Package se.hendeby.sensordata

Class SensorData

java.lang.Object

se.hendeby.sensordata.SensorData

Direct Known Subclasses:

AccData, BleRssData, CellRssData, GPSData, GyrData, LightData, MagData, OrientData, PressureData, ProximityData, RawGyrData, RawMagData, TempData, WifiRssData

public class SensorData
extends Object

Base class for all measurement data objects. Current layout of data fields:

Data layout in MATLAB matrix

Position	Description
0	time [ms]
1-3	accelerometer; x, y, z [m/s^2]
4-6	gyroscope; x, y, z [rad/s]
7-9	magnetometer; x, y, z [uT]
10-12	GPS [deg North, deg East, alt m]
13	Pressure [hPa]
14	Light [lux]
15	Proximity [cm]
16	Temperature [deg C]
17-20	Orientation [normalized quaternion]
21-26	Uncalibrated gyroscope; x, y, z, bx, by, bz [rad/s]
27-32	Uncalibrated magnetometer; x, y, z, bx, by, bz [uT]

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	DATA_FIELDS_USED
final SensorInfo	sensorInfo	Type of the measurement in terms of a SensorInfo object.
long	time	Time when the measurement was made [ms]

Constructor Summary

Constructors

Constructor	Description
SensorData(SensorInfo sensorInfo, long time, float[] values)	Constructor.

Method Summary

Modifier and Type	Method	Description
static SensorData	deserialize(byte[] data)	Deserialize a byte[] to a measurement in a SensorData object.
long	getTime()	Timestamp getter.
float[]	getValues()	Measurement values getter.
byte[]	serialize()	Serialize the measurement for streaming or saving to file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

time

public long time

Time when the measurement was made [ms]

sensorInfo

public final SensorInfo sensorInfo

Type of the measurement in terms of a SensorInfo object.

DATA_FIELDS_USED

public static final byte DATA_FIELDS_USED

See Also:

• Constant Field Values

Constructor Details

SensorData

public SensorData(SensorInfo sensorInfo,
 long time,
 float[] values)

Constructor.

Parameters:

sensorInfo - Type of measurement.

time - Timestamp of the measurement [ms].

values - The measurements.

Method Details

getTime

public long getTime()

Timestamp getter.

Returns:

The timestamp in milliseconds.

getValues

public float[] getValues()

Measurement values getter.

Returns:

The associated measurements.

serialize

public byte[] serialize()

Serialize the measurement for streaming or saving to file.

Returns:

The serialized measurement in a byte array.

deserialize

public static SensorData deserialize(byte[] data)

Deserialize a byte[] to a measurement in a SensorData object. Data serialized using the serialize.

Parameters:

data - Data to be deserialized.

Returns:

The measurement.