private XinAnGPSData ConvertBytesToEntityByFetch(byte[] sourceBuffer)
{
XinAnGPSData data = new XinAnGPSData();
GPSDataEntity entity = new GPSDataEntity();
byte[] destBuffer = null;
//GPSCode
destBuffer = new byte[4];
Array.Copy(sourceBuffer, 5, destBuffer, 0, 4);
entity.GPSCode = GetGPSCode(destBuffer);
data.FullGpsCode = base.CodePrefix + entity.GPSCode;
//ReportTime
destBuffer = new byte[6];
Array.Copy(sourceBuffer, 9, destBuffer, 0, 6);
entity.ReportTime = Transfer.TransferBCDByteToDateTime(destBuffer);
entity.ReceiveTime = DateTime.Now;
//Latitude
destBuffer = new byte[4];
Array.Copy(sourceBuffer, 15, destBuffer, 0, 4);
entity.Latitude = (decimal)ReturnLatitude(GetLatitude(destBuffer), GetLatitudeMinute(destBuffer));
//Longitude
destBuffer = new byte[4];
Array.Copy(sourceBuffer, 19, destBuffer, 0, 4);
entity.Longitude = (decimal)ReturnLongitude(GetLongitude(destBuffer), GetLongitudeMinute(destBuffer));
//Speed
destBuffer = new byte[2];
Array.Copy(sourceBuffer, 23, destBuffer, 0, 2);
entity.Speed = GetSpeed(destBuffer);
//Direction
destBuffer = new byte[2];
Array.Copy(sourceBuffer, 25, destBuffer, 0, 2);
entity.Direction = GetDirection(destBuffer);
//PositionState
destBuffer = new byte[1];
Array.Copy(sourceBuffer, 27, destBuffer, 0, 1);
entity.IsLocatedData = GetPositionState(destBuffer);
//AntennaState
destBuffer = new byte[1];
Array.Copy(sourceBuffer, 27, destBuffer, 0, 1);
entity.AntennaState = (int)GetAntennaeState(destBuffer);
//PowerState
destBuffer = new byte[1];
Array.Copy(sourceBuffer, 27, destBuffer, 0, 1);
entity.PowerState = (int)GetPowerState(destBuffer);
//Mileage
destBuffer = new byte[3];
Array.Copy(sourceBuffer, 28, destBuffer, 0, 3);
//GPS硬件计算的里程
entity.GPSDeviceMileage = (decimal)GetMileage(destBuffer);
//ACCState
destBuffer = new byte[1];
Array.Copy(sourceBuffer, 31, destBuffer, 0, 1);
entity.ACCState = GetACCState(destBuffer);
//OilState
destBuffer = new byte[1];
Array.Copy(sourceBuffer, 31, destBuffer, 0, 1);
entity.OilState = GetOilState(destBuffer);
data.BaseData = entity;
return data;
}
/// <summary> 解析补传上报GPS数据
///
/// </summary>
/// <param name="value"></param>
/// <param name="MaxSpeedMeterPerSecond"></param>
/// <returns></returns>
public XinAnGPSData DecodeGPSDataByFetch(byte[] value, double MaxSpeedMeterPerSecond)
{
XinAnGPSData aGPSInfo = new XinAnGPSData();
aGPSInfo = DecodeGPSData2(value, MaxSpeedMeterPerSecond);
aGPSInfo.BaseData.IsFetchData = true;
return aGPSInfo;
}
/// <summary> 检查异常漂移
/// 检查异常漂移
/// </summary>
/// <param name="aGPSInfo"></param>
/// <param name="aPreviousValidGPSData"></param>
/// <param name="MaxSpeedMeterPerSecond"></param>
private bool ComputeMileAgeAndVerifyData(ref XinAnGPSData aGPSInfo ,GPSDataEntity aPreviousValidGPSData,double MaxSpeedMeterPerSecond)
{
bool flag = false;
if (aGPSInfo == null)
{
return false;
}
if (aGPSInfo.BaseData.IsLocatedData)//没定位，返回FALSE
{
bool blnIsFirstGPSData = false;//是否第一点数据
if (aPreviousValidGPSData == null)
{
blnIsFirstGPSData = true;
}
System.TimeSpan dtSpan;
double dclMileage = 0;
bool blnIsGPSOverflow = false;
bool blnShoudBeStillness = false; //是否要记录里程
bool blnIsArrivalDelayed = false; //是否前条时间超过后一条时间
if (!blnIsFirstGPSData)
{
if (DateTime.Compare(aGPSInfo.BaseData.ReportTime, aPreviousValidGPSData.ReportTime) <= 0 || aGPSInfo.BaseData.ReportTime >= DateTime.Now.AddHours(1))
