• 工程設計專題

人體紅外線感測模組

• 講義

• Pyroelectric("Passive") InfraRed Sensor

  • Python 程式碼

     

    import RPi.GPIO as GPIO
    import time
    
    GPIO.setmode(GPIO.BOARD)
    
    PIR_PIN = 11
    LED_PIN = 12
    GPIO.setup(PIR_PIN, GPIO.IN, pull_up_down = GPIO.PUD_UP)
    GPIO.setup(LED_PIN, GPIO.OUT)
    
    def callback_function(channel):
        print("Motion detected", channel)
        for i in range(3) :
            GPIO.output(LED_PIN, GPIO.HIGH)
            time.sleep(0.5)
            GPIO.output(LED_PIN, GPIO.LOW)
            time.sleep(0.5)
        
    try :
        GPIO.add_event_detect(PIR_PIN, GPIO.RISING, callback = callback_function, bouncetime=200)
        while True :
            time.sleep(1)
    except KeyboardInterrupt:
        print("Exiting...")
        GPIO.cleanup()
    finally :
        GPIO.cleanup()