{"id":97106,"date":"2024-08-23T10:27:36","date_gmt":"2024-08-23T02:27:36","guid":{"rendered":"\/\/www.viralrail.com\/?p=97106"},"modified":"2024-08-23T10:27:41","modified_gmt":"2024-08-23T02:27:41","slug":"lrzdswzc","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97106.html","title":{"rendered":"LoRa RSSI\u503c\u591a\u5c11\u4e3a\u6b63\u5e38"},"content":{"rendered":"\n<p>\u3000\u3000<strong>LoRa<\/strong>\u7684<strong>RSSI<\/strong>(\u63a5\u6536\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a)\u503c\u901a\u5e38\u7528\u4e8e\u8861\u91cf\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u5f3a\u5ea6\uff0c\u5176\u6b63\u5e38\u8303\u56f4\u4e00\u822c\u5728-120 dBm\u5230-30 dBm\u4e4b\u95f4\u3002\u5177\u4f53\u6765\u8bf4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000-120 dBm\u6216\u66f4\u4f4e\uff1a\u8868\u793a\u4fe1\u53f7\u975e\u5e38\u5f31\uff0c\u63a5\u8fd1\u63a5\u6536\u7075\u654f\u5ea6\u7684\u6781\u9650\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u6216\u901a\u4fe1\u4e0d\u7a33\u5b9a\u3002<\/li>\n\n\n\n<li>\u3000\u3000-100 dBm\u5230-70 dBm\uff1a\u8fd9\u662f\u4e00\u4e2a\u6bd4\u8f83\u5e38\u89c1\u7684\u8303\u56f4\uff0c\u4fe1\u53f7\u8d28\u91cf\u826f\u597d\uff0c\u901a\u5e38\u80fd\u591f\u5b9e\u73b0\u7a33\u5b9a\u901a\u4fe1\u3002<\/li>\n\n\n\n<li>\u3000\u3000-70 dBm\u5230-30 dBm\uff1a\u4fe1\u53f7\u975e\u5e38\u5f3a\uff0c\u4e00\u822c\u53ea\u6709\u5728\u975e\u5e38\u9760\u8fd1\u53d1\u5c04\u6e90\u65f6\u624d\u4f1a\u51fa\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cLoRa\u7684\u901a\u4fe1\u8ddd\u79bb\u548c\u73af\u5883\u56e0\u7d20(\u5982\u969c\u788d\u7269\u3001\u5e72\u6270\u7b49)\u4f1a\u5f71\u54cdRSSI\u503c\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u53ea\u8981RSSI\u503c\u5728-120 dBm\u4ee5\u4e0a\uff0c\u5e76\u4e14\u4fe1\u566a\u6bd4(SNR)\u4e5f\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u901a\u4fe1\u662f\u6b63\u5e38\u7684\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u7efc\u4e0a\u6240\u8ff0\uff0cLoRa\u7684RSSI\u503c\u5728-120 dBm\u5230-30 dBm\u4e4b\u95f4\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u6b63\u5e38\u7684\uff0c\u4f46\u5177\u4f53\u8303\u56f4\u53ef\u80fd\u56e0\u8bbe\u5907\u548c\u5e94\u7528\u573a\u666f\u800c\u5f02\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 LoRa RSSI\u503c\u4e0e\u4fe1\u53f7\u8d28\u91cf\u4e4b\u95f4\u7684\u5177\u4f53\u5173\u7cfb\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa RSSI\u503c\u4e0e\u4fe1\u53f7\u8d28\u91cf\u4e4b\u95f4\u7684\u5177\u4f53\u5173\u7cfb\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000RSSI(Received Signal Strength Indication)\u662f\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u529f\u7387\uff0c\u4ee5\u6beb\u74e6\u4e3a\u5355\u4f4d\uff0c\u5e76\u7528dBm\u8868\u793a\u3002\u8fd9\u4e2a\u503c\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u63a5\u6536\u5668\u80fd\u591f\u201c\u542c\u5230\u201d\u53d1\u9001\u8005\u4fe1\u53f7\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u3000\u3000LoRa\u7cfb\u7edf\u7684RSSI\u503c\u901a\u5e38\u5728-30 