Development of an impedance-based wireless sensor node for structural health monitoring

This paper presents the development and application of a miniaturized impedance sensor node for structural health monitoring (SHM). A large amount of research has been focused on utilizing the impedance method for structural health monitoring. The vast majority of this research, however, has required the use of expensive and bulky impedance analyzers that are not suitable for field deployment. In this study, we developed a wireless impedance sensor node equipped with a low-cost integrated circuit chip that can measure and record the electrical impedance of a piezoelectric transducer, a microcontroller that performs local computing and a wireless telemetry module that transmits the structural information to a base station. The performance of this miniaturized and portable device has been compared to results obtained with a conventional impedance analyzer and its effectiveness has been demonstrated in an experiment to detect loss of preload in a bolted joint. Furthermore, for the first time, we also consider the problem of wireless powering of such SHM sensor nodes, where we use radio-frequency wireless energy transmission to deliver electrical energy to power the sensor node. In this way, the sensor node does not have to rely on an on-board power source, and the required energy can be wirelessly delivered as needed by human or a remotely controlled robotic device.

[1]  William C. Brown,et al.  The history of wireless power transmission , 1996 .

[2]  Jerome P. Lynch,et al.  Design of Piezoresistive MEMS-Based Accelerometer for Integration with Wireless Sensing Unit for Structural Monitoring , 2003 .

[3]  C. Liang,et al.  Truss Structure Integrity Identification Using PZT Sensor-Actuator , 1995 .

[4]  Charles R. Farrar,et al.  Piezoelectric Active Sensor Self-Diagnostics Using Electrical Admittance Measurements , 2006 .

[5]  Sang H. Choi,et al.  Microwave power for smart material actuators , 2004 .

[6]  Daniel J. Inman,et al.  A wireless active sensing system for impedance-based Structural Health Monitoring , 2005 .

[7]  Andrei N Zagrai,et al.  Damage Identification in Aging Aircraft Structures with Piezoelectric Wafer Active Sensors , 2004 .

[8]  Charles R. Farrar,et al.  Energy Harvesting for Structural Health Monitoring Sensor Networks , 2008 .

[9]  Jerome P. Lynch Design of a wireless active sensing unit for localized structural health monitoring , 2005 .

[10]  Gregg E. Maryniak,et al.  Status of international experimentation in wireless power transmission , 1996 .

[11]  W. Cao,et al.  Smart materials and structures. , 1992, Proceedings of the National Academy of Sciences of the United States of America.

[12]  Jerome P. Lynch,et al.  A summary review of wireless sensors and sensor networks for structural health monitoring , 2006 .

[13]  Hoon Sohn,et al.  Overview of Piezoelectric Impedance-Based Health Monitoring and Path Forward , 2003 .

[14]  Andrei Zagrai,et al.  Embedded Active Sensors for In-Situ Structural Health Monitoring of Thin-Wall , 2002 .

[15]  Jerome P. Lynch,et al.  Embedment of structural monitoring algorithms in a wireless sensing unit , 2003 .

[16]  Suresh Bhalla,et al.  High frequency piezoelectric signatures for diagnosis of seismic/blast induced structural damages , 2004 .

[17]  Gyuhae Park,et al.  Sensing Network Paradigms for Structural Health Monitoring , 2006 .

[18]  Hoon Sohn,et al.  Structural Health Monitoring Using Modular Wireless Sensors , 2003 .

[19]  Charles R. Farrar,et al.  Performance assessment and validation of piezoelectric active-sensors in structural health monitoring , 2006 .

[20]  Charles R. Farrar,et al.  Coupling sensing hardware with data interrogation software for structural health monitoring , 2006 .

[21]  Daniel J. Inman,et al.  IMPEDANCE-BASED HEALTH MONITORING OF CIVIL STRUCTURAL COMPONENTS , 2000 .

[22]  G. C. Smith,et al.  Frequency-Shaping with Spatial Compensators , 2000 .

[23]  Keith Worden,et al.  An Overview of Intelligent Fault Detection in Systems and Structures , 2004 .

[24]  Suresh Bhalla,et al.  Structural impedance based damage diagnosis by piezo‐transducers , 2003 .

[25]  Billie F. Spencer,et al.  Smart sensing technology: opportunities and challenges , 2004 .

[26]  Naveen Verma,et al.  Design considerations for ultra-low energy wireless microsensor nodes , 2005, IEEE Transactions on Computers.

[27]  Anne S. Kiremidjian,et al.  A modular, wireless damage monitoring system for structures , 1998 .