Saferider: CAN based architecture on 2-wheelers domain

This paper will present a new concept of CAN-based (Controller Area Network) architecture developed within the SAFERIDER 7 FP (Framework Program) project. The project aims to improve the comfort and safety of riders in the 2-wheelers domain introducing new functionalities on board. These functionalities are classified as OBIS (On-Board Information System) and ARAS (Advanced Riding Assistance System) and are supported by a multi-points high speed CAN installed in the vehicle. In details, the OBIS developed in SAFERIDER collects 4 functionalities, namely eCall, Tele-diagnostic System, Navigation and Route Guidance System, Weather Traffic and Black Spot Warning. Respectively, ARAS collects 4 functionalities, namely Speed Alert Functionality (SAF), Frontal Collision Warning (FCW), Curve Warning (CW), Intersection Support (IS) and Lane Change Support (LCS). The aim of the architecture is to set from the very beginning a common framework for ARAS and OBIS functionalities integration in terms of sensors, actuators, positioning on the PTW and HMI (Human Machine Interface) elements and strategies. On logical side, the CAN-based architecture of SAFERIDER is created on the basis of the three-layer Information Processing Approach developed in PReVENT (6 FP, www.preventip.org), that comprehends the following layers: Perception-Decision-Action. Based on this approach, overall information flow are described from input generated by the sensors to the feedback delivered to the rider. Basically, an architecture developed for a rider assistance system, consists of three parts: the perception level, which is the responsible for the environment and PTW dynamic status perception, the decision and the action level, which are responsible for taking and executing actions. On HW (HardWare) side, several modules are integrated within a unique multi-nodes CAN bus, covering the functionalities described before. The communications among them follows a common CAN database developed so far during the project in which are collected all the information details exchanged among modules. Between the several innovation of the SAFERIDER, one of the most important is the fact that it is the first project that considers the introduction of ARAS and OBIS functionalities, based on the integration of several module on PTWs via a CAN network connection.