基于等间距磁晶格应变检测的基本原理,设计了信号检测和波形转换电路,将对应变的检测转化成为对时间量的计测,并且推导了时间量与构件应变之间的数学表达式。以8051单片机为核心,研究了应变检测系统的数据采集以及和上位机的通讯方法。利用PC机完成对检测结果的显示、存储、打印等功能。整个应变检测系统实现了以非接触的方式对机械构件应变进行实时的在线检测。 Based on the principle of equidistance magnetic lattice strain detection, a signal detection and waveform conversion circuit is designed. The detection of strain is transformed into the measurement of the amount of time, and the mathematical expression between the amount of time and the strain of the component is deduced. Taking the 8051 single-chip microcomputer as the core, the data acquisition of the strain detection system and the communication method with the host computer are studied. Using PC to complete the test results display, storage, printing and other functions. The entire strain sensing system enables real-time on-line inspection of mechanical components strain in a non-contact manner.