nl.sense_os.cortex.TimeActiveSensor Class Reference

Inheritance diagram for nl.sense_os.cortex.TimeActiveSensor:

Public Member Functions
	TimeActiveSensor (String name, SensePlatform sensePlatform)
	TimeActiveSensor (SensePlatform sensePlatform)
void	resetTime ()
void	setPeriodicReset (Calendar resetDate, long periodMillis)
void	clearPeriodicReset ()
void	testingSetTime (long seconds)
void	addSeconds (double seconds)

Static Public Attributes
static final long	PERIOD_SECOND = 1000
static final long	PERIOD_MINUTE = 60 * PERIOD_SECOND
static final long	PERIOD_HOUR = 60 * PERIOD_MINUTE
static final long	PERIOD_DAY = 24l * PERIOD_HOUR
static final long	PERIOD_WEEK = 7l * PERIOD_DAY

Detailed Description

The wrapper for the TimeActiveSensor module.

The TimeActiveSensor module registers how much time a user has been physically active (e.g. walking, running or cycling). It accumulates in real-time the number of seconds the user has been physically active since the last reset. The time can be manually reset, or a periodic reset can be used, e.g. to reset every day at 00:00.

Output:

The number of seconds the user has been physically active since the last reset. Between resets this value is monotonically non-decreasing.

Each time an input is received, the module produces an output. The output is a DataPoint with the value a double.

Input:

The linear accelerometer (burst-mode) sensor is used as input. It works with a sample rate of at least once per five minutes. This is the absolute minimum and produces bad estimates. The higher the sample frequency the faster the estimate converges to the correct value. For good a good estimate sampling at least once per minute is recommended.

Following is an example to set it up with a periodic reset every day at 20:00

Code:

 TimeActiveSensor ta = new TimeActiveSensor("time active", sensePlatform);
 //reset every day at 20:00, the date is only used to align the period with
 Calendar resetDate = new GregorianCalendar(2013, 1, 1, 20, 0);
 ta.setPeriodicReset(resetDate, TimeActiveSensor.PERIOD_DAY);

Author

Pim

Member Function Documentation

void nl.sense_os.cortex.TimeActiveSensor.addSeconds

(

double

seconds

)

Add time active seconds to the total time

Parameters

seconds

The amount of seconds to add

void nl.sense_os.cortex.TimeActiveSensor.clearPeriodicReset

(

)

Clear the periodic reset. After calling this method the time won't be reset automatically.

void nl.sense_os.cortex.TimeActiveSensor.resetTime

(

)

Reset time active to zero.

void nl.sense_os.cortex.TimeActiveSensor.setPeriodicReset	(	Calendar	resetDate,
		long	periodMillis
	)

Start a periodic reset.

Parameters

resetDate	The date at which to align resets, e.g. 8 am
periodMillis	The time interval between resets in milliseconds.

void nl.sense_os.cortex.TimeActiveSensor.testingSetTime

(

long

seconds

)

For testing purposes, set the time to a specified value. This method should only be used for testing. It sets the current time of the module to the specified time. This won't trigger a new data point, it just sets the time so the next data point will increment on top of this new value.

Parameters

seconds

The new value of the current time active, specified in seconds.

---

The documentation for this class was generated from the following file:

• android-sdk/src/nl/sense_os/cortex/TimeActiveSensor.java