CN215581781U

CN215581781U - Brake lamp control system

Info

Publication number: CN215581781U
Application number: CN202121401292.1U
Authority: CN
Inventors: 葛伟; 顾海全; 张莎; 吕彬
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-18
Anticipated expiration: 2031-06-23

Abstract

The utility model provides a brake lamp control system which comprises a vehicle body control module, a brake lamp hard wire detection module and a brake lamp LED module, wherein the vehicle body control module is used for receiving brake information of a driver, and generating and sending a brake lamp hard wire request signal; the brake lamp hard wire detection module is used for detecting a brake lamp hard wire request signal in real time, and after the fault-tolerant time interval of the lighting of the brake lamp LED module is exceeded, the brake lamp LED module is lighted through the brake lamp hard wire request signal; when the brake lamp LED module is lighted, the brake lamp LED module is used for warning a rear vehicle, the problem that when a CAN/LIN bus communication fails or an MCU control module is damaged, the brake lamp cannot be lighted to cause potential safety hazards on a road is solved, when the CAN/LIN bus communication fails or the MCU control module is damaged, the brake lamp CAN be lighted by an independent brake lamp hard wire signal, the warning effect on the rear vehicle is guaranteed, and the potential safety hazards on the road are effectively reduced.

Description

Brake lamp control system

Technical Field

The utility model relates to the technical field of vehicle lamp control, in particular to a brake lamp control system with a functional safety mode.

Background

With the common application of the CAN/LIN bus in vehicle communication, the normal use of the brake lamp cannot be ensured when the CAN/LIN bus fails in communication; and when the MCU in the main control unit is damaged, the brake lamp is also failed, namely the brake lamp fails, namely the brake lamp cannot be lightened due to communication failure or MCU failure when a driver steps on a brake, so that a rear vehicle cannot timely know the brake state of a front vehicle, and potential safety hazards of roads exist.

SUMMERY OF THE UTILITY MODEL

The brake lamp control system disclosed by the utility model solves the problem that when the CAN/LIN bus communication of a vehicle fails or an MCU control module is damaged, a brake lamp cannot be lightened to cause potential safety hazards on a road, and when the CAN/LIN bus communication fails or the MCU control module is damaged, the brake lamp CAN be lightened by an independent brake lamp hard wire signal, so that the warning effect on a rear vehicle is ensured, and the potential safety hazards on the road are effectively reduced.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a brake lamp control system which comprises a vehicle body control module, a brake lamp hard wire detection module and a brake lamp LED module, wherein the vehicle body control module receives brake information of a driver, generates and sends a brake lamp hard wire request signal; the brake lamp hard wire detection module is used for detecting a brake lamp hard wire request signal in real time, and after the fault-tolerant time interval of the lighting of the brake lamp LED module is exceeded, the brake lamp LED module is lighted through the brake lamp hard wire request signal; and when the brake lamp LED module is lightened, the brake lamp LED module is used for warning a vehicle behind.

Furthermore, the brake lamp control system also comprises a CAN/LIN communication module, an MCU control module and an LED drive module, wherein the CAN/LIN communication module is used for realizing the communication between the vehicle body control module and the MCU control module; the MCU control module is used for receiving the information sent by the vehicle body control module and controlling the LED driving module; the LED driving module is used for driving the brake lamp LED module.

Further, the brake lamp LED module comprises a through type lamp strip.

Further, the brake lamp LED module comprises at least one LED lamp bead.

Further, the brake lamp hard line detection signal is normal power, and is used for realizing the normal lighting of the brake lamp LED module.

Furthermore, the brake lamp hard line detection signal is a PWM wave for realizing the flicker of the brake lamp LED module.

The beneficial technical effects are as follows:

1. the utility model discloses a brake lamp control system which comprises a vehicle body control module, a brake lamp hard wire detection module and a brake lamp LED module, wherein the vehicle body control module is used for receiving brake information of a driver, and generating and sending a brake lamp hard wire request signal; the brake lamp hard wire detection module is used for detecting a brake lamp hard wire request signal in real time, and after the fault-tolerant time interval of the lighting of the brake lamp LED module is exceeded, the brake lamp LED module is lighted through the brake lamp hard wire request signal; when the LED module of the brake lamp is lighted, the LED module is used for warning a rear vehicle, so that the problem that the potential safety hazard exists on a road due to the fact that the brake lamp cannot be lighted when the CAN/LIN bus communication of the vehicle fails or the MCU control module is damaged is solved, and when the CAN/LIN bus communication fails or the MCU control module is damaged, the brake lamp CAN be lighted through an independent brake lamp hard wire signal, so that the warning effect on the rear vehicle is ensured, and the potential safety hazard of the road is effectively reduced;

