Lamp brightness adjustment method, control device, and lamp brightness adjustment system

Abstract

The present application provides a lamp brightness adjustment method, a control device, and a lamp brightness adjustment system. The lamp brightness adjustment method comprises: receiving an ambient light signal; extracting an ambient light intensity value from the ambient light signal; comparing the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; generating a dimming instruction on the basis of the first comparison result; and sending the dimming instruction to an execution component, the execution component being configured to adjust the brightness of a lamp on the basis of the dimming instruction. According to the lamp brightness adjustment method, by extracting the ambient light intensity value, and adjusting the brightness of the lamp on the basis of the comparison result between the ambient light intensity value and the preset intensity threshold, the brightness of the lamp can be adjusted when ambient brightness changes, achieving a high resolution of information displayed by the lamp under different ambient brightness conditions, effectively balancing the relationship between interaction effects and power consumption, and increasing the energy efficiency ratio.

Description

Lamp brightness adjustment method, control device and lamp brightness adjustment system Technical Field

[0001] The present application relates to the field of vehicle lighting technology, and in particular to a lamp brightness adjustment method, a control device, and a lamp brightness adjustment system. Background Art

[0002] In the era of new energy and intelligent technology, the automotive industry is trending towards intelligent and interactive features, and this translates into the same demand for automotive lighting. The emergence of interactive lighting offers the potential for information display. It can display more images, convey information in a more concrete way, and convey more information to vehicles and pedestrians.

[0003] However, interactive lamps have a larger display range and light up more pixels, which in turn brings more power consumption. At a time when battery life is emphasized, how to balance the relationship between interactive effects and power consumption and design a system with high energy efficiency has become a top priority. Summary of the Invention

[0004] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0005] A method for adjusting the brightness of a lamp includes: receiving an ambient light signal; extracting an ambient light intensity value from the ambient light signal; comparing the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; generating a dimming instruction based on the first comparison result; and sending the dimming instruction to an execution component, which is configured to adjust the brightness of the lamp based on the dimming instruction.

[0006] The above-mentioned lamp brightness adjustment method extracts the ambient light intensity value and adjusts the lamp brightness according to the comparison result of the ambient light intensity value and the preset intensity threshold. It can adjust the lamp brightness when the environment changes from bright to dark, effectively balancing the relationship between interaction effect and power consumption, and improving energy efficiency.

[0007] As an optional implementation, in an embodiment of the present application, after receiving the ambient light signal, the lamp brightness adjustment method also includes: extracting a duration from the ambient light signal, where the duration refers to the duration of the ambient light signal at the current ambient light intensity value; comparing the duration with a preset time threshold to obtain a second comparison result; generating the dimming instruction based on the first comparison result and the second comparison result; and sending the dimming instruction to the execution component, which is configured to adjust the lamp brightness according to the dimming instruction.

[0008] As an optional implementation, in an embodiment of the present application, the preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the lamp brightness is adjusted to the first brightness value.

[0009] As an optional implementation, in an embodiment of the present application, the preset intensity threshold also includes a second intensity threshold, and the preset time threshold also includes a second time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, then the lamp brightness is adjusted to the second brightness value; wherein, the first intensity threshold is less than the second intensity threshold, and the first brightness value is less than the second brightness value.

[0010] As an optional implementation, in an embodiment of the present application, the preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is greater than the third intensity threshold, and the duration is greater than the third time threshold, then the lamp brightness is adjusted to a third brightness value; wherein, the first intensity threshold is less than the third intensity threshold, and the first brightness value is less than the third brightness value.

[0011] As an optional implementation, in an embodiment of the present application, the lamp has a maximum brightness value, and the dimming instruction includes an adjustment coefficient; the relationship between the lamp brightness and the maximum brightness value is: lamp brightness = L × maximum brightness value; wherein L = (X / A)^2.2, A is a positive integer, and X is any integer in [0, A-1].

[0012] A control device includes: a signal receiving module configured to receive an ambient light signal; a signal extraction module configured to extract an ambient light intensity value from the ambient light signal; a comparison module configured to compare the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; an instruction generation module configured to generate a dimming instruction based on the first comparison result; and a signal sending module configured to send the dimming instruction to the execution component, which is configured to adjust the brightness of the lamp based on the dimming instruction.