dBm\u5230-120 dBm\u4e4b\u95f4\u3002\u5176\u4e2d\uff0c-30 dBm\u8868\u793a\u975e\u5e38\u5f3a\u7684\u4fe1\u53f7\uff0c\u800c-120 dBm\u8868\u793a\u975e\u5e38\u5f31\u7684\u4fe1\u53f7\u3002RSSI\u503c\u8d8a\u63a5\u8fd1\u96f6\uff0c\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u8d8a\u597d\u3002<\/p>\n\n\n\n<p>\u3000\u3000RSSI\u503c\u8d8a\u5927\uff0c\u8868\u793a\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8d8a\u9ad8\u3002\u4f8b\u5982\uff0c\u5728\u5178\u578b\u7684LoRa\u7f51\u7edc\u4e2d\uff0c-30 dBm\u7684RSSI\u503c\u8868\u660e\u4fe1\u53f7\u5f88\u5f3a\uff0c\u800c-120 dBm\u7684RSSI\u503c\u5219\u8868\u660e\u4fe1\u53f7\u5f88\u5f31\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u7cfb\u7edf\u4e2d\uff0c\u9664\u4e86RSSI\u5916\uff0c\u8fd8\u6709\u53e6\u4e00\u4e2a\u91cd\u8981\u7684\u6307\u6807\u2014\u2014\u4fe1\u566a\u6bd4(SNR)\u3002SNR\u662f\u63a5\u6536\u4fe1\u53f7\u529f\u7387\u4e0e\u566a\u58f0\u5e95\u6c34\u5e73\u7684\u6bd4\u503c\u3002\u4e00\u822c\u6765\u8bf4\uff0cSNR\u503c\u8d8a\u5927\uff0c\u8868\u793a\u4fe1\u9053\u8d28\u91cf\u8d8a\u597d\u3002<\/p>\n\n\n\n<p>\u3000\u3000RSSI\u503c\u53ef\u4ee5\u7528\u4e8e\u8c03\u6574\u4f20\u8f93\u53c2\u6570\uff0c\u5982\u53d1\u5c04\u529f\u7387\u3001\u6269\u9891\u56e0\u5b50(SF)\u3001\u7f16\u7801\u7387(CR)\u7b49\uff0c\u4ee5\u4f18\u5316\u901a\u4fe1\u6548\u679c\u3002\u4f8b\u5982\uff0cLLCC68\u6a21\u5757\u53ef\u4ee5\u6839\u636e\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u8d28\u91cf\u4fe1\u606f\u6765\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u901a\u4fe1\u7684\u53ef\u9760\u6027\u548c\u6548\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000RSSI\u503c\u4e5f\u53ef\u4ee5\u7528\u6765\u4f30\u8ba1\u53d1\u5c04\u5668\u548c\u63a5\u6536\u5668\u4e4b\u95f4\u7684\u8ddd\u79bb\u3002\u4e00\u822c\u6765\u8bf4\uff0cRSSI\u503c\u968f\u7740\u8ddd\u79bb\u7684\u589e\u52a0\u800c\u964d\u4f4e\uff0c\u8fd9\u53ef\u4ee5\u901a\u8fc7\u5b9e\u9a8c\u6570\u636e\u5f97\u5230\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<p>\u3000\u3000LoRa RSSI\u503c\u662f\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u91cd\u8981\u6307\u6807\uff0c\u5176\u503c\u8d8a\u63a5\u8fd1\u96f6\uff0c\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u8d8a\u597d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 LoRa\u901a\u4fe1\u4e2d\uff0c\u54ea\u4e9b\u73af\u5883\u56e0\u7d20\u6700\u5e38\u5f71\u54cdRSSI\u503c?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u901a\u4fe1\u4e2d\uff0c\u5f71\u54cdRSSI\u503c\u7684\u73af\u5883\u56e0\u7d20\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u969c\u788d\u7269<\/strong>\uff1a\u5efa\u7b51\u7269\u3001\u5899\u58c1\u7b49\u76f4\u7ebf\u901a\u4fe1\u969c\u788d\u7269\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u8870\u51cf\uff0c\u4ece\u800c\u5f71\u54cdRSSI\u503c\u3002\u4f8b\u5982\uff0c\u5728\u6709\u5927\u91cf\u6811\u6728\u6216\u5efa\u7b51\u7269\u7684\u73af\u5883\u4e2d\uff0cLoRa\u7684RSSI\u4f1a\u663e\u8457