u5168\u53cc\u5de5(IBFD)\u6280\u672f\u53ef\u4ee5\u5feb\u901f\u89e3\u51b3\u78b0\u649e\u95ee\u9898\uff0c\u5e76\u51cf\u5c11\u63a7\u5236\u5f00\u9500\uff0c\u4ece\u800c\u63d0\u5347\u541e\u5410\u91cf\u3002<\/p>\n\n\n\n

\u3000\u3000\u4f4e\u529f\u8017\u5e7f\u57df\u7f51\uff08LPWAN\uff09\u7279\u6027<\/strong>\uff1aLoRa\u4f5c\u4e3aLPWAN\u6280\u672f\u4e4b\u4e00\uff0c\u7279\u522b\u9002\u7528\u4e8e\u957f\u8ddd\u79bb\u3001\u4f4e\u6bd4\u7279\u7387\u548c\u4f4e\u529f\u8017\u901a\u4fe1\u3002\u5176\u4f4e\u6210\u672c\u3001\u4f4e\u5e26\u5bbd\u548c\u4f4e\u5355\u4f4d\u80fd\u8017\u7279\u6027\u4f7f\u5176\u975e\u5e38\u9002\u5408\u5927\u89c4\u6a21\u5730\u7406\u533a\u57df\u5185\u7684\u7269\u8054\u7f51\u8fde\u63a5\u3002<\/p>\n\n\n\n

\u3000\u3000LoRa\u6280\u672f\u652f\u6301\u5927\u89c4\u6a21\u8fde\u63a5\u80fd\u529b\u7684\u5173\u952e\u5728\u4e8e\u5176\u591a\u4fe1\u9053\u901a\u4fe1\u3001\u6269\u5c55\u9891\u8c31\u8c03\u5236\u3001\u4f18\u5316\u7684\u7f51\u5173\u8bbe\u8ba1\u3001\u667a\u80fd\u8d44\u6e90\u5206\u914d\u7b56\u7565\u4ee5\u53ca\u5e76\u53d1\u4f20\u8f93\u4e0e\u63a5\u6536\u591a\u6837\u6027\u7b49\u6280\u672f\u624b\u6bb5\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e94\u3001 LoRa\u65e0\u7ebf\u6280\u672f\u4e0e\u5176\u4ed6\u7269\u8054\u7f51\u901a\u4fe1\u6280\u672f(\u5982ZigBee\u3001NB-IoT)\u76f8\u6bd4\u6709\u54ea\u4e9b\u4f18\u52bf\u548c\u52a3\u52bf?<\/h2>\n\n\n\n

\u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u4e0e\u5176\u4ed6\u7269\u8054\u7f51\u901a\u4fe1\u6280\u672f(\u5982ZigBee\u3001NB-IoT)\u76f8\u6bd4\uff0c\u5177\u6709\u4ee5\u4e0b\u4f18\u52bf\u548c\u52a3\u52bf\uff1a<\/p>\n\n\n\n

