COGNITIVE ALERTER
A system and method for ensuring that an operator remain alert includes monitoring the operator to determine when the operator is actively working the train controls, and, when the operator has not actively worked the controls for a first period of time, displaying a sequence the repetition of which requires cognitive alertness of the operator. If the operator fails to repeat the sequence, or a corresponding sequence, the train is stopped. In some embodiments, the cognitive alerter is inoperative below predetermined speed levels.
1 . A computerized method for ensuring that an operator remains alert during operation of a train comprising the steps of:
(a) monitoring at least one train control device to determine whether the operator is operating the train control device;
(b) if the operator has not operated the train control device within a first time period, displaying at least one sequence to an operator on a display device;
(c) determining whether the operator has entered a corresponding sequence within a second time period; and
(d) stopping the train if the operator fails to enter the corresponding sequence within the second time period.
2 . The method of claim 1 , further comprising the steps of:
setting a third time period;
displaying to the operator an indication that the third time period has started prior to displaying the at least one sequence to the operator; and
if the operator has pressed a reset button during the third time period, repeating step (a).
3 . The method of claim 1 , wherein the first time period is fixed.
4 . The method of claim 1 , wherein the first time period is randomly chosen.
5 . The method of claim 1 , wherein the sequence is an alphanumeric sequence.
6 . The method of claim 1 , further comprising the step of sounding an audible alarm at a start of the second time period.
7 . The method of claim 1 , further comprising the step of sounding an audible alarm if the operator fails to enter the corresponding sequence within the second time period.
8 . The method of claim 1 , wherein the train is stopped with a penalty brake application.
9 . The method of claim 1 , wherein steps (b), (e) and (d) are skipped when a speed of the train is less than a predetermined threshold.
10 . A system for ensuring that an operator remains alert during operation of a train, the system comprising:
a processor;
at least one sensor connected to the processor;
a display connected to the processor;
an input device connected to the processor; and
a brake interface connected to the processor;
wherein the processor is configured to perform the steps of
(a) monitoring the at least one sensor to determine whether the operator is operating the train control device;
(b) if the operator has not operated the train control device within a first time period, displaying at least one sequence to an operator on the display,
(c) determining whether the operator has entered on the input device a corresponding sequence within a second time period; and
(d) commanding the brake interface to stop the train if the operator fails to enter the corresponding sequence within the second time period.
11 . The system of claim 10 , further comprising the steps of:
setting a third time period;
displaying to the operator an indication that the third time period has started prior to displaying the at least one sequence to the operator; and
if the operator has pressed a reset button during the third time period, repeating step (a).
12 . The system of claim 10 , wherein the first time period is fixed.
13 . The system of claim 10 , wherein the first time period is randomly chosen.
14 . The system of claim 10 , wherein the sequence is an alphanumeric sequence.
15 . The system of claim 10 , further comprising the step of sounding an audible alarm at a start of the second time period.
16 . The system of claim 10 , further comprising the step of sounding an audible alarm if the operator fails to enter the corresponding sequence within the second time period.
17 . The system of claim 10 , wherein the train is stopped with a penalty brake application.
18 . The system of claim 10 , wherein steps (b), (c) and (d) are skipped when a speed of the train is less than a predetermined threshold.