{"id":92106,"date":"2024-04-26T18:01:13","date_gmt":"2024-04-26T10:01:13","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=92106"},"modified":"2024-04-26T18:01:17","modified_gmt":"2024-04-26T10:01:17","slug":"gdrhscsj","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/92106.html","title":{"rendered":"4G DTU\u5982\u4f55\u4e0a\u4f20\u6570\u636e"},"content":{"rendered":"\n

\u3000\u30004G DTU(\u6570\u636e\u4f20\u8f93\u5355\u5143)<\/strong>\u4e0a\u4f20\u6570\u636e\u7684\u8fc7\u7a0b\u6d89\u53ca\u591a\u4e2a\u6b65\u9aa4\u548c\u6280\u672f\u8981\u70b9\u3002\u63a5\u4e0b\u6765\uff0c\u901a\u8fc7\u914d\u7f6eDTU\u8bbe\u5907\uff0c\u6307\u5b9a\u670d\u52a1\u7aef\u7684IP\u548c\u7aef\u53e3\uff0c\u5b8c\u6210\u8bbe\u5907\u7684\u57fa\u672c\u8bbe\u7f6e\u3002\u6b64\u5916\uff0cDTU\u8bbe\u5907\u4f1a\u6309\u7167\u8bbe\u7f6e\u597d\u7684ModBus\u6307\u4ee4\u4e3b\u52a8\u8f6e\u8be2RS485\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\uff0c\u7136\u540e\u5c06RS485\u8bbe\u5907\u5e94\u7b54\u7684\u6570\u636e\u8f6c\u6362\u6210Alink JSON\u683c\u5f0f\uff0c\u4e0a\u4f20\u7ed9\u963f\u91cc\u4e91\u5e73\u53f0\uff0c\u5e76\u5728\u963f\u91cc\u4e91\u5e73\u53f0\u7684\u7269\u6a21\u578b\u754c\u9762\u663e\u793a\u51fa\u6765\u3002<\/p>\n\n\n\n

\u3000\u3000\u5177\u4f53\u5230\u6280\u672f\u5b9e\u73b0\uff0c4G DTU\u901a\u8fc7\u5176\u5185\u7f6e\u7684GPRS\/4G\u6a21\u5757\u4e0e\u7f51\u7edc\u8fde\u63a5\uff0c\u5b9e\u73b0\u6570\u636e\u7684\u4e0a\u4f20\u3002\u8fd9\u4e9b\u8bbe\u5907\u901a\u5e38\u5305\u542b\u57fa\u4e8eARM\u6216\u5176\u4ed6\u5904\u7406\u5668\u7684\u4e3b\u63a7\u82af\u7247\u3001GPRS\/4G\u6a21\u5757\u3001SIM\u5361\u69fd\u3001\u4e32\u53e3\u63a5\u53e3\u3001\u7535\u6e90\u7ba1\u7406\u7b49\u529f\u80fd\u6a21\u5757\u3002\u5728\u6570\u636e\u4f20\u8f93\u65b9\u9762\uff0cLTE\u6280\u672f\u91c7\u7528OFDM\u8c03\u5236\u6280\u672f\uff0c\u901a\u8fc7\u5c06\u9ad8\u901f\u6570\u636e\u6d41\u5206\u914d\u5230\u82e5\u5e72\u4e2a\u76f8\u4e92\u6b63\u4ea4\u7684\u5b50\u4fe1\u9053\u4e2d\u8fdb\u884c\u4f20\u8f93\uff0c\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u6548\u7387\u3002<\/p>\n\n\n\n

\u3000\u3000\u6b64\u5916\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\uff0c\u4e00\u4e9b4G DTU\u8bbe\u5907\u652f\u6301\u6709\u7ebf\u548c4G\u94fe\u8def\u4e92\u4e3a\u5907\u4efd\u7684\u8bbe\u8ba1\u3002<\/p>\n\n\n\n

