{"id":78302,"date":"2026-02-26T23:43:17","date_gmt":"2026-02-26T15:43:17","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/78302.html"},"modified":"2026-02-26T23:43:17","modified_gmt":"2026-02-26T15:43:17","slug":"%e9%81%bf%e5%9d%91%e6%8c%87%e5%8d%97%ef%bc%9ahc-sr501%e4%ba%ba%e4%bd%93%e6%84%9f%e5%ba%94%e6%a8%a1%e5%9d%97%e7%9a%845%e4%b8%aa%e5%b8%b8%e8%a7%81%e8%af%af%e5%8c%ba%e5%92%8c%e8%b0%83%e8%af%95%e6%8a%80","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/78302.html","title":{"rendered":"\u907f\u5751\u6307\u5357\uff1aHC-SR501\u4eba\u4f53\u611f\u5e94\u6a21\u5757\u76845\u4e2a\u5e38\u89c1\u8bef\u533a\u548c\u8c03\u8bd5\u6280\u5de7"},"content":{"rendered":"

HC-SR501\u4eba\u4f53\u611f\u5e94\u6a21\u5757\u5b9e\u6218\u907f\u5751\u6307\u5357：\u4ece\u539f\u7406\u5230\u8c03\u8bd5\u7684\u6df1\u5ea6\u89e3\u6790<\/h2>\n

\u5728\u667a\u80fd\u5bb6\u5c45\u548c\u7269\u8054\u7f51\u9879\u76ee\u4e2d，\u4eba\u4f53\u7ea2\u5916\u611f\u5e94\u6a21\u5757\u56e0\u5176\u975e\u63a5\u89e6\u5f0f\u68c0\u6d4b\u7279\u6027\u6210\u4e3a\u6838\u5fc3\u7ec4\u4ef6\u4e4b\u4e00\u3002HC-SR501\u4f5c\u4e3a\u7ecf\u5178\u578b\u53f7，\u5176\u5b9e\u9645\u5e94\u7528\u5374\u5e38\u56e0\u73af\u5883\u5e72\u6270\u3001\u5b89\u88c5\u4e0d\u5f53\u7b49\u95ee\u9898\u5bfc\u81f4\u8bef\u89e6\u53d1\u3002\u672c\u6587\u5c06\u76f4\u51fb\u4e94\u5927\u5178\u578b\u75db\u70b9，\u901a\u8fc7\u70ed\u91ca\u7535\u539f\u7406\u5256\u6790\u548c\u5b9e\u6218\u6848\u4f8b，\u63d0\u4f9b\u53ef\u843d\u5730\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n

1. \u70ed\u91ca\u7535\u539f\u7406\u4e0e\u6a21\u5757\u5de5\u4f5c\u673a\u5236\u6df1\u5ea6\u89e3\u6790<\/h3>\n

HC-SR501\u7684\u6838\u5fc3\u5728\u4e8e\u53cc\u5143\u70ed\u91ca\u7535\u4f20\u611f\u5668（\u901a\u5e38\u91c7\u7528RE200B）\u4e0e\u83f2\u6d85\u5c14\u900f\u955c\u7684\u7ec4\u5408\u3002\u5f53\u4eba\u4f53（\u6e29\u5ea6\u7ea636-37\u2103）\u53d1\u51fa\u76849-10\u03bcm\u7ea2\u5916\u7ebf\u901a\u8fc7\u900f\u955c\u805a\u7126\u540e，\u4f1a\u5728\u4f20\u611f\u5668\u4e0a\u4ea7\u751f\u4ea4\u66ff\u7684"\u70ed\u6591"\u3002\u8fd9\u79cd\u6e29\u5ea6\u53d8\u5316\u5bfc\u81f4\u4f20\u611f\u5668\u5185\u90e8\u6676\u4f53\u6781\u5316\u4ea7\u751f\u7535\u8377，\u7ecfBISS0001\u4fe1\u53f7\u5904\u7406\u82af\u7247\u653e\u5927\u6ee4\u6ce2\u540e\u8f93\u51fa\u4fe1\u53f7\u3002<\/p>\n

