{"id":97285,"date":"2024-08-30T15:21:48","date_gmt":"2024-08-30T07:21:48","guid":{"rendered":"\/\/www.viralrail.com\/?p=97285"},"modified":"2024-08-30T15:21:54","modified_gmt":"2024-08-30T07:21:54","slug":"sdghdsyff","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97285.html","title":{"rendered":"SX1280\u4f4e\u529f\u8017\u7684\u4f7f\u7528\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u3000\u3000<strong>SX1280<\/strong>\u662f\u4e00\u6b3e\u4e13\u4e3a\u7269\u8054\u7f51(IoT)\u8bbe\u8ba1\u7684\u957f\u8ddd\u79bb\u3001\u4f4e\u529f\u80172.4GHz\u65e0\u7ebf\u6536\u53d1\u5668\uff0c\u5176\u6838\u5fc3\u7279\u6027\u5728\u4e8e\u5176\u5353\u8d8a\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u96c6\u6210\u7684\u65f6\u95f4\u98de\u884c(Time-of-Flight, TOF)\u529f\u80fd\u3002\u4e3a\u4e86\u5b9e\u73b0<strong>\u4f4e\u529f\u8017<\/strong>\u7684\u4f7f\u7528\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u9009\u62e9\u5408\u9002\u7684\u8c03\u5236\u65b9\u5f0f<\/strong>\uff1aSX1280\u63d0\u4f9b\u4e86\u4e09\u79cd\u8c03\u5236\u65b9\u5f0f\uff0c\u5206\u522b\u662fLoRa\u6269\u9891\u6280\u672f\u3001FLRC\u4ee5\u53ca\u4f20\u7edf\u7684FSK\u8c03\u5236\u6280\u672f\u3002LoRa\u6269\u9891\u6280\u672f\u53ef\u4ee5\u5927\u5927\u589e\u52a0\u901a\u4fe1\u8ddd\u79bb\uff0c\u540c\u65f6\u4fdd\u6301\u4f4e\u529f\u8017\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u914d\u7f6e\u4f4e\u529f\u8017\u6a21\u5f0f<\/strong>\uff1a\u5728\u6536\u6a21\u5f0f\u4e2d\uff0cSX1280\u63d0\u4f9b\u4e86\u4f4e\u529f\u8017\u6a21\u5f0f\u548c\u9ad8\u7075\u654f\u5ea6\u6a21\u5f0f\u3002\u901a\u8fc7\u914d\u7f6e\u5bc4\u5b58\u56680x891\u7684bit6:7\u6765\u63a7\u5236\uff0c\u8bbe\u7f6e\u4e3a0(00)\u7684\u65f6\u5019\u4e3a\u4f4e\u529f\u8017\u6a21\u5f0f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f7f\u7528\u7247\u4e0aRC\u9707\u8361\u5668<\/strong>\uff1a\u7247\u4e0aRC\u9707\u8361\u5668\u670964KHz\u548c13MHz\u4e24\u4e2a\u9891\u7387\uff0c64KHz\u7684\u7528\u4e8e\u4f11\u7720\u6a21\u5f0f\u65f6\u949f\uff0c\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u529f\u8017\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5229\u7528RSSI\u529f\u80fd\u8fdb\u884c\u6df1\u5ea6\u4e8c\u6b21\u5f00\u53d1<\/strong>\uff1aSX1280\u652f\u6301RSSI(\u63a5\u6536\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a)\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5b9e\u73b0\u6df1\u5ea6\u7684\u4e8c\u6b21\u5f00\u53d1\uff0c\u8fdb\u4e00\u6b65\u589e\u5f3a\u5176\u5728\u7279\u5b9a\u5e94\u7528\u573a\u666f\u4e0b\u7684\u7075\u6d3b\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f18\u5316\u5929\u7ebf\u8bbe\u8ba1<\/strong>\uff1a2.4 GHz\u9891\u6bb5\u53ef\u4ee5\u7f29\u5c0f\u5929\u7ebf\u5c3a\u5bf8\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u5316\u4e4b\u53ef\u7a7f\u6234\u4ea7\u54c1\uff0c\u540c\u65f6\u8d85\u4f4e\u7684\u7535\u6d41\u6d88\u8017\u5141\u8bb8\u4f7f\u7528\u5c0f\u578b\u7535\u6c60\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u5b9e\u73b0SX1280\u7684\u4f4e\u529f\u8017\u4f7f\u7528\uff0c\u9002\u7528\u4e8e\u667a\u80fd\u5bb6\u5c45\u3001\u5b89\u5168\u7cfb\u7edf\u3001\u5b9a\u4f4d\u8ffd\u8e2a\u3001\u65e0\u7ebf\u6d4b\u8ddd\u3001\u7a7f\u6234\u8bbe\u5907\u3001\u667a\u80fd\u624b\u73af\u4e0e\u5065\u5eb7\u7ba1\u7406\u7b49\u5e94\u7528\u573a\u666f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 