\u3000\u30004G DTU\u4e0a\u4f20\u6570\u636e\u7684\u8fc7\u7a0b\u5305\u62ec\u5728\u4e91\u5e73\u53f0\u521b\u5efa\u5b58\u50a8\u7a7a\u95f4\u3001\u914d\u7f6eDTU\u8bbe\u5907\u3001\u5229\u7528LTE\u6280\u672f\u901a\u8fc7OFDM\u8c03\u5236\u5b9e\u73b0\u9ad8\u6548\u6570\u636e\u4f20\u8f93\uff0c\u5e76\u53ef\u80fd\u6d89\u53ca\u5230\u4f7f\u7528\u7279\u5b9a\u7684\u8ba4\u8bc1\u4fe1\u606f\u4fdd\u8bc1\u6570\u636e\u5b89\u5168\u3002<\/strong>\u8fd9\u4e00\u8fc7\u7a0b\u6d89\u53ca\u5230\u786c\u4ef6\u914d\u7f6e\u3001\u8f6f\u4ef6\u8bbe\u7f6e\u4ee5\u53ca\u7f51\u7edc\u901a\u4fe1\u6280\u672f\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001 4G DTU\u8bbe\u5907\u5982\u4f55\u914d\u7f6eModBus\u6307\u4ee4\u4ee5\u8f6e\u8be2RS485\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907?<\/h2>\n\n\n\n

\u3000\u3000\u914d\u7f6e4G DTU\u8bbe\u5907\u4ee5\u8f6e\u8be2RS485\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3Modbus RTU\u534f\u8bae\u7684\u57fa\u672c\u8bbe\u7f6e\u548c\u8f6e\u8be2\u673a\u5236\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u914d\u7f6e\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

    \n
  • \u3000\u3000\u542f\u7528MODBUS RTU\u5de5\u4f5c\u6a21\u5f0f\uff1a\u786e\u4fdd4G DTU\u8bbe\u5907\u5904\u4e8eMODBUS RTU\u5de5\u4f5c\u6a21\u5f0f\uff0c\u8fd9\u6837\u8bbe\u5907\u624d\u80fd\u8bc6\u522b\u6765\u81ea\u4e2d\u5fc3\u7684MODBUS\u534f\u8bae\u547d\u4ee4\u6570\u636e\uff0c\u5e76\u6839\u636e\u547d\u4ee4\u7684\u5185\u5bb9\u8fdb\u884c\u6570\u636e\u91c7\u96c6\u6216\u8005\u7aef\u53e3\u8bbe\u7f6e\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u914d\u7f6eModbus\u603b\u7ebf\u4f20\u8f93\u901f\u7387\u548c\u5e27\u5b57\u7b26\u7ed3\u6784\uff1a\u5728CP341(\u5982\u679c\u4f7f\u7528)\u4e2d\u8bbe\u7f6eModbus Master\uff0c\u9009\u62e9\u5408\u9002\u7684\u603b\u7ebf\u4f20\u8f93\u901f\u7387\u548c\u5e27\u5b57\u7b26\u7ed3\u6784\u3002\u8fd9\u4e00\u6b65\u9aa4\u5bf9\u4e8e\u786e\u4fdd\u901a\u4fe1\u7684\u7a33\u5b9a\u6027\u548c\u6548\u7387\u81f3\u5173\u91cd\u8981\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u8bbe\u7f6eModbus\u76f8\u5173\u53c2\u6570\uff1a\u5305\u62ecModbus\