/// <summary>
/// Uses a PIR motion sensor, a Proximity sensor and a Photovoltaic sensor
/// </summary>
/// <param name="bathroom">The bathroom where the device is implanted</param>
private static void ProcessDeviceMethod1(Bathroom bathroom)
{
Device device = bathroom.PhotonDevice;
// Milliseconds elapsed since the last time the PIR sensor reported status change
TimeSpan PIRSpan;
int PIRMs;
// Milliseconds elapsed since the last time the Photo sensor reported status change
TimeSpan PhotoSpan;
int PhotoMs;
// Milliseconds elapsed since the last time the Proximity sensor reported status change
TimeSpan ProximitySpan;
int ProximityMs;
int PIRSecondsRequiredToOccupy = int.Parse(ConfigurationManager.AppSettings[Constants.PIRSecondsRequiredToOccupy]);
int PIRSecondsRequiredToFree = int.Parse(ConfigurationManager.AppSettings[Constants.PIRSecondsRequiredToFree]);
int lightOnThreshold = int.Parse(ConfigurationManager.AppSettings[Constants.LightOnThreshold]);
int proximityThreshold = int.Parse(ConfigurationManager.AppSettings[Constants.ProximityThreshold]);
LogController lC = new LogController();
while (true)
{
PIRSpan = DateTime.Now - device.LastPIRReportTime;
PIRMs = (int)PIRSpan.TotalMilliseconds;
PhotoSpan = DateTime.Now - device.LastPhotoReportTime;
PhotoMs = (int)PhotoSpan.TotalMilliseconds;
ProximitySpan = DateTime.Now - device.LastProximityReportTime;
ProximityMs = (int)ProximitySpan.TotalMilliseconds;
// If there is a person close the proximity sensor, the bath is occupied
if (device.ProximityValue < proximityThreshold)
{
if (!bathroom.IsOccupied && ProximityMs > 3000)
{
lC.LogStateChange(bathroom.ID, true);
}
}
// If the Proximity Sensor was not helpful to determine the bath status
else
{
// Avoid changing the state when the user is moving from the WC area to the basin area
if (ProximityMs > 5000)
{
// If there is movement and the light was turned on a few seconds ago, the bath is occupied
if (device.PIRSensorValue == 1 && device.PhotoSensorValue >= lightOnThreshold && PhotoMs < 3000)
{
if (!bathroom.IsOccupied)
{
lC.LogStateChange(bathroom.ID, true);
}
}
// If there is not movement and the light is off, the bath is free
else if (device.PIRSensorValue == 0 && device.PhotoSensorValue < lightOnThreshold)
{
if (bathroom.IsOccupied)
{
lC.LogStateChange(bathroom.ID, false);
}
}
// If the PhotoSensor was not helpful to determine the bath status
else
{
// If the device is reporting '1' and the bathroom is free
if (device.PIRSensorValue == 1 && !bathroom.IsOccupied)
{
// Avoid logging the state change more than once in a row
if (device.LastPIRReportTime > bathroom.LastOccupiedTime)
{
// If some seconds have passed with uninterrupted 'true' state
if (PIRMs > PIRSecondsRequiredToOccupy * 1000)
{
lC.LogStateChange(bathroom.ID, true);
}
}
}
// If the device is reporting '0' and the bathroom is occupied
else if (device.PIRSensorValue == 0 && bathroom.IsOccupied)
{
// Avoid logging the state change more than once in a row
if (device.LastPIRReportTime > bathroom.LastFreedTime)
{
// If some seconds have passed with a uninterrupted 'false' state
if (PIRMs > PIRSecondsRequiredToFree * 1000)
{
lC.LogStateChange(bathroom.ID, false);
}
}
}
}
}
}
Thread.Sleep(2000);
}
}