The main aim of the project is to design a safety helmet for coal miners. The system is a cost effective IOT based coal mine supervising system. This project is a realized real-time surveillance with early-warning intelligence on temperature; leakage of gas in mining area, LDR sensor based light intensity detection and alerting the control station using Wi-Fi module. The system is used to reduce potential safety problems in coal production.   This system has gas sensor, temperature sensor, LDR sensor interfaced to the microcontroller and the sensors information is transmitted to the control station using the Wi-Fi module. The system gives both audible and visual alerts using LCD and buzzer. The system also monitors the LPG gas leakages using gas detection sensor, fire using temperature sensor, in the mines and if it exceeds the threshold level, it alerts through alarm using buzzer and also displays on LCD to the user. The LDR sensor detects the light intensity and automatically controls the light using relay switch. This sensors output is given to the Microcontroller for further processing to send the monitored parameter value to the control station using Wi-Fi module.      

Main features of this project:  

1. Low power consumption.
2. Highly sensitive.
3. Implementation of wireless communication.
4. Implementation of Real time embedded system, which involves hardware and software interaction.

         

The major building blocks of this project are:  

1. Regulated power supply.
2. Gas sensor.
3. Temperature sensor.
4. LDR sensor.
5. Relay.
6. Buzzer with driver.
7. Light.
8. LCD with driver.
9. Crystal
10. LED indicators.
11. Microcontroller.
12. Reset Button.
13. Crystal Oscillator.
14. Wi-Fi module.
15. Android phone.

         

Software’s used in the project:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

         

Regulated Power Supply:

             

Block Diagram:            

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