\u3000\u30001. \u4f18\u52bf\uff1a<\/h3>\n\n\n\n
    \n
  • \u3000\u3000\u5efa\u8bbe\u6210\u672c\u4f4e<\/strong>\uff1aLoRa\u6280\u672f\u7684\u7f51\u7edc\u90e8\u7f72\u66f4\u4e3a\u7b80\u4fbf\uff0c\u65e0\u9700\u5927\u89c4\u6a21\u5efa\u8bbe\u57fa\u7ad9\uff0c\u964d\u4f4e\u4e86\u5efa\u8bbe\u6210\u672c\u3002\u4f8b\u5982\uff0cLoRa\u7684\u5efa\u8bbe\u6210\u672c\u57283.500-5.000\u5143\u4e4b\u95f4\uff0c\u800cNB-IoT\u7684\u5efa\u8bbe\u6210\u672c\u5219\u9ad8\u8fbe8\u4e07\u5143\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u6570\u636e\u4fdd\u5bc6\u6027\u9ad8<\/strong>\uff1aLoRa\u5141\u8bb8\u7528\u6237\u81ea\u5efa\u7f51\u7edc\uff0c\u786e\u4fdd\u7ec8\u7aef\u6570\u636e\u7684\u5b89\u5168\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cNB-IoT\u7684\u6570\u636e\u9700\u8981\u7ecf\u8fc7\u8fd0\u8425\u5546\u5904\u7406\uff0c\u5b58\u5728\u4e00\u5b9a\u7684\u6570\u636e\u5b89\u5168\u98ce\u9669\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u4f4e\u529f\u8017<\/strong>\uff1aLoRa\u6280\u672f\u901a\u8fc7\u8bbe\u5b9a\u4f11\u7720\u65f6\u95f4\u6765\u8282\u7701\u7535\u6c60\u7535\u91cf\uff0c\u4f7f\u5176\u5728\u9700\u8981\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u7269\u8054\u7f51\u8bbe\u5907\u4e2d\u7279\u522b\u6709\u7528\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u957f\u8ddd\u79bb\u901a\u4fe1<\/strong>\uff1aLoRa\u6280\u672f\u901a\u8fc7\u4f7f\u7528\u4f4e\u9891\u4fe1\u53f7\uff0c\u80fd\u591f\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\uff0c\u9002\u7528\u4e8e\u9700\u8981\u957f\u8ddd\u79bb\u6570\u636e\u4f20\u8f93\u7684\u573a\u666f\uff0c\u5982\u519c\u4e1a\u3001\u5de5\u4e1a\u548c\u516c\u5171\u5b89\u5168\u9886\u57df\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u7f51\u7edc\u7075\u6d3b\u6027<\/strong>\uff1aLoRa\u652f\u6301\u516c\u6709\u4e91\u548c\u79c1\u6709\u4e91\u4e24\u79cd\u7f51\u7edc\u6a21\u5f0f\uff0c\u7528\u6237\u53ef\u6839\u636e\u9700\u6c42\u7075\u6d3b\u9009\u62e9\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u30002. \u52a3\u52bf\uff1a<\/h3>\n\n\n\n
      \n
    • \u3000\u3000\u8fd0\u884c\u901f\u7387\u8f83\u4f4e<\/strong>\uff1aLoRa\u6280\u672f\u7684\u4e0a\u884c\u901f\u7387\u533a\u95f4\u4e3a0.3~50kbps\uff0c\u800cNB-IoT\u6280\u672f\u7684\u4e0a\u884c\u901f\u7387\u533a\u95f4\u4e3a160~250kbps\uff0cNB-IoT\u7684\u8fd0\u884c\u901f\u7387\u66f4\u5feb\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u8986\u76d6\u80fd\u529b\u8f83\u5f31<\/strong>\uff1aLoRa\u6280\u672f\u7684\u6700\u5927\u8026\u5408\u635f\u8017(MCL)\u7ea6\u4e3a154db\uff0c\u800cNB-IoT\u6280\u672f\u7684\u6700\u5927\u8026\u5408\u635f\u8017(MCL)\u7ea6\u4e3a164db\uff0cNB-IoT\u7684\u8986\u76d6\u80fd\u529b\u66f4\u5f3a\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u8fde\u63a5\u91cf\u8f83\u5c11<\/strong>\uff1aLoRa\u6280\u672f\u5728\u5355\u6247\u533a\u53ef\u652f\u63016.5\u4e07\u8bbe\u5907\u8fde\u63a5\uff0c\u800cNB-IoT\u6280\u672f\u5728\u5355\u6247\u533a\u53ef\u652f\u630110\u4e07\u8bbe\u5907\u8fde\u63a5\uff0cNB-IoT\u7684\u8fde\u63a5\u91cf\u66f4\u5927\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u666e\u53ca\u7a0b\u5ea6\u8f83\u4f4e<\/strong>\uff1a\u5c3d\u7ba1LoRa\u5728\u67d0\u4e9b\u7279\u5b9a\u573a\u666f\u4e0b\u8868\u73b0\u51fa\u8272\uff0c\u4f46\u5176\u666e\u53ca\u7a0b\u5ea6\u4e0d\u5982NB-IoT\u548cWi-Fi\u7b49\u5176\u4ed6\u6280\u672f\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u30003. \u603b\u7ed3\uff1a<\/h3>\n\n\n\n

      \u3000\u3000LoRa\u65e0\u7ebf\u6280\u672f\u5728\u5efa\u8bbe\u6210\u672c\u3001\u6570\u636e\u4fdd\u5bc6\u6027\u548c\u4f4e\u529f\u8017\u65b9\u9762\u5177\u6709\u663e\u8457\u4f18\u52bf\uff0c\u9002\u5408\u9700\u8981\u957f\u8ddd\u79bb\u901a\u4fe1\u548c\u9ad8\u6570\u636e\u4fdd\u5bc6\u6027\u7684\u5e94\u7528\u573a\u666f\u3002\u7136\u800c\uff0c\u5728\u8fd0\u884c\u901f\u7387\u3001\u8986\u76d6\u80fd\u529b\u548c\u8fde\u63a5\u91cf\u65b9\u9762\uff0cLoRa\u6280\u672f\u4e0d\u5982NB-IoT\uff0c\u8fd9\u4f7f\u5f97NB-IoT\u5728\u516c\u5171\u670d\u52a1\u548c\u5927\u89c4\u6a21\u7269\u8054\u7f51\u5e94\u7528\u4e2d\u66f4\u5177\u7ade\u4e89\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

      LoRa\u6280\u672f\u4e4b\u6240\u4ee5\u201c\u795e\u201d\u539f\u56e0\u5c31\u662f\u901a\u8fc7\u5176\u72ec\u7279\u7684\u6269\u9891\u901a\u4fe1\u6280\u672f\u3001\u4f4e\u529f\u8017\u8bbe\u8ba1\u548c\u5f3a\u5927\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u5728\u7269\u8054\u7f51\u9886\u57df\u4e2d\u5c55\u73b0\u4e86\u5353\u8d8a\u7684\u6027\u80fd\uff0c\u4f7f\u5176\u6210\u4e3a\u4e00\u79cd\u6781\u5177\u5438\u5f15\u529b\u7684\u65e0\u7ebf\u901a\u4fe1\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n","protected":false},"author":1,"featured_media":96079,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[54],"class_list":["post-99304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-l-2"],"_links":{"self":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/99304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/comments?post=99304"}],"version-history":[{"count":0,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/posts\/99304\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media\/96079"}],"wp:attachment":[{"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/media?parent=99304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/categories?post=99304"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.viralrail.com\/wp-json\/wp\/v2\/tags?post=99304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}