一种基于两级判别逻辑的小型化冲击区域监测系统

doi:10.7527/S1000-6893.2013.0537

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一种基于两级判别逻辑的小型化冲击区域监测系统

邱雷, 钱伟锋, 袁慎芳, 梅寒飞

南京航空航天大学机械结构力学及控制国家重点实验室, 江苏南京 210016

收稿日期:2013-11-06 修回日期:2014-01-23 出版日期:2014-09-25 发布日期:2014-02-26
通讯作者: 袁慎芳，Tel.：025-84893460 E-mail：ysf@nuaa.edu.cn E-mail:ysf@nuaa.edu.cn
作者简介:邱雷男，博士，副教授。主要研究方向：结构健康监测、信号处理、系统集成等。Tel：025-84896637 E-mail：ql19830925@nuaa.edu.cn；袁慎芳女，博士，教授，博士生导师。主要研究方向：结构健康监测、智能材料、信号信息处理、先进传感技术等。Tel：025-84893460 E-mail：ysf@nuaa.edu.cn
基金资助:
国家杰出青年科学基金（51225502）；国家自然科学基金重点项目（50830201）；江苏省高校优势学科建设工程；青蓝工程

A Two-step Decision Logic Based Miniaturized Impact Region Monitoring System

QIU Lei, QIAN Weifeng, YUAN Shenfang, MEI Hanfei

State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China

Received:2013-11-06 Revised:2014-01-23 Online:2014-09-25 Published:2014-02-26
Supported by:
National Science Fund for Distinguished Young Scholars (51225502); National Natural Science Foundation of China(50830201); Priority Academic Program Development of Jiangsu Higher Education Institutions; Qing Lan Project

摘要/Abstract

摘要：

对复合材料结构的冲击事件进行机载在线监测具有迫切的应用需求。面向机载研制了一种基于两级判别逻辑的小型化冲击区域监测系统。首先，提出了一种基于两级判别逻辑的冲击区域定位算法，能够在大规模可编程逻辑门阵列（FPGA）中实现基于冲击数字序列的冲击事件在线记录，并提高了冲击区域定位的准确性。其次，研制了小型化冲击区域监测系统，采用无源滤波器和比较器，将压电传感器输出的冲击响应信号直接转换为冲击数字序列，采用FPGA替代数字电路并实现冲击监测，简化了常规冲击监测系统的电路，降低了系统的尺寸和功耗。系统具有体积小、重量轻、功耗低以及支持传感器数目多的特点。验证结果表明：该系统能够正确响应每次冲击事件并能准确定位冲击发生的区域。

关键词: 复合材料结构, 结构健康监测, 冲击监测系统, 压电传感器, 数字序列

Abstract:

It is highly necessary to monitor impact events occurring on composite structures on line and on board. In this paper, an airborne oriented miniaturized impact region monitoring system is developed based on a two-step decision logic. First, the two-step decision logic based impact region localization method is proposed, which is realized in a field programmable gate array (FPGA) and used to record impact events online. The accuracy of impact region localization is improved by using this method. Second, a miniaturized impact region monitoring system is developed. In this system, passive filters and comparators are used to replace the analog circuit and turn the impact response signals directly into digital sequences, and an FPGA is used to replace the digital circuit, which simplifies the circuit and greatly reduces the size and weight of the impact monitoring system. The system has the following characteristics: small size, light weight, low power consumption and numerous piezoelectric transducers supported. The experimental validation results obtained on a carbon fiber composite wing box structure with many stiffeners and bolts show that the impact region monitoring system can respond to impact events and localize them accurately.

Key words: composite structure, structural health monitoring, impact monitoring system, piezoelectric transducer, digital sequence

中图分类号:

V19
TP302

邱雷, 钱伟锋, 袁慎芳, 梅寒飞. 一种基于两级判别逻辑的小型化冲击区域监测系统[J]. 航空学报, 2014, 35(9): 2551-2558.

QIU Lei, QIAN Weifeng, YUAN Shenfang, MEI Hanfei. A Two-step Decision Logic Based Miniaturized Impact Region Monitoring System[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(9): 2551-2558.

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[14] Markmiller J F C, Chang F K. Sensor network optimization for a passive sensing impact detection technique[J]. Structural Health Monitoring, 2010, 9(1): 25-39.

[15] Yuan S F, Liu P P, Qiu L. A miniaturized composite impact monitor and its evaluation research[J]. Sensors and Actuators A: Physical, 2012, 184: 182-192.

E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

一种基于两级判别逻辑的小型化冲击区域监测系统

A Two-step Decision Logic Based Miniaturized Impact Region Monitoring System

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