Authors
Ren Guan
Affiliations
- Department of Computer Science North China Electric Power University (Baoding);
- Hebei Key Laboratory of Knowledge Computing for Energy & Power;
- Engineering Research Center for Intelligent Computing of Complex Energy Systems, Ministry of Education corresponding author(s): Yumei Ma (yumeim@ncepu.edu.cn)
Abstract: This project is designed and implemented based on the field programmable gate array (FPGA) and an embedded data acquisition system for traveling wave fault detection. The entire sampling system is divided into hardware and software parts. The hardware part is based on the Xilinx XC7Z020CLG400 chip. It fully utilizes the characteristics of its processing system (PS) and programmable logic (PL) collaborative architecture, and completes the schematic design, PCB wiring and functional testing of the entire board to meet the requirements of high-speed synchronous sampling and signal integrity. The PL part drives the dual-chip AD9238 analog-to-digital converter to achieve synchronous sampling of four signals by generating a synchronous sampling clock, supporting a sampling rate of up to 65MHz. At the same time, it cooperates with Block RAM to achieve efficient data cache and read, and provides an AXI4-Lite bus interface to the outside, supporting dynamic configuration of sampling parameters and interrupt feedback control on the PS side. The main task of the PS part is the processing of data flow, which includes peripheral initialization after the device is powered on, building the UDP server to provide external access to sampled data, and parameter configuration and data flow control of the entire sampling process. During the system functional testing phase, the sine signal is input into the system through an external signal source, and the synchronization of the system’s multi-channel sampling was evaluated. It was found that the optimal operating frequency range of the board is 450kHz to 10MHz. At this time, the jitter of the board’s multi-channel synchronous sampling can be controlled to the greatest extent. Finally, the potential application prospects of the designed acquisition system in the actual engineering environment are also discussed, and will play a more important role in many fields such as power monitoring.
Welcome to access the latest version through the button below.
