Low-pixel ADB headlamp control system, ADB headlamp and automobile with low-pixel ADB headlamp control system

Abstract

The utility model relates to the technical field of automobile lamps, in particular to a low-pixel ADB headlamp control system, an ADB headlamp and an automobile with the ADB headlamp. Each of the left matrix lamp and the right matrix lamp comprises a control module and a light emitting module connected with the control module, and the camera is connected with the control module; the vehicle body controller is connected with the control module; the camera is used for collecting information of a target object in front of a vehicle, the vehicle body controller is used for obtaining vehicle body control information and vehicle body state information, and the control module obtains and processes the information of the target object in front of the vehicle, the vehicle body control information and the vehicle body state information to obtain a control signal and transmits the control signal to the light-emitting module. The light-emitting module receives and executes the control signal. According to the low-pixel ADB headlamp control system provided by the utility model, the number of LED lamp beads is reduced, the ADB function is realized, the realization cost is low, the problems of energy consumption and resource waste are avoided, the structure is simple, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a low-pixel ADB headlamp control system, an ADB headlamp and a vehicle thereof. Background Art

[0002] At present, the matrix high beam function of automobiles has become a development trend. The matrix high beam is mainly used to realize the high beam ADB function. Most of them adopt solutions with more than 20 LEDs. Through vision or light spot recognition cameras, they can identify luminous objects (such as vehicles) or non-luminous objects (such as pedestrians) in front at night, and give the signal to the matrix high beam for processing. The objects recognized in front are shielded to avoid dazzling traffic participants.

[0003] Theoretically, the more LEDs a matrix headlight has, the more accurate the dark area will be when implementing the ADB function, and the better the visual effect will be. However, it will also bring many disadvantages. For example, higher-pixel matrix headlights will increase LED costs, light board costs, and light heat dissipation costs; higher pixels mean more energy consumption; the increase in the number of LEDs will not expand the overall effective front illumination area much, and adjacent LEDs will have a large overlapping illumination area, resulting in waste of resources and other problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to solve the technical problem that the existing ADB headlamp control system has many LEDs, high implementation cost, energy consumption and resource waste, and cannot meet user needs. The utility model provides a low-pixel ADB headlamp control system, which reduces the number of LED lamp beads and realizes the ADB function at the same time, has low implementation cost, avoids the problems of energy consumption and resource waste, has a simple structure, and has good practicality.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a low-pixel ADB headlamp control system, comprising:

[0006] Camera,

[0007] Left and right matrix lights, the left matrix light and the right matrix light both include a control module and a light emitting module connected to the control module, and the camera is connected to the control module;

[0008] A body controller connected to the control module;

[0009] Wherein, the control module includes: a first communication unit, a second communication unit, a third communication unit, an MCU unit, a BOOST unit, a BUCK unit and an MLC unit;

[0010] The first communication unit, the second communication unit, the third communication unit, the BOOST unit and the BUCK unit are all connected to the MCU unit;

[0011] The BOOST unit and the MLC unit are both connected to the BUCK unit.

[0012] The first communication unit is also connected to the vehicle body controller;

[0013] The second communication unit and the light emitting module are both connected to the MLC unit;

[0014] The third communication unit is also connected to the camera.

[0015] Further, specifically, the illumination range of the light emitting module after the ADB function is activated is -23.4° to +23.4°.

[0016] Further, specifically, the light emitting module includes eleven LED lamp beads;

[0017] The MLC unit includes a matrix control chip, the channels of the matrix control chip correspond one-to-one to the LED lamp beads, and the channels of the matrix control chip are connected to the corresponding LED lamp beads.

[0018] Further, specifically, after the ADB function of the left matrix lamp is activated, the brightness range of each of the eleven lamp beads from left to right is: [-23.4°, -10.5°], [-18.9°, -8.9°], [-15.0°, -7.1°], [-11.8°, -5.2°], [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1.2°, +6.5°] and [+3.2°, +9.2°].

[0019] Further, specifically, after the ADB function of the right matrix lamp is activated, the left and right brightness ranges of the eleven lamp beads from left to right are: [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1.2°, +6.5°], [+3.2°, +9.2°], [+5°, +12.0°], [+6.9°, +15.0°], [+8.6°, +18.9°] and [+10.5°, +23.4°].

