Design And Implementation Of ADAS Road Test Playback System

ADAS(Advanced Driver Assistant System) takes advantage of a variety of sensors installed in the car which can sense surrounding environment, collect and analyze data to forewarn potential dangerous on the road, increasing the driving safety. The forewarning ADAS events mainly include Lane Departure Warning, Forward Collision Warning, Automatic Emergency Braking, Pedestrians Collision Warning and Traffic Sign Recognition. It is necessary to test the reliability of ADAS on the road before use though CAN message data and videos. The paper designs and implements ADAS Road Test Playback System. The system provides parsed and processed data including CAN message data and videos for ADAS researchers when ADAS events happen.The MVC design pattern and modular structure is used in ADAS Road Test Playback System. The author independently designed and implemented the following four modules.(1) Car type and car management module provides the management of car and car type. The system administrator can create, query, edit and delete car or car type. It also provides the management of DBC files related to car type and excel of signal parse rules which make the system suitable for different car types.(2) Event management module provides the functions of event preprocess and video preprocess. The event times of the car selected can be calculated once. The four-way videos begin at 7s before the event time and end at 8s after the event time.(3) Data replay module consists of four submodules. The first module is interlayer signals calculation, it calculates and displays the value of interlayer signals. The second module is parameter calculation, it calculates and displays the value of parameter which is a compound operation result of other signals. The third module is video play, it plays the four-way videos corresponding to the selected event. The last module is data export, interlayer signals, parameters and videos are able to download.(4) Statistical Analysis module can draw the diving route over a period of time, count and display mileage and time information under different road types, different light conditions, different weather conditions and different speeds.System verification results show that the system satisfy the functional requirements of the Beta version. Although the speed of data processing has a certain restriction, it makes researchers easier to analysis and research the ADAS system.