A Four-Channel, &lt;formula formulatype="inline"&gt;&lt;tex Notation="TeX"&gt;${\pm} $&lt;/tex&gt;&lt;/formula&gt;36 V, 780 kHz Piezo Driver Chip for Structural Health Monitoring

Aquino, Christopher M.; Zhang, Dejing; Murmann, Boris

doi:10.1109/jssc.2014.2315615

Cited by 12 publications

References 18 publications

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An energy-efficient cyber-physical system for wireless on-board aircraft structural health monitoring

Khodaei

Aliabadi

2019

Mechanical Systems and Signal Processing

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In this paper, an energy-efficient cyber physical system using piezoelectric transducers (PZTs) and wireless sensor networks (WSN) is proposed, designed and experimentally validated for on-board aircraft structural health monitoring (SHM). A WSN is exploited to coordinate damage detection using PZTs distributed on the whole aircraft. An active sensing methodology is adopted for PZTs to evaluate the structural integrity in a pitch-catch manner. The system configuration and operation principle are discussed in the first place. Then, the detailed hardware design was introduced. The proposed system is not only characterized as low-power, high-compactness and wireless, but also capable of processing actuating-sensing signals at megahertz, generating actuating signals with great flexibility, handling multiple actuating-sensing channels with marginal crosstalk. The design was implemented on a 4-layer printed circuit board (8 × 6.5 cm) and evaluated on a large-scale composite fuselage. A 5 MHz sampling rate for actuating and 1.8 MHz for sensing (8 channels) were realized, and the accuracy was validated by comparing the results with those from an oscilloscope. The crosstalk issue caused by actuation on sensing channels is properly addressed using a 2-stage attenuation method. An ultra-low current (81.7 µA) was measured when no detection was required; the average current was 0.45 mA with a detection rate of twice per hour, which means the system can continuously work for up to 12.6 months for 2 AA batteries. Eventually, an example of damage detection is provided, showing the capability of such a system in SHM.

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An energy-efficient cyber-physical system for wireless on-board aircraft structural health monitoring

Khodaei

Aliabadi

2019

Mechanical Systems and Signal Processing

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A CMOS SoC for Wireless Ultrasonic Power/Data Transfer and SHM Measurements on Structures

2022

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This paper describes a highly-integrated CMOS system-on-chip (SoC) for active structural health monitoring (SHM). The chip integrates ultrasonic power and bidirectional half-duplex data transfer, a power management unit (PMU), and an ultrasound transceiver to enable wireless ultrasonically-coupled sensor SHM networks on structures. The PMU includes an active bias-flip rectifier with off-delay compensation, a high-efficiency dual-path DC-DC converter with inductor time-sharing, and five switched-capacitor DC-DC converters to generate multi-level spectrally band-limited pulses for guided-wave SHM. The chip was fabricated in a standard 180 nm process and has a die area of 2 × 2 mm 2 . Test results show power conversion efficiency (PCE) > 85% for the active rectifier, > 70% for the inductive DC-DC converter, and > 60% for the switched-capacitor DC-DC converters. Output pulses have a peak-to-sidelobe ratio (PSL) > 30 dB and worst-case out-of-band emissions < −30 dB, respectively. The SoC was integrated with a lowpower microcontroller and passive components to realize miniaturized (15 mm × 30 mm) wireless SHM nodes. A set of nodes was deployed on an SHM test-bed (carbon fiber reinforced polymer sheet) representing an airframe panel. Tests on this wireless network confirm both long-range ultrasound power/data transfer and the ability to detect structural damage.INDEX TERMS Energy harvesting, structural health monitoring (SHM), ultrasound power/data transfer.

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A programmable CMOS transceiver for structural health monitoring

Tang

Zhao

Mandal

2018

2018 IEEE Custom Integrated Circuits Conference (CICC)

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We describe a highly-integrated CMOS transceiver for active structural health monitoring (SHM). The chip actuates piezoelectric transducers and also senses ultrasound waves received by the same or another transducer. The transmitter uses an integer-N frequency synthesizer and pulse-width modulation (PWM) to generate low-distortion, band-limited waveforms up to 12.7 Vpp with center frequency from ∼0.1-2.75 MHz. The integrated offset-canceling fully-differential receiver has programmable gain and bandwidth, and uses quadrature demodulation to extract both amplitude and phase of the received waveforms for further signal processing. The transceiver was fabricated in a 0.5 µm CMOS process and has been validated using (2D) damage localization on an SHM test bed.

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A Four-Channel, <formula formulatype="inline"><tex Notation="TeX">${\pm} $</tex></formula>36 V, 780 kHz Piezo Driver Chip for Structural Health Monitoring

Cited by 12 publications

References 18 publications

An energy-efficient cyber-physical system for wireless on-board aircraft structural health monitoring

An energy-efficient cyber-physical system for wireless on-board aircraft structural health monitoring

A CMOS SoC for Wireless Ultrasonic Power/Data Transfer and SHM Measurements on Structures

A programmable CMOS transceiver for structural health monitoring

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