\u4e0b\u964d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u591a\u5f84\u6548\u5e94<\/strong>\uff1a\u7531\u4e8e\u65e0\u7ebf\u7535\u6ce2\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u9047\u5230\u5404\u79cd\u7269\u4f53(\u5982\u9644\u8fd1\u7684\u4eba\u7c7b\u6216\u8f66\u8f86)\u65f6\u4f1a\u53d1\u751f\u53cd\u5c04\u548c\u6298\u5c04\uff0c\u5bfc\u81f4\u591a\u5f84\u6548\u5e94\uff0c\u8fdb\u800c\u5f71\u54cd\u63a5\u6536\u4fe1\u53f7\u7684\u5f3a\u5ea6\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5929\u6c14\u6761\u4ef6<\/strong>\uff1a\u826f\u597d\u7684\u5929\u6c14\u6761\u4ef6\u6709\u52a9\u4e8e\u63d0\u9ad8LoRa\u6a21\u5757\u7684\u4f20\u8f93\u8ddd\u79bb\u548cRSSI\u503c\uff0c\u800c\u6076\u52a3\u7684\u5929\u6c14\u5219\u53ef\u80fd\u964d\u4f4eRSSI\u503c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9891\u7387\u914d\u7f6e<\/strong>\uff1a\u4e0d\u540c\u5730\u533a\u7684\u9891\u6bb5\u4f7f\u7528\u60c5\u51b5\u4e5f\u4f1a\u5f71\u54cdLoRa\u7684\u4f20\u8f93\u8ddd\u79bb\u548cRSSI\u503c\u3002\u8f83\u4f4e\u7684\u9891\u7387\u901a\u5e38\u80fd\u591f\u63d0\u4f9b\u66f4\u5927\u7684\u4f20\u8f93\u8ddd\u79bb\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u53d1\u5c04\u529f\u7387\u548c\u5929\u7ebf\u589e\u76ca<\/strong>\uff1a\u8f83\u9ad8\u7684\u53d1\u5c04\u529f\u7387\u548c\u63a5\u6536\u5929\u7ebf\u589e\u76ca\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u7684\u4f20\u8f93\u8ddd\u79bb\u548cRSSI\u503c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4fe1\u9053\u5bbd\u5ea6<\/strong>\uff1a\u8f83\u5bbd\u7684\u4fe1\u9053\u5bbd\u5ea6\u4e5f\u80fd\u589e\u52a0LoRa\u65e0\u7ebf\u4f20\u8f93\u7684\u6700\u5927\u8ddd\u79bb\uff0c\u4ece\u800c\u5f71\u54cdRSSI\u503c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7f51\u7edc\u90e8\u7f72\u548c\u8282\u70b9\u4f4d\u7f6e<\/strong>\uff1a\u8282\u70b9\u7684\u4f4d\u7f6e\u548c\u65b9\u5411\u53d8\u5316\u4f1a\u5f71\u54cd\u4fe1\u53f7\u7684\u4f20\u8f93\u548c\u63a5\u6536\uff0c\u8fdb\u800c\u5f71\u54cdRSSI\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e9b\u73af\u5883\u56e0\u7d20\u5171\u540c\u4f5c\u7528\uff0c\u51b3\u5b9a\u4e86LoRa\u901a\u4fe1\u4e2d\u7684RSSI\u8868\u73b0\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 \u5982\u4f55\u51c6\u786e\u6d4b\u91cfLoRa\u8bbe\u5907\u7684RSSI\u503c?<\/h2>\n\n\n\n<p>\u3000\u3000\u51c6\u786e\u6d4b\u91cfLoRa\u8bbe\u5907\u7684RSSI\u503c\u9700\u8981\u7efc\u5408\u8003\u8651\u591a\u4e2a\u56e0\u7d20\u548c\u6b65\u9aa4\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u6d4b\u91cf\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u7406\u89e3RSSI\u503c\u7684\u5b9a\u4e49\u548c\u7c7b\u578b<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000RSSI(Received Signal Strength