SX1280 LoRa\u6269\u9891\u6280\u672f\u7684\u5177\u4f53\u5b9e\u73b0\u548c\u4f18\u5316\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u3000\u3000SX1280\u82af\u7247\u662f\u57fa\u4e8eLoRa\u6269\u9891\u6280\u672f\u7684\u5c04\u9891\u6a21\u5757\uff0c\u5176\u5177\u4f53\u5b9e\u73b0\u548c\u4f18\u5316\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000LoRa\u6269\u9891\u6280\u672f\u7684\u6838\u5fc3\u662f\u4f7f\u7528Chirp\u8c03\u5236(Chirp Spread Spectrum, CSS)\u6765\u5b9e\u73b0\u957f\u8ddd\u79bb\u3001\u4f4e\u529f\u8017\u7684\u65e0\u7ebf\u4f20\u8f93\u3002Chirp\u8c03\u5236\u901a\u8fc7\u6539\u53d8\u4fe1\u53f7\u7684\u9891\u7387\u6765\u589e\u52a0\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4ece\u800c\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u901a\u4fe1\u3002SX1280\u82af\u7247\u652f\u63012.4~2.5GHz\u7684\u8f7d\u6ce2\u9891\u7387\uff0c\u901a\u8fc7\u6269\u9891\u8c03\u5236\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u7f16\u7801\u589e\u76ca\uff0c\u56e0\u4e3a\u4fe1\u53f7\u53ef\u4ee5\u7528\u4e00\u4e2a\u8d1f\u7684\u4fe1\u566a\u6bd4\u63a5\u6536\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u6269\u9891\u56e0\u5b50(SF)\u3001\u7f16\u7801\u7387(CR)\u548c\u4fe1\u53f7\u5e26\u5bbd(BW)\u8fd9\u4e09\u4e2a\u5173\u952e\u8bbe\u8ba1\u53c2\u6570\u6765\u4f18\u5316LoRa\u8c03\u5236\u89e3\u8c03\u6280\u672f\u3002\u6269\u9891\u56e0\u5b50(SF)\u51b3\u5b9a\u4e86\u4fe1\u53f7\u7684\u5e26\u5bbd\u548c\u6297\u5e72\u6270\u80fd\u529b\uff0c\u7f16\u7801\u7387(CR)\u51b3\u5b9a\u4e86\u6570\u636e\u7684\u7ea0\u9519\u80fd\u529b\uff0c\u800c\u4fe1\u53f7\u5e26\u5bbd(BW)\u5219\u5f71\u54cd\u4fe1\u53f7\u7684\u4f20\u8f93\u901f\u7387\u548c\u8ddd\u79bb\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u4f18\u5316\u65b9\u6cd5<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u6269\u9891\u56e0\u5b50\uff08SF\uff09<\/strong>&nbsp;\uff1a\u901a\u8fc7\u8c03\u6574\u6269\u9891\u56e0\u5b50\uff0c\u53ef\u4ee5\u5e73\u8861\u4fe1\u53f7\u7684\u5e26\u5bbd\u548c\u6297\u5e72\u6270\u80fd\u529b\u3002\u8f83\u5927\u7684\u6269\u9891\u56e0\u5b50\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4f46\u4f1a\u964d\u4f4e\u4f20\u8f93\u901f\u7387\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7f16\u7801\u7387\uff08CR\uff09<\/strong>&nbsp;\uff1a\u901a\u8fc7\u8c03\u6574\u7f16\u7801\u7387\uff0c\u53ef\u4ee5\u5e73\u8861\u6570\u636e\u7684\u7ea0\u9519\u80fd\u529b\u548c\u4f20\u8f93\u901f\u7387\u3002\u8f83\u9ad8\u7684\u7f16\u7801\u7387\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u7684\u7ea0\u9519\u80fd\u529b\uff0c\u4f46\u4f1a\u964d\u4f4e\u4f20\u8f93\u901f\u7387\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4fe1\u53f7\u5e26\u5bbd\uff08BW\uff09<\/strong>&nbsp;\uff1a\u901a\u8fc7\u8c03\u6574\u4fe1\u53f7\u5e26\u5bbd\uff0c\u53ef\u4ee5\u5e73\u8861\u4fe1\u53f7\u7684\u4f20\u8f93\u901f\u7387\u548c\u8ddd\u79bb\u3002\u8f83\u5927\u7684\u4fe1\u53f7\u5e26\u5bbd\