优先权排队在消防物联网中的应用

针对消防物联网系统中消防监控中心收到的火警信息存在延迟,可能导致救火作战时机延误的问题,提出了一种火警信息优先传输的解决方案。首先,推导出FCFS的M/M/1排队系统的运行指标；其次,将消防报警信息分为火警报警信息、火警消除信息、故障报警信息和故障消除信息等四个优先级,建立非抢占优先权排队系统,并推导出各个优先级的运行指标；最后,从平均逗留时间和平均队长两个维度,比较了非抢占优先权排队系统和M/M/1系统的性能。提出的火警信息优先传输方案,满足了火警信息时延小的要求,同时实现复杂度低,为消防物联网安全信息数据的获取提供一定的理论支撑。

Application of priority queuing in FS IOT

In view of the delay of the fire information received by the fire monitoring center in the FS IOT, the issue of the time delay of firefighting may be caused, and a solution of the priority transmission of the fire information is put forward. Firstly, the operation indices of M/M/1 queuing system based on FCFS is deduced. Secondly, the fire alarm information is divided into four priorities: fire alarm information, fire eliminate information, fault alarm information and fault eliminate information. The paper establishes the non-preemptive priority queuing system, and derives the operation indices of each priority. Finally, the performance of non-preemptive priority queueing system and M/M/1 system is compares from two dimensions of average length of stay and average queue length. The priority system not only meets the requirement of small time delay, but also has low complexity, which provides a theoretical support for the acquisition of the fire safety information data.