PIR stands for Pyroelectic Infrared Radial Sensor or Passive Infrared Sensor. PIR is an electronic sensor which detects the changes in the infrared light across certain distance and gives out an electrical signal at its output in response to a detected IR signal. It can detect any infrared emitt...
Serial.begin(9600); pinMode(pirPin, INPUT); } void loop() { PIRSensor(); } void PIRSensor() { if(digitalRead(pirPin) == HIGH) { if(lockLow) { PIRValue = 1; lockLow = false; Serial.println("Motion detected."); delay(50); } takeLowTime = true; } if(digitalRead(pirPin) =...
...Python库GPIO ZERO(GPIO引脚指图中这部分): sudo apt install python3-gpiozero 安装后,就可以运行主要的程序了(Python编写),这部分的原理,是在传感器触发后...,将风扇启动10分钟: FAN_ON_DURATION = 10 * 60 # 10 min outpin = LED(22)pir= MotionSensor(27, sample_rate=1...
PIR_PIN = board.D2 # Pin number connected to PIR sensor output wire. # Setup digital input for PIR sensor: pir = digitalio.DigitalInOut(PIR_PIN) pir.direction = digitalio.Direction.INPUT # Setup digital output for LED: led = digitalio.DigitalInOut(LED_PIN) led.direction = digitalio....
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led = machine.Pin(15, machine.Pin.OUT) buzzer = machine.Pin(14, machine.Pin.OUT) def pir_handler(pin): print("ALARM! Motion detected!") for i in range(50): led.toggle() buzzer.toggle() utime.sleep_ms(100) sensor_pir.irq(trigger=machine.Pin.IRQ_RISING, handler=pir_handler) ...
#definepirPin2intcalibrationTime=30;longunsignedintlowIn;longunsignedintpause=5000;booleanlockLow=true;booleantakeLowTime;intPIRValue=0;voidsetup(){Serial.begin(9600);pinMode(pirPin,INPUT);}voidloop(){PIRSensor();}voidPIRSensor(){if(digitalRead(pirPin)==HIGH){if(lockLow){PIRValue=1;lockLow=...
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intsensor=2;// the pin that the sensor is atteched to intstate=LOW;// by default, no motion detected intval=0;// variable to store the sensor status (value) voidsetup(){ pinMode(led,OUTPUT);// initalize LED as an output pinMode(sensor,INPUT);// initialize sensor as an input ...
是一种被广泛应用于安防领域的传感器,全称为Passive Infrared Sensor。它通过感知人体发出的红外线辐射来检测周围环境中的运动。PIR运动传感器主要由红外感应器、光学透镜和信号处理电路组成。 PIR运动传感器的工作原理是基于人体发出的红外线辐射。当有人或动物进入传感器的监测范围内时,它会感知到周围环境的红外线变化,并...