Method and control module for pulsed luminous flux light sources for a motor vehicle
AssigneeValeo Vision
InventorsDavid Hue, Laurent Jean Francois, Mourad Sakly
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Abstract
A method and a control module which are appropriate for the control of the supply of electric current to light sources with electroluminescent semiconductor elements. According to the invention, the supply current is pulsed at a predetermined frequency, and is compliant with predetermined setpoints for the luminous flux or electric current.
Claims20
Control method for at least one light source on a motor vehicle, wherein the method comprises the following steps:
- a) the provision of a setpoint for the luminous flux to be emitted by the light source(s), in a control unit of a control module for said light source(s);
- b) reception, in the control unit, of a first control signal which is intended to control a device for the control of the electric power supply to the light sources;
- c) verification, in the control unit, of the capability of the first control signal to control the control device, such that the luminous flux setpoint is observed;
- d) if the control signal does not show this capability, generation, in the control unit, of a second control signal which is intended to control the device for the control of the electric power supply, in place of said first signal.
Control module of at least one light source on a motor vehicle, comprising a device for the control of the electric power supply to the light sources, and a control unit, wherein the control unit comprises:
- means for the reception of a first control signal,
- a memory component for the storage of a setpoint for the luminous flux to be emitted by the light source(s), or of a current setpoint;
- means for the processing of data, which are configured to verify the capability of the first control signal for the control of the control device, such that the luminous flux setpoint is observed;
- generation means which are configured to generate, if the first control signal does not show this capability, a second control signal, wherein said second signal is intended to control the device for the control of the electric power supply, in place of said first signal.
Dependencies are inferred from the claim text.