CN216545958U

CN216545958U - Control device for a motor vehicle and motor vehicle headlight

Info

Publication number: CN216545958U
Application number: CN202123253113.7U
Authority: CN
Inventors: 于晶
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-17
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a control device for an automobile and an automobile headlamp, comprising: the left lamp control unit is used for adjusting the horizontal irradiation angle and the vertical irradiation angle of the left headlamp; the right lamp control unit is used for adjusting the horizontal illumination angle and the vertical illumination angle of the right headlamp; the electronic control unit is connected with the left lamp slave controller and the right lamp slave controller through LIN lines, is also connected with the vehicle-mounted BCM controller, the EMS controller, the TCU controller, the ESP controller, the SAM controller and the PEPS controller through CAN buses, and is used for sending adjusting signals to the left lamp slave controller and the right lamp slave controller. The ECU is arranged in the headlamp, so that the space of an automobile can be saved, the connection length of the LIN line between the ECU and the slave controller is greatly reduced, the cost is reduced, and the connection line structure is simplified.

Description

Control device for a motor vehicle and motor vehicle headlight

Technical Field

The utility model relates to the technical field of automobiles, in particular to a control device of an automobile headlamp and an automobile.

Background

The automobile running process can meet various road conditions such as uneven road surfaces, uphill and downhill slopes or turning, and particularly when the automobile runs at night, besides the need of guaranteeing the safety illumination of the road surfaces, the automobile running at opposite sides is required to be prevented from being dazzled by light, so that the general automobile has a headlamp angle adjusting function, a more appropriate illumination range, an illumination angle and an illumination distance are provided, and the driver is ensured to have the best visibility at any time.

In the related art, an ECU (Electronic Control Unit) of an automotive headlamp is installed at a corresponding position of a vehicle body cab, and by collecting signals of a steering wheel angle, a vehicle speed, a front-rear axis height sensor and the like, the ECU analyzes and processes the signals, and then drives a dimming motor to adjust headlamps on the left side and the right side.

However, the above method not only occupies the space of the vehicle, but also has a complicated structure.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, a first object of the present invention is to provide a control device for an automotive headlamp, in which an ECU is installed inside the headlamp, so that not only can the space of an automobile be saved, but also the connection length of an LIN (Local Interconnect Network) line between the ECU and a slave controller is greatly reduced, the cost is reduced, and the connection line structure is simplified.

A second object of the utility model is to provide a motor vehicle.

The technical scheme adopted by the utility model is as follows:

a first aspect of the present invention provides a control device for an automotive headlamp, including: the left lamp control unit comprises a left lamp slave controller and a left lamp dimming motor, the left lamp slave controller is connected with the left lamp dimming motor through a signal line, the left lamp dimming motor is connected with the left headlamp, and the left lamp control unit is used for adjusting the horizontal irradiation angle and the vertical irradiation angle of the left headlamp; the right lamp control unit comprises a right lamp slave controller and a right lamp dimming motor, the right lamp slave controller is connected with the right lamp dimming motor through a signal line, the right lamp dimming motor is connected with the right headlamp, and the right lamp control unit is used for adjusting the horizontal illumination angle and the vertical illumination angle of the right headlamp; the Electronic Control Unit ECU is arranged in a lamp housing of the left headlamp or in a lamp housing of the right headlamp, and is connected with the left lamp slave Controller and the right lamp slave Controller through LIN lines, and is also connected with a vehicle-mounted BCM (Body Control Module), an EMS (Engine Management System), a TCU (Transmission Control Unit), an automatic Transmission Control Unit (ECU), an ESP (Electronic Stability Program, vehicle Body Electronic Stability System), a SAM (Signal Acquisition Module) and a PEPS (Passive Entry Passive Start System) through a CAN (Controller Area Network) bus, and is used for sending adjusting signals to the left lamp slave Controller and the right lamp slave Controller.

The control device for a vehicle headlamp according to the present invention may further include the following additional features:

specifically, the electronic control unit includes: the device comprises a three-axis acceleration sensor chip, a control chip and a control chip, wherein the three-axis acceleration sensor chip is used for detecting an acceleration signal of an automobile; and the S32K144 microcontroller is connected with the CAN bus through a CAN transceiver, connected with the LIN line through an LIN transceiver, and connected with the triaxial acceleration sensor chip through an SPI (serial peripheral Interface).

Specifically, the left lamp slave controller and the right lamp slave controller respectively include: two NCV70628 motor driving chips.

Specifically, the left lamp dimming motor and the right lamp dimming motor respectively include: a first motor and a second motor.

Further, the first motor and the second motor are stepping motors.

