Method for controlling adaptive vehicle headlights

Abstract

This invention relates to a method for controlling adaptive motor vehicle headlights, comprising the steps of: a) providing a headlight and a first data memory, and storing a plurality of data records in the first data memory; b) connecting the headlight to a motor vehicle, the motor vehicle being configured to output control data for controlling the headlight; c) transmitting control data to the headlight via the motor vehicle, the headlight having an internal computing unit that receives the control data and selects and recalls data records stored in the first data memory, hereinafter also referred to as active data records, based on the control data; d) controlling the light source based on the active data records via the computing unit; d1) determining the number of active data records, wherein each active data record is given a single weight by a percentage by means of the control data; d2) specifying a target light intensity by superimposing light intensity values ​​while taking into account the corresponding weights; and d3) outputting the target light intensity at the maximum permissible rate of change of light intensity over time.

Description

Technical Field

[0001] The present invention relates to a method for controlling an adaptive vehicle headlight, wherein a data storage is allocated to the adaptive vehicle headlight, wherein the adaptive vehicle headlight is configured to radiate different segmented light distributions with a resolution of at least 2×12, and for this purpose has light sources arranged in segments, wherein each segment includes at least one LED light source.

[0002] The present invention also relates to a motor vehicle headlight prepared for application of the method according to the invention. Background Technology

[0003] Headlights capable of radiating adaptive light distribution are already known in the prior art. Such headlights are sometimes referred to as pixel modules in expert circles. Light segments (pixels; hereinafter also simply "segments") are individually switchable and dimmable, and each light segment is assigned an intensity value.

[0004] There are various possibilities for achieving such an adaptive light distribution consisting of multiple light segments (pixels). A known and efficient method employs a large number of LEDs arranged in a matrix, where each individual LED can be individually switchable and dimmable, and thus constitutes a pixel or light segment in the radiated light distribution.

[0005] Therefore, this type of lighting system allows for the creation of largely arbitrary light images, where, for example, the basic light distribution can be adapted at any time to selectively obscure or illuminate other road users (such as pedestrians or vehicles). Here, transitions between different light functions can be achieved by recalling corresponding data records from memory and subsequently delivering the data to the light unit responsible for radiating the light. Different vehicle manufacturers typically have different requirements regarding the quantity, type, and transitions between different light functions. A smooth transition should generally be achieved when changing light functions or light distributions. This also applies in part to meeting legal requirements, especially when light image adaptation is required during cornering. During cornering, the center of gravity of the light image can be shifted strongly or less strongly depending on the steering wheel angle to better illuminate the driving lane. Therefore, abrupt changes in the light image should only be reserved for exceptional circumstances, as these exceptions are perceived as unpleasant and may undesirably limit or divert the driver's attention. Solutions known in the prior art for avoiding abrupt changes in light images by switching between multiple light distributions are derived by calculating the individual intensity values ​​of all individual pixels while taking into account limiting values. However, this leads to high demands on the computational efficiency of the computing units, especially as the number of pixels increases. Summary of the Invention

[0006] Therefore, the object of the present invention is to provide a method for controlling adaptive vehicle headlights, which overcomes the disadvantages mentioned at the beginning. This object is solved using a method of the type mentioned at the beginning, wherein the following steps are provided according to the present invention:

[0007] a) Provides the aforementioned adaptive vehicle headlight and the aforementioned first data storage device, and stores a plurality of data records in the first data storage device, wherein a light intensity value is pre-given for each data record in each segment for implementing the light distribution to be radiated by the adaptive vehicle headlight, wherein the plurality of data records includes at least two sets of data records, namely a first set of low beam data records and a second set of high beam data records, wherein each set includes at least one data record, wherein each low beam data record is configured to generate a low beam distribution and each high beam data record is configured to generate a high beam distribution, wherein the design scheme of the corresponding light distribution is different for different data records.

[0008] b) Connecting adaptive vehicle headlights to a vehicle, wherein the vehicle is configured to output control data for controlling the adaptive vehicle headlights.

[0009] c) The control data is transmitted from the vehicle to the adaptive vehicle headlight, wherein the adaptive vehicle headlight has an internal computing unit that receives the control data and selects and retrieves data records stored in the first data memory, hereinafter also referred to as active data records, based on the control data.

[0010] d) The light source arranged in the segment is controlled by the computing unit based on the active data record according to step c) with the application of a configurable smoothing function, wherein the adaptive vehicle headlight has an internal data memory storing a light distribution transition adjustment algorithm, wherein the light distribution transition adjustment algorithm can be pre-defined via an interface by which the internal data memory can be accessed externally, and the configurable smoothing function is specified by the light distribution transition adjustment algorithm, wherein the application of the configurable smoothing function is always performed in accordance with the following rules:

[0011] d1) Determine the number of active data records, wherein each active data record is given a single weight as a percentage by means of the control data.

[0012] d2) The target light intensity to be output for each segment is specified by superimposing the light intensity values ​​derived from the active data records, taking into account the corresponding weights.

[0013] d3) Output the target light intensity for each segment, taking into account the pre-given maximum permissible rate of change of the light intensity radiated by the corresponding segment, wherein if the target light intensity exceeds the pre-given maximum permissible rate of change of the light intensity through the configurable smoothing function, the target light intensity is temporarily manipulated to not exceed the maximum permissible rate of change of the light intensity.

