Gathering Contextual Data with Power Information Using Smartphones in Internet of Everything

Table 3

Description of sensor data attributes.

Sensor	Attribute	Value type	Description
CLK	Timestamp	Long	This timestamp is a label to record the time at the start of the; process. This timestamp is a long number depicting a nanosecond.; The timestamp is also recorded after the processing has been completed; and the elapsed time is measured in picoseconds, postprocessing.
Orientation sensor	Azimuth	+ve double	It is used to measure the azimuth for the orientation of the device.
	Pitch	Double	It is used to measure the pitch for orientation of the device.
	Roll	Double	It is used to measure the roll for orientation of the device.
Accelerometer	acceleration	Double	It measures the acceleration along the -axis.
	acceleration	Double	It measures the acceleration along the -axis.
	acceleration	Double	It measures the acceleration along the -axis.
Ambiance	Lux	+ve integer	It measures the ambient illuminance in lux.
Gyroscope	angular velocity	Double	It measures the angular velocity of the device’s rotation along the -axis.
	angular velocity	Double	It measures the angular velocity of the device’s rotation along the -axis.
	angular velocity	Double	It measures the angular velocity of the device’s rotation along the -axis.
Location sensor	Latitude	+ve double	Gives the latitude of the device.
	Longitude	+ve double	Gives the longitude of the device.
	Altitude	+ve integer	Gives the altitude of the device.
Magnetometer	strength	Double	Gives the magnetic field strength along the -axis.
	strength	Double	Gives the magnetic field strength along the -axis.
	strength	Double	Gives the magnetic field strength along the -axis.
	Absolute strength	Double	Gives the absolute strength of the magnetic field.
Battery extension	Health	String	The health status of the battery.
	Level	+ve integer	Gives the battery level as a percentage of total capacity.; The before and after battery level is recorded.
	Temperature	Integer	Gives the temperature in Celsius.
	Voltage	+ve integer	Gives the voltage in millivolts (mV).
	Status	String	Gives the status, i.e., charging or discharging.
	Technology	String	The technology of the battery, e.g., lithium-ion, or nickel cadmium.
	Current draw	Integer	Measures the current draw in milliAmperes (mA). The current draw; is negative when the device is discharging. This is recorded; for both before and after processing.
Hygrometer	Humidity	Integer	Measures the humidity in the environment.
Near field communication sensor	Distance	+ve integer	Measures the near field distance of a compatible device.
Weather web service	Weather	String	Gives the outlook of the weather. The location is the latitude; and longitude measured using a location sensor.
Location web service	Address	String	Gives the address of the location. The location is the latitude; and longitude measured using a location sensor.