Alerting system of a vehicle deviating from its traffic lane
OwnerChi-Jui Huanginventor
Life of this patent
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Abstract
An alerting system of a vehicle deviating from its traffic lane on a highway or road is disclosed. It includes at least one left-side determining device, at least one right-side determining device and a warning device. For each side, its light intensity detector obtains a light intensity signal function first. A light intensity variation judging module makes a judge. Aft, it utilizes a misjudging preventing module to avoid the misjudging before sending out a warning signal that can activate a warning action. The advantages and functions of this invention includes having a changeable judging base depending on its environment, lowering the possibility of misjudging caused by shadow, and having several post-processing steps.
Claims10
An alerting system of a vehicle deviating from its traffic lane, said vehicle having a front edge, a rear edge, a left edge and a right edge, said alerting system comprising:
- at least one left-side determining device, each left-side determining device including:
- [a] a first light intensity detector for detecting a light intensity of a first zone and converting into a first light intensity signal so as to obtain a first light intensity signal function when a time passes;
- [b] a first light intensity variation judging module for reading said first light intensity signal function and outputting a first variation signal within a preset time, if a condition that said first light intensity signal function varying over a first variation limit being true, then an output of said first variation signal being ON, otherwise an output of said first variation signal being OFF;
- [c] a first misjudging preventing module for reading said first variation signal and output a left-side deviation signal, if said first variation signal keeping ON longer than a first comparison time, then an output of said left-side deviation signal being ON, otherwise an output of said left-side deviation signal being OFF;
- at least one right-side determining device, each right-side determining device including:
- [a] a second light intensity detector for detecting a light intensity of a second zone and converting into a second light intensity signal so as to obtain a second light intensity signal function when a time passes;
- [b] a second light intensity variation judging module for reading said second light intensity signal function and outputting a second variation signal within a preset time, if a condition that said second light intensity signal function varying over a second variation limit being true, then an output of said second variation signal being ON, otherwise an output of said second variation signal being OFF;
- [c] a second misjudging preventing module for reading said second variation signal and output a right-side deviation signal, if said second variation signal keeping ON longer than a second comparison time, then an output of said right-side deviation signal being ON, otherwise an output of said right-side deviation signal being OFF;
- a warning device to output a warning signal to activate a warning action when one of said left-side deviation signal and right-side deviation signal is received.
Dependencies are inferred from the claim text.