Hazardous Gas Detecting Method Applied in Coal Mine

Detection Robot

Abstract:

As one of the largest coal production and consumption countries in the world, many

countries are having related accidents occurred frequently such as gas explosion, flood, breaking

out of fire during the exploitation of coal mine. Coal Mine Detection Robot can be substituted or

partial substituted for emergency workers to enter the mine shaft disaster site and detect

hazardous gas and do some environmental exploration and surveying task.

Coal Mine Detection Robot uses to detect hazardous gas simultaneously. The principle of

gas survey meter of infra-red spectrum is according to the selectively absorption of infrared

radiation by the mash gas, CO to achieve the detection of their concentration. The advantages of

this kind of hazardous gas detecting are: simultaneously and rapidly detecting hazardous gas and

high sensitivity, good selectivity and fast response. Otherwise, it is easy to be taken by robot due

to its simple and light structure, have a lager detection range and probe is not easy failure to be

poisoning and aging.

Proposed System:

The research of Coal Mine Detection Robot can make the coal mine detection works

improving a lot, and reduce the casualties caused by mine accident. It will be substituted or

partial substituted for emergency workers to enter the worksite and to carry out environmental

prospecting and surveying task. Here, in this project using Zigbee technology the details gets

communicated and so we can identify the situation happening under the ground. This robot can

go into explosion environment and detect gas content and temperature. Here using CCTV the

images are captured in the coal mine and monitored in the display unit. The gas and temperature

details are sensed through corresponding sensors, and fed to the microcontroller unit.

Microcontroller unit, in turn sends that digital data to control section through Zigbee

communication. In the control section, according to the sensor details the robotic movement is

done through keypad unit, using the microcontroller the keypad inputs are taken as input and that

corresponding details are sent through Zigbee communication. According to the keypad input

received the robot is controlled by microcontroller in the robot section. In order to control the

motors used in the robot, we use relays in the robot section, relays are nothing but the

electromagnetic switch, which activates the motors according to the given input from the

microcontroller.

Block Diagram:

Control Section:

Power Supply

KEYPAD

8051

Micro

Controller LCD

Buzzer

Robot Section:

Motor

Driver

PIC

Micro

Controller

Power Supply

Temperature

Sensor

Motor

Driver

R

O

B

O

T

CCTV

Gas Detection

Sensor

Hardware Requirements:

8051 Microcontroller

PIC Microcontroller

Keypad

Temperature and Gas Sensor

Zigbee Transceiver

CCTV

LCD and Buzzer

Relay Driver

Robot Mechanism

Software Requirements:

Embedded C

Keil C Compiler

Advantages:

This robot has automatic collision avoidance system.

It easily carries food, medicine to victims, while other robots not do.

Application:

It can be used in coal mine industries