Indicator)\u662f\u63a5\u6536\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a\uff0c\u7528\u4e8e\u8868\u793a\u63a5\u6536\u5230\u7684\u4fe1\u53f7\u5f3a\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000PktRssiValue\u6307\u5355\u4e2a\u5305\u7684\u4fe1\u53f7\u5f3a\u5ea6\uff0c\u662f\u6536\u5305\u8fd9\u6bb5\u65f6\u95f4\u5185\u7684RSSI\u7684\u5e73\u5747\u503c;\u800cRssiValue\u6307\u5f53\u524d\u7684\u4fe1\u53f7\u5f3a\u5ea6\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u6821\u51c6RSSI\u503c<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u7531\u4e8e\u4e0d\u540c\u5c04\u9891\u524d\u7aef\u60c5\u51b5\u53ef\u80fd\u5bfc\u81f4\u6570\u503c\u5dee\u5f02\uff0c\u5efa\u8bae\u5bf9RSSI\u6570\u503c\u8fdb\u884c\u5355\u70b9\u6821\u51c6\uff0c\u4ee5\u63d0\u9ad8\u663e\u793a\u7684\u51c6\u786e\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5bf9\u4e8e\u4e2a\u522b\u53c2\u8003\u70b9\u7684\u6570\u636e\u51fa\u73b0\u8df3\u53d8\u7684\u60c5\u51b5\uff0c\u9700\u8981\u5254\u9664\u7a81\u53d8\u7684\u6570\u503c\uff0c\u7136\u540e\u518d\u6c42\u5e73\u5747\u503c\uff0c\u4ee5\u4fdd\u969cRSSI\u503c\u7684\u51c6\u786e\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u91c7\u6837\u548c\u5904\u7406\u6570\u636e<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u5c06LoRa\u901a\u4fe1\u8bbe\u5907\u653e\u7f6e\u4e8e\u4e0d\u540c\u4f4d\u7f6e\uff0c\u5206\u522b\u8bbe\u7f6eLOS(Line of Sight\uff0c\u53ef\u89c6)\u548cNLOS(Non Line of Sight\uff0c\u975e\u53ef\u89c6)\u4fe1\u9053\u6a21\u5f0f\u91c7\u96c6\u5404\u4e2a\u4f4d\u7f6e\u4e0a\u7684RSSI;\u8ba1\u7b97\u4e00\u7ec4100\u4e2a\u6837\u672c\u7684\u5e73\u5747\u503c\uff0c\u7136\u540e\u6839\u636e\u516c\u5f0f\u5bf9\u5e73\u5747RSSI\u6570\u636e\u8fdb\u884c\u5bf9\u6570\u63d2\u503c\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u77ed\u65f6\u95f4\u8fdb\u884c\u57fa\u5e26I\/Q\u652f\u8def\u529f\u7387\u79ef\u5206\u5f97\u5230RSSI\u7684\u77ac\u65f6\u503c\uff0c\u5e76\u5bf9\u77ac\u65f6\u503c\u8fdb\u884c\u5e73\u5747\u5f97\u5230RSSI\u7684\u5e73\u5747\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u6a21\u62df\u4e0e\u5b9e\u9645\u90e8\u7f72\u9a8c\u8bc1<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528\u6a21\u62df\u6a21\u578b\u548c\u771f\u5b9e\u4e16\u754c\u90e8\u7f72\u6765\u9a8c\u8bc1LoRa\u7f51\u7edc\u6027\u80fd\uff0c\u901a\u8fc7\u6bd4\u8f83\u6a21\u62df\u8f93\u51fa\u548c\u5b9e\u9645RSSI\u6570\u636e\u6765\u786e\u4fdd\u51c6\u786e\u6027\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30005.&nbsp;<strong>\u591a\u5f84\u4f20\u64ad\u7684\u5f71\u54cd<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8003\u8651\u5230\u969c\u788d\u7269\u7684\u5b58\u5728\uff0c\u65e0\u7ebf\u7535\u4fe1\u53f7\u53ef\u80fd\u4f1a\u53d7\u5230\u591a\u5f84\u4f20\u64ad\u7684\u5f71\u54cd\uff0c\u5bfc\u81f4RSSI\u503c\u5728\u8fdc\u8ddd\u79bb\u4e0b\u504f\u5dee\u8f83\u5927\u3002\u56e0\u6b64\uff0c\u5728\u6d4b\u8bd5\u65f6\u5e94\u5c3d\u91cf\u907f\u514d\u8fd9\u4e9b\u5e72\u6270\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30006.&nbsp;<strong>\u4f7f\u7528\u4e13\u4e1a\u6d4b\u8bd5\u8bbe\u5907<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u53ef\u4ee5\u91c7\u7528\u4e13\u4e1a\u7684LoRa\u6d4b\u8bd5\u8bbe\u5907\uff0c\u5982Semtech LoRa\u82af\u7247\u652f\u6301\u8bfb\u53d6\u77ac\u65f6RSSI\uff0c\u53ea\u9700\u5c06\u8bbe\u5907\u8bbe\u7f6e\u4e3aRx\u6a21\u5f0f\u5e76\u6ce8\u5165\u5df2\u77e5\u63a7\u5236\u6c34\u5e73\u7684RF\u4fe1\u53f7\u5373\u53ef\u8fdb\u884c\u57fa\u672c\u6d4b\u8bd5\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30007.