IotCeption - Energy Measurement of Android Things on Raspberry PI 3 with Arduino Uno

May 24, 2017Download as PPTX, PDF0 likes457 views

This document discusses measuring the energy consumption of an AndroidThings application running on a Raspberry Pi. An Arduino with an INA219 shunt is used to measure the power drawn by the Raspberry Pi running an AndroidThings app that sends weather data via SMS. The results showed the app running for 8 hours idle, 2 hours while sending SMS messages, and 20 minutes to send 10,000 SMS messages. Examining the Android system UI process revealed it used 3 times as much energy as other processes due to software events. Improving how events are handled could increase battery life by 42 minutes. The document concludes that IoT energy consumption will increase due to managed data transfer and that efficient IoT design is important for environmental and

IOTception
Energy measurement of AndroidThings on Raspberry Pi with Arduino
CTO, Greenspector
@SimplyGreenIT
Olivier PHILIPPOT

Olivier Philippot
CTO, Greenspector
#Eco-design #greenIT #Energy for software

Why do you need to
measure energy ?
Sofware is eating the
world
… and it needs energy!

Transporting bits now
uses 50% more
energy than world
aviation, and will
likely use twice as
much by 2030.
Mark P. Mills - CEO, Digital Power Group - www.tech-pundit.com

IotCeption - Energy Measurement of Android Things on Raspberry PI 3 with Arduino Uno

IoT classical architecture
Server
Gateway
Smartphone
Things

Use case : Send weather information by SMS
Raspberry PI
OS : AndroidThings
(make the Apps
meetThings !)
SMS Service :
CiscoTropoPimoroni
Rainbow Hat
Weather
Station

The measurement infrastructure
Arduino
Shunt
Raspberry
USB Power
For Raspberry
Arduino to PC
For data
Network

The code : Sending SMS from IoT withTropo

The result on 10 000 mAh battery
-8 hours
-2 hours
-20 mn

Event in System UI
Software
events
Hardware
events
Android events management
Algorithms
Graphics

Improvement
• 1 event managed every 20 events
+ 42 mn

Premature Optimization ?
“There is no doubt that the grail of
efficiency leads to abuse. Programmers
waste enormous amounts of time thinking
about, or worrying about, the speed of
noncritical parts of their programs [...]We
should forget about small efficiencies, say
about 97% of the time: premature
optimization is the root of all evil.Yet we
should not pass up our opportunities in
that critical 3%. ”
• Donald Knuth - 1974

Conclusion
• IoT energy consumption will bloat not because of
code but due to managed data!
• An autonomous IoT is not so simple
• Measure, Measure and Measure
• Efficient IoT (and cloud) is good for earth and for
users!

Keep in touch
@simplygreenit
https://greenspector.com/en

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IotCeption - Energy Measurement of Android Things on Raspberry PI 3 with Arduino Uno

1. IOTception Energy measurement of AndroidThings on Raspberry Pi with Arduino CTO, Greenspector @SimplyGreenIT Olivier PHILIPPOT

2. Olivier Philippot CTO, Greenspector #Eco-design #greenIT #Energy for software

3. Why do you need to measure energy ? Sofware is eating the world … and it needs energy!

4. Transporting bits now uses 50% more energy than world aviation, and will likely use twice as much by 2030. Mark P. Mills - CEO, Digital Power Group - www.tech-pundit.com

6. How they measure energy ? Before Now

7. How we measure energy ? We don’t.

8. Not so true…

9. Measurement in Android

10. IoT classical architecture Server Gateway Smartphone Things

11. Use case : Send weather information by SMS Raspberry PI OS : AndroidThings (make the Apps meetThings !) SMS Service : CiscoTropoPimoroni Rainbow Hat Weather Station

12. Under test : AndroidThings on Raspberry

13. Arduino to manage measurement

14. Arduino + INA219 Shunt to measure

15. The measurement infrastructure Arduino Shunt Raspberry USB Power For Raspberry Arduino to PC For data Network

16. Arduino + INA219 Shunt to measure

17. The code : Sending SMS from IoT withTropo

18. Energy Idle SMS

19. The result on 10 000 mAh battery -8 hours -2 hours -20 mn

20. Is it the Hardware or Software’s fault?

21. Google Android System UI

22. Energy x3

23. Event in System UI Software events Hardware events Android events management Algorithms Graphics

24. Events are like butterfly effect

25. Improvement • 1 event managed every 20 events + 42 mn

26. Premature Optimization ? “There is no doubt that the grail of efficiency leads to abuse. Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs [...]We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.Yet we should not pass up our opportunities in that critical 3%. ” • Donald Knuth - 1974

27. Conclusion • IoT energy consumption will bloat not because of code but due to managed data! • An autonomous IoT is not so simple • Measure, Measure and Measure • Efficient IoT (and cloud) is good for earth and for users!

28. Keep in touch @simplygreenit https://greenspector.com/en

Editor's Notes

#3: I’m Olivier Philippot and I’m CTO of Greenspector. You can easily hear that I’m not american but a little frenchy. And I’m really happy to be here ! What do I do ? Providing energy knowledge and efficiency for developers. That is why I created greenspector a tool suite for energy measurement and green IT !
#4: Sofware is eating the world and it needs energy !
#6: Mobility is everywhere. And there is a real impact on the autonomy, which we can see when we need to plug our smartphone every night. With IoT, it would be the same : try and change the battery on your hundred devices every year and your wallet will feel it ![Léa] Si c’est une question type «��pourquoi devez vous mesurer l’énergie��?��» = Why do you need to measure energy?MAIS si c’est plutôt affirmatif type «��Pour vous devez mesurer l’énergie��» = Why you need to measure energy(concept applicable pour les 2 prochaines slides aussi)
#10: circuit
#12: [Léa] Pour SMS j’utiliserai «��text��» dans le langage quotidien – après je ne sais pas l’usage du mot «��technique��»
#17: Costly .
#19: [Léa] Pour SMS j’utiliserai «��text��» dans le langage quotidien – après je ne sais pas l’usage du mot «��technique��»
#20: 8h alphanumeric displays
#24: Hardware
#26: 40mn
#28: Solicitate ?
#30: Les Américains aiment finir par un « Thank you for listenning��» avec un grand sourire à la fin + ajouter tes contact details (nom/email/@) à la fin pour ceux qui ont rejoint en cours de conf

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