{"id":169366,"date":"2024-04-27T16:49:49","date_gmt":"2024-04-27T16:49:49","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e6%99%82%e9%96%93%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e3%83%aa%e3%83%95%e3%83%ac%e3%82%af%e3%83%88%e3%83%a1%e3%83%bc%e3%82%bf\/"},"modified":"2024-05-11T16:15:21","modified_gmt":"2024-05-11T16:15:21","slug":"%e6%99%82%e9%96%93%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e3%83%aa%e3%83%95%e3%83%ac%e3%82%af%e3%83%88%e3%83%a1%e3%83%bc%e3%82%bf","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e6%99%82%e9%96%93%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e3%83%aa%e3%83%95%e3%83%ac%e3%82%af%e3%83%88%e3%83%a1%e3%83%bc%e3%82%bf\/","title":{"rendered":"\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf"},"content":{"rendered":"<p class=\"sidekick\">\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\uff08TDR\uff09\u306f\u30b1\u30fc\u30d6\u30eb\u306e\u65ad\u7dda\u3084\u77ed\u7d61\u3092\u7279\u5b9a\u3059\u308b\u6e2c\u5b9a\u5668\u5177\u3067\u3001\u96fb\u6c17\u4fe1\u53f7\u306e\u53cd\u5c04\u5206\u6790\u306b\u3088\u308a\u969c\u5bb3\u7b87\u6240\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2024\/05\/\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf.png\" alt=\"\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\"\/><\/p>\n<h2>\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\uff08TDR\uff09\u306e\u57fa\u672c<\/h2>\n<p>\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\uff08Time-Domain Reflectometer, TDR\uff09\u306f\u96fb\u5b50\u5de5\u5b66\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u4fbf\u5229\u306a\u6e2c\u5b9a\u5668\u5177\u3067\u3001\u7279\u306b\u30b1\u30fc\u30d6\u30eb\u3084\u4f1d\u9001\u7dda\u8def\u306e\u969c\u5bb3\u7b87\u6240\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u6a5f\u5668\u306f\u96fb\u6c17\u4fe1\u53f7\u3092\u30b1\u30fc\u30d6\u30eb\u306b\u9001\u308a\u3001\u305d\u308c\u304c\u53cd\u5c04\u3057\u3066\u5e30\u3063\u3066\u304f\u308b\u69d8\u5b50\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u3067\u3001\u30b1\u30fc\u30d6\u30eb\u5185\u306e\u65ad\u7dda\u3084\u77ed\u7d61\u306a\u3069\u306e\u554f\u984c\u3092\u898b\u3064\u3051\u51fa\u3057\u307e\u3059\u3002<\/p>\n<h2>TDR\u306e\u539f\u7406<\/h2>\n<p>TDR\u306f\u30ec\u30fc\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u539f\u7406\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u9ad8\u901f\u306e\u96fb\u6c17\u30d1\u30eb\u30b9\u3092\u30b1\u30fc\u30d6\u30eb\u306b\u9001\u4fe1\u3057\u3001\u305d\u306e\u30d1\u30eb\u30b9\u304c\u4f1d\u9001\u7dda\u8def\u4e0a\u306e\u4e0d\u9023\u7d9a\u6027\u306b\u906d\u9047\u3059\u308b\u3068\u3001\u30d1\u30eb\u30b9\u306e\u4e00\u90e8\u304c\u53cd\u5c04\u3055\u308c\u307e\u3059\u3002TDR\u88c5\u7f6e\u306f\u3053\u308c\u3089\u306e\u53cd\u5c04\u30d1\u30eb\u30b9\u3092\u30ad\u30e3\u30d7\u30c1\u30e3\u3057\u3001\u305d\u306e\u6642\u9593\u3092\u6b63\u78ba\u306b\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u969c\u5bb3\u7b87\u6240\u307e\u3067\u306e\u8ddd\u96e2\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p>\u53cd\u5c04\u306e\u539f\u7406\u306f\u3001\u4ee5\u4e0b\u306e\u5f0f\u3067\u8868\u3055\u308c\u308b\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306e\u4e0d\u9023\u7d9a\u6027\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059:<\/p>\n<p>\\[ V_{\\text{ref}} = \\left( \\frac{Z_{\\text{ref}} &#8211; Z_0}{Z_{\\text{ref}} + Z_0} \\right) * V_{\\text{inc}} \\]<\/p>\n<p>\u3053\u3053\u3067\u3001<\/p>\n<ul>\n<li>\\(V_{\\text{ref}}\\)\u306f\u53cd\u5c04\u96fb\u5727,<\/li>\n<li>\\(Z_{\\text{ref}}\\)\u306f\u4e0d\u9023\u7d9a\u6027\u3067\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9,<\/li>\n<li>\\(Z_0\\)\u306f\u30b1\u30fc\u30d6\u30eb\u306e\u7279\u6027\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9,<\/li>\n<li>\\(V_{\\text{inc}}\\)\u306f\u5165\u5c04\u96fb\u5727\uff08\u9001\u4fe1\u3055\u308c\u305f\u30d1\u30eb\u30b9\uff09\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u969c\u5bb3\u7b87\u6240\u307e\u3067\u306e\u8ddd\u96e2\\( D \\)\u306f\u3001\u5165\u5c04\u30d1\u30eb\u30b9\u3068\u53cd\u5c04\u30d1\u30eb\u30b9\u306e\u9593\u306e\u6642\u9593\u5dee\\( \\Delta t \\)\u3068\u30b1\u30fc\u30d6\u30eb\u306e\u4f1d\u9001\u901f\u5ea6\\( v \\)\u3092\u7528\u3044\u3066\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059:<\/p>\n<p>\\[ D = \\frac{1}{2} * v * \\Delta t \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( \\frac{1}{2} \\)\u3092\u4e57\u3058\u308b\u7406\u7531\u306f\u3001\u30d1\u30eb\u30b9\u304c\u5f80\u5fa9\u3059\u308b\u8ddd\u96e2\u3092\u8003\u616e\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<h2>TDR\u306e\u7528\u9014<\/h2>\n<ul>\n<li><strong>\u30b1\u30fc\u30d6\u30eb\u306e\u969c\u5bb3\u7b87\u6240\u767a\u898b:<\/strong> TDR\u306f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u65ad\u7dda\u3084\u7d76\u7e01\u306e\u640d\u50b7\u3001\u63a5\u7d9a\u306e\u60aa\u3055\u306a\u3069\u3092\u691c\u51fa\u3059\u308b\u306e\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u306e\u7279\u6027\u306e\u7406\u89e3:<\/strong> \u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u7279\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u4e88\u671f\u3057\u305f\u901a\u308a\u306b\u52d5\u3044\u3066\u3044\u308b\u304b\u3092\u8a55\u4fa1\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u65b0\u65e7\u30b1\u30fc\u30d6\u30eb\u306e\u6027\u80fd\u6bd4\u8f03:<\/strong> \u65e2\u5b58\u306e\u30b1\u30fc\u30d6\u30eb\u7db2\u306e\u8a55\u4fa1\u306b\u5f79\u7acb\u3061\u3001\u65b0\u3057\u3044\u30b1\u30fc\u30d6\u30eb\u3068\u306e\u6027\u80fd\u3092\u6bd4\u8f03\u3059\u308b\u306e\u306b\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u64cd\u4f5c\u306e\u6ce8\u610f\u70b9<\/h2>\n<ul>\n<li><strong>\u89e3\u6790\u7cbe\u5ea6:<\/strong> TDR\u306e\u89e3\u6790\u7cbe\u5ea6\u306f\u3001\u4f7f\u7528\u3059\u308b\u30d1\u30eb\u30b9\u306e\u5e45\u3084\u6e2c\u5b9a\u5668\u306e\u6642\u9593\u5206\u89e3\u80fd\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u4f1d\u9001\u901f\u5ea6:<\/strong> \u30b1\u30fc\u30d6\u30eb\u306e\u4f1d\u9001\u901f\u5ea6\u306f\u305d\u306e\u6750\u8cea\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u6b63\u78ba\u306a\u8ddd\u96e2\u3092\u5f97\u308b\u306b\u306f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u7a2e\u985e\u3092\u6b63\u78ba\u306b\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30c6\u30b9\u30c8\u74b0\u5883:<\/strong> \u96fb\u78c1\u7684\u5e72\u6e09\u3084\u6e29\u5ea6\u5909\u5316\u306a\u3069\u3001\u5916\u90e8\u74b0\u5883\u3082TDR\u306e\u7cbe\u5ea6\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\u306f\u8907\u96d1\u306a\u96fb\u6c17\u5de5\u5b66\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3046\u3048\u3067\u3001\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4f1d\u9001\u7dda\u8def\u306e\u7dad\u6301\u3068\u6539\u5584\u306b\u5927\u304d\u306a\u9032\u6b69\u3092\u3082\u305f\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6642\u9593\u30c9\u30e1\u30a4\u30f3\u30ea\u30d5\u30ec\u30af\u30c8\u30e1\u30fc\u30bf\uff08TDR\uff09\u306f\u30b1\u30fc\u30d6\u30eb\u306e\u65ad\u7dda\u3084\u77ed\u7d61\u3092\u7279\u5b9a\u3059\u308b\u6e2c\u5b9a\u5668\u5177\u3067\u3001\u96fb\u6c17\u4fe1\u53f7\u306e\u53cd\u5c04\u5206\u6790\u306b\u3088\u308a\u969c\u5bb3\u7b87\u6240\u3092\u691c\u51fa\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":206910,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[90],"tags":[91],"class_list":["post-169366","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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