Vehicle light control device, interactive lamp and vehicle system

Abstract

The invention provides a vehicle light control device, an interaction lamp and a vehicle system, the vehicle light control device comprises a light driving module, the light driving module comprises M driving chips, and M is a positive integer; each output end of the time division multiplexing module is coupled with the positive electrode of a group of light emitting units, and each group of light emitting units at least comprises N light emitting units; each driving chip is coupled with the negative electrodes of the P groups of light-emitting units; wherein P represents the number of the output ends of the time division multiplexing module; wherein the light driving module and the time division multiplexing module are used for receiving a message of a vehicle controller, and controlling the light emitting state of the light emitting unit based on the message. Through the mode, the time division multiplexing module is combined with the light driving module to carry out time division control on the light emitting units, so that more light emitting units are controlled on the basis that the number of hardware is not changed.

Description

Technical Field

[0001] The present application mainly relates to the field of electronic circuit technology, and in particular to a vehicle light control device, an interactive light and a vehicle system. Background Art

[0002] With the development of intelligent automobile industry, automobile lighting system is no longer just realizing lighting function, but developing more in the direction of intelligence. In this context, interactive lamps have come into being. Interactive lamps can automatically adjust the brightness, color and mode of lights according to user actions, environmental changes or other input signals through integrated sensors and intelligent control systems. This kind of lamp not only provides basic lighting functions, but also enhances the interactivity between users and devices, and improves the user experience. Interactive lamps can control the working status of up to hundreds of LED lamp beads through LED matrix control chips, so that hundreds of LED lamp beads can form various graphics or characters in real time, which can be used to interact with other vehicles or pedestrians, increasing driving safety, personalization and intelligence. With the increase of display demand, there is also an increase in demand for the number of LED lamp beads in interactive lamps. Summary of the invention

[0003] The main purpose of this application is to provide a vehicle light control device, an interactive light and a vehicle system to solve the problem that the control of a large number of lights in a vehicle system requires the use of a large number of hardware devices, resulting in a large occupied area and increased costs, so as to realize the function of controlling a large number of light displays with a smaller number of hardware.

[0004] In order to solve the above problems, the present application provides a vehicle lighting control device, which includes: a lighting driving module, the lighting driving module includes M driving chips, where M is a positive integer; a time-sharing multiplexing module, each output end of the time-sharing multiplexing module is coupled to the positive pole of a group of light-emitting units, and each group of light-emitting units includes at least N light-emitting units; each driving chip is coupled to the negative pole of P groups of light-emitting units; where P represents the number of output ends of the time-sharing multiplexing module; wherein the lighting driving module and the time-sharing multiplexing module are used to receive messages from the vehicle controller and control the light-emitting state of the light-emitting unit based on the message. In the above manner, the light-emitting unit is controlled in time by combining the time-sharing multiplexing module with the lighting driving module, so that more light-emitting units can be controlled on the basis of the unchanged number of hardware.

[0005] In one embodiment, the vehicle lighting control device also includes: a graphic processing module, which is coupled to the lighting driving module and the time-sharing multiplexing module, and is used to receive messages from the vehicle controller and send control signals to the lighting driving module and the time-sharing multiplexing module based on the messages.

[0006] In one embodiment, the light driving module includes 15 driving chips; each group of light emitting units includes at least 48 light emitting units; and each driving chip is coupled to the cathodes of four groups of light emitting units.

[0007] In one embodiment, the M driver chips are connected in series.

[0008] In one embodiment, the vehicle light control device further includes: a protection module, an input end of the protection module is configured as an input power source, and an output end of the protection module is coupled to the light driving module and the time-division multiplexing module.

[0009] In one embodiment, the protection module includes: a filtering unit, wherein the input end of the filtering unit is configured as an input power supply; a surge protection unit, wherein the input end of the surge protection unit is coupled to the output end of the filtering unit; a rectifying unit, wherein the input end of the rectifying unit is coupled to the output end of the surge protection unit, and the output end of the rectifying unit is coupled to the lighting driving module and the time-division multiplexing module.

[0010] In one embodiment, the vehicle lighting control device further includes: a buck module, an input end of the buck module is coupled to the protection module, a first output end of the buck module is coupled to the lighting driving module, and a second output end of the buck module is coupled to the time-division multiplexing module.

