Apparatus for controlling opeartion of road stud
US9807850B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Aug 25, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed herein is an apparatus for controlling an operation of a road stud. The apparatus includes a light emitting unit of the road stud, a power supply unit configured to supply power to the light emitting unit, an illumination sensor unit configured to apply a voltage corresponding to a peripheral illumination of the road stud, a reference-voltage generating unit configured to apply a reference voltage corresponding to a reference illumination of the road stud, a light emitting control unit configured to interrupt supply of power to the light emitting unit when the peripheral illumination of the road stud is equal to or more than the reference illumination, and configured to allow the supply of the power to the light emitting unit only when the peripheral illumination of the road stud is less than the reference illumination, and a road stud type-identification unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.