斜拉桥索力监测无线传感器研究与开发
发布时间：2018-11-19 10:07
【摘要】：斜拉桥索力监测是施工监控及健康监测中必不可少的环节。采用无线传感技术进行斜拉桥索力监测可以大大降低索力监测成本和提高监测效率。近年来传感技术、无线通讯技术以及集成微电子机械系统（MEMS）等技术的快速发展，促进了无线传感技术的应用和推广。目前基于无线传感技术的索力监测系统还不成熟，研究开发适用于斜拉桥结构索力监测的无线传感器具有重要的科学意义和应用价值。 本文的主要工作包括： （1）阐述了斜拉桥索力监测的研究现状与发展。鉴于索力有线监测设备的局限性，进一步阐述了无线传感器和Zigbee无线通信协议的特点与应用。 （2）阐述了索力监测的理论基础，包括信号处理理论、频域分析理论和基于频率法的索力测试原理；重点研究了拉索各阶固有频率的智能识别算法。 （3）索力监测无线传感器硬件设计与集成。根据硬件设计小型化、低功耗、低成本、高可靠性的原则，对相关电子元件进行比较和选型。采用模块化设计方法，对无线传感器传感模块、微处理单元模块、无线通信模块和能量供应模块进行硬件设计和调试。 （4）索力监测无线传感器软件设计与实现。根据索力监测的功能需求及软件设计原则，对索力监测的前处理模块、信号处理模块、索力计算分析模块和后处理模块进行软件设计与实现，并详细介绍了软件工作流程与相应的操作界面。 （5）索力监测无线传感器的实验室验证。在对实际斜拉桥结构进行索力测试之前,在实验室进行了初步验证。通过简易悬臂梁模型频率测试实验，对无线传感器的灵敏度、精度、抗噪能力等性能进行了检验。 基于本文的探索研究，可研发基于Zigbee无线通信协议的索力监测无线传感器，，实现振动数据无线采集、拉索各阶固有频率智能识别以及频率索力精确转化的完整功能。该无线传感器可降低索力监测成本，提高索力监测效率，为将来通过现代通信技术构建无线化、实时化的结构健康监测系统奠定重要基础，为结构健康监测的其他子系统提供了借鉴。
[Abstract]:Cable force monitoring of cable-stayed bridge is an essential link in construction monitoring and health monitoring. Using wireless sensing technology to monitor cable force of cable-stayed bridge can greatly reduce the cost of cable force monitoring and improve the monitoring efficiency. In recent years, the rapid development of sensing technology, wireless communication technology and integrated microelectro-mechanical system (MEMS) technology has promoted the application and popularization of wireless sensing technology. At present, the cable force monitoring system based on wireless sensing technology is not mature. It is of great scientific significance and application value to research and develop a wireless sensor suitable for cable-stayed bridge structure cable force monitoring. The main work of this paper is as follows: (1) the research status and development of cable force monitoring of cable-stayed bridges are described. In view of the limitation of cable monitoring equipment, the characteristics and application of wireless sensor and Zigbee wireless communication protocol are further expounded. (2) the theoretical basis of cable force monitoring is expounded, including signal processing theory, frequency domain analysis theory and cable force testing principle based on frequency method. (3) hardware design and integration of wireless sensor for cable force monitoring. According to the principle of miniaturization of hardware design, low power consumption, low cost and high reliability, the relative electronic components are compared and selected. The hardware design and debugging of wireless sensor module, micro-processing unit module, wireless communication module and energy supply module are carried out by using modular design method. (4) Design and implementation of wireless sensor software for cable force monitoring. According to the functional requirements of cable force monitoring and the principle of software design, the software design and implementation of pre-processing module, signal processing module, cable force calculation and analysis module and post-processing module of cable force monitoring are carried out. The software workflow and the corresponding operation interface are introduced in detail. (5) Laboratory verification of cable force monitoring wireless sensor. Prior to the cable force test of the actual cable-stayed bridge structure, preliminary verification was carried out in the laboratory. The sensitivity, accuracy and anti-noise ability of the wireless sensor are tested by the simple cantilever model frequency measurement experiment. Based on the research of this paper, the wireless sensor of cable force monitoring based on Zigbee wireless communication protocol can be developed to realize the complete function of wireless acquisition of vibration data, intelligent identification of natural frequency of every order of cable and accurate conversion of frequency cable force. The wireless sensor can reduce the cost of cable force monitoring, improve the efficiency of cable force monitoring, and lay an important foundation for the construction of wireless and real-time structural health monitoring system through modern communication technology in the future. It provides reference for other subsystems of structural health monitoring.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.27;U446