[0014] The minimum number of segments is 24, comprising a matrix of 2 rows and 12 columns. Currently, this technology allows for the economical fabrication of resolutions up to 200 segments using LEDs, with the possibility of using even higher numbers of segments. However, as the number of segments increases, the computational cost for calculating the light intensity of each target also increases. Therefore, the maximum number of segments that can be economically run without using a GPU in the future could be, for example, 400, where these segments are divided into matrices with rows and columns. Alternatively, in the case of a particularly high number of pixels, groups of pixels can be combined into clusters, which are collectively manipulated, thereby potentially reducing the computational power of the algorithm. The light intensity can be set, for example, by timing the on-time of the segment or the ratio of on-to-off-time (corresponding to the duty cycle).

[0015] The first data storage device can be located outside the headlight. Alternatively, the first data storage device can be located inside the headlight.

[0016] Control data is data transmitted from the vehicle to the headlights. Here, on the one hand, it can be data actively provided by the user in advance (e.g., if the user selects the light function themselves), which is generated based on user behavior (such as entering a curve or the resulting steering angle), or it can be data independent of user behavior and generated, for example, by the vehicle or an environmental detection device arranged in the vehicle to identify the environment around the vehicle.

[0017] Instead of using LED light sources, the present invention can also be used with other headlights, wherein the other headlights are segmented without manipulating LEDs. In this regard, technologies such as digital micromirror devices (DMDs), laser scanners, liquid crystal displays (LCDs), or other spatial light modulator systems (SLM systems) should be mentioned, for example.

[0018] Intensity values ​​can be stored in memory and collectively describe the basic light distribution. Here, different basic distributions, such as near light, far light, severe weather light, and urban light, can be stored in memory as data records. Whether each pixel currently exists in memory as a dedicated value in a data record, or whether interpolation is performed between the values ​​of multiple spatially spaced pixels as is common, is not important to this invention.

[0019] Specifically, it can be stipulated that the sum of the percentage-based single weights in each group does not exceed 100%, and the group weight values ​​are further allocated to each group, and the sum of the group weight values ​​does not exceed 100%, wherein the target light intensity of each segment is specified according to step d2) by multiplying the percentage-based single weight with the corresponding group weight value of the group to which it belongs, and calculating the resulting weight value, wherein the light intensity value derived from the active data record is multiplied with the corresponding obtained weight value and the light intensity values ​​derived from each active data record for each segment are summed, and the sum is specified as the target light intensity for each segment.

[0020] Furthermore, it can be stipulated that all weight values ​​are selected such that the sum of the obtained weight values ​​reaches 100%. Alternatively, it is conceivable that a weaker operation can generally be maintained, i.e., an operation with a total obtained weight of less than 100%.

[0021] Specifically, it can be stipulated that the first set of near beam data records includes data records used to generate the following different near beam distributions:

[0022] I) A first low beam distribution, which can be used as a standard low beam distribution, wherein preferably it is a glare-free low beam.

[0023] II) A second low beam distribution, which has an increased effective distance in the right half of the light distribution compared to the first low beam distribution, in order to achieve an increased effective distance at the edge of the right lane for improved pedestrian recognition.

[0024] III) A third near-light distribution, which is broadened relative to the first near-light distribution and has horizontal light and dark boundaries.

[0025] IV) A fourth low beam distribution having an increased effective distance relative to the first low beam distribution, wherein the low beam distribution is shifted vertically upward relative to the first low beam distribution by an angle of at least 1°.

[0026] Regarding I, it should be mentioned that if, in the case of low beam, the illuminance at a distance of 25 m in front of each individual headlight, on a plane perpendicular to the roadway and at a height above the headlight center, does not exceed 1 lx, then glare is considered eliminated, or glare-free low beam can be discussed. If the highest point of the headlight's illumination surface is more than 1200 mm above the roadway, then under the same conditions, the illuminance above a height of 1000 mm cannot exceed 1 lx. In the case of headlights with an installation height exceeding 1400 mm, the Hell-Dunkel-Grenze at 15 m in front of the headlight can be only half the height of the headlight center. In the case of headlights used for asymmetrical low beam, unless otherwise stipulated, for example, for legal reasons, the 1 lux boundary may rise to the right at an angle of 15 degrees from the point corresponding to the headlight center. The headlights can illuminate the roadway such that the illuminance perpendicular to the incident light at a height of 150 mm above the roadway at a distance of 25 m in front of the headlights reaches at least the set value. Headlights used in pairs for high beam and low beam can be configured such that the headlights can only be shaded simultaneously and evenly.

[0027] Regarding II, it should be mentioned that, relative to the light distribution based on point I, a greater illumination distance and, if necessary, higher light intensity are set. That is, a light distribution can be set that has a low beam distribution with a greater effective distance at the edge of the right-hand lane (from the driver's perspective) to identify pedestrians earlier. For this purpose, for example, higher light intensity can be set in each segment, or segments that are inactive in the light distribution based on point I can be switched to active.

[0028] Regarding III, it should be mentioned that, for example, the light and dark boundary can be constructed to be horizontal, which better prevents other road users from being dazzled and, in particular, provides wider illumination of the area in front of the vehicle.

