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


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