本文编号：2341972
[Abstract]:Cable force monitoring of cable-stayed bridge is an essential link in construction monitoring and health monitoring. Using wireless sensing technology to monitor cable force of cable-stayed bridge can greatly reduce the cost of cable force monitoring and improve the monitoring efficiency. In recent years, the rapid development of sensing technology, wireless communication technology and integrated microelectro-mechanical system (MEMS) technology has promoted the application and popularization of wireless sensing technology. At present, the cable force monitoring system based on wireless sensing technology is not mature. It is of great scientific significance and application value to research and develop a wireless sensor suitable for cable-stayed bridge structure cable force monitoring. The main work of this paper is as follows: (1) the research status and development of cable force monitoring of cable-stayed bridges are described. In view of the limitation of cable monitoring equipment, the characteristics and application of wireless sensor and Zigbee wireless communication protocol are further expounded. (2) the theoretical basis of cable force monitoring is expounded, including signal processing theory, frequency domain analysis theory and cable force testing principle based on frequency method. (3) hardware design and integration of wireless sensor for cable force monitoring. According to the principle of miniaturization of hardware design, low power consumption, low cost and high reliability, the relative electronic components are compared and selected. The hardware design and debugging of wireless sensor module, micro-processing unit module, wireless communication module and energy supply module are carried out by using modular design method. (4) Design and implementation of wireless sensor software for cable force monitoring. According to the functional requirements of cable force monitoring and the principle of software design, the software design and implementation of pre-processing module, signal processing module, cable force calculation and analysis module and post-processing module of cable force monitoring are carried out. The software workflow and the corresponding operation interface are introduced in detail. (5) Laboratory verification of cable force monitoring wireless sensor. Prior to the cable force test of the actual cable-stayed bridge structure, preliminary verification was carried out in the laboratory. The sensitivity, accuracy and anti-noise ability of the wireless sensor are tested by the simple cantilever model frequency measurement experiment. Based on the research of this paper, the wireless sensor of cable force monitoring based on Zigbee wireless communication protocol can be developed to realize the complete function of wireless acquisition of vibration data, intelligent identification of natural frequency of every order of cable and accurate conversion of frequency cable force. The wireless sensor can reduce the cost of cable force monitoring, improve the efficiency of cable force monitoring, and lay an important foundation for the construction of wireless and real-time structural health monitoring system through modern communication technology in the future. It provides reference for other subsystems of structural health monitoring.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.27;U446
【参考文献】
相关期刊论文 前10条
1 孙雨耕,张静,孙永进,房朝晖;无线自组传感器网络[J];传感技术学报;2004年02期
2 吴海军,陈思甜,龚尚龙,许羿,施尚伟;斜拉桥索力测试方法研究[J];重庆交通学院学报;2001年04期
3 陈刚,任伟新;基于环境振动的斜拉桥拉索基频识别[J];地震工程与工程振动;2003年03期
4 占晴;周宇;叶庆卫;王晓东;;基于ERA算法的大桥斜拉索索力检测方法[J];电子测量与仪器学报;2010年08期
5 高至飞;于向东;钱春阳;;随机减量法识别铁路桥模态参数的试验与研究[J];广东土木与建筑;2006年10期
6 郝超,裴岷山,强士中;斜拉桥索力测试新方法—磁通量法[J];公路;2000年11期
7 苏成,徐郁峰,韩大建;有限元法及样条拟合技术在频率法测量索力中的应用[J];公路;2004年12期
8 苏成,徐郁峰,韩大建;频率法测量索力中的参数分析与索抗弯刚度的识别[J];公路交通科技;2005年05期
9 周小烨;;频率法吊杆索力测量计算方法研究[J];公路交通技术;2009年05期
10 何利;邓年春;;磁通量传感器在宜宾长江大桥斜拉索监测中的应用[J];公路交通技术;2010年01期
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