u5b50\u7ad9\u5730\u5740\u3001\u5bc4\u5b58\u5668\u5730\u5740\u7b49\u3002\u8fd9\u4e9b\u53c2\u6570\u5b9a\u4e49\u4e86\u5982\u4f55\u4eceRS485\u603b\u7ebf\u4e0a\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u914d\u7f6e\u8f6e\u8be2\u5468\u671f\u548c\u4e0a\u62a5\u5468\u671f\uff1a\u8f6e\u8be2\u5468\u671f\u662f\u6307\u4e3b\u7ad9\u5411\u4ece\u7ad9\u53d1\u9001\u8bf7\u6c42\u6570\u636e\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u800c\u4e0a\u62a5\u5468\u671f\u5219\u662f\u6307\u4ece\u7ad9\u5411\u4e3b\u7ad9\u62a5\u544a\u6570\u636e\u7684\u65f6\u95f4\u95f4\u9694\u3002\u5408\u7406\u914d\u7f6e\u8fd9\u4e24\u4e2a\u5468\u671f\u53ef\u4ee5\u5e73\u8861\u6570\u636e\u66f4\u65b0\u7684\u9891\u7387\u548c\u7f51\u7edc\u8d1f\u8f7d\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u8c03\u8bd5\u6d41\u7a0b\uff1a\u5305\u62ec\u642d\u5efaTCP\u670d\u52a1\u5668\u3001\u914d\u7f6e4G DTU\u8bbe\u7f6eTCP\u670d\u52a1\u5668\u8fde\u63a5\u3001\u914d\u7f6e\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668(\u6216\u5176\u4ed6\u9700\u8981\u76d1\u63a7\u7684\u8bbe\u5907)\u3001\u8bbe\u7f6eModbus\u4e3b\u52a8\u8f6e\u8be2\u53c2\u6570\uff0c\u6700\u540e\u8fdb\u884c\u96c6\u6210\u6d4b\u8bd5\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u5b9e\u73b0\u8fdc\u7a0b\u63a7\u5236\uff1a\u901a\u8fc7Modbus485\u8f6e\u8be2\u6280\u672f\u539f\u7406\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8bbe\u5907\u4e4b\u95f4\u7684\u53cc\u5411\u63a7\u5236\uff0c\u652f\u6301\u591a\u70b9\u63a7\u5236\u548c\u591a\u70b9\u8f6e\u8be2\uff0c\u786e\u4fdd\u7f51\u7edc\u7ed3\u6784\u7b80\u5355\u4e14\u53ef\u9760\u6027\u9ad8\u3002<\/li>\n\n\n\n
  • \u3000\u3000\u65e0\u7f1d\u63a5\u5165\u4e91\u5e73\u53f0\uff1a\u5982\u679c\u9700\u8981\u5c06RS485\u8bbe\u5907\u7684\u6570\u636e\u65e0\u7f1d\u63a5\u5165\u5230\u4e91\u5e73\u53f0(\u5982\u963f\u91cc\u4e91)\uff0c\u53ef\u4ee5\u901a\u8fc74G DTU\u5c06ModBus RTU\u534f\u8bae\u81ea\u52a8\u8f6c\u6362\u6210\u4e91\u5e73\u53f0\u6240\u9700\u7684\u683c\u5f0f\uff0c\u5b9e\u73b0\u8bbe\u5907\u4e0e\u4e91\u5e73\u53f0\u7684\u65e0\u7f1d\u5bf9\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n

