A Wireless and Passive Online Temperature Monitoring System for GIS Based on Surface-Acoustic-Wave Sensor

Guo, Ma; Wu, Zheng-Mao; Zhou, Hongyang; Jiang, Jun; Chen, Wei-Xue; Zheng, Shusheng; Li, Chengrong; Li, Xiong; Wang, Zengbin

doi:10.1109/tpwrd.2015.2482985

Cited by 37 publications

(21 citation statements)

References 19 publications

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“…The electronic reader sends an interrogation signal with an operation frequency of f 0 to the SAW sensor; it returns a response signal with a frequency of f 1 containing respiration information. The principle of a wireless SAW sensor is well known [16] and will not be discussed here.…”

Section: Use Of Monitoring Systems With Wireless Communication Capabimentioning

confidence: 99%

Flexible surface acoustic wave respiration sensor for monitoring obstructive sleep apnea syndrome

Jin

Zhang

Dong

et al. 2017

J. Micromech. Microeng.

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Obstructive sleep apnea syndrome (OSAS) has received much attention in recent years due to its significant harm to human health and high morbidity. A respiration monitoring system is needed to detect OSAS, so that the patient can receive treatment timely. Wired and wireless OSAS monitoring systems have been developed, but they require wire connection and batteries to operate, and they are bulky, heavy and not user-friendly. In this paper, we propose to use flexible surface acoustic wave (SAW) microsensor to detect and monitor OSAS by measuring humidity change associated with respiration of a person. SAW sensors on rigid 128°YX LiNbO 3 substrate are also characterized for this application. Results show both types of the SAW sensors are suitable for OSAS monitoring with good sensitivity, repeatability and reliability, and the response/recovery times for the flexible SAW sensors iare 1.125 and 0.75 s respectively. Our work demonstrates the potential of an innovative flexible microsensor for detection and monitoring of OSAS.

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Section: Use Of Monitoring Systems With Wireless Communication Capabimentioning

confidence: 99%

Flexible surface acoustic wave respiration sensor for monitoring obstructive sleep apnea syndrome

Jin

Zhang

Dong

et al. 2017

J. Micromech. Microeng.

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“…Many proven SAW-based sensors were developed for sensing gas species, temperature, force, torque, and so on [1][2][3][4][5]. Recently, referring to the magnetostrictive thin film as the sensing material or magnetoresistor as the external loaded sensor, a new concept of SAW-based magnetic/current sensor were proposed, allowing possible features of fast response, high sensitivity, strong anti-interference, and small size.…”

Section: Introductionmentioning

confidence: 99%

Development of a Magnetostrictive FeNi Coated Surface Acoustic Wave Current Sensor

et al. 2017

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Featured Application: The developed magnetostrictive FeNi coated Surface acoustic wave sensor with high sensitivity; fast response; strong anti-interference; good linearity and repeatability; and lower hysteresis error will be a potential candidate for current monitoring application in smart grid line testing; metallurgical and power supplies; rail transit safety warnings and rescue.Abstract: A magnetostrictive FeNi-coated surface acoustic wave (SAW)-based current sensor was proposed in this work. The weak remanence and hysteresis effect of the FeNi itself contributes to suppress the asymmetry in sensor response at increasing and decreasing current. The sensor response was simulated by solving the coupled electromechanical field equation in layered structure considering the magnetostrictive effect and an approach of effective dielectric constant. The effects from the aspect ratio and thickness of the FeNi film on sensor response were analyzed to determine the optimal design parameters. Differential oscillation structure was used to form the sensor, in which, the FeNi thin film was deposited along the SAW propagation of the sensor chip by using RF magnetron sputtering. The magnetostrictive effect of the FeNi coating induced by the magnetic loading generates the perturbation in SAW velocity, and corresponding oscillation frequency. High sensitivity of 10.7 KHz/A, good linearity and repeatability, lower hysteresis error of 0.97% were obtained from the developed prototype 150 MHz SAW FeNi coated current sensor.

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“…Another application in the wireless measurement using the SAW device was an increasing need for remote monitoring and mutual communication. Figure 7c reports a wireless temperature sensing using SAW wireless mutual communication [113]. This wireless sensor had an antenna as the communication bridge for a temperature modulation.…”

Section: Mems Surface Acoustic Wave (Saw) and Piezoelectric Micromachmentioning

confidence: 99%

Development Trends and Perspectives of Future Sensors and MEMS/NEMS

et al. 2019

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With the fast development of the fifth-generation cellular network technology (5G), the future sensors and microelectromechanical systems (MEMS)/nanoelectromechanical systems (NEMS) are presenting a more and more critical role to provide information in our daily life. This review paper introduces the development trends and perspectives of the future sensors and MEMS/NEMS. Starting from the issues of the MEMS fabrication, we introduced typical MEMS sensors for their applications in the Internet of Things (IoTs), such as MEMS physical sensor, MEMS acoustic sensor, and MEMS gas sensor. Toward the trends in intelligence and less power consumption, MEMS components including MEMS/NEMS switch, piezoelectric micromachined ultrasonic transducer (PMUT), and MEMS energy harvesting were investigated to assist the future sensors, such as event-based or almost zero-power. Furthermore, MEMS rigid substrate toward NEMS flexible-based for flexibility and interface was discussed as another important development trend for next-generation wearable or multi-functional sensors. Around the issues about the big data and human-machine realization for human beings’ manipulation, artificial intelligence (AI) and virtual reality (VR) technologies were finally realized using sensor nodes and its wave identification as future trends for various scenarios.

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A Wireless and Passive Online Temperature Monitoring System for GIS Based on Surface-Acoustic-Wave Sensor

Cited by 37 publications

References 19 publications

Flexible surface acoustic wave respiration sensor for monitoring obstructive sleep apnea syndrome

Flexible surface acoustic wave respiration sensor for monitoring obstructive sleep apnea syndrome

Development of a Magnetostrictive FeNi Coated Surface Acoustic Wave Current Sensor

Development Trends and Perspectives of Future Sensors and MEMS/NEMS

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