{"id":20543,"date":"2023-10-04T15:29:41","date_gmt":"2023-10-04T07:29:41","guid":{"rendered":"https:\/\/www.circuspi.com\/?p=20543"},"modified":"2023-10-04T15:29:42","modified_gmt":"2023-10-04T07:29:42","slug":"smart-factory-iiot-technology-node-red-mqtt-2","status":"publish","type":"post","link":"https:\/\/www.circuspi.com\/index.php\/2023\/10\/04\/smart-factory-iiot-technology-node-red-mqtt-2\/","title":{"rendered":"\u667a\u6167\u5de5\u5ee0\u6559\u5177\u7bb1\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 &#8211; \u4f7f\u7528 Node-Red-MQTT"},"content":{"rendered":"\n<p><style>\n\/* ###\u5be6\u9a57\u4e0b\u4e00\u5217### *\/\n\na:link {color:#0695e4\n;}    \/* \u8a2d\u5b9a\u5c1a\u672a\u9ede\u95b1\u904e\u7684\u9023\u7d50\u6a23\u5f0f *\/\na:visited {color:#0695e4\n;} \/* \u8a2d\u5b9a\u904e\u53bb\u66fe\u7d93\u95b1\u904e\u7684\u9023\u7d50 *\/\na:hover {color:#0695e4\n;}   \/* \u8a2d\u5b9a\u6ed1\u9f20\u6e38\u6a19\u6307\u5728\u9023\u7d50\u4f4d\u7f6e\u4e0a\u7684\u6a23\u5f0f *\/\na:active {color:#0000BB;}  \/* \u8a2d\u5b9a\u4e0a\u9ede\u64ca\u904e\u7684\u9023\u7d50\u6a23\u5f0f *\/\n<\/style><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"526\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/10\/1000x526_1.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5177\u7bb1\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 \u2013 \u4f7f\u7528 Node-Red-MQTT\n\" class=\"wp-image-20548\"\/><\/figure>\n\n\n\n<p>\u9084\u8a18\u5f97\u5728\u4e0a\u4e00\u7bc7\u300c<a href=\"https:\/\/www.circuspi.com\/index.php\/2023\/09\/12\/smart-factory-iiot-technology-node-red\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u667a\u6167\u5de5\u5ee0\u6559\u5177\u7bb1\u7cfb\u5217(\u4e09)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 -\u4f7f\u7528 Node-Red-Dashboard<\/a>\u300d\uff0c\u5be6\u4f5c\u4e86\u4e00\u500b Node-Red-Dashboard\uff0c\u7528\u4ee5\u986f\u793a\u667a\u6167\u5de5\u5ee0\u88e1\u9762\u591a\u611f\u6e2c\u5668\u7684\u5373\u6642\u6578\u64da\u3002\u5982\u679c\u60f3\u8981\u628a\u6b64\u6578\u64da\u50b3\u8f38\u81f3\u591a\u500b\u4f7f\u7528\u8005\u7aef(\u53ef\u80fd\u662f 10 \u53f0\uff0c\u751a\u81f3\u662f 100 \u53f0\u4ee5\u4e0a\u7684\u96fb\u8166\u6216\u662f\u624b\u6a5f\u7528\u6236\u7aef)\uff0c\u8a72\u600e\u9ebc\u505a\u5462\uff1f\u672c\u7bc7\u5c07\u7e7c\u7e8c\u900f\u904e\u4e0a\u4e00\u7bc7\u7684\u7bc4\u4f8b\u7a0b\u5f0f\uff0c\u8aaa\u660e\u7269\u806f\u7db2\u5e38\u7528\u7684 MQTT \u901a\u8a0a\u5354\u5b9a\u53ca\u61c9\u7528\u5c64\u7684\u76f8\u95dc\u5be6\u52d9\u61c9\u7528\u6280\u8853\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u8a8d\u8b58 MQTT \u539f\u7406\u8207\u901a\u8a0a\u5354\u5b9a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.1 \u8a8d\u8b58 MQTT<\/h3>\n\n\n\n<p>MQTT(Message Queuing Telemetry Transport) \u8a0a\u606f\u5e8f\u5217\u9059\u6e2c\u50b3\u8f38\uff0c\u662f\u4e00\u7a2e\u57fa\u65bc\u767c\u4f48\/\u8a02\u95b1\uff08publish\/subscribe\uff09\u6a21\u5f0f\u7684\u300c\u7fbd\u91cf\u7d1a\u300d\u901a\u8a0a\u5354\u5b9a\uff0c\u8a72\u5354\u5b9a\u69cb\u5efa\u65bc TCP\/IP \u5354\u5b9a\u4e0a\uff0c\u4f5c\u70ba\u4e00\u7a2e<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u4f4e\u958b\u92b7\u3001\u4f4e\u983b\u5bec<\/mark><\/strong>\u4f54\u7528\u7684\u5373\u6642\u901a\u8a0a\u5354\u5b9a\uff0c\u4f7f\u5176\u5728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u7269\u806f\u7db2\u3001\u5c0f\u578b\u8a2d\u5099\u3001\u79fb\u52d5\u61c9\u7528<\/mark><\/strong>\u7b49\u65b9\u9762\u6709\u8f03\u5ee3\u6cdb\u7684\u61c9\u7528\u3002<\/p>\n\n\n\n<ul>\n<li>1999\u5e74 IBM \u767c\u660e<\/li>\n\n\n\n<li>2014\u5e74 MQTT 3.1 \u6b63\u5f0f\u8b8a\u6210\u958b\u653e\u7684 OASIS \u570b\u969b\u6a19\u6e96<\/li>\n\n\n\n<li>2019\u5e74 MQTT 5.0 \u6b63\u5f0f\u8b8a\u6210\u958b\u653e\u7684 OASIS \u570b\u969b\u6a19\u6e96<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">MQTT \u8a0a\u606f\u50b3\u905e\u539f\u7406<\/h4>\n\n\n\n<p>MQTT \u4f7f\u7528\u767c\u4f48(Publish) \/ \u8a02\u95b1(Subscribe)\u7684\u6d88\u606f\u50b3\u905e\u6a5f\u5236\uff0c\u4e3b\u8981\u7531\u56db\u7a2e\u5143\u4ef6\u69cb\u6210\u3002<\/p>\n\n\n\n<ul>\n<li>\u767c\u4f48\u8005 (Publisher)<\/li>\n\n\n\n<li>\u8a02\u95b1\u8005 (Subscriber)<\/li>\n\n\n\n<li>\u4e3b\u984c (Topic)<\/li>\n\n\n\n<li>\u8f49\u8a0a\u7ad9 (Broker)<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-30.