Design of Online Detection System of Boiler Water Quality Based on STM32

Abstract Industrial boilers have strict requirements for water quality. It is necessary to adjust treatment measures and regular blowdown according the monitoring of phosphate soluble silica content in boiler avoid scaling, corrosion, deterioration steam quality, prevent major accidents. The traditional quality detection technology has a strong lag long time, which cannot meet real-time online detection. Aiming at requirement radical portable low-cost system based on STM32 was studied. pump valve flow path constructed with syringe equipped distribution valve, LED silicon photocell are used light source detector respectively, photoelectric part composed designed Z-shaped cell, reduces experimental cost; Design data acquisition circuit microcontroller 16-bit high-precision analogy-to-digital converter, as well constant-current drive driving sources, improve stability high precision automatic measuring instrument. test results show that can accurately detect concentrations