基于GSM水位无线数据采集系统的可靠性研究

发布时间：2018-05-08 16:33

本文选题：无线数据采集系统 + 可靠性　；参考：《武汉理工大学》2015年硕士论文

【摘要】：无线数据采集系统能实现水位的实时监测,使工作人员及时掌握井下水害的动态变化规律,做出及时预测及处理。因此,对无线数据采集系统的可靠性进行准确地分析、研究其失效机理并提出相应的措施对于提高无线数据采集可靠性、保证煤矿业安全有着十分重要的意义。首先,本文将详细全面地研究无线数据采集系统的结构和系统各个组成部件的生产工艺过程。确定无线数据采集系统的可靠性指标。为后面对系统进行可靠性分析提供依据。其次,本文在无线数据采集系统可靠性分析中,根据系统结构和工艺流程研究系统各个组件的故障模式,确定故障发生的原因,然后通过故障树分析法对无线数据采集系统进行定性和定量的可靠性分析。制作出整个无线数据采集系统的故障树,根据故障树分析系统的最小割集,获得故障树底事件的失效率,计算系统的顶事件概率为0.582×10-3总系统的失效率高。然后,将部件之间的连接关系用图形化方式来表示,建立每个部件的可靠框图,在根据部件的可靠性框图建立总的系统的可靠性框图。再根据每个部件的可靠性框图建立可靠度模型,建立总系统的可靠性模型。最后,对可靠性模型进行求解。分析可靠性模型,可靠性模型主要有系统总可靠度和成本两个约束条件,根据这这两个约束条件,得到最优的各个部件的失效率,从而获得最大的可靠度,其实质上是可靠性分配问题,详细的分析系统可靠性分配问题找到最合适的分配方法对系统可靠性模型进行求解。运用matlab编程求解可靠性模型,获得最优的故障率分配使得在满足约束条件下获得最小的成本和最大的可靠度。
[Abstract]:The wireless data acquisition system can realize the real-time monitoring of water level, make the staff grasp the dynamic change rule of underground water disaster in time, and make timely prediction and treatment. Therefore, it is very important to analyze the reliability of wireless data acquisition system, study its failure mechanism and put forward corresponding measures to improve the reliability of wireless data acquisition and ensure the safety of coal mining industry. Firstly, the structure of wireless data acquisition system and the production process of each component of the system will be studied in detail. The reliability index of wireless data acquisition system is determined. It provides the basis for reliability analysis of the system. Secondly, in the reliability analysis of wireless data acquisition system, according to the system structure and process flow, the failure mode of each component of the system is studied to determine the cause of the failure. Then the reliability of wireless data acquisition system is analyzed qualitatively and quantitatively by fault tree analysis. The fault tree of the whole wireless data acquisition system is made. According to the minimum cut set of the fault tree analysis system, the failure rate of the bottom event of the fault tree is obtained. The probability of calculating the top event of the system is 0.582 脳 10 ~ (-3) and the failure rate of the system is high. Then, the connection relationship between components is graphically represented, and the reliability block diagram of each component is established, and the reliability block diagram of the total system is established according to the reliability block diagram of the component. Then according to the reliability block diagram of each component, the reliability model is established, and the reliability model of the total system is established. Finally, the reliability model is solved. The reliability model consists of two constraints: total reliability of the system and cost. According to these two constraints, the failure rate of the optimal components is obtained and the maximum reliability is obtained. It is essentially a reliability assignment problem. The system reliability model is solved by analyzing the system reliability assignment problem in detail and finding the most suitable allocation method. Using matlab programming to solve the reliability model, the optimal failure rate allocation is obtained so that the minimum cost and maximum reliability can be obtained under the constraint conditions.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD745

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