Modulation and demodulation method of distributed optical fiber sensor based on multi-domain hybrid multiplexing
A distributed optical fiber, modulation and demodulation technology, applied in the direction of using optical devices to transmit sensing components, etc., can solve the problem that the spectrum analyzer cannot provide an external control interface, time-division signal demodulation cannot achieve real-time performance, and TDM time-division multiplexing cannot be performed and other issues, to achieve strong scalability, facilitate large-scale application promotion, improve accuracy or light source bandwidth
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[0032] Aiming at the capacity limitation of the existing two-dimensional multiplexing technology, the present invention proposes three-dimensional multiplexing in time domain, wave domain and frequency domain, and aims at the conflict between real-time demodulation in time domain and long demodulation cycle in wave domain and frequency domain, and designs a Multi-domain optical fiber sensing and its demodulation system software and hardware, optical fiber sensing unit and algorithm can greatly improve the multiplexing capacity and realize single-fiber large-scale sensing multiplexing.
[0033] A multi-domain hybrid multiplexing distributed optical fiber sensing and demodulation device, which consists of a system on chip (SOC), a light source module, an optical fiber sensing unit, a filter control module, a data acquisition module, a data storage module and a data transmission module constitute.
[0034] Described system on chip SOC is the chip that ARM processor and FPGA (Fiel...
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