[0011] In one embodiment, the light driving module and the time-division multiplexing module use the same path for communication.

[0012] To solve the above problems, the present application also provides an interactive light, which includes: a power supply; a vehicle light control device, the vehicle light control device is coupled to the power supply, and the vehicle light control device is a vehicle light control device as described in any one of the above embodiments; a light-emitting module, the light-emitting module is coupled to the vehicle light control device, the light-emitting module includes X light-emitting units, and each light-emitting unit is coupled to the vehicle light control device.

[0013] In order to solve the above problems, the present application also provides a vehicle system, which includes an interactive light, and the interactive light is the interactive light described in any one of the above embodiments.

[0014] The present application provides a vehicle light control device, an interactive light and a vehicle system, which utilizes a time-sharing multiplexing module in combination with a light driving module to realize time-sharing control of multiple groups of light-emitting units, so that more groups of light-emitting units can be controlled on the basis of the original number of driving chips, thereby saving the space occupied by the equipment, improving the integration, saving the hardware usage cost, and better improving the display effect of the vehicle lights. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0016] Figure 1 is a structural schematic diagram of a first embodiment of a vehicle lighting control device provided by the present application;

[0017] Figure 2 is a structural schematic diagram of a second embodiment of a vehicle lighting control device provided by the present application;

[0018] Figure 3 is a structural schematic diagram of an embodiment of a light-emitting unit provided in the present application;

[0019] Figure 4 is a structural schematic diagram of a third embodiment of a vehicle lighting control device provided by the present application;

[0020] Figure 5 It is a structural schematic diagram of the first embodiment of the protection module provided by the present application;

[0021] Figure 6 is a structural schematic diagram of a fourth embodiment of a vehicle lighting control device provided by the present application;

[0022] Figure 7 is a structural schematic diagram of an embodiment of an interactive light provided by the present application;

[0023] Figure 8 It is a structural schematic diagram of an embodiment of a vehicle system provided by the present application.

[0024] Figure Number:

[0025] 100. Vehicle lighting control device; 10. Light driving module; 20. Time-division multiplexing module; 30. Light-emitting unit; 40. Graphics processing module; 50. Protection module; 51. Filter unit; 52. Surge protection unit; 53. Rectification unit; 60. Step-down module; 200. Interactive light; 210. Power supply; 300. Vehicle system. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0027] The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] An interactive light is a lamp that can interact with the user or the environment. It not only provides lighting functions, but also can automatically adjust the brightness, color and mode of the light according to the user's actions, environmental changes or other input signals through various sensors and intelligent control systems. In an interactive light, a single LED requires an LED drive channel for control. Generally, the number of LED particles is less than 1,000. If you want to achieve a better interactive light effect, you need to increase the number of LEDs, such as about 3,000 LEDs. At the same time, the number of chips used is also huge. A similar chip can control 24 to 48 LEDs. If only a single channel is used to control a single LED, then the number of chips required for 3,000 LEDs will be close to 100, which will undoubtedly increase the cost of using chips and increase the PCB area for arranging chips. Too many chips will also lead to problems such as insufficient address bits and too long communication lines, which have forced many car manufacturers or lighting manufacturers to give up better interactive light effects and reduce the number of LED particles to less than 1,000. Therefore, the present application provides a vehicle lighting control device, an interactive light and a vehicle system to solve the above problems.

[0030] See also Figure 1 As shown, Figure 1 1 is a schematic diagram of the structure of the first embodiment of the vehicle light control device 100 provided by the present application; the vehicle light control device 100 provided by the present application comprises: a light driving module 10, the light driving module 10 comprises M driving chips (not shown), wherein M is a positive integer; a time-division multiplexing module 20, each output end of the time-division multiplexing module 20 is coupled to the positive electrode of a group of light-emitting units 30, each group of light-emitting units 30 comprises at least N light-emitting units 30; each driving chip is coupled to the negative electrode of P groups of light-emitting units 30; wherein P represents the number of output ends of the time-division multiplexing module 20; wherein the light driving module 10 and the time-division multiplexing module 20 are used to receive the message of the vehicle controller, and control the light-emitting state of the light-emitting unit 30 based on the message. In the above manner, the light-emitting unit 30 is controlled in time by combining the time-division multiplexing module 20 with the light driving module 10, so that more light-emitting units 30 can be controlled on the basis of the unchanged number of hardware.