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20448\" width=\"929\" height=\"512\"\/><\/figure><\/div>\n\n\n<h4 class=\"wp-block-heading\">MQTT \u7684\u8a0a\u606f\u683c\u5f0f<\/h4>\n\n\n\n<p><strong>MQTT \u8a0a\u606f\u683c\u5f0f\u7d44\u6210\u67b6\u69cb<\/strong><\/p>\n\n\n\n<ul>\n<li>Fix Header (\u56fa\u5b9a\u683c\u5f0f\u5c01\u5305)<\/li>\n\n\n\n<li>Variable Header (\u8b8a\u52d5\u683c\u5f0f\u5c01\u5305\uff0c\u5b58\u653e\u300c\u4e3b\u984c\u300d\u503c)<\/li>\n\n\n\n<li>Payload (\u8a0a\u606f\u5167\u6587\uff0c\u5b58\u653e\u300c\u6578\u64da\u300d\u503c) <\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">MQTT \u50b3\u8f38\u54c1\u8cea(QoS)<\/h4>\n\n\n\n<p>MQTT \u5b9a\u7fa9\u4e86\u4e09\u500b\u5c64\u7d1a\u7684\u50b3\u8f38\u54c1\u8cea\u8a2d\u5b9a(Quality of Service)\uff0cQoS \u7b49\u7d1a\u5f9e\u4f4e\u5230\u9ad8\uff0c\u4e0d\u50c5\u610f\u5473\u8457\u6d88\u606f\u53ef\u9760\u6027\u7684\u63d0\u5347\uff0c\u4e5f\u610f\u5473\u8457\u50b3\u8f38\u8907\u96dc\u7a0b\u5ea6\u7684\u63d0\u5347<\/p>\n\n\n\n<ul>\n<li>QoS0 (\u53ea\u767c\u4e00\u6b21)\uff0c\u53ef\u80fd\u4e1f\u5931\u6d88\u606f\u3002<\/li>\n\n\n\n<li>QoS1 (\u91cd\u767c\u4e00\u6b21)\uff0c\u4fdd\u8b49\u6536\u5230\u6d88\u606f\uff0c\u4f46\u6d88\u606f\u53ef\u80fd\u91cd\u8907\u3002<\/li>\n\n\n\n<li>QoS2 (\u4fdd\u8b49\u4e00\u6b21)\uff0c\u4fdd\u8b49\u6d88\u606f\u65e2\u4e0d\u4e1f\u5931\u4e5f\u4e0d\u91cd\u8907\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">1.2 MQTT \u512a\u9ede<\/h3>\n\n\n\n<p>MQTT \u8207 HTTP \u662f\u5169\u7a2e\u4e0d\u540c\u7684\u901a\u8a0a\u5354\u5b9a\uff0c\u7528\u65bc\u5728\u4e0d\u540c\u7684\u5834\u666f\u4e0b\u9032\u884c\u6578\u64da\u4ea4\u63db\u548c\u901a\u8a0a\u3002\u4ee5\u4e0b\u662f\u5b83\u5011\u7684\u6bd4\u8f03 :<\/p>\n\n\n\n<ul>\n<li>\u6578\u64da\u91cf\u548c\u5354\u8b70\u982d\u90e8(Header)\uff1a\n<ul>\n<li>MQTT \u662f\u4e00\u500b<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u8f15\u91cf\u7d1a\u7684\u5354\u8b70<\/mark><\/strong>\uff0c\u5354\u8b70\u982d\u90e8\u8f03\u5c0f\uff0c\u4f54\u7528\u8f03\u5c11\u7684\u6578\u64da\uff0c\u9019\u5c0d\u65bc\u8cc7\u6e90\u53d7\u9650\u7684\u8a2d\u5099\u548c\u4f4e\u983b\u5bec\u74b0\u5883\u975e\u5e38\u6709\u5229\u3002<\/li>\n\n\n\n<li>HTTP\u7684\u5354\u8b70\u982d\u90e8\u76f8\u5c0d\u8f03\u5927\uff0c\u6bcf\u6b21\u901a\u8a0a\u90fd\u9700\u8981\u651c\u5e36\u5b8c\u6574\u7684\u982d\u90e8\u4fe1\u606f\uff0c\u5927\u91cf\u6578\u64da\u50b3\u8f38\u4e0d\u5229\u4f4e\u983b\u5bec\u7684\u7db2\u8def\u74b0\u5883\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u901a\u8a0a\u65b9\u5f0f\uff1a\n<ul>\n<li>MQTT \u57fa\u65bc<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u767c\u5e03\/\u8a02\u95b1\uff08Publish\/Subscribe\uff09\u6a21\u5f0f<\/mark><\/strong>\uff0c\u53ea\u6709\u8a02\u95b1\u76f8\u61c9\u4e3b\u984c\u7684\u8a2d\u5099\u624d\u6703\u6536\u5230\u6d88\u606f\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u6e1b\u5c11\u4e86\u4e0d\u5fc5\u8981\u7684\u901a\u8a0a\u6d41\u91cf<\/mark><\/strong>\u3002<\/li>\n\n\n\n<li>HTTP \u662f\u8acb\u6c42-\u97ff\u61c9\uff08Request-Response\uff09\u6a21\u5f0f\uff0c\u6bcf\u6b21\u901a\u8a0a\u90fd\u9700\u8981\u5ba2\u6236\u7aef\u4e3b\u52d5\u767c\u9001\u8acb\u6c42\uff0c\u4f3a\u670d\u5668\u624d\u80fd\u8fd4\u56de\u97ff\u61c9\uff0c\u6703\u589e\u52a0\u901a\u8a0a\u5ef6\u9072\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u9577\u9023\u63a5\u548c\u72c0\u614b\u7ba1\u7406\uff1a\n<ul>\n<li>MQTT  <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u652f\u63f4\u9577\u9023\u63a5<\/mark><\/strong>\uff0c\u5373\u5ba2\u6236\u7aef\u548c\u4f3a\u670d\u5668\u4e4b\u9593\u7684\u9023\u63a5\u5728\u4e00\u6bb5\u6642\u9593\u5167\u4fdd\u6301\u6253\u958b\u72c0\u614b\uff0c\u9019\u6709\u52a9\u65bc\u6e1b\u5c11\u5efa\u7acb\u548c\u65b7\u958b\u9023\u63a5\u7684\u958b\u92b7\uff0c\u540c\u6642\u7bc0\u7701\u7db2\u8def\u5e36\u5bec\u3002<\/li>\n\n\n\n<li>HTTP\u901a\u5e38\u662f\u7121\u72c0\u614b\u5354\u8b70\uff0c\u6bcf\u6b21\u8acb\u6c42\u548c\u97ff\u61c9\u90fd\u662f\u7368\u7acb\u7684\uff0c\u9700\u8981\u5728\u6bcf\u6b21\u901a\u8a0a\u4e2d\u91cd\u65b0\u5efa\u7acb\u9023\u63a5\uff0c\u9019\u53ef\u80fd\u6703\u589e\u52a0\u6548\u80fd\u958b\u92b7\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u983b\u5bec\u548c\u6548\u80fd\uff1a \n<ul>\n<li>\u7531\u65bc MQTT \u7684\u8f15\u91cf\u7d1a\u7279\u6027\u548c\u6709\u6548\u7684\u901a\u8a0a\u6a21\u5f0f\uff0c\u5b83\u5728\u8cc7\u6e90\u53d7\u9650\u7684\u8a2d\u5099\u548c\u7db2\u8def\u74b0\u5883\u4e2d\u8868\u73fe\u51fa\u8272\uff0c\u5c24\u5176\u662f\u5728\u5927\u91cf\u8a2d\u5099\u4e4b\u9593\u9700\u8981\u5feb\u901f\u3001\u4f4e\u5ef6\u9072\u901a\u8a0a\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n\n\n\n<li>HTTP \u5728\u4e00\u822c\u4e92\u806f\u7db2\u61c9\u7528\u4e2d\u8868\u73fe\u826f\u597d\uff0c\u4f46\u5728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u8cc7\u6e90\u53d7\u9650\u7684\u5d4c\u5165\u5f0f\u8a2d\u5099\u6216\u4f4e\u983b\u5bec\u8981\u6c42\u7684\u7269\u806f\u7db2\u61c9\u7528\u4e2d\u4e0d\u5982 MQTT<\/mark><\/strong>\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u5b89\u88dd\u8207\u8a2d\u7f6e MQTT Broker<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 Mosquitto \u4ecb\u7d39<\/h3>\n\n\n\n<p>Eclipse Mosquitto \u662f\u4e00\u500b\u958b\u6e90\u7684<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u8f15\u91cf\u7d1a MQTT\u6d88\u606f\u4ee3\u7406(Broker)<\/mark><\/strong>\uff0c\u5be6\u73fe <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">MQTT \u5354\u8b70\u7248\u672c 5.0\u30013.1.1 \u548c 3.1<\/mark><\/strong>\uff0c\u63d0\u4f9b\u53ef\u9760\u7684\u6d88\u606f\u50b3\u905e\uff0c\u4e26\u5141\u8a31\u88dd\u7f6e\u9593\u7684\u9ad8\u6548\u901a\u4fe1\uff0c\u9069\u7528\u65bc\u4f4e\u529f\u8017\u55ae\u677f\u96fb\u8166(SBC)\u8207\u5927\u578b\u670d\u52d9\u5668(Server)\u7b49\u6240\u6709\u8a2d\u5099\u3002Mosquitto\u6613\u65bc\u914d\u7f6e\u548c\u90e8\u7f72\uff0c\u9069\u7528\u65bc\u591a\u7a2e\u5e73\u53f0(Linux\u3001Windowns)\uff0c\u4e26\u63d0\u4f9b\u8c50\u5bcc\u7684\u529f\u80fd\uff0c\u4f7f\u5176\u6210\u70ba\u9023\u63a5\u7269\u806f\u7db2\u8a2d\u5099\u7684\u7406\u60f3\u9078\u64c7\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-31.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20449\" width=\"660\" height=\"132\"\/><figcaption class=\"wp-element-caption\">\u958b\u6e90\u5c08\u6848<a href=\"https:\/\/github.com\/eclipse\/mosquitto\" target=\"_blank\" rel=\"noreferrer noopener\">GitHub\u9023\u7d50<\/a><\/figcaption><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">2.2 Mosquitto \u5b89\u88dd<\/h3>\n\n\n\n<ul>\n<li>\u65bcMosquitto\u5b98\u7db2<a rel=\"noreferrer noopener\" href=\"https:\/\/mosquitto.org\/download\/\" target=\"_blank\">\u4e0b\u8f09\u9023\u7d50<\/a>\uff0c\u4e26\u6839\u64da\u672c\u5730\u7aef\u7684\u96fb\u8166\u9078\u64c7\u7cfb\u7d71\uff0c\u9078\u64c7\u5c0d\u61c9\u7684\u7cfb\u7d71\uff0c\u4e0b\u8f09\u7a0b\u5f0f\u4e26\u4e00\u9375\u5b89\u88dd\u3002<br>\u5728\u6a39\u8393\u6d3e\u7684 Shell \u88e1\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 apt \u6307\u4ee4\u76f4\u63a5\u5b89\u88dd mosquitto \u5957\u4ef6\u548c mosquitto-clients \u5957\u4ef6\uff0c\u65b9\u4fbf\u4e4b\u5f8c\u7684\u529f\u80fd\u6e2c\u8a66\u3002 sudo apt update sudo apt upgrade apt-get install mosquitto mosquitto-clients <\/li>\n\n\n\n<li>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0c\u8f38\u5165\u4e0b\u5217\u6307\u4ee4\uff0c\u6aa2\u67e5\u4e00\u4e0b\u76ee\u524d mosquitto \u5b89\u88dd\u7248\u672c\u3002<br>\u5728\u7d42\u7aef\u6a5f\u4e0b\u6b64\u6307\u4ee4 : mosquitto -v\u3002\u76ee\u524d\u7cfb\u7d71\u4e0a\u5b89\u88dd\u7684\u7248\u672c\u70ba 1.5.7\uff0c\u76e3\u807d\u57e0\u53e3\u70ba 1883\u3002<br><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-32.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20450\" width=\"770\" height=\"84\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">2.3 Mosquitto \u555f\u52d5<\/h3>\n\n\n\n<ul>\n<li>\u5b89\u88dd\u5b8c\u6210\u5f8c\uff0cmosquitto \u670d\u52d9\u6703\u81ea\u52d5\u555f\u52d5\uff0c\u53ef\u4ee5\u4f7f\u7528 service \u6307\u4ee4\u78ba\u8a8d mosquitto \u76ee\u524d\u904b\u884c\u72c0\u614b\u3002<br>service mosquitto status<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-33.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20451\" width=\"770\" height=\"171\"\/><\/figure><\/div>\n\n\n<p>\u7576\u770b\u5230\u57f7\u884c\u7d50\u679c\u6709active(running)\uff0c\u5247\u8868\u793a\u76ee\u524dmosquitto\u6b63\u5e38\u904b\u884c\u4e2d\uff0c\u63a5\u8457\u5c31\u53ef\u4ee5\u958b\u59cb\u4f7f\u7528MQTT Broker\u7684\u529f\u80fd\u4e86\u3002\u82e5\u8981\u7d50\u675fmosquitto\u7a0b\u5f0f\uff0c\u53ef\u4ee5\u6309\u4e0b <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">CTRL+C<\/mark><\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u5b89\u88dd MQTT Subscriber<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 MQTT X \u4ecb\u7d39\u8207\u4e0b\u8f09<\/h3>\n\n\n\n<p>\u96fb\u8166\u7aef MQTT \u8a02\u95b1\u8005\uff0c\u6211\u5011\u4f7f\u7528 MQTT X\uff0c\u5b83\u662f EMQ \u958b\u6e90\u7684\u4e00\u6b3e\u7684\u8de8\u5e73\u81fa MQTT5.0 \u684c\u9762\u7528\u6236\u7aef\uff0c\u652f\u63f4 macOS, Linux, Windows\u3002MQTT X \u7684 UI \u63a1\u7528\u4e86\u804a\u5929\u4ecb\u9762\u5f62\u5f0f\uff0c\u7c21\u5316\u4e86\u9801\u9762\u64cd\u4f5c\u908f\u8f2f\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u5feb\u901f\u5275\u5efa\u9023\u63a5\uff0c\u5141\u8a31\u4fdd\u5b58\u591a\u500b\u7528\u6236\u7aef\uff0c\u65b9\u4fbf\u7528\u6236\u5feb\u901f\u6e2c\u8a66 MQTT\/MQTTS \u9023\u63a5\uff0c\u53ca MQTT \u6d88\u606f\u7684\u8a02\u95b1\u548c\u767c\u4f48\u3002<\/p>\n\n\n\n<p>\u4e0b\u8f09\u7db2\u5740\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/mqttx.app\/\" target=\"_blank\">https:\/\/mqttx.app\/<\/a><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-34.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20452\" width=\"519\" height=\"282\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001MQTT \u61c9\u7528\u7bc4\u4f8b\u5be6\u4f5c<\/h2>\n\n\n\n<p>\u6b64\u7bc4\u4f8b\u7a0b\u5f0f\u5c07\u793a\u7bc4\u5982\u4f55\u5efa\u7acb MQTT \u901a\u8a0a\u5354\u5b9a\u7684\u7269\u806f\u7db2\u7a0b\u5f0f\uff0c\u5c07 Node-RED\u3001Mosquitto \u548cMQTT X \u4f5c\u4e00\u5b8c\u6574\u7684\u7cfb\u7d71\u6574\u5408\uff0c\u8b93\u60a8\u66f4\u6df1\u5165\u4e86\u89e3\u7269\u806f\u7db2\u6280\u8853\u7684\u5be6\u969b\u61c9\u7528\u65b9\u5f0f\u548c\u512a\u52e2\u3002<\/p>\n\n\n\n<ol>\n<li>\u667a\u6167\u5de5\u5ee0\u7aef\uff0c\u900f\u904e Node-RED \u767c\u5e03\u548c\u8a02\u95b1 MQTT \u4e3b\u984c\uff0c\u4e26\u9032\u884c\u6578\u64da\u53ef\u8996\u5316\u5206\u6790\u3002<\/li>\n\n\n\n<li>MQTT X \u5ba2\u6236\u7aef\uff0c\u767c\u5e03\u548c\u8a02\u95b1 MQTT \u4e3b\u984c\uff0c\u8207\u667a\u6167\u5de5\u5ee0\u7aef\u4ea4\u63db\u6578\u64da\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 \u667a\u6167\u5de5\u5ee0\u7aef &#8211; \u767c\u5e03\u8207\u8a02\u95b1\u4e3b\u984c<\/h3>\n\n\n\n<p>\u900f\u904e Node-RED \u767c\u5e03\u4e3b\u984c(\u611f\u6e2c\u5668\u6578\u64da)\u4e26\u9032\u884c\u6578\u64da\u53ef\u8996\u5316\u5206\u6790\uff0c\u4e26\u8a02\u95b1\u4f86\u81ea MQTT X \u5ba2\u6236\u7aef\u7684\u71c8\u865f\u4e3b\u984c\u3002\u5c07\u900f\u904e\u4e0b\u5217\u6b65\u9a5f\uff0c\u4f9d\u5e8f\u8aaa\u660e\u5be6\u4f5c\u5167\u5bb9\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Node-RED\u7a0b\u5f0f\u958b\u767c<\/h4>\n\n\n\n<ul>\n<li>\u6253\u958b\u700f\u89bd\u5668\u9801\u9762\u4e26\u8f38\u5165 : <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">127.0.0.1:1880<\/mark><\/strong>\uff0c\u9032\u5165 Node_RED \u7de8\u8f2f\u9801\u9762\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1630\" height=\"864\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-35.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20453\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u5f9e <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">network \u5de5\u5177\u6b04<\/mark><\/strong>\u4e2d\uff0c\u62d6\u62c9\u4e00\u500b mqtt in \u548c\u4e5d\u500b mqtt out \u7bc0\u9ede\uff0c\u9032\u5165\u7a0b\u5f0f\u6d41\u7a0b\u7de8\u8f2f\u5340\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-36.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20454\" width=\"282\" height=\"105\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u7de8\u8f2f <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">mqtt in\u7bc0\u9ede<\/mark><\/strong>\uff0c\u9ede\u9078\u300c\u670d\u52d9\u7aef\u300d\u6b04\u4f4d\u53f3\u908a\u7684\u925b\u7b46\uff0c\u7de8\u8f2f\u300cmqtt-broker\u300d\u7bc0\u9ede\uff0c\u670d\u52d9\u7aef\u5167\u5bb9\u6539\u6210\u3010node-red@localhost\u3011\u6216\u662f\u667a\u6167\u5de5\u5ee0IP\u4f4d\u5740\uff0c\u57e0\u5167\u5bb9\u6539\u6210\u30101883\u3011\uff0cProtocol\u5167\u5bb9\u6539\u6210\u3010MQTT V3.1.1\u3011\uff0c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-37.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20455\" width=\"430\" height=\"340\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u4fee\u6539\u5b8c\u6210\u5f8c\uff0c\u670d\u52d9\u7aef\u8b8a\u6210\u3010node-red@localhost:1883\u3011\u6216\u662f\u667a\u6167\u5de5\u5ee0 IP \u4f4d\u5740\uff0c\u4e3b\u984c\u6539\u6210\u3010outTopic\u3011\uff0cQoS \u6539\u6210\u30102\u3011\uff0c\u540d\u7a31\u6539\u6210 mqtt in\uff0c\u7d50\u679c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-38.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20456\" width=\"438\" height=\"321\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u62d6\u62c9\u4e26\u7de8\u8f2f\u4e00\u500b\u300ctext\u300d\u7bc0\u9ede\uff0cLabel \u5167\u5bb9\u6539\u6210\u3010\u63a5\u6536\u5230\u7684\u5b57\u4e32\u3011\uff0cValue format \u5167\u5bb9\u6539\u6210\u3010{{msg.payload}}\u3011\uff0c\u7d50\u679c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-39.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20457\" width=\"446\" height=\"514\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u62d6\u62c9\u4e26\u7de8\u8f2f\u300cbutton\u300d\u7bc0\u9ede\uff0cLabel\u5167\u5bb9\u6539\u6210\u3010LED_ON\u3011\uff0cPayload\u5167\u5bb9\u6539\u6210\u30101\u3011\uff0c\u7d50\u679c\u5982\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-40.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20458\" width=\"450\" height=\"638\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u62d6\u62c9\u4e26\u7de8\u8f2f\u7b2c\u4e8c\u500b\u300cbutton\u300d\u7bc0\u9ede\uff0cLabel \u5167\u5bb9\u6539\u6210\u3010LED_OFF\u3011\uff0cPayload \u5167\u5bb9\u6539\u6210\u30100\u3011\uff0cColor\u5167\u5bb9\u6539\u6210\u3010black\u3011\uff0c\u7d50\u679c\u5982\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-41.