Sensing fusion headlamp control system

Abstract

The utility model discloses a perception fusion headlamp control system which comprises an SOC controller, a driving board, a light source board and a camera, and the camera is connected with the SOC controller. The driving board comprises an MCU module, an SPI data selection module and a BODY CAN transceiver, the SOC controller and the MCU module are in UART communication, the SOC controller and the SPI data selection module are in SPI communication, the MCU module and the SPI data selection module are in SPI communication, and the MCU module and the vehicle machine are in CAN communication through the BODY CAN transceiver; the light source plate comprises an ASIC driving module and an LED pixel lamp, the MCU module and the ASIC driving module carry out UART communication, the SPI data selection module is connected with the ASIC driving module, and the ASIC driving module is connected with the LED pixel lamp. The utility model provides a perception fusion headlight control system, which realizes a high-resolution seamless projection effect, realizes high-precision and intelligent control of headlights, and meets diversified requirements of drivers and passengers.

Description

Technical Field

[0001] The utility model relates to a perception fusion headlamp control system, belonging to the technical field of vehicle lamp control. Background Art

[0002] At present, in the current automotive lighting system, the headlamp control system has evolved from traditional mechanical adjustment to electronic adjustment and is gradually developing towards intelligence. Among them, the Adaptive Driving Beam (ADB) system is a system that can automatically adjust the beam direction, brightness, and distribution according to driving conditions, which significantly improves driving safety at night or in bad weather conditions. However, with the rapid development of high-definition projection technology and perception fusion technology, a perception fusion headlamp control system combining these advanced technologies has emerged, aiming to further improve driving safety and lighting efficiency.

[0003] In the prior art, the perception fusion headlamp control system usually integrates sensors such as high-definition cameras, radars, or lidars. By real-time perceiving the vehicle surrounding environment and combining vehicle status information, intelligent control of the headlamps is achieved. Specifically, the system can perceive the road conditions ahead, traffic signs, pedestrians, and other vehicles, etc., and accordingly adjust the irradiation range, brightness, and angle of the headlamps to ensure the best lighting effect for the driver at night or in bad weather conditions.

[0004] Although the existing ADB system can automatically adjust the headlamps according to the driving environment, its pixel resolution is often not high, resulting in a not-so-fine light distribution projected by the headlamps. Especially in scenarios that require high-precision adjustment, such as urban driving and highway driving at night, the performance of the ADB system may not meet the requirements. Moreover, most of the current HD projection headlamps adopt single modules, and their resolutions have certain limitations. The lower resolution not only affects the clarity of the image but also limits the amount of information and complexity that the system can display. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a perception fusion headlamp control system to achieve a high-resolution seamless projection effect, realize high-precision and intelligent control of the headlamps, and meet the diverse needs of drivers and passengers.

[0006] To solve the above technical problem, the technical solution of the utility model is:

[0007] A perception fusion headlamp control system, which includes an SOC controller, a driver board, a light source board, and a camera, and the camera is connected to the SOC controller;

[0008] The driving board includes an MCU module, an SPI data selection module, and a BODY CAN transceiver. The SOC controller communicates with the MCU module via UART, the SOC controller communicates with the SPI data selection module via SPI, the MCU module communicates with the SPI data selection module via SPI, and the MCU module communicates with the vehicle head unit via CAN through the BODY CAN transceiver;

[0009] The light source board includes an ASIC driving module and LED pixel lights. The MCU module communicates with the ASIC driving module via UART, the SPI data selection module is connected to the ASIC driving module, and the ASIC driving module is connected to the LED pixel lights.

[0010] Furthermore, the driving board further includes an anti-reverse filtering module, a first LDO module, a first DCDC module, and an LED power module;

[0011] The input end of the anti-reverse filtering module is connected to the vehicle body battery, and the output end of the anti-reverse filtering module supplies power to the first LDO module, the first DCDC module, and the LED power module respectively;

[0012] The first LDO module supplies power to the MCU module, the SPI data selection module, and the BODY CAN transceiver;

[0013] The LED power module is connected to the MCU module, and the LED power module supplies power to the LED pixel lights.

[0014] Furthermore, the SOC controller includes an SOC module and a second DCDC module. The camera is connected to the SOC module. The SOC module communicates with the MCU module via UART, the SOC module communicates with the SPI data selection module via SPI. The second DCDC module is powered by the anti-reverse filtering module, and the second DCDC module supplies power to the SOC module.

[0015] Furthermore, the SOC controller further includes a DDR memory and an eMMC memory, and both the DDR memory and the eMMC memory are connected to the SOC module.

