Development of Wireless and Passive SAW Temperature Sensor with Very High Accuracy

Gao, Xu; Cheng, Liang; Xue, Xufeng; Zhai, Shoupei; Liang, Yong; Wang, Wen; Liu, Mengwei; Zhu, Jiaqi; Li, Zhuoyue

doi:10.3390/app11167422

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…Additionally, Streque et al [295] managed to fabricate a high-Q SAW resonator using an AlN/sapphire structure for wireless monitoring of temperatures up to 400 °C. Gao et al [296] presented a highsensitivity temperature measurement technique by processing SAW data via adaptive least mean square (LMS) algorithm. They reported excellent accuracy of ± 0.2 °C within a range of -30 -100 °C.…”

Section: ) Temperature Sensorsmentioning

confidence: 99%

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Hamed,

O’Donnell,

Lishchenko

et al. 2023

IEEE Sensors J.

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In the era of digitalization, there is a huge focus on capturing data from manufacturing processes and systems. Since the promotion of Industry 4.0, the industrial marketplace has been crowded with solution providers who excel in capturing and aggregating data on the cloud and presenting it on dashboards. From machine states to production targets, this type of data has become more readily available from tools, controllers, switches, and factory bus systems. As the industry pushes deeper into the machine for information and aspires to have smart machines that can feel and react to experiences during the manufacturing process, then more sophisticated technology is necessary. Strain sensor technology is a logical measurement principle to address this challenge for many industrial sectors. For researchers and industrialists to progress toward the smart machine agenda, there must be a firm grasp of the "technology-solution fit," i.e., what strain technology could provide the most appropriate solution. This paper presents a review of the state of the art in strain sensors that are foreseen as frontrunners to enable next-generation smart components and intelligent tools. The review focuses on industrial strain sensing technologies that are at a mature place on the technology readiness levels (TRLs) and present themselves as highly practical solutions for smart components and digitized machines, considering sensitivity, powered or passive, wired or wireless, and robustness. Through this review, researchers and industrialists will have a suite of solutions to move on with their innovative designs of smart machines based on embedded strain sensor technology.

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Section: ) Temperature Sensorsmentioning

confidence: 99%

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Hamed,

O’Donnell,

Lishchenko

et al. 2023

IEEE Sensors J.

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“…SAW devices are also good candidates for pressure and temperature sensing [ 63 , 64 , 65 , 66 ]. In the Rodríguez-Madrid et al [ 66 ] study, a SAW-based pressure sensor was reported with a sensitivity of 0.33 MHz/bar, a working frequency between 10 to 14 GHz with high-order harmonic acoustic modes.…”

Section: Current Applicationsmentioning

confidence: 99%

Trends and Applications of Surface and Bulk Acoustic Wave Devices: A Review

2022

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The past few decades have witnessed the ultra-fast development of wireless telecommunication systems, such as mobile communication, global positioning, and data transmission systems. In these applications, radio frequency (RF) acoustic devices, such as bulk acoustic waves (BAW) and surface acoustic waves (SAW) devices, play an important role. As the integration technology of BAW and SAW devices is becoming more mature day by day, their application in the physical and biochemical sensing and actuating fields has also gradually expanded. This has led to a profusion of associated literature, and this article particularly aims to help young professionals and students obtain a comprehensive overview of such acoustic technologies. In this perspective, we report and discuss the key basic principles of SAW and BAW devices and their typical geometries and electrical characterization methodology. Regarding BAW devices, we give particular attention to film bulk acoustic resonators (FBARs), due to their advantages in terms of high frequency operation and integrability. Examples illustrating their application as RF filters, physical sensors and actuators, and biochemical sensors are presented. We then discuss recent promising studies that pave the way for the exploitation of these elastic wave devices for new applications that fit into current challenges, especially in quantum acoustics (single-electron probe/control and coherent coupling between magnons and phonons) or in other fields.

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“…Compared to the LC passive wireless sensing system, an SAW-based passive wireless sensing system can achieve much longer transmission distance due to the higher quality factor of SAW devices [13,14]. Gao et al proposed a SAW temperature sensor with an operating frequency of about 430 MHz and a detection range of −30-100 • C, which can achieve wireless transmission of 0.5 m [15]. However, the current SAW-based passive wireless sensors are mostly designed at a low resonant frequency around 433 MHz, which leads to the relatively large size of SAW devices and antenna, hindering their application in wearable devices.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of a Surface Acoustic Wave Device for Wearable Body Temperature Monitoring

Xie,

Deng,

Chen

et al. 2024

Micromachines

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Continuous monitoring of vital signs based on advanced sensing technologies has attracted extensive attention due to the ravages of COVID-19. A maintenance-free and low-cost passive wireless sensing system based on surface acoustic wave (SAW) device can be used to continuously monitor temperature. However, the current SAW-based passive sensing system is mostly designed at a low frequency around 433 MHz, which leads to the relatively large size of SAW devices and antenna, hindering their application in wearable devices. In this paper, SAW devices with a resonant frequency distributed in the 870 MHz to 960 MHz range are rationally designed and fabricated. Based on the finite-element method (FEM) and coupling-of-modes (COM) model, the device parameters, including interdigital transducer (IDT) pairs, aperture size, and reflector pairs, are systematically optimized, and the theoretical and experimental results show high consistency. Finally, SAW temperature sensors with a quality factor greater than 2200 are obtained for real-time temperature monitoring ranging from 20 to 50 °C. Benefitting from the higher operating frequency, the size of the sensing system can be reduced for human body temperature monitoring, showing its potential to be used as a wearable monitoring device in the future.

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Development of Wireless and Passive SAW Temperature Sensor with Very High Accuracy

Cited by 11 publications

References 29 publications

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Trends and Applications of Surface and Bulk Acoustic Wave Devices: A Review

Rational Design of a Surface Acoustic Wave Device for Wearable Body Temperature Monitoring

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