{"id":101571,"date":"2025-02-28T11:31:13","date_gmt":"2025-02-28T03:31:13","guid":{"rendered":"\/\/www.viralrail.com\/?p=101571"},"modified":"2025-02-28T11:31:16","modified_gmt":"2025-02-28T03:31:16","slug":"lmkszdzdxcs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/101571.html","title":{"rendered":"LoRa\u6a21\u5757\u8bbe\u7f6e\u5730\u5740\u5b9a\u5411\u4f20\u8f93"},"content":{"rendered":"\n

\u3000\u3000LoRa<\/strong>(Long Range)\u662f\u4e00\u79cd\u4f4e\u529f\u8017\u5e7f\u57df\u7f51\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u548c\u6a21\u5757\uff0c\u4e13\u4e3a\u7269\u8054\u7f51\u5e94\u7528\u8bbe\u8ba1\uff0c\u80fd\u5728\u6781\u4f4e\u529f\u8017\u6761\u4ef6\u4e0b\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u6570\u636e\u4f20\u8f93(\u57ce\u5e02\u73af\u5883\u4e0b\u53ef\u8fbe3-5\u516c\u91cc\uff0c\u4e61\u6751\u5f00\u9614\u5730\u533a\u53ef\u8fbe15\u516c\u91cc\u4ee5\u4e0a);LoRa\u6a21\u5757\u91c7\u7528\u6269\u9891\u901a\u4fe1\u6280\u672f\uff0c\u5de5\u4f5c\u5728\u514d\u8bb8\u53ef\u7684ISM\u9891\u6bb5(\u5982433MHz\u3001868MHz\u548c915MHz)\uff0c\u5177\u6709\u51fa\u8272\u7684\u7a7f\u900f\u80fd\u529b\u548c\u6297\u5e72\u6270\u6027\uff0c\u540c\u65f6\u4f20\u8f93\u901f\u7387\u8f83\u4f4e(0.3-50kbps)\u4f46\u8db3\u4ee5\u6ee1\u8db3\u4f20\u611f\u5668\u6570\u636e\u4f20\u8f93\u9700\u6c42;\u5176\u6700\u5927\u4f18\u52bf\u5728\u4e8e\u8d85\u4f4e\u529f\u8017(\u7535\u6c60\u53ef\u6301\u7eed\u5de5\u4f5c\u6570\u5e74)\u3001\u9ad8\u7075\u654f\u5ea6(\u53ef\u5728-137dBm\u4e0b\u63a5\u6536\u4fe1\u53f7)\u548c\u4f4e\u6210\u672c\uff0c\u4f7f\u5176\u6210\u4e3a\u8fde\u63a5\u8fdc\u8ddd\u79bb\u5206\u6563\u4f20\u611f\u5668\u7684\u7406\u60f3\u9009\u62e9\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u667a\u6167\u519c\u4e1a\u3001\u667a\u6167\u57ce\u5e02\u3001\u8d44\u4ea7\u8ffd\u8e2a\u3001\u73af\u5883\u76d1\u6d4b\u7b49\u9700\u8981\u5e7f\u57df\u8986\u76d6\u4e14\u6570\u636e\u91cf\u4e0d\u5927\u7684\u7269\u8054\u7f51\u573a\u666f\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001\u57fa\u672c\u539f\u7406\u4e0e\u6838\u5fc3\u53c2\u6570<\/h2>\n\n\n\n

\u3000\u30001. \u5730\u5740\u4e0e\u7f51\u7edcID\u7684\u7ed1\u5b9a\u5173\u7cfb<\/strong><\/h3>\n\n\n\n

\u3000\u3000\u6bcf\u4e2aLoRa\u6a21\u5757<\/strong>\u9700\u901a\u8fc7AT+ADDRESS\u8bbe\u7f6e\u672c\u5730\u5730\u5740(\u5982AT+ADDR=100)\uff0c\u5e76\u901a\u8fc7AT+TADDR\u8bbe\u7f6e\u76ee\u6807\u5730\u5740(\u5982AT+TADDR=124)\u3002\u53d1\u9001\u65b9\u7684\u76ee\u6807\u5730\u5740\u5fc5\u987b\u4e0e\u63a5\u6536\u65b9\u7684\u672c\u5730\u5730\u5740\u4e00\u81f4\uff0c\u5426\u5219\u901a\u4fe1\u5931\u8d25\u3002<\/p>\n\n\n\n

