Human Body Infrared Smoke Temperature Alarm System with Arduino

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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.

Step 1: Connect the 5v Voltage and the GND of the ICSTATION MEGA

Step 10: The experimental effect:

Circuit diagram:

Bill of Materials:

1.Arduino MEGA 2560

2.830 Point Solderless PCB Bread Board MB-102 Test DIY

3.Active Buzzer Module for Arduino

4.42pcs Breadboard Plug Wire Cable Tire

5.3 Tact Switches 4 Legs

6.5pcs 2K Resistor

7.5v DC Voltage

8.1602A HD44780 Character LCD Display Module LCM Blue Backlight

9.DHT11 Digital Humidity Temperature Sensor

10.2K 202 Blue White Resistance Adjustable Resistor

11.MQ-2 Gas Sensor Module Smoke Methane Butane Detection for Arduino

12.Pyroelectric Infrared PIR Motion Sensor Detector Module

13.3 LED Lights

Software & Code Snippets:

Code for your reference

http://www.icstation.com/newsletter/eMarketing/Mega2560_Alarm_code.zip

PCB: