{"id":194999,"date":"2024-11-13T11:21:19","date_gmt":"2024-11-13T03:21:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194999\/"},"modified":"2024-11-13T11:21:21","modified_gmt":"2024-11-13T03:21:21","slug":"%e7%94%a8%e6%a8%b9%e8%8e%93%e6%b4%be%e8%bc%95%e9%ac%86%e8%ae%80%e5%8f%96%e5%82%b3%e6%84%9f%e5%99%a8%e6%95%b8%e6%93%9a%ef%bc%8c%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%a3%e6%8e%a7%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194999\/","title":{"rendered":"\u7528\u6a39\u8393\u6d3e\u8f15\u9b06\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\uff0c\u5be6\u73fe\u6578\u64da\u5eab\u76e3\u63a7\uff01 (\u6a39\u8393\u6d3e\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e7%94%a8%e6%a8%b9%e8%8e%93%e6%b4%be%e8%bc%95%e9%ac%86%e8%ae%80%e5%8f%96%e5%82%b3%e6%84%9f%e5%99%a8%e6%95%b8%e6%93%9a%ef%bc%8c%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%a3%e6%8e%a7%ef%bc%81-WvYOjVOqgP\">\u7528\u6a39\u8393\u6d3e\u8f15\u9b06\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\uff0c\u5be6\u73fe\u6578\u64da\u5eab\u76e3\u63a7\uff01<\/h1>\n<p>\u96a8\u8457\u7269\u806f\u7db2\uff08IoT\uff09\u7684\u5feb\u901f\u767c\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u61c9\u7528\u5834\u666f\u9700\u8981\u5be6\u6642\u76e3\u63a7\u548c\u6578\u64da\u6536\u96c6\u3002\u6a39\u8393\u6d3e\u4f5c\u70ba\u4e00\u6b3e\u5c0f\u578b\u4e14\u529f\u80fd\u5f37\u5927\u7684\u55ae\u677f\u96fb\u8166\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u548c\u611b\u597d\u8005\u7684\u9996\u9078\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528\u6a39\u8393\u6d3e\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\uff0c\u4e26\u5c07\u9019\u4e9b\u6578\u64da\u5b58\u5132\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u4ee5\u5be6\u73fe\u6709\u6548\u7684\u6578\u64da\u76e3\u63a7\u3002<\/p>\n<h2 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id=\"%e6%89%80%e9%9c%80%e7%a1%ac%e4%bb%b6-WvYOjVOqgP\">\u6240\u9700\u786c\u4ef6<\/h2>\n<ul>\n<li>\u6a39\u8393\u6d3e\uff08\u4efb\u4f55\u578b\u865f\u5747\u53ef\uff09<\/li>\n<li>\u50b3\u611f\u5668\uff08\u5982\u6eab\u5ea6\u50b3\u611f\u5668\u3001\u6fd5\u5ea6\u50b3\u611f\u5668\u7b49\uff09<\/li>\n<li>\u9762\u5305\u677f\u548c\u8df3\u7dda<\/li>\n<li>\u96fb\u6e90\u4f9b\u61c9\u5668<\/li>\n<li>SD\u5361\uff08\u7528\u65bc\u5b89\u88dd\u64cd\u4f5c\u7cfb\u7d71\uff09<\/li>\n<\/ul>\n<h2 id=\"%e5%ae%89%e8%a3%9d%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%b5%b1-WvYOjVOqgP\">\u5b89\u88dd\u64cd\u4f5c\u7cfb\u7d71<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u70ba\u6a39\u8393\u6d3e\u5b89\u88dd\u64cd\u4f5c\u7cfb\u7d71\u3002\u53ef\u4ee5\u5f9e\u6a39\u8393\u6d3e\u5b98\u65b9\u7db2\u7ad9\u4e0b\u8f09Raspberry Pi Imager\uff0c\u7136\u5f8c\u5c07\u5176\u5b89\u88dd\u5230SD\u5361\u4e2d\u3002\u5b8c\u6210\u5f8c\uff0c\u5c07SD\u5361\u63d2\u5165\u6a39\u8393\u6d3e\uff0c\u4e26\u555f\u52d5\u8a2d\u5099\u3002<\/p>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e5%82%b3%e6%84%9f%e5%99%a8-WvYOjVOqgP\">\u9023\u63a5\u50b3\u611f\u5668<\/h2>\n<p>\u4ee5DHT11\u6eab\u5ea6\u548c\u6fd5\u5ea6\u50b3\u611f\u5668\u70ba\u4f8b\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u5c07\u5176\u9023\u63a5\u5230\u6a39\u8393\u6d3e\uff1a<\/p>\n<ul>\n<li>\u5c07DHT11\u7684VCC\u5f15\u8173\u9023\u63a5\u5230\u6a39\u8393\u6d3e\u76843.3V\u5f15\u8173\u3002<\/li>\n<li>\u5c07DHT11\u7684GND\u5f15\u8173\u9023\u63a5\u5230\u6a39\u8393\u6d3e\u7684GND\u5f15\u8173\u3002<\/li>\n<li>\u5c07DHT11\u7684\u6578\u64da\u5f15\u8173\u9023\u63a5\u5230\u6a39\u8393\u6d3e\u7684GPIO\u5f15\u8173\uff08\u4f8b\u5982GPIO4\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%ae%89%e8%a3%9d%e6%89%80%e9%9c%80%e7%9a%84%e5%ba%ab-WvYOjVOqgP\">\u5b89\u88dd\u6240\u9700\u7684\u5eab<\/h2>\n<p>\u5728\u6a39\u8393\u6d3e\u4e0a\uff0c\u60a8\u9700\u8981\u5b89\u88dd\u4e00\u4e9bPython\u5eab\u4f86\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88dd\u6240\u9700\u7684\u5eab\uff1a<\/p>\n<pre><code>sudo