[0029] Regarding IV, it should be mentioned that such a light distribution can be set, for example, by increasing the light cone generated by the vehicle's headlights, which can be done, for example, at increased driving speeds (e.g., exceeding 80 km / h).

[0030] In addition, it can be specified that the second set of high beam data records includes data records used to generate the following different high beam distributions:

[0031] I) First high beam distribution, which can be used as the standard high beam distribution.

[0032] II) A second high-beam distribution, which has a reduced light intensity compared to the first high-beam distribution, but is operated such that the second high-beam distribution continues to at least satisfy a minimum statutory preset.

[0033] III. The third high beam distribution, compared with the first high beam distribution, increases light intensity or effective distance at high vehicle speeds (e.g., exceeding 80 km / h), for example by increasing the light cone generated by the vehicle's headlights.

[0034] Regarding I, it should be mentioned that this light distribution enables increased visibility in low-light driving conditions. Visibility refers to the maximum horizontal distance at which objects close to the ground can be identified by the appropriate illumination from the vehicle's headlights in low-light driving conditions.

[0035] Regarding II, it should be mentioned that here it refers to Eco-Fernlicht (Eco-Fernlicht).

[0036] In practice, all light distributions are of course designed by experts to ensure that the light distributions meet applicable legal requirements.

[0037] Specifically, it can be specified that multiple data records include a third set of data records relating to a special light distribution that does not correspond to either a low beam or high beam distribution. For example, this could be a special light function that does not represent either low beam or high beam functionality. These special functions can also be designed according to national or weather conditions.

[0038] Furthermore, it can be specified that the maximum rate of change of the target light intensity over time is varied within a predetermined upper and lower limit based on the detected control data, wherein the actual rate of change is selected in any way such that the change of the target light intensity from 0% to 100% takes place over a duration between 0.1s and 5s.

[0039] For example, in practice, a value of 1 second for a change from 0 to 100% has proven beneficial. The change can be linear or non-linear. The target light intensity is temporarily manipulated by pre-given maximum allowable rate of change for a configurable smoothing function, such that the maximum allowable rate of change is not exceeded. The maximum rate of change is understood as the rate of change of the intensity radiated by the segment. If a segment radiates 200 lm of optical flow, for example, at full operation (i.e., 100% utilization), then, provided the maximum allowable rate of change is exactly adhered to, a change from 0 to 100% power at a maximum allowable rate of change of 200 lm / s would require a duration of 1 second. —Especially when a faster change is not required by corresponding changes in optical function or weights, the actual rate of change can certainly be lower. The maximum rate of change can also be significantly higher, and for example, allow a change from 0% to 100% optical power in 0.1 seconds. The applicable maximum rate of change can be specified accordingly based on the operating conditions.

[0040] Specifically, it can be stipulated that, in the event of a critical traffic situation, the maximum permissible rate of change over time should be increased relative to normal traffic conditions. This permissible maximum rate of change may also be related to control data. Therefore, it can be stipulated that the maximum permissible rate of change is increased in critical traffic situations and decreased in normal traffic conditions to avoid misleading the driver's attention. Smoothing can be performed individually for each segment—for example, one segment is smoothed while another is not, provided that the maximum rate of change is not exceeded there.

[0041] Furthermore, it can be specified that the vehicle headlights are configured to verify the rationality of control data and continuously perform the verification, wherein upon determining that the control data is defective, the system returns to safe operation, wherein preferably the first low beam distribution is radiated.

[0042] Specifically, it can be specified that the control data includes information about other traffic participants detected in the vehicle's surrounding environment, and when the active data record includes high beam data records, these high beam distributions are manipulated such that segments whose activation would cause glare to these traffic participants are manipulated at a lower intensity, preferably completely blocked. This means that the vehicle headlights are preferably designed to prevent glare to other traffic participants.

[0043] Furthermore, it can be specified that the target light intensity for each segment, as determined by step d3), can be temporarily manipulated to produce an output effect by replacing the target light intensity calculated according to step d3) with the effect light intensity. This temporary manipulation is limited to the duration of the effect / animation (e.g., a "welcome light") and is typically less than 5 seconds.

[0044] Specifically, it can be specified that the target light intensity according to step d3) is manipulated according to the vehicle's steering angle by shifting the target light distribution calculated according to step d3) horizontally according to the vehicle's steering angle. This allows for turning light, for example, by shifting the light distribution to the left when turning left. That is, the target light intensity migrates horizontally between adjacent segments. This process can also be referred to as "turning".

[0045] The present invention further relates to an adaptive vehicle headlight configured for application in the method according to the invention, wherein the adaptive vehicle headlight is configured to radiate different segmented light distributions with a resolution of at least 2×12, and for this purpose has light sources arranged in segments, wherein each segment includes at least one LED light source.

[0046] The present invention further relates to a motor vehicle including an adaptive motor vehicle headlight according to the invention and a first data storage device allocated to the adaptive motor vehicle headlight, wherein a plurality of data records are stored in the first data storage device, wherein each data record for each segment is pre-given a light intensity value for implementing a light distribution to be radiated by the adaptive motor vehicle headlight, wherein the plurality of data records include at least two sets of data records, namely a first set of low beam data records and a second set of high beam data records, wherein each set includes at least one data record, wherein each low beam data record is configured to generate a low beam distribution and each high beam data record is configured to generate a high beam distribution, wherein the design scheme of the corresponding light distribution is different for different data records, wherein the motor vehicle is configured to perform environmental detection and to transmit control data to the motor vehicle headlight.

