Implementation method for FBG (fiber bragg grating) sensor hardware demodulation system based on FPGA and ARM

Abstract

The invention provides an implementation method for an FBG (fiber bragg grating) sensor hardware demodulation system based on an FPGA and an ARM. The method comprises the following steps: 1, building a structure health monitoring hardware system for an FBG sensor; 2, designing a power module of the hardware system; 3, designing a digital simulation conversion module; 4, designing a photoelectric conversion module; 5, designing an analog-digital collection module; 6, designing a data processing module. The method combines the FPGA and the ARM to complete the data preprocessing, the generation of an F-P cavity drive signal and the wavelength algorithm implementation. Through the above steps, the method achieves the FBG sensor hardware demodulation system based on the FPGA and the ARM, and can achieve the demodulation of a wavelength signal of an FBG. In addition, the hardware system enables all function modules to be packaged into modules, thereby simplifying the design of the system. The modules can be debugged and operate independently, thereby facilitating the reduction of complexity of the system, and enabling the system upgrading, debugging and maintenance to be simplified.

Description

technical field [0001] The present invention provides an implementation method of a fiber grating sensor hardware demodulation system based on a Field-Programmable Gate Array (i.e. Field-Programmable Gate Array, hereinafter referred to as FPGA) and a microprocessor ARM (i.e. Acorn RISC Machine, hereinafter referred to as ARM). The invention includes a power supply module, a digital-to-analog conversion module, a photoelectric conversion module, an analog-to-digital acquisition module, and a data processing module, capable of demodulating fiber grating wavelength data, and belongs to the technical field of structural health monitoring. Background technique [0002] Due to the advantages of anti-electromagnetic interference, anti-corrosion, high sensitivity, intrinsically passive, and easy maintenance, fiber grating sensors have been used in various large-scale electromechanical, petrochemical, strong electromagnetic interference, and flammable industries with the development o...

AI Technical Summary

Problems solved by technology

[0003] In the existing FBG sensor hardware demodulation system, the processing system often uses a single processor, resulting in poor parallel processing capability and real-time performance of the FBG sensor demodulation system, and complicated communication with off-chip expansion memory and peripheral devices. , the integrated system is not convenient for system upgrade, debugging and maintenance

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