{"id":108483,"date":"2026-09-21T20:49:38","date_gmt":"2026-09-21T12:49:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/108483.html"},"modified":"2026-09-21T20:49:38","modified_gmt":"2026-09-21T12:49:38","slug":"%e9%9b%b6%e5%9f%ba%e7%a1%80%e5%ad%a6esp32%ef%bc%9amq-2%e7%83%9f%e9%9b%be%e4%bc%a0%e6%84%9f%e5%99%a8-%e8%ae%a9esp32%e6%8b%a5%e6%9c%89%e5%97%85%e8%a7%89%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/108483.html","title":{"rendered":"\u96f6\u57fa\u7840\u5b66ESP32\uff1aMQ-2\u70df\u96fe\u4f20\u611f\u5668\u2014\u2014\u8ba9ESP32\u62e5\u6709\u201c\u55c5\u89c9\u201d\uff01"},"content":{"rendered":"

\u524d\u9762\u6211\u4eec\u5b66\u4e86\u5149\u654f（\u89c6\u89c9）\u3001\u58f0\u97f3（\u542c\u89c9）\u3001\u6e29\u5ea6（\u89e6\u89c9）\u3001\u8d85\u58f0\u6ce2（\u7a7a\u95f4\u611f\u77e5）\u2014\u2014\u4eca\u5929\u518d\u7ed9ESP32\u52a0\u4e0a\u4e00\u9879\u65b0\u611f\u5b98：\u55c5\u89c9\u3002<\/p>\n

\u71c3\u6c14\u6cc4\u6f0f\u62a5\u8b66\u5668\u3001\u70df\u96fe\u62a5\u8b66\u5668\u3001\u7a7a\u6c14\u8d28\u91cf\u68c0\u6d4b\u4eea\u2026\u2026\u8fd9\u4e9b\u8bbe\u5907\u80fd"\u95fb\u5230"\u7a7a\u6c14\u4e2d\u7684\u5f02\u5e38\u6c14\u4f53，\u5728\u5371\u9669\u53d1\u751f\u524d\u53d1\u51fa\u8b66\u62a5\u3002\u5b83\u4eec\u80cc\u540e，\u5c31\u662f\u6c14\u4f53\u4f20\u611f\u5668\u5728\u5de5\u4f5c\u3002<\/p>\n

\u4eca\u5929\u8fd9\u8282\u8bfe，\u6211\u4eec\u5c31\u7528MQ-2\u70df\u96fe\u6d53\u5ea6\u4f20\u611f\u5668，\u8ba9ESP32\u80fd"\u95fb\u5230"\u70df\u96fe\u548c\u53ef\u71c3\u6c14\u4f53！<\/p>\n

\u7b2c\u4e00\u6b65：\u627e\u5230\u8bfe\u7a0b，\u770b\u770b\u6210\u54c1\u6548\u679c<\/h4>\n

\u6253\u5f00\u9017\u8111IDE，\u70b9\u51fb\u9876\u90e8 \u201c\u6587\u6863\u201d，\u5728 \u201c\u8bfe\u7a0b\u201d \u2192 \u201cESP32 + MicroPython\u201d \u5206\u7c7b\u4e0b，\u627e\u5230MQ-2\u70df\u96fe\u6d53\u5ea6\u4f20\u611f\u5668\u3002<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u6253\u5f00\u8bfe\u4ef6，\u4f60\u4f1a\u770b\u5230\u672c\u8282\u8bfe\u7684\u6700\u7ec8\u6548\u679c：\u7528\u6253\u706b\u673a\u9760\u8fd1\u4f20\u611f\u5668\u70b9\u706b（\u4e0d\u70b9\u7740，\u53ea\u662f\u91ca\u653e\u4e00\u70b9\u6c14\u4f53），\u4f20\u611f\u5668\u4e0a\u7684\u7eff\u8272LED\u706f\u4eae\u8d77，\u540c\u65f6\u7ec8\u7aef\u6253\u5370\u7684\u6570\u503c\u53d1\u751f\u660e\u663e\u53d8\u5316\u3002<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u7b2c\u4e8c\u6b65：MQ-2\u662f\u4ec0\u4e48？<\/h4>\n