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20459\" width=\"384\" height=\"548\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u7de8\u8f2f\u7b2c\u4e00\u500b\u300cmqtt out\u300d\u7bc0\u9ede\uff0c\u670d\u52d9\u7aef\u5167\u5bb9\u6539\u6210\u3010node-red@localhost:1883\u3011\u6216\u662f\u667a\u6167\u5de5\u5ee0 IP \u4f4d\u5740\uff0c\u4e3b\u984c\u5167\u5bb9\u6539\u6210\u3010inTopic\/Led\u3011\uff0c\u540d\u7a31\u5167\u5bb9\u6539\u6210\u3010mqtt_Led\u3011\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-42.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20460\" width=\"527\" height=\"419\"\/><\/figure><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-43.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20461\" width=\"522\" height=\"397\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u4f9d\u5e8f\u7de8\u8f2f\u5176\u9918\u516b\u500b\u300c<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">mqtt out<\/mark><\/strong>\u300d\u7bc0\u9ede\uff0c\u4e3b\u984c\u5167\u5bb9\u6539\u6210\u3010inTopic\/Temp\u3011\u3001\u3010inTopic\/Humid\u3011\u3001\u3010inTopic\/Light\u3011\u3001\u3010inTopic\/Flame\u3011\u3001\u3010inTopic\/Mq4\u3011\u3001\u3010inTopic\/Btn\u3011\u3001\u3010inTopic\/Knob\u3011\u53ca\u3010inTopic\/Ird\u3011\u3002<\/li>\n\n\n\n<li>\u900f\u904e\u524d\u9762\u7684\u6b65\u9a5f\uff0c\u5df2\u7d93\u5b8c\u6210\u6240\u6709\u7bc0\u9ede\u7684\u5167\u5bb9\u4fee\u6b63\u3002\u73fe\u5728\u53ea\u9700\u628a\u4fee\u6539\u904e\u5f8c\u7684\u7bc0\u9ede\uff0c\u6b63\u78ba\u7684\u76f8\u9023\u5728\u4e00\u8d77\u5373\u53ef\uff0c\u7d50\u679c\u5982\u5716\u6240\u793a\u3002\u9ede\u9078\u53f3\u4e0a\u89d2\u7684\u300c\u90e8\u7f72\u300d\u6309\u9215\uff0c\u5373\u53ef\u5b8c\u6210MQTT\u901a\u8a0a\u5354\u5b9a\u7684\u9023\u7dda\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-44.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20462\" width=\"815\" height=\"521\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u90e8\u7f72\u6210\u529f\u5f8c\uff0cmqtt in\u7bc0\u9ede\u4e0b\u65b9\u51fa\u73fe\u7da0\u8272\u71c8\u865f\uff0c\u4ee3\u8868MQTT\u8a2d\u5b9a\u6210\u529f\u3002\u82e5mqtt in\u7bc0\u9ede\u6c92\u6709\u51fa\u73fe\u3010<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-green-cyan-color\">\u5df2\u9023\u63a5<\/mark>\u3011<\/strong>\uff0c\u8acb\u518d\u6b21\u6aa2\u67e5\u6a39\u8393\u6d3e\u7db2\u8def\u901a\u8a0a\u662f\u5426\u6b63\u5e38\uff0c\u7db2\u8def\u8a2d\u5b9a\u6216\u662fmqtt broker\u7db2\u8def\u8a2d\u5b9a\u662f\u5426\u6b63\u78ba\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Node-RED \u7a0b\u5f0f\u6e2c\u8a66<\/h4>\n\n\n\n<p>\u6253\u958b\u700f\u89bd\u5668\u4e26\u8f38\u5165 <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">http:\/\/127.0.0.1:1880\/ui\/<\/mark><\/strong>\uff0c\u89c0\u5bdf Node-RED Dashboard\u4e0a\u611f\u6e2c\u5668\u6578\u503c\u7684\u8b8a\u5316\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-45.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20463\" width=\"686\" height=\"247\"\/><\/figure><\/div>\n\n\n<h4 class=\"wp-block-heading\">Node-RED \u7a0b\u5f0f\u5099\u4efd<\/h4>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u822c\u60c5\u6cc1\u4e0b\u5982\u4f55\u9032\u884cNode-RED\u5de5\u4f5c\u6d41\u7a0b\u7684\u5099\u4efd\u7684\u6b65\u9a5f\uff1a\u5728Node-RED\u4e2d\uff0c\u7a0b\u5f0f\u662f\u4ee5\u5de5\u4f5c\u6d41\u7a0b\uff08flows\uff09\u7684\u5f62\u5f0f\u5b58\u5728\u7684\u3002\u8981\u5099\u4efd\u5de5\u4f5c\u6d41\u7a0b\uff0c\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n\n\n\n<ul>\n<li>\u5728Node-RED\u7de8\u8f2f\u5668\u4e2d\uff0c\u9ede\u64ca\u53f3\u4e0a\u89d2\u7684\u9078\u55ae\u5716\u793a\uff08\u4e09\u689d\u6a6b\u7dda\uff09\u3002<\/li>\n\n\n\n<li>\u9078\u64c7\u300cExport\u300d\uff08\u532f\u51fa\uff09\u9078\u9805\u3002<\/li>\n\n\n\n<li>\u9078\u64c7\u8981\u532f\u51fa\u7684\u5de5\u4f5c\u6d41\u7a0b\uff0c\u60a8\u53ef\u4ee5\u9078\u64c7\u5168\u90e8\u5de5\u4f5c\u6d41\u7a0b\u6216\u50c5\u9078\u64c7\u7279\u5b9a\u7684\u5de5\u4f5c\u6d41\u7a0b\u3002<\/li>\n\n\n\n<li>\u9ede\u64ca\u300cDownload\u300d\uff08\u4e0b\u8f09\uff09\u6309\u9215\u4f86\u4fdd\u5b58\u5de5\u4f5c\u6d41\u7a0b\u7684 JSON \u6587\u4ef6\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-46.