Vehicle recognition allowing device
First Claim
1. A vehicle recognition allowing device operating in an environment to recognize the presence or the non-presence of a vehicle, the vehicle recognition allowing device comprising:
- an infrared ray marker;
a detecting routine which detects a traveling state of the vehicle; and
a drive circuit which allows the infrared ray marker to emit light with a pattern in response to a detection result of the detecting routine.
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Abstract
A vehicle recognition allowing device is provided which allows the recognition of a traveling state of a vehicle, including a two-wheeled vehicle to be recognized and does not require a sophisticated image processing function. When a change in the speed, traveling state or both of the vehicle is detected by a traveling state detecting part, flickering frequencies of respective infrared ray markers are increased or decreased to a frequency corresponding to the change in speed, traveling state or both. Alternatively, flickering duty ratios of the respective infrared ray markers can be changed to a duty ratio corresponding to the new speed, traveling state or both.
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Citations
20 Claims
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1. A vehicle recognition allowing device operating in an environment to recognize the presence or the non-presence of a vehicle, the vehicle recognition allowing device comprising:
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an infrared ray marker;
a detecting routine which detects a traveling state of the vehicle; and
a drive circuit which allows the infrared ray marker to emit light with a pattern in response to a detection result of the detecting routine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification