机敏水泥基传感元件信号的无线采集传输系统
Wireless Acquisition and Transmission System of Sensing Signals of Smart Cement-Based Sensors
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摘要: 为实现用于混凝土结构应力(受力)/应变(变形)监测的机敏水泥基传感元件传感信号的无线采集传输, 介绍了机敏水泥基传感元件的概念及其传感原理, 并基于机敏水泥基传感元件传感信号的特点和模块化的设计思路, 提出了信号的无线采集传输系统设计方法。重点分析了该无线采集传输系统的工作原理, 给出了系统的硬件电路和软件设计流程图, 并介绍了各硬件单元及其集成方法。结果表明: 所提出的机敏水泥基传感元件信号的无线采集传输系统, 具有电路简单、易于实现, 采集传输可靠性高, 价格低廉, 安装方便, 简单实用等特点, 适合在混凝土结构健康监测中推广应用。Abstract: In order to realize wireless acquisition and transmission of the sensing signals of the smart cement-based sensors for stress/strain monitoring of concrete structures, the conception and the sensing principle of smart cement-based sensors were introduced, and the design method was presented based on the characters of the signals of smart cement-based sensors and the modularized program. The operating principle of the wireless acquisition and transmission system was especially analyzed, and the hardware circuit and the software program chart were presented, then every hardware element and the integration method were discussed in detail. The results showed that the presented wireless acquisition and transmission system of the sensing signals of smart cement-based sensors had such advantages as simple circuit easy to realize, high reliability, low cost, convenient setting and good practicability, and it was suitable for application in health monitoring of concrete structures.