A Wireless LC Sensor Coated with Ba0.9Bi0.066TiO3 for Measuring Temperature

Radovanović, Milan; Mojic-Lante, Bojana; Cvejin, Katarina; Srdić, Vladimir V.; Stojanović, Goran

doi:10.3390/s150511454

Cited by 12 publications

(8 citation statements)

References 12 publications

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“…Figure 11 a shows the fitting curve of resonant frequency versus temperature for the entire test temperature range (−40 °C to 125 °C). The determination coefficient (

) in the fitting curve illustrates that the curve has a good linearity and the experimental data have high reliability compared with the others sensors based on the principle of microwave transmission and LC resonant sensors [ 13 , 41 , 42 , 43 ]. To ensure the accuracy of experimental results and verify the repeatability of the sensor, the sensor was tested for three times while maintaining the same test environment.…”

Section: Testing and Discussionmentioning

confidence: 92%

“…Francois et al successfully used SAW to measure temperatures of above 500 °C [ 12 ]. An LC temperature sensor consisting of a spiral inductor and an interdigitated capacitor, connected in parallel, was fabricated by Milan et al [ 13 ]. The LC sensor proposed by Ren et al can measure the temperature and humidity of the environment simultaneously [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Low-Cost Wireless Temperature Measurement: Design, Manufacture, and Testing of a PCB-Based Wireless Passive Temperature Sensor

Yan

Yang

Hong

et al. 2018

Sensors

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Low-cost wireless temperature measurement has significant value in the food industry, logistics, agriculture, portable medical equipment, intelligent wireless health monitoring, and many areas in everyday life. A wireless passive temperature sensor based on PCB (Printed Circuit Board) materials is reported in this paper. The advantages of the sensor include simple mechanical structure, convenient processing, low-cost, and easiness in integration. The temperature-sensitive structure of the sensor is a dielectric-loaded resonant cavity, consisting of the PCB substrate. The sensitive structure also integrates a patch antenna for the transmission of temperature signals. The temperature sensing mechanism of the sensor is the dielectric constant of the PCB substrate changes with temperature, which causes the resonant frequency variation of the resonator. Then the temperature can be measured by detecting the changes in the sensor’s working frequency. The PCB-based wireless passive temperature sensor prototype is prepared through theoretical design, parameter analysis, software simulation, and experimental testing. The high- and low-temperature sensing performance of the sensor is tested, respectively. The resonant frequency decreases from 2.434 GHz to 2.379 GHz as the temperature increases from −40 °C to 125 °C. The fitting curve proves that the experimental data have good linearity. Three repetitive tests proved that the sensor possess well repeatability. The average sensitivity is 347.45 KHz/°C℃ from repetitive measurements conducted three times. This study demonstrates the feasibility of the PCB-based wireless passive sensor, which provides a low-cost temperature sensing solution for everyday life, modern agriculture, thriving intelligent health devices, and so on, and also enriches PCB product lines and applications.

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“…Figure 11 a shows the fitting curve of resonant frequency versus temperature for the entire test temperature range (−40 °C to 125 °C). The determination coefficient (

Section: Testing and Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Low-Cost Wireless Temperature Measurement: Design, Manufacture, and Testing of a PCB-Based Wireless Passive Temperature Sensor

Yan

Yang

Hong

et al. 2018

Sensors

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“…The use of an inductor-capacitor (LC) resonant tank circuit in which the capacitance or the inductance is designed to vary with temperature is an advantageous approach to wireless temperature sensing given its reliable frequency-based reading and no requirement for packaging internal power sources [1][2][3]. Wireless temperature sensing based on this architecture has been reported through different approaches.…”

Section: Introductionmentioning

confidence: 99%

Flex‐circuit resonant chip with Y5V multilayer capacitor for wireless temperature tracking

Patel

Selvaraj

Takahata

2022

Electronics Letters

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This paper reports the first wireless thermometric device enabled using a surface-mount capacitor microchip as the sensing element, offering a low-cost, disposable, and flexible sensor potentially suitable for a wide range of application areas. The device is developed in the form of a resonant-circuit chip, in which a Y5V-type multilayer capacitor microchip that exhibits significant temperature dependence serves as a thermoresponsive element that varies the resonant frequency of the circuit upon a temperature change. The wireless sensor chips prototyped in conjunction with the flex-circuit technology are tested to show their intended function with the frequency responses of up to 129 kHz/°C for ambient temperature variations. Wireless temperature tracking of a fluid-flowing channel is experimentally demonstrated using the prototype.Development Fund. K. Takahata was supported by the Canada Research Chairs program.

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“…For example, for the parameter measurement of high-speed rotating parts, when the sensor is installed on the surface of the high-speed rotating part, the electrical lead will move with the rotating device, which will lead to breakage and failure of the test. Thus, the wireless passive LC resonant sensor, which does not rely on interconnection lines to transmit signals and an external power supply to provide energy, and has a simple structure and convenient reading, has attracted wide attention at home and abroad [9][10][11][12][13][14][15][16][17]22]. In recent years, acceleration measurement based on this principle has gradually arisen.…”

Section: Introductionmentioning

confidence: 99%

A Wireless Passive Vibration Sensor Based on High‐Temperature Ceramic for Harsh Environment

Xue

Jia³

et al. 2021

Journal of Sensors

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This paper proposes a wireless passive vibration sensor based on high-temperature ceramics for vibration measurement in harsh environments such as automotive and advanced engines. The sensor can be equivalent to an acceleration-sensitive RF LC resonance tank. The structural design of the LC tank and the signal wireless sensing mechanism are introduced in detail. The high-temperature mechanical properties of the sensitive structure are analyzed using ANSYS at 25–400°C, which proves the usability of the vibration sensor in high-temperature environment. The three-dimensional integrated manufacturing of vibration sensors with a beam-mass structure based on high-temperature ceramics is completed by a bonding process. Finally, the performance of the sensor is tested on a built experimental platform, and the results show that the vibration sensitivity is approximately 1.303 mv/m·s-2, and the nonlinear error is approximately 4.3%. The vibration sensor can work normally within 250°C, and the sensitivity is 0.989 mv/m·s-2.

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A Wireless LC Sensor Coated with Ba0.9Bi0.066TiO3 for Measuring Temperature

Cited by 12 publications

References 12 publications

Low-Cost Wireless Temperature Measurement: Design, Manufacture, and Testing of a PCB-Based Wireless Passive Temperature Sensor

Low-Cost Wireless Temperature Measurement: Design, Manufacture, and Testing of a PCB-Based Wireless Passive Temperature Sensor

Flex‐circuit resonant chip with Y5V multilayer capacitor for wireless temperature tracking

A Wireless Passive Vibration Sensor Based on High‐Temperature Ceramic for Harsh Environment

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