Method and apparatus for maintaining alertness of an operator of a manually-operated system
First Claim
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1. A method for maintaining alertness of an operator of a manually-operated system, the method comprising:
- periodically generating an alert signal for response thereto by the operator;
monitoring a first time interval between generation of a first alert signal and receipt of a first response from the operator;
if the monitored first time interval is above a predetermined value, increasing a repetition rate of the alert signal; and
if the monitored first time interval is below the predetermined value;
monitoring a second time interval between generation of a second alert signal and receipt of a second response from the operator; and
if the monitored second time interval is greater than the first monitored time interval;
increasing a repetition rate of the alert signal to a next repetition rate based on the second time interval being greater than the first monitored time interval;
determining, based on vehicle on-board sensors, whether the operator meets a lapse in concentration characteristic after increasing repetition rate of the alert signal to the next repetition rate; and
if the operator meets the lapse in concentration characteristic, further increasing the repetition rate of the alert signal from the next repetition rate to a further repetition rate.
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Abstract
An apparatus for maintaining alertness of an driver of a motor vehicle periodically generates an audible alert signal to which the driver responds by pressing a button on the vehicle'"'"'s steering wheel. The response time of the driver to the signal is monitored and if an increase is detected, the repetition rate of the alert signal is increased. The repetition rate may be further modified by taking into account vehicle driving conditions which may indicate a risk of boredom in the driver.
22 Citations
20 Claims
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1. A method for maintaining alertness of an operator of a manually-operated system, the method comprising:
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periodically generating an alert signal for response thereto by the operator; monitoring a first time interval between generation of a first alert signal and receipt of a first response from the operator; if the monitored first time interval is above a predetermined value, increasing a repetition rate of the alert signal; and if the monitored first time interval is below the predetermined value; monitoring a second time interval between generation of a second alert signal and receipt of a second response from the operator; and if the monitored second time interval is greater than the first monitored time interval; increasing a repetition rate of the alert signal to a next repetition rate based on the second time interval being greater than the first monitored time interval; determining, based on vehicle on-board sensors, whether the operator meets a lapse in concentration characteristic after increasing repetition rate of the alert signal to the next repetition rate; and if the operator meets the lapse in concentration characteristic, further increasing the repetition rate of the alert signal from the next repetition rate to a further repetition rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus to maintain alertness of an operator of a manually-operated system, the apparatus comprising:
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a first module arranged to periodically generate an alert signal for response thereto by the operator; a second module operably coupled to an operator-manipulated input and operably coupled to the first module and arranged to monitor a first time interval between generation of a first alert signal and receipt of a first response from the driver, and to monitor a second time interval between generation of a second alert signal and receipt of a second response from the driver; and a third module operably coupled to the first and second modules, the third module adapted to receive values of monitored first and second time intervals from the second module, determine a first adjusted repetition rate of an alert signal in response to the monitored first time interval being above a predetermined value and convey said first adjusted repetition rate to the first module, and determine a second adjusted repetition rate of an alert signal in response to the monitored second time interval being greater than the monitored first time interval and convey the second adjusted repetition rate to the first module, determine, based on vehicle on-board sensors, whether the operator meets a lapse in concentration characteristic after increasing repetition rate of the alert signal to the next repetition rate, and determine a third adjusted repetition rate of an alert signal in response to the operator meeting the lapse in concentration characteristic. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A tangible computer program product having executable code stored therein for executing a process to perform a method for maintaining alertness of an operator of a manually-operated system, the tangible computer program product comprising code for:
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periodically generating an alert signal for response thereto by the operator; monitoring a first time interval between generation of a first alert signal and receipt of a first response from the operator; if the monitored first time interval is above a predetermined value, increasing a repetition rate of the alert signal; and if the monitored first time interval is below the predetermined value; monitoring a second time interval between generation of a second alert signal and receipt of a second response from the operator; and if the monitored second time interval is greater than the first monitored time interval increasing a repetition rate of the alert signal to a next repetition rate based on the second time interval being greater than the first monitored time interval; determining, based on vehicle on-board sensors, whether the operator meets a lapse in concentration characteristic after increasing repetition rate of the alert signal to the next repetition rate; and if the operator meets the lapse in concentration characteristic, further increasing the repetition rate of the alert signal from the next repetition rate to a further repetition rate.
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Specification