[0013] As an optional implementation, in an embodiment of the present application, the signal extraction module is further configured to extract a duration from the ambient light signal, where the duration refers to the duration of the ambient light signal at the current ambient light intensity value; the comparison module is further configured to compare the duration with a preset time threshold to obtain a second comparison result; and the instruction generation module is further configured to generate a dimming instruction based on the first comparison result and the second comparison result.

[0014] As an optional implementation, in an embodiment of the present application, the preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; if the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to the first brightness value.

[0015] As an optional implementation, in an embodiment of the present application, the preset intensity threshold also includes a second intensity threshold, and the preset time threshold also includes a second time threshold; if the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, then the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a second brightness value; wherein, the first intensity threshold is less than the second intensity threshold, and the first brightness value is less than the second brightness value.

[0016] As an optional implementation, in an embodiment of the present application, the preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; if the ambient light intensity value is greater than the third intensity threshold, and the duration is greater than the third time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a third brightness value; wherein, the first intensity threshold is less than the third intensity threshold, and the first brightness value is less than the third brightness value.

[0017] A lamp brightness adjustment system includes: a control device, the control device is configured to receive an ambient light signal and generate a dimming instruction based on the ambient light signal; an execution component, the execution component includes a current regulation module and a display module connected to each other, the current regulation module is capable of controlling the current flowing through the display module; the current regulation module is configured to change the current flowing through the display module according to the dimming instruction.

[0018] As an optional implementation, in the embodiment of the present application, the lamp brightness adjustment system further includes: a power driving module connected to the display module, for providing a driving voltage for the display module.

[0019] As an optional implementation, in an embodiment of the present application, the display module includes light-emitting devices arranged in an array.

[0020] As an optional implementation, in an embodiment of the present application, the lamp brightness adjustment system also includes: a multi-channel scanning module, which is connected to the power drive module, the display module and the control device, and the multi-channel scanning module is used to scan the light-emitting devices arranged in an array.

[0021] As an optional implementation, in an embodiment of the present application, the current regulation module includes a multi-channel constant current driving module, and the operating frequency of the multi-channel constant current driving module is greater than the operating frequency of the multi-channel scanning module.

[0022] As an optional implementation, in an embodiment of the present application, the lamp brightness adjustment system is connected to a brightness sensor; the brightness sensor is used to collect ambient light signals and send the ambient light signals to the control device.

[0023] As an optional implementation, in an embodiment of the present application, the brightness sensor includes a rainfall and light sensor.

[0024] As an optional implementation, in an embodiment of the present application, the lamp brightness adjustment system is connected to the body domain controller, and the body domain controller is connected to the brightness sensor; the brightness sensor is used to collect ambient light signals and send the ambient light signals to the body controller, which is then forwarded to the control device by the body controller.

[0025] As an optional implementation, in an embodiment of the present application, CAN bus communication is adopted between the brightness sensor and the vehicle body domain controller.

[0026] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0028] FIG1 is a flowchart of a method for adjusting the brightness of a lamp provided in an embodiment of the present application.

[0029] FIG2 is a schematic diagram of a lamp brightness adjustment process in an embodiment of the present application.

[0030] FIG3 is a schematic diagram of a gamma2.2 curve in an embodiment of the present application.

[0031] FIG4 is a schematic structural diagram of a lamp brightness adjustment system provided in an embodiment of the present application.

[0032] FIG5 is a schematic structural diagram of a lamp brightness adjustment system provided in another embodiment of the present application.

[0033] FIG6 is a schematic structural diagram of a lamp brightness adjustment system provided in yet another embodiment of the present application.

[0034] FIG7 is a structural diagram of the connection between a lamp brightness adjustment system and a brightness sensor provided in an embodiment of the present application.

[0035] FIG8 is a structural diagram of the connection between the lamp brightness adjustment system provided by an embodiment of the present application and the vehicle body domain controller and the brightness sensor.

[0036] In the figure: 100-lamp brightness adjustment system; 10-control device; 20-executor; 21-display module; 22-current regulation module; 30-power drive module; 40-multi-channel scanning module; 50-brightness sensor; 60-body domain controller. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0041] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0043] As mentioned in the background technology, the emergence of interactive lamps can convey more information to vehicles or pedestrians, but it also comes with higher energy consumption. At a time when battery life is emphasized, how to balance the relationship between interactive effects and power consumption is a difficult problem that needs to be solved urgently.

