A STUDY ON THE USAGE OF BLOOD-VOLUME-PRESSURE AS A DRIVER’S MENTAL WORKLOAD EVALUATION TOOL
Author: Ahmad Khushairy MAKHTAR and Makoto ITOH
Abstract: Estimating a driver’s mental workload level is challenging part nowadays. In this study, an experimental investigation was conducted to explore mental workload using Blood-Volume-Pressure (BVP) and Electrocardiogram (ECG) signals. Participants performed two secondary task at two levels of task difficulty and also in two types of traffic conditions. The results show that increasing task difficulty seems to increase Heart rate (HR) and reduce the Heart Rate Variability (HRV) data simultaneously. Especially, data for HR was high when the drivers were performing the most difficult task for mathematical arithmetic task. Results from BVP and ECG also show that they correlate each other showing that BVP can be used as a potential candidate as a mental workload measurement tools. Potential applications of this research include developing a method to estimate driver`s mental workload level through blood volume pressure as the main measurement for evaluation of mental workload as it is non-intrusive to drivers.
Keywords: Driver, Mental Workload, Heart Rate, Heart Rate Variability, Blood Volume Pressure