    \u3000\u3000\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u914d\u7f6e4G DTU\u8bbe\u5907\u4ee5\u8f6e\u8be2RS485\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\uff0c\u5e76\u6839\u636e\u9700\u8981\u5b9e\u73b0\u6570\u636e\u7684\u8fdc\u7a0b\u76d1\u63a7\u548c\u63a7\u5236\u3002<\/p>\n\n\n\n

    \u3000\u3000\u4e8c\u3001 LTE\u6280\u672f\u4e2dOFDM\u8c03\u5236\u6280\u672f\u662f\u5982\u4f55\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u6548\u7387\u7684?<\/h2>\n\n\n\n

    \u3000\u3000OFDM(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\u6280\u672f\u901a\u8fc7\u5c06\u9ad8\u901f\u7387\u7684\u4fe1\u6e90\u4fe1\u606f\u6d41\u901a\u8fc7\u4e32\u5e76\u53d8\u6362\uff0c\u53d8\u6362\u6210\u4f4e\u901f\u7387\u7684N\u8def\u5e76\u884c\u6570\u636e\u6d41\uff0c\u7136\u540e\u7528N\u4e2a\u76f8\u4e92\u6b63\u4ea4\u7684\u8f7d\u6ce2\u8fdb\u884c\u8c03\u5236\uff0c\u5c06N\u8def\u8c03\u5236\u540e\u7684\u4fe1\u53f7\u76f8\u52a0\uff0c\u4ece\u800c\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u4f20\u8f93\u3002\u5177\u4f53\u6765\u8bf4\uff0cOFDM\u6280\u672f\u7684\u57fa\u672c\u539f\u7406\u662f\u5c06\u4f20\u8f93\u4fe1\u9053\u5206\u89e3\u4e3a\u82e5\u5e72\u4e2a\u6b63\u4ea4\u7684\u5b50\u4fe1\u9053\uff0c\u5c06\u9700\u8981\u4f20\u8f93\u7684\u9ad8\u901f\u6570\u636e\u4fe1\u53f7\u8f6c\u6362\u4e3a\u5e76\u884c\u7684\u4f4e\u901f\u6570\u636e\u6d41\uff0c\u5e76\u8c03\u5236\u5230\u6bcf\u4e2a\u6b63\u4ea4\u4fe1\u9053\u7684\u5b50\u8f7d\u6ce2\u4e0a\u8fdb\u884c\u4f20\u8f93\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u53ef\u4ee5\u63d0\u9ad8\u9891\u8c31\u7684\u4f7f\u7528\u6548\u7387\uff0c\u56e0\u4e3a\u53e0\u52a0\u4f20\u8f93\u7684\u82e5\u5e72\u6b63\u4ea4\u4fe1\u53f7\u5728\u63a5\u6536\u7aef\u53ef\u4ee5\u901a\u8fc7\u4e00\u5b9a\u65b9\u5f0f\u8fdb\u884c\u89e3\u8c03\u5206\u79bb\u3002<\/p>\n\n\n\n

    \u3000\u3000\u6b64\u5916\uff0cOFDM\u6280\u672f\u8fd8\u5229\u7528\u4e86\u9891\u8c31\u7684\u6b63\u4ea4\u6027\u6765\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u4f20\u8f93\u3002\u901a\u8fc7\u5c06\u539f\u6709\u7684\u4f20\u8f93\u6570\u636e\u5e8f\u5217\u5206\u914d\u5728\u591a\u4e2a\u4e0d\u540c\u7684\u5b50\u8f7d\u6ce2\u4e0a\u5e76\u884c\u4f20\u8f93\uff0c\u5728\u901a\u4fe1\u901f\u7387\u4fdd\u6301\u4e0d\u53d8\u7684\u524d\u63d0\u4e0b\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u6548\u7387\u3002\u6bcf\u4e2a\u8f7d\u6ce2\u7684\u8c03\u5236\u901f\u7387\u5f88\u4f4e(1\/N)\uff0c\u8c03\u5236\u7b26\u53f7\u7684\u6301\u7eed\u95f4\u9694\u8fdc\u5927\u4e8e\u4fe1\u9053\u7684\u65f6\u95f4\u6269\u6563\uff0c\u8fd9\u4e5f\u6709\u52a9\u4e8e\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u548c\u6548\u7387\u3002<\/p>\n\n\n\n

    \u3000\u3000OFDM\u6280\u672f\u901a\u8fc7\u5c06\u9ad8\u901f\u6570\u636e\u4fe1\u53f7\u5206\u89e3\u4e3a\u591a\u4e2a\u4f4e\u901f\u4f46\u5e76\u884c\u7684\u6570\u636e\u6d41\uff0c\u5e76\u5229\u7528\u5b50\u8f7d\u6ce2\u7684\u6b63\u4ea4\u6027\u8fdb\u884c\u8c03\u5236\u548c\u4f20\u8f93\uff0c\u6709\u6548\u5730\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u6548\u7387\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n

    \u3000\u3000\u4e09\u3001 \u5982\u4f55\u4f7f\u7528AccessKeyID\u548cAccessKeySecret\u6784\u9020\u8ba4\u8bc1\u4fe1\u606f\u4ee5\u4fdd\u8bc14G DTU\u4e0a\u4f20\u6570\u636e\u7684\u5b89\u5168?<\/h2>\n\n\n\n

    \u3000\u3000\u8981\u4f7f\u7528AccessKeyID\u548cAccessKeySecret\u6784\u9020\u8ba4\u8bc1\u4fe1\u606f\u4ee5\u4fdd\u8bc14G DTU\u4e0a\u4f20\u6570\u636e\u7684\u5b89\u5168\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n

