Doze prevention system
First Claim
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1. A doze prevention system comprising:
- eyeblink sensor means for generating a waveform of eyeblink activity of an operator;
eyeblink detecting means connected to said eyeblink sensor means for detecting eyeblink pulses in said waveform and for extracting at least one inherent attribute of each eyeblink pulse as a parameter;
awake-state pattern generating means responsive to said eyeblink detecting means detecting a plurality of eyeblink pulses during an awake-state period for determining and recording an awake-state parameter pattern from the extracted parameters of the awake-state plurality of eyelink pulses;
deviation determining means responsive to said eyeblink detecting means detecting an eyeblink pulse during a monitor-for-doze period after the awake-state period for determining a deviation of the extracted parameter of the monitor-for-doze eyeblink pulse from the awake-state parameter pattern to generate an output; and
alert means connected to said deviation determining means for producing an alarm signal in response to the output of said deviation determining means.
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Abstract
A system for alerting a worker who is falling into a doze records a parameter pattern or range derived from a plurality of eyeblink pulses in a waveform generated during an awake-state period, and then determines excessive deviation of parameters of each succeeding eyeblink pulse from the recorded pattern to generate an alarm signal.
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Citations
5 Claims
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1. A doze prevention system comprising:
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eyeblink sensor means for generating a waveform of eyeblink activity of an operator; eyeblink detecting means connected to said eyeblink sensor means for detecting eyeblink pulses in said waveform and for extracting at least one inherent attribute of each eyeblink pulse as a parameter; awake-state pattern generating means responsive to said eyeblink detecting means detecting a plurality of eyeblink pulses during an awake-state period for determining and recording an awake-state parameter pattern from the extracted parameters of the awake-state plurality of eyelink pulses; deviation determining means responsive to said eyeblink detecting means detecting an eyeblink pulse during a monitor-for-doze period after the awake-state period for determining a deviation of the extracted parameter of the monitor-for-doze eyeblink pulse from the awake-state parameter pattern to generate an output; and alert means connected to said deviation determining means for producing an alarm signal in response to the output of said deviation determining means. - View Dependent Claims (2, 3, 4, 5)
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Specification