Measurement of atmospheric pollutants based on electrochemical sensors and digital signal processing

The current paper discusses the design of the pollution and communication system which is capable to measure the H2S levels in very low concentrations in ppb range. The system also reads the temperature and humidity values from the analog output values and send the measured values to the remote server via GSM/GPRS connection, which are stored in MySQL table for further analysis and visualization. This part represents the methods and algorithms to obtain the values of the analog inputs using digital signal processing of the data, measured by integrated 10-bit SAR ADC.