[0044] In order to solve the above problems, the present application provides a method for adjusting the brightness of a lamp. The following is an exemplary description of the method for adjusting the brightness of a lamp provided by the present application:

[0045] As an optional implementation method, please refer to Figure 1. The present application discloses a method for adjusting the brightness of a lamp, including: receiving an ambient light signal; extracting an ambient light intensity value from the ambient light signal; comparing the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; generating a dimming instruction based on the first comparison result; and sending the dimming instruction to an execution component, which is configured to adjust the brightness of the lamp according to the dimming instruction.

[0046] In this embodiment, step S101 is to receive an ambient light signal. For example, the ambient light signal can be measured by an optical sensor. Specifically, this application is applied to an in-vehicle interactive lamp, so the ambient light signal can be collected by a rain and light sensor built into the vehicle body.

[0047] In step S103, the ambient light intensity value is extracted from the ambient light signal. The physical quantity reflecting light intensity is illuminance, whose unit is lux (lx). By extracting the ambient light intensity value from the ambient light signal, the light intensity information of the current environment can be obtained.

[0048] In step S105, the ambient light intensity value is compared with a preset intensity threshold to obtain a first comparison result. The preset intensity threshold can be a single value or multiple values ​​set in a gradient. The first comparison result can be that the ambient light intensity value is greater than a preset intensity threshold, less than a preset intensity threshold, or between two preset intensity thresholds. By comparing the ambient light intensity value with the preset intensity threshold, the current ambient light intensity level can be determined, and the impact on the information displayed in the interactive lighting fixture.

[0049] In step S107, a dimming instruction is generated according to the first comparison result. By comparing the ambient light intensity value with the preset threshold value, it can be determined what kind of adjustment to make to the current lamp based on the comparison result, such as brightening, dimming or keeping the brightness unchanged. Specific dimming information can be stored in the dimming instruction. For example, in a darker environment, the brightness of the lamp does not need to be too high to achieve a high-resolution display effect. At this time, the brightness of the lamp can be appropriately reduced to reduce energy consumption. For example, when the ambient light has only changed slightly, although the ambient light intensity value has changed, it has not exceeded the threshold value, and there is no need to adjust the brightness of the lamp. For example, when suddenly entering an environment with higher brightness, the original lamp brightness is not enough to display clear interactive images or information, and the brightness of the lamp needs to be increased to adapt to the brightness changes of the external environment.

[0050] In step S109, the dimming instruction is sent to an execution component, which is configured to adjust the brightness of the lamp according to the dimming instruction. The execution component can be the interactive lamp itself, or a working component for controlling the brightness of the interactive lamp. The lamp can be adjusted by adjusting the voltage or current flowing through the lamp, which is not limited in this application.

[0051] The above-mentioned lamp brightness adjustment method extracts the ambient light intensity value and adjusts the lamp brightness according to the comparison result of the ambient light intensity value and the preset intensity threshold. It can adjust the lamp brightness when the environment changes from bright to dark, and achieve high resolution of the lamp display information in different light and dark environments, which not only ensures the display effect but also saves energy.

[0052] In some embodiments, after receiving the ambient light signal, the method further includes:

[0053] Extracting a duration from the ambient light signal, where the duration refers to a duration of the ambient light signal at a current ambient light intensity value;

[0054] Comparing the duration with a preset time threshold to obtain a second comparison result;

[0055] generating the dimming instruction according to the first comparison result and the second comparison result;

[0056] The dimming instruction is sent to the execution component, and the execution component is configured to adjust the brightness of the lamp according to the dimming instruction.

[0057] Specifically, in this embodiment, in addition to obtaining the ambient light intensity value, it is also necessary to extract the duration. Duration refers to the duration of the ambient light signal at the current ambient light intensity value. This is used to determine whether the current ambient light intensity value is continuous or transient. For example, when a vehicle passes through a long cave, the extracted ambient light intensity value will decrease and the duration will be longer. On the other hand, when a vehicle passes under a bridge, although the extracted ambient light intensity value decreases, the duration is very short. In both cases, it is obviously not appropriate to use the same adjustment method for the lamp brightness.

