/*
* Calculate class to process accelerometer data
*
- * @author Kai Rasilainen
+ * @author Kai Rasilainen <kai.rasilainen@fudeco.com>
+ * @author Jukka Kurttila <jukka.kurttila@fudeco.com>
+ * @author Toni Jussila <toni.jussila@fudeco.com>
* @copyright (c) 2010 Speed Freak team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*/
#include "calculate.h"
#include <math.h>
-
#include <QFile>
#include <QString>
#include <QTimer>
const double SECONDS_IN_HOUR = 3600;
const double AIR_DENSITY = 1.225;
const double WATTS_PER_HORSEPOWER = 745.69987158227025;
-
const double carFrontalArea = 1.5;
const double dragCoefficient = 0.31;
const int carWeight = 850;
+/**
+ * Default constructor for Calculate class.
+ */
Calculate::Calculate()
{
this->reset();
}
+/**
+ * Default destructor for Calculate class.
+ * Deletes all dynamic objects and sets them to NULL.
+ */
Calculate::~Calculate()
{
}
+/**
+ * This function reset all variables.
+ */
void Calculate::reset()
{
averageSpeed = 0;
+ averagePower = 0;
+ peakPower = 0;
+ currentPower = 0;
currentSpeed = 0;
+ maxSpeed = 0;
distanceTraveled = 0;
lastAcceleration = 0;
lastDistance = 0;
totalTime = 0;
count = 0;
- speedCheckPoints.append(10);
- speedCheckPoints.append(20);
- speedCheckPoints.append(30);
- speedCheckPoints.append(40);
-
+ if(speedCheckPoints.count() == 0)
+ {
+ speedCheckPoints.append(10);
+ speedCheckPoints.append(20);
+ speedCheckPoints.append(30);
+ speedCheckPoints.append(40);
+ speedCheckPoints.append(50);
+ speedCheckPoints.append(60);
+ speedCheckPoints.append(70);
+ speedCheckPoints.append(80);
+ speedCheckPoints.append(90);
+ speedCheckPoints.append(100);
+ }
+ checkPointCounter = 0;
+ checkPoint = speedCheckPoints[checkPointCounter];
+ valuesMap.clear();
}
-
/**
* This is a main function for calculating various parameters. Accelerometer
* provides currentAcceleration and calling function measures time (seconds).
* This function should be called 20-30 times/second to minimize
* calculation error.
-
- * To be added: params like horsepower.
+ *
+ * @param double current acceleration
+ * @param double seconds
*/
void Calculate::calculateParameters(double currentAcceleration, double seconds)
{
double force, power1, power2;
+
+ currentAcceleration *= G_ACCELERATION;
numOfIterations++;
totalTime = (totalTime + seconds);
// First integration of acceleration provides speed
currentSpeed = (lastSpeed + (((currentAcceleration + lastAcceleration) * seconds) / 2));
+ // Update maximum speed
+ if (currentSpeed > maxSpeed)
+ maxSpeed = currentSpeed;
+
// Second integration: distance.
distanceTraveled = (lastDistance + (((currentSpeed + lastSpeed) * seconds) / 2));
numOfIterations--;
}
- // Checkpoints
- if ((lastSpeed == 0))
+ if( (checkPoint > 0) && (currentSpeed*3.6 > checkPoint) )
{
- lastCheckpoint = 0;
- }
-
- // List of checkpoints
- if (!(speedCheckPoints.isEmpty()))
- {
- foreach (double speed, speedCheckPoints)
+ //Update checkPoint
+ if( checkPointCounter <= speedCheckPoints.count() )
{
- if ((lastCheckpoint != floor(speed)) && (floor(currentSpeed) == floor(speed)))
+ //Save time
+ valuesMap.insert( checkPoint, totalTime );
+ if( checkPointCounter < speedCheckPoints.count() )
+ {
+ checkPoint = speedCheckPoints[checkPointCounter];
+ }
+ else
{
- emit checkPointReached(totalTime, currentSpeed);
- lastCheckpoint = floor(currentSpeed);
+ checkPoint = 0;
}
+ checkPointCounter++;
}
}
// Check for movement
- accelStoppedCheck(currentAcceleration);
+ //accelStoppedCheck(currentAcceleration);
lastSpeed = currentSpeed;
lastAcceleration = currentAcceleration;
* This function checks if acceleration has stopped for
* a short period of time. Velocity is set to zero to avoid
* distance errors.
