Наследование: BaseDataObject
Пример #1
0
        public async Task SendTripPointToIOTHub(string tripId, string userId, TripPoint tripDataPoint)
        {
            //Note: Each individual trip point is being serialized separately so that it can be sent over as an individual message
            //This is the expected format by the IOT Hub\ML
            var settings = new JsonSerializerSettings {ContractResolver = new CustomContractResolver()};
            var tripDataPointBlob = JsonConvert.SerializeObject(tripDataPoint, settings);

            var tripBlob = JsonConvert.SerializeObject(
                new
                {
                    TripId = tripId,
                    UserId = userId
                });

            tripBlob = tripBlob.TrimEnd('}');
            string packagedBlob = $"{tripBlob},\"TripDataPoint\":{tripDataPointBlob}}}";

            if (!CrossConnectivity.Current.IsConnected)
            {
                //If there is no network connection, save in buffer and try again
                Logger.Instance.Track("Unable to push data to IOT Hub - no network connection.");
                await AddTripPointToBuffer(packagedBlob);
                return;
            }

            try
            {
                await iotHub.SendEvent(packagedBlob);
            }
            catch (Exception e)
            {
                //An exception will be thrown if the data isn't received by the IOT Hub; store data in buffer and try again
                Logger.Instance.Track("Unable to send data to IOT Hub: " + e.Message);
                AddTripPointToBuffer(packagedBlob);
            }
        }
        async void Geolocator_PositionChanged(object sender, PositionEventArgs e)
        {
            // Only update the route if we are meant to be recording coordinates
            if (IsRecording)
            {
                var userLocation = e.Position;

                TripPoint previous = null;
                double newDistance = 0;
                if (CurrentTrip.Points.Count > 1)
                {
                    previous = CurrentTrip.Points[CurrentTrip.Points.Count - 1];
                    newDistance = DistanceUtils.CalculateDistance(userLocation.Latitude,
                        userLocation.Longitude, previous.Latitude, previous.Longitude);

                    if (newDistance > 4) // if more than 4 miles then gps is off don't use
                        return;
                }

                var point = new TripPoint
                    {
                        TripId = CurrentTrip.Id,
                        RecordedTimeStamp = DateTime.UtcNow,
                        Latitude = userLocation.Latitude,
                        Longitude = userLocation.Longitude,
                        Sequence = CurrentTrip.Points.Count,
                        Speed = -255,
                        RPM = -255,
                        ShortTermFuelBank = -255,
                        LongTermFuelBank = -255,
                        ThrottlePosition = -255,
                        RelativeThrottlePosition = -255,
                        Runtime = -255,
                        DistanceWithMalfunctionLight = -255,
                        EngineLoad = -255,
                        MassFlowRate = -255,
                        EngineFuelRate = -255,
                        VIN = "-255"
                    };
       
                //Add OBD data
                if (obdDataProcessor != null)
                    point.HasSimulatedOBDData = obdDataProcessor.IsObdDeviceSimulated;
                await AddOBDDataToPoint(point);

                CurrentTrip.Points.Add(point);

                try
                {
                    if (obdDataProcessor != null)
                    {
                        //Push the trip data packaged with the OBD data to the IOT Hub
                        obdDataProcessor.SendTripPointToIOTHub(CurrentTrip.Id, CurrentTrip.UserId, point);
                    }
                }
                catch (Exception ex)
                {
                    Logger.Instance.Report(ex);
                }

                if (CurrentTrip.Points.Count > 1 && previous != null)
                {
                    CurrentTrip.Distance += newDistance;
                    Distance = CurrentTrip.TotalDistanceNoUnits;

                    //calculate gas usage
                    var timeDif1 = point.RecordedTimeStamp - previous.RecordedTimeStamp;
                    CurrentTrip.FuelUsed += fuelConsumptionRate * 0.00002236413 * timeDif1.TotalSeconds;
                    if (CurrentTrip.FuelUsed == 0)
                        FuelConsumption = "N/A";
                    else
                        FuelConsumption = Settings.MetricUnits
                            ? (CurrentTrip.FuelUsed * 3.7854).ToString("N2")
                            : CurrentTrip.FuelUsed.ToString("N2");
                }
                else
                {
                    CurrentTrip.FuelUsed = 0;
                    FuelConsumption = "N/A";
                }

                var timeDif = point.RecordedTimeStamp - CurrentTrip.RecordedTimeStamp;

                //track seconds, minutes, then hours
                if (timeDif.TotalMinutes < 1)
                    ElapsedTime = $"{timeDif.Seconds}s";
                else if (timeDif.TotalHours < 1)
                    ElapsedTime = $"{timeDif.Minutes}m {timeDif.Seconds}s";
                else
                    ElapsedTime = $"{(int)timeDif.TotalHours}h {timeDif.Minutes}m {timeDif.Seconds}s";

                if (point.EngineLoad != -255)
                    EngineLoad = $"{(int)point.EngineLoad}%";