[0058] The preset time threshold may include a single time length value, or may include multiple time length values ​​set by gradients, which is not limited in this application.

[0059] After comparing the duration with the preset time threshold, a second comparison result can be obtained. A dimming instruction is generated according to the first comparison result and the second comparison result, and the dimming instruction is sent to the execution component to adjust the brightness of the lamp.

[0060] In some embodiments, the preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the lamp brightness is adjusted to the first brightness value.

[0061] For example, the first intensity threshold is 1000 lx, and the first time threshold is 2 seconds. That is, when the ambient light intensity is less than 1000 lx and lasts for more than 2 seconds, the lamp brightness is adjusted to the first brightness value. Specifically, the first brightness value can be 30%-50% of the lamp's maximum brightness. For example, the first brightness value can be 30%, 40%, or 50% of the lamp's maximum brightness. In this embodiment, the first brightness value is 50% of the lamp's maximum brightness value.

[0062] In some embodiments, the preset intensity threshold also includes a second intensity threshold, and the preset time threshold also includes a second time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, then the lamp brightness is adjusted to the second brightness value; wherein, the first intensity threshold is less than the second intensity threshold, and the first brightness value is less than the second brightness value.

[0063] For example, the second intensity threshold can be 4000 lx, and the second time threshold can be 0.5s. That is, when the ambient light intensity is greater than 1000 lx and less than 4000 lx, and the duration is greater than 0.5s, the lamp brightness is adjusted to the second brightness value. Specifically, the second brightness value can be 70%-80% of the lamp's maximum brightness value. For example, the second brightness value can be 70%, 75%, or 80% of the lamp's maximum brightness value. In this embodiment, the second brightness value is 70% of the lamp's maximum brightness value.

[0064] Optionally, in some embodiments, a buffer intensity threshold, such as 2000 lx, can be added between the first and second intensity thresholds. This means that when the ambient light intensity exceeds the first intensity threshold by a certain amount (but still less than 2000 lx), a new dimming command will not be immediately triggered to maintain the existing lamp brightness. Instead, a new dimming command will be triggered to adjust the lamp brightness to the second brightness value only after the ambient light intensity exceeds 2000 lx for a duration greater than 0.5 seconds. This configuration can prevent eye discomfort caused by frequent changes in lamp brightness at boundary ambient light levels.

[0065] Optionally, in some embodiments, the preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; the lamp brightness adjustment method also includes: if the ambient light intensity value is greater than the third intensity threshold, and the duration is greater than the third time threshold, then the lamp brightness is adjusted to a third brightness value; wherein, the first intensity threshold is less than the third intensity threshold, and the first brightness value is less than the third brightness value.

[0066] For example, the third intensity threshold can be 7000 lx, and the third time threshold can be 0.5s. When the ambient light intensity becomes very high, if the lamp brightness is not increased in time, the display effect of the interactive image will be affected. Therefore, when the ambient light intensity exceeds 7000 lx and lasts for more than 0.5s, the lamp brightness is adjusted to maximum brightness to improve the contrast of the displayed image and make the information displayed by the lamp more clearly visible.

[0067] For example, as shown in FIG2 , a process of adjusting the brightness (light intensity) of a lamp is shown, where Lamb represents the ambient light intensity and Td represents the duration of the ambient light intensity.

[0068] Optionally, in one embodiment, the dimming instruction includes a dimming coefficient, and the relationship between the lamp brightness and the maximum brightness value is: lamp brightness = L × maximum brightness value; where L = (X / A)^2.2, and X is any integer in [0, A].

[0069] Specifically, when adjusting lamp brightness, a gamma2.2 curve is used to gradually increase or decrease the lamp brightness to better match the human eye's perception of brightness changes. In this embodiment, the dimming accuracy is 5 bits, A = 31, then L = (X / 31)^2.2, where X is an integer in the range [0, 31]. The corresponding relationship between X and L is shown in the table below, and the gamma2.2 curve is shown in Figure 3.

[0070] It's important to note that when using the gamma2.2 curve to adjust lamp brightness, it's not necessary to precisely adjust the brightness to 50% or 70% of the maximum value. Instead, adjust to a value closest to the target brightness. For example, if the first brightness value is 50% of the maximum brightness, simply adjust X to 23, and the L value to 51.86%.