MQ-2\u662f\u4e00\u6b3e\u5e38\u7528\u7684\u70df\u96fe\/\u53ef\u71c3\u6c14\u4f53\u4f20\u611f\u5668，\u5b83\u7684\u6838\u5fc3\u6750\u6599\u662f\u4e8c\u6c27\u5316\u9521（SnO\u2082）\u534a\u5bfc\u4f53\u6c14\u654f\u6750\u6599\u3002<\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u5de5\u4f5c\u539f\u7406（\u7b80\u5355\u7406\u89e3）：<\/p>\n

\u5728200~300\u2103\u7684\u9ad8\u6e29\u4e0b，\u4e8c\u6c27\u5316\u9521\u4f1a\u5438\u9644\u7a7a\u6c14\u4e2d\u7684\u6c27\u6c14，\u5f62\u6210\u6c27\u8d1f\u79bb\u5b50，\u4f7f\u534a\u5bfc\u4f53\u4e2d\u7684\u7535\u5b50\u51cf\u5c11，\u7535\u963b\u53d8\u5927\u3002<\/p>\n

\u5f53\u70df\u96fe\u6216\u53ef\u71c3\u6c14\u4f53\u63a5\u89e6\u5230\u5b83\u65f6，\u4f1a\u4e0e\u5438\u9644\u7684\u6c27\u6c14\u53d1\u751f\u53cd\u5e94，\u7535\u963b\u503c\u4e0b\u964d，\u5bfc\u7535\u7387\u4e0a\u5347\u3002<\/p>\n

\u6c14\u4f53\u6d53\u5ea6\u8d8a\u5927 \u2192 \u7535\u963b\u8d8a\u4f4e \u2192 \u8f93\u51fa\u7684\u6a21\u62df\u4fe1\u53f7\u8d8a\u5927<\/p>\n

\u6838\u5fc3\u7279\u70b9：<\/p>\n\n\u53c2\u6570\u8bf4\u660e<\/tr>\n\n\n\n\n\n\n
\u68c0\u6d4b\u6c14\u4f53<\/td>\n\u70df\u96fe\u3001\u6db2\u5316\u6c14\u3001\u4e19\u70f7\u3001\u6c22\u6c14\u3001\u7532\u70f7\u3001\u9152\u7cbe\u7b49<\/td>\n<\/tr>\n
\u68c0\u6d4b\u8303\u56f4<\/td>\n300 ~ 10000 ppm<\/td>\n<\/tr>\n
\u5de5\u4f5c\u7535\u538b<\/td>\n5V（\u52a0\u70ed\u4e1d\u9700\u89815V）<\/td>\n<\/tr>\n
\u8f93\u51fa\u4fe1\u53f7<\/td>\n\u6a21\u62df\u91cf（AO）+ \u6570\u5b57\u91cf（DO）<\/td>\n<\/tr>\n
\u9884\u70ed\u65f6\u95f4<\/td>\n\u7ea620\u79d2（\u9996\u6b21\u4f7f\u7528\u5efa\u8bae\u9884\u70ed\u66f4\u4e45）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7b2c\u4e09\u6b65：\u4e24\u8def\u8f93\u51fa\u2014\u2014\u6a21\u62df\u91cf\u548c\u6570\u5b57\u91cf<\/h4>\n

MQ-2\u6a21\u5757\u63d0\u4f9b\u4e24\u8def\u4fe1\u53f7\u8f93\u51fa，\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u9700\u6c42：<\/p>\n\n\u5f15\u811a\u4fe1\u53f7\u7c7b\u578b\u8f93\u51fa\u503c\u8bf4\u660e<\/tr>\n\n\n\n
DO<\/td>\n\u6570\u5b57\u8f93\u51fa<\/td>\n0 \u6216 1<\/td>\n\u9ed8\u8ba4\u8f93\u51fa1（\u6d53\u5ea6\u672a\u8d85\u6807），\u68c0\u6d4b\u5230\u70df\u96fe\u65f6\u8f93\u51fa0（\u53ef\u901a\u8fc7\u80cc\u9762\u65cb\u94ae\u8c03\u8282\u7075\u654f\u5ea6）<\/td>\n<\/tr>\n
AO<\/td>\n\u6a21\u62df\u8f93\u51fa<\/td>\n0 ~ 4095<\/td>\n\u6570\u503c\u8d8a\u5927，\u70df\u96fe\u6d53\u5ea6\u8d8a\u5927<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