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20464\" width=\"224\" height=\"473\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">4.2 MQTT X \u5ba2\u6236\u7aef &#8211; \u767c\u5e03\u8207\u8a02\u95b1\u4e3b\u984c<\/h3>\n\n\n\n<p>\u900f\u904e MQTT X \u5efa\u7acb\u96fb\u8166\u5ba2\u6236\u7aef\u8207\u667a\u6167\u5de5\u5ee0\u4e4b\u9593\u7684 MQTT \u901a\u8a0a\u9023\u7dda\u6e2c\u8a66\u3002\u5c07\u900f\u904e\u4e0b\u5217\u6b65\u9a5f\uff0c\u4f9d\u5e8f\u8aaa\u660e\u5be6\u4f5c\u5167\u5bb9\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">MQTT X \u9023\u7dda\u8a2d\u7f6e<\/h4>\n\n\n\n<ul>\n<li>\u5efa\u7acb\u5feb\u901f\u9023\u63a5\uff0c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-47.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20465\" width=\"575\" height=\"421\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u9023\u63a5\u8a2d\u5b9a\uff0cName \u6b04\u4f4d\u3010\u4f7f\u7528\u8005\u81ea\u884c\u8a2d\u5b9a\u3011\uff0cClient ID \u6b04\u4f4d\u3010\u7cfb\u7d71\u81ea\u52d5\u7522\u751f\u3011\uff0cHost \u6b04\u4f4d\u586b\u5165\u3010\u76ee\u524d\u667a\u6167\u5de5\u5ee0\u7684 IP \u4f4d\u5740\u3011\uff0cPort \u6b04\u4f4d\u586b\u5165\u30101883\u3011\uff0c\u5176\u4ed6\u8a2d\u5b9a\u63a1\u9810\u8a2d\u503c\u5373\u53ef\uff0c\u7d50\u679c\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-48.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20466\" width=\"576\" height=\"589\"\/><\/figure><\/div>\n\n\n<h4 class=\"wp-block-heading\">MQTT X \u6e2c\u8a66<\/h4>\n\n\n\n<ul>\n<li>\u7576\u9023\u7dda\u81f3\u667a\u6167\u5de5\u5ee0\u7684 MQTT Broker \u6210\u529f\u5f8c\uff0c\u63a5\u8457\u8a2d\u5b9a MQTT X \u7684\u8a02\u95b1\u4e3b\u984c(Topic)\uff0c\u958b\u59cb\u63a5\u6536\u4f86\u81ea\u667a\u6167\u5de5\u5ee0\u7aef\u7684\u611f\u6e2c\u5668\u8a0a\u606f(Message)\u3002\u8a02\u95b1\u667a\u6167\u5de5\u5ee0\u7aef\u6eab\/\u6ebc\u5ea6\u611f\u6e2c\u5668\u7684\u6eab\u5ea6\u503c(\u00b0C)\uff0c\u958b\u555f\u4e00\u500b New Subscription\uff0cTopic \u6b04\u4f4d\u586b\u5165\u3010inTopic\/Temp\u3011\uff0cQoS \u6b04\u4f4d\u586b\u5165\u30102\u3011\uff0cColor \u6b04\u4f4d\u3010\u9078\u4e00\u8272\u5f69\u3011\uff0cAlias \u6b04\u4f4d\u586b\u5165\u3010Temp\u3011\uff0c\u8a2d\u5b9a\u5982\u4e0b\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-49.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20467\" width=\"526\" height=\"456\"\/><\/figure><\/div>\n\n\n<ul>\n<li>MQTT X \u63a5\u6536\u5230\u7684\u6578\u64da\u503c\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-50.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20468\" width=\"720\" height=\"540\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u4f9d\u5e8f\u65b0\u589e\u5176\u4ed6\u8a02\u95b1\u4e3b\u984c(Topic)\uff0c\u7576\u5b8c\u6210\u76f8\u95dc\u4e3b\u984c\u8a02\u95b1\u4e4b\u5f8c\uff0cMQTT X \u5c31\u958b\u59cb\u63a5\u6536\u5f9e\u667a\u6167\u5de5\u5ee0\u50b3\u4f86\u7684\u611f\u6e2c\u5668\u8cc7\u8a0a\uff0c\u7d50\u679c\u5982\u4e0b\u5716\u6240\u793a\u3002\u900f\u904e\u89c0\u5bdf\u4e0d\u540c\u7684\u8a02\u95b1\u4e3b\u984c(\u5206\u5225\u4ee5\u4e0d\u540c\u7684\u984f\u8272\u8868\u793a)\uff0c\u5f97\u77e5\u611f\u6e2c\u5668\u76ee\u524d\u7684\u6578\u64da\u503c\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-51.