Automobile starry sky ceiling lamp dynamic control system

Abstract

The utility model provides a dynamic control system for an automobile starry sky ceiling lamp, and relates to the technical field of automobile lamp control. The control system comprises an automobile battery, an automobile body controller and an automobile starry sky ceiling lamp control device. A power supply module, a communication module, an MCU control module, an LED driving module and N LED loads are integrated in the automobile starry sky ceiling lamp control device. The input end of the power module is electrically connected with the output end of an automobile battery, and the output end of the power module is electrically connected with the LED driving module and the MCU control module. The communication module is electrically connected with the vehicle body controller and the MCU control module. The MCU control module is electrically connected with the LED driving module; and the LED driving module is electrically connected with the N LED loads respectively. Power consumption and heat dissipation are considered in the design of the whole control system, the stability and durability of long-time operation are ensured, and the diversity of the dynamic control effect of the automobile starry sky ceiling lamp is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting control technology, and in particular to a dynamic control system for automotive starry sky dome lights. Background Technology

[0002] With the rapid development of automotive lighting, new design concepts and pursuits are constantly emerging, and the use of matrix chips has become a trend. However, most current solutions employ linear approaches, which result in higher heat generation in the circuitry. Furthermore, current automotive starry sky dome lights typically utilize projection or lens technology, displaying mostly static starry sky patterns, leading to a relatively limited variety of designs.

[0003] The aforementioned problems urgently need to be addressed. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic control system for automotive starry sky dome lights, which aims to solve the problems of high heat in the circuit and static starry sky patterns in the existing linear schemes, resulting in a relatively monotonous starry sky pattern.

[0005] This utility model provides a dynamic control system for an automotive starry sky dome light. The control system includes: an automotive battery, a body controller, and an automotive starry sky dome light control device. The automotive starry sky dome light control device integrates a power module, a communication module, an MCU control module, an LED driver module, and N LED loads. The input terminal of the power module is electrically connected to the output terminal of the automotive battery, and the output terminal of the power module is electrically connected to the LED driver module and the MCU control module respectively, for supplying power to the LED driver module and the MCU control module. The communication module is electrically connected to the body controller and the MCU control module respectively, and the communication module is used to transmit the control signals sent by the body controller to the MCU control module. The MCU control module is electrically connected to the LED driver module, and the MCU control module is used to send data for lighting the LED loads to the LED driver module based on the control signals sent by the body controller. The LED driver module is electrically connected to the N LED loads respectively, for outputting PWM waves to light up the LED loads.

[0006] Furthermore, the LED driver module integrates a driver chip, the model of which is TPS92662A.

[0007] Furthermore, the N LED loads are grouped according to the channels of the LED driver module, and the grouped LED loads are electrically connected to the LED driver module respectively.

[0008] Furthermore, the communication module integrates a CAN chip.

[0009] Furthermore, the MCU control module integrates a central processing unit and a working mode switching module. The input terminal of the working mode switching module is electrically connected to the output terminal of the communication module, and the output terminal of the working mode switching module is electrically connected to the central processing unit. The working mode switching module is used to switch the working mode of the car starry sky dome light to normal mode or constellation mode based on the control signal sent by the body controller.

[0010] Furthermore, the MCU control module also integrates a memory, which is electrically connected to the central processing unit. The memory is used to store preset control programs for normal mode and constellation mode.

[0011] Furthermore, the control program is pre-programmed into the memory.

[0012] Furthermore, the MCU control module also integrates a data input module. One end of the data input module is electrically connected to the communication module, and the other end is electrically connected to the central processing unit. The data input module is used to receive the vehicle system time.

[0013] Furthermore, the central processing unit is used to retrieve the corresponding control program from the memory based on the vehicle system time.

[0014] Furthermore, the operating mode switching module is used to generate a high-level signal or a low-level signal based on the control signal sent by the body controller and send it to the central processing unit.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This application provides a dynamic control system for automotive starry sky dome lights. Compared with the prior art, it has the following advantages:

[0016] (1) This utility model is equipped with a 92662A driver chip. This driver chip has abundant output channels and strong load capacity. A single chip can drive up to 24 LED beads at the same time, and one CAN channel can support up to 16 chips, i.e., control 384 LEDs, thereby ensuring a stable and sufficient lighting effect and solving the problem of high circuit heat caused by the linear scheme in the prior art. In addition, this driver chip also has a high-efficiency energy conversion capability, which can effectively reduce energy consumption.