&nbsp;<strong>\u7edf\u8ba1\u5206\u6790\u4e0e\u62df\u5408\u66f2\u7ebf<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u5bf9\u91c7\u96c6\u5230\u7684RSSI\u6570\u636e\u8fdb\u884c\u7edf\u8ba1\u5206\u6790\uff0c\u751f\u6210\u62df\u5408\u66f2\u7ebf\uff0c\u786e\u5b9a\u76f8\u5e94\u7684A\u548cn\u503c\uff0c\u4ee5\u4fbf\u66f4\u7cbe\u786e\u5730\u63cf\u8ff0RSSI\u7684\u53d8\u5316\u8d8b\u52bf\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 LoRa\u8bbe\u5907\u5728\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u7684\u6b63\u5e38RSSI\u503c\u8303\u56f4\u662f\u591a\u5c11?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa\u8bbe\u5907\u5728\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u7684\u6b63\u5e38RSSI\u503c\u8303\u56f4\u4f1a\u6839\u636e\u5e94\u7528\u73af\u5883\u3001\u8ddd\u79bb\u3001\u969c\u788d\u7269\u548c\u5e72\u6270\u7b49\u56e0\u7d20\u6709\u6240\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5178\u578b\u5e94\u7528\u573a\u666f\u4e0b\u7684\u53c2\u8003RSSI\u8303\u56f4\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u5ba4\u5185\u5e94\u7528\u573a\u666f<\/strong>(\u5982\u667a\u80fd\u5bb6\u5c45\u3001\u697c\u5b87\u81ea\u52a8\u5316)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>\u6b63\u5e38RSSI\u503c\u8303\u56f4<\/strong>\uff1a-70 dBm \u5230 -40 dBm<\/p>\n\n\n\n<p>\u3000\u3000\u7531\u4e8e\u5ba4\u5185\u8ddd\u79bb\u901a\u5e38\u8f83\u77ed\uff0c\u969c\u788d\u7269\u591a\uff0c\u4fe1\u53f7\u8870\u51cf\u76f8\u5bf9\u8f83\u5927\uff0c\u4f46RSSI\u503c\u4f9d\u7136\u53ef\u4ee5\u7ef4\u6301\u5728\u8f83\u9ad8\u6c34\u5e73\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u57ce\u5e02\u73af\u5883\u4e2d\u7684\u5ba4\u5916\u5e94\u7528<\/strong>(\u5982\u667a\u6167\u57ce\u5e02\u3001\u505c\u8f66\u7ba1\u7406)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>\u6b63\u5e38RSSI\u503c\u8303\u56f4<\/strong>\uff1a-100 dBm \u5230 -70 dBm<\/p>\n\n\n\n<p>\u3000\u3000\u57ce\u5e02\u73af\u5883\u4e2d\u6709\u5927\u91cf\u5efa\u7b51\u7269\u548c\u91d1\u5c5e\u8bbe\u65bd\uff0c\u53ef\u80fd\u5bfc\u81f4\u4fe1\u53f7\u53cd\u5c04\u548c\u8870\u51cf\u3002\u56e0\u6b64\uff0cRSSI\u503c\u4f1a\u6bd4\u5f00\u9614\u73af\u5883\u4f4e\u4e00\u4e9b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u90ca\u533a\u6216\u519c\u6751\u7684\u957f\u8ddd\u79bb\u5e94\u7528<\/strong>(\u5982\u519c\u4e1a\u76d1\u63a7\u3001\u73af\u5883\u76d1\u6d4b)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>\u6b63\u5e38RSSI\u503c\u8303\u56f4<\/strong>\uff1a-120 dBm \u5230 -90 