CAJ | 학술논문

为实现对风场的实时监控,多波束风场位移测量系统对数据采集系统提出了很高的要求.针对实际需求,设计了实现高速数据缓存和传输控制的FPGA芯片,主要包括PLL时钟管理模块、前级FIFO缓冲模块、后级双口RAM存储模块以及FIFO和RAM的读写控制模块等,很好地完成了数据的缓存和异步读取,并且极大简化了A/D芯片接口电路结构和印制电路板设计的复杂性.在开发环境Quartus Ⅱ 6.1中对设计的各个模块分别进行了综合和仿真,仿真结果表明各模块均达到了设计要求.风场位移测量系统成功地对实地风场进行了测量,结果表明高速数据采集系统能够有效地检测出风场中不同距离处的散射回波信号,并据此计算出风速以及风向.
위실현대풍장적실시감공,다파속풍장위이측량계통대수거채집계통제출료흔고적요구.침대실제수구,설계료실현고속수거완존화전수공제적FPGA심편,주요포괄PLL시종관리모괴、전급FIFO완충모괴、후급쌍구RAM존저모괴이급FIFO화RAM적독사공제모괴등,흔호지완성료수거적완존화이보독취,병차겁대간화료A/D심편접구전로결구화인제전로판설계적복잡성.재개발배경Quartus Ⅱ 6.1중대설계적각개모괴분별진행료종합화방진,방진결과표명각모괴균체도료설계요구.풍장위이측량계통성공지대실지풍장진행료측량,결과표명고속수거채집계통능구유효지검측출풍장중불동거리처적산사회파신호,병거차계산출풍속이급풍향.
The high demand of data acquisition system was proposed to realize the real-time monitoring of wind fields in the multi-beam displacement measurement of wind field system.In this paper,the FPGA chips was well designed to achieve cache and transmission control of high-speed data to meet the actual demand,including PLL clock management module,the preceding stage of FIFO buffer module,the rear stage of dual-port RAM memory modules and the reading and writing control module of FIFO and RAM.It not only fulfilled caching and asynchronous data reading,but also greatly simplified the interface circuit structures of A/D chip and the design of printed circuit board.Synthesis and simulation of all modules was carried out using the program Quartus Ⅱ 6.1.The result presented perfect satisfaction to the design requirements.The wind field was successfully measured by the displacement measuring system,which presented the high-speed data acquisition and processing system could effectively detect the echo signal in different distance.Therefore,we can calculate the wind speed and get the wind direction according to the detected signals.