Driving characteristics estimating device and drive assisting system
First Claim
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1. A driving characteristics estimating device comprising:
- an operation start index value calculating unit configured to calculate one or more index values indicating respective start timings of a predetermined operation performed by a driver of a vehicle; and
a driving characteristics estimating unit configured torefer to probability density functions obtained for each of a plurality of state groups that are determined based on the start timings of the predetermined operation, the probability density functions obtained by classifying the index values into the state groups and calculated based on the index values classified into the respective state groups,obtain relationships between the probability density functions and respective index values,calculate values on the probability density functions of the state groups, the values corresponding to one of the index values calculated by the operation start index value calculating unit,calculate ratios of the values relative to a sum of the values,weight the ratios, andcalculate a sum of the weighted ratios as an estimated value indicating driving characteristics of the driver.
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Abstract
To provide an operation start index value calculating unit for calculating index values of operation start times according to operation contents of a driver who drives a vehicle, and a driving characteristics estimating unit for determining ratios of probability densities to total value thereof in respective probability density functions in the calculated index values, based on the respective probability density functions of every state of the operation start times to the index values of the operation start times and on the index values of the operation start times calculated by the operation start index value calculating unit, and for estimating the driving characteristics of the driver by weighting the ratios to the total values of the respective probability densities.
7 Citations
16 Claims
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1. A driving characteristics estimating device comprising:
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an operation start index value calculating unit configured to calculate one or more index values indicating respective start timings of a predetermined operation performed by a driver of a vehicle; and a driving characteristics estimating unit configured to refer to probability density functions obtained for each of a plurality of state groups that are determined based on the start timings of the predetermined operation, the probability density functions obtained by classifying the index values into the state groups and calculated based on the index values classified into the respective state groups, obtain relationships between the probability density functions and respective index values, calculate values on the probability density functions of the state groups, the values corresponding to one of the index values calculated by the operation start index value calculating unit, calculate ratios of the values relative to a sum of the values, weight the ratios, and calculate a sum of the weighted ratios as an estimated value indicating driving characteristics of the driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A drive assisting system comprising:
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an operation start index value calculating unit configured to calculate one or more index values indicating respective start timings of a predetermined operation performed by a driver of a vehicle; a driving characteristics estimating unit configured to refer to probability density functions obtained for each of a plurality of state groups that are determined based on the start timings of the predetermined operation, the probability density functions obtained by classifying the index values into the state groups and calculated based on the index values classified into the respective state groups, obtain relationships between the probability density functions and respective index values, calculate values on the probability density functions of the state groups, the values corresponding to one of the index values calculated by the operation start index value calculating unit, calculate ratios of the values relative to a sum of the values, weight the ratios, and calculate a sum of the weighted ratios as an estimated value indicating driving characteristics of the driver; and a drive assisting controller configured to carry out a drive assisting according to the estimated value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification
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Current AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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Original AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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InventorsAoki, Hirofumi
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Primary Examiner(s)Thai, Xuan M
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Assistant Examiner(s)Zaman, Sadaruz
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Application NumberUS14/405,537Publication NumberTime in Patent Office2,765 DaysField of Search434 62US Class CurrentCPC Class CodesB60W 2540/12 Brake pedal positionB60W 2540/30 Driving styleB60W 40/09 Driving style or behaviourG08G 1/166 for active traffic, e.g. mo...G08G 1/167 Driving aids for lane monit...
