Tree-shaped architecture system for controlling split type headlights

Abstract

The utility model discloses a tree-shaped framework system for controlling split type headlights. The tree-shaped framework system comprises a vehicle body controller, a lamp control module, an upper combined lamp and a lower combined lamp, the upper combined lamp comprises an upper combined lamp driving module and an upper combined lamp load module, and the lower combined lamp comprises a lower combined lamp communication module, a lower combined lamp driving module and a lower combined lamp load module; the vehicle body controller is connected with the lamp control module; the lamp control module is connected with the lower combination lamp driving module through the lower combination lamp communication module, and the lower combination lamp driving module is connected with the lower combination lamp load module. According to the tree-shaped framework system for controlling the split type headlamps, the manufacturing cost of the control system is effectively reduced, certain integrity and consistency are still kept on the control system level, and the influence of multiple lamp bodies on system response on the structure is avoided.

Description

Technical Field

[0001] The utility model relates to a tree - type architecture system for controlling a split - type headlamp, belonging to the technical field of vehicle lamp control. Background Art

[0002] At present, the shape of passenger cars is increasing and the lighting effects of lamps are becoming more and more magnificent, which makes the extended area of lamps on the vehicle body larger. In terms of structure, the lamps on one side are no longer composed of a single lamp body. Taking the headlamp as an example, the headlamp on one side (for example, the left side) is jointly composed of an upper combined lamp, a lower combined lamp and a left through - lamp. For such a distributed headlamp composed of multiple lamp bodies, the common control scheme is that each lamp body interacts with the vehicle body respectively, and the vehicle body controls them independently.

[0003] Taking the upper combined lamp and the lower combined lamp as examples to elaborate on the control scheme: The upper combined lamp is realized by an electronic system composed of a set of power management, communication interaction, logic control and lighting drive. Similarly, the lower combined lamp is also realized by an electronic system composed of a set of power management, communication interaction, logic control and lighting drive. The two jointly form and participate in the work of the headlamp in terms of structure, and are independent of each other in terms of electronic control, and are each controlled by the vehicle body to achieve the headlamp function. Or, the power management and logic control of the headlamp are all realized by the vehicle body processor, and only the power is connected to the distributed lamp bodies to control the power - on and power - off of the LEDs therein. However, this scheme currently has relatively high requirements for the chips of the vehicle body processor because the vehicle body processor not only has to process the control related to the lamps; moreover, for complex lighting effects, this scheme still has certain limitations and is rarely used at present.

[0004] The prior art has realized the control of distributed lamps, but there are still deficiencies in the design. Facing the increasing number of combined lamp effects and the gradually rich application scenarios, this scheme poses great challenges to the control of delay and synchronization. A lamp is controlled independently by multiple systems, and there is still room for improvement in terms of integrity and consistency. In addition, the key lies in the cost. This means that a lamp is controlled by multiple systems, the cost configuration space is insufficient, and the dimension of cost reduction is scarce. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and propose a tree - type architecture system for controlling a split - type headlamp, which can effectively reduce the manufacturing cost of the control system, still maintain a certain degree of integrity and consistency at the control system level, and avoid the influence of multiple lamp bodies on the system response in terms of structure.

[0006] To solve the above - mentioned technical problems, the technical solution of the utility model is as follows:

[0007] A tree - type architecture system for controlling a split - type headlight, which includes a body controller, a lamp control module, an upper combined lamp, and a lower combined lamp;

[0008] The upper combined lamp includes an upper combined lamp drive module and an upper combined lamp load module, and the lower combined lamp includes a lower combined lamp communication module, a lower combined lamp drive module, and a lower combined lamp load module;

[0009] The body controller is connected to the lamp control module;

[0010] The lamp control module is connected to the lower combined lamp drive module through the lower combined lamp communication module, and the lower combined lamp drive module is connected to the lower combined lamp load module;

[0011] The lamp control module is connected to the upper combined lamp drive module, and the upper combined lamp drive module is connected to the upper combined lamp load module.

[0012] Furthermore, the lamp control module includes an input power protection module, a boost regulator, a voltage regulator, a memory, a first CAN transceiver, a microcontroller, a second CAN transceiver, and a third CAN transceiver;

[0013] The input power protection module obtains power from the body controller to supply power to the boost regulator, the voltage regulator, the second CAN transceiver, and the lower combined lamp drive module;

[0014] The boost regulator supplies power to the upper combined lamp drive module;

[0015] The microcontroller interacts with the body controller through the first CAN transceiver, and the first CAN transceiver also supplies power to the microcontroller;

[0016] The voltage regulator supplies power to the memory and the first CAN transceiver;

[0017] The memory is connected to the microcontroller. The microcontroller sends internal messages to the upper combined lamp drive module through the first CAN transceiver. The microcontroller is connected to the upper combined lamp drive module, and the microcontroller communicates with the lower combined lamp communication module through the third CAN transceiver.

