Browse Publications Technical Papers 2018-01-1442
2018-04-03

Accuracy of Speed Data Acquired from Ford Sync Generation 2 and Generation 3 Modules Utilizing the Berla iVe System 2018-01-1442

Since 2007, when the first iPhone was released, the ability to sync smartphone data with vehicle infotainment systems has grown exponentially. Convenience in making calls and sending Short Message Service (SMS) messages from vehicles has been a driving force in the rapid expansion of services available in vehicle infotainment systems, and the data stored within these systems. Modern vehicles generally incorporate the user controls for these systems into touchscreen head units that may also include vehicle navigation services. As a result, the memory in these systems often stores user-supplied infotainment data (e.g., contact lists, call logs, SMS messages, etc.) as well as vehicle-generated telematics data (e.g., locations, track logs, velocity logs, etc.). The Berla iVe System can be used to acquire and analyze historical vehicle GPS location data from Ford Sync Generation 2 and Sync Generation 3 systems. Vehicle speed data is calculated from GPS location and time data. Ford vehicles equipped with Sync Generation 3 systems also capture and record wheel speed data, which provides an additional independent source for vehicle speed information at a higher sample rate. Unlike traditional data from most event data recorders (EDRs), this data is continuously recorded without the need for a crash or other threshold-crossing event.
Vehicle location and speed data were recorded and analyzed in a series of controlled tests in vehicles equipped with Ford Sync Generation 2 (SG2) and Generation 3 (SG3) systems. The vehicles were equipped with external GPS instrumentation to capture data for comparison with the data retrieved with the Berla iVe system. The accuracy of the vehicle speed data was then analyzed for vehicles with both systems under varying operational conditions, including normal driving as well as maximum acceleration and deceleration.

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