EcgDevice Class

ru.neurotech.neurodevices.ecg

Class EcgDevice

• java.lang.Object
• • <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">ru.neurotech.common.VisualizableDevice</a>
  • • ru.neurotech.neurodevices.ecg.EcgDevice

• ---

  
  

  public class <span class="typeNameLabel">EcgDevice</span>
  extends <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

• • <a name="field.summary"> </a>

    Field Summary

    Fields 

    Modifier and Type	Field and Description
    <a href="../../../../ru/neurotech/common/SubscribersNotifier.html" title="class in ru.neurotech.common">SubscribersNotifier</a><java.lang.Boolean>	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#electrodesAttachedStateChanged">electrodesAttachedStateChanged</a> Notifies when electrodes are attached or detached To get electrodes state manually use getElectrodesState
    <a href="../../../../ru/neurotech/common/SubscribersNotifier.html" title="class in ru.neurotech.common">SubscribersNotifier</a><java.lang.Double>	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#totalSignalDurationChanged">totalSignalDurationChanged</a> Notifies subscribers when signal duration is changed, when new samples received or data been loaded from external storage, or buffers been reset

    • <a name="fields.inherited.from.class.ru.neurotech.common.VisualizableDevice"> </a>

      Fields inherited from class ru.neurotech.common.<a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

      <a href="../../../../ru/neurotech/common/VisualizableDevice.html#deviceStateChanged">deviceStateChanged</a>
  • <a name="constructor.summary"> </a>

    Constructor Summary

    Constructors 

    Constructor and Description
    <a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#EcgDevice-long-">EcgDevice</a>(long nativeObjPtr)

  • <a name="method.summary"> </a>

    Method Summary

    All Methods <a href="javascript:show(2);">Instance Methods</a> <a href="javascript:show(8);">Concrete Methods</a> 

    Modifier and Type	Method and Description
    void	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#close--">close</a>()
    void	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#finalize--">finalize</a>()
    java.lang.String	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getAddress--">getAddress</a>() Returns Bluetooth LE MAC address
    int	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getAverageHeartRateOnInterval-double-double-">getAverageHeartRateOnInterval</a>(double startTime, double endTime) Returns average heart rate based on NN-interval values from specified time interval
    int	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getBatteryLevel--">getBatteryLevel</a>() Returns battery state
    int	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getCurrentHeartRate--">getCurrentHeartRate</a>() Calculates heart rate for recently received ECG samples Use this method to monitor heart rate during signal receiving is active It's not recommended to use this method to calculate heart rate while signal receiving is stopped, use getAverageHeartRateOnInterval instead
    double	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getCurrentHeartRateVariability--">getCurrentHeartRateVariability</a>() Returns currently detected value of heart rate variability Use this method to monitor HRV during signal receiving To get HRV for various intervals while signal receiving is stopped use getHeartRateVariabilityForInterval
    double	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getCurrentStressIndex--">getCurrentStressIndex</a>() Returns value of stress index for real-time monitoring Use this method to monitor stress index while signal receiving is active To get stress index for various intervals while signal receiving is stopped use getStressIndexForInterval
    double[]	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getEcgSignal-double-double-">getEcgSignal</a>(double time, double duration) Returns ECG signal stored in buffer for selected time interval If interval exceeds maximum or minimum buffer time, signal samples for these intervals will be equal to zero
    boolean	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getElectrodesState--">getElectrodesState</a>() Returns flag indicating whether electrodes properly attached or not
    double	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getHeartRateVariabilityForInterval-double-double-">getHeartRateVariabilityForInterval</a>(double startTime, double endTime) Returns average value of heart rate variability on interval
    java.lang.String	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getName--">getName</a>() Returns name of BLE device
    <a href="../../../../ru/neurotech/neurodevices/NeuroDevice.html" title="class in ru.neurotech.neurodevices">NeuroDevice</a>	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getNeuroDevice--">getNeuroDevice</a>() Returns physical device object which this visual device represents
    <a href="../../../../ru/neurotech/neurodevices/ecg/RPeak.html" title="class in ru.neurotech.neurodevices.ecg">RPeak</a>[]	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getRWavesOnInterval-double-double-">getRWavesOnInterval</a>(double startTime, double endTime) Detects R-waves in signal for specified time interval
    double	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getStressIndexForInterval-double-double-">getStressIndexForInterval</a>(double startTime, double endTime) Returns average value of stress index on interval
    double	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#getTotalSignalDuration--">getTotalSignalDuration</a>() Returns total signal duration in current test
    void	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#reset--">reset</a>() Clears signal buffer, sets duration to zero and resets all parameters to default values
    void	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#startReceive--">startReceive</a>()
    void	<a href="../../../../ru/neurotech/neurodevices/ecg/EcgDevice.html#stopReceive--">stopReceive</a>()

