public static Location closestKnownLocation(GeoCoordinate currentLoc, Location[] knownLocations)
{
GeoCoordinate otherLoc = new GeoCoordinate(knownLocations[0].Latitude, knownLocations[0].Longitude);
double minDistToKnownLocation = AlgoUtils.calcDist(currentLoc, otherLoc);
Location closestKnownLocation = knownLocations[0];
double currentDist;
for (int i = 1; i < knownLocations.Length; i++)
{
otherLoc.Latitude = knownLocations[i].Latitude;
otherLoc.Longitude = knownLocations[i].Longitude;
currentDist = AlgoUtils.calcDist(currentLoc, otherLoc);
if (currentDist < minDistToKnownLocation)
{
minDistToKnownLocation = currentDist;
closestKnownLocation = knownLocations[i];
}
}
return(closestKnownLocation);
}
/// Step B - MONITORING
public AlgoUtils.Status monitorAndAlert(string currentPatientID)
{
//***************** SETUP *****************//
bool lessThanHalf = false;
bool lessThan2 = false;
bool lessThan5 = false;
bool lessThan10 = false;
double minDistToKnownLocation = AlgoUtils.calcDist(currentLoc, new GeoCoordinate(closestKnownLocation.Latitude, closestKnownLocation.Longitude));
Trace.TraceInformation(String.Format("Dist to closest known location is {0}", minDistToKnownLocation));
//get normal time range parameters for closest known location
int[] timeRangeParameters = AlgoUtils.getSafeTimeRangeForLocation(latestSample, currentPatientID);
bottomNormalTimeRange = timeRangeParameters[0];
topNormalTimeRange = timeRangeParameters[1];
avgNormalTimeRange = timeRangeParameters[2];
Trace.TraceInformation(String.Format("bottom normal time range is {0}", bottomNormalTimeRange));
Trace.TraceInformation(String.Format("top normal time range is {0}", topNormalTimeRange));
Trace.TraceInformation(String.Format("avg normal time range is {0}", avgNormalTimeRange));
if (minDistToKnownLocation <= 10)
{
lessThan10 = true;
}
if (minDistToKnownLocation <= 5)
{
lessThan5 = true;
}
if (minDistToKnownLocation <= 2)
{
lessThan2 = true;
}
if (minDistToKnownLocation <= 0.5)
{
lessThanHalf = true;
}
//*****************************************//
if ((DateTime.Now.Hour - sampleTime.Hour) > CONNECTION_LOST_TIME_DIF)
{
return(AlgoUtils.Status.ConnectionLost);
}
Trace.TraceInformation(String.Format("latest sample hour is: {0}", sampleTime.Hour));
AlgoUtils.HeatMapDensity measuredDensity = AlgoUtils.heatMapAreaDensityLevel(currentLoc);
if (lessThanHalf) //patient is very close to a known location
{
//time doesn't matter, just make sure heartRate is okay
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
Trace.TraceInformation(String.Format("less than half, heart is okay - Safety"));
return(AlgoUtils.Status.Safety);
}
else
{
Trace.TraceInformation(String.Format("less than half, heart is BAD - Distress"));
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
//check if it's an emergency time period
else if (AlgoUtils.isTimeInSafeRange(sampleTime.Hour) == false)
{
//patient is not close enough to a known location + it's currently the EMERGENCY TIME PERIOD
Trace.TraceInformation(String.Format("more than half, EMERGENCY TIME PERIOD - Risk"));
return(AlgoUtils.Status.Risk);
}
else if (lessThan2 || measuredDensity == AlgoUtils.HeatMapDensity.High)
{
//patient is somewhat close to a known location, not in a dangerous time
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
Trace.TraceInformation(String.Format("less than 2, normal time, heart is okay - Safety"));
return(AlgoUtils.Status.Safety);
//if (AlgoUtils.isTimeInNormalRange(sampleTime.Hour))
//{
// Trace.TraceInformation(String.Format("less than 2, normal time, heart is okay - Safety"));
// return AlgoUtils.Status.Safety;
//}
//else
//{
// Trace.TraceInformation(String.Format("less than 2, BAD time, heart is okay - Wandering"));
// return AlgoUtils.Status.Wandering;
//}
}
else
{
Trace.TraceInformation(String.Format("less than 2, heart is BAD - Distress"));
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
else if (lessThan5 || measuredDensity == AlgoUtils.HeatMapDensity.Medium)
{
//patient is not too far from a known location
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
if (AlgoUtils.isTimeInNormalRange(sampleTime.Hour) == false ||
(sampleTime.Hour < avgNormalTimeRange * 0.6 || (sampleTime.Hour > avgNormalTimeRange * 1.4)))
{
Trace.TraceInformation(String.Format("less than 5, BAD time, heart is okay - Wandering"));
return(AlgoUtils.Status.Wandering);
}
}
else
{
Trace.TraceInformation(String.Format("less than 5, heart is BAD - Distress"));
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
else if (lessThan10 || measuredDensity == AlgoUtils.HeatMapDensity.Low)
{
//patient is somewhat far from a known location
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
Trace.TraceInformation(String.Format("less than 10, heart is okay - Wandering"));
return(AlgoUtils.Status.Wandering);
}
else
{
Trace.TraceInformation(String.Format("less than 10, heart is BAD - Distress"));
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
//patient is very far from a known location, and in probably ZERO-Density area in heat map
//patient is possibly lost!