[0047] The description of environmental detection refers to the detection of the environment surrounding the vehicle, which can be performed using sensors such as optical cameras, ultrasonic sensors, lidar, and radar. Attached Figure Description

[0048] The invention will now be described in more detail with reference to the exemplary and non-limiting embodiments illustrated in the figures.

[0049] Figure 1 A schematic diagram of a motor vehicle according to the invention, having adaptive motor vehicle headlights according to the invention, is shown.

[0050] Figure 2 An adaptive motor vehicle headlight according to the present invention is shown.

[0051] Figure 3 Exemplary illustrations showing various aspects of the invention are provided.

[0052] Figure 4An exemplary flowchart relating to the method according to the present invention is shown.

[0053] Figures 5a to 5c An exemplary light distribution that can be radiated using the method according to the invention is shown. Detailed Implementation

[0054] Unless otherwise stated, the same reference numerals in the following figures denote the same features.

[0055] Figure 1 A schematic diagram of a motor vehicle 1 according to the invention, having an adaptive motor vehicle headlight 2 according to the invention, is shown.

[0056] Figure 2 An adaptive vehicle headlight 2 according to the present invention is shown. The headlight includes a light module 2' for radiating light distribution. In this example, the light module 2' includes a matrix of light sources 2aa in the form of 24 LEDs arranged in two rows and twelve columns. A first data memory 3 is allocated to the adaptive vehicle headlight 2. Therefore, the adaptive vehicle headlight 2 is configured to radiate different segmented light distributions with a resolution of at least 2 × 12, and for this purpose has light sources 2aa arranged in segments 2a, wherein each segment 2a includes at least one LED light source, currently including exactly one LED light source. The adaptive vehicle headlight 2 has an internal computing unit 2c configured to receive control data 1a. The control data 1a may contain information about other traffic participants detected in the surrounding environment of the vehicle 1 or information about the vehicle itself. This information can also be pre-given by a user or driver or influenced by the user or driver. Specifically, it can be specified that control data 1a includes information about other traffic participants detected in the surrounding environment of vehicle 1, and when the active data record includes high beam data records 3b1 to 3b4, these high beam distributions LVb1 to LVb4 are manipulated such that the segment 2a whose activation would cause glare to these traffic participants is manipulated at a lower intensity, preferably completely blocked. This means that the vehicle headlights 2 are preferably designed to prevent glare to other traffic participants. This function in Figure 4 The term "glare-free high-beam mask" (GFHB-mask) is used to represent this, from which a weighted so-called anti-glare high-beam light distribution is obtained, i.e., a glare-free high-beam distribution configured considering control data 1a. Furthermore, a function "move-hor" can be provided, which shifts the target light distribution horizontally according to the steering angle of vehicle 1. For completeness, it should be mentioned that both the "move-hor" function and the "GFHB-mask" function are optional, and the method according to the invention can also be performed without using these functions.

[0057] according to Figure 2 Additionally, it should be mentioned that the adaptive vehicle headlight 2 also has an internal data memory 2d, on which a light distribution transition adjustment algorithm LV-AL is stored. The light distribution transition adjustment algorithm LV-AL can be pre-given through an interface 4, by means of which the internal data memory 2d can be accessed from the outside. A configurable smoothing function Fg is specified by the light distribution transition adjustment algorithm LV-AL.

[0058] Figure 3 Exemplary illustrations showing various aspects or components of the invention are provided. The invention relates to a method for controlling an adaptive vehicle headlight 2, wherein a first data memory 3 is allocated to the adaptive vehicle headlight 2, wherein the adaptive vehicle headlight 2 is configured to radiate different segmented light distributions with a resolution of at least 2 × 12, and for this purpose, as already mentioned, has light sources 2aa arranged in segments 2a, wherein each segment 2aa includes at least one LED light source, wherein the method comprises the following steps:

[0059] a) Provide the aforementioned adaptive vehicle headlight 2 and the aforementioned first data storage 3, and store multiple data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 on the first data storage 3, wherein each data record is pre-given a light intensity value IsegmLV for each segment 2a to implement the light distribution LVa1, LVa2, LVa3, LVa4, LVb1, LVb2, LVb3 to be radiated by the adaptive vehicle headlight 2, wherein the multiple data records include at least two sets of 3a and 3b data records, namely the first set of 3a low beam data records 3a1, 3a2, 3a3, ... Group 3a4 and Group 3b (high beam data records 3b1, 3b2, 3b3, 3b4) are used, wherein each group 3a and 3b includes at least one data record 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4. Each low beam data record 3a1, 3a2, 3a3, 3a4 is configured to generate a low beam distribution, and each high beam data record 3b1, 3b2, 3b3, 3b4 is configured to generate a high beam distribution. The design scheme for the corresponding light distribution is different for different data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4.

[0060] b) Connect the adaptive vehicle headlight 2 to the vehicle 1, wherein the vehicle 1 is configured to output control data 1a to control the adaptive vehicle headlight 2.