A second aspect of the present invention provides an automobile including the control device of the automotive headlamp according to the embodiment of the first aspect of the present invention.

The utility model has the beneficial effects that:

(1) the ECU is arranged in the headlamp, so that the space of an automobile can be saved, the connection length of the LIN line between the ECU and the slave controller is greatly reduced, the cost is reduced, and the connection line structure is simplified.

(2) The ECU is provided with an acceleration sensor chip, so that the change of the posture of the automobile body can be directly sensed, automobile height sensors of front and rear axles of the automobile are saved, the structure of the automobile is simplified, and the cost is greatly reduced.

Drawings

Fig. 1 is a block schematic diagram of a control device of a vehicle headlamp according to an embodiment of the present invention;

fig. 2 is a block schematic diagram of a control device of a vehicle headlamp according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a block schematic diagram of a control apparatus of a vehicle headlamp according to an embodiment of the present invention, as shown in fig. 1, the apparatus including: the left lamp control unit 1, the right lamp control unit 2 and the electronic control unit ECU.

The left lamp control unit 1 comprises a left lamp slave controller 11 and a left lamp dimming motor 12, the left lamp slave controller 11 is connected with the left lamp dimming motor 12 through a signal line, the left lamp dimming motor 12 is connected with the left headlamp 3, and the left lamp control unit 1 is used for adjusting the horizontal irradiation angle and the vertical irradiation angle of the left headlamp 3; the right lamp control unit 2 comprises a right lamp slave controller 21 and a right lamp dimming motor 22, the right lamp slave controller 21 is connected with the right lamp dimming motor 22 through a signal line, the right lamp dimming motor 22 is connected with the right headlamp 4, and the right lamp control unit 2 is used for adjusting the horizontal irradiation angle and/or the vertical irradiation angle of the right headlamp 4; the electronic control unit ECU is arranged in a lamp housing of the left headlamp or in a lamp housing of the right headlamp, connected with the left lamp slave controller 11 and the right lamp slave controller 21 through LIN lines, further connected with the vehicle-mounted BCM, the EMS, the TCU, the ESP, the SAM and the PEPS through CAN buses, and used for sending adjusting signals to the left lamp slave controller 11 and the right lamp slave controller 21.

Specifically, as shown in fig. 1, the electronic control unit ECU connects a BCM for providing a high beam and low beam state, an EMS control for providing an engine state, a TCU for providing a gear signal, an ESP for providing a vehicle speed signal, a SAM for providing a steering wheel angle signal, and a PEPS for providing a power supply signal, respectively, through a car CAN bus. The electronic control unit ECU is also communicatively connected to a left lamp Slave (Slave) controller 11 and a right lamp Slave controller 21 via private LIN lines. The electronic control unit ECU may calculate the adjustment angles of the left and right headlamps 3 and 4 by acquiring various vehicle-mounted signals provided by vehicle-mounted associated controllers (BCM, EMS, TCU, ESP, SAM, and PEPS) through the CAN bus, and transmit adjustment signals to the left and right lamp slave controllers 11 and 21 according to the adjustment angles, so that the left and right lamp slave controllers 11 and 21 control the left and right lamp dimming motors 12 and 22 according to the adjustment signals, and further control the irradiation horizontal irradiation angle and/or the vertical irradiation angle of the left and/or right headlamps 3 and 4.

The electronic control unit ECU can be arranged in the lamp housing of the left headlamp or in the lamp housing of the right headlamp, namely one headlamp is optionally arranged, compared with the electronic control unit ECU arranged at the corresponding position of a cockpit, the space of the automobile can be saved, the connection length of an LIN wire between the ECU and a slave controller is greatly reduced, the cost is reduced, and the connection wire structure is simplified.

According to an embodiment of the present invention, as shown in fig. 2, the electronic control unit ECU may include: triaxial acceleration sensor chip 31 and S32K144 microcontroller, triaxial acceleration sensor chip are used for detecting the acceleration signal of car, and S32K144 microcontroller passes through CAN transceiver and CAN bus connection, is connected with the LIN line through the LIN transceiver, is connected with triaxial acceleration sensor chip through SPI.

Specifically, the ECU adopts an NXP vehicle-scale S32K144 microcontroller, takes Arm Cortex-M4F as an inner core, has the inner core frequency of 112MHz, has good performance and high stability, and is suitable for the field of vehicle body electronics. And the ECU also adopts a three-axis acceleration sensor chip to detect the acceleration signal of the automobile so as to sense the change of the posture of the automobile body, when the posture of the automobile body changes, the output signal of the three-axis acceleration sensor chip is transmitted to the microcontroller S32K144 through the SPI for processing, and the angle required to be adjusted in the vertical direction of the headlamp is calculated. The S32K144 microcontroller acquires various vehicle-mounted signals provided by a vehicle-mounted correlation controller according to the CAN bus, and calculates the horizontal direction adjusting angle of the left headlamp 3 and/or the right headlamp 4 mainly according to a vehicle speed signal and a steering wheel turning angle signal.

