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首页> 外文期刊>Optics and Lasers in Engineering >FPGA-based interrogation controller with optimized pipeline architecture for very large-scale fiber-optic interferometric sensor arrays
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FPGA-based interrogation controller with optimized pipeline architecture for very large-scale fiber-optic interferometric sensor arrays

机译：基于FPGA的询问控制器，具有优化的流水线架构，适用于超大规模光纤干涉传感器阵列

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摘要

Fiber-optic sensor arrays are always organized utilizing hybrid time division multiplexing (TDM)/wavelength division multiplexing (WDM) techniques to share some common optical components and reduce the cost. Modern sensor arrays can support up to several thousands of sensors by employing distributed amplification technique. They generate huge amount of data and pose other big challenge on the interrogation controller of the sensor system, such as long demodulation time and heavy computational burden. Aiming to solve these problems, we present a complete design of the interrogation controller based on a field programmable gate array (FPGA) by lending its powerful parallelism potential. The interrogation controller adopts a hardware-implementation-friendly modulation method called the rectangular-pulse binary (RPB) modulation. The functional modules in the FPGA are properly organized according to the working principle of the RPB method and carefully designed by optimizing their pipeline architecture to minimize the output latency, which is essential to increase the maximal supportable number of sensors. By analyzing the resource budget and the actual resource consumption result, it demonstrates that the controller can support up to 1000+ sensors in real time by using a single middle-end Stratix III FPGA chip. A 8-sensors array prototype is constructed to validate its functionality. This work can greatly reduce the cost of the sensor system and push it closer to the practical applications.
机译：光纤传感器阵列始终利用混合时分多路复用（TDM）/波分多路复用（WDM）技术进行组织，以共享一些常见的光学组件并降低成本。通过采用分布式放大技术，现代传感器阵列可以支持多达数千个传感器。它们会产生大量数据，并给传感器系统的询问控制器带来其他挑战，例如较长的解调时间和沉重的计算负担。为了解决这些问题，我们通过利用其强大的并行潜力，提出了一种基于现场可编程门阵列（FPGA）的询问控制器的完整设计。询问控制器采用一种硬件实现友好的调制方法，称为矩形脉冲二进制（RPB）调制。 FPGA中的功能模块根据RPB方法的工作原理进行了适当的组织，并通过优化其流水线架构来精心设计以最小化输出延迟，这对于增加传感器的最大支持数量至关重要。通过分析资源预算和实际资源消耗结果，可以证明该控制器通过使用单个中端Stratix III FPGA芯片可以实时支持多达1000+个传感器。构建了一个8传感器阵列原型来验证其功能。这项工作可以大大降低传感器系统的成本，并使之更接近实际应用。

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  • 来源
    《Optics and Lasers in Engineering》 |2019年第10期|389-396|共8页
  • 作者

    Cui Ke; Peng Wenjun; Ren Zhongjie; Qian Jieyu; Zhu Rihong;

  • 作者单位

    Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing, Jiangsu, Peoples R China|Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing, Jiangsu, Peoples R China;

    Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing, Jiangsu, Peoples R China|Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing, Jiangsu, Peoples R China;

    Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing, Jiangsu, Peoples R China|Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing, Jiangsu, Peoples R China;

    Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing, Jiangsu, Peoples R China|Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing, Jiangsu, Peoples R China;

    Nanjing Univ Sci & Technol, MIIT Key Lab Adv Solid Laser, Nanjing, Jiangsu, Peoples R China|Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Interferometric sensor; Multiplexing; Time division multiplexing (TDM); Interrogation controller; Field programmable gate array (FPGA);

    机译：干涉传感器;多路复用;时分多路复用（TDM）;询问控制器;现场可编程门阵列（FPGA）;

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