Internet radio, GPS, vehicle apps, smartphone connections to the vehicle: Networking of vehicles is no longer a vision but has become reality. As a leading development services provider, FEV has supported these developments from their formative stages and has developed unique expertise from both the development and the implementation standpoint. We have developed the “Telematics System Tester” (FEV TST) which has become an important tool for integrating and validating increasingly complex telematics systems, even when used in the very early development stages. This test system enables the simulation of relevant signals and data in a controlled environment as well as the ability to replay recorded scenarios. After successfully completing several series-production validation projects with connected vehicles, the project results indicate that the FEV TST is able to reduce time and effort by up to 30 percent, which is especially relevant in the context of shortening innovation cycles.
“In today’s networked vehicle and certainly tomorrow’s vehicles, the Internet, or the Internet of Things and the car will be one and will offer a wide range of additional applications for the driver and the vehicle manufacturers”, explained Dr. Thomas Hülshorst, Vice President Electronics und Electrification at FEV. “Various consumer electronics products and information from various sources both inside and outside are used in this context.” For this reason, telematics systems need to be validated on an “end-to-end” basis, where the vehicle is only one part of the system. In addition to the “standard or traditional” vehicle functions, all of the other services and communication structures must also be considered during the validation phase. “A system validation that meets all these demands can only be tackled successfully through the use of automated test systems,” resumed Hülshorst.
Complex telematics Systems
The FEV test system makes it possible to simulate relevant signals and data in a controlled environment or to replay recorded scenarios. These signals include the cellular network, GPS, Bluetooth, and WiFi and the simulation of Smartphone apps as well as connection to the Internet for backend services, which are necessary in order to develop the required use cases for the telematics system and used for end-to-end testing. In addition, the FEV TST can simulate different scenarios for mobile network and GPS signals. For example, the influence of weak or bounced satellite signals can already be assessed in the laboratory. “With FEV TST the telematics system under test can be validated easily and in a short amount of time against hundreds of different scenarios and evaluated,” outlined Hülshorst. “An additional back-off ice application maps a simulated chain of information – for example, the data flow of a door opening command from the smartphone, over the back-end, to the vehicle’s telematics unit and the vehicle’s CAN bus.”
Current telematics systems usually consist of between three and ten different components, usually from different suppliers. Frequently, not all of these components are available at the same time during the development phase for integration and validation testing. The FEV TST can be included from the beginning in the process to support the development eff ort as well as test and validation. The FEV TST can be configured so that it closely simulates the real system.