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20469\" width=\"720\" height=\"539\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u6e2c\u8a66 MQTT X \u5ba2\u6236\u7aef\u767c\u5e03\u8a0a\u606f\u81f3\u667a\u6167\u5de5\u5ee0\u7684 MQTT Broker\u3002\u8a2d\u5b9a\u767c\u5e03\u4e3b\u984c\u70ba\u3010outTopic\u3011\uff0c\u8981\u767c\u9001\u7684\u6587\u5b57\u5b57\u4e32\u70ba\u3010\u201dHello Pi\u201d\u3011\uff0c\u6309\u4e0b\u65c1\u908a\u7684\u7da0\u8272\u6309\u9215\uff0c\u767c\u9001\u8a0a\u606f\u51fa\u53bb\uff0c\u5982\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-53.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20471\" width=\"501\" height=\"180\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u667a\u6167\u5de5\u5ee0\u7aef\u7684 MQTT Broker \u63a5\u6536\u5230\u6587\u5b57\u8a0a\u606f\uff0c\u5c07\u6703\u986f\u793a\u65bc Node-RED Dashboard \u4e0a\u7684\u3010\u63a5\u6536\u5230\u7684\u5b57\u4e32\u3011\uff0c\u7d50\u679c\u65bc\u5716\u6240\u793a\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-54.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20472\" width=\"645\" height=\"191\"\/><\/figure><\/div>\n\n\n<ul>\n<li>\u6700\u5f8c\uff0c\u900f\u904e\u667a\u6167\u5de5\u5ee0\u7aef Node-RED Dashboard \u4e0a\u7684 LED \u6309\u9215\u767c\u5e03\u8a0a\u606f(0\/1)\u81f3 MQTT X \u5ba2\u6236\u7aef\uff0c\u7d50\u679c\u5982\u4e0b\u5716\u3002<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.circuspi.com\/wp-content\/uploads\/2023\/09\/image-55.png\" alt=\"\u667a\u6167\u5de5\u5ee0\u6559\u5b78\u5be6\u9a57\u5e73\u53f0\u7cfb\u5217(\u56db)\uff1a\u5de5\u696d\u7269\u806f\u7db2\u61c9\u7528\u5c64\u5be6\u52d9\u6280\u8853 - \u4f7f\u7528Node-Red-MQTT\" class=\"wp-image-20473\" width=\"496\" height=\"388\"\/><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u7d50\u8ad6<\/h2>\n\n\n\n<p>\u9019\u6b21\u7684\u5206\u4eab\u5c31\u5230\u9019\u908a\uff0c\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u667a\u6167\u5de5\u5ee0\u7684\u5167\u5bb9\u55ce\uff1f\u6b61\u8fce\u6301\u7e8c\u8ffd\u8e64\u4e26\u652f\u6301\u6211\u5011\u5537\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9084\u8a18\u5f97\u5728\u4e0a\u4e00\u7bc7\uff0c\u5be6\u4f5c\u4e86\u4e00\u500b Node-Red-Dashboard\uff0c\u7528\u4ee5\u986f\u793a\u667a\u6167\u5de5\u5ee0\u88e1\u9762\u591a\u611f\u6e2c\u5668\u7684\u5373\u6642\u6578\u64da\u3002\u5982\u679c\u60f3\u8981\u628a\u6b64\u6578\u64da\u50b3\u8f38\u81f3\u591a\u500b\u4f7f\u7528\u8005\u7aef(\u53ef\u80fd\u662f 10 \u53f0\uff0c\u751a\u81f3\u662f 100 \u53f0\u4ee5\u4e0a\u7684\u96fb\u8166\u6216\u662f\u624b\u6a5f\u7528\u6236\u7aef)\uff0c\u8a72\u600e\u9ebc\u505a\u5462\uff1f\u672c\u7bc7\u5c07\u7e7c\u7e8c\u900f\u904e\u4e0a\u4e00\u7bc7\u7684\u7bc4\u4f8b\u7a0b\u5f0f\uff0c\u8aaa\u660e\u7269\u806f\u7db2\u5e38\u7528\u7684 MQTT \u901a\u8a0a\u5354\u5b9a\u53ca\u61c9\u7528\u5c64\u7684\u76f8\u95dc\u5be6\u52d9\u61c9\u7528\u6280\u8853\u3002<\/p>\n","protected":false},"author":1,"featured_media":20549,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112,238],"tags":[],"table_tags":[],"_links":{"self":[{"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/posts\/20543"}],"collection":[{"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/comments?post=20543"}],"version-history":[{"count":3,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/posts\/20543\/revisions"}],"predecessor-version":[{"id":20553,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/posts\/20543\/revisions\/20553"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/media\/20549"}],"wp:attachment":[{"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/media?parent=20543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/categories?post=20543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/tags?post=20543"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.circuspi.com\/index.php\/wp-json\/wp\/v2\/table_tags?post=20543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}