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u901f\u7387\uff0c\u4f46\u4f1a\u964d\u4f4e\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000SX1280\u82af\u7247\u5e7f\u6cdb\u5e94\u7528\u4e8e\u667a\u80fd\u5bb6\u5c45\u3001\u5b89\u5168\u7cfb\u7edf\u3001\u5b9a\u4f4d\u8ffd\u8e2a\u3001\u65e0\u7ebf\u6d4b\u8ddd\u3001\u7a7f\u6234\u8bbe\u5907\u3001\u667a\u80fd\u624b\u73af\u4e0e\u5065\u5eb7\u7ba1\u7406\u7b49\u7269\u8054\u7f51\u5e94\u7528\u3002\u5176\u957f\u8ddd\u79bb\u901a\u4fe1\u548c\u4f4e\u529f\u8017\u7684\u4f18\u52bf\u4f7f\u5176\u5728\u8fd9\u4e9b\u9886\u57df\u5177\u6709\u663e\u8457\u7684\u5e94\u7528\u4ef7\u503c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u5982\u4f55\u914d\u7f6eSX1280\u7684\u4f4e\u529f\u8017\u6a21\u5f0f\u4ee5\u6700\u5927\u5316\u8282\u80fd\u6548\u679c?<\/h2>\n\n\n\n<p>\u3000\u3000\u8981\u914d\u7f6eSX1280\u7684\u4f4e\u529f\u8017\u6a21\u5f0f\u4ee5\u6700\u5927\u5316\u8282\u80fd\u6548\u679c\uff0c\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u6b65\u9aa4\u548c\u5efa\u8bae\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u9009\u62e9\u4f4e\u529f\u8017\u6a21\u5f0f<\/strong>\uff1a\u9996\u5148\uff0c\u786e\u4fddSX1280\u82af\u7247\u5904\u4e8e\u4f4e\u529f\u8017\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u6a21\u5f0f\u53c2\u6570\u6765\u5b9e\u73b0\uff0c\u4f8b\u5982\u4f7f\u7528\u547d\u4ee4AT+LPWR=1\u6765\u5f00\u542f\u4f4e\u529f\u8017\u6a21\u5f0f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u68c0\u67e5\u5c04\u9891\u53c2\u6570\u8bbe\u7f6e<\/strong>\uff1a\u786e\u4fddSX1280\u7684\u5c04\u9891\u53c2\u6570\u8bbe\u7f6e\u6b63\u786e\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u529f\u8017\u3002\u6b63\u786e\u7684\u5c04\u9891\u53c2\u6570\u8bbe\u7f6e\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u8bbe\u5907\u7684\u80fd\u6548\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f7f\u7528\u5185\u7f6eDC-DC\u8f6c\u6362\u5668<\/strong>\uff1aSX1280\u5185\u7f6e\u4e86DC-DC\u8f6c\u6362\u5668\uff0c\u8fd9\u6709\u52a9\u4e8e\u964d\u4f4e\u80fd\u8017\u5e76\u4f18\u5316\u7535\u6e90\u7ba1\u7406\u3002\u5229\u7528\u8fd9\u4e00\u7279\u6027\u53ef\u4ee5\u8fdb\u4e00\u6b65\u51cf\u5c11\u529f\u8017\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7075\u6d3b\u914d\u7f6e\u7701\u7535\u6a21\u5f0f<\/strong>\uff1aSX1280\u652f\u6301\u591a\u79cd\u7701\u7535\u6a21\u5f0f\uff0c\u5982\u7761\u7720\u6a21\u5f0f\u3001\u5f85\u673a\u6a21\u5f0f\u548c\u529f\u7387\u8c03\u8282\u6a21\u5f0f\u7b49\u3002\u6839\u636e\u5b9e\u9645\u9700\u6c42\u7075\u6d3b\u914d\u7f6e\u8fd9\u4e9b\u6a21\u5f0f\uff0c\u53ef\u4ee5\u6709\u6548\u5ef6\u957f\u7535\u6c60\u5bff\u547d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u91cd\u65b0\u521d\u59cb\u5316\u529f\u7387\u914d\u7f6e<\/strong>\uff1a\u5728\u6062\u590dIDLE\u6a21\u5f0f\u6216\u914d\u7f6esleep\u6a21\u5f0f\u540e\uff0c\u5efa\u8bae\u91cd\u65b0\u521d\u59cb\u5316\u529f\u7387\u914d\u7f6e\uff0c\u4ee5\u786e\u4fdd\u8bbe\u5907\u5728\u4f4e\u529f\u8017\u6a21\u5f0f\u4e0b\u8fd0\u884c\u65f6\u7684\u7a33\u5b9a\u6027\u548c\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u652f\u6301\u591a\u6a21\u8c03\u5236<\/strong>\uff1aSX1280\u652f\u6301LoRa\u3001FLRC\u548c(G)FSK\u7b49\u591a\u79cd\u8c03\u5236\u65b9\u5f0f\u3002\u6839\u636e\u5177\u4f53\u5e94\u7528\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u8c03\u5236\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u4f18\u5316\u529f\u8017\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 