Design of Low-frequency Digital Phase Measurement Instrument
Abstract: This article describes the low-frequency digital phase-measuring instrument's overall design scheme, described in detail the various components of the system.The design smallest MCU system for the control of the core, by phase shaping module, phase measurement module, display module and other components.Where the phase measurement module signals are processed to be measured into the MCU, the MCU calculate the phase difference, to send to the display module displays.This design enables the real-time measurement phase, the measured signal frequency range of 20Hz ~ 20KHz.The system circuit structure is simple, reliable, easy to operate, compared with conventional phase-measuring instrument, having a processing speed, and good stability.
Key Words: Phase shaping; MCU; Phase measurement
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