4-5. Crash data
When a crash is detected by the telematics SDK Damoov platform immediately informs 3rd party platform via notification services. The notification contains overall information about the incident.
Meanwhile, The telematics SDK transfers a high-frequency buffer of crash information.
Buffer frequency:
iOS: 60Hz
Android: 100Hz
Size of the buffer:
5 seconds before the crash and 5 seconds after the crash
Header
{"Id":"b369587a-15ca-4322-95a4-971e88dc48aa",
"Type":"Accident",
"AccidentTrigger":"ACCELERATION_LOW_SPEED_THRESHOLD",
"Reliability":2.497596245457438,
"TimeStart":1632473113173,
"Duration":40996,
"PureDuration":28359.35888671875,
"SpeedStart":0.1039,
"SpeedStop":21.80572194328226,
"SpeedMedian":0.7740738640764255,
"AccelerationLateral":1.0586568693806215,
"AccelerationDirect":0.085728685260066,
"AccelerationVertical":9.019821108595995,
"AccelerationLateralEnd":-0.2214526692969265,
"AccelerationDirectEnd":0.6247857121992172,
"AccelerationVerticalEnd":9.90359047986427,
"PointStart":{"Latitude":60.02471350213658,"Longitude":30.215844040847344},
"PointEnd":{"Latitude":60.02418129538941,"Longitude":30.219847877314415},
"RangeDirect":{"Min":-48.0436,"Max":13.4465,"Median":0.0215,"Quantile_95":2.4294,"Quantile_05":-1.9389},
"RangeVertical":{"Min":-12.9587,"Max":35.6981,"Median":9.8439,"Quantile_95":10.4624,"Quantile_05":8.4513},
"RangeLateral":{"Min":-36.8785,"Max":12.1665,"Median":-0.0078,"Quantile_95":2.7568,"Quantile_05":-0.7967},
"Accuracy":{"Min":3.4062,"Max":3.556,"Median":3.4535,"Quantile_95":3.5052,"Quantile_05":3.4114},
"Speed":{"Min":0,"Max":21.8057,"Median":0.1039,"Quantile_95":20.6837,"Quantile_05":0}}
Header Description
| Object | Description |
|---|---|
| Id | Id of event |
| Type | Type of event |
| AccidentTrigger | Reason of trigger |
| Reliability | |
| TimeStart | Time of event start UTC |
| Duration | Duration of all event points ms |
| PureDuration | Duration of event points with acceleration higher then threshold ms |
| SpeedStart | GPS speed at the beginning of event Comes directly from phone GPS sensor m/s |
| SpeedStop | GPS speed at the end of event Comes directly from phone GPS sensor m/s |
| SpeedMedian | Median GPS speed during the event Comes directly from phone GPS sensor m/s |
| AccelerationLateral | Acceleration at the beginning of event that perpendicular to direction of movement; m/s2 |
| AccelerationDirect | Acceleration at the beginning of event that is aligned with direction of movement; m/s2 |
| AccelerationVertical | Vertical Acceleration at the beginning of event m/s2 |
| AccelerationLateralEnd | Acceleration at the end of event that perpendicular to direction of movement; m/s2 |
| AccelerationDirectEnd | Acceleration at the end of event that is aligned with direction of movement; m/s2 |
| AccelerationVerticalEnd | Vertical Acceleration at the end of event m/s2v |
| PointStart | Coordinates of event start point |
| PointEnd | Coordinates of event end point |
| RangeDirect | Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05 |
| RangeVertical | Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05 |
| RangeLateral | Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05 |
| Accuracy | Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05 |
| Speed | Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05 |
Updated about 3 years ago