基于CompactRIO的BiSS-C协议绝对式圆光栅接口通讯设计  

Design of BiSS-C Protocol Absolute Radial Grating Communication Based on CompactRIO

作　　者：蔡吴磊 梁显荣 赵云峰 晋刚[1] CAI Wu-lei;LIANG Xian-rong;ZHAO Yun-feng;JIN Gang(National Engineering Research Center of Novel Equipment for Polymer Processing,Key Laboratory of Polymer Processing Engineering,Ministry of Education,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]聚合物新型成型装备国家工程研究中心,聚合物成型加工工程教育部重点实验室,华南理工大学,广东广州510640

出　　处：《仪表技术与传感器》2021年第12期66-70,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(11572129);国家重点研发计划项目(2019YFB1704902)。

摘　　要：为了满足旋转流变仪测控系统的精度要求,选用绝对式圆光栅作为位置传感器并通过BiSSC协议实现数据读取,但BiSS Master官方解码芯片灵活性及拓展性较差,因此设计了基于CompactRIO的BiSS-C协议通讯解码方案。针对该协议的通信传输方式及光栅解码要求,采用状态机设计了通讯解码模块,并利用示波器完成了时序验证。最后,完成了与BiSS Master解码芯片的对比分析。结果表明,基于CompactRIO的BiSS-C协议通讯设计具备良好的拓展性,其准确性及可靠性完全满足测控系统要求。In order to meet the requirement of the rotational rheometer measurement and control system,this article used the absolute radial grating as the sensor,which can realize the data reading through BiSS-C protocol.Due to the disadvantages of flex⁃ibility and expansibility in BiSS Master official decoding chip,a BiSS-C protocol decoding method was proposed based on Com⁃pactRIO.According to the communication transmission mode and grating decoding requirements of the protocol,a communication and decoding module was designed through the state machine,and its time sequence was verified by oscilloscope.Lastly,a com⁃parison between our method and the BiSS Master decoding chip was carried out.Experimental results indicate that the communica⁃tion design of BISS-C protocol based on CompactRIO has good extensibility,its accuracy and reliability can satisfy the require⁃ments of the measurement and control system.

关 键 词：COMPACTRIO BiSS-C 绝对式圆光栅 通讯解码 旋转流变仪 位置采集 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]