CAJ | 학술논문

以光纤传感系统空间定位问题的研究为背景,探讨了互相关算法在大规模现场可编程门阵列(FPGA)的实现方案,设计出流水线操作的互相关运算器,并应用VHDL语言实现了互相关运算器.该互相关运算器在64 MHz的时钟下,能够对二路监测信号进行互相关处理,实时完成128点探测距离的互相关运算,为光纤传感系统的后续空间准确定位奠定了基础.利用大规模的FPGA硬件资源丰富特点,用硬件电路实现互相关运算,有效提高了数据处理速度,实现了数据检测的实时性,有效解决光纤干涉仪传感系统中空间信息稳定实时提取的难题.
이광섬전감계통공간정위문제적연구위배경,탐토료호상관산법재대규모현장가편정문진렬(FPGA)적실현방안,설계출류수선조작적호상관운산기,병응용VHDL어언실현료호상관운산기.해호상관운산기재64 MHz적시종하,능구대이로감측신호진행호상관처리,실시완성128점탐측거리적호상관운산,위광섬전감계통적후속공간준학정위전정료기출.이용대규모적FPGA경건자원봉부특점,용경건전로실현호상관운산,유효제고료수거처리속도,실현료수거검측적실시성,유효해결광섬간섭의전감계통중공간신식은정실시제취적난제.
Based on large-scale field programmable gate array (FPGA), an implementation scheme of cross-correlation algorithm is studied for recognizing the position of the event in fiber-optic sensor system. A pipelining cross-correlation circuit is designed in VHDL language. The cross-correlation circuit can make the cross-correlation processing on two way monitoring signals, complete cross-correlation calculation of 128 detecting points in real time at 64 MHz clock. And it lays the foundation of accurate follow-up spatial positioning for optical fiber sensing system. With the resource-rich characteristics of large-scale FPGA hardware, the implementation of cross-correlation calculation in the hardware circuit effectively enhances data processing speed and implements data detection in real-time. And it effectively solves the difficult problem of stably extracting real-time position information in the fiber-optic interferometer sensing system.