Power Line Noise Acquisition and Analysis System for the 0-50MHz Frequency Band

In this paper, a design scheme of power line noise acquisition and analysis equipment is proposed, which aims to effectively monitor and analyze noise data of power line noise, the hardware of the system mainly includes filter circuits, analog front-ends circuits, ADC sampling circuits, DAC circuits, digital processing circuits, etc., for the purpose of sampling high-frequency level data of power line noise. The system software processes this level data through steps such as decomposition and FFT (Fast Fourier Transform) conversion to analyze the power line noise signals. Then, by employing algorithm models, it quickly categorizes, displays, and plays back the noise frequency, intensity, and type of the interference. Thus, it provides a stable noise source for the design of power line communication systems' noise resistance performance and power consumption.