Telemetric Technique for Passive Resistive Sensors Based on Impedance Real Part Measurement at Fixed Frequency

Bona, Michele; Borghetti, Michela; Sardini, Emilio; Serpelloni, Mauro

doi:10.1109/tim.2018.2811279

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…In present-day a wide diversity of resistive sensors such as piezo-resistive [42,43], magneto-resistive sensors [44,45] or resistive gas sensors [46][47][48], to mention a few, can be found in different and versatile applications. Those sensors can be characterized by a simple resistive model replicating their behavior in a simple manner [49][50][51]. Thus, to demonstrate the functionality of the proposed single-phase LIA a resistive divider circuit was implemented in the laboratory with temperature and light controlled conditions to eliminate any variation due to these parameters, focusing only in the detection of resistive variations.…”

Section: B Resistive Sensor Measurementsmentioning

confidence: 99%

“…A decoupling capacitor Cdec followed by an analog adder was used to set the required DC level (Vdd/2) at the LIA's input. The response was measured with 6 ½ digit digital multimeters, without LIA (Vo_divider) and with LIA (Vout_DC rename as Vodc_LIA), for minimum and maximum gain, varying the resistance from 100 Ω to 10 kΩ, typical from piezo-resistive sensors [41,42] and other resistive sensors [48][49][50].…”

Section: B Resistive Sensor Measurementsmentioning

confidence: 99%

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Ultralow-Power Synchronous Demodulation for Low-Level Sensor Signal Detection

Maya-Hernandez

Calvo-López²,

Sanz-Pascual

2019

IEEE Trans. Instrum. Meas.

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The design and experimental characterization of a high-resolution analog lock-in amplifier (LIA)-based measurement system is presented in this paper. Different design strategies are used to attain a versatile solution which features programmable gain (72.6 -82.6 dB) and operating frequency (5 -115 kHz), preserving good recovery performance. The prototype, integrated in the UMC 0.18 µm CMOS process with a single supply voltage of 1.8 V, achieves a resolution of 200 nV and a high dynamic reserve of 43.5 dB, showing significantly lower power consumption (885 µW) than high-resolution state-of-the-art LIAs with minimum size (0.075 mm 2 silicon area). To validate the amplitude recovery performance of the proposed single-phase LIA, it was used to measure the equivalent value of a passive resistive sensor, exhibiting a maximum error of 1.9 % when RS is varied from 100 Ω to 10 kΩ with an input signal in the order of hundreds of microvolts. Thus, it constitutes a highly suitable choice for portable and lab-on-a-chip sensing applications.

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Section: B Resistive Sensor Measurementsmentioning

confidence: 99%

Section: B Resistive Sensor Measurementsmentioning

confidence: 99%

Ultralow-Power Synchronous Demodulation for Low-Level Sensor Signal Detection

Maya-Hernandez

Calvo-López²,

Sanz-Pascual

2019

IEEE Trans. Instrum. Meas.

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“…The smart object measures the changes in a specific physical quantity and the readout unit acquires these measurements and performs other tasks like the active smart object. This particular telemetric system uses passive wireless communication, exploiting an electric-magnetic [41], optic or acoustic link [42]. For example, in [41], the resistance of a temperature sensor was read by using two inductors, one connected to the sensor and the other to the readout unit.…”

mentioning

confidence: 99%

“…This particular telemetric system uses passive wireless communication, exploiting an electric-magnetic [41], optic or acoustic link [42]. For example, in [41], the resistance of a temperature sensor was read by using two inductors, one connected to the sensor and the other to the readout unit. The resistance change of the temperature sensor induces a change in the impedance of the inductor of the readout unit.…”

mentioning

confidence: 99%

“…This type of telemetric system does not require any battery or power supply for the passive smart object, which can be placed easily inside a harsh or hermetic environment, but the distance between the two inductors has to be lower than a few centimeters. A telemetric system was successfully adopted for monitoring hermetic or inaccessible environments, such as furnaces [43] or pipes of the heating plant [41]. In the case of the telemetric device, the readout unit also acts as a bridge between the passive device and the factory network.…”

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confidence: 99%

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Future Sensors for Smart Objects by Printing Technologies in Industry 4.0 Scenario

et al. 2020

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Industry 4.0 has radically been transforming the production processes and systems with the adoption of enabling technologies, such as Internet of things (IoT), big data, additive manufacturing (AM), and cloud computing. In this context, sensors are essential to extract information about production, spare parts, equipment health, and environmental conditions necessary for improving many aspects of industrial processes (flexibility, efficiency, costs, etc.). Sensors should be placed everywhere (on machines, smart devices, objects, and tools) inside the factory to monitor in real-time physical quantities such as temperature, vibrations, deformations that could affect the production. Printed electronics (PE) offers techniques to produce unconventional sensor and systems or to make conventional objects “smart”. This work aims to analyze innovative PE technologies—inkjet printing and aerosol jet printing in combination with photonic curing—as manufacturing technologies for electronics and sensors to be integrated into objects, showing a series of sensors fabricated by PE as applications that will be adopted for smart objects and Industry 4.0.

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