[0061] c) Control data 1a is transmitted from vehicle 1 to adaptive vehicle headlight 2, wherein adaptive vehicle headlight 2 has an internal computing unit 2c, which receives control data 1a and selects and calls data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, and 3b4 stored in the first data memory 3, hereinafter also referred to as active data records.

[0062] d) The light source 2aa arranged in segment 2a is manipulated by the computing unit 2c according to the active data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 in step c) using a configurable smoothing function Fg. The adaptive vehicle headlight 2 has an internal data memory 2d storing a light distribution transition adjustment algorithm LV-AL. The light distribution transition adjustment algorithm LV-AL can be pre-defined via interface 4, through which the internal data memory can be accessed externally. The configurable smoothing function Fg is specified by the light distribution transition adjustment algorithm LV-AL, and the application of the configurable smoothing function Fg is always performed in accordance with the following rules (see...). Figure 4 ):

[0063] d1) Determine the number of active data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4, where, with the aid of control data 1a, each active data record 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 is assigned a single weight wab1, wab2, wab3, wab4, wfern1, wfern2, wfern3 by percentage.

[0064] d2) By superimposing the light intensity values ​​IsegmLV derived from active data records 3a1, 3a2, 3a3, 3b1, 3b2, 3b3, and 3b4, and considering the corresponding weights, the target light intensity IsegmZ to be output for each segment 2a is specified.

[0065] d3) Output the target light intensity IsegmZ for each segment 2a, taking into account a pre-given maximum permissible rate of change of the light intensity radiated through the corresponding segment 2a. If the target light intensity IsegmZ exceeds a pre-given maximum permissible rate of change Var via a configurable smoothing function Fg, the target light intensity IsegmZ is temporarily manipulated such that it does not exceed the maximum permissible rate of change Var_max. Therefore, if necessary, a manipulated target light intensity IsegmZ' is derived from the target light intensity IsegmZ, which is temporarily lower than the actual target light intensity IsegmZ', and to the extent that it just does not exceed the maximum permissible rate of change Var_max, and for the duration until the unmanipulated target light intensity IsegmZ is reached.

[0066] In principle, inactive data records can also be detected by computing unit 2c. However, it would be beneficial if only active data records, i.e. those with a weight not equal to 0, were detected in order to reduce the amount of data.

[0067] Preferably, it can be stipulated that the sum of the percentage-based single weights wab1, wab2, wab3, wfern1, wfern2, and wfern3 in each group 3a and 3b does not exceed 100%, and the group weight values ​​wab_ges and wfern_ges are further allocated to each group 3a and 3b, with the sum of the group weight values ​​not exceeding 100%. The target light intensity of each segment 2a is specified according to step d2) by combining the percentage-based single weights wab1, wab2, wab3, wab4, wfern1, and wfern2 with their respective groups. The corresponding group weight values ​​wab_ges and wfern_ges are multiplied together, and the resulting weight values ​​wab1_res and wab2_res are calculated from them. The light intensity value IsegmLV, which can be derived from the active data record, is multiplied with the corresponding weight values ​​wab1_res and wab2_res. The light intensity values ​​obtained from each active data record 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, and 3b4 for each segment 2a are summed, and this sum is defined as the target light intensity for each segment 2a.

[0068] A brief example of one embodiment of the invention should be given: Assume the low beam distribution group has a weight of 60%, i.e., wab_ges = 0.6, and the high beam distribution group has a weight of 40%, i.e., wfern_ges = 0.4. Then, if, for example, the low beam distribution includes two effective light distributions that should be equally weighted (i.e., wab1 = 0.5 and wab2 = 0.5), the resulting intensities of the corresponding low beam distributions wab1_res and wab2_res will be obtained by multiplying by the weight wab_ges, i.e., resulting in a total weight of 0.5 x 0.6 = 0.3 = wab1_res = wab2_res for each. The weighting of the high beam distribution is done similarly, ensuring that the resulting total weight does not exceed the value 1. In this way, the individual light distributions can be elegantly superimposed with minimal computational cost. By specifying a smoothing function Fg, the degree of superposition and the transition from one light function to the next can be easily adapted to the needs of various vehicle manufacturers without fundamentally changing the light functions of the vehicle headlights.

[0069] In particular, it can be stipulated that all weight values ​​are selected such that the sum of the obtained weight values ​​wab1_res and wab2_res reaches 100%. Alternatively, it is conceivable that a weaker, normally lower, operation can be maintained, i.e., below 100%.

[0070] It can be stipulated that the first set of 3a near beam data records 3a1, 3a2, 3a3, and 3a4 include data records used to generate the following different near beam distributions LVA1, LVA2, LVA3, and LVA4:

[0071] I. First low beam distribution LVa1, where the first low beam distribution can be used as a standard low beam distribution, and preferably is a glare-free low beam.

[0072] II. Second low beam distribution LVA2, which has an increased effective distance in the right half of the light distribution compared to the first low beam distribution, in order to achieve an increased effective distance at the edge of the right lane for improved pedestrian recognition.

[0073] III. Third near-light distribution LVA3, wherein the third near-light distribution is broadened relative to the first near-light distribution and has horizontal light and dark boundaries.