\u3000\u3000\u7f51\u7edcID(AT+NETWORKID)\u7528\u4e8e\u5212\u5206\u901a\u4fe1\u7ec4\uff0c\u4e0d\u540c\u7ec4\u7684\u8bbe\u5907\u5373\u4f7f\u5730\u5740\u5339\u914d\u4e5f\u65e0\u6cd5\u901a\u4fe1\u3002\u63a8\u8350\u503c\u8303\u56f4\u4e3a1~15.<\/p>\n\n\n\n

\u3000\u30002. \u7269\u7406\u5c42\u53c2\u6570\u4e00\u81f4\u6027\u8981\u6c42<\/strong><\/h3>\n\n\n\n
    \n
  • \u3000\u3000\u9891\u7387<\/strong>\uff1a\u901a\u8fc7AT+BAND\u8bbe\u7f6e\u4e2d\u5fc3\u9891\u7387(\u5982470.4MHz\u9700\u8f93\u5165AT+FREQ=47040000)\uff0c\u6536\u53d1\u53cc\u65b9\u9891\u7387\u5fc5\u987b\u76f8\u540c\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u901f\u7387\u7b49\u7ea7<\/strong>\uff1aAT+RATE\u8bbe\u7f6e\u901f\u7387\u7b49\u7ea7(0~9)\uff0c\u7b49\u7ea7\u4e0d\u540c\u4f1a\u5bfc\u81f4\u901a\u4fe1\u5931\u8d25\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u5c04\u9891\u53c2\u6570<\/strong>\uff1a\u901a\u8fc7AT+PARAMETER\u914d\u7f6e\u6269\u9891\u56e0\u5b50(SF)\u3001\u5e26\u5bbd(BW)\u3001\u7f16\u7801\u7387(CR)\u7b49\u3002\u4f8b\u5982AT+PARAMETER=9.7.1.12\u8868\u793aSF=9\u3001BW=125kHz\u3001CR=4\/5\u3001\u524d\u5bfc\u7801=12.SF\u503c\u8d8a\u9ad8\u4f20\u8f93\u8ddd\u79bb\u8d8a\u957f\uff0c\u4f46\u4f20\u8f93\u65f6\u95f4\u589e\u52a0\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u30003. \u7279\u6b8a\u5730\u5740\u529f\u80fd<\/strong><\/h3>\n\n\n\n
      \n
    • \u3000\u3000\u5e7f\u64ad\u5730\u5740<\/strong>\uff1a\u76ee\u6807\u5730\u5740\u8bbe\u4e3a0xFFFF(\u90e8\u5206\u6a21\u5757\u652f\u63010x0000)\u65f6\uff0c\u6570\u636e\u4f1a\u5e7f\u64ad\u81f3\u540c\u9891\u6bb5\u6240\u6709\u8bbe\u5907\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u76d1\u542c\u6a21\u5f0f<\/strong>\uff1a\u672c\u5730\u5730\u5740\u8bbe\u4e3a0xFFFF\u65f6\u6a21\u5757\u8fdb\u5165\u76d1\u542c\u72b6\u6001\uff0c\u63a5\u6536\u6240\u6709\u540c\u9891\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n

      \u3000\u3000\u4e8c\u3001\u5b9a\u5411\u4f20\u8f93\u914d\u7f6e\u6b65\u9aa4<\/h2>\n\n\n\n

      \u3000\u30001. \u786c\u4ef6\u8fde\u63a5<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u4f7f\u7528USB\u8f6cTTL\u5de5\u5177\u8fde\u63a5\u6a21\u5757\uff0c\u786e\u4fddVCC\u3001GND\u3001TXD\u3001RXD\u6b63\u786e\u63a5\u7ebf\u3002<\/p>\n\n\n\n