apt-get update\nsudo apt-get install python3-pip\npip3 install Adafruit_DHT<\/code><\/pre>\n<h2 id=\"%e7%b7%a8%e5%af%ab%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a%e7%9a%84%e4%bb%a3%e7%a2%bc-WvYOjVOqgP\">\u7de8\u5beb\u8b80\u53d6\u6578\u64da\u7684\u4ee3\u78bc<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u7de8\u5beb\u4e00\u500b\u7c21\u55ae\u7684Python\u8173\u672c\u4f86\u8b80\u53d6DHT11\u50b3\u611f\u5668\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>import Adafruit_DHT\nimport time\n\n# \u8a2d\u5b9a\u50b3\u611f\u5668\u985e\u578b\u548cGPIO\u5f15\u8173\nsensor = Adafruit_DHT.DHT11\npin = 4\n\nwhile True:\n    humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)\n    if humidity is not None and temperature is not None:\n        print('Temp={0:0.1f}*C  Humidity={1:0.1f}%'.format(temperature, humidity))\n    else:\n        print('Failed to get data from the sensor')\n    time.sleep(2)<\/code><\/pre>\n<h2 id=\"%e5%b0%87%e6%95%b8%e6%93%9a%e5%ad%98%e5%84%b2%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-WvYOjVOqgP\">\u5c07\u6578\u64da\u5b58\u5132\u5230\u6578\u64da\u5eab<\/h2>\n<p>\u70ba\u4e86\u5be6\u73fe\u6578\u64da\u5eab\u76e3\u63a7\uff0c\u60a8\u53ef\u4ee5\u9078\u64c7\u4f7f\u7528MySQL\u6216SQLite\u7b49\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u5c07\u6578\u64da\u5b58\u5132\u5230SQLite\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import sqlite3\n\n# \u9023\u63a5\u5230SQLite\u6578\u64da\u5eab\uff08\u5982\u679c\u4e0d\u5b58\u5728\u5247\u5275\u5efa\uff09\nconn = sqlite3.connect('sensor_data.db')\nc = conn.cursor()\n\n# \u5275\u5efa\u8868\u683c\nc.execute('''CREATE TABLE IF NOT EXISTS readings\n             (timestamp DATETIME, temperature REAL, humidity REAL)''')\n\n# \u5728\u8b80\u53d6\u6578\u64da\u6642\u63d2\u5165\u6578\u64da\nc.execute(\"INSERT INTO readings (timestamp, temperature, humidity) VALUES (datetime('now'), ?, ?)\", (temperature, humidity))\nconn.commit()\nconn.close()<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WvYOjVOqgP\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u4f7f\u7528\u6a39\u8393\u6d3e\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\u4e26\u5c07\u5176\u5b58\u5132\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u5be6\u73fe\u6578\u64da\u76e3\u63a7\u3002\u9019\u4e0d\u50c5\u80fd\u5e6b\u52a9\u60a8\u4e86\u89e3\u74b0\u5883\u8b8a\u5316\uff0c\u9084\u80fd\u70ba\u5f8c\u7e8c\u7684\u6578\u64da\u5206\u6790\u63d0\u4f9b\u57fa\u790e\u3002\u96a8\u8457\u6280\u8853\u7684\u9032\u6b65\uff0c\u6a39\u8393\u6d3e\u5728\u7269\u806f\u7db2\u9818\u57df\u7684\u61c9\u7528\u5c07\u6703\u8d8a\u4f86\u8d8a\u5ee3\u6cdb\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5b58\u5132\u548c\u8655\u7406\u80fd\u529b\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">VPS<\/a>\u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u9805\u76ee\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u6a39\u8393\u6d3e\u8f15\u9b06\u8b80\u53d6\u50b3\u611f\u5668\u6578\u64da\uff0c\u5be6\u73fe\u6578\u64da\u5eab\u76e3\u63a7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u8b93\u60a8\u7684\u9805\u76ee\u66f4\u667a\u80fd\uff01<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-194999","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=194999"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194999\/revisions"}],"predecessor-version":[{"id":195000,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194999\/revisions\/195000"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}