[0018] Furthermore, the upper combined lamp load module includes upper combined lamp LEDs, a motor, and a fan. The motor is used to adjust the irradiation angle of the upper combined lamp LEDs, and the fan is used to dissipate heat from the upper combined lamp LEDs.

[0019] Furthermore, the upper combined lamp drive module includes an upper combined lamp buck regulator, a switch - on - off lamp circuit, an upper combined lamp LED driver chip, a sampling circuit, a heat monitoring circuit, a BIN monitoring circuit, a high - side switch, and a motor driver chip;

[0020] The input end of the upper combined lamp buck regulator is connected to the output end of the boost regulator. The output end of the upper combined lamp buck regulator supplies power to the switch lamp circuit, the upper combined lamp LED driving chip, the sampling circuit, the heat monitoring circuit, and the BIN monitoring circuit. The high-side switch is powered by the input power protection module, and the motor driving chip is powered by the input power protection module;

[0021] The switch lamp circuit is connected to the upper combined lamp LED;

[0022] The second CAN transceiver is connected to the upper combined lamp LED through the upper combined lamp LED driving chip;

[0023] The microcontroller is connected to the upper combined lamp LED through the sampling circuit, the heat monitoring circuit, and the BIN monitoring circuit respectively;

[0024] The microcontroller is connected to the motor through the motor driving chip;

[0025] The microcontroller is connected to the fan through the high-side switch.

[0026] Furthermore, the lower combined lamp communication module includes a fourth CAN transceiver. The input end of the fourth CAN transceiver is connected to the output end of the third CAN transceiver, and the output end of the fourth CAN transceiver is connected to the lower combined lamp driving module.

[0027] Furthermore, the lower combined lamp load module includes a lower combined lamp LED.

[0028] Furthermore, the lower combined lamp driving module includes a lower combined lamp buck regulator and a lower combined lamp LED driving chip. The lower combined lamp buck regulator is powered by the input power protection module. The lower combined lamp buck regulator supplies power to the lower combined lamp LED driving chip and the fourth CAN transceiver. The output end of the fourth CAN transceiver is connected to the lower combined lamp LED through the lower combined lamp LED driving chip.

[0029] By adopting the above technical solution, the present utility model integrates each independently controlled lamp body into a total control system, and then each sub-body is controlled by the subsystem. The most important and cost - highest - proportion logic control module and communication module in the control system are integrated or reused, which reduces the number of modules in the split - type headlight system and greatly reduces the manufacturing cost. Secondly, each split - type headlight is controlled by the same integrated control module, which greatly improves the integrity and consistency, and effectively optimizes the relative delay problem between each lamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic block diagram of a tree - type architecture system for controlling split - type headlights of the present utility model;

[0031] Figure 2 This is the circuit schematic diagram of a tree - type architecture system for controlling a split - type headlight of the present utility model. Specific embodiments

[0032] In order to make the content of the present utility model easier to be clearly understood, the following further detailed description of the present utility model is given according to specific embodiments in conjunction with the accompanying drawings.

[0033] As Figure 1 shown, this embodiment provides a tree - type architecture system for controlling a split - type headlight, which includes a body controller 20, a lamp control module 100, an upper combined lamp 1 and a lower combined lamp 2. Among them, the upper combined lamp 1 includes an upper combined lamp driving module 200 and an upper combined lamp load module 300, and the lower combined lamp 2 includes a lower combined lamp communication module 400, a lower combined lamp driving module 500 and a lower combined lamp load module 600;

[0034] The body controller 20 is connected to the lamp control module 100;

[0035] The lamp control module 100 is connected to the lower combined lamp driving module 500 through the lower combined lamp communication module 400, and the lower combined lamp driving module 500 is connected to the lower combined lamp load module 600;

[0036] The lamp control module 100 is connected to the upper combined lamp driving module 200, and the upper combined lamp driving module 200 is connected to the upper combined lamp load module 300.

