A High-Resolution Interface Circuit based on Resistance-to-Frequency Conversion for Resistive Gas Sensor

Qi, Weijie; Li, Chunling; Wang, Jing; Gu, Wenxian; Chen, Dongliang; Adedokun, George; Xu, Lei

doi:10.1109/imcec51613.2021.9482052

Cited by 4 publications

References 16 publications

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A new shadow resistance to frequency converter as a read‐out circuit for resistive sensors

Al‐Absi

2024

Circuit Theory & Apps

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SummaryThis paper presents a new resistance to frequency converter. The design is based on a shadow signal generator that produces square and triangular waveforms. The oscillator frequency can be changed using an external circuit (shadow oscillator). This method will make the conversion speed better than the conventional oscillators, and the frequency varies linearly with the resistance variation. The circuit is built using widely available commercial integrated circuits, and powered from a ±5‐V DC supply. The recommended setup is suitable for instrumentation where the oscillation frequency is directly proportional to the variation in the resistance of the sensor. The functionality of the proposed design was confirmed by experimentation and simulation. The oscillation's frequency can be changed to be nearly 10 times greater than its starting value, according to the results.

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A new shadow resistance to frequency converter as a read‐out circuit for resistive sensors

Al‐Absi

2024

Circuit Theory & Apps

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A novel compact and shadow resistance‐to‐frequency and resistance‐to‐time converter

Al‐Absi,

Alkhulaifi

2024

Circuit Theory & Apps

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This paper presents a novel compact and shadow resistance‐to‐frequency converter and resistance‐to‐time converter. The design incorporates three current feedback operational amplifiers (CFOA) and can be implemented in CMOS technology. The design's functionality has been proven through simulation and experimental verification. The simulation and experimental findings show that the proposed design works well with small deviation between simulation and experimental results.

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A High Dynamic-Range Readout Circuit with Differential Resistance-to-Time Conversion for Gas Sensor

Lee,

Tsai

2023

2023 21st IEEE Interregional NEWCAS Conference (NEWCAS)

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A High-Resolution Interface Circuit based on Resistance-to-Frequency Conversion for Resistive Gas Sensor

Cited by 4 publications

References 16 publications

A new shadow resistance to frequency converter as a read‐out circuit for resistive sensors

A new shadow resistance to frequency converter as a read‐out circuit for resistive sensors

A novel compact and shadow resistance‐to‐frequency and resistance‐to‐time converter

A High Dynamic-Range Readout Circuit with Differential Resistance-to-Time Conversion for Gas Sensor

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