基于FPGA的多路光电编码器数据采集系统  

Data acquisition system for multiple encorders based on FPGA

作　　者：叶东[1] 周志炜[1] 张飚[2] 彭国茂[1] 

机构地区：[1]哈尔滨工业大学自动化测试与控制系,黑龙江哈尔滨150001 [2]哈尔滨师范大学物理系,黑龙江哈尔滨150080

出　　处：《传感器与微系统》2006年第5期45-47,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(50205007)

摘　　要：介绍了一种基于现场可编程门阵列(FPGA)的多路光电编码器数据采集系统,包括其功能、原理、软件编程和硬件实现电路。描述了该电路的4个主要功能:四倍频细分、辨向、计数及串行通讯。根据波形的跳沿实现四倍频细分;通过对波形相位的分析,采用基于相位变化的设计原理实现辨向。整个系统在QuartusⅡ软件环境下实现编程,应用A ltera公司的EPF10K20TC144-3型芯片作为硬件载体,角度分辨力可达1″。最后,给出了详细的编程和仿真波形。A kind of data collection system of multiple encoders is introduced based on FPGA, including function, principle, programme and circuit. The four primary functions are introduced, such as four fold-frequency subdivision,direction-judgment,counter and serial communication. The four fold-frequency subdivision is realized on the basis of scarp of wave shape, and the direction-judgment is realized on the basis of phase change after analyzing wave shape. The programme is in Quartus Ⅱ,and the design is based on EPF10K20TC144-3 of Ahera, and the resolution is 1＂. The programme is described in details with simulation wavefotm.

关 键 词：光电编码器 四倍频细分 辨向 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]