[0071] By using the above-mentioned brightness adjustment algorithm, a natural and excessive brightness change is achieved without causing abrupt photosensitive stimulation to the human eye.

[0072] Another aspect of the present application also discloses a control device, including: a signal receiving module, configured to receive an ambient light signal; a signal extraction module, configured to extract an ambient light intensity value from the ambient light signal; a comparison module, configured to compare the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; an instruction generation module, configured to generate a dimming instruction according to the first comparison result; a signal sending module, configured to send the dimming instruction to the execution component, and the execution component is configured to adjust the brightness of the lamp according to the dimming instruction.

[0073] In some embodiments, the signal extraction module is further configured to extract a duration from the ambient light signal, where the duration refers to the duration of the ambient light signal at the current ambient light intensity value; the comparison module is further configured to compare the duration with a preset time threshold to obtain a second comparison result; and the instruction generation module is further configured to generate a dimming instruction based on the first comparison result and the second comparison result.

[0074] Optionally, the control device can be a single-chip microcomputer, a microcontroller unit (MCU), or other processor with information storage and processing capabilities. Specifically, by providing a signal receiving module, a signal extraction module, a comparison module, an instruction generation module, and a signal transmission module within the control device, the ambient light signal is processed to generate a corresponding dimming instruction, which is then sent to an execution component to adjust the brightness of the lamp. This control device can apply the lamp brightness adjustment method described in any of the aforementioned embodiments.

[0075] In some embodiments, the preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; if the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to the first brightness value.

[0076] In some embodiments, the preset intensity threshold also includes a second intensity threshold, and the preset time threshold also includes a second time threshold; if the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a second brightness value; wherein the first intensity threshold is less than the second intensity threshold, and the first brightness value is less than the second brightness value.

[0077] In some embodiments, the preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; if the ambient light intensity value is greater than the third intensity threshold, and the duration is greater than the third time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a third brightness value; wherein, the first intensity threshold is less than the third intensity threshold, and the first brightness value is less than the third brightness value.

[0078] As shown in Figure 4, another aspect of the present application also discloses a lamp brightness adjustment system 100, including: a control device 10, the control device 10 is used to receive an ambient light signal and generate a dimming instruction based on the ambient light signal; an execution component 20, the execution component 20 includes a current regulation module 22 and a display module connected to each other, the current regulation module 22 can control the current flowing through the display module; the current regulation module 22 is used to change the current flowing through the display module according to the dimming instruction.

[0079] Specifically, the control device 10 may be the control device 10 in the previous embodiment, which is configured to process the ambient light signal and generate a dimming instruction based on the ambient light signal.

[0080] The execution component 20 includes a current regulating module 22 and a display module that are interconnected, wherein the display module can be a light-emitting device arranged in an array, for example, the light-emitting device can be an LED, and the current regulating module 22 can adjust the current flowing through the LED, thereby adjusting the luminous intensity of the LED, and then adjusting the brightness of the lamp.

[0081] In some embodiments, as shown in FIG5 , the lamp brightness adjustment system 100 further includes a power driving module 30 , which is connected to the display module and is used to provide a driving voltage for the display module.

[0082] Specifically, the power driver module 30 can be supplied with voltage from an external power source and can step down the voltage provided by the external power source to meet the voltage requirements of the display module. For example, the power driver module 30 can be a buck driver. The buck driver can step down the voltage provided by the external power source to a standard 5V voltage.

[0083] In some embodiments, as shown in Figure 6, the lamp brightness adjustment system 100 also includes a multi-channel scanning module 40, which is connected to the power drive module 30, the display module and the control device 10. The multi-channel scanning module 40 is used to scan the light-emitting devices arranged in an array.

[0084] Specifically, the control device 10 is connected to the multi-channel scanning module 40 via an SPI bus. Under the control of the control device 10, the multi-channel scanning module 40 provides positive voltage to LEDs controlled by different channels within a unit time, thereby illuminating LEDs in different areas. For example, the multi-channel scanning module 40 can be a 16-channel scanning module.

[0085] The above-mentioned lamp brightness adjustment system 100 uses a multi-pixel display and a line scanning control scheme to display part of the area in a time-sharing manner, which greatly reduces the number of control chips used and can achieve independent control of a single chip at the pixel level, thereby achieving delicate expression of information interaction.

