public virtual decimal CalculatePercentage(string roleType, decimal actualNoiseLevel, int buttonPressed, int backgroundNoise, string frequency, NoiseProtection noiseProtection, TimeSpan actualExposure)
{
var noiseProtectionDampening = noiseProtection.NoiseDampening;
if (frequency == "M" && noiseProtection.NoiseProtectionDefinition.Id == 1)
{
noiseProtectionDampening = 16;
}
if (frequency == "H" && noiseProtection.NoiseProtectionDefinition.Id == 1)
{
noiseProtectionDampening = 18;
}
if (frequency == "M" && noiseProtection.NoiseProtectionDefinition.Id == 2)
{
noiseProtectionDampening = 22;
}
if (frequency == "H" && noiseProtection.NoiseProtectionDefinition.Id == 2)
{
noiseProtectionDampening = 24;
}
// Special handling for areanoise
if (roleType == RoleTypeEnum.AreaNoise.ToString() && noiseProtection.NoiseProtectionDefinition.Id == 3)
{
if (actualNoiseLevel > 110)
{
return((decimal)(actualExposure.TotalMinutes * 0.441667));
}
if (actualNoiseLevel > 105)
{
return((decimal)(actualExposure.TotalMinutes * 0.138888));
}
if (actualNoiseLevel > 100)
{
return((decimal)(actualExposure.TotalMinutes * 0.043750));
}
if (actualNoiseLevel > 95)
{
return((decimal)(actualExposure.TotalMinutes * 0.013541));
}
if (actualNoiseLevel > 90)
{
return((decimal)(actualExposure.TotalMinutes * 0.004167));
}
if (actualNoiseLevel > 85)
{
return((decimal)(actualExposure.TotalMinutes * 0.001042));
}
return((decimal)(0));
}
// Special handling for areanoise
if (roleType == RoleTypeEnum.AreaNoise.ToString())
{
if (actualNoiseLevel > 110)
{
return(101);
}
if (actualNoiseLevel > 105)
{
return((decimal)(actualExposure.TotalMinutes * 3.333333));
}
if (actualNoiseLevel > 100)
{
return((decimal)(actualExposure.TotalMinutes * 0.833333));
}
if (actualNoiseLevel > 95)
{
return((decimal)(actualExposure.TotalMinutes * 0.277777));
}
if (actualNoiseLevel > 90)
{
return((decimal)(actualExposure.TotalMinutes * 0.277777));
}
if (actualNoiseLevel > 85)
{
return((decimal)(actualExposure.TotalMinutes * 0.138888));
}
return((decimal)(actualExposure.TotalMinutes * 0.027712));
}
const double timeInFullShift = 720;
if (backgroundNoise == 0)
{
backgroundNoise = 70;
}
// Støynivå => 10* LOG(10^(støydef/10) + 10^(bakgrunnsstøy/10)
var noiseLevel = 10 *
Math.Log((Math.Pow(10, ((double)actualNoiseLevel / 10)) +
Math.Pow(10, ((double)backgroundNoise / 10))), 10.0);
// Norm verdi => 10 * LOG (10^(støynivå/10)) * knappen inne / 100)
var normalizedValue = 10 * Math.Log((Math.Pow(10, (noiseLevel / 10)) * ((double)buttonPressed / 100)) + Math.Pow(10, ((double)backgroundNoise / 10)) * (((100 - (double)buttonPressed) / 100)), 10.0);
// Norm verdi med hørselsvern
var normValueWithNoiseProtection = normalizedValue - noiseProtectionDampening;
var percentMinutes = actualExposure.TotalMinutes / timeInFullShift;
// Eksponering i db => 10 * LOG (Time in minutes / Time in full shift * 10 ^ (Noise - noiseprotection / 10)
var exposure = 10 *
Math.Log((percentMinutes *
Math.Pow(10, (normValueWithNoiseProtection / 10))), 10.0);
// % beregning => 10^(exposure/10))/(10^(80/10))*100)
var calcPerc = (Math.Pow(10, (exposure / 10))) / (Math.Pow(10, (80 / 10))) * 100;
return((decimal)calcPerc);
}
public virtual TimeSpan CalculateTimeSpan(string roleType, decimal actualNoiseLevel, int buttonPressed, int backgroundNoise, string frequency, NoiseProtection noiseProtection, int percentage)
{
var noiseProtectionDampening = noiseProtection.NoiseDampening;
if (frequency == "M" && noiseProtection.NoiseProtectionDefinition.Id == 1)
{