SX1280\u7247\u4e0aRC\u9707\u8361\u5668\u5728\u4e0d\u540c\u6a21\u5f0f\u4e0b\u7684\u529f\u8017\u5bf9\u6bd4<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u5206\u6790SX1280\u7247\u4e0aRC\u9707\u8361\u5668\u5728\u4e0d\u540c\u6a21\u5f0f\u4e0b\u7684\u529f\u8017\u65f6\uff0c\u6211\u4eec\u9700\u8981\u8003\u8651\u9707\u8361\u5668\u7684\u5de5\u4f5c\u9891\u7387\u548c\u914d\u7f6e\u6a21\u5f0f\u3002SX1280\u7684\u7247\u4e0aRC\u9707\u8361\u5668\u53ef\u4ee5\u914d\u7f6e\u4e3a\u4e0d\u540c\u7684\u9891\u7387\u8f93\u51fa\uff0c\u5305\u62ec8MHz\u300116MHz\u548c24MHz\u3002\u6b64\u5916\uff0c\u8be5\u9707\u8361\u5668\u7684\u51fa\u5382\u8c03\u6821\u8bef\u5dee\u4e3a+\/-0.5%\uff0c\u57288MHz\u548c16MHz\u7684\u5168\u6e29\u533a\u53d8\u5316\u5c0f\u4e8e+\/-2%\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u529f\u8017\u901a\u5e38\u4e0e\u9707\u8361\u5668\u7684\u5de5\u4f5c\u9891\u7387\u6210\u6b63\u6bd4\uff0c\u56e0\u4e3a\u9891\u7387\u8d8a\u9ad8\uff0c\u9707\u8361\u5668\u7684\u632f\u8361\u5468\u671f\u8d8a\u77ed\uff0c\u4ece\u800c\u9700\u8981\u66f4\u591a\u7684\u80fd\u91cf\u6765\u7ef4\u6301\u632f\u8361\u3002\u56e0\u6b64\uff0c\u5728\u4f4e\u9891\u7387\u6a21\u5f0f(\u59828MHz)\u4e0b\uff0c\u9707\u8361\u5668\u7684\u529f\u8017\u76f8\u5bf9\u8f83\u4f4e;\u800c\u5728\u9ad8\u9891\u7387\u6a21\u5f0f(\u598224MHz)\u4e0b\uff0c\u529f\u8017\u5219\u76f8\u5bf9\u8f83\u9ad8\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6b64\u5916\uff0c\u9707\u8361\u5668\u7684\u529f\u8017\u8fd8\u53d7\u5230\u5176\u914d\u7f6e\u6a21\u5f0f\u7684\u5f71\u54cd\u3002\u4f8b\u5982\uff0c\u5982\u679c\u9707\u8361\u5668\u914d\u7f6e\u4e3a\u4f4e\u529f\u8017\u6a21\u5f0f\uff0c\u5176\u529f\u8017\u53ef\u80fd\u4f1a\u66f4\u4f4e\u3002\u7136\u800c\uff0c\u5177\u4f53\u7684\u529f\u8017\u6570\u636e\u9700\u8981\u6839\u636e\u5b9e\u9645\u7684\u7535\u8def\u8bbe\u8ba1\u548c\u5de5\u4f5c\u6761\u4ef6\u6765\u786e\u5b9a\u3002<\/p>\n\n\n\n<p>\u3000\u3000SX1280\u7247\u4e0aRC\u9707\u8361\u5668\u5728\u4e0d\u540c\u6a21\u5f0f\u4e0b\u7684\u529f\u8017\u4e3b\u8981\u53d6\u51b3\u4e8e\u5176\u5de5\u4f5c\u9891\u7387\u548c\u914d\u7f6e\u6a21\u5f0f\u3002\u5728\u4f4e\u9891\u7387\u6a21\u5f0f\u4e0b\uff0c\u9707\u8361\u5668\u7684\u529f\u8017\u8f83\u4f4e;\u800c\u5728\u9ad8\u9891\u7387\u6a21\u5f0f\u4e0b\uff0c\u529f\u8017\u5219\u8f83\u9ad8\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 SX1280 RSSI\u529f\u80fd\u7684\u6df1\u5ea6\u4e8c\u6b21\u5f00\u53d1\u6848\u4f8b<\/h2>\n\n\n\n<p>\u3000\u3000SX1280\u82af\u7247\u652f\u6301RSSI\u529f\u80fd\uff0c\u5e76\u4e14\u7528\u6237\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5b9e\u73b0\u6df1\u5ea6\u7684\u4e8c\u6b21\u5f00\u53d1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6df1\u5ea6\u4e8c\u6b21\u5f00\u53d1\u7684\u6848\u4f8b\uff1a<\/p>\n\n\n\n<ul 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