{"id":22208,"date":"2023-09-05T08:56:05","date_gmt":"2023-09-05T00:56:05","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=22208"},"modified":"2023-10-18T09:39:06","modified_gmt":"2023-10-18T01:39:06","slug":"mtxcddshs","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/22208.html","title":{"rendered":"433MHz\u5929\u7ebf\u957f\u5ea6\u591a\u5c11\u5408\u9002\uff1f"},"content":{"rendered":"

  433MHz\u662f\u4e00\u79cd\u65e0\u7ebf\u7535\u6ce2\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u4f20\u8f93\u4fe1\u53f7\uff0c\u800c\u5176\u4f20\u8f93\u8ddd\u79bb\u4e0e\u5929\u7ebf\u957f\u5ea6\u6709\u5173\u3002\u56e0\u6b64\uff0c\u6b63\u786e\u7684\u5929\u7ebf\u957f\u5ea6\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u786e\u4fdd433MHz\u4fe1\u53f7\u53ef\u4ee5\u6709\u6548\u4f20\u8f93\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u8ba1\u7b97433MHz\u5929\u7ebf\u957f\u5ea6\uff0c\u4ee5\u53ca\u5982\u4f55\u786e\u5b9a\u6700\u5408\u9002\u7684\u5929\u7ebf\u957f\u5ea6\u3002<\/p>\n

\u8ba1\u7b97433MHz\u5929\u7ebf\u957f\u5ea6<\/h2>\n

  \u8981\u8ba1\u7b97433MHz\u5929\u7ebf\u957f\u5ea6\uff0c\u9996\u5148\u9700\u8981\u77e5\u9053\u9891\u7387\uff08f\uff09\u3001\u6ce2\u957f\uff08\u03bb\uff09\u548c\u5929\u7ebf\u957f\u5ea6\uff08L\uff09\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u6839\u636e\u6ce2\u957f\u516c\u5f0f\uff0c\u53ef\u4ee5\u5f97\u51fa\uff1a<\/p>\n

  L = \u03bb \/ 2<\/p>\n

  \u5176\u4e2d\uff0c\u03bb = c \/ f\uff0c\u5176\u4e2dc\u4e3a\u5149\u901f\uff08\u7ea63 x 108<\/sup> m\/s\uff09\uff0cf\u4e3a\u9891\u7387\uff08MHz\uff09\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5f97\u51fa\uff1a<\/p>\n

  L = c \/ (2f)<\/p>\n

  \u7531\u6b64\u53ef\u89c1\uff0c\u82e5\u8981\u8ba1\u7b97433MHz\u5929\u7ebf\u957f\u5ea6\uff0c\u53ea\u9700\u5c06433MHz\u66ff\u6362\u4e3af\uff0c\u5373\u53ef\u5f97\u51fa\u5176\u5929\u7ebf\u957f\u5ea6\uff1a<\/p>\n

  L = c \/ (2 x 433MHz) = 0.69m<\/p>\n

\u786e\u5b9a\u5408\u9002\u7684433MHz\u5929\u7ebf\u957f\u5ea6<\/h2>\n

  \u8ba1\u7b97\u51fa433MHz\u5929\u7ebf\u957f\u5ea6\u540e\uff0c\u63a5\u4e0b\u6765\u8981\u8003\u8651\u7684\u662f\u5982\u4f55\u786e\u5b9a\u6700\u5408\u9002\u7684\u5929\u7ebf\u957f\u5ea6\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u82e5\u9700\u8981\u4f20\u8f93\u8f83\u8fdc\u8ddd\u79bb\u7684\u4fe1\u53f7\uff0c\u5219\u9700\u8981\u4f7f\u7528\u66f4\u957f\u7684\u5929\u7ebf\u3002<\/p>\n

  \u6839\u636e\u7ecf\u9a8c\uff0c433MHz\u4fe1\u53f7\u6700\u4f73\u4f20\u8f93\u8ddd\u79bb\u4e3a0.5\u81f32\u7c73\uff0c\u56e0\u6b64\u6700\u5408\u9002\u7684\u5929\u7ebf\u957f\u5ea6\u4e3a0.35\u81f31.4\u7c73\u3002\u6b64\u5916\uff0c\u82e5\u9700\u8981\u4f20\u8f93\u66f4\u8fdc\u8ddd\u79bb\u7684\u4fe1\u53f7\uff0c\u5219\u53ef\u4ee5\u9002\u5f53\u589e\u52a0\u5929\u7ebf\u957f\u5ea6\uff0c\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u4f20\u8f93\u8303\u56f4\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u8ba1\u7b97433MHz\u5929\u7ebf\u957f\u5ea6\uff0c\u4ee5\u53ca\u5982\u4f55\u786e\u5b9a\u6700\u5408\u9002\u7684\u5929\u7ebf\u957f\u5ea6\u3002<\/strong>\u6839\u636e\u6ce2\u957f\u516c\u5f0f\uff0c\u53ef\u4ee5\u5f97\u51fa433MHz\u5929\u7ebf\u957f\u5ea6\u4e3a0.69\u7c73\uff0c\u800c\u6700\u4f73\u4f20\u8f93\u8ddd\u79bb\u4e3a0.5\u81f32\u7c73\uff0c\u56e0\u6b64\u6700\u5408\u9002\u7684\u5929\u7ebf\u957f\u5ea6\u4e3a0.35\u81f31.4\u7c73\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

433MHz\u662f\u4e00\u79cd\u65e0\u7ebf\u7535\u6ce2\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u4f20\u8f93\u4fe1\u53f7\uff0c\u800c\u5176\u4f20\u8f93\u8ddd\u79bb\u4e0e\u5929\u7ebf\u957f\u5ea6\u6709\u5173\u3002\u56e0\u6b64\uff0c\u6b63\u786e\u7684\u5929\u7ebf\u957f\u5ea6\u975e\u5e38\u91cd\u8981\uff0c\u4ee5\u786e\u4fdd433MHz\u4fe1\u53f7\u53ef\u4ee5\u6709\u6548\u4f20\u8f93\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u8ba1\u7b97433MH<\/p>\n","protected":false},"author":1,"featured_media":3671,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[333,218],"class_list":["post-22208","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-m-5","tag-433mhzmodule"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/22208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=22208"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/22208\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=22208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=22208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=22208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}