\u5173\u952e\u53c2\u6570\u89e3\u6790：<\/p>\n\n\u53c2\u6570\u5178\u578b\u503c\u5f71\u54cd\u7ef4\u5ea6<\/tr>\n\n\n\n\n\n
\u5de5\u4f5c\u7535\u538b<\/td>\n4.5-20V DC<\/td>\n\u7535\u538b\u8fc7\u4f4e\u5bfc\u81f4\u68c0\u6d4b\u8ddd\u79bb\u7f29\u77ed<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n<50\u03bcA<\/td>\n\u7535\u6c60\u4f9b\u7535\u9879\u76ee\u5173\u952e\u6307\u6807<\/td>\n<\/tr>\n
\u611f\u5e94\u89d2\u5ea6<\/td>\n<120\u00b0<\/td>\n\u5b89\u88c5\u65b9\u4f4d\u51b3\u5b9a\u8986\u76d6\u8303\u56f4<\/td>\n<\/tr>\n
\u89e6\u53d1\u5ef6\u65f6<\/td>\n5-200s\u53ef\u8c03<\/td>\n\u9700\u914d\u5408\u5c01\u9501\u65f6\u95f4\u8bbe\u7f6e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6ce8：\u6a21\u5757\u521d\u59cb\u5316\u65f6\u4f1a\u6709\u7ea660\u79d2\u7684\u6821\u51c6\u671f，\u671f\u95f4\u53ef\u80fd\u8bef\u89e6\u53d12-3\u6b21\u5c5e\u6b63\u5e38\u73b0\u8c61<\/p>\n

2. \u4e94\u5927\u5178\u578b\u8bef\u89e6\u53d1\u573a\u666f\u53ca\u89e3\u51b3\u65b9\u6848<\/h3>\n

2.1 \u73af\u5883\u6e29\u5ea6\u5e72\u6270<\/h4>\n

\u5f53\u73af\u5883\u6e29\u5ea6\u63a5\u8fd1\u4eba\u4f53\u4f53\u6e29（\u5982\u590f\u5b63\u9ad8\u6e29\u73af\u5883），\u4f20\u611f\u5668\u7075\u654f\u5ea6\u4f1a\u663e\u8457\u4e0b\u964d\u3002\u89e3\u51b3\u65b9\u6cd5：<\/p>\n

    \n
  • \u542f\u7528\u6e29\u5ea6\u8865\u507f\u529f\u80fd（\u8fde\u63a510K NTC\u70ed\u654f\u7535\u963b）<\/li>\n
  • \u5b89\u88c5\u4f4d\u7f6e\u907f\u5f00\u7a7a\u8c03\u51fa\u98ce\u53e3\u3001\u6696\u6c14\u7247\u7b49\u6e29\u53d8\u533a\u57df<\/li>\n
  • \u901a\u8fc7\u7535\u4f4d\u5668\u8c03\u6574\u7075\u654f\u5ea6（\u987a\u65f6\u9488\u589e\u5927\u68c0\u6d4b\u8ddd\u79bb）<\/li>\n<\/ul>\n

    \/\/ Arduino\u73af\u5883\u4e0b\u7684\u6e29\u5ea6\u8865\u507f\u793a\u4f8b
    \nconst int tempPin = A0;
    \nconst int pirPin = 2;<\/p>\n

    void setup() {
    \n pinMode(pirPin, INPUT);
    \n Serial.begin(9600);
    \n}<\/p>\n

    void loop() {
    \n int tempValue = analogRead(tempPin);
    \n float voltage = tempValue * 5.0 \/ 1024;
    \n float temperature = (voltage – 0.5) * 100; \/\/ 10mV\/\u2103<\/p>\n

    if(temperature > 30) {
    \n \/\/ \u9ad8\u6e29\u73af\u5883\u4e0b\u81ea\u52a8\u7f29\u77ed\u68c0\u6d4b\u8ddd\u79bb
    \n analogWrite(9, map(temperature, 30, 40, 255, 150));
    \n }
    \n}<\/p>\n

    2.2 \u83f2\u6d85\u5c14\u900f\u955c\u6c61\u67d3<\/h4>\n

    \u7070\u5c18\u3001\u6cb9\u6c61\u4f1a\u5bfc\u81f4\u7ea2\u5916\u7ebf\u6298\u5c04\u5f02\u5e38\u3002\u7ef4\u62a4\u8981\u70b9：<\/p>\n