[0020] Further, specifically, the first communication unit, the second communication unit and the third communication unit all include a CAN communication chip.

[0021] Further, specifically, the BOOST unit and the BUCK unit are connected to the MCU unit via SPI communication.

[0022] Further, specifically, the BUCK unit includes a DC-DC adaptive buck-boost chip.

[0023] An ADB headlamp adopts the low-pixel ADB headlamp control system as described above.

[0024] A car comprises the ADB headlamp as described above.

[0025] The beneficial effect of the utility model is that the low-pixel ADB headlight control system of the utility model reduces the number of LED lamp beads and realizes the ADB function at the same time through the connection between the BOOST unit, the BUCK unit and the MLC unit set in the control module, has low implementation cost, avoids the problems of energy consumption and waste of resources, has a simple structure, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a structural schematic diagram of the optimal embodiment of the utility model.

[0028] Figure 2 It is a detailed structural diagram of the control module of the optimal embodiment of the utility model.

[0029] Figure 3 It is a schematic diagram of the connection part of the light emitting module of the optimal embodiment of the utility model.

[0030] Figure 4 This is the circuit diagram of the BOOST unit of the optimal embodiment of the utility model.

[0031] Figure 5 This is the circuit diagram of the BUCK unit of the optimal embodiment of the utility model.

[0032] In the figure, 1 is a camera; 2 is a control module; 21 is a first communication unit; 22 is a second communication unit; 23 is a third communication unit; 24 is an MCU unit; 25 is a BOOST unit; 26 is a BUCK unit; 27 is an MLC unit; 3 is a light-emitting module; and 4 is a body controller. DETAILED DESCRIPTION

[0033] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0034] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1 As shown, the embodiment of the present application provides a low-pixel ADB headlamp control system, including: a camera 1, a left matrix lamp and a right matrix lamp, each of which includes a control module 2 and a light-emitting module 3 connected to the control module 2, and the camera 1 is connected to the control module 2; a body controller 4 is connected to the control module 2. The camera 1 is used to collect information about the target in front of the vehicle, and the body controller 4 is used to obtain body control information and body status information. The control module 2 obtains and processes the information about the target in front of the vehicle, the body control information and the body status information, obtains a control signal, and transmits the control signal to the light-emitting module 3, and the light-emitting module 3 implements the ADB function based on the control signal.

[0037] The control module 2 includes: a first communication unit 21, a second communication unit 22, a third communication unit 23, an MCU unit 24, a BOOST unit 25, a BUCK unit 26 and an MLC unit 27; the first communication unit 21, the second communication unit 22, the third communication unit 23, the BOOST unit 25 and the BUCK unit 26 are all connected to the MCU unit 24; the BOOST and the MLC unit 27 are all connected to the BUCK unit 26. The first communication unit 21 is also connected to the vehicle body controller 4; the second communication unit 22 and the light emitting module 3 are also connected to the MLC unit 27; the third communication unit 23 is also connected to the camera 1.

[0038] The MCU unit 24 controls the BOOST unit 25 to perform voltage boosting and BUCK current output, provides working voltage for the MLC unit 27 and the light-emitting module 3 through the BUCK unit 26, obtains body control information and body status information through the first communication unit 21, and transmits them to the MCU unit 24; obtains target object information in front of the vehicle through the third communication unit 23, and transmits it to the MCU unit 24; the MCU unit 24 identifies whether it is a valid target object based on the obtained target object information in front of the vehicle. If it is a valid target object, the light and dark areas that need to be closed or adjusted by the light-emitting module 3 are obtained according to the valid target object information in front of the vehicle and the angle information of each LED lamp bead in the light-emitting module 3. Before the MCU unit 24 controls the light-emitting module 3 to close or adjust the light and dark areas, it will also determine whether the conditions for turning on the ADB function are met based on the body control information and the body status information. If so, the MCU unit 24 controls the light-emitting module 3 to close or adjust the light and dark areas to realize the ADB function.

[0039] In addition, the state information of the MLC unit 27 is obtained through the second communication unit 22 and transmitted to the MCU unit 24. The state information includes whether the channel connecting the MLC unit 27 and the light-emitting module 3 is open or short-circuited, the temperature information of the light-emitting module 3, and the BIN resistance value of the light-emitting module 3. When the channel connecting the MLC unit 27 and the light-emitting module 3 is open or short-circuited, the MCU unit 24 issues a fault alarm; when the MCU unit 24 detects that the temperature information of the light-emitting module 3 is too high, the MCU unit 24 reduces the BUCK current output based on the BIN resistance value of the light-emitting module 3 and the current temperature information, so as to improve the safety and stability of the control system.

