Abstract
In this study, we conducted a quantitative evaluation of the comfort of the interior of an electric vehicle (EV) using the brain wave appearance rate, which is part of the human biologic information that the initial stage of the proposed active noise control (ANC) system for ultra-compact EVs reveals. EVs have become easy-to-use mobility solutions and have been researched and actively developed focusing on using music characteristics. We performed fundamental testing of music including 1/f fluctuation for the evaluation of ride comfort based on the relationship between the participant’s heart rate and tempo of music using a driving simulator. The results suggest that if a passenger listened to music including a 1/f fluctuation, then he/she could relax. Thus, it was concluded that if we could pre-grasp the passenger’s biologic information of the heart rate and beats per minute for masking, then the comfort in the interior space could be improved even when using a driving simulator.
Highlights
Ultra-compact electric vehicles (EVs) with a short width and wheelbases, which can accommodate one or two seats, are becoming increasingly popular
Even though there have been studies related to noise reduction in the cabins of ultra-compact EV by using the masking, none of them provides a quantitative evaluation based on biologic information
8 6 participants.11According for to the experimental and more than 3 years of driving experience. This experiment was approved by the Ethics Committee of results, it was revealed that the α wave appearance rate for all participants increased when the road
Summary
Ultra-compact electric vehicles (EVs) with a short width and wheelbases, which can accommodate one or two seats, are becoming increasingly popular. Due to the compactness of the ultra-compact EVs, installation of these devices is difficult This causes the deterioration of the comfort of the vehicle. Nishiura reported a study on the subjective evaluation of comfortability attained using some masking sounds for noise [11]. We focused on the masking that uses sounds such as music to control the road and wind noise in the cabin. Even though there have been studies related to noise reduction in the cabins of ultra-compact EV by using the masking, none of them provides a quantitative evaluation based on biologic information. We used a music to mask the interior noise in ultra-compact EVs and to improve the driver comfortability. For obtaining the biologic information to quantitatively evaluate the comfort attained by masking the interior noise
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