The project is to solve the problem of preventing burns by using the PIR motion sensor and IR non-contact temperature sensor. When the infrared temperature sensor detects a temperature above 40 degrees Celsius and the PIR motion sensor simultaneously detects the movement, the LED is lit, used to remind the user to prevent the user from touching the fever.
Be
Hardware components:
PIR motion sensor
MLX90614
led
Jumper
Particle argon
Breadboard
Resistance 220Ω
flow chart:
Schematic:
PIR motion sensor and LED:
MLX90614 Infrared Temperature Sensor:
Really connected:
On the first test panel, there is a connection of the PIR motion sensor and an external LED and a 220Ω resistor and D7 LED on the test panel.
The PIR motion sensor has three connections.
The first voltage connected to 3.3 V
The second "data" connected to the D2 pin
The third connection to the GND pin
External LEDs are connected in series with 220Ω resistors connected to D4 and GND.
(PIR motion sensor and LED)
(Side view of PIR motion sensor and LED)
On the second test panel, it is connected to the MLX90614 temperature sensor.
The temperature sensor has four connections.
The first connection is SDA pin
The second connection is SCL pin
The third connection is GND
The fourth connection is 3.3 V voltage
(Infrared Non-contact Temperature Sensor)
(Side view of infrared non-contact temperature sensor)
test:
The alarm system is only lit as long as the temperature exceeds its threshold. The collected data is the number of instances of motion sensors and temperature sensors simultaneously triggered. Where only the temperature sensor is detected, there is no data from the motion sensor. This is because no motion is detected, so the motion sensor is to be triggered, so the two LEDs have not triggered. In the second half of the chart, two sensors are shown, causing two LEDs to light.
Real-time data: Data 1, data 2
(Sports and date data)
(Temperature and date data)
(IFTTT motion sensor notification system)
Appendix:
Sports sensor:
(Generate this code to detect the movement. Once the motion is detected, you will notify the code to light the outside LED and D7 LED pin)
INT INPUTPIN = D2; // Select the input pin (for PIR sensor)
INT ledpin = D4; // LED pin
INT pirState = low; // We started, assuming no motion
INT VAL = 0; // Read the variable of the pin status
INT CALIBRATETIME = 5000;
INT count = 0;
// Waiting for a calibration
Void setup () {
PINMODE (D2, INPUT);
PINMODE (D7, OUTPUT);
PINMODE (D4, OUTPUT);
Be
Be
Particle.subscribe ("Hot", Test1);
// Declaration Sensor is input
}
Void loop () {
Be
VAL = DIGITALREAD (D2);
}
Be
Void Test1 (Const Char * Event, Const Char * DATA) {
Be
Be
IF (VAL == High) {
// The current state is stationary
// is changed
/ / Announce this change by issuing an event
// We just opened
// DigitalWrite (D7, HIGH);
// delay (20000);
// DIGITALWRITE (D7, Low);
Count ++; // count = count +1
Particle.publish ("PhotonMotion", "Motion Detected", Private;
Be
DELAY (1000);
//For (i=0;i<80;i+) {
DigitalWrite (D4, HIGH);
DigitalWrite (D7, HIGH);
DELAY (500); // Waiting for 1MS
DigitalWrite (D4, Low);
DigitalWrite (D7, Low);
// DigitalWrite (D5, HIGH);
// delay (500); // Wait for 1ms
}
Temperature sensor:
(Whenever the temperature exceeds 40 degrees Celsius, this code will be generated to release "high temperature" event)
// This #include statement is automatically added by the particle IDE
// LedwithTemp
#include
Float Object_Tempc;
ADAFRUIT_MLX90614 mlx = adafrouit_mlx90614 ();
Void setup () {
Mlx.begin ();
}
Void loop () {
Object_tempc = mlx.readObjectTempc ();
IF (Object_Tempc>40.0) {
String Temperature = String (Object_Tempc);
Particle.publish ("Hot", "Temperature", Private;
DigitalWrite (D2, HIGH);
// Release to the cloud
Be
}
//Serial.print ("Ambient = "); serial.print (mlx.readambientTempf ());
//Serial.print ("*f \TObject = "); serial.print (mlx.readObjectTempf ()); serial.println (" * f ");
DELAY (1500);
}
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