Method for adjusting the light colour of at least two lamps and motor vehicles

Abstract

Motor vehicle (1) with - at least two lamps (5, 5a, 5b, 5c) arranged distributed (3, 4, 12R) in the interior (2) of the motor vehicle (1), the light colour of which can be adjusted, - a sensor device (8, 9, 10, 11, 13L, 13R, 14, 15, 16) which is designed to record measurement data and has a biometric sensor (15), - a control device (6) which is designed by means of an evaluation unit (7) to evaluate the acquired measurement data, wherein - the biometric sensor (15) is designed to detect a heart rate of a driver, which relates to a physiological state of the driver of the motor vehicle (1), - the control device (6) is designed to adjust the light colour of the at least two lighting means (5, 5a, 5b, 5c) separately depending on the evaluation, and - adjust the intensity of interior lighting in accordance with the driver's heart rate.

Description

[0001] The invention relates to a motor vehicle with at least two lighting devices distributed throughout the interior of the motor vehicle, the light color of which can be adjusted, a sensor device configured to acquire measurement data, and a control device configured to evaluate the acquired measurement data by means of an evaluation unit. The invention also relates to a method for adjusting the light color of at least two lighting devices distributed throughout the interior of a motor vehicle.

[0002] For ambient lighting in the interior of a car, it is common practice to use several distributed, color-adjustable light sources. These light sources can, in particular, be modules of different colored LEDs. By mixing the light colors of the individual diodes, a wide variety of colors can be created.

[0003] From DE 10 2006 036 060 A1 and DE 10 2006 030 300 A1, it is known to provide ambient lighting in a vehicle, comprising a plurality of individually addressable RGB (red-green-blue) LED (light-emitting diode) modules spatially distributed throughout the vehicle. The RGB modules are connected to a function master and / or to each other via a bus system. The function master evaluates incoming sensor signals and controls the RGB modules based on the evaluation of the sensor signals, in order to control specific RGB modules with regard to their color, brightness, and timing.

[0004] German Patent Application DE 10 2004 015 671 A1 relates to a warning and information system for a vehicle. A signal source is arranged in a user's peripheral field of vision. Its output signals can be modified by adjusting the color, intensity, frequency, timbre, and / or volume.

[0005] The document US 2005 / 0111231 A1 relates to a lighting controller. The lighting controller can control a number of light sources according to a predetermined structure. The lighting controller can have inputs for audio signals. The lighting controller can be suitable for controlling LEDs.

[0006] German Patent Application DE 10 2010 020 566 A1 relates to a lighting system for integration into the interior of a motor vehicle. A lighting device can generate light in at least one light color and / or light intensity in a first illumination area. From there, it can be emitted and thus communicate at least one vehicle-specific and / or environment-specific piece of information to an occupant.

[0007] The published patent application DE 10 2008 064 022 A1 relates to an arrangement and a method for providing warning information dependent on hazardous situations. Sensor units collect environmental and / or vehicle-related data for this purpose. Various provision levels are defined for issuing warning information, which activate the evaluation and control unit depending on the vehicle's temporal and / or spatial distance from the hazardous location.

[0008] US patent US 6,650,251 B2 relates to a sensory monitor with an embedded display element. The disclosure concerns a measurement of human perception at the edge of consciousness. A corresponding system comprises a message transmitter that delivers messages embedded in suprathreshold information and the sensory monitor for measuring an individual's response. The message transmitter is connected to a control unit that includes a real-time feedback control loop. This allows the perceptibility of the embedded messages relative to the suprathreshold messages to be changed based on the sensory monitor.

[0009] Typically, only a limited selection of commands is implemented to control such ambient lighting in a vehicle. A command transmits the setting of a color with a specific intensity and dimming time for all accessible RGB modules within a network. A specific setting for a specific individual RGB module is not provided. In the known lighting scenarios, the color is mainly changed in the same way for all networked RGB modules based on a few signals. Dynamic lighting scenarios are unknown.

[0010] The object of the invention is to provide a motor vehicle and a method for adjusting a light color by means of which the interior of the motor vehicle can be illuminated in a more differentiated manner.

[0011] This object is achieved by a motor vehicle having the features of patent claim 1 and a method having the features of patent claim 8.

