Online Coal Dust Suppression System (CDSS)

The Coal Dust Suppression System is an ambient air quality monitoring and control system which monitors the air pollutants at areas near coal mines and initiates action to suppress air borne dust particles. The systemconsists of Coal Dust Suppression Units (CDSU), deployed at various locations at opencast coal mines, which senses the amount of coal-dust present in the air and activates the sprinklers when the dust content exceeds permissible limits. The sprinklers prevent coal-dust from becoming air-borne and also bring down dust particles in the air.The CDSU has provision for both wired and wireless activation of sprinklers.

In addition, the CDSU sends the sensed parameters to an Online Monitoring Software (OMS) running in a central server, where the data is displayed in an HMI and logged to database. This data is then used to generate daily reports about the ambient air quality with regards to the concentration of air pollutants - PM10, PM2.5, SO2, NO2, NO and CO.Fig.1 shows the typical architecture of the Coal Dust Suppression System.

CDSU Base
The Coal Dust Suppression Unit Base (CDSU Base) is an industrial grade dust monitoring unit which senses the concentration of PM10 and PM2.5 in the atmosphere and activates dust suppression sprinklers when the dust content exceeds safe permissible limit. CDSU Base has provision for wired and wireless activation of sprinklers. The CDSU features a wireless module which communicates with wireless slave device (CWS) which in turn activates motorized valves connected to the sprinklers. In addition, it sends the dust concentration values to Online Monitoring Software (OMS) using GPRS communication. The CDSU Base features a 3.5" display unit which displays the sensed parameters along with the status information of the unit. The unit is dust and water proof and is suitable for outdoor use.

CDSU Pro
The Coal Dust Suppression Unit Pro (CDSU Pro) is an advanced ambient air quality monitoring instrument which senses the concentration of PM10 and PM2.5 and toxic gases like SO2, NO2, NO and CO present in the ambient air. In addition, the device has sensors for ambient temperature and relative humidity.The CDSU Pro uploads the sensed parameters to Online Monitoring Software (OMS) using GPRS communication. The device features a 3.5" display which displays the sensed parameters along with the status information of the unit. The unit is dust and water proof and is suitable for outdoor use. The CDSU Pro is a cost-effective solution for continuous ambient air quality monitoring.

The Online Monitoring Software (OMS) is standalone application designed to acquire, process and display ambient air quality data received from CDSU Base and CDSU Pro. The software manages connectivity with CDSU's deployed in the field, process and store the received data, display on an HMI and generate reports.