Awakening degree determining system
First Claim
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1. An awakening degree determining system mounted in a vehicle, the awakening degree determining system comprising:
- a detecting unit that detects at least one of a vehicle behavior and a driving operation of a driver on the vehicle, wherein the driving operation varies the vehicle behavior;
an obtaining unit that obtains a variation state of the detected at least one of the vehicle behavior and the driving operation;
a determining unit that determines decrease in an awakening degree of the driver based on a comparison result between the obtained variation state and a reference;
a preceding vehicle detecting unit that detects a preceding vehicle; and
a changing unit that changes the reference based on whether the preceding vehicle is detected or not.
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Abstract
When a variation amount of a driving operation falls outside of a determining reference, a determining system determines that an awakening degree of a driver is decreased. The determining system changes the determining reference by whether or not a preceding vehicle is existing within a given distance. Therefore, in consideration of peripheral traffic environments such as existence and absence of the preceding vehicle, the awakening degree of the driver is determined, so that determining accuracy of the awakening degree is enhanced more than that of a conventional method.
31 Citations
16 Claims
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1. An awakening degree determining system mounted in a vehicle, the awakening degree determining system comprising:
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a detecting unit that detects at least one of a vehicle behavior and a driving operation of a driver on the vehicle, wherein the driving operation varies the vehicle behavior; an obtaining unit that obtains a variation state of the detected at least one of the vehicle behavior and the driving operation; a determining unit that determines decrease in an awakening degree of the driver based on a comparison result between the obtained variation state and a reference; a preceding vehicle detecting unit that detects a preceding vehicle; and a changing unit that changes the reference based on whether the preceding vehicle is detected or not. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An awakening degree determining system mounted in a vehicle, the awakening degree determining system comprising:
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a detecting unit that detects at least one of a vehicle behavior and a driving operation of a driver on the vehicle, wherein the driving operation varies the vehicle behavior; an obtaining unit that obtains a variation state of the detected at least one of the vehicle behavior and the driving operation; a determining unit that determines decrease in an awakening degree of the driver based on a comparison result between the obtained variation state and a reference; a preceding vehicle detecting unit that detects a preceding vehicle; and a reference setting unit that sets the reference based on the variation state of the at least one of the vehicle behavior and the driving operation, wherein the at least one is detected while the driver actually drives, wherein the reference includes a first reference under a condition where the preceding vehicle is existing and a second reference under a condition where the preceding vehicle is not existing, according to a detection result of the preceding vehicle detecting unit. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An awakening degree determining method used in a vehicle, the awakening degree determining method comprising steps of:
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detecting at least one of a vehicle behavior and a driving operation of a driver on the vehicle, wherein the driving operation varies the vehicle behavior; obtaining a variation state of the detected at least one of the vehicle behavior and the driving operation; determining decrease in an awakening degree of the driver based on a comparison result between the obtained variation state and a reference; and changing the reference based on whether a preceding vehicle is detected or not.
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Specification