About this app
A smartphone acceleration meter tracking application. It displays in text, acceleration readings, and also displays nominal derived velocities and displacements, including drift, and reports their maximum values.
It provides three statistical viewpoints, the raw readings (red) buttons, statistical moving averages (blue button), and an exponential weighting (green buttons). The color coding simply serves as a contextual cue.
It also provides 2-D projection plots of X,Y, and Z coordinate readings alongside their time series graphs.
Finally, it provides a dynamic X-Y plot with compensating cross-hair tracking of force actions. The third axis is also indicated with plot line thickness.
What may appear as random motion plot lines in hand-held gestures also includes muscle trigger normally thought of as smooth movement. The heart pulse also features with detection of blood pressure cycles and other muscle tremor.
This version of the app is a test prototype that can be deployed into specific medical diagnosis applications, physiotherapy apps and even into auto motion apps.
User instructions:
IMPORTANT: You start and stop the SensorStats app using the Android Exit and Stop app functions.
The main Sensor Stats activity panel displays active sensor raw readings.
The top row above acceleration meter readings and their span maximum values is their timing, which includes the reading event count, the event time, the session run time, and the speed (tick size) in milliseconds between readings.
The main Sensor Stats activity panel also sports eight buttons, seven with media icons and an eighth graphic 'phone on hand' icon.
The main panel comes up with active sensor motion sampling at your handset's normal UI speed, which you can find out from the tick-Size value.
Media Icons at the bottom of the screen control the sensor sample timing, and are used as follows:
'||': The Pause button stops the sampling
'<<': The Fast Rewind button resets the timing counts and restarts sampling at slowest speed
'>': The Play button restarts sampling from a prior Pause using the UI normal speed
'>>': The Fast Forward button restarts sampling from a prior Pause using the fastest handset speed
Media Icons at the top of the screen control the sensor reporting statistic, and are used as follows:
'|<': The Return button changes the active panel and takes you to the Previous statistic panel
'>|': The End button changes the active panel and takes you to the Next statistic panel
[Camera] Icon: Display sensor readings as a time series and static frame axis 2D projections of X-Y, Y-Z and Z-X coordinate axes in a panel named 'L-InterAct'.
[Handset] Icon: Display sensor readings in a panel named 'L-InterAct' with dynamic frame axes, showing a 2D X-Y projection with the plot line thickness depicting the relative Z-axis value. The frame origin tracks the sample window average and the axis range adjusts accordingly.
The plot line thickness relates to depth or height relative to the prevailing span of Z-axis readings in the plot window data.
In Interactive Mode, the Power Manager 'Idle Sleep Time' countdown is disabled to allow for long touch-free sessions.
The plot background is also turned to black to help conserve battery charge over the longer sessions.
To restore the countdown for 'sleep on idle', press the screen five times in rapid succession (all within two seconds)
If you pause and resume this application say with power button you must press the screen five times to restore idle shutdown or else it shall run indefinitely.
The battery-safe L-InterAct mode plots black on white background in the default 'sleep on idle' setting.
When you are done running L-InterAct use the smartphone main menu exit button to take it into background and further use the Android main panel menu button to select it from the background and stop it permanently to avoid its draining your battery power in the background.