2. according to the utility model, the LED driving module comprises an LED driving chip, the LED driving chip is provided with a failsafe mode, when the LED driving module does not receive a communication signal within a certain time period, the LED driving chip enters the failsafe mode, and the brake lamp LED module is lightened through the functional safety pin; when the brake lamp LED module lights, the brake lamp LED module is used for warning a rear vehicle, the problem that when the CAN/LIN bus communication of the vehicle fails, the brake lamp cannot be lighted to cause potential safety hazards on a road is solved, when the CAN/LIN bus communication fails, the brake lamp CAN be lighted by an independent brake lamp hard wire signal or an independent functional safety pin, the warning effect on the rear vehicle is guaranteed, and the potential safety hazards on the road are effectively reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of a brake lamp control system according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The utility model discloses a brake lamp control system, which is shown in figure 1 and comprises a vehicle body control module, a brake lamp hard wire detection module and a brake lamp LED module, wherein the vehicle body control module is used for receiving brake information of a driver, and generating and sending a brake lamp hard wire request signal; the brake lamp hard wire detection module is used for detecting a brake lamp hard wire request signal in real time, the brake lamp hard wire request signal is used for lighting the brake lamp LED module after the fault-tolerant time interval of lighting the brake lamp LED module is exceeded, and when the brake lamp hard wire request signal is normal electricity (the normal electricity is a positive power supply which is connected from a level positive electrode and is not controlled by any switch, relay and the like), the brake lamp is normally on; when the brake lamp hard line request signal is a PWM wave, the flashing effect of turning on and off the brake lamp is realized; when the brake lamp LED module is lighted, the brake lamp LED module is used for warning a vehicle behind, and preferably, the brake lamp LED module can be a through lamp strip and also can be composed of a plurality of LED lamp beads.

As an embodiment of the utility model, the wading light control system further comprises a CAN/LIN communication module, an MCU control module and an LED driving module, wherein the CAN/LIN communication module is used for realizing communication between the vehicle body control module and the MCU control module; the MCU control module is used for receiving the information sent by the vehicle body control module and controlling the LED driving module; the LED driving module is used for driving the brake lamp LED module and comprises an LED driving chip, and the LED driving chip is provided with a failsafe mode.

The working principle of the brake lamp control system disclosed by the utility model is as follows:

when the CAN/LIN communication module and the MCU control module work normally, the vehicle body control module receives information that a driver steps on a brake and sends the information to the MCU control module through the CAN/LIN communication module, and the MCU control module receives the brake information sent by the vehicle body control module and controls the LED driving module to drive the brake lamp LED module to be lightened so as to warn a rear vehicle;

when the CAN/LIN communication module or the MCU control module fails, the brake lamp hard wire detection module is a redundant signal wire of the brake lamp LED module, namely when the CAN/LIN bus communication of the car lamp system fails or the MCU control module fails, the brake lamp LED module CAN be lightened through an independent brake lamp hard wire signal, namely when the CAN/LIN bus communication of the car lamp system fails or the MCU control module fails, the car body control module receives brake information of a driver and sends out a brake lamp hard wire request signal, and when the brake lamp hard wire detection module detects that the brake lamp hard wire signal exists, the brake lamp LED module CAN be lightened to warn a rear vehicle; when the brake lamp hard line signal is a PWM wave, the brake lamp LED module is in a flashing type of turning on and off;

the brake lamp control system disclosed by the utility model also has another working method for lighting the brake lamp LED module, when the CAN/LIN bus communication of the car lamp system fails, the brake lamp LED module CAN be also lighted through a functional safety pin of an independent LED driving chip, namely, when the CAN/LIN bus communication of the car lamp system fails, a watchdog timer built in the LED driving chip cannot receive a communication signal after a certain time, the brake lamp LED module CAN automatically enter a failsafe mode, the LED driving chip CAN be lighted through the functional safety pin of the LED driving chip in the failsafe mode to warn a rear vehicle, and when the functional safety pin of the LED driving chip is connected with normal electricity, the brake lamp LED module is normally lighted; when the functional safety pin of the LED driving chip is connected with the PWM wave, the LED module of the brake lamp is in a flashing type of turning on and off.

The brake lamp control system disclosed by the utility model ensures that when the CAN/LIN communication module or the MCU control module fails, an independent brake lamp hard wire signal line or an independent functional safety pin CAN be used for lighting, the warning effect on rear vehicles is ensured, and the potential safety hazard of roads is effectively reduced.

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 do not necessarily 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.

The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A brake light control system, comprising:

the vehicle body control module is used for receiving brake information of a driver, generating and sending a brake lamp hard wire request signal;

the brake lamp hard wire detection module is used for detecting a brake lamp hard wire request signal in real time, and after the fault-tolerant time interval of the lighting of the brake lamp LED module is exceeded, the brake lamp LED module is lighted through the brake lamp hard wire request signal;

and the brake lamp LED module is used for warning a vehicle behind when being turned on.

2. The brake light control system of claim 1, further comprising:

the CAN/LIN communication module is used for realizing the communication between the vehicle body control module and the MCU control module;

the MCU control module is used for receiving the information sent by the vehicle body control module and controlling the LED driving module;

and the LED driving module is used for driving the brake lamp LED module.

3. The brake light control system of claim 1, wherein the brake light LED module comprises a pass-through light strip.

4. The brake light control system of claim 1 or 2, wherein the brake light LED module comprises at least one LED lamp bead.

5. The brake lamp control system of claim 1, wherein the brake lamp hard wire detection signal is a normal power for realizing the normal lighting of the brake lamp LED module.

6. The brake lamp control system of claim 1, wherein the brake lamp hard wire detection signal is a PWM wave to achieve flashing of the brake lamp LED module.

7. The brake lamp control system of claim 2, wherein the LED driving module comprises an LED driving chip, and the LED driving chip is provided with a failsafe mode.