/// <summary>
/// Consturctor of FuelTripCalculator.
/// </summary>
/// <param name="option">Calculation option.</param>
/// <param name="calculationMethod">Calclation method</param>
public FuelTripCalculator(FuelTripCalculatorOption option, FuelCalculationMethod calculationMethod)
{
this.calculatorOption = option;
this.calculationMethod = calculationMethod;
totalTripFuel = new TripFuelContent();
sectElapsed = 0;
sectStoreMax = 60;
sectSpan = 60 * 1000;
sectTripFuelTemporary = new TripFuelContent();
sectTripFuelQueue = new Queue <TripFuelContent>();
sectTripFuelLatest = new TripFuelContent();
saveElapsedTime = 0;
//Set data folder and file path.
folderPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
filePath = Path.Combine(folderPath, "." + "FUELTRIP_Logger");
loadTripFuel();
stopWatch = new Stopwatch();
stopWatch.Reset();
}
private void enqueueSectTripFuel(TripFuelContent content)
{
sectTripFuelLatest = content;
sectTripFuelQueue.Enqueue(content);
if (sectTripFuelQueue.Count > sectStoreMax)
{
sectTripFuelQueue.Dequeue();
}
}
public void loadTripFuel()
{
System.Xml.Serialization.XmlSerializer serializer =
new System.Xml.Serialization.XmlSerializer(typeof(TripFuelContent));
try
{
System.IO.FileStream fs =
new System.IO.FileStream(filePath, System.IO.FileMode.Open);
try
{
totalTripFuel =
(TripFuelContent)serializer.Deserialize(fs);
}
catch (XmlException ex)
{
Console.WriteLine(ex.Message);
this.resetTotalTripFuel();
}
fs.Close();
}
catch (FileNotFoundException ex)
{
Console.WriteLine(ex.Message);
this.resetTotalTripFuel();
}
catch (DirectoryNotFoundException ex)
{
Console.WriteLine(ex.Message);
System.IO.Directory.CreateDirectory(folderPath);
this.resetSectTripFuel();
}
catch (System.Security.SecurityException ex)
{
Console.WriteLine(ex.Message);
this.resetTotalTripFuel();
}
}
public void resetSectTripFuel()
{
sectTripFuelLatest = new TripFuelContent();
sectTripFuelQueue = new Queue <TripFuelContent> ();
}
public void resetTotalTripFuel()
{
totalTripFuel = new TripFuelContent();
}
/// <summary>
/// Update fuel and trip by given parameters.
/// (Unused parameters are ignored for calculation)
/// </summary>
/// <param name="rev">Engine rev (only refered on RPM_INJECTION_PW mode)</param>
/// <param name="speed">Vehicle speed.</param>
/// <param name="injpulseWdth">Injection pulse width (in ms)(only refered on RPM_INJECTION_PW mode)</param>
/// <param name="massAirFlow">Mass air flow (g/s) (only refered on MASS_AIR_FLOW or MASS_AIR_FLOW_AF mode)</param>
/// <param name="AFRatio">AF ration (only refered on MASS_AIR_FLOW_AF mode)</param>
/// <param name="fuelRate">Fuel rate (L/h) (only refered on FUEL_RATE mode)</param>
public void update(double rev, double speed, double injpulseWdth, double massAirFlow, double AFRatio, double fuelRate)
{
if (!stopWatch.IsRunning)
{
stopWatch.Start();
return;
}
stopWatch.Stop();
//get elasped time
long stopwatch_elapsed = stopWatch.ElapsedMilliseconds;
stopWatch.Reset();
stopWatch.Start();
// Do nothing if the elapsed time below StopWatchMinTick
if (stopwatch_elapsed < StopWatchMinTick)
{
return;
}
// Invoke timeout exception if the elapsed time over timeout
if (stopwatch_elapsed > StopWatchTimeout)
{
throw new TimeoutException("tacho/speed/injpulse/massAirFlow/AFRatio update span is too large (Timeout).");
}
//Calculate momentary trip from speed.
momentaryTrip = getMomentaryTrip(stopwatch_elapsed, speed, calculatorOption);
//Calculate momentart fuel consumption.
switch (calculationMethod)
{
case FuelCalculationMethod.RPM_INJECTION_PW:
momentaryFuelConsumption = FuelCalcualtionFormulas.FuelCalcByRevInjPW(stopwatch_elapsed, rev, injpulseWdth, calculatorOption);
break;
case FuelCalculationMethod.MASS_AIR_FLOW:
momentaryFuelConsumption = FuelCalcualtionFormulas.FuelCalcByMassAir(stopwatch_elapsed, massAirFlow, calculatorOption);
break;
case FuelCalculationMethod.MASS_AIR_FLOW_AF:
momentaryFuelConsumption = FuelCalcualtionFormulas.FuelCalcByAFAndMassAir(stopwatch_elapsed, massAirFlow, AFRatio, calculatorOption);
break;
case FuelCalculationMethod.FUEL_RATE:
momentaryFuelConsumption = fuelRate / 3600;
break;
}
// Add to tolal trip and total fuel.
totalTripFuel.trip += momentaryTrip;
totalTripFuel.fuelConsumption += momentaryFuelConsumption;
// Increase section elapsed timer co
sectElapsed += stopwatch_elapsed;
// Update sect data.
if (sectElapsed < sectSpan)
{
sectTripFuelTemporary.trip += momentaryTrip;
sectTripFuelTemporary.fuelConsumption += momentaryFuelConsumption;
}
else
{
enqueueSectTripFuel(sectTripFuelTemporary);
sectTripFuelTemporary = new TripFuelContent();
sectElapsed = 0;
//Invoke event
SectFUELTRIPUpdated(this, EventArgs.Empty);
}
//Save total fuel and trip to file by saveSpan(default : 5min)
if (saveElapsedTime < saveSpan)
{
saveElapsedTime += stopwatch_elapsed;
}
else
{
saveTripFuel();
saveElapsedTime = 0;
}
}
