Data collection

Run the application for data collection with npm run start.

Example of telemetry Data

Telemetry data is collected locally, while the server is running, and stored in data/telemetry.json. Minor processing such as multiplication and averaging happens before the data is stored locally.

When data collection has completed and the server is being shutdown with Ctrl+C, all data from the telemetry.json is sent to the MongoDB database. Timestamps from the stored data are reformatted from Int64 to BSON UTC Date Value before being sent to MongoDB. Here are examples of telemetry data collected and stored:

Collected data (stored in local file)

{
  "timestamp": 12949125000,
  "currentEngineRpm": 6312.5166015625,
  "speed": 24.725961685180664,
  "throttlePercent": 100,
  "brake": 0,
  "gear": 1,
  "steering": 0,
  "drivingLine": 49,
  "numWheelsOnRumbleStrip": 0,
  "grip": {
    "avgSlipRatio": 0.2009285787353292,
    "avgSlipAngle": 0.0003704243181346101,
    "avgCombinedSlip": 0.20811021188274026
  },
  "geometry": {
    "accelerationX": -0.013900518417358398,
    "accelerationY": -0.12439142167568207,
    "velocityX": 0.0006532669067382812,
    "velocityY": 0.007553219795227051
  },
  "currentLap": 1,
  "lapInfo": {
    "distanceTraveled": -0.2050597071647644,
    "segment": 0,
    "bestLapTime": 0,
    "lastLapTime": 0,
    "currentLapTime": 0.46666669845581055
  }
}

Data stored in database

{
  "_id": {
    "$oid": "67210dc2cb537e1d7ba02584"
  },
  "timestamp": {
    "$date": "1970-05-30T20:58:45.000Z"
  },
  "currentEngineRpm": 6312.5166015625,
  "speed": 24.725961685180664,
  "throttlePercent": 100,
  "brake": 0,
  "gear": 1,
  "steering": 0,
  "drivingLine": 49,
  "numWheelsOnRumbleStrip": 0,
  "currentLap": 1,
  "grip": {
    "avgSlipRatio": 0.2009285787353292,
    "avgSlipAngle": 0.0003704243181346101,
    "avgCombinedSlip": 0.20811021188274026,
    "_id": {
      "$oid": "67210dc2cb537e1d7ba02585"
    }
  },
  "geometry": {
    "accelerationX": -0.013900518417358398,
    "accelerationY": -0.12439142167568207,
    "velocityX": 0.0006532669067382812,
    "velocityY": 0.007553219795227051,
    "_id": {
      "$oid": "67210dc2cb537e1d7ba02586"
    }
  },
  "lapInfo": {
    "distanceTraveled": -0.2050597071647644,
    "segment": 0,
    "bestLapTime": 0,
    "lastLapTime": 0,
    "currentLapTime": 0.46666669845581055,
    "_id": {
      "$oid": "67210dc2cb537e1d7ba02587"
    }
  },
  "__v": 0
}