[0086] Optionally, in some embodiments, the current regulating module 22 includes a multi-channel constant current driving module, and the operating frequency of the multi-channel constant current driving module is greater than the operating frequency of the multi-channel scanning module 40 .

[0087] Specifically, the control device 10 is in communication with the current regulation module 22. Under the control of the control device 10, the current regulation module 22 regulates the operating current flowing through the LED. For example, the current regulation module 22 is a multi-channel constant current driver module. The control device 10 and the multi-channel constant current driver module are connected via an SPI bus. The multi-channel constant current driver module dims the display module according to the dimming command. Specifically, the multi-channel constant current driver module can be a 48-channel constant current driver module, whose dimming frequency is greater than the line scanning frequency of the 16-channel line scanning module.

[0088] In some embodiments, as shown in FIG. 7 , the lamp brightness adjustment system 100 is connected to a brightness sensor 50 ; the brightness sensor 50 is used to collect ambient light signals and send the ambient light signals to the control device 10 .

[0089] For example, brightness sensor 50 can be a rain and light sensor installed on the vehicle, or a sensor specifically used for brightness measurement, which is not limited in this application. After brightness sensor 50 collects the ambient light signal, it sends the ambient light signal to control device 10, which further processes the ambient light signal and generates a dimming instruction based on the current ambient light signal.

[0090] In some embodiments, as shown in FIG8 , the lamp brightness adjustment system 100 is connected to the vehicle body domain controller 60 , and the vehicle body domain controller 60 is connected to the brightness sensor 50 ; the brightness sensor 50 is used to collect ambient light signals and send the ambient light signals to the vehicle body domain controller 60 , which is then forwarded to the control device 10 by the vehicle body domain controller 60 .

[0091] The vehicle body domain controller 60 coordinates communication and data transmission between modules to achieve unified management and control of the vehicle body system. When the brightness sensor 50 collects an ambient light signal, it first sends the signal to the vehicle body domain controller 60, which then fuses the ambient light signal with the vehicle body data to provide more comprehensive data to the control device 10.

[0092] In some embodiments, the KL30 branch is used to power the control device 10 and the power driver module 30. Specifically, the power driver module 30 uses a power BUCK driver module to reduce the voltage provided by the KL30 branch to 5V, and then provides positive voltage to the LEDs controlled by different channels within a unit time through the 16-channel scanning module.

[0093] In some embodiments, the brightness sensor 50 and the vehicle body domain controller 60 communicate with each other via a CAN bus.

[0094] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0095] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A method for adjusting the brightness of a lamp, comprising: receiving ambient light signals; extracting an ambient light intensity value from the ambient light signal; Comparing the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; generating a dimming instruction according to the first comparison result; The dimming instruction is sent to an execution component, and the execution component is configured to adjust the brightness of the lamp according to the dimming instruction.

2. The method for adjusting the brightness of a lamp according to claim 1, wherein: After receiving the ambient light signal, the lamp brightness adjustment method further includes: Extracting a duration from the ambient light signal, where the duration refers to a duration of the ambient light signal at a current ambient light intensity value; Comparing the duration with a preset time threshold to obtain a second comparison result; generating the dimming instruction according to the first comparison result and the second comparison result; The dimming instruction is sent to the execution component, and the execution component is configured to adjust the brightness of the lamp according to the dimming instruction.

3. The method for adjusting the brightness of a lamp according to claim 2, wherein: The preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; The lamp brightness adjustment method further includes: If the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the brightness of the lamp is adjusted to a first brightness value.

4. The method for adjusting the brightness of a lamp according to claim 3, wherein: The preset intensity threshold further includes a second intensity threshold, and the preset time threshold further includes a second time threshold; The lamp brightness adjustment method further includes: If the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, adjusting the brightness of the lamp to a second brightness value; The first intensity threshold is smaller than the second intensity threshold, and the first brightness value is smaller than the second brightness value.

5. The method for adjusting the brightness of a lamp according to claim 3, wherein: The preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; The lamp brightness adjustment method further includes: If the ambient light intensity value is greater than the third intensity threshold, and the duration is greater than the third time threshold, adjusting the brightness of the lamp to a third brightness value; The first intensity threshold is smaller than the third intensity threshold, and the first brightness value is smaller than the third brightness value.