[0037] As Figure 2 shown, the lamp control module 100 of this embodiment includes an input power protection module 101, a boost regulator 102, a voltage regulator 103, a memory 104, a first CAN transceiver 105, a microcontroller 106, a second CAN transceiver 107 and a third CAN transceiver 108;

[0038] The input power protection module 101 obtains power from the body controller 20 to supply power to the boost regulator 102, the voltage regulator 103, the second CAN transceiver 107 and the lower combined lamp driving module 500;

[0039] The boost regulator 102 supplies power to the upper combined lamp driving module 200;

[0040] The microcontroller 106 interacts with the body controller 20 through the first CAN transceiver 105, and the first CAN transceiver 105 also supplies power to the microcontroller 106;

[0041] The voltage regulator 103 supplies power to the memory 104 and the first CAN transceiver 105;

[0042] The memory 104 is connected to the microcontroller 106. The microcontroller 106 sends internal messages to the upper combined lamp driving module 200 through the first CAN transceiver 105. The microcontroller 106 is connected to the upper combined lamp driving module 200, and the microcontroller 106 communicates with the lower combined lamp communication module 400 through the third CAN transceiver 108.

[0043] This system has a unique interface with the body controller 20, obtains power from the body through the input power protection module 101, and interacts with the body controller 20 through the first CAN transceiver 105. In addition, no other lamp bodies are connected to the body. The input power protection module 101 and the boost regulator 102 in the lamp control module 100 provide power interfaces for each lamp body. The second CAN transceiver 107 and the third CAN transceiver 108 provide communication interfaces for each lamp body, and the microcontroller 106 provides some necessary direct instruction interfaces.

[0044] Among them, the upper combined lamp driving module 200 in the upper combined lamp 1 is connected to the interface provided by the lamp control module 100 to form a controlled upper combined lamp 1 subsystem. The upper combined lamp driving module 200 in the upper combined lamp 1 provides a load control interface and is connected to the upper combined lamp load module 300 to form a complete upper combined lamp 1 control loop. The lower combined lamp communication module 400 and the lower combined lamp driving module 500 in the lower combined lamp 2 are connected to the interface provided by the lamp control module 100 to form a controlled lower combined lamp 2 subsystem. The lower combined lamp communication module 400 and the lower combined lamp driving module 500 in the lower combined lamp 2 provide power and communication interfaces for each other, and the lower combined lamp load module 600 is connected to the LED power interface provided by the lower combined lamp driving module 500 to form a complete lower combined lamp 2 control loop.

[0045] As Figure 2 shown, the upper combined lamp load module 300 of this embodiment includes an upper combined lamp LED 301, a motor 302, and a fan 303. The motor 302 is used to adjust the irradiation angle of the upper combined lamp LED 301, and the fan 303 is used to dissipate heat from the upper combined lamp LED 301.

[0046] As Figure 2 shown, the upper combined lamp driving module 200 of this embodiment includes an upper combined lamp buck regulator 201, a switch lamp circuit 202, an upper combined lamp LED driving chip 203, a sampling circuit 204, a heat monitoring circuit 205, a BIN monitoring circuit 206, a high-side switch 208, and a motor driving chip 207;

[0047] The input terminal of the upper combined lamp buck regulator 201 is connected to the output terminal of the boost regulator 102. The output terminal of the upper combined lamp buck regulator 201 supplies power to the switch lamp circuit 202, the upper combined lamp LED driver chip 203, the sampling circuit 204, the heat monitoring circuit 205, and the BIN monitoring circuit 206. The high-side switch 208 is powered by the input power protection module 101, and the motor driver chip 207 is powered by the input power protection module 101.

[0048] The switch lamp circuit 202 is connected to the upper combined lamp LED 301.

[0049] The second CAN transceiver 107 is connected to the upper combined lamp LED 301 through the upper combined lamp LED driver chip 203.

[0050] The microcontroller 106 is respectively connected to the upper combined lamp LED 301 through the sampling circuit 204, the heat monitoring circuit 205, and the BIN monitoring circuit 206. The sampling circuit 204 is used to collect whether there is a fault in the upper combined lamp LED 301 and to switch the lamp on and off. The heat monitoring circuit 205 is used to monitor the working temperature of the upper combined lamp LED 301, and the BIN monitoring circuit 206 is used to identify the load parameters.

[0051] The microcontroller 106 is connected to the motor 302 through the motor driver chip 207.

[0052] The microcontroller 106 is connected to the fan 303 through the high-side switch 208. When the heat monitoring circuit 205 detects that the working temperature of the upper combined lamp LED 301 is too high, the fan 303 is turned on for heat dissipation.

