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US 9,845,097 B2Granted
Driver attention evaluation
AssigneeFord Global Technologies, LLC
InventorsKwaku O. Prakah-Asante, Hsin-hsiang Yang
Life of this patent
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Abstract
A driver evaluation system for a vehicle generates for display a parameter indicative of a driver's level of attention to driving the vehicle for a temporal period based on a complement of a weighted average of a plurality of counts. Some of the counts represent a number of interaction events between the driver and an infotainment system in the vehicle during the temporal period.
Claims17
A driver evaluation system for a vehicle comprising:
- a controller programmed to generate for display a parameter indicative of a driver's level of attention to driving the vehicle for a sliding window time period based on a complement of a weighted average of a plurality of counts at least some of which represent a number of interaction events between the driver and an infotainment system in the vehicle during the time period.
A driver evaluation method comprising:
- by a controller,
- accumulating a driver inattention event count such that, in response to occurrence of an inattention event and a count timer exceeding a limit, the count timer is decreased according to a difference between the count timer and a quotient of the limit and the count, and
- displaying a driver attention state value that is based on a complement of a weighted average that includes the count.
A vehicle comprising:
- an interface;
- and
- one or more controllers programmed to,
- in response to a driver attention request, generate for display via the interface a parameter indicative of a driver's level of attention to driving the vehicle for a selected time period based on a complement of a weighted average, having a value between zero and one, of a plurality of counts at least some of which represent a number of interaction events between the driver and an infotainment system in the vehicle during the selected time period, and
- accumulate one of the counts such that, in response to occurrence of an interaction event, the one of the counts being greater than zero, and a value of a count timer exceeding a predefined time limit, the value is decreased according to a difference between the count timer and a quotient of the predefined time limit and the one of the counts.
2 more elements
Dependencies are inferred from the claim text.