      \n
    • \u3000\u3000\u83b7\u53d6AccessKey\uff1a\u9996\u5148\uff0c\u9700\u8981\u4e3a\u963f\u91cc\u4e91\u8d26\u53f7(\u4e3b\u8d26\u53f7\u6216\u5b50\u8d26\u53f7)\u521b\u5efa\u4e00\u4e2a\u8bbf\u95ee\u5bc6\u94a5(AccessKey)\uff0c\u8fd9\u5305\u62ecAccessKey ID\u548cAccessKey Secret\u3002AccessKey ID\u7528\u4e8e\u6807\u8bc6\u7528\u6237\uff0c\u800cAccessKey Secret\u7528\u4e8e\u9a8c\u8bc1\u7528\u6237\u7684\u5bc6\u94a5\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u4fdd\u5bc6AccessKey Secret\uff1a\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\uff0c\u90fd\u5fc5\u987b\u786e\u4fddAccessKey Secret\u4e0d\u88ab\u6cc4\u9732\u3002\u56e0\u4e3a\u5982\u679cSecretKey\u88ab\u6076\u610f\u7b2c\u4e09\u65b9\u7a83\u53d6\uff0c\u53ef\u80fd\u5bfc\u81f4\u975e\u5e38\u4e25\u91cd\u7684\u6570\u636e\u6cc4\u6f0f\u98ce\u9669\u3002\u56e0\u6b64\uff0c\u5728\u6784\u9020\u8ba4\u8bc1\u4fe1\u606f\u65f6\uff0c\u4e0d\u5e94\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93AccessKey Secret\u3002<\/li>\n\n\n\n
    • \u3000\u3000\u6784\u9020\u8ba4\u8bc1\u4fe1\u606f\uff1a\u6839\u636e\u963f\u91cc\u4e91SDK\u7684\u6307\u5bfc\uff0c\u8ba4\u8bc1\u4fe1\u606f\u7684\u683c\u5f0f\u5e94\u4e3a\u201cAccessKeyId:Signature\u201d\u3002\u8fd9\u91cc\u7684\u201cSignature\u201d\u662f\u901a\u8fc7\u67d0\u79cd\u7b97\u6cd5\u8ba1\u7b97\u5f97\u51fa\u7684\uff0c\u8be5\u7b97\u6cd5\u9700\u8981\u4f7f\u7528AccessKey ID\u548cAccessKey Secret\u4f5c\u4e3a\u8f93\u5165\u53c2\u6570\u3002\u5177\u4f53\u7684\u7b7e\u540d\u7b97\u6cd5\u53ef\u80fd\u56e0API\u7684\u4e0d\u540c\u800c\u6709\u6240\u5dee\u5f02\uff0c\u4f46\u901a\u5e38\u6d89\u53ca\u5230\u5bf9\u8bf7\u6c42\u7684URL\u3001HTTP\u65b9\u6cd5\u3001\u8bf7\u6c42\u5934\u4ee5\u53ca\u8bf7\u6c42\u4f53\u4e2d\u7684\u7279\u5b9a\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\u548c\u7f16\u7801\u540e\uff0c\u518d\u4e0eAccessKey Secret\u7ed3\u5408\u8ba1\u7b97\u5f97\u5230\u3002<\/li>\n\n\n\n
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    • \u3000\u3000\u52a0\u5bc6\u4f20\u8f93\uff1a\u867d\u7136AccessKey ID\u53ef\u4ee5\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\uff0c\u4f46\u4e3a\u4e86\u589e\u52a0\u989d\u5916\u7684\u5b89\u5168\u5c42\uff0c\u53ef\u4ee5\u8003\u8651\u5bf9AccessKeyId\u8fdb\u884c\u52a0\u5bc6\u540e\u518d\u8fdb\u884c\u4f20\u8f93\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u53ef\u9006\u52a0\u5bc6\u7b97\u6cd5\u6765\u5b9e\u73b0\uff0c\u4ece\u800c\u5728\u4e0d\u727a\u7272\u6613\u7528\u6027\u7684\u60c5\u51b5\u4e0b\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/li>\n<\/ul>\n\n\n\n

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