关键词: 氧化锆, 传感器, 动态调压电路, 模型预测控制

Abstract: In this paper, a MOS dynamic voltage regulation heating circuit was proposed to optimize the design performance of the oxygen concentration detection device. In this paper, the measurement principle of the zirconia sensor is described in detail, and the test device is developed with a 32-bit MCU as the main control core. The MOS dynamic voltage regulation heating circuit was innovatively designed, and the main control software control process was established. Significant progress has been made in achieving heating stability and accuracy using model prediction and PID control algorithms. Finally, according to the design, the actual product was made, and the calibration and experimental verification were carried out. After calibration, the detection device shows a high accuracy for detecting oxygen concentrations.

Key words: Zirconia, Sensor, dynamic voltage regulation circuit, model predictive control