Naslov
Piezoelectric sensor front-end for energy- efficient acquisition of ultrasonic emissions related to water-stress in plants

Autori
Oletić, Dinko ; Bilas, Vedran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
2019 IEEE SENSORS Proceedings / - : Institute of Electrical and Electronics Engineers (IEEE), 2019

ISBN
978-1-7281-1634-1

Skup
IEEE Sensors 2019

Mjesto i datum
Montréal, Kanada, 27.10.2019. - 30.10.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
piezoelectric sensors ; signal conditioning ; low power design ; ultrasonic acoustic emissions ; water stress ; xylem embolism ; precision agriculture

Sažetak
Formation of embolisms in plant’s xylem water transport vessels is considered a major cause of plant mortality due to water-stress. Passive ultrasonic acoustic emissions (AE) monitoring shows the most potential for field- quantification of embolism level. However, this requires designing energy-efficient embedded hardware for autonomous high-speed ultrasonic AE acquisition, processing, and storage. In this paper we present a piezoelectric sensor interface for triggered AE acquisition at 2 MS/s. Its design requirements were assessed by laboratory dehydration experiments on grapevine pot-plants. An embedded prototype was design and characterized. The proposed architecture enables event-based acquisition of AE within 120-550 kHz band, at 5.7 mW average power, and 717 ns wakeup-latency.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

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