Driver's physical condition detection device and method
AssigneeMazda Motor Corporation
InventorsYouichiro Nakahata, Yohei Iwashita, Junichiro Kuwahara, Ryohei Hisamitsu
Life of this patent
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Abstract
A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle includes a vehicle detector configured to detect a change in motion of the vehicle during driving, a driver detector configured to detect a change in motion of a head of the driver, and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the change in motion of the head of the driver with respect to the change in motion of the vehicle during driving.
Claims5
A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle, comprising:
- a frequency analyzer configured to perform frequency analysis with respect to time data to calculate frequency data;
- a vehicle detector configured to detect a change in motion of the vehicle during driving;
- a driver detector configured to detect an acceleration of a head of the driver;
- and
- a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, wherein
- the frequency analyzer performs frequency analysis with respect to time data of the acceleration of the head of the driver to calculate frequency data of a power spectral density, and
- the physical condition determination portion determines that the physical condition of the driver is deteriorated when a maximum value of the frequency data of the power spectral density is larger than a reference value, the reference value being associated with the detected change in motion of the vehicle during driving.
A driver's physical condition detection method for use in a driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle, comprising:
- a frequency analyzing step of performing frequency analysis with respect to time data to calculate frequency data;
- a vehicle detecting step of detecting an acceleration of the vehicle during driving;
- a driver detecting step of detecting an acceleration of a head of the driver;
- and
- a physical condition determining step of performing a determination process of determining whether or not the physical condition of the driver is deteriorated, wherein
- the frequency analyzing step performs frequency analysis with respect to time data of the acceleration of the head of the driver to calculate frequency data of a power spectral density, and
- the physical condition determining step determines that the physical condition of the driver is deteriorated when a maximum value of the frequency data of the power spectral density is larger than a reference value, the reference value being associated with the detected acceleration of the vehicle during driving.
Dependencies are inferred from the claim text.