[0053] As Figure 2 shown, the lower combined lamp communication module 400 of this embodiment includes a fourth CAN transceiver 401. The input terminal of the fourth CAN transceiver 401 is connected to the output terminal of the third CAN transceiver 108, and the output terminal of the fourth CAN transceiver 401 is connected to the lower combined lamp drive module 500.

[0054] As Figure 2 shown, the lower combined lamp load module 600 of this embodiment includes a lower combined lamp LED 601.

[0055] As Figure 2 shown, the lower combined lamp drive module 500 of this embodiment includes a lower combined lamp buck regulator 501 and a lower combined lamp LED driver chip 502. The lower combined lamp buck regulator 501 is powered by the input power protection module 101. The lower combined lamp buck regulator 501 supplies power to the lower combined lamp LED driver chip 502 and the fourth CAN transceiver 401. The output terminal of the fourth CAN transceiver 401 is connected to the lower combined lamp LED 601 through the lower combined lamp LED driver chip 502.

[0056] The working principle of the present utility model is as follows:

[0057] The second CAN transceiver 107, the third CAN transceiver 108 and the input power protection module 101 in the lamp control module 100 are one of the key factors for achieving the tree architecture. In this system architecture, the control of the headlamp by the body controller 20 is all processed by the lamp control module 100, and then corresponding to the control of the upper combined lamp 1 and the lower combined lamp 2 according to the specific content of the body request to complete the corresponding actions.

[0058] Expounding according to the power supply orientation, first, the power supply from the body to the lamp is connected to the input power protection module 101, and a series of operations such as reverse protection, filtering, and on / off are performed by this module. The relatively stable power supply is respectively input to the voltage regulator 103, the boost regulator 102 and the lower combined lamp buck regulator 501 in the lamp control module 100. The voltage regulator 103 provides a constant small voltage environment for the small voltage module to use. The boost regulator 102 inputs to the upper combined lamp buck regulator 201 to provide the working voltage environment for the upper combined lamp 1, and the lower combined lamp buck regulator 501 provides the working voltage environment for the lower combined lamp 2.

[0059] Expounding according to the communication control orientation, first, the function request from the body to the lamp is sent to the first CAN transceiver 105, and the microcontroller 106 obtains the request information of the body from the message of the first CAN transceiver 105. The microcontroller 106 judges the current task execution situation and performs logical processing on parameters such as sampling, heat, and BIN to obtain the actions that the upper combined lamp 1 and the lower combined lamp 2 need to execute, and sends the messages containing the action instructions to the second CAN transceiver 107 and the third CAN transceiver 108 respectively. The actions completed by the upper combined lamp 1 are sent from the second CAN transceiver 107 to the upper combined lamp LED driver chip 203, and the actions completed by the lower combined lamp 2 are sent from the third CAN transceiver 108 and the fourth CAN transceiver 401 to the lower combined lamp LED driver chip 502. Finally, the upper combined lamp LED driver chip 203 and the lower combined lamp LED driver chip 502 drive their respective load LEDs to act. In addition, some actions that need to be directly controlled will be directly sent from the microcontroller 106 to the corresponding function module through the instruction interface to complete the actions.

[0060] The above system architecture design solution not only realizes the control of distributed headlights, but mainly greatly reduces the system manufacturing cost and improves the integrity and consistency of the system. The reduction of the system manufacturing cost is mainly reflected in that the tree-shaped system architecture only needs to use one lamp control board and the same number of driving boards, communication boards and load boards as the number of lamp bodies. Different from the previous design of independent control of each lamp body, in the previous design structure, as many control boards, driving boards and load boards were required as there were lamp bodies, which directly reduces the cost brought by the control boards. The additional communication board only requires transceiver components, which reduces costs compared to the entire control board. Analyzing from the aspects of integrity and consistency, all actions executed by the tree-shaped system architecture are uniformly allocated by the lamp control module 100. All actions, no matter which lamp body they are distributed in, are scheduled by the same microcontroller 106, which greatly improves the integrity of the system. In addition, all scheduling adopts the time base of the lamp control board, and there is a unified standard in terms of processing time, which can achieve better consistency for controlling the same lighting function distributed in different lamp bodies.

