Huang, Y., Wang, W., Fang, C., Murphey, Y. et al., "In-Vehicle Driver State Detection Using TIP-II," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 7(1):221-229, 2014, doi:10.4271/2014-01-0444.
A transportable instrumentation package to collect driver, vehicle and environmental data is described. This system is an improvement on an earlier system and is called TIP-II . Two new modules were designed and added to the original system: a new and improved physiological signal module (PH-M) replaced the original physiological signals module in TIP, and a new hand pressure on steering wheel module (HP-M) was added. This paper reports on exploratory tests with TIP-II. Driving data were collected from ten driver participants. Correlations between On-Board-Diagnostics (OBD), video data, physiological data and specific driver behavior such as lane departure and car following were investigated. Initial analysis suggested that hand pressure, skin conductance level, and respiration rate were key indicators of lane departure lateral displacement and velocity, immediately preceding lane departure; heart rate and inter-beat interval were affected during lane changes. Correlation analyses of car-following data are ongoing.