基于锁相放大器的万能试验机采集系统研制  

Development of universal testing machine's acquisition system based on lock-in amplifier

作　　者：温静馨[1] 李龙[1] 

机构地区：[1]沈阳化工大学计算机科学与技术学院,辽宁沈阳110142

出　　处：《电子设计工程》2012年第3期112-114,118,共4页Electronic Design Engineering

摘　　要：基于STM32、STM8处理器,设计完成了万能试验机的多个功能模块。为了提高小信号的采集精度与速度,用多处理器设计了一种混合式的锁相放大器,并运用数字处理进行进一步处理,具有很高的性价比。在位移信号采集中,运用STM8S实现了低成本的设计。实验表明,本系统在速度与精度上满足万能试验机要求,总体性价比高。Based on STM32 and STM8, an implement solution of the universal testing machine is presented. In order to improve the speed and accuracy of weak signal detection, using multi-processor designed with a hybrid lock-in amplifier, and using numerical muhipoint average for further processing, it also has highly cost-effective. In the displacement signal acquisition, using STM8S achieve a low-coast design. Experiments shows that the system meet the requirements of universal testing machine in the speed and accuracy, and the overall cost-effective.

关 键 词：万能试验机 锁相放大器 数字多点平均 光电编码器 

分 类 号：TH871[机械工程—仪器科学与技术]