  • \u6bcf\u6708\u7528\u9152\u7cbe\u68c9\u7247\u6e05\u6d01\u900f\u955c\u8868\u9762<\/li>\n
  • \u907f\u514d\u4f7f\u7528\u6709\u673a\u6eb6\u5242\u64e6\u62ed<\/li>\n
  • \u5de5\u4e1a\u73af\u5883\u5efa\u8bae\u52a0\u88c5\u9632\u5c18\u7f69（\u900f\u5149\u7387>85%）<\/li>\n

    2.3 \u5b89\u88c5\u4f4d\u7f6e\u4e0d\u5f53<\/h4>\n

    \u5e38\u89c1\u9519\u8bef\u5b89\u88c5\u65b9\u5f0f\u4e0e\u4fee\u6b63\u65b9\u6848：<\/p>\n

      \n
    • \u9519\u8bef1：\u6a21\u5757\u6b63\u5bf9\u7a97\u6237
      \n\u4fee\u6b63：\u8c03\u6574\u89d2\u5ea6\u4f7f\u63a2\u6d4b\u65b9\u5411\u4e0e\u7a97\u6237\u544845\u00b0\u4ee5\u4e0a\u5939\u89d2<\/li>\n
    • \u9519\u8bef2：\u5b89\u88c5\u9ad8\u5ea6\u4f4e\u4e8e1.8\u7c73
      \n\u4fee\u6b63：\u6700\u4f73\u9ad8\u5ea62-2.2\u7c73（\u7b26\u5408\u4eba\u4f53\u884c\u8d70\u65f6\u7684\u7ea2\u5916\u8f90\u5c04\u89d2\u5ea6）<\/li>\n
    • \u9519\u8bef3：\u53cc\u5143\u4f20\u611f\u5668\u65b9\u5411\u4e0e\u4eba\u4f53\u79fb\u52a8\u65b9\u5411\u5782\u76f4
      \n\u4fee\u6b63：\u4f7f\u4f20\u611f\u5668\u957f\u8fb9\u5e73\u884c\u4e8e\u4e3b\u8981\u4eba\u6d41\u65b9\u5411<\/li>\n<\/ul>\n

      3. \u9ad8\u7ea7\u8c03\u8bd5\u6280\u5de7\u4e0e\u53c2\u6570\u4f18\u5316<\/h3>\n

      3.1 \u5ef6\u65f6\u4e0e\u5c01\u9501\u65f6\u95f4\u534f\u540c\u8bbe\u7f6e<\/h4>\n

      \u4e24\u4e2a\u5173\u952e\u65f6\u95f4\u53c2\u6570\u7684\u914d\u5408\u76f4\u63a5\u5f71\u54cd\u4f7f\u7528\u4f53\u9a8c：<\/p>\n\n\u53c2\u6570\u7ec4\u5408\u9002\u7528\u573a\u666f\u5178\u578b\u503c\u914d\u7f6e<\/tr>\n\n\n\n\n
      \u77ed\u5ef6\u65f6+\u77ed\u5c01\u9501<\/td>\n\u5b89\u9632\u62a5\u8b66\u7cfb\u7edf<\/td>\n\u5ef6\u65f68s+\u5c01\u95012.5s<\/td>\n<\/tr>\n
      \u957f\u5ef6\u65f6+\u957f\u5c01\u9501<\/td>\n\u81ea\u52a8\u7167\u660e\u7cfb\u7edf<\/td>\n\u5ef6\u65f660s+\u5c01\u950110s<\/td>\n<\/tr>\n
      \u53ef\u91cd\u590d\u89e6\u53d1<\/td>\n\u4eba\u5458\u5bc6\u96c6\u533a\u57df<\/td>\nH\u8df3\u7ebf\u6a21\u5f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      # Raspberry Pi\u4e0b\u7684\u53c2\u6570\u52a8\u6001\u8c03\u6574\u793a\u4f8b
      \nimport RPi.GPIO as GPIO
      \nimport time<\/p>\n

