SMA增强复合结构的RFID传感标签技术及其监测方法研究

项目名称： SMA增强复合结构的RFID传感标签技术及其监测方法研究

项目编号： No.50875132

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 邱自学

作者单位： 南通大学

项目金额： 29万元

中文摘要： 1. 提出和设计了RFID传感标签技术框架，制定了传感器与RFID标签、RFID标签与读写器、读写器与上位机的接口通信协议。 2. 选用微控制器C8051F330，基于TDC（时间-数字转换器）技术的PS021芯片作为电容测量模块，以2.4GHZ的PTR4000射频模块为无线收发模块。在IDE环境下完成软件的设计和编译，实现了数据采集、存储、发送、接收以及多标签防冲突功能。 3. 以SMA丝做电容电极与复合材料基体构成电容测量模型， 基于RFID传感标签实现结构内部传感信息的无线收发，构建了结构无线健康监测系统。 4. 对RFID传感标签系统进行了相关性能参数实验。与LCR仪和PS021电容测量评估系统相比，电容测量误差小于2%，数据传输距离35米左右，数据丢失率在2%以下，多标签通信时数据冲突率在 2%左右。 5. 制备了不同布局与体积比的埋入SMA丝的复合构件，在CMT-5000试验机上对构件进行拉伸、弯曲实验，在冲击试验机LVI-200上进行冲击实验，结果表明复合构件中埋入的SMA丝间电容量随着应变的变化而变化，根据获取的多通道电容量数据可分析判断冲击损伤的位置和程度。

中文关键词： 复合结构；结构健康监测；形状记忆合金；无线射频识别；传感标签

英文摘要： 1. The overall framework of RFID sensor-tag technology and the interference communication protocols of sensor and RFID tag, RFID tag and reader, reader and the upper computer were designed. 2. C8051F330 SCM is chosen as the microcontroller, PS021 chip based on TDC(Time-to-Digital Converter) is selected as the capacitor measurement module, and wireless transceiver module PTR4000 worked at 2.4GHZ as the radio frequency module. The program was compiled and debugged under the IDE environment to carry out many functions such as data acquisition, storage, sending, receiving, and multi-tag anti-collision. 3. A capacitance model is put forward which using the SMA wires as the capacitor electrodes and the sample matrix as the dielectric. The capacitance signals in the structure are measured by the chip PS021, wireless receiving and sending are realized by the RFID sensor-tag technology, and then the wireless structural health monitoring system is realized. 4. The performance parameters of the RFID sensor-tag system were measured. Compared with LCR meter and PS021 capacitance measurement evaluation system, its capacitance measurement relative error is less than 2%, data transmission distance is on a level of 35m(without plus antenna), data loss rate is below 2%, and data collision rate of multi-tag communication is around 2%. 5. Some different SMA-reinforced composite components were designed using different specification and layout SMA wires. The tensile and bending experiments were realized on the CMT-5000 material testing machine, and impact tests were done on the LVI-200 impact test machine, the results show that the capacitance signals of the SMA-reinforced composite components change with the stress-strain., the damage position and degree can be obtained by analyzing the capacitance signals of several channels.

英文关键词： Composite structures; Structural health monitoring; Shape memory alloy; Radio frequency identification; Sensor-tag