摘要
为保证调制解调器(Modem)长时间稳定运行,提出一种调制解调器短消息服务控制策略。设计基于串口DTR/RTS引脚的Modem断电重启电路,利用先入先出队列对Modem进行有序控制,通过期望应答值和超时策略实现对Modem异常状态的侦测。当Modem出现异常时,能将其断电重启,从而恢复功能。应用结果证明了该策略的有效性。
Considering actual applications of a Short Message Service(SMS) service,a specific circuit based on DTR/RTS is developed to reset Modem.To build a sequence of AT commands,A First-in First-out(FIFO) table where expectable response string from Modem and the maximum timeout are stored independently is built.The key procedures are presented,through which Modem can be re-powered on simultaneously after its errors are detected by the SMS service.
出处
《计算机工程》
CAS
CSCD
北大核心
2011年第21期217-219,共3页
Computer Engineering
基金
福建省科技厅基金资助重大项目(2011H6009)
福建省自然科学基金资助项目(2010J01326)
福建省高校新世纪优秀人才支持计划基金资助项目(JA11037)
福建省教育厅基金资助项目(JA10078
JB09074)