[0061] The specific embodiments described above further elaborate on the technical problems solved, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tree-type architecture system for controlling split headlights, characterized in that: It comprises a vehicle body controller (20), a lamp control module (100), an upper combination lamp (1) and a lower combination lamp (2); The upper combination lamp (1) comprises an upper combination lamp driving module (200) and an upper combination lamp load module (300), and the lower combination lamp (2) comprises a lower combination lamp communication module (400), a lower combination lamp driving module (500) and a lower combination lamp load module (600); The vehicle body controller (20) is connected to the lamp control module (100); The lamp control module (100) is connected to a lower combination lamp driving module (500) via a lower combination lamp communication module (400), and the lower combination lamp driving module (500) is connected to a lower combination lamp load module (600); The lamp control module (100) is connected to an upper combination lamp driving module (200), and the upper combination lamp driving module (200) is connected to an upper combination lamp load module (300).

2. The tree-type architecture system for controlling split headlights according to claim 1, characterized in that: The lamp control module (100) comprises an input power protection module (101), a boost regulator (102), a voltage regulator (103), a memory (104), a first CAN transceiver (105), a microcontroller (106), a second CAN transceiver (107) and a third CAN transceiver (108); The input power protection module (101) obtains power from the vehicle body controller (20) to supply power to the boost regulator (102), the voltage regulator (103), the second CAN transceiver (107) and the lower combination lamp driving module (500); The boost regulator (102) supplies power to the upper combination lamp driving module (200); The microcontroller (106) interacts with the vehicle body controller (20) via a first CAN transceiver (105), and the first CAN transceiver (105) also supplies power to the microcontroller (106); The voltage regulator (103) supplies power to the memory (104) and the first CAN transceiver (105); The memory (104) is connected to a microcontroller (106), the microcontroller (106) sends an internal message to an upper combination lamp driving module (200) via a first CAN transceiver (105), the microcontroller (106) is connected to the upper combination lamp driving module (200), and the microcontroller (106) communicates with a lower combination lamp communication module (400) via a third CAN transceiver (108).

3. The tree-type architecture system for controlling split headlights according to claim 2, characterized in that: The upper combination lamp load module (300) comprises an upper combination lamp LED (301), a motor (302) and a fan (303); the motor (302) is used to adjust the irradiation angle of the upper combination lamp LED (301); and the fan (303) is used to dissipate heat from the upper combination lamp LED (301).

4. The tree-type architecture system for controlling split headlights according to claim 3, characterized in that: The upper combination lamp driving module (200) comprises an upper combination lamp step-down regulator (201), a switch lamp circuit (202), an upper combination lamp LED driving chip (203), a sampling circuit (204), a heat monitoring circuit (205), a BIN monitoring circuit (206), a high-side switch (208) and a motor driving chip (207); The input end of the upper combination lamp buck regulator (201) is connected to the output end of the boost regulator (102); the output end of the upper combination lamp buck regulator (201) supplies power to the switch lamp circuit (202), the upper combination lamp LED driver chip (203), the sampling circuit (204), the heat monitoring circuit (205) and the BIN monitoring circuit (206); the high side switch (208) is powered by the input power protection module (101); and the motor driver chip (207) is powered by the input power protection module (101); The switch lamp circuit (202) is connected to the upper combination lamp LED (301); The second CAN transceiver (107) is connected to the upper combination lamp LED (301) via the upper combination lamp LED driving chip (203); The microcontroller (106) is connected to the upper combination lamp LED (301) through a sampling circuit (204), a heat monitoring circuit (205) and a BIN monitoring circuit (206); The microcontroller (106) is connected to the motor (302) via a motor driving chip (207); The microcontroller (106) is connected to the fan (303) via a high-side switch (208).

5. The tree-type architecture system for controlling split headlights according to claim 2, characterized in that: The lower combination lamp communication module (400) comprises a fourth CAN transceiver (401), the input end of the fourth CAN transceiver (401) is connected to the output end of the third CAN transceiver (108), and the output end of the fourth CAN transceiver (401) is connected to the lower combination lamp driving module (500).

6. The tree-type architecture system for controlling split headlights according to claim 5, characterized in that: The lower combination lamp load module (600) comprises a lower combination lamp LED (601).

7. The tree-type architecture system for controlling split headlights according to claim 6, characterized in that: The lower combination lamp driving module (500) comprises a lower combination lamp buck regulator (501) and a lower combination lamp LED driving chip (502); the lower combination lamp buck regulator (501) is powered by an input power protection module (101); the lower combination lamp buck regulator (501) supplies power to the lower combination lamp LED driving chip (502) and a fourth CAN transceiver (401); and the output end of the fourth CAN transceiver (401) is connected to the lower combination lamp LED (601) via the lower combination lamp LED driving chip (502).

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