光电子技术
光電子技術
광전자기술
OPTOELECTRONIC TECHNOLOGY
2009年
4期
236-239
,共4页
光栅%光栅解调%现场可编程门阵列%Nios
光柵%光柵解調%現場可編程門陣列%Nios
광책%광책해조%현장가편정문진렬%Nios
grating%grating demodulation%FPGA%Nios
光栅传感器被广泛应用于位移、温度、应力等应变量的测量,光栅解调器测量光栅反射信号的波长位移量的精度决定了光栅传感器测量的准确度.采用嵌入式技术,使用ALTERA公司的高速FPGA器件和Nios-II软核设计了高速高精光栅解调器,其测量精度达到1pm,扫描频率大于2 000Hz.
光柵傳感器被廣汎應用于位移、溫度、應力等應變量的測量,光柵解調器測量光柵反射信號的波長位移量的精度決定瞭光柵傳感器測量的準確度.採用嵌入式技術,使用ALTERA公司的高速FPGA器件和Nios-II軟覈設計瞭高速高精光柵解調器,其測量精度達到1pm,掃描頻率大于2 000Hz.
광책전감기피엄범응용우위이、온도、응력등응변량적측량,광책해조기측량광책반사신호적파장위이량적정도결정료광책전감기측량적준학도.채용감입식기술,사용ALTERA공사적고속FPGA기건화Nios-II연핵설계료고속고정광책해조기,기측량정도체도1pm,소묘빈솔대우2 000Hz.
Grating sensors are widespread applied to measure the dependent variable, such as offset, temperature, stress etc. The precision of wavelength displacement of reflected signal measured by grating demodulator can decide the measuring accuracy of grating sensors. The high speed and high precision grating demodulator based on embedded technology is provided, which using FPGA from ALTERA corporate and Nios-II soft kernel. The measuring precision can reach 1 picometer, and swept frequency is higher than 2 000 Hz.
