电子技术
電子技術
전자기술
ELECTRONIC TECHNOLOGY
2014年
5期
48-52
,共5页
应急照明监控%优先级调度策略%排序算法%Qt/Embedded%Sqlite
應急照明鑑控%優先級調度策略%排序算法%Qt/Embedded%Sqlite
응급조명감공%우선급조도책략%배서산법%Qt/Embedded%Sqlite
emergency lighting monitoring%priority scheduling policy%sorting algorithm%Qt/Embedded%Sqlite
针对目前大规模应急照明监控系统485通信调度过程中存在的耗时长、效率低问题，对此提出基于优先级的通信调度策略。该策略通过设置不同优先级，引入排序算法来提高系统485的通信效率。排序算法可根据不同的波特率和数据位数对消息排序以减少系统通信配置次数进而缩短通信时间。基于提出的优先级调度策略使用Qt/Embedded和Sqlite数据库等工具开发了一套触摸屏应急照明监控系统。该系统能够正常运行并提高了应急照明监控系统通信速度。经过仿真验证，基于优先级排序算法调度策略提高通信速度是可行的。实际应用中，阜阳应急照明监控系统的正常运行也证实了此方法可行有效。
針對目前大規模應急照明鑑控繫統485通信調度過程中存在的耗時長、效率低問題，對此提齣基于優先級的通信調度策略。該策略通過設置不同優先級，引入排序算法來提高繫統485的通信效率。排序算法可根據不同的波特率和數據位數對消息排序以減少繫統通信配置次數進而縮短通信時間。基于提齣的優先級調度策略使用Qt/Embedded和Sqlite數據庫等工具開髮瞭一套觸摸屏應急照明鑑控繫統。該繫統能夠正常運行併提高瞭應急照明鑑控繫統通信速度。經過倣真驗證，基于優先級排序算法調度策略提高通信速度是可行的。實際應用中，阜暘應急照明鑑控繫統的正常運行也證實瞭此方法可行有效。
침대목전대규모응급조명감공계통485통신조도과정중존재적모시장、효솔저문제，대차제출기우우선급적통신조도책략。해책략통과설치불동우선급，인입배서산법래제고계통485적통신효솔。배서산법가근거불동적파특솔화수거위수대소식배서이감소계통통신배치차수진이축단통신시간。기우제출적우선급조도책략사용Qt/Embedded화Sqlite수거고등공구개발료일투촉모병응급조명감공계통。해계통능구정상운행병제고료응급조명감공계통통신속도。경과방진험증，기우우선급배서산법조도책략제고통신속도시가행적。실제응용중，부양응급조명감공계통적정상운행야증실료차방법가행유효。
In order to resolve problems existed in the 485 communication scheduling such as time-consuming and low efficiency in large-scale emergency lighting monitoring system, a priority-based scheduling strategy for communications is proposed. By setting different priority levels and introducing sorting algorithm to improve the efficiency of 485 communications system. The sorting algorithm can reduce the numbers of system communications configuration and shorten the communications time by ordering the messages with different baud rates and data bits. Based on the proposed priority scheduling policy and using the tools of Qt/Embedded and Sqlite database, a set of touch-screen emergency lighting monitoring system is developed, which can operate normally and improve the communications speed of the monitoring system. Simulation proves that the improvement of the communications speed based on the scheduling strategy of priority-based sorting algorithm is feasible. And, in the practical application, the normal operation of Fuyang's emergency lighting monitoring system also confirmed that this method is feasible and effective.
