Distributed Optical Fiber Temperature Measurement System Based On ARM

Distributed optical fiber temperature measurement system is to achieve real-time all-round temperature target detection system. System, high precision, but also long-distance multi-point monitoring is widely used in industry and agriculture, electric power, aerospace and other fields. Traditional distributed fiber optic temperature measurement system due to the larger main system, coupled with fiber-optic long-distance temperature measurement, the lack of portability; addition, the system uses high-speed acquisition card is very expensive, this also limits the system to promote the use of. With the rapid development of embedded processors for embedded processors, provide new opportunities for the introduction of distributed optical fiber temperature sensing system. In this paper, high-performance embedded chip applications to distributed fiber optic temperature measurement system, the proposed distributed fiber optic temperature measurement system based on ARM not only improves the system's mobility, but also reduces the system cost, the new system greater application prospects.Firstly, in Research on distributed optical fiber temperature measurement system and the distributed optical fiber temperature measurement system in the universal application of the three different theories of mediation analysis, Raman scattering-based regulation system designprogram, and based on the basic theory of Raman scattering are discussed in detail, the main analysis parameters and basic characteristics of the temperature measurement system. Secondly, the introduction of the distributed optical fiber temperature measurement system based on ARM hardware, software design, including:hardware framework diagram, hardware selection and chip, the transplant and build of embedded systems. Finally, the experimental use of the system, obtained the curve of real-time temperature data of the measured object, and the measurement accuracy of a scientific analysis.The system and the need to improve in the future and direction at the end of Paper.In this paper, the introduction of embedded technology to the field of optical fiber sensing, bonding fiber optical time domain reflectometry technology, micro-processing chip, the FPGA, DSP, the ARM hardware platform, described in detail fiber optical time domain reflectometry, Raman scattering, Rayleighthe scattered light demodulation anti-Stokes Raman scattering of light and demodulation, embedded controller applications in a distributed fiber optic temperature measurement system provides a new development approach for distributed fiber optic temperature measurement system,has a certain theoretical significance and application value.Figure35table6reference45...