[0016] Furthermore, the light source board further includes a second LDO module. The second LDO module is powered by the first DCDC module, and the second LDO module supplies power to the ASIC driving module.

[0017] Adopting the above technical solutions, the present utility model has the following beneficial effects:

[0018] 1. The utility model uses the architecture of SOC and multiple MCUs. By optimizing the system performance and processing power, it can quickly process and analyze a large amount of image data obtained by a high-definition camera. The SOC controller judges the current driving environment and calculates the best projection effect and parameters of the headlight, achieving a high-resolution and seamless projection effect. This not only makes the light distribution projected by the headlight more delicate, but also can display more details and complex images, enhancing the driving experience.

[0019] 2. The utility model incorporates the application of an SPI data selection chip. By introducing the SPI data selection chip, the system can flexibly select the image data source from the SOC controller or the MCU module for projection, rather than simply performing data passthrough. This not only saves the processing resources of the MCU, improves the processing efficiency of the MCU, but also enhances the flexibility and configurability of the system.

[0020] 3. The utility model combines the MCU controller and the light source board lamp structure into an actuator. This design greatly improves the scalability of the entire system. By increasing or decreasing the actuator, the system can easily adapt to different vehicle models and lighting requirements, reducing the complexity of system development and maintenance.

[0021] 4. The utility model dynamically adjusts the power supply voltage of the light source board through SPI, which not only saves energy consumption but also reduces the heat dissipation requirements of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic block diagram of a perception fusion headlight control system of the utility model;

[0023] Figure 2 is a schematic circuit diagram of a perception fusion headlight control system of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the content of the utility model easier to be clearly understood, the following further details the utility model according to specific embodiments and in conjunction with the drawings.

[0025] As Figure 1 shown, this embodiment provides a perception fusion headlight control system, which includes an SOC controller, a driver board, a light source board, and a camera. This embodiment is provided with a left front headlight and a right front headlight. The camera is installed in one of the headlights and is connected to the SOC controller, and the SOC controller receives the image data of the front of the vehicle captured by the camera. A driver board and a light source board are installed in each front headlight, and one SOC controller controls the driver boards in the two headlights at the same time, and then the driver board controls the light source board.

[0026] As Figure 2As shown in the figure, the SOC controller of this embodiment includes an SOC module, a DDR memory, an eMMC memory, and a second DCDC module. The SOC module uses the 560 Lite of Ouyeel Longquan. The camera is connected to the SOC module. Both the DDR memory and the eMMC memory are connected to the SOC module. The second DCDC module powers the SOC module. The SOC controller also includes an Ethernet interface for Bootload to use.

[0027] As Figure 2 shown in the figure, the drive board of this embodiment includes an MCU module, an SPI data selection module, and a BODY CAN transceiver. The MCU module of this embodiment uses an MCU chip with the model number S32k144, and the model of the BODY CAN transceiver is TCAN1044V. The SOC module communicates with the MCU module through UART. The SOC module communicates with the SPI data selection module through SPI. The MCU module communicates with the SPI data selection module through SPI. The MCU module communicates with the vehicle head unit through the BODY CAN transceiver for CAN communication.

[0028] As Figure 2 shown in the figure, the light source board of this embodiment includes an ASIC drive module and LED pixel lights. The ASIC drive module uses Osram eviyos 2. The MCU module communicates with the ASIC drive module through UART. The SPI data selection module is connected to the ASIC drive module, and the ASIC drive module is connected to the LED pixel lights.

[0029] This embodiment uses the system architecture of the above one SOC controller and two MCU modules for overall control. The SOC controller, as the system core, is responsible for receiving the image data of the camera and realizing the functions of environmental perception and image processing. The camera captures the image of the vehicle front environment in real time and transmits the image data to the SOC controller. At the same time, the MCU module sends the necessary vehicle body data to the SOC controller through UART.

[0030] The SOC controller receives the data from the camera and the MCU module, and performs real-time processing and analysis. According to the data analysis results, the SOC controller judges the current driving environment and calculates the best projection effect and parameters of the headlights.

[0031] According to the data processing and analysis results, the SOC controller generates corresponding control instructions and sends them to the MCU module through UART.

[0032] After receiving the control instructions from the SOC controller, the MCU module controls the working states of the light source board and its related structural components according to the instructions to achieve the best projection effect of the headlights.

