Smartphone-Based Vehicle-to-Driver/Environment Interaction System for Motorcycles

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INTRODUCTION

THE object of this letter is to present an interaction system
implementing a vehicle-to-driver communication and a
vehicle-to-environment communication based on a smartphone
core and a wireless Bluetooth medium (in the rest of the letter
this is indicated as VEDE system). The system is targeted to increase
the safety level of a motorcycle.


SYSTEM ARCHITECTURE AND HARDWARE

The prototype VEDE system consists of the following elements
(see Fig. 1).
• A motorcycle natively equipped with a vehicle control unit
(VCU), which collects the data from the vehicle, controls
the engine, and displays the relevant information on the
dashboard. The information is broadcasted over a standard
CAN bus between the electronic subsystems in the
vehicle [13].
• An embedded electronic unit interfaced to the CAN bus of
the vehicle, and capable of collecting optional analog and
digital signals. The electronic board includes a Bluetooth
transceiver.


. Embedded Electronic Unit for the CAN-Bluetooth Gateway

The in-vehicle embedded electronic system acts as a gateway
between the CAN bus and the Bluetooth channel (in the rest of
the letter this is indicated as simply gateway). It also may acquire
some additional analog and digital data from the vehicle.



. SOFTWARE ARCHITECTURE

In order to implement the VEDE system, each layer of hardware,
as presented in the previous section, needs to be complemented
by a corresponding layer of software.
The software architecture is represented in Fig. 4, which depicts
each of the hardware subsystems, and the software interface
between them. For the sake of conciseness, Fig. 4 focuses
on the driver-to-motorcycle interaction. Notice that this kind
of interaction is the most critical due to the presence of audio
commands.