{"id":169212,"date":"2024-04-27T16:27:03","date_gmt":"2024-04-27T16:27:03","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/lora%e3%83%a2%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%ab\/"},"modified":"2024-05-11T15:53:43","modified_gmt":"2024-05-11T15:53:43","slug":"lora%e3%83%a2%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%ab","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/lora%e3%83%a2%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%ab\/","title":{"rendered":"LoRa\u30e2\u30b8\u30e5\u30fc\u30eb"},"content":{"rendered":"<p class=\"sidekick\">LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u9577\u8ddd\u96e2\u4f4e\u6d88\u8cbb\u96fb\u529b\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u6280\u8853\u3067\u3001IoT\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u30c7\u30fc\u30bf\u4f1d\u9001\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/05\/LoRa\u30e2\u30b8\u30e5\u30fc\u30eb.png\" alt=\"LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\"\/><\/p>\n<h2>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u305d\u306e\u57fa\u672c\u539f\u7406<\/h2>\n<p>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u9577\u8ddd\u96e2\u3067\u4f4e\u96fb\u529b\u306e\u7121\u7dda\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u6280\u8853\u3067\u3059\u3002LoRa\u3068\u306f&#8221;Long Range&#8221;\u306e\u7565\u3067\u3001\u9060\u8ddd\u96e2\u901a\u4fe1\u3092\u6307\u3057\u307e\u3059\u3002\u3053\u306e\u6280\u8853\u306f\u3001\u4e3b\u306b\u7269\u4f53\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\uff08IoT: Internet of Things\uff09\u30c7\u30d0\u30a4\u30b9\u3067\u4f7f\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u30bb\u30f3\u30b5\u30fc\u30c7\u30fc\u30bf\u306e\u53ce\u96c6\u3084\u30ea\u30e2\u30fc\u30c8\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u7528\u9014\u306a\u3069\u306b\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>LoRa\u306e\u96fb\u6c17\u7279\u6027\u3068\u901a\u4fe1\u539f\u7406<\/h2>\n<p>LoRa\u901a\u4fe1\u306f\u3001\u96fb\u78c1\u6ce2\u3092\u5229\u7528\u3057\u3066\u60c5\u5831\u3092\u4f1d\u9001\u3057\u307e\u3059\u3002\u305d\u306e\u7279\u5fb4\u3068\u3057\u3066\u3001\u975e\u5e38\u306b\u72ed\u3044\u5e2f\u57df\u5e45\u3067\u4f4e\u3044\u96fb\u529b\u3092\u4f7f\u3044\u3001\u3088\u308a\u9060\u304f\u307e\u3067\u4fe1\u53f7\u3092\u5c4a\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u6280\u8853\u306f\u3001\u30b9\u30da\u30af\u30c8\u30e9\u30e0\u62e1\u6563\u6280\u8853\u306e\u4e00\u7a2e\u3067\u3042\u308b\u30c1\u30e3\u30fc\u30d7\u30b9\u30da\u30af\u30c8\u30eb\u62e1\u6563\uff08CSS: Chirp Spread Spectrum\uff09\u3092\u4f7f\u7528\u3057\u3001\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001\u5468\u6ce2\u6570\u3092\u6642\u9593\u7d4c\u904e\u3068\u5171\u306b\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u3067\u3001\u96fb\u6ce2\u306e\u5e72\u6e09\u3092\u4f4e\u6e1b\u3055\u305b\u3001\u3088\u308a\u5b89\u5b9a\u3057\u305f\u901a\u4fe1\u3092\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u5fdc\u7528\u4f8b<\/h2>\n<ul>\n<li><strong>\u30b9\u30de\u30fc\u30c8\u8fb2\u696d:<\/strong> \u571f\u58cc\u306e\u6e7f\u5ea6\u3084\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u8fb2\u5834\u7ba1\u7406\u8005\u306b\u9001\u4fe1\u3057\u3001\u6c34\u3084\u308a\u3084\u6e29\u5ba4\u306e\u8abf\u7bc0\u3092\u6700\u9069\u5316\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8857\u706f\u7ba1\u7406:<\/strong> \u30b9\u30de\u30fc\u30c8\u30b7\u30c6\u30a3\u306e\u69cb\u60f3\u306b\u304a\u3044\u3066\u3001\u8857\u706f\u306e\u72b6\u614b\u3084\u96fb\u529b\u6d88\u8cbb\u3092\u9060\u9694\u3067\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3057\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3084\u7bc0\u96fb\u3092\u52b9\u7387\u5316\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u8cc7\u7523\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0:<\/strong> \u7269\u6d41\u696d\u754c\u3067\u30d1\u30ec\u30c3\u30c8\u3084\u5546\u54c1\u306e\u4f4d\u7f6e\u60