Development of a Wireless Mesh Sensing System with High-Sensitivity LiNbO3 Vibration Sensors for Robotic Arm Monitoring

Du, Yi; Lin, David T.W.; Jen, Chun-Ping; Ng, Choon Wei; Chang, Chi Ying; Wen, Ya Xuan

doi:10.3390/s19030507

Cited by 3 publications

(2 citation statements)

References 20 publications

(19 reference statements)

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“…One of the proposed solutions is the use of additional sensors placed on crucial elements of the machines that transfer data to the control system, anomaly detection, etc. Such a solution was proposed, e.g., in the paper [45], where the authors present the use of high-sensitivity LiNbO 3 vibration sensors for robotic arm monitoring. The MESH network was built to create a communication layer for the sensors.…”

Section: Applicationmentioning

confidence: 99%

Phase Transitions in Wireless MESH Networks and Their Application in Early Detection of Network Coherence Loss

Paszkiewicz¹,

Bolanowski²,

Zapała³

2019

Applied Sciences

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The paper focuses on the phenomenon of phase transitions related to changes taking place directly in a network structure; i.e., in physical topology. Although these changes are related to the physical layer, they directly affect the functioning of higher layers, and thus the quality and efficiency of network transmission. The research presented herein was focused in particular on phase transformations in MESH type wireless topologies. The dependence between the values of radius (transmitter power) nodes and the coherence of the MESH network is presented. These considerations are important for understanding the dynamics of processes occurring in topological structures, and for optimizing the use of power sources for individual nodes. The paper also presents the use of phase transition analysis for early detection of network coherence loss at the physical layer level. A new mechanism for assessing the level of network communication and an active method of preventing its failure using the arbiter and a set of limited diagnostic information are described. The solution presented can be used both in Internet of Things (IoT) systems and Industry 4.0 to create a high level of reliability wireless connection infrastructure between mobile and fixed devices.

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Section: Applicationmentioning

confidence: 99%

Phase Transitions in Wireless MESH Networks and Their Application in Early Detection of Network Coherence Loss

Paszkiewicz¹,

Bolanowski²,

Zapała³

2019

Applied Sciences

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“…In addition, this tactile sensor can be integrated into wireless wearable devices designed by our team. (18)…”

Section: Introductionmentioning

confidence: 99%

Development of Lead-free Force-feedback Tactile Sensor Fabricated from BiFeO3 Piezoelectric Film

Lin¹,

Li²,

Chen³

et al. 2021

Sensors and Materials

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In this study, we develop a flexible lead-free BiFeO 3 (BFO) film sensor that can be applied on complex surfaces of devices. This sensor is fabricated by depositing BFO thin film on a polyimide (PI)-coated copper substrate. The sol-gel (SG) method and spin-coating method are utilized to prepare the BFO piezoelectric film. Two different spin-coating processes under three different sets of parameters and two different annealing temperatures are used in the fabrication. X-ray diffraction (XRD) and scanning electron microscopy are used to examine the crystallinity and surface topography of the BFO thin films, respectively. A lifetime test is performed on the device to validate the robustness of its piezoelectric properties, and a linear scaling relationship between the force and output response is obtained. We propose suitable conditions for preparing the piezoelectric film and demonstrate the reliability of this sensor.

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Study on the Sensitivity of Bare Fiber Bragg Grating for Ultrasonic Frequencies Response Under Various Temperature

Mukhtar

Zailani

2020

J. Phys.: Conf. Ser.

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This work presents a study on the sensitivity of bare fiber Bragg grating (FBG) to detect ultrasonic frequencies under various temperature. Two infrared (IR) laser with excitation wavelength, λ=1310nm and λ=1550nm were employed. Various types of FBG with operating wavelength of 1546nm, 1550nm and 1554nm were used to identify the optimum design of sensor in detecting range of ultrasonic frequencies between 5kHz until 30kHz under various surrounding temperature from 20°C until 30°C. The principle of FBG vibration detection lies in the fact that spectral shift would occur due to the acoustic-induced variations in the medium. In this study, the ultrasonic signal had been investigated by monitoring the amplitude of optical output power. At 30°C, the bare FBG with operating wavelength of 1554nm using 1310nm light source exhibits the optimum performance in detecting ultrasonic vibration frequency, in which its sensitivity was obtained as ∆P=0.10dBm. We believe that the sensitivity of the proposed sensor can be enhanced by introduce nanomaterials onto the FBG or by altering the physical structure of FBG.

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Development of a Wireless Mesh Sensing System with High-Sensitivity LiNbO3 Vibration Sensors for Robotic Arm Monitoring

Cited by 3 publications

References 20 publications

Phase Transitions in Wireless MESH Networks and Their Application in Early Detection of Network Coherence Loss

Phase Transitions in Wireless MESH Networks and Their Application in Early Detection of Network Coherence Loss

Development of Lead-free Force-feedback Tactile Sensor Fabricated from BiFeO3 Piezoelectric Film

Study on the Sensitivity of Bare Fiber Bragg Grating for Ultrasonic Frequencies Response Under Various Temperature

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