A Programmable 3-Channel Acoustic Wake-Up Interface Enabling Always-On Detection of Underwater Events within 20 µA
| Autor: | Marko Gazivoda, Vedran Bilas, Dinko Oletic |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Hydrophone
business.industry Computer science Interface (computing) Electrical engineering lcsh:A acoustic event detection underwater surveillance Signal Power (physics) always-on sensor interface Underwater lcsh:General Works DSP wake-up low-power design business DSP Sensitivity (electronics) Digital signal processing Communication channel |
| Zdroj: | Proceedings, Vol 2, Iss 13, p 768 (2018) |
| ISSN: | 2504-3900 |
| Popis: | We present an always-on acoustic wake-up sensor interface, designed for prolonging the autonomy of energy-hungry hardware for underwater acoustic surveillance. Proposed design enables the detection of a passing ship by simultaneous listening up to three arbitrarily defined frequency-bands within the 2.5 kHz range, and generates a wake-up signal upon finding a match with a digitally preset template describing signal’s discriminatory time-frequency features. In this paper, we propose the architecture of such fully programmable, multichannel, mixed-signal wake- up circuit. We show the implementation of a PCB prototype, characterize its sensitivity, analyze its current consumption, and verify its response on real-world hydrophone recordings. It is demonstrated that the design consumes only 6.4 µA per channel (in total |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|