    • <a name="methods.inherited.from.class.java.lang.Object"> </a>

      Methods inherited from class java.lang.Object

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

• • <a name="field.detail"> </a>

    Field Detail

    <a name="totalSignalDurationChanged"> </a>

    • totalSignalDurationChanged

      public final <a href="../../../../ru/neurotech/common/SubscribersNotifier.html" title="class in ru.neurotech.common">SubscribersNotifier</a><java.lang.Double> totalSignalDurationChanged

      Notifies subscribers when signal duration is changed,

      when new samples received or data been loaded from external storage,
      

      or buffers been reset

    <a name="electrodesAttachedStateChanged"> </a>

    • electrodesAttachedStateChanged

      public final <a href="../../../../ru/neurotech/common/SubscribersNotifier.html" title="class in ru.neurotech.common">SubscribersNotifier</a><java.lang.Boolean> electrodesAttachedStateChanged

      Notifies when electrodes are attached or detached To get electrodes state manually use getElectrodesState
  • <a name="constructor.detail"> </a>

    Constructor Detail

    <a name="EcgDevice-long-"> </a>

    • EcgDevice

      public EcgDevice(long nativeObjPtr)

  • <a name="method.detail"> </a>

    Method Detail

    <a name="finalize--"> </a>

    • finalize

      public void finalize()
                    throws java.lang.Throwable

      Overrides:

      finalize in class java.lang.Object

      Throws:

      java.lang.Throwable

    <a name="close--"> </a>

    • close

      public void close()

    <a name="getName--"> </a>

    • getName

      public java.lang.String getName()

      Description copied from class: <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getName--">VisualizableDevice</a>
      Returns name of BLE device

      Specified by:

      <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getName--">getName</a> in class <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

      Returns:

      BLE device name

    <a name="getAddress--"> </a>

    • getAddress

      public java.lang.String getAddress()

      Description copied from class: <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getAddress--">VisualizableDevice</a>
      Returns Bluetooth LE MAC address

      Specified by:

      <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getAddress--">getAddress</a> in class <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

      Returns:

      device unique address

    <a name="getBatteryLevel--"> </a>

    • getBatteryLevel

      public int getBatteryLevel()

      Description copied from class: <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getBatteryLevel--">VisualizableDevice</a>
      Returns battery state

      Specified by:

      <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getBatteryLevel--">getBatteryLevel</a> in class <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

      Returns:

      battery charge level in percents

    <a name="getNeuroDevice--"> </a>

    • getNeuroDevice

      public <a href="../../../../ru/neurotech/neurodevices/NeuroDevice.html" title="class in ru.neurotech.neurodevices">NeuroDevice</a> getNeuroDevice()

      Description copied from class: <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getNeuroDevice--">VisualizableDevice</a>
      Returns physical device object which this visual device represents

      Specified by:

      <a href="../../../../ru/neurotech/common/VisualizableDevice.html#getNeuroDevice--">getNeuroDevice</a> in class <a href="../../../../ru/neurotech/common/VisualizableDevice.html" title="class in ru.neurotech.common">VisualizableDevice</a>

