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Elevation gain: apply exponential smoothing and limit changes (defined change diff per sensor value).

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This commit is contained in:
Dennis Guse
2020-06-21 20:01:47 +02:00
parent 8a14bc46f6
commit c7db4f528e
4 changed files with 56 additions and 24 deletions
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src/main/java/de/dennisguse/opentracks/services/sensors/ElevationSumManager.java
+13 -11
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@@ -23,7 +23,9 @@ public class ElevationSumManager implements SensorEventListener {
private boolean isConnected = false;
private float lastUsedPressureValue_hPa;
private float lastAcceptedPressureValue_hPa;
private float lastSeenSensorValue_hPa;
private float elevationGain_m;
private float elevationLoss_m;
@@ -38,7 +40,7 @@ public class ElevationSumManager implements SensorEventListener {
}
isConnected = sensorManager.registerListener(this, pressureSensor, SAMPLING_RATE);
lastUsedPressureValue_hPa = Float.NaN;
lastAcceptedPressureValue_hPa = Float.NaN;
reset();
}
@@ -82,21 +84,21 @@ public class ElevationSumManager implements SensorEventListener {
@VisibleForTesting
void onSensorValueChanged(float value_hPa) {
if (Float.isNaN(lastUsedPressureValue_hPa)) {
lastUsedPressureValue_hPa = value_hPa;
if (Float.isNaN(lastAcceptedPressureValue_hPa)) {
lastAcceptedPressureValue_hPa = value_hPa;
lastSeenSensorValue_hPa = value_hPa;
return;
}
PressureSensorUtils.ElevationChange elevationChange = PressureSensorUtils.computeChanges_m(lastUsedPressureValue_hPa, value_hPa);
PressureSensorUtils.ElevationChange elevationChange = PressureSensorUtils.computeChangesWithSmoothing_m(lastAcceptedPressureValue_hPa, lastSeenSensorValue_hPa, value_hPa);
if (elevationChange != null) {
if (elevationChange.getElevationChange_m() > 0) {
elevationGain_m += elevationChange.getElevationChange_m();
} else {
elevationLoss_m += elevationChange.getElevationChange_m();
}
lastUsedPressureValue_hPa = elevationChange.getCurrentSensorValue_hPa();
elevationGain_m += elevationChange.getElevationGain_m();
elevationLoss_m += elevationChange.getElevationLoss_m();
lastAcceptedPressureValue_hPa = elevationChange.getCurrentSensorValue_hPa();
}
lastSeenSensorValue_hPa = value_hPa;
Log.v(TAG, "elevation gain: " + elevationGain_m);
}
}