"基于单片机的单相数字电功率表设计及应用研究"。

The thesis "Design of Single-Phase Digital Electric Power Meter Based on MCU" introduces a novel approach to measuring electric power using microcontroller technology. By utilizing the AT89C52 microcontroller as the central processor, the system is able to accurately calculate phase angle using the zero-crossing comparison method, and ultimately determine the power consumption of the electrical grid. The measured values are then displayed on a liquid crystal display for easy viewing. The hardware circuit and software program flowchart of the system are also detailed in the thesis, covering key aspects such as AC signal data sampling and processing, analog-to-digital conversion, microcontroller application and programming, as well as LCD display functionality. As society continues to advance towards digitalization, information technology, and automation, the digital power meter design presented in this thesis represents a significant improvement over traditional analog meters. Its key advantages include strong anti-interference capabilities, high accuracy, scalability, and ease of integration, making it a valuable contribution to the field of research and development. In summary, the design of a single-phase digital electric power meter based on microcontroller technology offers a more advanced and reliable solution for measuring power consumption. With its innovative features and benefits, this system is well-positioned to meet the growing demands of modern electrical monitoring and control applications.