                FuelConsumptionUnits = Settings.MetricUnits ? "Liters" : "Gallons";
                DistanceUnits = Settings.MetricDistance ? "Kilometers" : "Miles";

                OnPropertyChanged("Stats");
            }

            CurrentPosition = e.Position;
        }
        async Task AddOBDDataToPoint(TripPoint point)
        {
            //Read data from the OBD device
            point.HasOBDData = false;
            Dictionary<string, string> obdData = null;

            if (obdDataProcessor != null)
                obdData = await obdDataProcessor.ReadOBDData();

            if (obdData != null)
            {
                double speed = -255,
                    rpm = -255,
                    efr = -255,
                    el = -255,
                    stfb = -255,
                    ltfb = -255,
                    fr = -255,
                    tp = -255,
                    rt = -255,
                    dis = -255,
                    rtp = -255;
                var vin = String.Empty;

                if (obdData.ContainsKey("el") && !string.IsNullOrWhiteSpace(obdData["el"]))
                {
                    if (!double.TryParse(obdData["el"], out el))
                        el = -255;
                }
                if (obdData.ContainsKey("stfb"))
                    double.TryParse(obdData["stfb"], out stfb);
                if (obdData.ContainsKey("ltfb"))
                    double.TryParse(obdData["ltfb"], out ltfb);
                if (obdData.ContainsKey("fr"))
                {
                    double.TryParse(obdData["fr"], out fr);
                    if (fr != -255)
                    {
                        fuelConsumptionRate = fr;
                    }
                }
                if (obdData.ContainsKey("tp"))
                    double.TryParse(obdData["tp"], out tp);
                if (obdData.ContainsKey("rt"))
                    double.TryParse(obdData["rt"], out rt);
                if (obdData.ContainsKey("dis"))
                    double.TryParse(obdData["dis"], out dis);
                if (obdData.ContainsKey("rtp"))
                    double.TryParse(obdData["rtp"], out rtp);
                if (obdData.ContainsKey("spd"))
                    double.TryParse(obdData["spd"], out speed);
                if (obdData.ContainsKey("rpm"))
                    double.TryParse(obdData["rpm"], out rpm);
                if (obdData.ContainsKey("efr") && !string.IsNullOrWhiteSpace(obdData["efr"]))
                {
                    if (!double.TryParse(obdData["efr"], out efr))
                        efr = -255;
                }
                else
                {
                    efr = -255;
                }
                if (obdData.ContainsKey("vin"))
                    vin = obdData["vin"];

                point.EngineLoad = el;
                point.ShortTermFuelBank = stfb;
                point.LongTermFuelBank = ltfb;
                point.MassFlowRate = fr;
                point.ThrottlePosition = tp;
                point.Runtime = rt;
                point.DistanceWithMalfunctionLight = dis;
                point.RelativeThrottlePosition = rtp;
                point.Speed = speed;
                point.RPM = rpm;
                point.EngineFuelRate = efr;
                point.VIN = vin;

                #if DEBUG
                foreach (var kvp in obdData)
                    Logger.Instance.Track($"{kvp.Key} {kvp.Value}");
                #endif

                point.HasOBDData = true;
            }
        }
Пример #4
0
        void UpdateTripStatistics(TripPoint point)
        {
            PastTripsDetailViewModel.CurrentPosition = point;
            labelOneTitle.Text = PastTripsDetailViewModel.FuelConsumptionUnits;
            labelOneValue.Text = PastTripsDetailViewModel.FuelConsumption;

            labelTwoTitle.Text = PastTripsDetailViewModel.DistanceUnits;
            labelTwoValue.Text = PastTripsDetailViewModel.Distance;

            labelThreeTitle.Text = "Elapsed Time";
            labelThreeValue.Text = PastTripsDetailViewModel.ElapsedTime;

            labelFourTitle.Text = PastTripsDetailViewModel.SpeedUnits;
            labelFourValue.Text = PastTripsDetailViewModel.Speed;
        }
        void UpdateMap(TripPoint point, bool updateCamera = true)
        {
            if (map == null)
                return;
            //Get trail position or current potion to move car
            var latlng = point == null
                ? viewModel?.CurrentPosition?.ToLatLng()
                : point.ToLatLng();
            Activity?.RunOnUiThread(() =>
            {
                UpdateCar(latlng);
                driveLine?.Remove();
                var polyOptions = new PolylineOptions();

                if (allPoints == null)
                {
                    allPoints = viewModel.CurrentTrip.Points.ToLatLngs();
                }
                else if (point != null)
                {
                    allPoints.Add(point.ToLatLng());
                }

                polyOptions.Add(allPoints.ToArray());

                if (!driveLineColor.HasValue)
                    driveLineColor = new Color(ContextCompat.GetColor(Activity, Resource.Color.recording_accent));

                polyOptions.InvokeColor(driveLineColor.Value);
                driveLine = map.AddPolyline(polyOptions);
                if (updateCamera)
                    UpdateCamera(latlng);
            });
        }