混凝土温湿度测控系统的研究

发布时间：2018-01-15 14:06

本文关键词：混凝土温湿度测控系统的研究　出处：《天津科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：混凝土在现代工程建设中占有重要地位。在大体积混凝土的浇筑氧化过程中,为避免其出现裂缝,对混凝土氧化过程实施温湿度监控非常必要。本课题通过选用不同的硬件芯片和软件开发平台,克服了现有混凝土温湿度巡检仪和温湿度巡检系统在硬件芯片选择、电路设计简易性以及软件的编程功能等方面存在的不足。本课题主体上采用虚拟仪器技术,结合单片机技术进行系统软硬件的设计和构建。硬件方面,包括温度传感器、湿度传感器、单片机及其外围芯片(键盘控制模块、时钟模块、存储模块、液晶显示模块)的选择,以及单片机控制系统与外围芯片的电路设计与连接。软件方面,包括上位机软件和下位机软件两个方面。在上位机软件设计中,通过虚拟仪器开发平台LabVIEW进行编程,构建了具有丰富的人机对话界面的测试系统,实现了参数设置功能、温度显示功能、数据存储与查询功能、自动显示测试时间功能、信息提示功能等功能。在下位机软件设计中,以单片机技术为核心,通过ICCAVR开发工具,采用C语言进行编程,包括温度数据采集模块、液晶显示模块等模块的程序设计以及模拟I2C总线程序设计等。系统提供了RS232通信方式来实现上位机与下位机之间的通信。并且在系统硬件电路及软件设计上引入了一定的抗干扰措施。对混凝土温湿度进行控制采用PID控制算法与开关量控制相结合的控制方式,使混凝土温湿度能够稳定的保持在设定范围内,并且达到节能的目的。多次的实验结果表明,本系统比较稳定可靠,且安装调试比较方便,测试结果准确。采用本系统可以方便地实现对于混凝土温湿度的监控,其测量值可作为进行后续温湿度控制的依据,从而保证混凝土氧化在正常的温度下进行,具有很好的应用前景。
[Abstract]:Concrete plays an important role in modern engineering construction. In order to avoid cracks in the process of pouring and oxidation of mass concrete. It is very necessary to monitor the temperature and humidity in the oxidation process of concrete. In this paper, different hardware chips and software development platform are selected. Overcome the shortcomings of the existing concrete temperature and humidity inspection instrument and temperature and humidity patrol system in the selection of hardware chips, circuit design simplicity and software programming functions. Virtual instrument technology is used in this subject. The hardware and software of the system are designed and constructed based on MCU technology. The hardware includes temperature sensor, humidity sensor, single chip microcomputer and its peripheral chips (keyboard control module, clock module, storage module). The choice of LCD module, and the circuit design and connection between MCU control system and peripheral chip. Software, including PC software and lower computer software. In the design of PC software. Through the virtual instrument development platform LabVIEW programming, a test system with rich man-machine dialogue interface has been constructed. The functions of parameter setting, temperature display, data storage and query have been realized. In the software design of the lower computer, the single chip computer technology is the core, through the ICCAVR development tool, C language is used to program. Including temperature data acquisition module. The system provides the RS232 communication mode to realize the communication between the upper computer and the lower computer, and the hardware circuit and software of the system. Some anti-interference measures are introduced in the design of the parts. The control of temperature and humidity of concrete is based on the combination of PID control algorithm and switch control. So that the temperature and humidity of concrete can be kept in the set range, and achieve the purpose of energy saving. The results of many experiments show that the system is relatively stable and reliable, and easy to install and debug. The system can be used to monitor the temperature and humidity of concrete conveniently, and the measured value can be used as the basis for subsequent temperature and humidity control, thus ensuring the oxidation of concrete at normal temperature. It has a good application prospect.
【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU755

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