      \u3000\u3000MD0\u5f15\u811a\u72b6\u6001\u51b3\u5b9a\u5de5\u4f5c\u6a21\u5f0f\uff1a\u60ac\u7a7a\u6216\u63a5\u5730\u8fdb\u5165\u4e00\u822c\u901a\u4fe1\u6a21\u5f0f\uff0c\u62c9\u9ad8\u8fdb\u5165\u914d\u7f6e\u6a21\u5f0f\u3002<\/p>\n\n\n\n

      \u3000\u30002. \u8f6f\u4ef6\u914d\u7f6e\u6d41\u7a0b<\/strong><\/h3>\n\n\n\n
      \/\/ \u793a\u4f8b\uff1a\u6a21\u5757A\uff08\u53d1\u9001\u7aef\uff09\u4e0e\u6a21\u5757B\uff08\u63a5\u6536\u7aef\uff09\u914d\u7f6e\n\/\/ \u6a21\u5757A\u914d\u7f6e\uff08\u5730\u5740100\uff0c\u76ee\u6807124\uff09\nAT+ADDRESS=100       \/\/ \u8bbe\u7f6e\u672c\u5730\u5730\u5740\nAT+TADDR=124         \/\/ \u8bbe\u7f6e\u76ee\u6807\u5730\u5740\nAT+BAND=470400000    \/\/ \u8bbe\u7f6e\u9891\u7387\u4e3a470.4MHz\nAT+RATE=8            \/\/ \u901f\u7387\u7b49\u7ea78\nAT+PARAMETER=9,7,1,12 \/\/ SF=9, BW=125kHz, CR=4\/5, \u524d\u5bfc\u780112\n\n\/\/ \u6a21\u5757B\u914d\u7f6e\uff08\u5730\u5740124\uff0c\u76ee\u6807100\uff09\nAT+ADDRESS=124\nAT+TADDR=100\nAT+BAND=470400000\nAT+RATE=8\nAT+PARAMETER=9,7,1,12<\/code><\/pre>\n\n\n\n

      \u3000\u3000\u53c2\u6570\u4fdd\u5b58<\/strong>\uff1a\u914d\u7f6e\u5b8c\u6210\u540e\u53d1\u9001AT+SAVE\uff0c\u65ad\u7535\u91cd\u542f\u4f7f\u914d\u7f6e\u751f\u6548\u3002<\/p>\n\n\n\n

      \u3000\u3000\u63a5\u6536\u6a21\u5f0f\u6fc0\u6d3b<\/strong>\uff1a\u63a5\u6536\u65b9\u9700\u6267\u884cAT+RECV=1\u5f00\u542f\u6301\u7eed\u63a5\u6536\u3002<\/p>\n\n\n\n

      \u3000\u30003. \u6570\u636e\u53d1\u9001\u683c\u5f0f<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u900f\u660e\u4f20\u8f93<\/strong>\uff1a\u76f4\u63a5\u53d1\u9001\u6709\u6548\u8f7d\u8377\uff0c\u4f46\u9700\u5730\u5740\u3001\u4fe1\u9053\u3001\u901f\u7387\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n\n\n\n

      \u3000\u3000\u5b9a\u5411\u4f20\u8f93<\/strong>\uff1a\u6570\u636e\u5305\u9700\u5305\u542b\u76ee\u6807\u5730\u5740\u3001\u4fe1\u9053\u548c\u6709\u6548\u6570\u636e\u3002\u4f8b\u5982\u53d1\u9001\u7ed9\u5730\u57400x05\u3001\u4fe1\u90539\u7684\u6570\u636e00 05 09 22 33.\u63a5\u6536\u7aef\u89e3\u6790\u540e\u5f97\u523022 33.<\/p>\n\n\n\n

      \u3000\u3000HEX\u683c\u5f0f\u8981\u6c42<\/strong>\uff1a\u5730\u5740\u548c\u4fe1\u9053\u9700\u8f6c\u6362\u4e3a\u9ad8\u4f4d\u5728\u524d(Big-Endian)\u768416\u8fdb\u5236\u683c\u5f0f\u3002<\/p>\n\n\n\n