[0012] The motor vehicle according to the invention comprises: - at least two lamps distributed throughout the interior of the vehicle, the light colour of which can be adjusted, - a sensor device which is designed to record measurement data, and - a control device configured to evaluate the acquired measurement data by means of an evaluation unit. The control device of the motor vehicle according to the invention is configured to separately adjust the light color of the at least two lighting means depending on the evaluation.

[0013] This ensures individual adjustment of each light source. Complex lighting scenarios can also be realized, which are highly immersive for the vehicle's occupants and lend the vehicle a high-quality appearance. Emotions can be specifically aroused or intensified, particularly in the driver. The color range of the individual light sources can be fully utilized.

[0014] Preferably, each of the at least two light sources comprises three differently colored LEDs, the light intensity of which can be adjusted separately. In particular, the LEDs can be a red, a green, and a blue LED. This results in a large gamut, and a large color space can be covered by adjusting the light intensity of the individual LEDs.

[0015] Preferably, the sensor unit is designed to capture measurement data relating to a driving speed and / or an engine speed and / or a lateral acceleration and / or a gearshift position of the motor vehicle. The at least two lighting devices can then be separately adjusted depending on these driving parameters. The driver can be provided with information regarding the current driving behavior via a light color.

[0016] Preferably, the sensor unit is designed to capture measurement data relating to audio signals in the vehicle's interior. The light color can then be adjusted depending on the current audio signals. The combination of sound and light stimuli creates a highly intense atmosphere, which can be used to specifically influence the emotions of the vehicle's occupants.

[0017] The sensor unit is designed to capture measurement data relating to the physiological state of the vehicle occupant. Depending on the driver's biometric data, emotions can be specifically enhanced or dampened, for example, by adjusting the light color. The sensor device comprises a biometric sensor. The biometric sensor is designed to capture a driver's heart rate, which relates to a physiological state of the vehicle's driver. The control device is designed to adjust the intensity of the interior lighting in accordance with the heart rate.

[0018] The control device is preferably designed to separately adjust a light intensity and / or a temporal progression of the light intensity of the at least two light sources depending on the evaluation of the measurement data. In addition to the light color, further parameters are thus available with which variable and effective ambient lighting can be created.

[0019] Preferably, a first set of the at least two illuminants is assigned to a first illuminant group, and a second set of the at least two illuminants is assigned to a second illuminant group. The control device is configured to control the illuminants of the first and / or second set such that they each behave similarly with regard to their temporal and / or color light emission behavior. Functionally similar illuminants can thus be combined into a group. Adjustment via the control device is simplified.

[0020] The method according to the invention serves to adjust the light colour of at least two lighting means which are distributed in the interior of a motor vehicle and comprises the following steps: - Collecting measurement data, wherein the measurement data includes a driver's heart rate as a physiological state; - Evaluating the measurement data, whereby the heart rate is evaluated using a biometric analysis; - separate adjustment of the light colour and / or a light intensity and / or a temporal progression of the light intensity of the at least two illuminants depending on the biometric analysis; and - Depending on the evaluation, separate adjustment of the light colour of at least two lamps.

[0021] Preferably, within the scope of the method, measurement data relating to audio signals in the interior of the motor vehicle are recorded, evaluated by means of a Fourier analysis and, depending on the Fourier analysis, the light colour and / or the light intensity and / or a temporal progression of the light intensity of the at least two light sources is adjusted separately.

[0022] Within the scope of the method, measurement data relating to a physiological state of the occupant of the motor vehicle are recorded, evaluated by means of a biometric analysis and, depending on the biometric analysis, the light colour and / or the light intensity and / or a temporal progression of the light intensity of the at least two light sources is adjusted separately.

[0023] The invention is explained in more detail below using exemplary embodiments.

[0024] They show: Fig. 1 a motor vehicle in schematic representation with lamps for the ambient lighting in the interior; and Fig. 2 a schematic representation of a network of separately adjustable light source groups.

[0025] In the figures, identical or functionally identical elements are provided with the same reference numerals.

