基于FPGA的绝对式光栅尺接口通讯设计与实现  

Design and Implementation of Absolute Grating Interface Communication Based on FPGA

作　　者：张芳健 王晗[1] 蔡念[1] 廖剑祥 胡峰[1] 曾耀斌 李志劲[2] 何国锐 

机构地区：[1]广东工业大学,广东广州510006 [2]佛山市质量计量监督检测中心,广东佛山528000

出　　处：《仪表技术与传感器》2018年第1期36-40,共5页Instrument Technique and Sensor

基　　金：广东省前沿与关键技术创新专项资金项目(2015B010124001);东莞市产学研项目(2013509109101);广东省科技计划项目(协同创新与平台环境建设)(2015B010102014);"广东特支计划"科技青年技尖人才项目(2014TQ01X212);广东省高等学校优秀青年教师培养计划项目(YQ2015056);广东省自然科学基金项目(2015A030312008);广东省公益研究项目(2015B010104006)

摘　　要：为满足绝对式光栅尺接口通讯高速、大数据量、高稳定性等的要求,完成了Bi SS协议光栅尺接口模块的设计与实现。该接口基于FPGA设计,利用FPGA模块化设计的优势,建立数据读取模块对Bi SS协议的数据格式进行时序上的解码,得到传递的数据信息。另外加入延时补偿、CRC校验等模块,前者对数据传递进行时间补偿,可保证高速长距离传输,后者保证了数据的稳定准确传输。仿真与测试表明,该接口模块具有高速传输、数据量大等特点,适合绝对式光栅尺的数据传输。In order to meet the requirements of high speed,large data volume and high stability of the absolute grating interface,this paper designed an absolute grating interface module of Bi SS protocol grating.This interface design was based on FPGA,using the advantage of FPGA on modular design,a data reading module to decode the timing information of Bi SS protocol was built,the transitive data was gotten.In addition,delay compensation,CRC and other modules were added.Delay compensation module can compensate the delay of data transmission,which can guarantee high-speed long-distance transmission.CRC module guarantees the stability of the data transmission.Simulation and test results show that this interface module has the characteristics of high speed transmission and large data volume.It is suitable for data transmission of absolute grating.

关 键 词：绝对式 光栅尺 FPGA 通讯协议 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]