      \u3000\u3000\u4e09\u3001\u4e3b\u6d41\u6a21\u5757\u5dee\u5f02\u4e0e\u517c\u5bb9\u6027<\/h2>\n\n\n\n

      \u3000\u30001. SX127x\u7cfb\u5217\uff08\u5982Reyax\u6a21\u5757\uff09<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u652f\u6301\u539f\u751fAT\u547d\u4ee4\u914d\u7f6e\u5730\u5740\u548c\u7f51\u7edcID\uff0c\u901a\u8fc7AT+SEND=<\u5730\u5740>,<\u6570\u636e>\u76f4\u63a5\u5b9a\u5411\u53d1\u9001\u3002<\/p>\n\n\n\n

      \u3000\u3000\u8f6f\u4ef6\u5e93\u9700\u5904\u7406\u5730\u5740\u5c01\u88c5\uff0c\u4f8b\u5982\u5728\u6570\u636e\u5305\u5934\u90e8\u6dfb\u52a0\u76ee\u6807\u5730\u5740\u548c\u4fe1\u9053\u4fe1\u606f\u3002<\/p>\n\n\n\n

      \u3000\u30002. Heltec\u6a21\u5757\uff08\u57fa\u4e8eESP32+SX127x\uff09<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u539f\u751fLoRa\u9a71\u52a8\u5e93(\u5982Arduino LoRa\u5e93)\u4e0d\u652f\u6301\u8282\u70b9\u5730\u5740\u529f\u80fd<\/strong>\uff0c\u9700\u81ea\u884c\u5b9e\u73b0\u4e0a\u5c42\u534f\u8bae\u3002<\/p>\n\n\n\n

      \u3000\u3000\u66ff\u4ee3\u65b9\u6848\uff1a\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93(\u5982RadioHead)\u6216\u96c6\u6210\u7f51\u5173(\u5982TTN)\u5b9e\u73b0\u5730\u5740\u7ba1\u7406\u3002<\/p>\n\n\n\n

      \u3000\u30003. \u53cc\u9891\u901a\u9053\u6280\u672f<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u90e8\u5206\u9ad8\u7aef\u6a21\u5757\u652f\u6301\u53cc\u9891\u901a\u4fe1\uff0c\u901a\u8fc7\u5f02\u9891\u901a\u9053\u964d\u4f4e\u5e72\u6270\u3002\u914d\u7f6e\u547d\u4ee4\u5982AT+CHANNEL=0.868000000\u548cAT+CHANNEL=1.915000000.<\/p>\n\n\n\n

      \u3000\u3000\u56db\u3001\u8c03\u8bd5\u4e0e\u4f18\u5316\u5efa\u8bae<\/h2>\n\n\n\n

      \u3000\u30001. \u5e38\u89c1\u95ee\u9898\u6392\u67e5<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u901a\u4fe1\u5931\u8d25<\/strong>\uff1a\u68c0\u67e5\u9891\u7387\u3001\u901f\u7387\u7b49\u7ea7\u3001\u6269\u9891\u56e0\u5b50\u662f\u5426\u4e00\u81f4;\u786e\u8ba4\u76ee\u6807\u5730\u5740\u4e0e\u672c\u5730\u5730\u5740\u5339\u914d\u3002<\/p>\n\n\n\n

      \u3000\u3000\u6570\u636e\u622a\u65ad<\/strong>\uff1a\u5173\u95ed\u56de\u663e(AT+ECHO=0)\uff0c\u907f\u514d\u4e32\u53e3\u89e3\u6790\u9519\u8bef\u3002<\/p>\n\n\n\n

      \u3000\u3000\u529f\u8017\u5f02\u5e38<\/strong>\uff1a\u542f\u7528WOR\u6a21\u5f0f(Wake-On-Radio)\uff0c\u901a\u8fc7AT+MODE=WOR\u964d\u4f4e\u5f85\u673a\u529f\u8017\u3002<\/p>\n\n\n\n

