Method and device for increasing the robustness of a vehicle headlight having a cylindrical prism
AssigneeContinental Automotive GmbH
InventorStefan Holzinger
Life of this patent
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Abstract
A method is provided for increasing the robustness of a vehicle headlight comprising a cylindrical prism that can rotate about a rotary axis in a plurality of rotary positions and comprising a Hall effect sensor by means of the output signals of which the rotary position of the cylindrical prism can be determined. According to the method, a check is made as to whether a defect of the Hall effect sensor is present. In the event of a defect of the Hall effect sensor, a stop is temporarily provided and the rotary position of the prism is verified by being blocked at the provided stop.
Claims13
A method for increasing the robustness of a vehicle headlight having a cylindrical prism that is rotatable about a rotary axis using a first drive, and a Hall sensor that generates output signals for determining a rotary position of the cylindrical prism, the method comprising:
- performing a check to identify a defect of the Hall sensor,
- in response to identifying a defect of the Hall sensor:
- automatically moving the prism to a predefined stop position in which a movement of the prism is blocked by a physical stop, and
- automatically moving the prism from the predefined stop position to another predefined position.
An apparatus for increasing the robustness of a vehicle headlight, comprising:
- a cylindrical prism rotatable about a rotary axis to a plurality of rotary positions using a first drive, and
- a Hall sensor that generates output signals for determining a rotary position of the cylindrical prism,
- a control unit configured to:
- perform a check to identify a defect of the Hall sensor is present, and
- in response to identifying a defect of the Hall sensor:
- automatically move the prism to a predefined stop position in which a movement of the prism is blocked by a physical stop, and
- automatically move the prism from the predefined stop position to another predefined position.
Dependencies are inferred from the claim text.