摘要
文中针对板间SPI通信在电快速瞬变脉冲群干扰试验中易受影响,导致数据传输异常问题,分析了串行通信传输的不确定性以及干扰等原因,提出了在硬件方面增加电源回路共模干扰抑制、SPI通信线路上添加低通滤波器,在软件方面锁定配置寄存器、运用CRC-16 CCITT算法实现CRC校验的抗干扰设计,试验结果表明,配置寄存器锁定及CRC校验可有效解决SPI通信数据传输误码问题。
The paper focus on the research and analyze of the uncertainty of serial communication transmission and the interference according to the problem of the inter-board SPI communication is susceptible to the electric fast transient burst interference test,which leads to the abnormal data transmission,the noise immunity design of increasing the common-mode interference suppression of power supply loop and adding low-pass filter on SPI communication line in hardware, locking configuration registers and the application of CRC-16 CCITT algorithm in software are put forward. The test results show that locking configuring register and CRC algorithm can effectively solve the SER problem of data transmission of SPI communication.
作者
李望
魏勇
赵贺
王全海
史宏光
王淇森
LI Wang;WEI Yong;ZHAO He;WANG Quan-hai;SHI Hong-guang;WANG Qi-sen(XJ Electric Co.,Ltd,Xuchang 461000,China;State Grid Beijing Electric Power Research Institute,Beijing 100000,China)
出处
《电子设计工程》
2019年第17期183-188,共6页
Electronic Design Engineering
基金
国家重点研发计划(2016YFB0900503)
关键词
电快速瞬变脉冲群干扰
SPI通信
CRC算法
抗干扰设计
electrical fast transient burst interference
SPI communication
CRC algorithm
noise immunity design
