HOST - tik-old.ee.ethz.chFelix Sutton, Reto Da Forno, David Gschwend, Roman Lim, Tonio Gsell, Jan...
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A Heterogeneous System Architecture for Event-triggered Wireless Sensing X-Sense2 RTD 2013 Felix Sutton, Reto Da Forno, David Gschwend, Roman Lim, Tonio Gsell, Jan Beutel, and Lothar Thiele Computer Engineering and Networks Laboratory, ETH Zurich, Switzerland > Motivation > Heterogeneous Protocol and Platform Design Preliminary Power Dissipation: Acoustic Sensor Interface: • Ultra-low power analog circuit to facilitate sensor- initiated wake-up using a piezoelectric transducer. • Wake-up application processor and start event characterization when acoustic signal greater than V TH . Component During Periods of Inactivity Acoustic Sensor Interface 6.3 µW Zippy as a Sensor 9.6 µW Acoustic Event Characterization 2.5 µW BOLT Processor Interconnect 1.3 µW Event-based Low-power Wireless Bus 5.5 µW Total 25.2 µW +20dB - + V TH Processor Wake-up Threshold Selection Voltage Regulator ADC Input Latch Voltage Regulator Latch Reset 2 3 4 5 6 Signal Conditioning Event Detection BPF Signal Acquisition & Feature Extraction Processor 1 Dual-Processor Platform BOLT Application Processor TI MSP432P401R ARMCortex M4F Acoustic Event Characterization Event-based Low-power Wireless Bus Communication Processor TI CC430F5147 16-bit SoC Acoustic Sensor Interface Zippy Heterogeneous Protocol Design: • Asynchronous protocol (Zippy) for rapid and on-demand network wake-up. “Zippy as a Sensor” to enable rapid acoustic event characterization. • Synchronous protocol (eLWB) for robust multi-hop dissemination. Low-power Wireless Bus tailored for rapid event-based dissemination. Heterogeneous Platform Design: • Application and communication tasks onto dedicated processors. • Mitigate resource interference using the BOLT processor interconnect. A C B EVENT Sensor APP Acoustic Event Characterization eLWB Zippy Flood Zippy Zippy Flood Zippy APP eLWB Zippy Flood Zippy Acoustic Event Characterization S E S S E S S D A D C S D A D C S D A D A D C D A D A D C S D A D A D C D A D A D C Wireless Acoustic Sensing with High Spatial Resolution • Detection and characterization of an acoustic event with high spatial resolution. • Examples: intruder detection, structural monitoring, sniper localization, etc. Challenges: • Acoustic Sensor Interface support low-power event detection and acquisition • Rapid Network Wake-up energy-efficient network wake-up upon event arrival • Adaptive Data Dissemination dynamic data-rate adaption throughout network • Resource Interference conflict between resource-intensive and time-critical tasks Our Solution: • System architecture consisting of a heterogeneous protocol and platform. HOST Asynchronous Protocol (e.g. Zippy) Synchronous Protocol (e.g. eLWB) Zippy Sensor + Zippy + eLWB EVENT
Transcript of HOST - tik-old.ee.ethz.chFelix Sutton, Reto Da Forno, David Gschwend, Roman Lim, Tonio Gsell, Jan...
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A Heterogeneous System Architecture forEvent-triggered Wireless Sensing
X-Sense2 RTD 2013
Felix Sutton, Reto Da Forno, David Gschwend, Roman Lim, Tonio Gsell, Jan Beutel, and Lothar ThieleComputer Engineering and Networks Laboratory, ETH Zurich, Switzerland
> Motivation
> Heterogeneous Protocol and Platform Design
Preliminary Power Dissipation:
Acoustic Sensor Interface: • Ultra-low power analog circuit to facilitate sensor-initiated wake-up using a piezoelectric transducer.• Wake-up application processor and start event characterization when acoustic signal greater than VTH.
Component During Periods of InactivityAcoustic Sensor Interface 6.3 µW
Zippy as a Sensor 9.6 µWAcoustic Event Characterization 2.5 µW
BOLT Processor Interconnect 1.3 µWEvent-based Low-power Wireless Bus 5.5 µW
Total 25.2 µW
+20dB
-+
VTH
Processor Wake-up
Threshold Selection
Voltage Regulator
ADCInput
Latch
Voltage Regulator
Latch Reset
23
4
5
6
Signal Conditioning
Event Detection
BPF
Signal Acquisition & Feature Extraction
Processor
1
Dual-Processor Platform
BOLTApplication Processor
TI MSP432P401RARMCortex M4F
Acoustic Event Characterization
Event-based Low-power
Wireless Bus
Communication Processor
TI CC430F514716-bit SoC
AcousticSensor Interface
Zippy
Heterogeneous Protocol Design: • Asynchronous protocol (Zippy) for rapid and on-demand network wake-up. “Zippy as a Sensor” to enable rapid acoustic event characterization.
• Synchronous protocol (eLWB) for robust multi-hop dissemination. Low-power Wireless Bus tailored for rapid event-based dissemination.
Heterogeneous Platform Design: • Application and communication tasks onto dedicated processors.• Mitigate resource interference using the BOLT processor interconnect.
A
C
B
EVENT
Sensor
APP Acoustic Event Characterization
eLWB
Zippy FloodZippy
Zippy FloodZippy
APP
eLWB
Zippy FloodZippy
Acoustic Event Characterization
S E S
S E S
S DA
DC
S DA
DC
S DA
DA
DC
DA
DA
DC
S DA
DA
DC
DA
DA
DC
Wireless Acoustic Sensing with High Spatial Resolution• Detection and characterization of an acoustic event with high spatial resolution.• Examples: intruder detection, structural monitoring, sniper localization, etc.
Challenges:• Acoustic Sensor Interface support low-power event detection and acquisition • Rapid Network Wake-up energy-efficient network wake-up upon event arrival• Adaptive Data Dissemination dynamic data-rate adaption throughout network• Resource Interference conflict between resource-intensive and time-critical tasks
Our Solution:• System architecture consisting of a heterogeneous protocol and platform.
HOST
Asynchronous Protocol (e.g. Zippy)
Synchronous Protocol (e.g. eLWB)
Zippy
Sensor + Zippy + eLWB
EVENT
Slide Number 1
