摘要:大体积混凝土结构长期应变监测系统是近年应用于建筑工程管理与维护的一项新技术，具有重要的工程价值。无线振弦传感器具有抗干扰强，精度高，传输距离远等特点，广泛应用于大体积混凝土结构中长期应变的测量。本文主要论述了大体积混凝土结构长期应变监测系统结构和无线振弦传感器工作原理，设计了振弦传感器内部的激振电路及测频电路，以及无线通讯模块，分析了无线振弦传感器的特性。无线的设计极大的方便了振弦传感器的使用，通过工程实际应用显示，本文设计的基于正弦传感器的大体积混凝土结构长期应变监测系统稳定、质量可靠、测量数据迅速准确。

Abstract: As a new technology, long-term strain monitoring system of Large concrete structures has been applied to the management and maintenance of concrete structures in recent year.It has an important project value, wireless vibrating wire sensors have a strong anti-jamming, high precision, transmission distance and other characteristics, widely used in the vibration of massive concrete structures, stress and other dynamic physical monitoring. This paper discusses the wireless strain measurement system and the working principle of wireless vibrating wire sensors, designed the excitation of vibrating wire sensors circuit and the internal excitation frequency measurement circuits, and wireless communication module, then analyzed the characteristics of wireless vibrating wire sensors. Through the practical application, it shew that the designed wireless vibrating wire sensors with good performance.