power consumption measurement and clock synchronization on low-power wireless sensor networks author...
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![Page 1: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/1.jpg)
Power Consumption Power Consumption Measurement and Clock Measurement and Clock Synchronization onSynchronization onLow-Power Wireless Sensor Low-Power Wireless Sensor NetworksNetworks
Author : Yu-Ping Chen, Quincy Wu
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![Page 2: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/2.jpg)
IntroductionIntroductionApplications of Wireless Sensor
Networks
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![Page 3: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/3.jpg)
Introduction cont.Introduction cont.Low-Power WiFi system architecture
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![Page 4: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/4.jpg)
Introduction cont.Introduction cont.Digital oscilloscope connection diagram.
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![Page 5: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/5.jpg)
Power Consumption Power Consumption MeasurementMeasurementLow-Power WiFi
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--The electric current of beaconing status when the WiFi signaling strength is -32 dBm.
--The electric current of beaconing status when the WiFi signaling strength is -79 dBm.
![Page 6: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/6.jpg)
Power Consumption Power Consumption Measurement cont.Measurement cont.
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The start- up status of Low-Power WiFi.
The start- up status of ZigBee.
![Page 7: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/7.jpg)
Power Consumption Power Consumption Measurement cont.Measurement cont.
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The stand-by status of ZigBee.
![Page 8: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/8.jpg)
Power Consumption Power Consumption Measurement cont.Measurement cont.Average power consumption statistics.
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Power State ZigBee Low-Power WiFi
Signaling strength
-32 dBm -79 dBm
Start-up 0.0448 W 0.0396 W
Beaconing 0.0957 W 0.2145 W
Stand-by 0.0756 W 0.0495 W
![Page 9: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/9.jpg)
Clock SynchronizationClock Synchronization
Clock synchronization of Low-Power WiFi devices by NTP.
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![Page 10: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/10.jpg)
Clock Synchronization Clock Synchronization cont.cont.Clock synchronization flow chart with NTP.
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![Page 11: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/11.jpg)
Conclusion and Future Conclusion and Future workworkCompared with traditional WiFi
equipment, the power consumption of Low-Power WiFi is reduced approximate 40%.
The power consumption of Low-Power WiFi with start-up and stand-by status is lower than ZigBee.
The power consumption of Low-Power WiFi device when it is receiving beacons from an AP, is twice of the power consumption at its stand-by status.
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![Page 12: Power Consumption Measurement and Clock Synchronization on Low-Power Wireless Sensor Networks Author : Yu-Ping Chen, Quincy Wu 1](https://reader035.vdocument.in/reader035/viewer/2022062421/56649da85503460f94a949a1/html5/thumbnails/12.jpg)
Conclusion and Future Work Conclusion and Future Work cont.cont.The clock synchronization usually
suffers from long latency problems in wireless sensor networks like ZigBee.
We combines Low-power WiFi devices with NTP, it would be crucial to further investigate the efficiency and accuracy of NTP packet transmission.
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