我正在做一个辅助项目,一旦PIR传感器检测到运动,直流电机(2x)将打开5秒,然后关闭。如果运动停止了,直流马达就会关闭。
所以我的问题是,我没有达到我刚才提到的预期结果。从我的角度来看,我的运动传感器似乎就是自己断断续续的,直流电机在持续5秒后表现正常,但运动传感器显示尽管有运动,但仍有运动,这导致直流电机运行。直流电机应在有运动的情况下运行。
我已经在另一个arduino UNO和breadboard上尝试过这个硬件和组件,这个问题似乎与代码有关。
我还试着后退一步,看看是否可以让运动检测功能打开LED灯。在串行监视器中,似乎发现有运动被检测到,但实际上没有。
我也试着调整PIR传感器上的电位器,以及(调整灵敏度和时间)。我还试着切换“可重复”触发器和“不可重复”触发器,看看这是否有问题。
我试着换用9V电池,看看这是否影响了直流电机的性能。
我还仔细检查了一下,确保每根电线都放在正确的位置。
现在,下面是串行监视器..。对于我提供的给定代码。这就是它提供给我的。**请记住,我没有将任何运动放入arduino单元,并且出于某种奇怪的原因,它检测到有运动。
这是串行监视器显示的内容...
2:31:43.219 -> Motors are ON
02:31:43.219 -> Motion detected!
02:31:48.215 -> Motors are ON
02:31:48.249 -> Motors are OFF
02:31:48.249 -> Motion stopped!
02:31:53.232 -> Motors are ON
02:31:53.232 -> Motion detected!
02:31:58.220 -> Motors are ON
02:31:58.253 -> Motors are OFF
02:31:58.253 -> Motion stopped!
02:32:03.238 -> Motors are ON
02:32:03.238 -> Motion detected!
02:32:08.230 -> Motors are ON
02:32:08.265 -> Motors are OFF
02:32:08.265 -> Motion stopped!const int switchMotion=2;
const int motorPin=9;
const int motorPinB=8;
int motionState=0;
int motionDetected = LOW;
void setup() {
//Selecting as an input and output the switch and the motor
pinMode(switchMotion,INPUT);
pinMode(motorPin,OUTPUT);
pinMode(motorPinB, OUTPUT);
Serial.begin(9600); //Set serial out if we want debugging
delay(5000); //Allow time for the PIR Sensor to calibrate
}
void loop() {
motionState = digitalRead(switchMotion); // Reads the motion sensor
if(motionState == HIGH) // checks if Sensor is HIGH
{
digitalWrite(motorPin,HIGH); //turn on Motor A
digitalWrite(motorPinB,HIGH); //turn on Motor B
delay(5000); //runs for 5 seconds and stops
Serial.println("Motors are ON");
if (motionDetected == LOW) {
Serial.println("Motion detected!"); // print Motion Detected
motionDetected = HIGH; // update variable state to HIGH
}
else {
digitalWrite(motorPin,LOW); //turn off Motor A
digitalWrite(motorPinB,LOW); //turn off Motor B
Serial.println("Motors are OFF");
if (motionDetected == HIGH){
Serial.println("Motion stopped!");
motionDetected = LOW; // update variable state to LOW
}
}
}
}我们的目标是,一旦一个人靠近PIR运动传感器,直流电机就会打开一段设定的时间,当时间周期结束时,电机就会关闭,运动传感器会有一段设定的延迟时间来再次检测运动,以便直流电机再次打开。它应该是一个恒定的循环,当没有运动时,直流电机应该关闭。当有动静时,直流马达应该是开着的。例外情况是有冷却时间。
实际结果是
我希望motionDetected能正常工作,但当它测试它的时候,它读到有运动检测到/没有检测到运动,尽管没有真正的运动。我期望的结果是运动传感器能够正常工作,这样直流电机就可以相应地打开/关闭。
发布于 2020-01-02 08:04:09
我不确定我是否理解,但如果我是正确的,这不正是您正在寻找的:
const int switchMotion = 2;
const int motorPin = 9;
const int motorPinB = 8;
void setup() {
//Selecting as an input and output the switch and the motor
pinMode(switchMotion,INPUT);
pinMode(motorPin,OUTPUT);
pinMode(motorPinB, OUTPUT);
Serial.begin(9600); //Set serial out if we want debugging
delay(5000); //Allow time for the PIR Sensor to calibrate
}
void loop() {
if(digitalRead(switchMotion) == HIGH) // checks if Sensor is HIGH
{
Serial.println("Motion detected!");
digitalWrite(motorPin, HIGH); //turn on Motor A
digitalWrite(motorPinB, HIGH); //turn on Motor B
Serial.println("Motors are ON");
delay(5000); //runs for 5 seconds and stops
digitalWrite(motorPin, LOW); //turn off Motor A
digitalWrite(motorPinB, LOW); //turn off Motor B
Serial.println("Motors are OFF");
}
// You can add a delay here if you want
}发布于 2019-04-08 17:23:32
你的逻辑是混乱的。
If the sensor is low, nothing happens.
first run of loop after sensor turned high:
turn on the motors,
wait 5 seconds,
print "Motors are ON",
print "Motion detected",
set motionDetected HIGH.
second run of loop (if sensor is still high):
turn on the motors,
wait 5 seconds,
print "Motors are ON",
now motionDetected is HIGH so:
turn off motors
print "Motors are OFF"
print "Motion stopped"
set motionDetected LOW
second run of loop if (sensor is low again):
nothing happens -> motors stay on要解决此问题,请确保else属于正确的if!您希望在传感器为低电平时关闭电机,而不是在传感器为高电平且之前为高电平时关闭电机。
另外,打印的照片应该放在延迟之前。在实际检测到运动后5秒打印“运动检测到”有什么意义?
https://stackoverflow.com/questions/55567742
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