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Issue 7: GPS sensing wasted when accuracy is low
3 people starred this issue and may be notified of changes. Back to list
Status:  Started
Owner:  ----


 
Project Member Reported by yepang...@gmail.com, Jul 28, 2012
Dear friends,

I am postgraduate student in Hong Kong, doing research in mobile applications. I really like your project, as it is simple yet useful enough.

Recently, we are analyzing sensor data usage in Android applications using a research prototype. We found one interesting issue in your project.

If the GPS data is of low accuracy, then the sensed data will not be recorded into database. However, it is highly possible that GPS cannot provide accurate data in indoor area (especially in Hong Kong). So if users do not stop tracking when they are indoor, it is possible that much energy is spent, but the user only gets very limited data recorded in database. In some sense, much energy is wasted. I wonder whether there could be a better design. For example, when the app found that the data provided by GPS is not accurate for a long time (say 5 mins), then the app unregisters the location listener and starts a timer which can re-register the location listener after a period (say 40 mins). Of course, we should let users know that the tracking is temporarily stopped because the GPS data is noisy.

We hope in this way, this great little app can be more energy efficient. We look forward to hearing from you. Thank you!

Apr 12, 2013
Project Member #3 yepang...@gmail.com
Working on a more energy efficient version. Soon users can download it.
Status: Started
Apr 25, 2013
Project Member #4 yepang...@gmail.com
We made a patch. Field testing suggests that this patch helps save energy, although no very significant saving observed. We will release a new download after further testing.
energy.patch
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