[0074] IV. Fourth low beam distribution LVA4, which has an increased effective distance relative to the first low beam distribution by being shifted vertically upward relative to the first low beam distribution by an angle of at least 1°.

[0075] Furthermore, it can be stipulated that the second set of 3b high beam data records 3b1, 3b2, 3b3, and 3b4 includes data records used to generate the following different high beam distributions LVb1, LVb2, LVb3, and LVb4:

[0076] I. First high beam distribution LVb1, which can be used as the standard high beam distribution.

[0077] II. Second high-beam distribution LVb2, which has a reduced light intensity compared to the first high-beam distribution LVb2, but is operated such that the second high-beam distribution continues to at least satisfy the minimum statutory preset (Vorgaben).

[0078] III. Third High Beam Distribution LVb3: Compared to the first high beam distribution, this third high beam distribution increases light intensity or effective distance at high vehicle speeds, for example, by increasing the light cone (Lichtkegel) generated by the vehicle's headlights.

[0079] In practice, all light distributions are designed by experts to ensure that they meet applicable legal requirements.

[0080] according to Figure 3 It should be mentioned that the multiple data records include a third group of 3c data records, which involve a special light distribution that does not correspond to either near-beam or far-beam distributions.

[0081] Furthermore, it can be specified that the maximum time change rate Var_max of the target light intensity IsegmZ is varied within a pre-given upper and lower limit based on the detected control data 1a, wherein the actual change rate Var is selected such that the change in target light intensity from 0% to 100% occurs within a duration between 0.1s and 5s. Specifically, it can be specified that, in the event of an identified emergency traffic situation, the maximum time change rate Var_max is increased relative to normal operation. The permissible maximum change rate Var_max can also be variable, for example, by using control data. In emergency traffic situations, it can be beneficial if the permissible maximum change rate is chosen to be very high. This might be the case, for example, when dazzled by oncoming traffic, identifying / notifying of wild animals on the roadside, or identifying pedestrians.

[0082] Furthermore, it can be stipulated that the motor vehicle headlight 2 is set up to verify the rationality of the control data 1a and continuously perform the verification, wherein when a defective control data 1a is determined, it returns to safe operation, wherein the first low beam distribution LVa1 is preferably radiated.

[0083] In particular, it can be specified that control data 1a contains information about other traffic participants detected in the surrounding environment of vehicle 1, and in the case that active data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 contain high beam data records 3a1, 3a2, 3a3, 3a4, these high beam distributions are manipulated such that the segment 2a whose activation would cause glare to these traffic participants is manipulated at a lower intensity, preferably completely obscured.

[0084] Furthermore, it can be specified that the target light intensity IsegmZ for each segment 2a, based on step d3, can be temporarily manipulated to produce an output effect by replacing the target light intensity IsegmZ calculated according to step d3 with the effect light intensity. This temporary manipulation is limited to the duration of the effect / animation and is typically less than 5 seconds, such as a welcome light.

[0085] Furthermore, it can be stipulated that the target light intensity according to step d3 is manipulated based on the steering angle of vehicle 1, in that the target light distribution calculated according to step d3 is shifted in the horizontal direction based on the steering angle of vehicle 1, wherein this function is in Figure 4 This is referred to as move_hor. This allows turn signals to be implemented by shifting the light distribution to the left, for example, when turning left. In other words, the target light intensity shifts horizontally between adjacent segments. This process can also be called "bending".

[0086] In another aspect, the present invention relates to an adaptive vehicle headlight 2, which is configured for application in a method according to any one of the method claims, wherein the adaptive vehicle headlight 2 is configured to radiate different segmented light distributions with a resolution of at least 2×12, and for this purpose has light sources 2aa arranged in segments 2a, wherein each segment 2aa includes at least one LED light source.

[0087] The present invention further relates to a motor vehicle 1, the motor vehicle including an adaptive motor vehicle headlight 2 according to the present invention and a first data storage 3 allocated to the adaptive motor vehicle headlight 2, wherein a plurality of data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 are stored in the first data storage 3, wherein each data record is pre-given a light intensity value IsegmLV for each segment 2a to implement the light distribution LVa1, LVa2, LVa3, LVa4, LVb1, LVb2, LVb3 to be radiated by the adaptive motor vehicle headlight 2, wherein the plurality of data records includes at least two sets of 3a, 3b data records, namely the first set of 3a low beam data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4. a4 and the second group 3b high beam data records 3b1, 3b2, 3b3, 3b4, wherein each group 3a, 3b includes at least one data record 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4, wherein each low beam data record 3a1, 3a2, 3a3, 3a4 is configured to generate a low beam distribution and each high beam data record 3b1, 3b2, 3b3, 3b4 is configured to generate a high beam distribution, wherein the design scheme of the corresponding light distribution for different data records 3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4 is different, wherein the vehicle 1 is set up for environmental detection and for transmitting control data 1a to the vehicle headlights.

[0088] Figures 5a to 5c An exemplary schematic diagram of the light distribution that can be radiated using the method according to the invention is shown. Top views of the light distribution are shown here, projected onto a flat horizontal plane, typically a roadway. For example, Figure 5a The light distribution LVA1 is shown in detail, while other light distributions are not superimposed. Therefore, in this example, the weight wab1_res may be 100%. Figure 5c The light distribution LVb1 is shown with weights of, for example, wfern1_res of size 100%. Figure 5b The superposition of light distributions LVA1 and LVb1 is shown, where the weights wfern1_res and wab1_res can be, for example, 50% each.