Trace.TraceInformation(String.Format("more than 10 - Risk"));
return(AlgoUtils.Status.Risk);
/// 2.4 Default: sample.location>10km from known location OR in never visited before poligon on heatmap
/// 2.4.1 send PUSH to caregiver - "Your beloved John is at (sample.location) area - do you know it?"
/// 2.4.1.1 if caregiver knows it then let him add location as known location (with desc. etc.)
/// 2.4.1.2 else if caregiver marks patient as wandering then enter POSSIBLE_RISK_MODE
}
/// Step B - MONITORING_MODE
///
public AlgoUtils.Status monitorAndAlert(string currentPatientID, Sample latestSample)
{
//***************** SETUP *****************//
bool lessThanHalf = false;
bool lessThan2 = false;
bool lessThan5 = false;
bool lessThan10 = false;
GeoCoordinate currentLoc = new GeoCoordinate(latestSample.Latitude, latestSample.Longitude);
Location closestKnownLocation = AlgoUtils.closestKnownLocation(currentLoc, knownLocations);
double minDistToKnownLocation = AlgoUtils.calcDist(currentLoc, new GeoCoordinate(closestKnownLocation.Latitude, closestKnownLocation.Longitude));
//get normal time range parameters for closest known location
int[] timeRangeParameters = AlgoUtils.getSafeTimeRangeForLocation(closestKnownLocation, currentPatientID);
bottomNormalTimeRange = timeRangeParameters[0];
topNormalTimeRange = timeRangeParameters[1];
avgNormalTimeRange = timeRangeParameters[2];
if (minDistToKnownLocation <= 10)
{
lessThan10 = true;
}
if (minDistToKnownLocation <= 5)
{
lessThan5 = true;
}
if (minDistToKnownLocation <= 2)
{
lessThan2 = true;
}
if (minDistToKnownLocation <= 0.5)
{
lessThanHalf = true;
}
//*****************************************//
if (lessThanHalf) //patient is very close to a known location
{
//time doesn't matter, just make sure heartRate is okay
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
return(AlgoUtils.Status.Safety);
}
else
{
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
//check if it's an emergency time period
else if (AlgoUtils.isTimeInSafeRange(sampleTime.Hour) == false)
{
//patient is not close enough to a known location + it's currently the EMERGENCY TIME PERIOD
return(AlgoUtils.Status.Risk);
}
else if (lessThan2 || AlgoUtils.isInDensedHeatMapArea(currentLoc) == AlgoUtils.HeatMapDensity.High)
{
//patient is somewhat close to a known location, not in a dangerous time
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
if (AlgoUtils.isTimeInNormalRange(sampleTime.Hour) == false)
{
return(AlgoUtils.Status.Safety);
}
else
{
return(AlgoUtils.Status.Wandering);
}
}
else
{
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
else if (lessThan5 || AlgoUtils.isInDensedHeatMapArea(currentLoc) == AlgoUtils.HeatMapDensity.Medium)
{
//patient is not too far from a known location
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
if (AlgoUtils.isTimeInNormalRange(sampleTime.Hour) == false ||
(sampleTime.Hour < avgNormalTimeRange * 0.6 || (sampleTime.Hour > avgNormalTimeRange * 1.4)))
{
return(AlgoUtils.Status.Wandering);
}
}
else
{
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
else if (lessThan10 || AlgoUtils.isInDensedHeatMapArea(currentLoc) == AlgoUtils.HeatMapDensity.Low)
{
//patient is somewhat far from a known location
if (AlgoUtils.isHeartRateInSafeRange(latestSample.HeartRate))
{
return(AlgoUtils.Status.Wandering);
}
else
{
return(AlgoUtils.Status.Distress); //potential distress or heart issues
}
}
//patient is very far from a known location, and in probably ZERO-Density area in heat map
//patient is possibly lost!
return(AlgoUtils.Status.Risk);
/// 2.4 Default: sample.location>10km from known location OR in never visited before poligon on heatmap
/// 2.4.1 send PUSH to caregiver - "Your beloved John is at (sample.location) area - do you know it?"
/// 2.4.1.1 if caregiver knows it then let him add location as known location (with desc. etc.)
/// 2.4.1.2 else if caregiver marks patient as wandering then enter POSSIBLE_RISK_MODE
}