基于Hash散列的SCPI命令解析机制在LXI仪器上的实现  

Implementation of SCPI Parsing Mechanism Based on Hash in LXI instrument

作　　者：李智[1] 秦昌明[1] 张活[1] 

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004

出　　处：《化工自动化及仪表》2012年第12期1612-1616,共5页Control and Instruments in Chemical Industry

基　　金：广西研究生创新基金项目(2011105950804M32)

摘　　要：在ARM&Linux嵌入式平台下,完成LXI仪器程控命令的发送。通过单向散列函数MPQ和Fibonacci函数构建分配较为均匀的散列表;采用链式的开散列结构,多值校验的冲突解决机制有效减小了冲突发生的可能;给出了SCPI命令解析中关键字节点和参数解析的实现方法;最后给出了一个LXI数字化仪命令解析的例子。该命令解析机制有较小的时间复杂度、高效的解析效率和较好的通用性。On ARM & Linux embedded platform,sending remote control commands were implemented.MPQ and Fibonacci one-way hash functions were applied to construct hash tablet where elements are distributed uniformly.Open hashing structure based on linked list and multi-value calibration collision resolution policy can efficiently reduce collision possibility.The keyword nodes and parameters parsing methods were presented,including an example of LXI digitizer command parsing.This command parsing mechanism has small time complexity,high parsing efficiency and good versatility.

关 键 词：命令解析 SCPI LXI 散列 

分 类 号：TH865[机械工程—仪器科学与技术]