[0031] in Figure 1 Only one light emitting unit 30 is used as an example. In a specific solution, all light emitting units 30 are connected to the vehicle light control device 100 in the same way.

[0032] In one embodiment, if Figure 2 As shown, Figure 2 It is a structural schematic diagram of the second embodiment of the vehicle lighting control device provided by the present application; the vehicle lighting control device 100 also includes: a graphic processing module 40, the graphic processing module 40 is coupled to the lighting driving module 10 and the time-division multiplexing module 20, and the graphic processing module 40 is used to receive the message from the vehicle controller and send a control signal to the lighting driving module 10 and the time-division multiplexing module 20 based on the message.

[0033] A separate image and text processing module 40 is provided in the vehicle light control device 100, and the image and text processing module 40 communicates with the vehicle body controller through external signal input, stores or receives text, pictures, video signal files or other required files sent by other terminals, and converts the signal into the data and control signal format required by the matrix of the light-emitting unit 30 for controlling the display state of the matrix of the light-emitting unit 30. At the same time, the image and text processing module 40 transmits the received and / or stored message information to the time-division multiplexing module 20 and the light driving module 10, and the time-division multiplexing module 20 and the light driving module 10 control the light-emitting unit 30 therein through the received information to realize the display of text or pictures.

[0034] Furthermore, the driver chips can perform fault monitoring on the light-emitting unit 30 controlled by it, detect faults such as short circuit and open circuit of the light-emitting unit 30, and send remote messages to the body controller through the graphic processing module 40 to realize the diagnostic function.

[0035] In one embodiment, the light driving module 10 includes 15 driving chips; each group of light emitting units 30 includes at least 48 light emitting units 30 ; and each driving chip is coupled to the cathodes of four groups of light emitting units 30 .

[0036] It can be understood that in one embodiment, the driver chip includes 48 control pins of the light-emitting unit 30. After receiving the message from the vehicle controller, the driver chip processes the received message through the SPI communication mode, and controls the light-emitting state of each connected light-emitting unit 30 through the internal control logic, wherein the light-emitting state includes whether the light of the light-emitting unit 30 is on or off, and the light brightness of the light-emitting unit 30, so as to achieve the display effect of different texts and different pictures and dynamic modeling. The light-emitting unit 30 can be an LED lamp bead. The SPI (Serial Peripheral Interface) is a synchronous serial communication protocol for data transmission between a microcontroller (MCU) and a peripheral device. SPI communication is full-duplex, which means that it can send and receive data at the same time. The SPI communication protocol is a high-speed, full-duplex, synchronous communication bus, which is widely used in short-distance communication between embedded systems and peripheral devices. It only needs to use 4 wires at most (3 wires in some cases) to realize data transmission between devices. SPI communication adopts a master-slave mode, usually consisting of a master device and one or more slave devices. The master device is responsible for controlling the communication process, including the generation of clock signals, the selection of slave devices, and the sending and receiving of data. The slave device responds to the control signal of the master device to complete the reception or transmission of data.

[0037] In one embodiment, M driver chips are connected in series. It is understandable that multiple driver chips can be connected in series in a daisy chain manner through communication pins, for example, 15 driver chips are connected in series. Daisy chain connection refers to connecting multiple devices or components in a linear order to form a chain structure. Each device is connected to the adjacent devices in front and behind through a single link, and data needs to pass through all devices when transmitted from one endpoint to another. This connection method is similar to the continuous arrangement of chrysanthemum petals, hence the name "daisy chain".