[0026] Fig. 1 shows a motor vehicle 1, in whose interior 2 several RGB modules 5a, 5b and 5c are arranged as light sources for the ambient lighting. The RGB module 5a is arranged in a front area 3 of the motor vehicle 1, while the RGB module 5b is arranged in a rear area 4. The RGB module 5c is arranged in the area of ​​a right-hand vehicle door 12R. The RGB modules 5a, 5b and 5c can be controlled separately via a computer 6 with an evaluation unit 7, so that the light color of each RGB module 5a, 5b or 5c can be adjusted separately. For this purpose, a red LED R, a green LED G and a blue LED B within the individual RGB modules 5a, 5b and 5c can be individually adjusted with regard to their light intensity.

[0027] By collecting and combining specific components with certain features, the implementation of complex dynamic lighting scenarios is possible. The RGB modules 5a, 5b, and 5c are connected to the computer 6 via a standardized communication interface (e.g., LIN). They are assigned a unique address and can, if necessary, also be assigned to a group G1, G2, or GN (see Fig.2). Thus, the RGB modules 5a and 5b responsible for the interior lighting are assigned to group G1, while the RGB module 5c, which is used to illuminate a door strip of the right door 12R, is assigned to group G2. The number of possible addresses for the individual RGB modules and the respective group is not limited. Based on the respective address, the computer 6 can separately and individually set the light color, light intensity, and a temporal progression of the light intensity, e.g., dimming time, validity time, transition time, or any combination of these, for a specific RGB module. Multi-color interior lighting in the motor vehicle 1 is possible, whereby various dynamic lighting scenarios can be realized, within which any lighting sequences are freely programmable. A complex, temporally and spatially highly resolved lighting scenario is enabled using the full color space.Computer 6 represents a function master which controls temporally and spatially resolved, complex sequences of light colours and brightnesses.

[0028] An evaluation unit 7 is provided in the computer 6, which evaluates various sensor data and, based on this evaluation, adjusts the individual RGB modules 5 individually and flexibly. A driving speed sensor 8 is provided, which records measurement data relating to the driving speed of the motor vehicle 1. The engine speed of the motor vehicle 1 can be measured using an engine speed sensor 9. A lateral acceleration sensor 10 is also provided, with which lateral accelerations can be measured. In addition, a gearshift sensor 11 is provided, with which measurement data relating to the position of a gearshift of the motor vehicle 1 can be recorded. Door sensors 13L and 13R are provided on a left motor vehicle door 12L and on the right door 12R, respectively, with which it can be determined whether the respective door 12L or 12R is open or closed. An ignition key sensor 14 is also present.A microphone 16 can capture audio signals, while a biometric sensor 15 can measure biometric signals from passengers of the motor vehicle 1. Additional sensors can also be provided, e.g., those that detect environmental signals. Individual color selection can also be made depending on the parameters P: installation location, color space, intensity, and dimming time.

[0029] Four complex lighting scenarios will be briefly discussed: Driving style control of the RGB modules 5 is possible. Speeds, accelerations, and other driving conditions of the motor vehicle 1 can be recorded using the vehicle speed sensor 8 and / or engine speed sensor 9 and / or lateral acceleration sensor 10 and / or gearshift sensor 11. Depending on this data, the light intensity and color of certain RGB modules 5 can be changed, so that the driving dynamics of the motor vehicle 1 are reflected in the interior 2 via the lighting scenario. The input variables convert the color and brightness values ​​according to a suitable characteristic map. By recording the longitudinal acceleration, the light color of the entire lighting scenario as well as the brightness of the cockpit lighting can be controlled.

[0030] The lateral acceleration sensor 10 can detect the lateral acceleration of the motor vehicle 1, and the RGB module 5c in the door strip of the right door 12R can be controlled based on this. For example, if the motor vehicle 1 makes a left turn, the RGB module 5c is located on the outside of the turn and its brightness can be controlled accordingly.

[0031] A car radio 17, for example, outputs music in the form of audio signals. The audio signal can be captured by the microphone 16 and evaluated by the computer 6. The audio signal is analyzed using a Fourier transformation, and spaces are defined with color and intensity based on the existing frequencies and their amplitudes. Additionally, a music genre can be determined using metadata from the music file, and specific colors and a frequency for changing them can be implemented using the RGB modules 5. The lighting scenario can be matched to the music, resulting in a harmonious, spatial, and color-related change in the interior lighting.