      GPIO.setmode(GPIO.BCM)
      \nPIR_PIN = 17
      \nGPIO.setup(PIR_PIN, GPIO.IN)<\/p>\n

      def adjust_parameters():
      \n while True:
      \n val = GPIO.input(PIR_PIN)
      \n if val:
      \n # \u6839\u636e\u89e6\u53d1\u9891\u7387\u52a8\u6001\u8c03\u6574\u5c01\u9501\u65f6\u95f4
      \n active_count = 0
      \n start_time = time.time()
      \n while time.time() – start_time < 10: # 10\u79d2\u91c7\u6837\u7a97\u53e3
      \n if GPIO.input(PIR_PIN):
      \n active_count += 1
      \n time.sleep(0.1)<\/p>\n

      if active_count > 5: # \u9ad8\u9891\u89e6\u53d1\u533a\u57df
      \n set_block_time(5) # \u5ef6\u957f\u5c01\u9501\u65f6\u95f4
      \n else:
      \n set_block_time(2.5) # \u9ed8\u8ba4\u5c01\u9501\u65f6\u95f4<\/p>\n

      3.2 \u6297\u7535\u78c1\u5e72\u6270\u8bbe\u8ba1<\/h4>\n

      \u5728\u5de5\u4e1a\u73af\u5883\u4e2d\u6613\u53d7\u5e72\u6270，\u53ef\u91c7\u53d6：<\/p>\n

        \n
      • \u7535\u6e90\u7aef\u5e76\u8054100\u03bcF\u7535\u89e3\u7535\u5bb9+0.1\u03bcF\u9676\u74f7\u7535\u5bb9<\/li>\n
      • \u4fe1\u53f7\u7ebf\u4f7f\u7528\u53cc\u7ede\u7ebf\u6216\u5c4f\u853d\u7ebf<\/li>\n
      • \u6a21\u5757\u4e0e\u91d1\u5c5e\u5916\u58f3\u95f4\u52a0\u88c5\u7edd\u7f18\u57ab\u7247<\/li>\n<\/ul>\n

        4. \u5178\u578b\u5e94\u7528\u7535\u8def\u8bbe\u8ba1\u7cbe\u8981<\/h3>\n

        4.1 \u4f4e\u529f\u8017\u7535\u6c60\u4f9b\u7535\u65b9\u6848<\/h4>\n

        \u91c7\u7528TP4056\u5145\u7535\u7ba1\u7406\u82af\u7247+3.7V\u9502\u7535\u6c60\u7684\u4f9b\u7535\u7cfb\u7edf，\u914d\u5408MOSFET\u5b9e\u73b0\u81ea\u52a8\u5524\u9192：<\/p>\n

        [\u9502\u7535\u6c603.7V] \u2192 [TP4056\u5145\u7535\u6a21\u5757] \u2192 [\u5347\u538b\u81f35V] \u2192 [HC-SR501]
        \n \u2502
        \n [ESP8266\u4f4e\u529f\u8017\u6a21\u5f0f]
        \n \u2502
        \n[\u4fe1\u53f7\u89e6\u53d1] \u2192 [MOSFET\u5f00\u5173] \u2192 [\u6267\u884c\u5668\u7535\u8def]<\/p>\n

        \u6ce8\u610f：\u9700\u5c06\u6a21\u5757\u7684VCC\u4e0eOUT\u5f15\u811a\u901a\u8fc71N4148\u4e8c\u6781\u7ba1\u9694\u79bb，\u9632\u6b62\u53cd\u5411\u7535\u6d41<\/p>\n

        4.2 \u591a\u6a21\u5757\u7ec4\u7f51\u7b56\u7565<\/h4>\n

        \u5927\u578b\u533a\u57df\u76d1\u63a7\u53ef\u91c7\u7528\u591a\u4e2aHC-SR501\u7ec4\u7f51：<\/p>\n

      • \u4e32\u8054\u6a21\u5f0f：\u5404\u6a21\u5757OUT\u4fe1\u53f7\u901a\u8fc7\u4e8c\u6781\u7ba1\u9694\u79bb\u540e\u5408\u5e76<\/li>\n
      • \u5e76\u8054\u6a21\u5f0f：\u914d\u5408\u903b\u8f91\u95e8\u7535\u8def\u5b9e\u73b0\u533a\u57df\u89e6\u53d1\u5224\u65ad<\/li>\n
      • \u667a\u80fd\u5206\u6790：\u901a\u8fc7MCU\u5bf9\u591a\u8def\u4fe1\u53f7\u8fdb\u884c\u65f6\u7a7a\u5173\u8054\u5206\u6790<\/li>\n