[0038] Among them, in the above embodiments, Figure 3 As shown, Figure 3It is a structural schematic diagram of an embodiment of a light-emitting unit provided in the present application; the light-emitting unit 30 therein adopts a light-emitting diode, specifically, the positive electrode of the light-emitting diode is coupled to any output terminal of the time-sharing multiplexing module 20, the positive electrode of the light-emitting diode is coupled to any pin of the 48 pins of the driving chip, and each driving chip is coupled to the negative electrodes of four groups of light-emitting units 30, that is, there are four output terminals in the time-sharing multiplexing module 20, and each output terminal of the time-sharing multiplexing module 20 is correspondingly coupled to the positive electrode of any one group of light-emitting units 30. For example, by connecting 15 driver chips in series and coupling each driver chip to the negative pole of four groups of light-emitting units 30, one group of light-emitting units 30 includes 48 light-emitting units 30, and any driver chip includes 48 driving pins, that is, one pin corresponding to the driver chip needs to be coupled to four light-emitting units 30, and then combined with two time-sharing multiplexing modules 20, the output end of the time-sharing multiplexing module 20 is turned on in sequence according to a certain frequency, that is, a maximum of 5760 light-emitting units 30 can be controlled, and the control of the light-emitting units 30 is increased exponentially without adding other hardware.

[0039] Specifically, the driver chip includes 48 control pins of the light-emitting units 30, each of which is coupled to the negative electrodes of the four light-emitting units 30. Thus, the four output terminals of the time-division multiplexing module 20 are turned on in sequence at a certain frequency, thereby realizing the time-division multiplexing function. The time-division multiplexing module 20 outputs four high-side SWs. For example, by evenly dividing 2,000 LEDs under the four high-side SWs, the number of low-side SWs can be reduced to 1 / 4 of the original number, that is, the number of LED control chips is changed to 1 / 4 of the original number, which greatly reduces the hardware cost. At the same time, the four high-side SWs are turned on in sequence, that is, each is turned on for 1 / 4 of the time in one cycle, and the frequency is 50HZ, ensuring that the naked eye cannot see that the LED is off, so as to reflect the cost advantage of time-division multiplexing.

[0040] In the above embodiment, by using the light driving module 10 and the time-sharing multiplexing module 20, the number of the originally controllable light-emitting units 30 is increased to 4-8 times the number of the originally controllable light-emitting units 30 by scanning, thereby achieving the driving of more light-emitting units 30 with the same number of hardware chips. Each LED is scanned in time by controlling the high and low levels of the row and column lines to achieve the display of images or texts. In the specific operation, the image or text to be displayed is first processed, each point is corresponded to the position of the corresponding LED, and the on and off state of the LED is determined. Then, according to a certain scanning order, the levels of the row and column lines are controlled row by row or column by column, so that each LED completes the conversion of the on and off state within a specific time period. Due to the visual persistence effect, it is difficult for the human eye to perceive the changes in the scanning process, thereby forming a continuous image or text. The scanning process controls the on and off state of the LED lights row by row or column by column, and uses the visual persistence effect to achieve continuous image or text display.

[0041] It is understandable that in other embodiments, the same modules and their connection relationships can be used, and the number of module settings can be increased or decreased to increase or decrease the number of light-emitting units 30 to be controlled. For example, four time-division multiplexing modules 20 are used in combination with a light driving module 10, and the light driving module 10 includes 30 driving chips to control more light-emitting units 30 to increase the display effect.

[0042] In one embodiment, if Figure 4 As shown, Figure 4 It is a structural schematic diagram of the third embodiment of the vehicle lighting control device provided in the present application; the vehicle lighting control device 100 also includes: a protection module 50, the input end of the protection module 50 is configured as an input power supply, and the output end of the protection module 50 is coupled to the lighting driving module 10 and the time-division multiplexing module 20.

[0043] In one embodiment, if Figure 5 As shown, Figure 5 It is a structural schematic diagram of the first embodiment of the protection module provided by the present application; the protection module 50 includes: a filtering unit 51, the input end of the filtering unit 51 is configured as an input power supply; a surge protection unit 52, the input end of the surge protection unit 52 is coupled to the output end of the filtering unit 51; a rectifying unit 53, the input end of the rectifying unit 53 is coupled to the output end of the surge protection unit 52, and the output end of the rectifying unit 53 is coupled to the lighting driving module 10 and the time-division multiplexing module 20.

[0044] The protection module 50 in the above embodiment processes the power connected to the vehicle lighting control device to protect the circuit from transient high voltage damage and remove unnecessary frequency components in the signal. The protection module 50 plays a vital role in the circuit. Through a variety of protection mechanisms, it ensures that the device can operate safely and stably under various abnormal conditions. These protection functions not only extend the service life of the device, but also improve the reliability and safety of the system.