      \u3000\u30002. \u6027\u80fd\u4f18\u5316\u7b56\u7565<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u52a8\u6001\u4fe1\u9053\u5207\u6362<\/strong>\uff1a\u5728\u5bc6\u96c6\u90e8\u7f72\u73af\u5883\u4e2d\uff0c\u4f7f\u7528AT+CHANNEL\u52a8\u6001\u5207\u6362\u4fe1\u9053\u907f\u514d\u62e5\u585e\u3002<\/p>\n\n\n\n

      \u3000\u3000\u524d\u5bfc\u7801\u957f\u5ea6<\/strong>\uff1a\u524d\u5bfc\u7801(Preamble)\u5efa\u8bae\u226512.\u964d\u4f4e\u6570\u636e\u5305\u51b2\u7a81\u6982\u7387\u3002<\/p>\n\n\n\n

      \u3000\u3000\u8d1f\u8f7d\u5206\u7247<\/strong>\uff1a\u5f53\u6570\u636e\u8d85\u8fc7240\u5b57\u8282\u65f6\u81ea\u52a8\u5206\u7247\uff0c\u9700\u914d\u7f6eAT+PARAMETER\u4e2d\u7684Payload\u957f\u5ea6\u3002<\/p>\n\n\n\n

      \u3000\u3000\u4e94\u3001\u5e94\u7528\u573a\u666f\u6269\u5c55<\/h2>\n\n\n\n

      \u3000\u30001. \u661f\u578b\u7f51\u7edc<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u4e3b\u8282\u70b9\u5730\u5740\u56fa\u5b9a\u4e3a0x0001.\u5b50\u8282\u70b9\u5730\u5740\u63090x0002~0x00FF\u5206\u914d\u3002\u4e3b\u8282\u70b9\u901a\u8fc7\u5e7f\u64ad\u5730\u5740\u4e0b\u53d1\u6307\u4ee4\uff0c\u5b50\u8282\u70b9\u5b9a\u5411\u56de\u590d\u3002<\/p>\n\n\n\n

      \u3000\u30002. \u4e2d\u7ee7\u4f20\u8f93<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u4e2d\u7ee7\u6a21\u5757\u540c\u65f6\u76d1\u542c\u591a\u4e2a\u4fe1\u9053\uff0c\u901a\u8fc7AT+CHANNEL\u5207\u6362\u5e76\u8f6c\u53d1\u6570\u636e\u3002\u4f8b\u5982\u4e2d\u7ee7\u5730\u57400xA001\u76d1\u542c\u4fe1\u90531\u548c2.\u5b9e\u73b0\u8de8\u4fe1\u9053\u6570\u636e\u63a5\u529b\u3002<\/p>\n\n\n\n

      \u3000\u30003. \u536b\u661f\u7269\u8054\u7f51<\/strong><\/h3>\n\n\n\n

      \u3000\u3000\u9488\u5bf9\u4f4e\u8f68\u536b\u661f\u573a\u666f\uff0c\u4f7f\u7528\u8054\u5408\u540c\u6b65\u7b97\u6cd5\u8865\u507f\u591a\u666e\u52d2\u9891\u79fb\uff0c\u914d\u7f6e\u547d\u4ee4\u5982AT+SYNC=1\u542f\u7528\u589e\u5f3a\u540c\u6b65\u6a21\u5f0f\u3002<\/p>\n\n\n\n

      \u3000\u3000\u901a\u8fc7\u4e0a\u8ff0\u914d\u7f6e\u548c\u4f18\u5316\uff0cLoRa\u6a21\u5757\u53ef\u57281-10\u516c\u91cc\u8303\u56f4\u5185\u5b9e\u73b0\u53ef\u9760\u7684\u5b9a\u5411\u901a\u4fe1\uff0c\u9002\u7528\u4e8e\u667a\u80fd\u8868\u8ba1\u3001\u519c\u4e1a\u76d1\u6d4b\u3001\u5de5\u4e1a\u63a7\u5236\u7b49\u590d\u6742\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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