        \/\/ STM32\u591a\u8def\u4fe1\u53f7\u5904\u7406\u793a\u4f8b
        \nvoid HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
        \n static uint32_t last_trigger[3] = {0};
        \n uint8_t module_id;<\/p>\n

        switch(GPIO_Pin) {
        \n case PIR1_PIN: module_id=0; break;
        \n case PIR2_PIN: module_id=1; break;
        \n case PIR3_PIN: module_id=2; break;
        \n }<\/p>\n

        uint32_t current = HAL_GetTick();
        \n if(current – last_trigger[module_id] > 200) { \/\/ \u6d88\u6296\u5904\u7406
        \n track_movement_pattern(module_id, current);
        \n }
        \n last_trigger[module_id] = current;
        \n}<\/p>\n

        5. \u521b\u65b0\u5e94\u7528\u573a\u666f\u62d3\u5c55<\/h3>\n

        \u7a81\u7834\u4f20\u7edf\u5b89\u9632\/\u7167\u660e\u9886\u57df，\u5f00\u53d1\u65b0\u578b\u5e94\u7528\u6a21\u5f0f：<\/p>\n

          \n
        • \u884c\u4e3a\u5206\u6790：\u901a\u8fc7\u89e6\u53d1\u65f6\u5e8f\u5224\u65ad\u4eba\u5458\u884c\u8d70\u65b9\u5411<\/li>\n
        • \u8282\u80fd\u63a7\u5236：\u4e0e\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u8054\u52a8\u4f18\u5316\u7a7a\u8c03\u542f\u505c<\/li>\n
        • \u975e\u63a5\u89e6\u4ea4\u4e92：\u7279\u5b9a\u52a8\u4f5c\u6a21\u5f0f\u8bc6\u522b（\u5982\u6325\u624b\u63a7\u5236）<\/li>\n<\/ul>\n

          \u5b9e\u9645\u9879\u76ee\u4e2d，\u5c06HC-SR501\u4e0e\u6beb\u7c73\u6ce2\u96f7\u8fbe\u878d\u5408\u4f7f\u7528，\u53ef\u5b9e\u73b0\u5b58\u5728\u68c0\u6d4b\u4e0e\u79fb\u52a8\u68c0\u6d4b\u7684\u4f18\u52bf\u4e92\u8865\u3002\u67d0\u667a\u80fd\u697c\u5b87\u6848\u4f8b\u663e\u793a，\u8fd9\u79cd\u7ec4\u5408\u4f7f\u8bef\u62a5\u7387\u964d\u4f4e82%，\u540c\u65f6\u80fd\u8017\u51cf\u5c1137%\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

          HC-SR501\u4eba\u4f53\u611f\u5e94\u6a21\u5757\u5b9e\u6218\u907f\u5751\u6307\u5357：\u4ece\u539f\u7406\u5230\u8c03\u8bd5\u7684\u6df1\u5ea6\u89e3\u6790
          \n\u5728\u667a\u80fd\u5bb6\u5c45\u548c\u7269\u8054\u7f51\u9879\u76ee\u4e2d，\u4eba\u4f53\u7ea2\u5916\u611f\u5e94\u6a21\u5757\u56e0\u5176\u975e\u63a5\u89e6\u5f0f\u68c0\u6d4b\u7279\u6027\u6210\u4e3a\u6838\u5fc3\u7ec4\u4ef6\u4e4b\u4e00\u3002HC-SR501\u4f5c\u4e3a\u7ecf\u5178\u578b\u53f7，\u5176\u5b9e\u9645\u5e94\u7528\u5374\u5e38\u56e0\u73af\u5883\u5e72\u6270\u3001\u5b89\u88c5\u4e0d\u5f53\u7b49\u95ee\u9898\u5bfc\u81f4\u8bef\u89e6\u53d1\u3002\u672c\u6587\u5c06\u76f4\u51fb\u4e94\u5927\u5178\u578b\u75db\u70b9，\u901a\u8fc7\u70ed\u91ca\u7535\u539f\u7406\u5256\u6790\u548c\u5b9e\u6218\u6848\u4f8b，\u63d0\u4f9b\u53ef\u843d\u5730\u7684\u89e3\u51b3\u65b9\u6848\u3002
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