Event-based cameras, also called dynamic vision sensors (DVS), inspired by the human vision system, are gaining popularity due to their potential energy-saving since they generate asynchronous events only from the pixels changes in the field of view. Unfortunately, in most current uses, data acquisition, processing, and streaming of data from event-based cameras are performed by power-hungry hardware, mainly high-power FPGAs. For this reason, the overall power consumption of an event-based system that includes digital capture and streaming of events, is in the order of hundreds of milliwatts or even watts, reducing significantly usability in real-life low-power applications such as wearable devices. This work presents FlyDVS, the first event-driven wireless ultra-low-power visual sensor node that includes a low-power Lattice FPGA and, a Bluetooth wireless system-on-chip, and hosts a commercial ultra-low-power DVS camera module. Experimental results show that the low-power FPGA can reach up to 874 efps (event-frames per second) with only 17.6mW of power, and the sensor node consumes an overall power of 35.5 mW (including wireless streaming) at 200 efps. We demonstrate FlyDVS in a real-life scenario, namely, to acquire event frames of a gesture recognition data set.

FlyDVS: An Event-Driven Wireless Ultra-Low Power Visual Sensor Node / Di Mauro A.; Scherer M.; Mas J.F.; Bougenot B.; Magno M.; Benini L.. - ELETTRONICO. - 2021-:(2021), pp. 9474260.1851-9474260.1854. (Intervento presentato al convegno 2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021 tenutosi a Grenoble, France nel 2021) [10.23919/DATE51398.2021.9474260].

FlyDVS: An Event-Driven Wireless Ultra-Low Power Visual Sensor Node

Scherer M.;Benini L.
2021

Abstract

Event-based cameras, also called dynamic vision sensors (DVS), inspired by the human vision system, are gaining popularity due to their potential energy-saving since they generate asynchronous events only from the pixels changes in the field of view. Unfortunately, in most current uses, data acquisition, processing, and streaming of data from event-based cameras are performed by power-hungry hardware, mainly high-power FPGAs. For this reason, the overall power consumption of an event-based system that includes digital capture and streaming of events, is in the order of hundreds of milliwatts or even watts, reducing significantly usability in real-life low-power applications such as wearable devices. This work presents FlyDVS, the first event-driven wireless ultra-low-power visual sensor node that includes a low-power Lattice FPGA and, a Bluetooth wireless system-on-chip, and hosts a commercial ultra-low-power DVS camera module. Experimental results show that the low-power FPGA can reach up to 874 efps (event-frames per second) with only 17.6mW of power, and the sensor node consumes an overall power of 35.5 mW (including wireless streaming) at 200 efps. We demonstrate FlyDVS in a real-life scenario, namely, to acquire event frames of a gesture recognition data set.
2021
Proceedings -Design, Automation and Test in Europe, DATE
1851
1854
FlyDVS: An Event-Driven Wireless Ultra-Low Power Visual Sensor Node / Di Mauro A.; Scherer M.; Mas J.F.; Bougenot B.; Magno M.; Benini L.. - ELETTRONICO. - 2021-:(2021), pp. 9474260.1851-9474260.1854. (Intervento presentato al convegno 2021 Design, Automation and Test in Europe Conference and Exhibition, DATE 2021 tenutosi a Grenoble, France nel 2021) [10.23919/DATE51398.2021.9474260].
Di Mauro A.; Scherer M.; Mas J.F.; Bougenot B.; Magno M.; Benini L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/870417
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