{"id":98515,"date":"2024-10-25T10:14:31","date_gmt":"2024-10-25T02:14:31","guid":{"rendered":"\/\/www.dealsbon.com\/?p=98515"},"modified":"2024-10-25T10:14:35","modified_gmt":"2024-10-25T02:14:35","slug":"pdfcszdslsds","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/98515.html","title":{"rendered":"433\u9891\u6bb5FSK\u4f20\u8f93\u6700\u5927\u901f\u7387\u662f\u591a\u5c11"},"content":{"rendered":"\n
\u3000\u3000\u5728433 MHz\u9891\u6bb5<\/strong>\u4f7f\u7528FSK(Frequency Shift Keying)\u8c03\u5236<\/strong>\u65f6\uff0c\u4f20\u8f93\u7684\u6700\u5927\u901f\u7387\u53d6\u51b3\u4e8e\u591a\u79cd\u56e0\u7d20\uff0c\u5305\u62ec\u4fe1\u9053\u5e26\u5bbd\u3001\u4fe1\u53f7\u8c03\u5236\u7279\u6027\u3001\u8bef\u7801\u7387\u8981\u6c42\u548c\u9891\u8c31\u4f7f\u7528\u9650\u5236\u3002\u6211\u4eec\u53ef\u4ee5\u603b\u7ed3\u51fa\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n\n\n\n \u3000\u3000FSK\u8c03\u5236\u5728433 MHz\u9891\u6bb5\u7684\u6700\u5927\u4f20\u8f93\u901f\u7387\u5728\u7406\u60f3\u6761\u4ef6\u4e0b\u53ef\u4ee5\u8fbe\u5230300 kbps\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7531\u4e8e\u4fe1\u9053\u5e26\u5bbd\u3001\u9891\u8c31\u6cd5\u89c4\u548c\u8bef\u7801\u7387\u7b49\u56e0\u7d20\u7684\u9650\u5236\uff0c\u901a\u5e38\u4f1a\u9009\u62e9\u8f83\u4f4e\u7684\u6570\u636e\u901f\u7387\u4ee5\u786e\u4fdd\u901a\u4fe1\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n \u3000\u3000433 MHz\u9891\u6bb5\u7684FSK\u8c03\u5236\u5728\u65e0\u7ebf\u901a\u4fe1\u9886\u57df\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u4f8b\u5982\uff0cnRF0433\u662f\u4e00\u6b3e\u5de5\u4f5c\u5728433 MHz ISM\u9891\u6bb5\u7684\u5355\u7247RF\u6536\u53d1\u82af\u7247\uff0c\u91c7\u7528FSK\u8c03\u5236\u548c\u89e3\u8c03\uff0c\u6570\u636e\u4f20\u8f93\u901f\u7387\u4e3a9600 b\/s\u3002\u8be5\u82af\u7247\u5177\u6709\u4f18\u826f\u7684\u9891\u7387\u7a33\u5b9a\u6027\u548c\u9ad8\u7075\u654f\u5ea6\uff0c\u9002\u7528\u4e8e\u4eea\u5668\u4eea\u8868\u6570\u636e\u91c7\u96c6\u7cfb\u7edf\u3001\u65e0\u7ebf\u6284\u8868\u7cfb\u7edf\u3001\u65e0\u7ebf\u6570\u636e\u901a\u4fe1\u7cfb\u7edf\u548c\u8ba1\u7b97\u673a\u9065\u6d4b\u9065\u63a7\u7cfb\u7edf\u7b49\u9886\u57df\u3002<\/p>\n\n\n\n \u3000\u3000\u5173\u4e8e\u6570\u636e\u901f\u7387\u7684\u9009\u62e9\uff0c\u4e0d\u540c\u7684FSK\u8c03\u5236\u6a21\u5757\u652f\u6301\u4e0d\u540c\u7684\u6570\u636e\u901f\u7387\u3002\u4f8b\u5982\uff0cBC2502C\/BC2502D\u652f\u6301\u9ad8\u8fbe50 