Development of audible signal control system for electric vehicle as pedestrian detection

Abstract

This paper describes and discusses the development of the control system to produce engine sound as audible information for pedestrian to detect the Electric Vehicle (EV) presence instead of alarm type noise. EV produces less noise when travels at low speed condition and can bring unexpected accident to the road user. Various alarms were introduced by the car manufacturers to prevent this problem but the implementation of this system has brought some inconveniences to the EV user since EV is known for its calm and quiet. The engine sound that will be the output of the control system must meet the International Standard Organization (ISO) standard as minimum noise emitted from the vehicle and also as cue sound for pedestrian detection. The introduction of engine sound in EV at the low speed manoeuver is expected to resolve the safety issues among pedestrian and at the same time maintain the EV quality to its user.