{//当前时间小于上一点时间，为补传数据。 若当前数据时间大于服务器时间1小时，认为是异常数据，也标记为补传数据
blnIsArrivalDelayed = true;
aGPSInfo.BaseData.IsFetchData = true;//补传数据
flag = true;
}
double CurrentLatitude = Convert.ToDouble(aGPSInfo.BaseData.Latitude);
double CurrentLongitude = Convert.ToDouble(aGPSInfo.BaseData.Longitude);
double LastLatitude = Convert.ToDouble(aPreviousValidGPSData.Latitude);
double LastLongitude = Convert.ToDouble(aPreviousValidGPSData.Longitude);
if ((CurrentLatitude != LastLatitude) || (CurrentLongitude != LastLongitude))
{
dclMileage = Transfer.GetDistance(LastLatitude, LastLongitude, CurrentLatitude, CurrentLongitude);
}
dtSpan = aGPSInfo.BaseData.ReportTime - aPreviousValidGPSData.ReportTime;
double dclMaxMileage = Math.Abs(Convert.ToDouble(MaxSpeedMeterPerSecond * dtSpan.TotalSeconds));
if (dclMileage > dclMaxMileage)
{
//异常：GPS漂移数据
blnIsGPSOverflow = true;
aGPSInfo.BaseData.IsOverflowGPSData = blnIsGPSOverflow;
}
//对速度的判断
if (aGPSInfo.BaseData.Speed > (decimal)(MaxSpeedMeterPerSecond * 3.6))
{
blnIsGPSOverflow = true;
aGPSInfo.BaseData.IsOverflowGPSData = blnIsGPSOverflow;
}
//是否要记录里程
if ((aGPSInfo.BaseData.Speed == 0) && (aPreviousValidGPSData.Speed == 0) && (dtSpan.TotalMinutes < 30))
{
blnShoudBeStillness = true;
}
#region 因停车时间延长判断
//判断停车时间是否要重新设置上报时间
if ((aGPSInfo.BaseData.Speed == 0) && (aPreviousValidGPSData.Speed == 0) && (aGPSInfo.BaseData.ACCState == 0) && (aPreviousValidGPSData.ACCState == 0))
{
if (aPreviousValidGPSData.IsStartStopCarTime)
{
aGPSInfo.BaseData.IsStartStopCarTime = true;
aGPSInfo.BaseData.StartStopCarTime = aPreviousValidGPSData.StartStopCarTime; //保存上一个停车时间点
TimeSpan StopCarTime = aGPSInfo.BaseData.ReportTime - aPreviousValidGPSData.StartStopCarTime;
if (StopCarTime.TotalMinutes > LongIntervalTimes)
{
aGPSInfo.BaseData.IsSendLongIntervalMessage = true;
}
}
else
{
aGPSInfo.BaseData.StartStopCarTime = aPreviousValidGPSData.ReportTime;
aGPSInfo.BaseData.IsStartStopCarTime = true;
}
}
else
{
aGPSInfo.BaseData.StartStopCarTime = aGPSInfo.BaseData.ReportTime;
aGPSInfo.BaseData.IsStartStopCarTime = false;
aGPSInfo.BaseData.IsSendLongIntervalMessage = false;
}
#endregion
aGPSInfo.BaseData.StarkMileage = aPreviousValidGPSData.StarkMileage;
aGPSInfo.BaseData.ControlTime = aPreviousValidGPSData.ControlTime;
}
if (((!blnIsGPSOverflow) && (!blnIsFirstGPSData) && (!blnShoudBeStillness)) && (!blnIsArrivalDelayed))
{
aGPSInfo.BaseData.Mileage = (decimal)dclMileage;
aGPSInfo.BaseData.StarkMileage = aGPSInfo.BaseData.StarkMileage + aGPSInfo.BaseData.Mileage;
}
}
return flag;
}
//判断持续未定位状态时发送重启GPS指令
public bool IsSendRsgsMessage(XinAnGPSData aXinAnGpsData, Dictionary<string, DateTime> aDicIsGPSLocaated, double Time)
{
if (aXinAnGpsData.BaseData.IsLocatedData)
{
if (aDicIsGPSLocaated.ContainsKey(aXinAnGpsData.BaseData.GPSCode))
{
aDicIsGPSLocaated[aXinAnGpsData.BaseData.GPSCode] = aXinAnGpsData.BaseData.ReceiveTime;
}
}
else
{
if (!aDicIsGPSLocaated.ContainsKey(aXinAnGpsData.BaseData.GPSCode))
aDicIsGPSLocaated.Add(aXinAnGpsData.BaseData.GPSCode, aXinAnGpsData.BaseData.ReceiveTime);
}
if (aDicIsGPSLocaated.ContainsKey(aXinAnGpsData.BaseData.GPSCode))
{
TimeSpan ts = aXinAnGpsData.BaseData.ReceiveTime - aDicIsGPSLocaated[aXinAnGpsData.BaseData.GPSCode];
if (ts.TotalMinutes > Time)
{
aDicIsGPSLocaated[aXinAnGpsData.BaseData.GPSCode] = aXinAnGpsData.BaseData.ReceiveTime;
return true;
}
}
return false;
}