💡 \u7b80\u5355\u8bb0\u5fc6：<\/p>\n

    \n
  • DO \u2192 \u53ea\u544a\u8bc9\u4f60"\u6709\u6ca1\u6709\u8d85\u6807"（\u62a5\u8b66\u5f00\u5173）<\/li>\n
  • AO \u2192 \u544a\u8bc9\u4f60"\u6d53\u5ea6\u6709\u591a\u5927"（\u7cbe\u786e\u6d4b\u91cf）<\/li>\n<\/ul>\n

    \u7b2c\u56db\u6b65：\u52a8\u624b\u63a5\u7ebf<\/h4>\n

    MQ-2\u6a21\u5757\u67094\u4e2a\u5f15\u811a，\u63a5\u7ebf\u5982\u4e0b：<\/p>\n\nMQ-2\u5f15\u811a\u8fde\u63a5ESP32\u8bf4\u660e<\/tr>\n\n\n\n\n\n
    VCC<\/td>\n3.3V<\/td>\n\u7535\u6e90\u6b63\u6781<\/td>\n<\/tr>\n
    GND<\/td>\nGND<\/td>\n\u7535\u6e90\u5730<\/td>\n<\/tr>\n
    DO<\/td>\nGPIO15<\/td>\n\u6570\u5b57\u8f93\u51fa（\u62a5\u8b66\u4fe1\u53f7）<\/td>\n<\/tr>\n
    AO<\/td>\nGPIO2<\/td>\n\u6a21\u62df\u8f93\u51fa（\u6d53\u5ea6\u503c）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    📌 \u6ce8\u610f： \u4f20\u611f\u5668\u5185\u90e8\u6709\u52a0\u70ed\u4e1d，\u5de5\u4f5c\u65f6\u4f1a\u5fae\u5fae\u53d1\u70ed，\u8fd9\u662f\u6b63\u5e38\u73b0\u8c61，\u4e0d\u7528\u62c5\u5fc3\u3002<\/p>\n

    \u7b2c\u4e94\u6b65：\u4ee3\u7801\u2014\u2014\u540c\u65f6\u8bfb\u53d6\u6570\u5b57\u91cf\u548c\u6a21\u62df\u91cf<\/h4>\n

    from<\/span> machine import<\/span> Pin,<\/span> ADC
    \nimport<\/span> time<\/p>\n

    # \u6570\u5b57\u91cf\u5f15\u811a（DO）<\/span>
    \ndigital_data_pin =<\/span> Pin(<\/span>15<\/span>)<\/span><\/p>\n

    # \u6a21\u62df\u91cf\u5f15\u811a（AO）<\/span>
    \nanalog_data_pin =<\/span> ADC(<\/span>Pin(<\/span>2<\/span>)<\/span>)<\/span>
    \nanalog_data_pin.<\/span>atten(<\/span>ADC.<\/span>ATTN_11DB)<\/span> # \u91cf\u7a0b\u8bbe\u4e3a3.3V<\/span><\/p>\n

    while<\/span> True<\/span>:<\/span>
    \n # \u6253\u5370：\u6570\u5b57\u91cf + \u6a21\u62df\u91cf<\/span>
    \n print<\/span>(<\/span>digital_data_pin.<\/span>value(<\/span>)<\/span>,<\/span> analog_data_pin.<\/span>read(<\/span>)<\/span>)<\/span>
    \n time.<\/span>sleep(<\/span>0.5<\/span>)<\/span><\/p>\n

    \u4ee3\u7801\u89e3\u8bfb：<\/p>\n\n\u4ee3\u7801\u4f5c\u7528<\/tr>\n\n\n\n\n
    Pin(15)<\/td>\n\u8bfb\u53d6DO\u6570\u5b57\u4fe1\u53f7（0\u62161）<\/td>\n<\/tr>\n
    ADC(Pin(2))<\/td>\n\u8bfb\u53d6AO\u6a21\u62df\u4fe1\u53f7（0~4095）<\/td>\n<\/tr>\n
    atten(ADC.ATTN_11DB)<\/td>\n\u914d\u7f6e\u91cf\u7a0b\u4e3a3.3V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u7b2c\u516d\u6b65：\u4fdd\u5b58\u8fd0\u884c，\u7528\u6253\u706b\u673a\u6d4b\u8bd5！<\/h4>\n