[0089] This invention is not limited to the embodiments shown, but is defined by the entire scope of the claims. Various aspects of the invention or its embodiments can also be considered and combined with each other. Possible reference numerals in the claims are exemplary and used only for easier readability of the claims, and do not limit the scope of the claims.

Claims

1. A method for controlling an adaptive vehicle headlight (2), wherein a first data memory (3) is allocated to the adaptive vehicle headlight (2), wherein the adaptive vehicle headlight (2) is configured to radiate different segmented light distributions with a resolution of at least 2×12, and for this purpose has light sources (2aa) arranged in segments (2a), wherein each segment (2a) includes at least one LED light source, wherein the method comprises the following steps: a) Provide the aforementioned adaptive vehicle headlight (2) and the aforementioned first data storage (3), and store multiple data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) on the first data storage (3), wherein for each segment (2a) each data record, a light intensity value (IsegmLV) is pre-given for implementing the light distribution (LVa1, LVA2, LVA3, LVA4, LVb1, LVb2, LVb3) to be radiated by the adaptive vehicle headlight (2), wherein the multiple data records include at least two sets (3a, 3b) of data records, namely the first set (3a) of low beam data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4). Groups (3a, 3a2, 3a3, 3a4) and Group (3b) high beam data records (3b1, 3b2, 3b3, 3b4), wherein each group (3a, 3b) includes at least one data record (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4), wherein each low beam data record (3a1, 3a2, 3a3, 3a4) is configured to generate a low beam distribution and each high beam data record (3b1, 3b2, 3b3, 3b4) is configured to generate a high beam distribution, wherein the design scheme of the corresponding light distribution is different for different data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4). b) Connect the adaptive vehicle headlight (2) to the vehicle (1), wherein the vehicle (1) is configured to output control data (1a) for controlling the adaptive vehicle headlight (2). c) The control data (1a) is transmitted from the vehicle (1) to the adaptive vehicle headlight (2), wherein the adaptive vehicle headlight (2) has an internal computing unit (2c) that receives the control data (1a) and selects and calls data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) stored in the first data memory (3) according to the control data (1a), hereinafter also referred to as active data records. d) The computing unit (2c) controls the light sources (2aa) arranged in the segment (2a) using a configurable smoothing function (Fg) based on the active data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) in accordance with step c) of the active data records (3a1, 3a2, 3a3, 3a4), wherein the adaptive vehicle headlight (2) has an internal data memory (2d) storing a light distribution transition adjustment algorithm (LV-AL), wherein the light distribution transition adjustment algorithm (LV-AL) can be pre-given via an interface (4), by means of which the internal data memory (2d) can be accessed from the outside, and the configurable smoothing function (Fg) is specified by the light distribution transition adjustment algorithm (LV-AL), wherein the application of the configurable smoothing function (Fg) is performed in any case in accordance with the following rules: d1) Determine the number of active data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4), wherein each active data record (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) is assigned a single weight (wab1, wab2, wab3, wfern1, wfern2, wfern3) by means of the control data (1a). d2) The target light intensity (IsegmZ) to be output for each segment (2a) is specified by superimposing the light intensity values ​​(IsegmLV) derived from the active data records (3a1, 3a2, 3a3, 3b1, 3b2, 3b3, 3b4) with regard to the corresponding weights. d3) Output the target light intensity (IsegmZ) for each segment (2a) taking into account the pre-given maximum allowable rate of change of the light intensity radiated through the corresponding segment (2a), wherein if the target light intensity (IsegmZ, IsegmZ') exceeds the pre-given maximum allowable rate of change (Var) through the configurable smoothing function (Fg), the target light intensity (IsegmZ, IsegmZ') is temporarily manipulated to not exceed the maximum allowable rate of change (Var_max).

2. The method according to claim 1, wherein the sum of the percentage-based single weights (wab1, wab2, wab3, wfern1, wfern2, wfern3) in each group (3a, 3b) does not exceed 100%, and wherein the group weight values ​​(wab_ges, wfern_ges) are further assigned to each group (3a, 3b), and the sum of the group weight values ​​does not exceed 100%, wherein the target light intensity of each segment (2a) is specified according to step d2) by combining the percentage-based single weights (wab1, wab2, wab3, wab4, wfern1, wfern2) with the corresponding group weight value (wab_ges) of the group to which they belong. Multiply by b_ges and wfern_ges, and calculate the resulting weight values ​​(wab1_res and wab2_res) from them. The light intensity values ​​(IsegmLV) derived from the active data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) are multiplied by the corresponding weight values ​​(wab1_res and wab2_res). The light intensity values ​​derived from each active data record (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) for each segment (2a) are summed, and this sum is defined as the target light intensity for each segment (2a).

3. The method of claim 2, wherein all weight values ​​are selected such that the sum of the obtained weight values ​​(wab1_res, wab2_res) reaches 100% of the value.

