Indoor environment monitors on the market have problems like relatively monadical measurement parameters

poor real-time and low accuracy of measurement.To solve these problems

a small size multi-parameter indoor environment real-time monitor based on CPLD is developed.Highly integrated CPLD optimized circuit structure

and its parallel operation mode ensure multiple signal acquisition of 9 indicators at the same time

which greatly improved the instrument in real time.Experimental results show that multi-parameter indoor environment real-time monitor possess high measurement precision

good real-time

reliable performance and its metrics are able to meet the national standard.