Design and Implementation of a High-Performance and Low-Power Programmable Embedded Weak Signal Processing Platform

摘要

This article first introduces the relevant knowledge of weak signal detection, introduces the characteristics of weak signals, the current situation at home and abroad, etc., analyzes the application prospects of low-cost weak signal acquisition systems, and proposes the highperformance low-power programmable embedding. The combination of formula and virtual instrument forms the idea of embedded weak signal processing system. Then, for the embedded weak signal processing platform, a solution cantered on FPGA and LabViewis proposed. Refine the design plan, select a suitable development platform for the amplification and filtering, AD sampling, transmission control and system software, and give the basis. Then analyze, design and develop the components of the system according to the solution. The embedded system completes the functions of instruction interpretation, sampling control, and data reading and writing. At the same time, the modification of the USB firmware makes the transmission port exclusive to the acquisition device. The software system had the ability to interact with the device and process digital signals, and realizes the host computer Reproduction and storage of sampled signals. Finally, the system was debugged. Through the debugging of various hardware and software modules, as well as overall debugging, the processing function of weak signals is realized.