    \u8fd0\u884c\u524d\u51c6\u5907： \u5148\u8ba9\u4f20\u611f\u5668\u9884\u70ed20\u79d2\u5de6\u53f3，\u8ba9\u5185\u90e8\u52a0\u70ed\u4e1d\u8fbe\u5230\u5de5\u4f5c\u6e29\u5ea6，\u8bfb\u6570\u624d\u7a33\u5b9a\u3002<\/p>\n

    \u4fdd\u5b58\u4ee3\u7801，\u9009\u62e9ESP32\u8bbe\u5907，\u6587\u4ef6\u540d mq2.py<\/p>\n

    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

    \u70b9\u51fb\u8fd0\u884c\u6309\u94ae，\u7ec8\u7aef\u5f00\u59cb\u6253\u5370\u6570\u636e：<\/p>\n

    \u6b63\u5e38\u7a7a\u6c14\u73af\u5883\u4e0b：<\/p>\n

    1 1603
    \n1 1597
    \n1 1594<\/p>\n

    \u6253\u706b\u673a\u9760\u8fd1\u70b9\u706b（\u91ca\u653e\u6c14\u4f53）：<\/p>\n

    0 1888
    \n0 2130
    \n0 2303<\/p>\n

    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

    \u540c\u65f6\u89c2\u5bdf\u4f20\u611f\u5668： \u68c0\u6d4b\u5230\u70df\u96fe\u65f6，\u6a21\u5757\u4e0a\u7684\u7eff\u8272LED\u706f\u4f1a\u4eae\u8d77\u3002<\/p>\n

    \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

    \u6570\u636e\u89e3\u8bfb<\/h4>\n\n\u4f20\u611f\u5668\u72b6\u6001DO\u503cAO\u503c\u7eff\u8272LED<\/tr>\n\n\n\n
    \u6b63\u5e38\u7a7a\u6c14<\/td>\n1<\/td>\n\u7ea6300~400<\/td>\n\u706d<\/td>\n<\/tr>\n
    \u68c0\u6d4b\u5230\u70df\u96fe<\/td>\n0<\/td>\n\u660e\u663e\u5347\u9ad8<\/td>\n\u4eae<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    📌 \u7075\u654f\u5ea6\u8c03\u8282： \u4f20\u611f\u5668\u80cc\u9762\u6709\u4e00\u4e2a\u84dd\u8272\u7535\u4f4d\u5668，\u53ef\u4ee5\u8c03\u8282DO\u8f93\u51fa\u7684\u89e6\u53d1\u9608\u503c\u3002\u987a\u65f6\u9488\u8c03\u9ad8\u7075\u654f\u5ea6，\u9006\u65f6\u9488\u964d\u4f4e\u7075\u654f\u5ea6\u3002<\/p>\n

    MQ-2\u80fd\u505a\u4ec0\u4e48？<\/h4>\n\n\u5e94\u7528\u573a\u666f\u7528\u9014<\/tr>\n\n\n\n\n\n\n\n
    \u71c3\u6c14\u6cc4\u6f0f\u62a5\u8b66<\/td>\n\u68c0\u6d4b\u53a8\u623f\u71c3\u6c14\u6cc4\u6f0f，\u81ea\u52a8\u62a5\u8b66<\/td>\n<\/tr>\n
    \u70df\u96fe\u62a5\u8b66\u5668<\/td>\n\u68c0\u6d4b\u706b\u707e\u521d\u671f\u70df\u96fe<\/td>\n<\/tr>\n
    \u7a7a\u6c14\u8d28\u91cf\u76d1\u6d4b<\/td>\n\u68c0\u6d4b\u5ba4\u5185\u7a7a\u6c14\u8d28\u91cf<\/td>\n<\/tr>\n
    \u667a\u80fd\u53a8\u623f<\/td>\n\u68c0\u6d4b\u6cb9\u70df\u6d53\u5ea6，\u81ea\u52a8\u5f00\u542f\u6392\u98ce\u6247<\/td>\n<\/tr>\n
    \u9152\u7cbe\u68c0\u6d4b<\/td>\n\u68c0\u6d4b\u9152\u7cbe\u6d53\u5ea6（\u9700\u6821\u51c6）<\/td>\n<\/tr>\n
    DIY\u5b89\u5168\u88c5\u7f6e<\/td>\n\u8f66\u5e93\u3001\u4ed3\u5e93\u6c14\u4f53\u76d1\u6d4b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u7ed3\u5408\u4e4b\u524d\u5b66\u8fc7\u7684\u8bfe\u7a0b<\/h4>\n