+ *
+ * @param double current acceleration
*/
void Calculate::accelStoppedCheck(double currentAcceleration)
{
-
// counting number of acceleration samples that equals zero
if (currentAcceleration==0) {
count++;
}
}
-// Getters and setters
-
+/**
+ * Get average speed.
+ *
+ * @return double average speed
+ */
double Calculate::getAverageSpeed()
{
return averageSpeed;
}
+/**
+ * Set average speed.
+ *
+ * @param double average speed
+ */
void Calculate::setAverageSpeed(double value)
{
averageSpeed = value;
}
+/**
+ * Get current speed.
+ *
+ * @return double current speed
+ */
double Calculate::getCurrentSpeed()
{
return currentSpeed;
}
+/**
+ * Set current speed.
+ *
+ * @param double current speed
+ */
void Calculate::setCurrentSpeed(double value)
{
currentSpeed = value;
}
+/**
+ * Get travelled distance.
+ *
+ * @return double travelled distance
+ */
double Calculate::getDistanceTraveled()
{
return distanceTraveled;
}
+/**
+ * Set travelled distance.
+ *
+ * @param double travelled distance
+ */
void Calculate::setDistanceTraveled(double value)
{
distanceTraveled = value;
}
+/**
+ * Get last acceleration.
+ *
+ * @return double last acceleration
+ */
double Calculate::getLastAcceleration()
{
return lastAcceleration;
}
+/**
+ * Set last acceleration.
+ *
+ * @param double last acceleration
+ */
void Calculate::setLastAcceleration(double value)
{
lastAcceleration = value;
}
+/**
+ * Get last distance.
+ *
+ * @return double last distance
+ */
double Calculate::getLastDistance()
{
return lastDistance;
}
+/**
+ * Set last distance.
+ *
+ * @param double last distance
+ */
void Calculate::setLastDistance(double value)
{
lastDistance = value;
}
+/**
+ * Get last speed.
+ *
+ * @return double last speed
+ */
double Calculate::getLastSpeed()
{
return lastSpeed;
}
+/**
+ * Set last speed.
+ *
+ * @param double last speed
+ */
void Calculate::setLastSpeed(double value)
{
lastSpeed = value;
}
+/**
+ * Get number of iterations.
+ *
+ * @return long number of iterations
+ */
long Calculate::getNumOfIterations()
{
return numOfIterations;
}
+/**
+ * Set number of iterations.
+ *
+ * @param long number of iterations
+ */
void Calculate::setNumOfIterations(long value)
{
numOfIterations = value;
}
+/**
+ * Get total time.
+ *
+ * @return double total time
+ */
double Calculate::getTotalTime()
{
return totalTime;
}
+/**
+ * Set total time.
+ *
+ * @param double total time
+ */
void Calculate::setTotalTime(double value)
{
totalTime = value;
}
+
+/**
+ * Get current power.
+ *
+ * @return double current power
+ */
+double Calculate::getCurrentPower()
+{
+ return currentPower;
+}
+
+/**
+ * Set current power.
+ *
+ * @param double current power
+ */
+void Calculate::setCurrentPower(double value)
+{
+ currentPower = value;
+}
+
+/**
+ * Get peek power.
+ *
+ * @return double peek power
+ */
+double Calculate::getPeakPower()
+{
+ return peakPower;
+}
+
+/**
+ * Set peek power.
+ *
+ * @param double peek power
+ */
+void Calculate::setPeakPower(double value)
+{
+ peakPower = value;
+}
+
+/**
+ * Get average power.
+ *
+ * @return double average power
+ */
+double Calculate::getAveragePower()
+{
+ if (numOfIterations > 0)
+ {
+ return (averagePower/numOfIterations);
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+/**
+ * Set average power.
+ *
+ * @param double average power
+ */
+void Calculate::setAveragePower(double value)
+{
+ averagePower = value;
+}
+
+/**
+ * Get max speed.
+ *
+ * @return double max speed
+ */
+double Calculate::getMaxSpeed()
+{
+ return maxSpeed;
+}
+
+/**
+ * Set max speed.
+ *
+ * @param double max speed
+ */
+void Calculate::setMaxSpeed(double value)
+{
+ maxSpeed = value;
+}
+
+/**
+ * Get values map.
+ *
+ * @return QMap<int,double> values map.
+ */
+QMap<int,double> Calculate::getValuesMap()
+{
+ return valuesMap;
+}
projects / speedfreak / blobdiff