Summary of Human Body Infrared Smoke Temperature Alarm System with Arduino
This project is a low-cost Human Body Infrared Smoke Temperature Alarm System operating on DC 5V. It utilizes an Arduino to monitor room temperature via the DH11 module, smoke levels with the MQ2 sensor, and human movement using a PIR motion sensor. The system triggers alarms and specific colored LEDs (red for heat, yellow for smoke, blue for motion) when thresholds are exceeded. An LCD1602 board displays settings and real-time status, allowing users to adjust temperature limits using two keys.
Parts used in the Human Body Infrared Smoke Temperature Alarm System:
- DC 5v power supply
- DH11 Temperature Module
- Buzzer
- Red LED
- MQ2 Smoke Sensor
- Yellow LED
- Pyroelectric Infrared PIR Motion Sensor
- Blue LED
- Arduino
- 1602 LCD Board
- Two keys
Web site:
http://www.instructables.com/id/Human-Body-Infrared-Smoke-Temperature-Alarm-System/
Project Summary:
The Human Body Infrared Smoke Temperature Alarm System works under the DC 5v voltage and uses the DH11 Temperature Module to detect the room temperature. When the module detects the temperature is higher than the maximum, the buzzer alarms and the red LED lights. When the MQ2 Smoke Sensor detects the smoke concentrations which is beyond the maximum , the buzzer alarms and the yellow LED lights. When the Pyroelectric Infrared PIR Motion Sensor detects the human movement, the Buzzer alarms and the blue LED lights. This system is a simple Smoke Temperature Alarm System which can be made simple at low cost and it suitable for warehouse and factory and so on.
Full Project:
Functions:
1) When start up, the 1602 LCD Board displays the setting interface.
2) Use two keys to set the maximum and minimum temperature.
3) When the DH11 detects the temperature is lower than the maximum, the buzzer dose not alarm, the red led dose
not light.
4) When the DH11 detects the temperature is higher than the maximum, the buzzer alarms, the red LED lights.
5) When the MQ2 detects the smoke concentrations which is lower than the maximum, the buzzer does not alarm
while the yellow LED does not light.
6) When the MQ2 detects the smoke concentrations which is higher than the maximum, the buzzer alarms, and the
yellow LED lights.
7) When the Pyroelectric Infrared PIR Motion Sensor does not detect the human movement, the buzzer will not alarm, the LCD1602 board displays RT:N.
8) When the Pyroelectric Infrared PIR Motion Sensor detects the human movement, the buzzer will alarm, the
LCD1602 board displays RT:Y.
For more detail: Human Body Infrared Smoke Temperature Alarm System with Arduino
- What voltage does the system operate under?
The system works under the DC 5v voltage. - How does the system indicate high temperature?
When the DH11 detects temperature higher than the maximum, the buzzer alarms and the red LED lights. - Does the MQ2 sensor trigger an alarm for low smoke?
No, when smoke concentrations are lower than the maximum, the buzzer does not alarm while the yellow LED does not light. - What happens when the PIR sensor detects human movement?
The buzzer alarms, the blue LED lights, and the LCD1602 board displays RT:Y. - How can users set the temperature limits?
Users use two keys to set the maximum and minimum temperature. - What does the LCD display show when no human movement is detected?
The LCD1602 board displays RT:N when the PIR sensor does not detect human movement. - Can this system be used in factories?
Yes, it is suitable for warehouses and factories. - Which color LED lights up when smoke is detected?
The yellow LED lights when the MQ2 detects smoke concentrations beyond the maximum.
