控制信号传输的高可靠性设计  

High Reliability Design of Control Signal Transmission

作　　者：任勇峰[1] 张焱[1] 齐蕾[1] 姚宗[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051

出　　处：《计算机测量与控制》2014年第12期4069-4071,共3页Computer Measurement &Control

摘　　要：在我们平常使用或设计的电子电路中,或多或少都会受到电磁干扰的影响;其中一小部分电磁干扰是以射频辐射的方式被直接接受的,大部分电磁干扰则通过瞬时传导被接受;在数字电路中,复位、中断和控制信号最容易受到电磁干扰的影响;我们在对研制的设备进行电磁干扰实验中,控制信号受其影响,导致指令下发错误,影响了设备正常工作;为了解决该问题,我们首先从硬件电路设计进行分析,找到了问题所在及改进方法;同时,在无法改变PCB板的前提下,将控制信号进行封锁,改进控制信号消抖逻辑设计,从而从硬件电路设计及逻辑设计上,保证了控制信号的高可靠性传输。In the electronic circuit we normally used or designed,they are more or less affected by EMI.A small part of EMI is directly received by the radio frequency radiation mode,most of EMI is received by transient conduction.In the digital circuit,reset,interrupt and control signals are most vulnerable to EMI.While we did EMI experiment in the developed equipment,the control signal was affected,causing instruction sends error and affecting the normal operation of the equipment.In order to solve this problem,we first analyze the hardware circuit design,find the problem and improvement method; at the same time,on the premise of not changing the PCB board,we block the control signals and improve the eliminating tremble logic design about the control signal.Finally,the high reliability transmission of control signal are ensured by the hardware connection and logic design.

关 键 词：电子 电磁干扰 控制信号 逻辑设计 高可靠性传输 

分 类 号：TN911.72[电子电信—通信与信息系统]