[0017] (2) This utility model innovatively adopts zone dimming technology, which groups the LED beads according to channels and programs and stores these grouping information into an array. By precisely controlling the input current of different lamp groups, and using PWM waveform modulation technology, a dynamic starry sky effect like twinkling stars is created.

[0018] (3) This utility model integrates the intelligent recognition and display function of the twelve constellation patterns, which can automatically highlight the corresponding constellation pattern according to the current month, greatly enriching the display effect of the starry sky ceiling light. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a dynamic control system for a car starry sky roof light provided in an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of another dynamic control system for automotive starry sky dome lights provided in this embodiment of the utility model.

[0022] Figure 3 This is a schematic diagram of a communication module circuit provided in an embodiment of the present invention.

[0023] Figure 4 This is a partial schematic diagram of an LED driver module circuit provided in an embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of an LED driver module circuit provided in an embodiment of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “upper end,” “lower end,” and “middle” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0027] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0028] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] Example

[0030] The specific implementation method is as follows:

[0031] like Figure 1 The diagram shown is a schematic diagram of a dynamic control system for a car starry sky roof light provided in an embodiment of this utility model.

[0032] As an example, the control system includes: a car battery 2, a body controller 3, and a car starry sky roof light control device 1; the car starry sky roof light control device 1 integrates a power module 100, a communication module 110, an MCU control module 120, an LED driver module 130, and N LED loads 140; the input terminal of the power module 100 is electrically connected to the output terminal of the car battery 2, and the output terminal of the power module 100 is electrically connected to the LED driver module 130 and the MCU control module 120 respectively, for supplying power to the LED driver module 130 and the MCU control module 120; the communication module 1... The communication module 110 is electrically connected to the body controller 3 and the MCU control module 120 respectively. The communication module 110 is used to transmit the control signals sent by the body controller 3 to the MCU control module 120. The MCU control module 120 is electrically connected to the LED driver module 130. The MCU control module 120 is used to send the data for lighting up the LED load 140 to the LED driver module 130 based on the control signals sent by the body controller 3. The LED driver module 130 is electrically connected to the N LED loads 140 respectively and is used to output PWM waves to light up the LED loads 140.

[0033] In some feasible implementations, combined with Figure 4The diagram shown is a partial schematic of the LED driver module 130 circuit. The LED driver module 130 integrates a driver chip, the model of which is TPS92662A. More specifically, in conjunction with... Figure 5 As shown, the LED driver module 130 is a matrix driver module.

[0034] In some feasible implementations, the N LED loads 140 are grouped according to the channels of the LED driver module 130, and the grouped LED loads 140 are electrically connected to the LED driver module 130 respectively. Specifically, this embodiment uses a TPS92662A driver chip in the LED driver module 130. This driver chip has abundant output channels and strong load capacity. A single chip can drive up to 24 LED beads simultaneously, and one CAN channel can support up to 16 chips, i.e., control 384 LEDs, thereby ensuring a stable and sufficient lighting effect and solving the problem of high circuit heat caused by linear schemes in the prior art. In addition, this driver chip also has high energy conversion efficiency, which can effectively reduce energy consumption. Furthermore, by adopting zone dimming technology, the LED beads are grouped according to channels, and this grouping information is programmed and stored in an array. By precisely controlling the input current of different light groups and using PWM waveform modulation technology, a dynamic starry sky effect like twinkling stars is created.

[0035] In some feasible implementations, combined with Figure 3 The diagram shown is a circuit diagram of communication module 110. The communication module integrates a CAN chip.

[0036] In some feasible implementations, combined with Figure 2 As shown, the MCU control module 120 integrates a central processing unit 1201 and a working mode switching module 1202. The input terminal of the working mode switching module 1202 is electrically connected to the output terminal of the communication module 110, and the output terminal of the working mode switching module 1202 is electrically connected to the central processing unit 1201. The working mode switching module 1202 is used to switch the working mode of the car starry sky dome light to normal mode or constellation mode based on the control signal sent by the body controller 3.

[0037] In some feasible implementations, combined with Figure 2 As shown, the MCU control module 120 also integrates a memory 1203, which is electrically connected to the central processing unit 1201. The memory 1203 is used to store preset control programs for normal mode and constellation mode. The control programs are pre-programmed into the memory 1203.

