一种抗辐照试验测试系统中RS485总线IO卡设计  

Design of a RS485 bus IO card applied in measurement system of anti-radiation experiment

作　　者：李超[1] 庄伟[1] 颜敏[1] LI Chao;ZHUANG Wei;YAN Min(Sichuan Institute of Solid-State Circuits,CETC,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第24研究所,重庆400060

出　　处：《太赫兹科学与电子信息学报》2017年第2期333-337,共5页Journal of Terahertz Science and Electronic Information Technology

摘　　要：介绍了基于RS485总线的远程IO卡在抗辐照测试系统中的实现(主要用于瞬时剂量率抗辐照试验、总剂量抗辐照试验等),包括USB转RS485接口模块、RS485转IO卡控制模块。采用FT232与隔离型RS485驱动器实现USB转RS485;使用32位控制器STM32与RS485隔离型驱动作为远程端IO输出设备。研制的RS485总线IO卡作为抗辐照测试系统的重要组成部分,完成了瞬态剂量率、总剂量试验和中子试验,并得到了测试数据。通过实际抗辐照试验环境验证,该模块具有现场布线要求低,可靠性高的特点,满足应用需求。A remote IO card based on RS485bus is designed for the measurement system used in anti-radiation experiment(transient dose rate,the total dose rate etc.),which consists of USB to RS485interface module and RS485to IO control module.The FT232and isolating type RS485driver are utilized for conversion from USB to RS485;the32bit MCU STM32and isolating type driver are adopted to controlremote IO.As an important part of the whole measurement system for anti-radiation experiment,the IOcard is adopted to finish the transient dose rate experiments,the total dose rate and the neutron experiment,and the data is obtained.According to a series of experiments,the IO card is proved to be of low requirements of field wiring,high reliability and satisfying the actual application.

关 键 词：RS485总线 抗辐照测试 单片机 IO卡 

分 类 号：TN606[电子电信—电路与系统] TP336[自动化与计算机技术—计算机系统结构]