SYSTEM AND METHOD FOR ESTABLISHING ACOUSTIC METRICS TO DETECT DRIVER IMPAIRMENT
First Claim
1. An apparatus for detecting an impairment state of a driver in a vehicle, the apparatus comprising:
- a vehicle interface device configured to;
receive a first audible signal from a driver indicative of at least one word while the driver is in a non-impaired state;
determine a first total time to recite the at least one word based on the first audible signal;
command the driver to recite the at least one word within a predetermined time frame to determine the impairment state of the driver;
receive a second audible signal from the driver indicative of the at least one word within the predetermined time frame;
determine a second total time to recite the at least one word based on the second audible signal; and
compare the first total time to the second total time to determine if the driver is in the impaired state.
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Accused Products
Abstract
An apparatus for detecting an impairment state of a driver in a vehicle is provided. The apparatus comprises a vehicle interface device configured to receive a first audible signal from a driver indicative of at least one word while the driver is in a non-impaired state and to determine a first total time to recite the at least the word based on the first audible signal. The vehicle interface device is further configured to command the driver to recite the at least one word to determine the impairment state of the driver and to receive a second audible signal from the driver indicative of the at least one word. The vehicle interface device is further configured to determine a second total time to recite the at least one word based on the second audible signal and to compare the first total time to the second total time.
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Citations
20 Claims
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1. An apparatus for detecting an impairment state of a driver in a vehicle, the apparatus comprising:
a vehicle interface device configured to; receive a first audible signal from a driver indicative of at least one word while the driver is in a non-impaired state; determine a first total time to recite the at least one word based on the first audible signal; command the driver to recite the at least one word within a predetermined time frame to determine the impairment state of the driver; receive a second audible signal from the driver indicative of the at least one word within the predetermined time frame; determine a second total time to recite the at least one word based on the second audible signal; and compare the first total time to the second total time to determine if the driver is in the impaired state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting an impairment state of a driver in a vehicle, the method comprising:
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electronically receiving a first audible signal from a driver indicative of at least one word while the driver is in a non-impaired state; determining, at a vehicle interface device, a first total time to recite the at least one word based on the first audible signal; electronically commanding the driver to recite the at least one word within a predetermined time frame to determine the impairment state of the driver; receiving a second audible signal from the driver indicative of the at least one word within the predetermined time frame; determining, at the vehicle interface device, a second total time to recite the at least one word based on the second audible signal; and comparing the first total time to the second total time to determine if the driver is in the impaired state. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
a vehicle interface device configured to; receive a first audible signal from a driver indicative of a phrase while in a non-impaired state; command the driver to provide a second audible signal indicative of the phrase within a predetermined time to determine an impairment state for the driver; and determine that the driver is in the impaired state if the second audible signal has not been received within the predetermined time. - View Dependent Claims (18, 19, 20)
Specification