大体积混凝土超大规模无线温度监测系统研究

发布时间：2018-07-05 18:51

本文选题：大体积混凝土 + 无线传感器　；参考：《大连理工大学》2015年硕士论文

【摘要】：随着大跨桥梁、高层建筑、核电站以及水库大坝等城市基础设施建设的高潮蓬勃迭起,作为城市基础设施重要结构构件的大体积混凝土层出不穷。最大限度地减小桥梁大体积混凝土温度裂缝是保证城市基础设施整体安全性的重要环节。随着人们对大体积混凝土认识的不断深入,越来越多的专家学者认为在大体积混凝土施工过程中引入一定的温控监测措施是必要的。但现有的温控监测手段存在布线困难、可靠性差、自动化程度低、无法有效进行长期监测等问题,不能满足桥梁大体积混凝土温控监测的需要。本文针对现今大体积混凝土温度监测手段的不足,结合最新的技术手段发展了一种一体化的监测系统,包含一种快速布设的无线传感节点；能够容纳上万个温度节点的大规模无线传感网络；能够实现混凝土温度信息的采集与存储、显示与预警、管理与分析的智能化监测软件；最后形成了集温度探头、传感器网络、监测软件为一体的大体积混凝土温控监测系统。从而更好的提升了大体积混凝土温控的信息化水平。本文的主要研究内容如下：(1)针对大体积混凝土监测温度传感器布线困难的弊端,设计并实现了大体积混凝土温度监测的硬件系统。硬件系统包含一种快速布设的无线传感节点；包含一种能够容纳上万个温度节点的大规模无线传感网络；包含一种易于制作的光纤光栅温度传感探头；包含一种能够实现现场与远程监控的网络架构。(2)针对大体积混凝土温控参量长期依赖于人工计算的弊端,设计并开发了配套的大体积混凝土温度监测软件系统。软件系统实现了大体积混凝土中心温度、表面温度、里表温差、冷却水管温度、环境温度的实时显示与历史温度查询等功能。以及在此基础上实现了自动计算降温速率、最高温升等关键温控指标的功能。软件支持对多个监测任务进行统一管理,同时实现了温度在测点图上的直接显示以及监测数据导出到Excel的功能。(3)将研制开发的大规模无线温度监测系统分别应用于实际工程项目中。包括大体积混凝土模型试验温度监测项目、某大桥承台锚碇大体积混凝土温控监两个项目。工程实践表明,该系统具有布设方便快捷、温度测点数量大、智能化程度高等优点,实现了对混凝土温度信息的自动采集与存储、显示与预警、管理与分析等应用需求,具有良好的工程应用前景。
[Abstract]:With the high tide of urban infrastructure construction, such as long-span bridges, high-rise buildings, nuclear power stations and reservoir dams, mass concrete, as an important structural component of urban infrastructure, is emerging one after another. Minimizing the temperature crack of mass concrete is an important step to ensure the overall safety of urban infrastructure. With the deepening of people's understanding of mass concrete, more and more experts and scholars think that it is necessary to introduce certain temperature control monitoring measures in the process of mass concrete construction. However, the existing temperature control monitoring methods have some problems, such as difficult wiring, poor reliability, low degree of automation, unable to effectively carry out long-term monitoring, and can not meet the needs of temperature control monitoring of bridge mass concrete. Aiming at the deficiency of the current mass concrete temperature monitoring method, this paper develops an integrated monitoring system combining with the latest technical means, which includes a kind of wireless sensor node which is arranged quickly. A large-scale wireless sensor network capable of accommodating tens of thousands of temperature nodes; intelligent monitoring software that can collect and store temperature information of concrete, display and early warning, manage and analyze; finally, it forms a temperature probe, a sensor network, The temperature control and monitoring system of mass concrete is integrated with monitoring software. Thus, the information level of mass concrete temperature control is improved better. The main contents of this paper are as follows: (1) the hardware system of mass concrete temperature monitoring is designed and implemented in view of the disadvantages of mass concrete monitoring temperature sensor routing. The hardware system includes a fast placement wireless sensor node, a large-scale wireless sensor network capable of accommodating tens of thousands of temperature nodes, a fiber Bragg grating temperature sensor probe which is easy to fabricate. It includes a network architecture which can realize field and remote monitoring. (2) aiming at the drawback that mass concrete temperature control parameters depend on manual calculation for a long time, a supporting mass concrete temperature monitoring software system is designed and developed. The software system realizes the functions of mass concrete center temperature, surface temperature, inner surface temperature difference, cooling water pipe temperature, environment temperature real-time display and historical temperature query. On this basis, the functions of automatic calculation of cooling rate, maximum temperature rise and other key temperature control indexes are realized. The software supports unified management of multiple monitoring tasks, At the same time, the direct display of temperature on the point map and the function of exporting the monitoring data to Excel are realized. (3) the developed large-scale wireless temperature monitoring system is applied to practical engineering projects. It includes two items: temperature monitoring project of mass concrete model test and temperature monitoring of mass concrete of a bridge abutment Anchorage. The engineering practice shows that the system has the advantages of convenient and quick layout, large number of temperature measuring points and high degree of intelligence. It realizes the application requirements of automatic collection and storage of concrete temperature information, display and warning, management and analysis, etc. It has a good prospect of engineering application.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U446

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