To achieve real-time, high-speed acquisition and transmission of dynamic strain variables detected by Fiber Bragg Grating (FBG) sensors, a high-speed data acquisition system based on a DSP and FPGA architecture was designed. This system utilizes a Field-Programmable Gate Array (FPGA) as an auxiliary processor to perform high-speed data acquisition, store configuration programs, and power the development board. A Digital Signal Processor (DSP) is used as the main processor to achieve functions such as data processing and storage. High-speed transmission between the DSP and PC is then achieved via a control chip, displaying the final measured strain variables on the PC for easy analysis of the results. The overall functions, hardware circuit, and software design of the system are described. Experimental simulation analysis proves that this system can meet high-speed acquisition requirements and possesses good stability and real-time performance.

To measure internal strain in large structural materials, or strain in high-power devices in environments with strong electromagnetic interference, such as electromagnetic railguns, dynamic strain measurement devices based on Fiber Bragg Grating (FBG) sensors offer significant advantages. When sensors are placed inside high-power devices or electromagnetic railgun tracks, the testing system is required to have strong anti-electromagnetic interference capabilities, fast response, small size, and good real-time performance. Therefore, a high-speed data acquisition system is a critical component for high-dynamic-response FBG strain