Wireless passive pressure sensor using frequency coded SAW structures

Chernenko, Denys; Zhovnir, Mykola Fedorovych; Tsyganok, B.; Oliinyk, Ostap

doi:10.1109/isse.2012.6273174

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Первинні перетворювачі на ПАХ також впрова-джуються у радіовимірювальні системи, які містять пристрій опитування і обробки інформації та дистан-ційно віддалені пасивні перетворювачі на ПАХ і застосовуються для контролю параметрів рухомих об'єктів та радіомоніторингу оточуючого середо-вища [12][13][14][15][16].…”

Section: Iunclassified

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Measuring transducer of angular displacements using phase raids of the surface acoustic waves electric field

Zhovnir¹

2017

Mìkrosist. elektron. akust.

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Section: Iunclassified

“…• фазової швидкості ПАХ при переміщенні механічного зонда (мембрани) в електричному полі хвилі [8,9,16];…”

Section: аналіз літературних даних і постановкаunclassified

Measuring transducer of angular displacements using phase raids of the surface acoustic waves electric field

Zhovnir¹

2017

Mìkrosist. elektron. akust.

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“…The principles for separating the transmitted and received signals include time-domain division (TDD), frequency-domain division (FDD) [27]. However, the number of signal processing channels of a sensor using the TDD principle is limited by the physical size of the sensor, and the number of channels using the FDD principle is limited by the IDT bandwidth of the sensor, so they are not suitable for large-scale wireless sensor networks.…”

Section: Introductionmentioning

confidence: 99%

An Impedance-Loaded Orthogonal Frequency-Coded SAW Sensor for Passive Wireless Sensor Networks

Dai

Fang

Zhang

et al. 2020

Sensors

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A passive wireless impedance-loaded orthogonal frequency-coded (OFC) surface acoustic wave (SAW) sensor for wireless sensor networks was proposed in this paper. One of the chips on OFC SAW tag is connected to an external sensor, which could cause a phase shift in the time response of the corresponding part on the SAW device. The phase shift corresponds to the sensed quantity, which could be temperature, strain, vibration, pressure, etc. The OFC SAW tag is isolated by a proper package from the direct effect of the measurand on the device’s response which could avoid the multiple measurands coupling. The simultaneous work of multiple sensors is guaranteed by orthogonal frequency coding. By processing the response based on an extended matched filter algorithm, sensing information of the specific coded OFC device can be extracted from the superimposed response of multiple independent encoded sensors. Compared to previous methods, the proposed method can produce a more flexible passive (battery-free) wireless sensor suitable for large-scale wireless sensor networks. Simulation and experimental results demonstrate the effectiveness of the sensor.

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“…However, the speed of sound depends on the environment, geometry, and temperature, which usually vary in other harsh environmental conditions. Therefore, SAW sensors have limited applications [9]- [11]. Wireless passive sensors based on the LC resonance principle have many advantages such as simple structure and ease of implementation and detection.…”

mentioning

confidence: 99%

An Embedded Passive Resonant Sensor Using Frequency Diversity Technology for High-Temperature Wireless Measurement

Tan

Zhang

et al. 2015

IEEE Sensors J.

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This paper presents an embedded wireless passive temperature sensor for measurements in high-temperature applications, such as compressors and turbine engines. The performance of the sensor was improved by optimizing its performance parameters. A high-temperature-resistant material was used, and an embedded structure design was introduced to enable the sensor to operate in high-temperature environments. A series LC resonant circuit containing a fixed inductance coil and variable capacitance that varies with temperature was embedded in an alumina ceramic substrate using high-temperature cofired ceramic technology. The temperature in the high-temperature environment was detected wirelessly via the frequency diversity of the sensor. Furthermore, the experimental results showed that the sensor can measure temperatures ranging from room temperature to 1000°C, and the average sensitivity of the sensor is ∼2 KHz/°C. Index Terms-Wireless measurement, embedded LC resonant sensor, HTCC technology, passive temperature sensor.

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Wireless passive pressure sensor using frequency coded SAW structures

Cited by 4 publications

References 3 publications

Measuring transducer of angular displacements using phase raids of the surface acoustic waves electric field

Measuring transducer of angular displacements using phase raids of the surface acoustic waves electric field

An Impedance-Loaded Orthogonal Frequency-Coded SAW Sensor for Passive Wireless Sensor Networks

An Embedded Passive Resonant Sensor Using Frequency Diversity Technology for High-Temperature Wireless Measurement

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