System for monitoring concentration of NO2 and CO gasses on landfill sites

This paper describes hardware system for monitoring gas migration inside of borehole wells on landfill site. Hardware unit is designed to show the applicability of such device in terrain conditions. Therefore, we used easily available and cheap sensors for gases such as nitrogen dioxide and carbon monoxide. The solution can easily be expanded with other types of gas sensors, if necessary. Temperature and humidity sensors are installed for the measurement compensation that depends on these parameters. The device includes GPRS/GPS modem that allows sending data to server application for further processing. Also, the control of device via server application and SMS service has been implemented. Integration of microcontroller inside sensor system allows implementation of automatic monitoring and support for management of the outer actuators and alarms. Simple client application displays the results of measurements in real time, if necessary, or in the adjustable time intervals, which is useful for battery supplied operation.