A 180 nm CMOS smart ultrasonic water flow meter circuit for IoT smart society

Abstract This paper proposes an ultrasonic water flow meter to be used as an internet of things smart meter. The proposed system is designed with a standard 180 nm CMOS technology. Time-zooming and self-calibration methods are also presented to achieve high accuracy and low power simultaneously. The...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2021-05, Vol.60 (SB), p.SBBL05
Main Authors: Kaga, Yuta, Johguchi, Koh
Format: Article
Language:English
Subjects:
Circuit design
CMOS
CMOS integrated circuit
Internet of Things
Self calibration
Ultrasonic
Water flow
Water flow meter
Zooming
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Summary:Abstract This paper proposes an ultrasonic water flow meter to be used as an internet of things smart meter. The proposed system is designed with a standard 180 nm CMOS technology. Time-zooming and self-calibration methods are also presented to achieve high accuracy and low power simultaneously. The measurement for the fabricated chip was carried out by using a custom-designed test board, and results verified that the system can perform correctly. Thanks to the proposed correction methods and designed circuit, the proposed smart water flow meter can feasibly be used as a next-generation smart meter.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/abe99b