dBm<\/p>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e9b\u573a\u666f\u901a\u5e38\u8986\u76d6\u8f83\u8fdc\u7684\u8ddd\u79bb\uff0c\u4e14\u5f00\u9614\u73af\u5883\u8f83\u591a\uff0c\u5c3d\u7ba1\u4fe1\u53f7\u53ef\u80fd\u51cf\u5f31\uff0c\u4f46\u7531\u4e8eLoRa\u7684\u957f\u8ddd\u79bb\u7279\u6027\uff0cRSSI\u503c\u5728\u8fd9\u4e2a\u8303\u56f4\u5185\u4f9d\u7136\u53ef\u4ee5\u5b9e\u73b0\u7a33\u5b9a\u901a\u4fe1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u5730\u4e0b\u6216\u534a\u5c01\u95ed\u73af\u5883<\/strong>(\u5982\u5730\u4e0b\u7ba1\u9053\u76d1\u6d4b\u3001\u96a7\u9053\u5e94\u7528)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000<strong>\u6b63\u5e38RSSI\u503c\u8303\u56f4<\/strong>\uff1a-110 dBm \u5230 -80 dBm<\/p>\n\n\n\n<p>\u3000\u3000\u8fd9\u4e9b\u73af\u5883\u4fe1\u53f7\u4f20\u64ad\u53d7\u9650\uff0c\u969c\u788d\u7269\u8f83\u591a\uff0c\u4fe1\u53f7\u8870\u51cf\u8f83\u5927\uff0c\u56e0\u6b64RSSI\u503c\u76f8\u5bf9\u8f83\u4f4e\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cRSSI\u503c\u53ea\u662f\u4fe1\u53f7\u8d28\u91cf\u7684\u4e00\u4e2a\u6307\u6807\uff0c\u5b9e\u9645\u901a\u4fe1\u6548\u679c\u8fd8\u9700\u8981\u7ed3\u5408\u4fe1\u566a\u6bd4(SNR)\u6765\u7efc\u5408\u8bc4\u4f30\u3002\u5728LoRa\u5e94\u7528\u4e2d\uff0c\u5373\u4f7fRSSI\u503c\u8f83\u4f4e\uff0c\u53ea\u8981SNR\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u901a\u4fe1\u4f9d\u7136\u53ef\u4ee5\u6b63\u5e38\u8fdb\u884c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001 LoRa\u4e0e\u5176\u4ed6\u65e0\u7ebf\u901a\u4fe1\u6280\u672f(\u5982Wi-Fi\u3001\u84dd\u7259)\u5728RSSI\u503c\u65b9\u9762\u7684\u6bd4\u8f83\u7ed3\u679c\u5982\u4f55?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa\u5728RSSI\u503c\u65b9\u9762\u4e0e\u5176\u4ed6\u65e0\u7ebf\u901a\u4fe1\u6280\u672f(\u5982Wi-Fi\u3001\u84dd\u7259)\u76f8\u6bd4\u5177\u6709\u663e\u8457\u4f18\u52bf\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u6bd4\u8f83\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u4f4e\u529f\u8017\u548c\u957f\u8ddd\u79bb<\/strong>\uff1aLoRa\u56e0\u5176\u4f4e\u529f\u8017\u548c\u957f\u8ddd\u79bb\u4f20\u8f93\u7279\u6027\u800c\u88ab\u5e7f\u6cdb\u4f7f\u7528\uff0c\u8fd9\u4f7f\u5f97\u5176\u5728RSSI\u503c\u4e0a\u8868\u73b0\u66f4\u4e3a\u4f18\u8d8a\u3002\u4f8b\u5982\uff0c\u5728\u57ce\u5e02\u533a\u57df\u7684\u6d4b\u8bd5\u4e2d\uff0c\u5373\u4f7f\u6709\u5efa\u7b51\u7269\u7b49\u969c\u788d\u7269\uff0cLoRa\u4fe1\u53f7\u4ecd\u80fd\u6210\u529f\u4f20\u8f93\uff0c\u800c\u5176\u4ed6\u6280\u672f\u53ef\u80fd\u65e0\u6cd5\u7a7f\u900f\u8fd9\u4e9b\u969c\u788d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u7075\u654f\u5ea6<\/strong>\uff1aLoRa\u7684\u63a5\u6536\u7075\u654f\u5ea6\u975e\u5e38\u9ad8\uff0c\u5176RSSI\u503c\u8303\u56f4\u53ef\u4ee5\u4ece-125 dBm\u5230-78 dBm\uff0c\u8fd9\u8868\u660e\u5176\u5728\u4f4e\u4fe1\u566a\u6bd4\u6761\u4ef6\u4e0b\u4ecd\u80fd\u4fdd\u6301\u8f83\u9ad8\u7684\u4fe1\u53f7\u5f3a\u5ea6\u3002\u6b64\u5916\uff0c\u968f\u7740\u6269\u9891\u56e0\u5b50(SF)\u7684\u589e\u52a0\uff0cLoRa\u7684\u63a5\u6536\u7075\u654f\u5ea6\u8fdb\u4e00\u6b65\u63d0\u9ad8\uff0c\u4f8b\u5982SF7\u65f6RSSI\u6700\u5927\u503c\u7ea6\u4e3a120 dBm\uff0c\u800cSF12\u65f6\u5219\u53ef\u8fbe\u5230\u7ea6127 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