kbps\u7684\u6570\u636e\u901f\u7387\uff0c\u800cZM7139\u6a21\u5757\u5219\u652f\u6301\u4ece2\u5230250 kbps\u7684\u6570\u636e\u901f\u7387\u3002\u9009\u62e9\u5408\u9002\u7684\u6570\u636e\u901f\u7387\u9700\u8981\u8003\u8651\u5b9e\u9645\u5e94\u7528\u9700\u6c42\uff0c\u5982\u4f20\u8f93\u8ddd\u79bb\u3001\u4fe1\u53f7\u5e72\u6270\u548c\u7cfb\u7edf\u590d\u6742\u6027\u7b49\u56e0\u7d20\u3002<\/p>\n\n\n\n \u3000\u3000\u5728\u4e0d\u540c\u5730\u533a\uff0c433 MHz\u9891\u6bb5\u7684\u9891\u8c31\u6cd5\u89c4\u5b58\u5728\u4e00\u4e9b\u5dee\u5f02\uff0c\u8fd9\u4e9b\u5dee\u5f02\u4e3b\u8981\u4f53\u73b0\u5728\u6700\u5927\u5141\u8bb8\u53d1\u5c04\u529f\u7387(ERP)\u3001\u5360\u7a7a\u6bd4(duty cycle)\u4ee5\u53ca\u662f\u5426\u5c5e\u4e8e\u5de5\u4e1a\u3001\u79d1\u5b66\u548c\u533b\u7597(ISM)\u9891\u6bb5\u7b49\u65b9\u9762\u3002<\/p>\n\n\n\n \u3000\u3000\u6839\u636eFCC\u7684\u89c4\u5b9a\uff0c433 MHz\u9891\u6bb5\u7684\u8bbe\u5907\u9700\u8981\u7b26\u5408FCC 15.231(e)\u548cRSS-210\u6807\u51c6\uff0c\u573a\u5f3a\u4e3a4400 uV\/m @ 3m\uff0c\u95ea\u70c1\u7387\u4e3a10\u79d2\uff0c\u540c\u65f6\u7b26\u5408FCC 15.240\u6807\u51c6\uff0c\u573a\u5f3a\u4e3a55.000 uV\/m @ 3m\u3002<\/p>\n\n\n\n \u3000\u3000\u5728\u8fd9\u4e9b\u5730\u533a\uff0c433 MHz\u9891\u6bb5\u5c5e\u4e8eISM\u9891\u6bb5\uff0c\u7b26\u5408EN 300 220\u6807\u51c6\u3002\u6700\u5927ERP\u4e3a10 mW@1%\u62161mW@10% duty cycle\u3002<\/p>\n\n\n\n \u3000\u3000\u5fb7\u56fd\u3001\u5965\u5730\u5229\u3001\u514b\u7f57\u5730\u4e9a\u7b49\u56fd\u4e5f\u89c4\u5b9a\u4e86\u8be5\u9891\u6bb5\u7528\u4e8eISM\u5e94\u7528\uff0c\u5e76\u8981\u6c42\u63a5\u53d7\u53ef\u80fd\u7531\u8fd9\u4e9b\u5e94\u7528\u5f15\u8d77\u7684\u6709\u5bb3\u5e72\u6270\u3002<\/p>\n\n\n\n \u3000\u3000\u4e2d\u56fd\u5b9e\u65bd\u7684SRRC\u4e0e\u6b27\u76df\u65e0\u7ebf\u7535\u6cd5\u89c4\u76f8\u5339\u914d\uff0c\u6700\u5927ERP\u4e3a10 mW\uff0c\u5360\u7528\u5e26\u5bbd\u5c0f\u4e8e400 kHz\u3002<\/p>\n\n\n\n \u3000\u3000\u65b0\u52a0\u5761\u5219\u9075\u5faaIDA TS SRD:2008\u6807\u51c6\uff0c\u540c\u6837\u6700\u5927ERP\u4e3a10 mW\u3002<\/p>\n\n\n\n \u3000\u3000\u8fd9\u4e9b\u5730\u533a\u9075\u5faaAS\/NZS 4268:2003\u6807\u51c6\u3002<\/p>\n\n\n\n \u3000\u3000\u5728\u4e00\u4e9b\u56fd\u5bb6\u548c\u5730\u533a\uff0c\u5982\u79d1\u5a01\u7279\uff0c\u8bbe\u5907\u9700\u7b26\u5408\u5f53\u5730\u7684\u5c04\u9891\u6cd5\u89c4\u8981\u6c42\uff0c\u5e76\u8bf4\u660e\u6240\u91c7\u7528\u7684\u8c03\u5236\u6280\u672f(\u5982FSK\u3001GFSK\u3001QPSK\u7b49)\uff0c\u4ee5\u786e\u4fdd\u8bbe\u5907\u7684\u5c04\u9891\u7279\u6027\u7b26\u5408\u76f8\u5173\u6807\u51c6\u3002<\/p>\n\n\n\n \u3000\u3000\u5bf9\u4e8eFSK\u8c03\u5236\u7684\u5f71\u54cd\uff0c\u867d\u7136\u5177\u4f53\u7684FSK\u8c03\u5236\u53c2\u6570\u5728\u8bc1\u636e\u4e2d\u6ca1\u6709\u8be6\u7ec6\u8bf4\u660e\uff0c\u4f46\u901a\u5e38FSK\u8c03\u5236\u65b9\u5f0f\u5728\u4e0d\u540c\u5730\u533a\u7684\u4f7f\u7528\u662f\u5141\u8bb8\u7684\uff0c\u53ea\u8981\u7b26\u5408\u5f53\u5730\u7684ERP\u548c\u5360\u7a7a\u6bd4\u9650\u5236\u3002<\/p>\n\n\n\n \u3000\u3000\u8981\u51c6\u786e\u6d4b\u91cf\u548c\u8ba1\u7b97433 MHz\u9891\u6bb5FSK\u8c03\u5236\u7684\u8bef\u7801\u7387(BER)\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u6b65\u9aa4\u548c\u65b9\u6cd5\uff1a<\/p>\n\n\n\n \u3000\u3000\u5728\u63d0\u9ad8433 MHz\u9891\u6bb5FSK\u8c03\u5236\u4f20\u8f93\u901f\u7387\u7684\u540c\u65f6\uff0c\u6709\u6548\u964d\u4f4e\u8bef\u7801\u7387\u7684\u65b9\u6cd5\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u5165\u624b\uff1a<\/p>\n\n\n\n FSK\u8c03\u5236\u5728433 MHz\u9891\u6bb5\u7684\u6700\u5927\u4f20\u8f93\u901f\u7387\u5728\u7406\u60f3\u6761\u4ef6\u4e0b\u53ef\u4ee5\u8fbe\u5230300 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\u3000\u3000\u4e00\u3001 433 MHz\u9891\u6bb5FSK\u8c03\u5236\u7684\u5b9e\u9645\u5e94\u7528\u6848\u4f8b\u548c\u6570\u636e\u901f\u7387\u9009\u62e9\u6807\u51c6<\/h2>\n\n\n\n
\u3000\u3000\u4e8c\u3001 \u5728\u4e0d\u540c\u5730\u533a\uff0c433 MHz\u9891\u6bb5\u7684\u9891\u8c31\u6cd5\u89c4\u5177\u4f53\u6709\u54ea\u4e9b\u5dee\u5f02<\/h2>\n\n\n\n
\u3000\u30001. \u5317\u7f8e\u5730\u533a<\/strong>\uff1a<\/h3>\n\n\n\n
\u3000\u30002. \u6b27\u6d32\u548c\u975e\u6d32\u5730\u533a<\/strong>\uff1a<\/h3>\n\n\n\n
\u3000\u30003. \u4e9a\u6d32\u5730\u533a<\/strong>\uff1a<\/h3>\n\n\n\n
\u3000\u30004. \u6fb3\u5927\u5229\u4e9a\/\u65b0\u897f\u5170\u5730\u533a<\/strong>\uff1a<\/h3>\n\n\n\n
\u3000\u30005. \u5168\u7403\u5176\u4ed6\u5730\u533a<\/strong>\uff1a<\/h3>\n\n\n\n
\u3000\u3000\u4e09\u3001 \u5982\u4f55\u51c6\u786e\u6d4b\u91cf\u548c\u8ba1\u7b97433 MHz\u9891\u6bb5FSK\u8c03\u5236\u7684\u8bef\u7801\u7387(BER)?<\/h2>\n\n\n\n
\n
\u3000\u3000\u56db\u3001 \u5728\u63d0\u9ad8433 MHz\u9891\u6bb5FSK\u8c03\u5236\u4f20\u8f93\u901f\u7387\u7684\u540c\u65f6\uff0c\u5982\u4f55\u6709\u6548\u964d\u4f4e\u8bef\u7801\u7387?<\/h2>\n\n\n\n
\n