According to an embodiment of the present invention, as shown in fig. 2, the left lamp slave controller 11 and the right lamp slave controller 21 respectively include: two NCV70628 motor driving chips. The left lamp dimming motor 12 and the right lamp dimming motor 22 respectively include: a first motor and a second motor.

That is, the left lamp slave controller 11 and the right lamp slave controller 12 both use two NCV70628 motor driving chips to respectively drive the first motor and the second motor. NCV70628 is equipped with LIN communication interface, and left lamp is connected with ECU from controller 11 and right lamp from controller 12 through private LIN line communication, and left lamp is still connected with left lamp dimming motor 12 and right lamp dimming motor 22 from controller 11 and right lamp from controller 12 through motor drive signal line.

In the embodiment of the present invention, the left lamp dimming motor 12 and the right lamp dimming motor 22 are stepping motors, and are respectively responsible for adjusting the horizontal illumination angle and the vertical illumination angle of the head lamp.

In summary, according to the control device of the automotive headlamp provided by the embodiment of the utility model, the ECU is installed inside the headlamp, so that the automotive space can be saved, the connection length of the LIN line between the ECU and the slave controller is greatly reduced, the cost is reduced, and the connection line structure is simplified; the ECU is provided with an acceleration sensor chip, so that the change of the posture of the automobile body can be directly sensed, automobile height sensors of front and rear axles of the automobile are saved, the structure of the automobile is simplified, and the cost is greatly reduced.

The utility model also provides a vehicle automobile which comprises the control device of the automobile headlamp.

According to the automobile, the ECU is arranged in the headlamp through the control device of the automobile headlamp, so that the automobile space can be saved, the connection length of an LIN (local interconnect network) line between the ECU and the slave controller is greatly reduced, the cost is reduced, and the connection line structure is simplified; the ECU is provided with an acceleration sensor chip, so that the change of the posture of the automobile body can be directly sensed, automobile height sensors of front and rear axles of the automobile are saved, the structure of the automobile is simplified, and the cost is greatly reduced.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The meaning of "plurality" is two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the connection may be direct or indirect through an intermediate medium, and may be communication between the inside of the vehicle and the two elements or the interaction relationship between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A control device of an automotive headlamp, characterized by comprising:

the left lamp control unit comprises a left lamp slave controller and a left lamp dimming motor, the left lamp slave controller is connected with the left lamp dimming motor through a signal line, the left lamp dimming motor is connected with the left headlamp, and the left lamp control unit is used for adjusting the horizontal irradiation angle and the vertical irradiation angle of the left headlamp;

the right lamp control unit comprises a right lamp slave controller and a right lamp dimming motor, the right lamp slave controller is connected with the right lamp dimming motor through a signal line, the right lamp dimming motor is connected with the right headlamp, and the right lamp control unit is used for adjusting the horizontal illumination angle and/or the vertical illumination angle of the right headlamp;

the electronic control unit is arranged in a lamp shell of the left headlamp or in a lamp shell of the right headlamp, connected with the left lamp slave controller and the right lamp slave controller through LIN lines, connected with the vehicle-mounted BCM, EMS, TCU, ESP, SAM and PEPS through CAN buses and used for sending adjusting signals to the left lamp slave controller and the right lamp slave controller.

2. The control device of the automotive headlamp according to claim 1, characterized in that the electronic control unit comprises:

the device comprises a three-axis acceleration sensor chip, a control chip and a control chip, wherein the three-axis acceleration sensor chip is used for detecting an acceleration signal of an automobile;

and the S32K144 microcontroller is connected with the CAN bus through a CAN transceiver, connected with the LIN line through a LIN transceiver and connected with the triaxial acceleration sensor chip through the SPI.

3. The control device of the automotive headlamp according to claim 1, characterized in that the left lamp slave controller and the right lamp slave controller respectively comprise: two NCV70628 motor driving chips.

4. The control device of the automotive headlamp according to claim 1, characterized in that the left lamp dimming motor and the right lamp dimming motor respectively comprise: a first motor and a second motor.

5. The control device of the automotive headlamp according to claim 4, characterized in that the first motor and the second motor are stepping motors.

6. An automobile characterized by comprising the control device of the automobile headlamp according to any one of claims 1 to 5.