[0040] It should be noted that the vehicle body status information includes but is not limited to vehicle speed information, light information, rainfall information, low beam switch information, high beam switch information, Auto light information, high beam lever information and ADB opening information. The ADB high beam function can only be turned on when it is in the activated state.

[0041] In the embodiment, the illumination range of the ADB headlight after the ADB function is activated is -23.4° to +23.4°, wherein the left and right illumination range of the left matrix light is -23.4° to +9.2°, and the left and right illumination range of the right matrix light is -9.2° to +23.4°.

[0042] For further information, see Figure 3 As shown, the light module 3 includes eleven LED lamp beads, and two adjacent lamp beads are connected in series; the MLC unit 27 includes a matrix control chip, and the channels of the matrix control chip correspond to the LED lamp beads one by one, and the channels of the matrix control chip are connected to the corresponding LED lamp beads. The ADB high beam function is realized by the BOOST unit 25, the BUCK unit 26 and the MLC unit 27, which can reduce the requirements for the heat sink and achieve low cost.

[0043] In this embodiment, the independent channel control of the matrix control chip can realize the control of the on and off and brightness adjustment of a single LED lamp bead. After the ADB function of the left matrix lamp is activated, the left and right brightness ranges of the eleven lamp beads from left to right are: [-23.4°, -10.5°], [-18.9°, -8.9°], [-15.0°, -7.1°], [-11.8°, -5.2°], [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1. After the ADB function of the right matrix lamp is activated, the brightness range of each of the eleven lamp beads from left to right is: [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1.2°, +6.5°], [+3.2°, +9.2°], [+5°, +12.0°], [+6.9°, +15.0°], [+8.6°, +18.9°] and [+10.5°, +23.4°]. The overlapping degree of illumination area of ​​two adjacent LEDs is low. By controlling the on and off and brightness of a single LED, the ADB high beam can shield the target in front, saving energy consumption and avoiding waste of resources.

[0044] The first communication unit 21, the second communication unit 22 and the third communication unit 23 all include a CAN communication chip; the BOOST unit 25 and the BUCK unit 26 are connected to the MCU unit 24 via SPI communication to ensure effective and accurate transmission of data.

[0045] See also Figure 4As shown, the BOOST unit 25 includes: a power control chip U2, inductors L2, L4, L5, L6, an NMOS tube Q1 and an NMOS tube Q4. The model of the power control chip U2 adopts the integrated chip of Texas Instruments TPS92682. Pin 1 of the power control chip U2, one end of the inductor L2, one end of the inductor L4, one end of the inductor L5 and one end of the inductor L6 are all connected to the output end of the power protection module 1. When pin 19 and pin 22 of the power control chip U2 are at a high level, the NMOS tube Q1 and the NMOS tube Q4 are turned on, and the output end of the power protection module 1 charges the inductors L2, L4, L5, and L6. When pin 19 and pin 22 of the power control chip U2 are at a low level, the NMOS tube Q1 and the NMOS tube Q4 are turned off, and the inductors L2, L4, L5, and L6 are discharged, and the voltage provided by the output end of the power protection module 1 is superimposed and output to achieve boost. The power conversion module 3 has two power output ends.

[0046] In order to ensure that the heat of the power control chip U2 is within a safe range, the current of the inductor and the NMOS tube Q1 and the NMOS tube Q4 must be limited within a certain range. The power conversion module 3 is also provided with current limiting resistors R1 and R43. The resistance values ​​of the current limiting resistors R1 and R43 are adjusted to limit the current and improve the working stability of the power conversion module 3. In order to ensure that the output voltage of the power conversion module 3 is not greater than 65V and the power control chip U2 can work normally, the pin 16 of the power control chip U2 is provided with overvoltage protection resistors R5 and R4, and the pin 25 of the power control chip U2 is provided with overvoltage protection resistors R5 and R4 to achieve overvoltage protection of the output voltage of the power control chip.