[0033] In addition, the system introduces an SPI data selection module, which enables the system to flexibly select data sources from the SOC controller or the MCU module for projection, rather than simply passing the data through. The SPI data selection module in this embodiment uses the SN3257 chip from Texas Instruments. The MCU module controls the SPI data selection module to select the image data source sent by the SOC controller through SPI communication or the image data source sent by the MCU module through SPI communication. By doing so, on the one hand, the security can be improved. When working normally, the SOC controller provides the image data source; when the SOC controller fails, the MCU module can continue to provide the basic image to enable the headlight to perform normal lighting. On the other hand, because when working normally, the image data source is directly transmitted to the ASIC driver module through the SPI data selection module chip, rather than being forwarded once through the MCU module, the delay is relatively low. This design not only saves the processing resources of the MCU module, improves the processing efficiency of the MCU module, but also enhances the flexibility and configurability of the system.

[0034] For example: when the camera detects that the driver or passenger approaches or leaves the vehicle, the headlight system can automatically project welcome or farewell animations or texts to enhance the user experience. When the camera detects a pedestrian crossing the road, the headlight can project guiding signs to enhance the reminder and protection of pedestrians.

[0035] As Figure 2 shown, the driver board in this embodiment further includes a motor drive module. The MCU module adjusts the light source irradiation angle by dimming the motor through the motor drive module.

[0036] As Figure 2 shown, the driver board in this embodiment further includes an anti-reverse filtering module, a first LDO module, a first DCDC module, and an LED power module.

[0037] The input end of the anti-reverse filtering module is connected to the vehicle body battery. The anti-reverse filtering module performs anti-reverse protection and filtering processing on the 12V power supply provided by the vehicle body battery, and outputs 12V voltage to supply power to the first LDO module, the first DCDC module, the second DCDC module, and the LED power module respectively.

[0038] The first LDO module uses the TPS7A6633 chip. The first LDO module converts the 12V voltage into 3.3V voltage to supply power to the MCU module, the SPI data selection module, and the BODY CAN transceiver respectively.

[0039] The LED power module is connected to the MCU module. The LED power module uses the TLD5501 chip and supplies power to the LED pixel lights. The MCU module calculates the voltage required for the LED pixel lights according to the control instructions and the image information from the SOC, and controls the LED power module through the SPI interface to adjust the voltage required by the light source in real time.

[0040] The second DCDC module uses the SA24403 chip to convert the 12V voltage into 3.3V voltage for the use of the SOC module.

[0041] As Figure 2 shown, the light source board of this embodiment further includes a second LDO module. The second LDO module is powered by the first DCDC module. The first DCDC module uses the TLV76650 chip to convert the 12V voltage into 5V voltage for the use of the second LDO module. The second LDO module uses the TLV70233 chip and the TPS62661 chip to output 5V, 3.3V, and 1.8V voltages to power the ASIC driver module.

[0042] The specific embodiments described above further elaborate on the technical problems solved, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A perception fusion headlight control system, characterized in that: It includes an SOC controller, a driving board, a light source board and a camera, and the camera is connected to the SOC controller; The driving board includes an MCU module, an SPI data selection module and a BODY CAN transceiver. The SOC controller conducts UART communication with the MCU module, the SOC controller conducts SPI communication with the SPI data selection module, the MCU module conducts SPI communication with the SPI data selection module, and the MCU module conducts CAN communication with the vehicle head unit through the BODY CAN transceiver; The light source board includes an ASIC driving module and LED pixel lights. The MCU module conducts UART communication with the ASIC driving module, the SPI data selection module is connected to the ASIC driving module, and the ASIC driving module is connected to the LED pixel lights.

2. The perception fusion headlight control system according to claim 1, characterized in that: The driving board further includes an anti-reverse filtering module, a first LDO module, a first DCDC module and an LED power module; The input end of the anti-reverse filtering module is connected to the vehicle body battery, and the output end of the anti-reverse filtering module supplies power to the first LDO module, the first DCDC module and the LED power module respectively; The first LDO module supplies power to the MCU module, the SPI data selection module and the BODY CAN transceiver; The LED power module is connected to the MCU module, and the LED power module supplies power to the LED pixel lights.

3. The perception fusion headlight control system according to claim 2, characterized in that: The SOC controller includes an SOC module and a second DCDC module. The camera is connected to the SOC module. The SOC module conducts UART communication with the MCU module, the SOC module conducts SPI communication with the SPI data selection module. The second DCDC module is powered by the anti-reverse filtering module, and the second DCDC module supplies power to the SOC module.

4. The perception fusion headlight control system according to claim 3, wherein: The SOC controller further includes a DDR memory and an eMMC memory, and both the DDR memory and the eMMC memory are connected to the SOC module.

5. The perception fusion headlight control system according to claim 3, characterized in that: The light source board further includes a second LDO module. The second LDO module is powered by the first DCDC module, and the second LDO module supplies power to the ASIC driving module.

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