[0038] In some feasible implementations, combined with Figure 2As shown, the MCU control module 120 also integrates a data input module 1204. One end of the data input module 1204 is electrically connected to the communication module 110, and the other end is electrically connected to the central processing unit 1201. The data input module 1204 is used to receive the vehicle system time. The central processing unit 1201 is used to retrieve the corresponding control program from the memory 1203 based on the vehicle system time. The working mode switching module 1202 is used to generate a high-level signal or a low-level signal based on the control signal sent by the body controller 3 and send it to the central processing unit 1201. Specifically, a high-level signal corresponds to the normal mode, and a low-level signal corresponds to the constellation mode, and vice versa. In a specific application scenario, the user opens the car door using a key, and after starting the engine, the power module 100 stably transmits the voltage from the body battery 2 to the MCU control module 120 and the LED driver module 130. When the communication module 110 receives the signal from the common CAN bus of the body controller 3, it immediately forwards these CAN signals to the MCU control module 120. The MCU control module 120 then analyzes these signals to confirm the current operating mode and sends the data for lighting up the LED load 140 to the LED driver module 130. The LED driver module 130 is then responsible for outputting PWM waveforms to each channel to light up the LED load 140.

[0039] In some feasible implementations, constellation modes are preset, offering three brightness levels and three flashing frequencies. The MCU control module 120 reads the vehicle's system time each time it is activated and displays the corresponding constellation pattern based on the current month. Users can select the brightness and flashing frequency of the starry sky via the vehicle's large screen. The overall display brightness can be adjusted by changing the duty cycle of the PWM waveform; the flashing frequency can be controlled by adjusting the dimming up / down time, thus achieving various starry sky effects. This technology not only enhances the vehicle's aesthetics but also provides drivers with a more personalized and enjoyable driving experience. It makes the interior atmosphere more aligned with the user's personal preferences, enhancing driving pleasure. Furthermore, users can easily switch between different starry sky display modes according to their mood and the occasion, making each drive full of novelty and anticipation.

[0040] In the above embodiments, the TPS92662A chip was used, and PWM zone dimming technology was employed to achieve personalized dynamic effects. This technology makes the simulated starry sky effect more realistic and captivating.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dynamic control system for a car star ceiling lamp, characterized in that, The control system comprises an automobile battery, a vehicle body controller and an automobile star ceiling lamp control device; The automobile star ceiling lamp control device is integrated with a power module, a communication module, an MCU control module, an LED driving module and N LED loads; The power module input end is electrically connected with the automobile battery output end, and the power module output end is electrically connected with the LED driving module and the MCU control module respectively, for supplying power to the LED driving module and the MCU control module; The communication module is electrically connected with the vehicle body controller and the MCU control module respectively, and the communication module is used for transmitting the control signal sent by the vehicle body controller to the MCU control module; The MCU control module is electrically connected with the LED driving module, and the MCU control module is used for sending the data of lighting LED load to the LED driving module based on the control signal sent by the vehicle body controller; The LED driving module is electrically connected with the N LED loads respectively, for outputting PWM wave to light the LED load.

2. The dynamic control system for car star ceiling lamp according to claim 1, characterized in that, The LED driving module is integrated with a driving chip, and the model of the driving chip is TPS92662A.

3. The dynamic control system for automobile star ceiling lamp of claim 1, wherein, The N LED loads are grouped according to the channels of the LED driving module, and the grouped LED loads are electrically connected with the LED driving module respectively.

4. The dynamic control system for automobile star ceiling lamp of claim 1, wherein, The communication module is integrated with a CAN chip.

5. The dynamic control system for automobile star ceiling lamp of claim 1, wherein, The MCU control module is integrated with a central processor and a working mode switching module, the working mode switching module input end is electrically connected with the communication module output end, the working mode switching module output end is electrically connected with the central processor, and the working mode switching module is used for switching the working mode of the automobile star ceiling lamp to the conventional mode or the constellation mode based on the control signal sent by the vehicle body controller.

6. The dynamic control system for car star ceiling lamp according to claim 5, characterized in that, The MCU control module is also integrated with a memory, the memory is electrically connected with the central processor, and the memory is used for storing the preset control programs of the conventional mode and the constellation mode.

7. The dynamic control system for car star ceiling lamp according to claim 6, characterized in that, The control program is pre-burned in the memory.

8. The dynamic control system for automobile star ceiling lamp of claim 5, wherein, The MCU control module is also integrated with a data input module, one end of the data input module is electrically connected with the communication module, and the other end is electrically connected with the central processor, and the data input module is used for receiving the vehicle system time.

9. The dynamic control system for car star ceiling lamp according to claim 8, characterized in that, The central processor is used for calling the corresponding control program in the memory based on the vehicle system time.

10. The dynamic control system for automobile star ceiling lamp of claim 5, wherein, The working mode switching module is used for generating a high-level signal or a low-level signal based on the control signal sent by the vehicle body controller and sending the signal to the central processor.

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