Granted Patent B2

US 12,246,639 · App. 17/609,554 · Granted Mar 11, 2025

Inventors: Marouene Karray (Bobigny, FR); Rabih Taleb (Bobigny, FR); Hafid El Idrissi (Bobigny, FR)

Assignee: Valeo Vision

B60Q1/1423G06N20/00H05B45/18B60Q2300/112B60Q2300/314B60Q2300/42

Abstract

Claims (35)

1. A method for operating an automotive lighting device that applies at least one solid-state light source comprising:

providing a plurality of sensors that are configured to provide some device data;

providing a control unit configured to receive and process said device data;

generating an estimated condition of the automotive lighting device based on said device data, the estimated condition derived from indirect data without a dedicated sensor; and

controlling an operation parameter of the automotive lighting device using the estimated condition; and

resulting in a decrease of current that is fed into said solid-state light source such that output flux value and an operation temperature value decreases, accordingly.

2. The method of claim 1 , wherein the operation parameter includes at least one of a current value of the light source, a heat dissipation parameter or a flux threshold value of a low-beam functionality.

3. The method of claim 1 , wherein a processing of the device data includes estimating an external lighting device temperature by:

training the control unit to estimate the external lighting device temperature with a training dataset; and

testing the control unit with a real external lighting device temperature data.

4. The method of claim 1 , wherein the operation parameter includes at least an operations of a fan, modulating of ventilation gates, or an operation of active cooling elements.

5. The method of claim 4 , wherein training the control unit includes utilizing a machine learning algorithm.

6. The method of claim 1 , wherein the control unit is configured to generate the estimated condition by:

training the control unit to generate an estimated condition with a training dataset;

simulating a first time for derating if no action is carried out;

associating an action over an operation parameter to a plurality of values of the estimated condition;

simulating the action over the operation parameter; and

testing the control unit with a simulated action to verify whether a time for derating is greater than the first time for derating.

7. The method of claim 1 , wherein the plurality of sensors includes at least one of a vehicle speed sensor, an ambient temperature sensor, an ambient humidity sensor, an external light sensor, an air speed sensor, a lighting functionality activation sensor, a light source temperature, a geo-positioning sensor; or a camera to assess the presence of other vehicles.

8. The method of claim 7 , further including obtaining the light source temperature by a thermistor.

9. The method of claim 1 , wherein the device data further comprises physical data of the automotive lighting device.

10. A non-transitory computer program including instructions, which, when the program is executed by a control unit, causes the control unit to carry out a method resulting in a decrease of current that is fed into a solid-state light source such that output flux value and an operation temperature value is configured to decrease comprising:

providing a plurality of sensors that are configured to provide some device data;

providing the control unit configured to receive and process said device data;

generating an estimated condition of the automotive lighting device based on said device data, the estimated condition derived from indirect data without a dedicated sensor; and

controlling an operation parameter of the automotive lighting device using the estimated condition.

11. An automotive lighting device comprising:

a matrix arrangement of solid-state light sources;

a plurality of sensors configured to provide some device data;

a control unit for performing a method resulting in a decrease of current that is fed into the matrix arrangement such that output flux value and an operation temperature value is configured to decrease comprising:

providing the plurality of sensors that are configured to provide some device data;

providing the control unit that is configured to receive and process said device data;

generating an estimated condition of the automotive lighting device based on said device data, the estimated condition derived from indirect data without a dedicated sensor; and

controlling an operation parameter of the automotive lighting device using the estimated condition.

12. The automotive lighting device of claim 11 , wherein the matrix arrangement includes at least 2000 solid-state light sources.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (34)