87C552在同频信号间相位差测量中的应用

The Apply in Measuring Phase Difference Between Two Signals with the Same Frequency by the Chip Microcomputer of 87C552

介绍了利用 87C5 5 2定时器T2对同频信号间相位差的测量方案 ,该方案根据T2的捕捉寄存器对电流、电压过零时间捕捉来测量相位差 ,具有测量精确 ,快速、稳定等优点 。

This paper introduces a design for measuring phase difference between two signals with the same frequency by the T2 of the 87C552 microcontroller. This project surveys phase difference according to catch the time difference across zero between voltage and current by catching register of T2.It has some advantages, such as high precision measurement, high speed and stability. It can be used in the real-time system measuring phase difference.