Method for operating lighting device in motor vehicle
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A technology for lighting equipment and motor vehicles, applied in lighting circuits, vehicle components, transportation and packaging, etc., can solve problems such as limiting dynamic lighting scenes, and achieve the effect of expanding possibilities
Pending Publication Date: 2020-12-04
BAYERISCHE MOTOREN WERKE AG
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Problems solved by technology
In this case, however, there is the problem that a desired simultaneous change of the operating parameters of a plurality of lighting units is associated with a time delay due to the corresponding messages being continuously sent by the control device to the communication bus
This limits the possibilities for generating dynamic lighting scenes
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[0025] An embodiment of the invention will be described below with the aid of a lighting system in a motor vehicle, which has a plurality of LED units as a lighting unit. Preferably, the lighting device is an ambient interior lighting device. The LED unit is in figure 1 LE1, LE2, . . . , LE26 are plotted in the schematic illustration of . In other words, the lighting device includes 26 LED units. These LED units are connected to the control unit or control device 1 via a communication bus 2 in the form of a LIN bus. By using the LIN bus, technically no more than 26 lighting units can be operated in the lighting device. In the embodiment described here, the LED unit is an RGB LED unit which contains red, green and blue LEDs and which can produce different colors by corresponding color mixing of these LEDs. Furthermore, the brightness of the LEDs and thus the total brightness of the RGB-LED unit can vary.
[0026] LED units LE1 to LE26 via message ME (see figure 2 ) are m...
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Abstract
The invention relates to a method for operating a lighting device in a motor vehicle, wherein the lighting device comprises a plurality of lighting units (LE1, LE2-LE26), which are connected to a communication bus (2) in the motor vehicle and receive successive messages (ME) from a control unit (1) via the communication bus (2), the lighting units (LE1, LE2-LE26) of the plurality of lighting units(LE1, LE2-LE26) being divided into a plurality of groups (G1, G2, G3, G4), each formed of one or more lighting units (LE1, LE2-LE26), and one group (G1, G2, G3, G4) being associated with each message. Each message (ME) specifies one or more operating parameters (FB, HE, TFB, THE) for an individual lighting unit (LE1, LE2-LE26), and a lighting unit (LE1, LE2-LE26) which is in the associated group(G1, G2, G3, G4) of a received message (ME) performs its operation on the basis of the operating parameter(s) (FB, HE, TFB, THE) from the received message (ME). The method according to the invention is characterised in that the control unit (1) changes the division of the plurality of lighting units (LE1, LE2-LE26) in groups (G1, G2, G3, G4) at least once during the operation of the lighting device.
Description
technical field [0001] The invention relates to a method for operating a lighting system in a motor vehicle and a corresponding lighting system. Background technique [0002] Lighting devices for motor vehicles are known from the prior art which comprise a plurality of lighting units which are connected to a communication bus, for example a LIN bus (LIN=Local Interconnect Network, Local Internet). In this case, a message to change the operating parameters of the lighting unit is sent on the LIN bus by means of the control unit of the lighting device. Such lighting devices are often installed in the interior of a motor vehicle in order to generate different light scenes by means of luminous units. [0003] In lighting devices of the type described above, messages are sent on the communication bus at a predetermined rate. In this case, only the operating parameters of the individual lighting units can be determined using the messages. Conventionally, therefore, only the ope...
Claims
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Application Information
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