Background:
Coal is one of the main energy sources in China and plays an irreplaceable role in social and economic development. Methane is the main component of gas explosion in the process of coal mining. This can be detected with a CH4 gas sensor.
At present, the technology level of sensors used to detect methane concentration in China is relatively backward, with poor measurement stability, narrow detection range and easy to be affected by other gases.
At the same time, the workload of system maintenance is relatively large, which reduces the reliability and credibility of detection data of explosive gases such as methane.
Therefore, how to quickly and stably detect and warn the concentration of methane gas in coal mines is of great significance to prevent coal mine gas leakage accidents.
Methane sensor selection:
The CH4 gas sensor is used to detect the concentration of methane in air. When the concentration exceeds the preset alarm value, sound and light alarm signal will be sent to remind users to take safety measures in time. Prevent explosion and poisoning accidents, so as to ensure the safety of life and property.
The CH4 gas sensor adopts electrochemical sensor, which has the characteristics of rapid response, sensitive, strong anti-interference ability. After JXCT unique compensation algorithm, multi-stage standard gas calibration, it also has the characteristics of long life, high precision, high repeatability and high stability.
The methane sensor comes with a large LCD display and a rugged case with a protection rating up to IP65, making it suitable for use in most harsh field environments.
The methane gas sensor adopts DC power supply, RS485 signal output, standard Modbus-RTU communication protocol, Modbus address can be set, baud rate can be changed, the communication distance is up to 2000 meters.
Functions of methane gas detection and alarm system:
(1) Real-time monitoring of the content of methane gas and toxic gas near the coal mine environment, and real-time alarm when the concentration reaches a certain level.
(2) Watch the scene situation in real time through the monitoring center of the upper computer system.
(3) Record the above monitoring data in real time in the monitoring center and manage the data centrally.
(4) the user in the first place in the platform to open the alarm function, after the data overrun, and by sound and light alarm, the LED screen display a variety of ways, such as the scene alarm information, and then the platform will give the specified send SMS alarm or email alarm contacts, on the platform of numerical font color will become red, immediately inform my manager, to take measures as soon as possible to avoid the loss.
(5) The platform provides historical query, historical track query and historical registration query of various data. It also has the function of data storage. Historical data can be stored on the cloud platform for two years.
(6) The management software provides event query, alarm configuration and query, and environment parameter viewing. Users can log in to the cloud platform anytime and anywhere to check device status, view real-time monitoring data, download and print data, etc.