[0032] Another lighting scenario can use biometric data from the vehicle occupants to suggest a calming color tone and lighting sequence to reduce the occupant's elevated stress levels. For example, the intensity of the interior lighting is adjusted in accordance with the driver's heart rate. The intensity of the interior lighting can fluctuate in correlation with the driver's heart rate, and the frequency of the light oscillation can be slowly reduced to help calm the driver. List of reference symbols 1 motor vehicle 2 Interior 3 Front area 4 Rear area 5, 5a, 5b, 5c RGB module 6 computers 7 Valuation unit 8 Driving speed sensor 9 Engine speed sensor 10 Lateral acceleration sensor 11 Gear shift sensor 12L, 12R door 13L, 13R door sensor 14 Ignition key sensor 15 biometric sensor 16 microphones 17 Car radio R light-emitting diode G Light-emitting diode B Light-emitting diode P parameters G1, G2, GN lamp group

Claims

[1] Motor vehicle (1) with - at least two lamps (5, 5a, 5b, 5c) arranged distributed (3, 4, 12R) in the interior (2) of the motor vehicle (1), the light colour of which can be adjusted, - a sensor device (8, 9, 10, 11, 13L, 13R, 14, 15, 16) which is designed to record measurement data and has a biometric sensor (15), - a control device (6) which is designed by means of an evaluation unit (7) to evaluate the acquired measurement data, wherein - the biometric sensor (15) is designed to detect a heart rate of a driver, which relates to a physiological state of the driver of the motor vehicle (1), - the control device (6) is designed to adjust the light colour of the at least two lighting means (5, 5a, 5b, 5c) separately depending on the evaluation, and - adjust the intensity of interior lighting in accordance with the driver's heart rate. [2] Motor vehicle (1) according to claim 1, characterized by that each of the at least two lighting means (5, 5a, 5b, 5c) comprises three differently colored light-emitting diodes (R, G, B), the light intensity of which can be adjusted separately. [3] Motor vehicle (1) according to claim 1 or 2, characterized by in that the sensor unit is designed to record measurement data relating to a driving speed (8) and / or an engine speed (9) and / or a lateral acceleration (10) and / or a position of a gearshift (11) of the motor vehicle (1). [4] Motor vehicle (1) according to one of the preceding claims, characterized by that the sensor unit (16) is designed to record measurement data relating to audio signals in the interior (2) of the motor vehicle (1). [5] Motor vehicle (1) according to one of the preceding claims, characterized bythat the control device (6) is designed to separately adjust a light intensity and / or a temporal profile of the light intensity of the at least two lighting means (5, 5a, 5b, 5c) depending on the evaluation of the measurement data. [6] Motor vehicle (1) according to one of the preceding claims, characterized by in that a first set of the at least two illuminants (5a, 5b) is assigned to a first illuminant group (G1) and a second set of the at least two illuminants (5c) is assigned to a second illuminant group (G2), and the control device (6) is designed to control the illuminants of the first (5a, 5b) and / or second (5c) set in such a way that they each behave in the same way with regard to their temporal and / or color light emission behavior. [7] Method for adjusting the light colour of at least two lighting means (5, 5a, 5b, 5c) which are arranged distributed (3, 4, 12R) in the interior (2) of a motor vehicle (1), comprising the steps: - Collecting measurement data, wherein the measurement data includes a driver's heart rate as a physiological state; and - Evaluating the measurement data, whereby the heart rate is evaluated using a biometric analysis, - separate adjustment of the light colour and / or a light intensity and / or a temporal progression of the light intensity of the at least two illuminants (5, 5a, 5b, 5c) depending on the biometric analysis and - depending on the evaluation, separate adjustment of the light colour of at least two light sources (5, 5a, 5b, 5c). [8] Method according to claim 7, characterized bythat measurement data relating to audio signals in the interior (2) of the motor vehicle (1) are recorded (16), evaluated by means of a and depending on which the light colour and / or the light intensity and / or a temporal progression of the light intensity of the at least two lighting means (5, 5a, 5b, 5c) is set separately.

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