c5\u5831\u3092\u8ffd\u8de1\u3057\u305f\u308a\u3001\u76d7\u96e3\u9632\u6b62\u306b\u3082\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>LoRa\u3068\u96fb\u78c1\u6c17\u5b66\u306e\u95a2\u4fc2<\/h2>\n<p>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u901a\u4fe1\u306b\u6210\u529f\u3057\u3066\u3044\u308b\u80cc\u666f\u306b\u306f\u3001\u96fb\u78c1\u6c17\u5b66\u306e\u57fa\u672c\u539f\u7406\u304c\u3042\u308a\u307e\u3059\u3002\u96fb\u78c1\u6ce2\u306f\u3001\u96fb\u5834\u3068\u78c1\u5834\u304c\u76f8\u4e92\u306b\u4f5c\u7528\u3057\u306a\u304c\u3089\u7a7a\u9593\u3092\u4f1d\u642c\u3059\u308b\u6ce2\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u6ce2\u306f\u3001\u30de\u30af\u30b9\u30a6\u30a7\u30eb\u65b9\u7a0b\u5f0f\u306b\u3088\u3063\u3066\u6570\u5b66\u7684\u306b\u8868\u3055\u308c\u3001\u5468\u6ce2\u6570\u3084\u6ce2\u9577\u3068\u3044\u3063\u305f\u7279\u6027\u304c\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30de\u30af\u30b9\u30a6\u30a7\u30eb\u65b9\u7a0b\u5f0f\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059:<\/p>\n<ul>\n<li>\u30ac\u30a6\u30b9\u306e\u6cd5\u5247: $\\oint \\mathbf{E} \\cdot d\\mathbf{A} = \\frac{Q}{\\varepsilon_0}$<\/li>\n<li>\u30ac\u30a6\u30b9\u306e\u78c1\u6c17\u6cd5\u5247: $\\oint \\mathbf{B} \\cdot d\\mathbf{A} = 0$<\/li>\n<li>\u30d5\u30a1\u30e9\u30c7\u30fc\u306e\u96fb\u78c1\u8a98\u5c0e\u306e\u6cd5\u5247: $\\oint \\mathbf{E} \\cdot d\\mathbf{l} = -\\frac{d\\Phi_B}{dt}$<\/li>\n<li>\u30a2\u30f3\u30da\u30fc\u30eb\uff1d\u30de\u30af\u30b9\u30a6\u30a7\u30eb\u306e\u6cd5\u5247: $\\oint \\mathbf{B} \\cdot d\\mathbf{l} = \\mu_0\\left(I + \\varepsilon_0 \\frac{d\\Phi_E}{dt}\\right)$<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u65b9\u7a0b\u5f0f\u306f\u3001LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u96fb\u78c1\u6ce2\u3092\u751f\u6210\u3057\u3001\u53d7\u4fe1\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u89e3\u6790\u3059\u308b\u305f\u3081\u306e\u57fa\u76e4\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u7279\u306b\u3001\u5897\u5e45\u3055\u308c\u305f\u96fb\u5834\u3068\u78c1\u5834\u306b\u3088\u3063\u3066\u96fb\u78c1\u6ce2\u304c\u751f\u6210\u3055\u308c\u3001\u30a2\u30f3\u30c6\u30ca\u3092\u901a\u3057\u3066\u7a7a\u9593\u3078\u3068\u653e\u5c04\u3055\u308c\u308b\u3053\u3068\u3067\u3001\u9060\u9694\u5730\u306e\u5225\u306e\u30a2\u30f3\u30c6\u30ca\u306b\u3088\u3063\u3066\u53d7\u4fe1\u3055\u308c\u305f\u5f8c\u3001\u5143\u306e\u4fe1\u53f7\u306b\u5fa9\u8abf\u3055\u308c\u308b\u6d41\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u958b\u767a\u3068\u5fdc\u7528\u306f\u3001\u96fb\u6c17\u3068\u78c1\u6c17\u306e\u539f\u7406\u3092\u57fa\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u7269\u7406\u5b66\u3068\u5de5\u5b66\u306e\u539f\u7406\u3092\u99c6\u4f7f\u3059\u308b\u3053\u3068\u3067\u3001\u4eca\u65e5\u3067\u306f\u591a\u304f\u306eIoT\u30c7\u30d0\u30a4\u30b9\u304c\u52b9\u7387\u7684\u304b\u3064\u5b89\u5b9a\u3057\u3066\u901a\u4fe1\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u304b\u3089\u3082LoRa\u6280\u8853\u306f\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\u306e\u826f\u3044\u3001\u9060\u8ddd\u96e2\u3067\u306e\u30c7\u30fc\u30bf\u4ea4\u63db\u304c\u6c42\u3081\u3089\u308c\u308b\u591a\u304f\u306e\u5206\u91ce\u3067\u305d\u306e\u4fa1\u5024\u3092\u767a\u63ee\u3057\u3066\u3044\u304f\u3053\u3068\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LoRa\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u9577\u8ddd\u96e2\u4f4e\u6d88\u8cbb\u96fb\u529b\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308b\u6280\u8853\u3067\u3001IoT\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u30c7\u30fc\u30bf\u4f1d\u9001\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":205540,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[90],"tags":[91],"class_list":["post-169212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-90","tag-91","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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