碳纳米管健康监测系统设计  

Health Monitoring System Design with Carbon Nanotubes

作　　者：徐涛 仇庆东 卢少微[2] 於正超 马克明[2] XU Tao;QIU Qing-dong;LU Shao-wei;YU Zheng-chao;MA Ke-ming(College of Control Engineering,Shenyang Aerospace University, Shenyang 110136,China;Faculty of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学自动化学院,辽宁沈阳110136 [2]沈阳航空航天大学工程学部,辽宁沈阳110136

出　　处：《仪表技术与传感器》2018年第10期107-112,共6页Instrument Technique and Sensor

基　　金：沈阳科学计划重点科技研发计划项目(17-208-9-00);国家自然科学基金项目(11602150);航空科学基金项目(2016ZA54004);辽宁省自然科学基金项目(20170540695)

摘　　要：针对飞行器表面结构健康监测方法需求,设计了一种碳纳米管薄膜纳米传感器应变损伤监测系统。系统以C8051F060单片机为核心,经过信号滤波、信号放大、A/D采集等过程,将微弱的电阻信号转化为便于直观分析的电压信号,再通过USB串口将采集后的数据传输到基于LabVIEW平台设计的监测界面,从而实现对基材应变损伤进行长时间实时在线监测。利用设计的调理采集系统和Fluke2638A数据采集表分别对基材形变过程中产生的电阻变化进行多组重复性测试。结果表明,该监测系统的设计误差小于1%,可见该系统性能较为稳定,同时在上位机中实现了对复合材料的电阻测量、电阻变化率测量、电阻变化率波形显示、历史数据回放等功能。A strain monitoring system for carbon nanotube thin film nanometer sensor was designed to meet the needs of aircraft surface structure health monitoring method.C8051F060 microcontroller was as the core of the system,which went through the signal filtering,signal amplification,A/D acquisition process,and transfered the weak resistance signal into visual voltage signal,and then through the USB serial port transferring collected data to the LabVIEW platform in order to achieve the substrate strain damage for a long time real-time online monitoring.The design of the conditioning system and the Fluke2638A data acquisition table were used to process the deformation of the substrate during the repeated changes in the repeated test.The results show that the design error of the monitoring system is less than 1%.It can be seen that the performance of the system is stable.At the same time,it realizes the resistance measurement of the composite material,the measurement of the resistance change rate,the waveform of the resistance change rate and the historical data playback possible.

关 键 词：碳纳米管 复合材料 监测系统 电阻变化率 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]