[0047] See also Figure 5 As shown, the BUCK unit includes a DC-DC adaptive buck-boost chip. The model of the DC-DC adaptive buck-boost chip U1 adopts the integrated chip of Texas Instruments TPS92520. The boost or buck is realized according to the requirements of the ADB headlight 8. The DC-DC adaptive buck-boost chip U1 has two identical inputs and outputs. The two identical inputs are connected to their corresponding power output terminals. Pins 28 and 29, as well as pins 20 and 21 of the DC-DC adaptive buck-boost chip U1 realize boosting. For example, when pins 28 and 29 of the DC-DC adaptive buck-boost chip U1 are at a high level, pin 18 charges the capacitor C62 and the inductor L8. When pins 28 and 29 of the DC-DC adaptive buck-boost chip U1 are at a low level, pin 18 discharges the capacitor C62 and the inductor L8 to obtain a stable constant current output, which is connected to the MLC unit 27.

[0048] An ADB headlamp adopts the above low-pixel ADB headlamp control system.

[0049] A car comprises the above ADB headlamp.

[0050] In summary, the utility model is a low-pixel ADB headlight control system, which reduces the number of LED lamp beads and realizes the ADB function at the same time through the connection between the BOOST unit, BUCK unit and MLC unit set in the control module. It has low implementation cost, avoids the problems of energy consumption and waste of resources, has a simple structure and good practicality.

[0051] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A low-pixel ADB headlight control system, characterized in that: include: Camera (1), Left and right matrix lights, the left matrix light and the right matrix light both comprising a control module (2) and a light emitting module (3) connected to the control module (2), and the camera (1) being connected to the control module (2); A vehicle body controller (4) connected to the control module (2); The control module (2) comprises: a first communication unit (21), a second communication unit (22), a third communication unit (23), an MCU unit (24), a BOOST unit (25), a BUCK unit (26) and an MLC unit (27); The first communication unit (21), the second communication unit (22), the third communication unit (23), the BOOST unit (25) and the BUCK unit (26) are all connected to the MCU unit (24); The BOOST and the MLC unit (27) are both connected to the BUCK unit (26); The first communication unit (21) is also connected to the vehicle body controller (4); The second communication unit (22) and the light emitting module (3) are both connected to the MLC unit (27); The third communication unit (23) is also connected to the camera (1).

2. The low-pixel ADB headlamp control system according to claim 1, characterized in that: The illumination range of the light emitting module (3) after the ADB function is activated is -23.4° to +23.4°.

3. The low-pixel ADB headlamp control system according to claim 2, characterized in that: The light-emitting module (3) comprises eleven LED lamp beads; The MLC unit (27) comprises a matrix control chip, the channels of the matrix control chip correspond one-to-one to the LED lamp beads, and the channels of the matrix control chip are connected to the corresponding LED lamp beads.

4. The low-pixel ADB headlamp control system according to claim 3, characterized in that: After the ADB function of the left matrix lamp is activated, the brightness range of the eleven lamp beads from left to right is: [-23.4°, -10.5°], [-18.9°, -8.9°], [-15.0°, -7.1°], [-11.8°, -5.2°], [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1.2°, +6.5°] and [+3.2°, +9.2°].

5. The low-pixel ADB headlamp control system according to claim 3, characterized in that: After the ADB function of the right matrix lamp is activated, the brightness range of each of the eleven lamp beads from left to right is: [-9.2°, -3.2°], [-6.5°, -1.5°], [-4.4°, +0.3°], [-2.5°, +2.3°], [-0.5°, +4.3°], [+1.2°, +6.5°], [+3.2°, +9.2°], [+5°, +12.0°], [+6.9°, +15.0°], [+8.6°, +18.9°] and [+10.5°, +23.4°].

6. The low-pixel ADB headlamp control system according to claim 1, characterized in that: The first communication unit (21), the second communication unit (22) and the third communication unit (23) all include a CAN communication chip.

7. The low-pixel ADB headlamp control system according to claim 1, characterized in that: The BOOST unit (25) and the BUCK unit (26) are connected to the MCU unit (24) via SPI communication.

8. The low-pixel ADB headlamp control system according to claim 1, characterized in that: The BUCK unit (26) comprises a DC-DC adaptive buck-boost chip.

9. An ADB headlamp, characterized in that: A low-pixel ADB headlamp control system as claimed in any one of claims 1 to 8 is adopted.

10. An automobile, characterized in that: Comprising the ADB headlamp as claimed in claim 9.

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