毕业设计论文-基于LABVIEW与单片机的动态扭矩测量系统设计.docVIP

动态扭矩测量装置设计（软件部分） （陕理工机械工程学院测控技术与仪器专业 082班，陕西 汉中 ） 指导教师：张士勇 [摘要] 本课题基于应变片扭矩测量的基本原理,利用应变片设计了基于labview的动态扭矩测量系统。由于电桥输出的电信号强度较弱而且容易受到干扰等问题,设计了信号处理电路,使用运算放大器对信号进行放大处理,滤波和整形电路的设计,减少了外界干扰和脉冲的抖动,有效地保证了测量结果的准确性。下位机部分以12位AD芯片来采集数据, 并通过单片机将数据发送至上位机。上位机部分则利用LabVIEW软件来设计虚拟软面板,经过串口通信程序接收来自下位机的数据,并实现了实时波形显示、历史数据调用和数据处理等功能。通过实验和数据分析可以看出,整个测量系统工作稳定,实时性好,测量结果有较高的精度。 关键词：扭矩传感器 单片机 数据采集 串口通信 LabVIEW Dynamic torque measuring device design (software part) (Grade08，Class2，Major Measuring and control technology and instrumentation specialty，College of Mechanical engineering，Shaanxi University of Technology，Hanzhong ，Shaanxi） Tutor: Zhang shi yong Abstract: This topic is based on the strain gauge measurement torque, the basic principles of the strain gauge use was designed based on the dynamic torque labview measuring system. Because the electric signals of electric bridge output intensity is weak and vulnerable to interference, design the signal processing circuit, the use of operational amplifier amplification of signal processing, filter and plastic circuit design, reduce the interference and pulse dithering, effectively ensure the accuracy of the measurement results. A machine part under 12 of the AD in the chip to collect data, and through the microcontroller will send first place machine data. The upper machine part use LabVIEW software to design the virtual soft panel, after serial interface communication program receive from a machine of data, and realize the real-time waveform display, historical data calls and data processing etc. Function. Through the experiment and data analysis, we can see that the whole measuring system stable work, good real-time, the measurement result is of high accuracy. Key words: Torque sensor microcontroller Data acquisition Serial communication Labview目录1 Output1 输出1 Non Output2 正向输入 2 In Output1 反响输入1 In Output2 反响输入 3 Non Output1 正向输入1 Output2 输出 4 Vcc+ 电源- Vcc- 电源 3.3低通滤波电路的设计 低通滤波电路采用：二阶压控型低通有源滤波，电路图