Water quality detection and purification system based on STM32

With the development of science and technology and the progress of society, our living standard and quality of life have been improved. Water is the source of people's life. No matter in our daily life or in industrial production, we cannot do without water, and we also have quality requirements for water quality. The multifunctional water quality detection and purification system is mainly controlled by STM32 and integrated with TDS conductivity detection circuit, turbidity detection sensor circuit, PH value detection sensor circuit and ultrasonic sensor. The system processes the data after the analog signals of each sensor are converted into digital signals and displays each information, calculates the liquid level difference through PID, and controls and regulates the water pump valve for water purification.