GGC Optimizing Configuration

GammaGuard Optimizing Configuration using a smoke-detector

Different phones behave differently and you can often improve performance by configuring the phone. We have 4 main configurations (Modes) with which to test your phone. ( mode 1 - mode 2 - mode 3 - mode 4). If the app isn't counting on a radiation source or counting too much without any radiation source, then finding optimized configuration may be necessary.

For switching to different modes, go to the setting page, and enter the small letter “m” following with one of the mode numbers. For example “m3” will go to the mode 3. Mode 4 is the phone default mode, so “m4” will restore all default parameters.

We have used a smoke detector to find the optimized mode for different phones.

Procedures and results of our test are listed below.

Procedure:

Run the GammaGuard app and start “measuring” on each phone for different modes once on a smoke detector (SD) and once on Background (BG) or away from any source.

Make sure the data log is enabled in setting page (your data will be logged out in your phone every 5 minutes (by default) for future readings)
After switching into each mode you need to calibrate the app again
For smoke detector radiation measurements you need to find the rough position of the source on the smoke detector case. (For more information about how to measure radiation events on a smoke detector look at our website :

( http://gammawatch.com/smokedetector.html )

Run each test for 5 hours ( it can be more than 5 hours depends on the phone sensitivity to background) except for HTC-One phone whome frame-rate is much lower than other phones then we run the HTC for 20 hours.
After each test read the total Counts and total frame either on the app or on the file in your phone memory. data will be saved in [ GammaGuard complete/dataLog-camera.csv ] in your phone directory

Conclusions :

We have done the test and plotted the graphs on different phones. these graphs show the difference of counts of a smoke detector radiation events (Blue lines) and background (Red lines). lower background and higher differences in counts on SD and BG are the two factor which indicating the optimized configurations. For example, (mode 4) is the optimized configuration for [Motorilla XT925], and (mode 3) is the optimized configuration for [Samsung NOTE 2], and (mode 1) is the optimized mode for [HTC One X+].

The Optimized mode is different in each phone. However, we can measure the difference in counts of SD and BG in all modes in most phones

Motorolla XT925 - (Model number : RAZR HD) - (Android version : 4.1.2)