Method and system for inferring the behavior or state of the driver of a vehicle, use of the method and computer program for carrying out the method
First Claim
1. A method for inferring the behavior or state of the driver of a vehicle with the aid of an autonomous computation device located in the vehicle, integrating sensors that can report on the motion and operating state of the vehicle, wherein said sensors are inertial sensors comprising accelerometers and/or gyroscopes, and the method comprises:
- a) processing at least part of the information from one or several of said inertial sensors of said autonomous computation device, one by one or in combination, to make an evaluation of at least one descriptive function of an interaction or behavior of the driver with the vehicle over time, in each phase of a trajectory and for a specific road; and
b) inferring said behavior or state by comparing the evaluation of said at least one descriptive function, or at least a value thereof, with reference information associated with a behavior of the driver that is considered normal for the specific road, said reference information being stored in at least one memory of said autonomous computation device, or in a remote device or database,wherein said reference information comprises reference values obtained by evaluating said at least one descriptive function, in characterization periods and in zones in which specific conditions relating to the speed of the vehicle and/or radius of curvature are met, said method comprising performing the comparison of said step b) of the evaluation of said descriptive function in step a) and said reference values.
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Accused Products
Abstract
The invention relates to a method and system for inferring the behavior or state of the driver of a vehicle, use of the method and computer program for carrying out the method
The method comprises evaluating a series of descriptive functions of the conditions of interaction of the driver with the vehicle based at least on information from inertial sensors of an autonomous computation device, by comparing such evaluation with reference information associated with a behavior of the driver that is considered normal.
The system is suitable for implementing the method of the invention.
The use is for detecting behavioral changes of a driver.
The computer program is suitable for performing the steps of the method of the invention.
16 Citations
24 Claims
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1. A method for inferring the behavior or state of the driver of a vehicle with the aid of an autonomous computation device located in the vehicle, integrating sensors that can report on the motion and operating state of the vehicle, wherein said sensors are inertial sensors comprising accelerometers and/or gyroscopes, and the method comprises:
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a) processing at least part of the information from one or several of said inertial sensors of said autonomous computation device, one by one or in combination, to make an evaluation of at least one descriptive function of an interaction or behavior of the driver with the vehicle over time, in each phase of a trajectory and for a specific road; and b) inferring said behavior or state by comparing the evaluation of said at least one descriptive function, or at least a value thereof, with reference information associated with a behavior of the driver that is considered normal for the specific road, said reference information being stored in at least one memory of said autonomous computation device, or in a remote device or database, wherein said reference information comprises reference values obtained by evaluating said at least one descriptive function, in characterization periods and in zones in which specific conditions relating to the speed of the vehicle and/or radius of curvature are met, said method comprising performing the comparison of said step b) of the evaluation of said descriptive function in step a) and said reference values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for inferring the behavior of the driver of a vehicle, comprising an autonomous computation device arranged in the vehicle with:
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processing means (E); internal sensors (Si1-Si14) connected with said processing means (E) and arranged to detect the state of the vehicle and to supply information relating to said state of the vehicle to said processing means (E); and at least one physiological sensor (Sbs, Sbc) associated with the driver of the vehicle, intended for detecting a physiological state of the driver and supplying information relating to said physiological state to said autonomous computation device (D), and in that said autonomous computation device (D) and said at least one physiological sensor (Sbs, Sbc), or an electronic system connected thereto, have wireless communication capacity, said at least one physiological sensor (Sbs, Sbc), or said electronic system connected thereto, being intended for wirelessly supplying said information relating to said physiological state to said autonomous computation device (D), the system wherein; said autonomous computation device (D) comprises a memory (M) where at least reference information relating to states of the vehicle associated with a behavior of the driver that is considered normal is recorded; said processing means (E) are communicated with said memory (M) to access said reference information, and they implement a method for inferring the behavior or state of the driver of a vehicle with the aid of an autonomous computation device located in the vehicle, integrating sensors that can report on the motion and operating state of the vehicle, wherein said sensors are inertial sensors comprising accelerometers and/or gyroscopes, and the method comprises; a) processing at least part of the information from one or several of said inertial sensors of said autonomous computation device, one by one or in combination, to make an evaluation of at least one descriptive function of the interaction or behavior of the driver with the vehicle over time, in each phase of a trajectory and for a specific road; and b) inferring said behavior or state by comparing the evaluation of said at least one descriptive function, or at least a value thereof, with reference information associated with a behavior of the driver that is considered normal for the specific road, said reference information being stored in at least one memory of said autonomous computation device, or in a remote device or database.
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24. A non-transitory tangible computer program product comprising:
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computer program code means suitable for performing the steps of a method for inferring behavior or state of a driver of a vehicle with aid of an autonomous computation device located in the vehicle; integrating sensors that can report on the motion and operating state of the vehicle, wherein said sensors are inertial sensors comprising accelerometers and/or gyroscopes, and the method comprises; a) processing at least part of the information from one or several of said inertial sensors of said autonomous computation device, one by one or in combination, to make an evaluation at least one descriptive function of the interaction or behavior of a driver with the vehicle over time, in each phase of a trajectory and for a specific road; and b) inferring said behavior or state by comparing the evaluation of said at least one descriptive function, or at least a value thereof, with reference information associated with a behavior of the driver that is considered normal for the specific road, said reference information being stored in at least one memory of said autonomous computation device, or in a remote device or database, said steps including said evaluation of the at least one descriptive function of an interaction of the driver with the vehicle, in each phase of a trajectory, and treatment of the information about the physiological state of the driver and said determination of the behavior or state of the driver of the vehicle when the aforementioned program is run in a computer, a digital signal processor, an application-specific integrated circuit, a microprocessor, a microcontroller or programmable hardware.
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Specification