Design of High Precision pH Meter Based on STM32
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Xudong Cheng, Chaofan Li, Qingan Ding, Lei Yan, Xiaojuan Wang, Lijun Zhang, Zhenfei Dai and Junkai Li
To solve the problems of large volume, low detection accuracy and high cost, we design a pH meter based on ultra-low power consumption MCU. In order to meet the measurement accuracy, the pH meter has three-point calibration, automatic temperature compensation and other functions. The measurement results show that the pH value of the solution can be accurately measured by the pH meter, and the measurement accuracy has reached ± 0.02.
pH measure, Temperature compensation, Three-point calibration