4. The method according to any one of claims 1 to 3, wherein the first set (3a) of near beam data records (3a1, 3a2, 3a3, 3a4) comprises data records for generating the following different near beam distributions (LVa1, LVA2, LVA3, LVA4): I) First low beam distribution (LVa1), which can be used as the standard low beam distribution. II) A second low beam distribution (LVa2) has an increased effective distance in the right half of the light distribution compared to the first low beam distribution, in order to achieve an increased effective distance at the edge of the right lane for improved pedestrian recognition. III) Third near-light distribution (LVa3), which is broadened relative to the first near-light distribution and has horizontal light and dark boundaries. IV) Fourth low beam distribution (LVa4), which has an increased effective distance relative to the first low beam distribution by being shifted vertically upward by at least 1° relative to the first low beam distribution.

5. The method according to claim 4, wherein the first low beam distribution (LVa1) is a glare-free low beam.

6. The method according to claim 4, wherein the second set (3b) of high beam data records (3b1, 3b2, 3b3, 3b4) includes data records for generating the following different high beam distributions (LVb1, LVb2, LVb3, LVb4): I) First high beam distribution (LVb1), which can be used as the standard high beam distribution. II) A second high-beam distribution (LVb2), which has a reduced light intensity relative to the first high-beam distribution (LVb1), but is operated such that the second high-beam distribution continues to meet at least a minimum statutory preset. III) Third high beam distribution (LVb3), which increases the light intensity or the effective distance at high vehicle speeds compared to the first high beam distribution.

7. The method according to claim 6, wherein the third high beam distribution (LVb3) increases the light intensity or the effective distance at high vehicle speeds by increasing the light cone generated by the vehicle headlights compared to the first high beam distribution.

8. The method according to any one of claims 1 to 3, wherein the plurality of data records includes a third group (3c) of data records, the third group (3c) of data records relating to a special light distribution that does not correspond to either near-light distribution or far-light distribution.

9. The method according to any one of claims 1 to 3, wherein the maximum time rate of change (Var_max) of the target light intensity (IsegmZ) is varied within a predetermined upper and lower limit according to the detected control data (1a), wherein the actual rate of change (Var) is selected in any way such that the change of the target light intensity from 0% to 100% occurs within a duration between 0.1s and 5s.

10. The method of claim 9, wherein, in the event of an identified emergency traffic situation, the maximum rate of change over time (Var_max) is increased relative to normal operation.

11. The method according to claim 4, wherein the vehicle headlight (2) is configured to verify the reasonableness of the control data (1a) and continuously perform the verification, wherein when a defective control data (1a) is determined, the system returns to safe operation.

12. The method of claim 11, wherein the first near-light distribution (LVa1) is radiated during the safe operation.

13. The method according to any one of claims 1 to 3, wherein the control data (1a) contains information about other traffic participants detected in the surrounding environment of the motor vehicle (1), and in the case that the active data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) contain high beam data records (3b1, 3b2, 3b3, 3b4), these high beam distributions are manipulated such that segments (2a) whose activation would cause glare to these traffic participants are manipulated at a lower intensity.

14. The method of claim 13, wherein the high beam distribution is manipulated such that its activation would completely obscure the segment (2a) that would cause glare to these traffic participants.

15. The method according to any one of claims 1 to 3, wherein the target light intensity (IsegmZ) for each segment (2a) according to step d3) can be temporarily manipulated to produce an effect by replacing the target light intensity (IsegmZ) calculated according to step d3) with the effect light intensity.

16. The method according to any one of claims 1 to 3, wherein the target light intensity according to step d3) is manipulated according to the steering angle of the motor vehicle (1) by means of a horizontal displacement (move_hor) of the target light distribution calculated according to step d3) according to the steering angle of the motor vehicle (1).

17. An adaptive vehicle headlight (2) configured for application in any one of claims 1 to 16, wherein the adaptive vehicle headlight (2) is configured to radiate different segmented light distributions with a resolution of at least 2 × 12, and for this purpose has light sources (2aa) arranged in segments (2a), wherein each segment (2a) includes at least one LED light source.

18. A motor vehicle (1) comprising an adaptive motor vehicle headlight (2) according to claim 17 and a first data storage (3) allocated to the adaptive motor vehicle headlight (2), wherein a plurality of data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) are stored in the first data storage (3), wherein for each segment (2a), each data record is pre-given a light intensity value (IsegmLV) for implementing the light distribution (LVa1, LVA2, LVA3, LVA4, LVb1, LVb2, LVb3) to be radiated by the adaptive motor vehicle headlight (2), wherein the plurality of data records comprises at least two sets (3a, 3b) of data records, namely a first set (3a) of low beam data records (3a1, 3a2, 3b4, 3b1, 3b2, 3b3, 3b4). Group 3a3, 3a4) and Group 2 (3b) high beam data records (3b1, 3b2, 3b3, 3b4), wherein each group (3a, 3b) includes at least one data record (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4), wherein each low beam data record (3a1, 3a2, 3a3, 3a4) is configured to generate a low beam distribution and each high beam data record (3b1, 3b2, 3b3, 3b4) is configured to generate a high beam distribution, wherein the design scheme of the corresponding light distribution for different data records (3a1, 3a2, 3a3, 3a4, 3b1, 3b2, 3b3, 3b4) is different, wherein the motor vehicle (1) is set up for environmental detection and for transmitting control data (1a) to the headlights of the motor vehicle.

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