基于STM32的波谱仪接收通道的设计  

Design of NMR receive channel based on STM32

作　　者：彭求实[1] 郑振耀[1] 陈忠[1] 姚凯文[1] 胡浩[1] 

机构地区：[1]厦门大学电子科学系福建省等离子体与磁共振研究重点实验室,厦门361005

出　　处：《电子测量技术》2014年第7期76-79,共4页Electronic Measurement Technology

摘　　要：针对核磁共振波谱仪中接收通道的功能需要,提出了一种基于STM32作为协处理器,通过移植LwIP协议栈,实现数据流直接多通道网络传输的设计方案。该方案和以往方案相比,大大减轻了主处理器FPGA的工作负担,并且具有实时性高、模块化、易于拓展等特点。主要介绍了该方案的主要设计思路以及软硬件基本架构,重点阐述了其中的关键技术,实物完成后通过netio以及系统联机测试的结果表明本方案满足波谱仪接收通道的实际性能需要,同时使得系统的可维护性得到了提高。To satisfy the require of the receiver channel,this paper puts forward a designing program which uses STM32 as a co-processor and LwIP as a protocol stack to achieve multichannel data transmission.Compared to the previous programs,this program greatly reduces the workload of the host processor FPGA,It is high real-time,modular and easy to expand.The paper will introduce the software and hardware platform of this program and the key of techniques.The result based on netio and on-line testing proves that this program meets the requirement of receiver channel and improves the manufacturing and maintainability of the system.

关 键 词：核磁共振 STM32 LWIP 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]