      Returns:

      NeuroDevice of current visual device

    <a name="startReceive--"> </a>

    • startReceive

      public void startReceive()

    <a name="stopReceive--"> </a>

    • stopReceive

      public void stopReceive()

    <a name="reset--"> </a>

    • reset

      public void reset()

      Clears signal buffer, sets duration to zero and resets all parameters to default values

    <a name="getTotalSignalDuration--"> </a>

    • getTotalSignalDuration

      public double getTotalSignalDuration()

      Returns total signal duration in current test

      Returns:

      signal duration in seconds

    <a name="getEcgSignal-double-double-"> </a>

    • getEcgSignal

      public double[] getEcgSignal(double time,
                                   double duration)

      Returns ECG signal stored in buffer for selected time interval

      If interval exceeds maximum or minimum buffer time, signal samples
      

      for these intervals will be equal to zero

      Parameters:

      time - Start time of interval

      duration - Duration of interval

      Returns:

      Signal samples array

    <a name="getRWavesOnInterval-double-double-"> </a>

    • getRWavesOnInterval

      public <a href="../../../../ru/neurotech/neurodevices/ecg/RPeak.html" title="class in ru.neurotech.neurodevices.ecg">RPeak</a>[] getRWavesOnInterval(double startTime,
                                         double endTime)

      Detects R-waves in signal for specified time interval

      Parameters:

      startTime - Start time of interval

      endTime - End time of interval

      Returns:

      Array of RPeaks

    <a name="getCurrentHeartRate--"> </a>

    • getCurrentHeartRate

      public int getCurrentHeartRate()

      Calculates heart rate for recently received ECG samples

      Use this method to monitor heart rate during signal receiving is active
      It's not recommended to use this method to calculate heart rate
      

      while signal receiving is stopped, use getAverageHeartRateOnInterval instead

      Returns:

      Heart rate in beats per minute

    <a name="getAverageHeartRateOnInterval-double-double-"> </a>

    • getAverageHeartRateOnInterval

      public int getAverageHeartRateOnInterval(double startTime,
                                               double endTime)

      Returns average heart rate based on NN-interval values from specified time interval

      Parameters:

      startTime - Start time for heart rate calculation

      endTime - End time for heart rate calculation

      Returns:

      Heart rate in beats per minute

    <a name="getCurrentHeartRateVariability--"> </a>

    • getCurrentHeartRateVariability

      public double getCurrentHeartRateVariability()

      Returns currently detected value of heart rate variability

      Use this method to monitor HRV during signal receiving
      To get HRV for various intervals while signal receiving is stopped
      

      use getHeartRateVariabilityForInterval

      Returns:

      HRV value

    <a name="getHeartRateVariabilityForInterval-double-double-"> </a>

    • getHeartRateVariabilityForInterval

      public double getHeartRateVariabilityForInterval(double startTime,
                                                       double endTime)

      Returns average value of heart rate variability on interval

      Parameters:

      startTime - Start time of calculation interval

      endTime - End time of calculation interval

      Returns:

      HRV value

    <a name="getCurrentStressIndex--"> </a>

    • getCurrentStressIndex

      public double getCurrentStressIndex()

      Returns value of stress index for real-time monitoring

      Use this method to monitor stress index while signal receiving is active
      To get stress index for various intervals while signal receiving is stopped
      

      use getStressIndexForInterval

      Returns:

      Stress index of current signal

    <a name="getStressIndexForInterval-double-double-"> </a>

    • getStressIndexForInterval

      public double getStressIndexForInterval(double startTime,
                                              double endTime)

      Returns average value of stress index on interval

      Parameters:

      startTime - Start time of calculation interval

      endTime - End time of calculation interval

      Returns:

      Stress index value

    <a name="getElectrodesState--"> </a>

    • getElectrodesState

      public boolean getElectrodesState()

      Returns flag indicating whether electrodes properly attached or not

      Returns:

      Is electrodes attached