一种应用在电力检测设备的基于ADC芯片的数据采集系统
By employing a system clock synchronization scheme using FPGA, ADC chip, and CNV processing circuit in the power detection equipment, the problem of asynchronous ADC sampling clock and system clock was solved, enabling the acquisition of traveling wave signals across the entire frequency range and the alignment of multi-module data, thereby improving the system's stability and sampling accuracy.
CN122131005BActive Publication Date: 2026-07-17ZHILIAN XINNENG POWER TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHILIAN XINNENG POWER TECH CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
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Figure CN122131005B_ABST
Abstract
本发明涉及一种应用在电力检测设备的基于ADC芯片的数据采集系统，包括数据采集电路采集电压行波信号和电流行波信号，进行信号调理、阻抗匹配及差分驱动处理；ADC芯片对数据采集电路输出的信号进行模数转换；FPGA芯片接收数字信号，进行缓存、处理和数字滤波运算，提取电力系统中工频信号和行波信号特征，进行数据同步处理；CNV处理电路对系统主时钟信号进行同步处理与边沿整形，输出同步信号至FPGA，使ADC芯片的采样时序与系统主时钟保持同步；本发明将系统主时钟转换并驱动ADC采样触发路径，实现全系统时钟统一；经缓冲驱动与触发整形后，CNV信号边沿锐利、抖动小，适合高速ADC采样；长期运行中采样点不会相对系统时钟漂移，便于多模块数据对齐与同步处理。
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