Data Processing Method of Finger Blood Pulse for Estimating Human Internal States

Paper #:
  • 980016

Published:
  • 1998-02-23
Citation:
Hashimoto, H. and Katayama, T., "Data Processing Method of Finger Blood Pulse for Estimating Human Internal States," SAE Technical Paper 980016, 1998, https://doi.org/10.4271/980016.
Pages:
6
Abstract:
It was found that the finger blood pulse shows various fluctuations in different driving conditions. The nature of the finger blood pulse fluctuations was used for estimating a driver's internal state. Indexes suitable for expressing the fluctuations were moment and density; these indexes were calculated by using a return-map. However these results were measured by an off-line system and were calculated after the experiment. So, an on-line (real-time) system was needed in order to construct a driver's internal state monitoring system. As a first step, an online system for estimating the human internal state was developed. This system is available for estimating the human internal state every 30 seconds.
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