[0045] Among them, in one embodiment, the surge protection unit 52 includes: a TVS diode, which is used to reduce the risk of component breakdown caused by short-term high voltage; the surge refers to the instantaneous peak value of voltage and current caused by lightning strikes, switch operations, short circuit faults, etc. in the power system. Surge protection devices (such as surge protectors, TVS diodes, etc.) can quickly respond to these transient peaks and clamp excessive voltage and current within a safe range, thereby protecting sensitive components in the circuit. And TVS (Transient Voltage Suppressor) is a transient voltage suppression diode, which is an efficient circuit protection device, mainly used to protect the circuit from damage by transient high voltage. The rectifier unit 53 includes: a rectifier diode, which is used to protect the circuit from reverse conduction when the power supply is reversely connected; in other embodiments, a series diode or a fuse combined with a voltage regulator diode can also be used to prevent the circuit from reverse conduction. The filter unit 51 includes: a capacitor, a common mode inductor and a magnetic bead, which are used to reduce the ripple and noise brought by the input end and increase the stability of the system. The filter unit 51 removes unnecessary frequency components from the input signal and retains the required frequency components.

[0046] In other embodiments, a filtering unit 51 may be added at the rear end of the rectifying unit 53 to further perform filtering operation after the current and voltage pass through the rectifying unit 53 to remove ripples and provide a smooth DC output.

[0047] In one embodiment, if Figure 6 As shown, Figure 6 It is a structural schematic diagram of the fourth embodiment of the vehicle lighting control device provided in the present application; the vehicle lighting control device 100 also includes: a step-down module 60, an input end of the step-down module 60 is coupled to the protection module 50, a first output end of the step-down module 60 is coupled to the lighting driving module 10, and a second output end of the step-down module 60 is coupled to the time-division multiplexing module 20.

[0048] In one embodiment, the step-down module 60 is a DC-DC step-down module, which outputs the fluctuating vehicle power supply into a stable constant voltage source with a lower voltage, which is used to power all other modules, wherein the working principle of the DC-DC step-down is mainly based on the interaction between energy storage elements (such as inductors and capacitors) and switching elements (such as MOSFETs). Through the frequent switching of the switch, the input DC voltage is converted into the required output voltage. The advantage of this is that the heat generation power of the light driving module 10 can be greatly reduced, so as to drive more LED lamp beads (light-emitting units 30) under the condition of lower heat generation power, increase the number of light-emitting units 30 that can be controlled by the interactive lamp, and obtain a better user experience.

[0049] In one embodiment, the light driving module 10 and the time-sharing multiplexing module 20 use the same path for communication. It can be understood that the light driving module 10 and the time-sharing multiplexing module 20 use the same path for communication (i.e., use a single communication link for data transmission) has multiple advantages, which make it an efficient communication method in many application scenarios. Among them, the light driving module 10 and the time-sharing multiplexing module 20 use the same path for communication to avoid coordination errors between the light driving module 10 and the time-sharing multiplexing module 20, reduce the development cost of software control, and reduce the probability of abnormal light on or off of the light emitting unit 30. The specific method of using the same path for communication also has the advantages of simplifying wiring, reducing costs, improving reliability, improving signal integrity, improving system flexibility, improving data transmission efficiency, and facilitating centralized management. In one embodiment, the driver chip can use SPI communication to process received messages and other information.

[0050] To solve the above problems, the present application also provides an interactive light 200, such as Figure 7 As shown, Figure 7 1 is a schematic diagram of the structure of an embodiment of an interactive light provided by the present application; the interactive light 200 includes: a power supply 210, a vehicle light control device 100 and a light-emitting module 220; wherein, the vehicle light control device 100 is coupled to the power supply 210, the light-emitting module 220 is coupled to the vehicle light control device 100, the light-emitting module includes X light-emitting units 30, each light-emitting unit 30 is coupled to the vehicle light control device 100 therein, and the vehicle light control device 100 is the vehicle light control device 100 described in any one of the above embodiments.

[0051] In the above manner, the structure of the vehicle lighting control device 100 is adopted in the interactive light 200, which improves the integration of the interactive light 200 to a certain extent, reduces the use cost of its structure, and can increase the control number of the light-emitting unit 30 on the original basis, thereby improving the display accuracy and display effect of the picture.