noiseProtectionDampening = 16;
}
if (frequency == "H" && noiseProtection.NoiseProtectionDefinition.Id == 1)
{
noiseProtectionDampening = 18;
}
if (frequency == "M" && noiseProtection.NoiseProtectionDefinition.Id == 2)
{
noiseProtectionDampening = 22;
}
if (frequency == "H" && noiseProtection.NoiseProtectionDefinition.Id == 2)
{
noiseProtectionDampening = 24;
}
// Special handling for areanoise
if (roleType == RoleTypeEnum.AreaNoise.ToString() && noiseProtection.NoiseProtectionDefinition.Id == 3)
{
if (actualNoiseLevel > 110)
{
return(TimeSpan.FromMinutes(percentage / 0.438596).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.438596));
}
if (actualNoiseLevel > 105)
{
return(TimeSpan.FromMinutes(percentage / 0.138888).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.138888));
}
if (actualNoiseLevel > 100)
{
return(TimeSpan.FromMinutes(percentage / 0.043750).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.043750));
}
if (actualNoiseLevel > 95)
{
return(TimeSpan.FromMinutes(percentage / 0.013541).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.013541));
}
if (actualNoiseLevel > 90)
{
return(TimeSpan.FromMinutes(percentage / 0.004167).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.004167));
}
if (actualNoiseLevel > 85)
{
return(TimeSpan.FromMinutes(percentage / 0.001042).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.001042));
}
return(new TimeSpan(0, 0, 960, 0));
}
// Special handling for areanoise
if (roleType == RoleTypeEnum.AreaNoise.ToString())
{
if (actualNoiseLevel > 110)
{
return(new TimeSpan());
}
if (actualNoiseLevel > 105)
{
return(TimeSpan.FromMinutes(percentage / 3.333333));
}
if (actualNoiseLevel > 100)
{
return(TimeSpan.FromMinutes(percentage / 0.833333).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.833333));
}
if (actualNoiseLevel > 95)
{
return(TimeSpan.FromMinutes(percentage / 0.277777).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.277777));
}
if (actualNoiseLevel > 90)
{
return(TimeSpan.FromMinutes(percentage / 0.277777).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.277777));
}
if (actualNoiseLevel > 85)
{
return(TimeSpan.FromMinutes(percentage / 0.138888).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.138888));
}
return(TimeSpan.FromMinutes(percentage / 0.104166).Days > 0 ? new TimeSpan(0, 16, 0, 0) : TimeSpan.FromMinutes(percentage / 0.104166));
}
const double timeInFullShift = 720;
if (backgroundNoise == 0)
{
backgroundNoise = 70;
}
// Støynivå => 10* LOG(10^(støydef/10) + 10^(bakgrunnsstøy/10)
var noiseLevel = 10 *
Math.Log((Math.Pow(10, ((double)actualNoiseLevel / 10)) +
Math.Pow(10, ((double)backgroundNoise / 10))), 10.0);
// Norm verdi => 10 * LOG (10^(støynivå/10)) * knappen inne / 100) + 10 ^(bakgrunnsstøy/10) * (100 - knappen inne)/100);
var normalizedValue = 10 * Math.Log((Math.Pow(10, (noiseLevel / 10)) * ((double)buttonPressed / 100)) + Math.Pow(10, ((double)backgroundNoise / 10)) * (((100 - (double)buttonPressed) / 100)), 10.0);
// Norm verdi med hørselsvern
var normValueWithNoiseProtection = normalizedValue - noiseProtectionDampening;
// Prosent * tid full skift * (10^(80/10))/(10^(Normalisert verdi med hørselsvern/10))
var allowedExposure = ((double)percentage / 100) * timeInFullShift *
((Math.Pow(10, (80 / 10))) / Math.Pow(10, normValueWithNoiseProtection / 10));
var timeSpan = new TimeSpan(0, 0, (int)Math.Round(allowedExposure), 0);
if (timeSpan.Days > 0 || timeSpan.Days == 0 && timeSpan.Hours >= 16)
{
timeSpan = new TimeSpan(0, 16, 0, 0);
}
return(timeSpan);
}
