ADAS véhicule autonome

System overview

The latest GPS based position measurement technology is used to provide a highly accurate, easy-to-use ADAS test system. RTK (Real Time Kinematic) option for GPS sensors provides high positioning accuracy (< 2 cm). A static GPS base station sends the GPS correction data over to the moving vehicles.

Two or more vehicles can be connected and observed. Synchronised data from all vehicles provides very accurate position and distance information relative to each other and/or to a fixed object. In addition, DS-IMU2 provides accurate measurement of all vehicle dynamics, including side-slip angle. All data is transferred to a master system which obtains real-time measurement results during the test run.

A robust WLAN solution is used to keep the communication between the vehicles for up to a distance of 1 km. There is theoretically no limit to the number of vehicles within this measurement - only the WLAN bandwidth limitation.

Blind spot detection

In the automotive context, “blind spots” are areas outside of a vehicle that the driver is unable to see. To test and validate such system it’s possible to use our ADAS solution, which provides real-time measurement of more than 10 different objects (vehicles, pedestrians, balloon cars, ...).

To have maximal precision, RTK GPS technology is used for < 2 cm positional accuracy. To get additional information about the effectiveness of the blind spot detection, cameras, Lidar sensors and other analog sensors can be installed inside the vehicle and data acquired with pin-point synchronization.

Adaptive cruise control testing

ACC system is capable of automatically adjusting the speed of a vehicle to match the speed of the vehicle in front of it. ACC systems are also capable of acceleration. It is critical to test systems with different drive maneuvers. Dewesoft ACC test system is reliable, easy to use and time-saving.

The main feature offered is the connectivity of multiple vehicles. More than 10 vehicles can be synchronized and calculated at the same time in real-time. Additionally, the system allows input of Lidar laser scanner (e.g. IBEO Lidar laser scanner) or even development interfaces such as Ethernet, FlexRay, CAN and XCP/CCP. This allows measuring ACC warning signals from the vehicle CAN. Add additional analog/digital inputs and synchronize external distance sensors and video from different cameras.

Additional applications

• Steady-state distance and overtaking from steady state
• Approaching, acceleration and deceleration in convoy
• ISO 15622 with target acquisition range, target discrimination test and curve capability test procedures

Autonomous vehicles

All above features can form the basis for the autonomous driving development. Dewesoft is taking a major role in the Drive Me project which is the world’s first large-scale autonomous driving pilot project by Volvo cars. Cars are being tested on public roads in every day.

Role of DEWESoft in the project

• Provides all the analog data and CAN acquisition hardware via the SIRIUS product line.

• To store and process such huge amount of data, powerful SBOX data loggers are used.

• For receiving highly accurate position (down to 2 cm), velocity and orientation DS-IMU2 with RTK-GPS is used.

• Several DS-CAM-600 color cameras with Full HD resolution and online compression are used to record the behavior of other vehicles and pedestrians.

All the above systems are synchronized together with GPS-PPS sync technology which provides synchronization accuracy down to microseconds. Volvo chooses Dewesoft because it's the only vendor that can offer combined acquisition of so many devices and biometrical data into a single integrated solution.