    MQ-2\u53ef\u4ee5\u548c\u5176\u4ed6\u6a21\u5757\u7ec4\u5408，\u505a\u51fa\u5b9e\u7528\u7684\u9879\u76ee：<\/p>\n\n\u7ec4\u5408\u6548\u679c<\/tr>\n\n\n\n\n\n
    MQ-2 + \u8702\u9e23\u5668<\/td>\n\u70df\u96fe\u8d85\u6807\u65f6\u53d1\u51fa\u8b66\u62a5\u58f0<\/td>\n<\/tr>\n
    MQ-2 + \u7ee7\u7535\u5668<\/td>\n\u68c0\u6d4b\u5230\u71c3\u6c14\u6cc4\u6f0f\u81ea\u52a8\u5207\u65ad\u7535\u6e90<\/td>\n<\/tr>\n
    MQ-2 + OLED\u5c4f\u5e55<\/td>\n\u5b9e\u65f6\u663e\u793a\u70df\u96fe\u6d53\u5ea6\u6570\u503c<\/td>\n<\/tr>\n
    MQ-2 + WiFi<\/td>\n\u68c0\u6d4b\u5230\u5f02\u5e38，\u624b\u673a\u8fdc\u7a0b\u63a8\u9001\u901a\u77e5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u5168\u7a0b\u56de\u987e<\/h4>\n\n\u6b65\u9aa4\u64cd\u4f5c\u6548\u679c<\/tr>\n\n\n\n\n\n\n\n\n
    \u627e\u5230\u8bfe\u7a0b<\/td>\n\u6587\u6863\u2192\u8bfe\u7a0b\u2192ESP32+MicroPython\u2192MQ-2 \u70df\u96fe\u6d53\u5ea6\u4f20\u611f\u5668<\/td>\n\u4e86\u89e3MQ-2\u4f20\u611f\u5668<\/td>\n<\/tr>\n
    \u8ba4\u8bc6\u539f\u7406<\/td>\n\u4e8c\u6c27\u5316\u9521\u534a\u5bfc\u4f53 + \u7535\u963b\u53d8\u5316<\/td>\n\u7406\u89e3"\u6c14\u4f53\u6d53\u5ea6\u2192\u7535\u963b\u2192\u4fe1\u53f7"<\/td>\n<\/tr>\n
    \u52a8\u624b\u63a5\u7ebf<\/td>\nVCC\u21923.3V, GND\u2192GND, DO\u2192GPIO15, AO\u2192GPIO2<\/td>\n\u786c\u4ef6\u5c31\u4f4d<\/td>\n<\/tr>\n
    \u9884\u70ed\u4f20\u611f\u5668<\/td>\n\u901a\u7535\u7b49\u5f8520\u79d2<\/td>\n\u8bfb\u6570\u7a33\u5b9a<\/td>\n<\/tr>\n
    \u6253\u5f00\u4ee3\u7801<\/td>\n\u70b9\u51fb"\u6253\u5f00"\u6309\u94ae<\/td>\n\u4ee3\u7801\u8fdb\u5165\u7f16\u8f91\u5668<\/td>\n<\/tr>\n
    \u4fdd\u5b58\u8fd0\u884c<\/td>\nCtrl+S \u2192 \u9009\u62e9ESP32 \u2192 \u8fd0\u884c<\/td>\n\u5f00\u59cb\u68c0\u6d4b<\/td>\n<\/tr>\n
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