WARNING METHOD AND DEVICE
A warning device includes a lighting unit, an image capturing unit and a processing unit. The lighting unit is configured for generating at least one light spot. The image capturing unit is configured for capturing and recording a series of images of the light spot in time sequence. The processing u...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A warning device includes a lighting unit, an image capturing unit and a processing unit. The lighting unit is configured for generating at least one light spot. The image capturing unit is configured for capturing and recording a series of images of the light spot in time sequence. The processing unit is coupled to the image capturing unit for analyzing a position of the light spot in each of the images, computing an overall displacement of the light spot according to the positions in the respective images, determining whether the overall displacement is greater than a predetermined safe value, and generating a warning output when the overall displacement is greater than the predetermined safe value. |
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