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一种手持式电力线载波频谱分析仪的研制(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2016年03期
Page:
149-155
Column:
研究论文
publishdate:
2016-05-18

Article Info:/Info

Title:
Research and design of power line carrier spectrum analyzer based on STM32F407
Article ID:
1000-2006(2016)03-0149-07
Author(s):
QI Liang12 ZHAO Maocheng1*
1. College of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. Center for Analysis and Testing, Nanjing Normal University, Nanjing 210046, China
Keywords:
wide frequency domain spectrum analysis 220V power line carrier communication interference STM32F407
Classification number :
TM935.13
DOI:
10.3969/j.issn.1000-2006.2016.03.025
Document Code:
A
Abstract:
The V-type artificial main power network and a signal analyzer are usually employed coordinately to check the power line carrier communication equipment. However, it is inconvenient in field tests and the analyzer is expensive. A handheld spectrum analyzer with STM32F407 CPU was designed to identify the interference of 220 V power line. The filter circuit of carrier wave was made up of a series of RC high-pass filter and one-pole active high-pass filter. The hardware was simulated by combining software of Multisim and TINA-TI, in order to verify its capacity of carrier extraction. The carrier signal was sampled by STM32F407 chip, transformed by fast Fourier transform(FFT)algorithm into the frequency spectrum and displayed on an LCD screen. Experimental results showed that this handheld spectrum analyzer could capture wideband signals from 40 kHz to 500 kHz and analyze frequency spectrum of various power line carrier modules accurately and rapidly. Comparatively, the advantages of the proposed power line carrier spectrum analyzer are portable and cheap.

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Last Update: 2016-06-30