[0052] To solve the above problems, the present application also provides a vehicle system 300, such as Figure 8 As shown, Figure 8 It is a structural diagram of an embodiment of a vehicle system provided by the present application; the vehicle system 300 includes an interactive light 200, and the interactive light 200 is the interactive light 200 described in any one of the above embodiments.

[0053] The vehicle light control device 100 provided by the present application includes: a light driving module 10, the light driving module 10 includes M driving chips, wherein M is a positive integer; a time-division multiplexing module 20, each output end of the time-division multiplexing module 20 is coupled to the positive electrode of a group of light-emitting units 30, and each group of light-emitting units 30 includes at least N light-emitting units 30; each driving chip is coupled to the negative electrode of P groups of light-emitting units 30; wherein P represents the number of output ends of the time-division multiplexing module 20; wherein the light driving module 10 and the time-division multiplexing module 20 are used to receive messages from the vehicle controller and control the light-emitting state of the light-emitting unit 30 based on the messages. In the above manner, the light-emitting unit 30 is controlled in time by combining the time-division multiplexing module 20 with the light driving module 10, so that more light-emitting units 30 can be controlled without changing the number of hardware. Through the above method, the time-sharing multiplexing module 20 is combined with the light driving module 10 to realize time-sharing control of multiple groups of light-emitting units 30, so that more groups of light-emitting units 30 can be controlled on the basis of the original number of driving chips, so as to save the space occupied by the equipment, improve the integration, save the hardware usage cost, and better improve the display effect of the vehicle lights.

[0054] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vehicle lighting control device, characterized in that: The vehicle light control device comprises: A light driving module, wherein the light driving module comprises M driving chips, wherein M is a positive integer; A time-division multiplexing module, each output end of which is coupled to the positive electrode of a group of light-emitting units, and each group of light-emitting units includes at least N light-emitting units; Each driving chip is coupled to the cathode of P groups of light-emitting units; wherein P represents the number of output terminals of the time-division multiplexing module; The light driving module and the time-division multiplexing module are used to receive messages from the vehicle controller and control the light-emitting state of the light-emitting unit based on the messages.

2. The vehicle lighting control device according to claim 1, characterized in that: The vehicle light control device also includes: The image and text processing module is coupled to the light driving module and the time-division multiplexing module, and is used to receive messages from the vehicle controller and send control signals to the light driving module and the time-division multiplexing module based on the messages.

3. The vehicle lighting control device according to claim 1, characterized in that: The light driving module includes 15 driving chips; each group of light emitting units includes at least 48 light emitting units; each driving chip is coupled to the cathodes of four groups of light emitting units.

4. The vehicle lighting control device according to claim 1, characterized in that: The M driver chips are connected in series.

5. The vehicle lighting control device according to claim 1, characterized in that: The vehicle light control device also includes: A protection module, wherein the input end of the protection module is configured as an input power source, and the output end of the protection module is coupled to the light driving module and the time-division multiplexing module.

6. The vehicle lighting control device according to claim 5, characterized in that: The protection module comprises: A filter unit, wherein an input end of the filter unit is configured as an input power source; A surge protection unit, wherein an input end of the surge protection unit is coupled to an output end of the filter unit; A rectifier unit, wherein an input end of the rectifier unit is coupled to an output end of the surge protection unit, and an output end of the rectifier unit is coupled to the light driving module and the time-division multiplexing module.

7. The vehicle lighting control device according to claim 5, characterized in that: The vehicle light control device also includes: A step-down module, wherein an input end of the step-down module is coupled to the protection module, a first output end of the step-down module is coupled to the light driving module, and a second output end of the step-down module is coupled to the time-division multiplexing module.

8. The vehicle lighting control device according to any one of claims 1 to 7, characterized in that: The lighting driving module and the time-division multiplexing module use the same path for communication.

9. An interactive light, characterized in that: The interactive light comprises: power supply; A vehicle light control device, the vehicle light control device is coupled to the power supply, and the vehicle light control device is the vehicle light control device according to any one of claims 1 to 8; A light emitting module, the light emitting module is coupled to the vehicle light control device, the light emitting module comprises X light emitting units, each of the light emitting units is coupled to the vehicle light control device.

10. A vehicle system, characterized in that: The vehicle system includes an interactive light, the interactive light being the interactive light of claim 9.

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