6. The method for adjusting the brightness of a lamp according to any one of claims 1 to 5, wherein: The lamp has a maximum brightness value, and the dimming instruction includes an adjustment coefficient; the relationship between the lamp brightness and the maximum brightness value is: lamp brightness = L × maximum brightness value; Wherein, L=(X / A)^2.2, A is a positive integer, and X is any integer in [0, A-1].

7. A control device, applying the lamp brightness adjustment method according to any one of claims 1 to 6, comprising: a signal receiving module, configured to receive an ambient light signal; a signal extraction module, configured to extract an ambient light intensity value from the ambient light signal; a comparison module, configured to compare the ambient light intensity value with a preset intensity threshold to obtain a first comparison result; an instruction generating module, configured to generate a dimming instruction according to the first comparison result; The signal sending module is configured to send the dimming instruction to the execution component, and the execution component is configured to adjust the brightness of the lamp according to the dimming instruction.

8. The control device according to claim 7, wherein: The signal extraction module is further configured to extract a duration from the ambient light signal, where the duration refers to a duration of the ambient light signal at a current ambient light intensity value; The comparison module is further configured to compare the duration with a preset time threshold to obtain a second comparison result; The instruction generation module is further configured to generate a dimming instruction according to the first comparison result and the second comparison result.

9. The control device according to claim 8, wherein: The preset intensity threshold includes a first intensity threshold, and the preset time threshold includes a first time threshold; If the ambient light intensity value is less than the first intensity threshold and the duration is greater than the first time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a first brightness value.

10. The control device according to claim 9, wherein: The preset intensity threshold further includes a second intensity threshold, and the preset time threshold further includes a second time threshold; If the ambient light intensity value is greater than the first intensity threshold and less than the second intensity threshold, and the duration is greater than the second time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a second brightness value; The first intensity threshold is smaller than the second intensity threshold, and the first brightness value is smaller than the second brightness value.

11. The control device according to claim 9, wherein: The preset intensity threshold includes a third intensity threshold, and the preset time threshold includes a third time threshold; If the ambient light intensity value is greater than the third intensity threshold and the duration is greater than the third time threshold, the control device is configured to: send a dimming instruction to the execution component to adjust the brightness of the lamp to a third brightness value; The first intensity threshold is smaller than the third intensity threshold, and the first brightness value is smaller than the third brightness value.

12. A lamp brightness adjustment system, comprising: The control device according to any one of claims 7 to 11, wherein the control device is configured to receive an ambient light signal and generate a dimming instruction based on the ambient light signal; an execution component, the execution component including a current regulating module and a display module connected to each other, the current regulating module being capable of controlling the current flowing through the display module; The current regulating module is configured to change the current flowing through the display module according to the dimming instruction.

13. The lamp brightness adjustment system according to claim 12, wherein: The lamp brightness adjustment system also includes: A power driving module is connected to the display module, and the power driving module is configured to provide a driving voltage for the display module.

14. The lamp brightness adjustment system according to claim 13, wherein: The display module includes light emitting devices arranged in an array.

15. The lamp brightness adjustment system according to claim 14, wherein: The lamp brightness adjustment system also includes: A multi-channel scanning module is connected to the power drive module, the display module and the control device, and is configured to scan the light-emitting devices arranged in an array.

16. The lamp brightness adjustment system according to claim 15, wherein: The current regulating module includes a multi-channel constant current driving module, and the operating frequency of the multi-channel constant current driving module is greater than the operating frequency of the multi-channel scanning module.

17. The lamp brightness adjustment system according to any one of claims 12 to 16, wherein: The lamp brightness adjustment system is connected to a brightness sensor; the brightness sensor is configured to collect an ambient light signal and send the ambient light signal to the control device. The lamp brightness adjustment system according to claim 17 , wherein the brightness sensor comprises a rainfall and light sensor.

19. The lamp brightness adjustment system according to any one of claims 12 to 16, wherein: The lamp brightness adjustment system is connected to the vehicle body domain controller, and the vehicle body domain controller is connected to the brightness sensor; The brightness sensor is configured to collect an ambient light signal and send the ambient light signal to the vehicle body controller, which then forwards the signal to the control device.

20. The lamp brightness adjustment system according to claim 19, wherein the brightness sensor and the vehicle body domain controller communicate using a CAN bus.

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