阅读说明：本技术 汽车制动灯控制电路、方法、装置及汽车 (Automobile brake lamp control circuit, method and device and automobile ) 是由 李谋海 李创举 张浩玉 曹浩 于 2019-11-28 设计创作，主要内容包括：本发明属于汽车制动灯技术领域,公开了一种汽车制动灯控制电路、方法、装置及汽车。汽车制动灯控制电路包括制动灯开关电路、发动机控制模块、车身控制模块、制动灯总成模块及制动防抱死模块；其中,制动灯开关电路的输入端与电源连接,制动灯开关电路的输出端与制动防抱死模块的输入端连接,制动灯开关电路的输出端还与发动机控制模块的输入端连接；制动灯开关电路的输出端还与车身控制模块的输入端连接；车身控制模块的输出端与制动灯总成模块的输入端连接,制动防抱死模块、发动机控制模块及制动灯总成模块的输出端分别接地。通过上述方式,解决了现有技术汽车制动灯制动开关的故障率高及成本高昂的技术问题。(The invention belongs to the technical field of automobile brake lamps, and discloses an automobile brake lamp control circuit, method and device and an automobile. The automobile brake lamp control circuit comprises a brake lamp switch circuit, an engine control module, an automobile body control module, a brake lamp assembly module and an anti-lock brake module; the input end of the brake lamp switch circuit is connected with the power supply, the output end of the brake lamp switch circuit is connected with the input end of the anti-lock braking module, and the output end of the brake lamp switch circuit is also connected with the input end of the engine control module; the output end of the brake lamp switch circuit is also connected with the input end of the vehicle body control module; the output end of the vehicle body control module is connected with the input end of the brake lamp assembly module, and the output ends of the anti-lock brake module, the engine control module and the brake lamp assembly module are respectively grounded. By means of the mode, the technical problems that in the prior art, the failure rate of the automobile brake lamp brake switch is high and the cost is high are solved.)

1. The automobile brake lamp control circuit is characterized by comprising a brake lamp switch circuit, an engine control module, an automobile body control module, a brake lamp assembly module and an anti-lock brake module; wherein the content of the first and second substances,

the input end of the brake lamp switch circuit is connected with a power supply, the output end of the brake lamp switch circuit is connected with the input end of the anti-lock brake module, and the output end of the anti-lock brake module is grounded;

the output end of the brake lamp switch circuit is also connected with the input end of the engine control module, and the output end of the engine control module is grounded;

the output end of the brake lamp switch circuit is also connected with the input end of the vehicle body control module, and the output end of the vehicle body control module is grounded;

the input end of the vehicle body control module is also connected with the input end of the stop lamp assembly module, and the output end of the stop lamp assembly module is grounded.

2. The automotive brake light control circuit of claim 1, wherein the body control module comprises a body control circuit, the brake light switch circuit comprises a brake light switch, and the body control circuit comprises a first resistor, a second resistor, and a third resistor; the first end of the first resistor is connected with the second end of the stop lamp switch, the second end of the first resistor is grounded, the first end of the second resistor is connected with the first end of the first resistor, the second end of the second resistor is grounded, the first end of the third resistor is connected with the first end of the second resistor, and the second end of the third resistor is grounded.

3. The control circuit for the brake lamp of the automobile according to claim 2, wherein the control circuit for the automobile body further comprises a first MOS transistor; the grid electrode of the first MOS tube is connected with the first end of the first resistor, the drain electrode of the first MOS tube is connected with the power supply, and the source electrode of the first MOS tube is connected with the input end of the brake lamp assembly module.

4. The automotive brake light control circuit of claim 3, wherein the engine control module comprises an engine control circuit comprising a fourth resistor, a fifth resistor, a first capacitor, and a second capacitor; the first end of the first capacitor is connected with the second end of the stop lamp switch, the second end of the first capacitor is grounded, the first end of the fourth resistor is connected with the first end of the first capacitor, the second end of the fourth resistor is grounded, the first end of the fifth resistor is connected with the first end of the fourth resistor, the second end of the fifth resistor is connected with the first end of the second capacitor, and the second end of the second capacitor is grounded.

5. The vehicle brake light control circuit of claim 4, wherein the anti-lock brake module comprises an anti-lock brake circuit, the anti-lock brake circuit comprising a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor, and a first diode; the anode of the first diode is connected with a power supply, the cathode of the first diode is connected with the first end of the sixth resistor, the second end of the sixth resistor is connected with the second end of the stop lamp switch, the first end of the seventh resistor is connected with the second end of the stop lamp switch, the second end of the seventh resistor is connected with the first end of the eighth resistor, the second end of the eighth resistor is grounded, the second end of the seventh resistor is further connected with the first end of the third capacitor, and the second end of the third capacitor is grounded.

6. The automotive brake light control circuit of claim 2, wherein the brake light assembly module comprises a brake light assembly circuit including a first brake light, a second brake light, and a high-mount brake light; the first end of the first brake lamp is connected with the vehicle body control circuit, the second end of the first brake lamp is grounded, the first end of the second brake lamp is connected with the first end of the first brake lamp, the second end of the second brake lamp is grounded, the first end of the high-position brake lamp is connected with the first end of the second brake lamp, and the second end of the high-position brake lamp is grounded.

7. The control circuit of claim 6, wherein the high-mount stop lamp comprises a light emitting diode and a ninth resistor; the first end of the ninth resistor is connected with the first end of the second brake lamp, the second end of the ninth resistor is connected with the anode of the light-emitting diode, and the cathode of the light-emitting diode is grounded.

8. An automobile brake lamp control method based on the automobile brake lamp control circuit according to any one of claims 1 to 7, characterized by comprising:

the brake lamp switch circuit sends a brake signal to the engine control module when receiving a brake pedal signal;

the engine control module receives the braking signal and sends the braking signal to the vehicle body control module through a CAN bus;

the vehicle body control module receives the brake signal and controls the brake lamp assembly module to execute lamp lighting operation according to the brake signal.

9. An automotive brake light control device, characterized in that the device comprises an automotive brake light control circuit according to any one of claims 1 to 7.

10. A vehicle, characterized in that the vehicle comprises the vehicle stop lamp control device according to claim 9.

Technical Field

The invention relates to the technical field of automobile brake lamps, in particular to an automobile brake lamp control circuit, method and device and an automobile.

Background

At present, the control of the automobile brake lamp is generally carried out in two modes, one mode is that the brake switch is used for direct drive control, and the other mode is that the switch control relay is used for indirect drive control. The brake switch directly drives the brake lamp, the engine control module and the anti-lock brake system. The requirement on the durability of the switch is high, and the market failure rate is high; and the cost is increased by adopting the relay control.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a control circuit, a method and a device for an automobile brake lamp and an automobile, and aims to solve the technical problems of high failure rate and high cost of an automobile brake lamp brake switch in the prior art.

In order to achieve the above object, the present invention provides an automobile brake light control circuit, which comprises a brake light switch circuit, an engine control module, a vehicle body control module, a brake light assembly module and an anti-lock brake module; wherein the content of the first and second substances,

the input end of the brake lamp switch circuit is connected with a power supply, the output end of the brake lamp switch circuit is connected with the input end of the anti-lock brake module, and the output end of the anti-lock brake module is grounded;

the output end of the brake lamp switch circuit is also connected with the input end of the engine control module, and the output end of the engine control module is grounded;

the output end of the brake lamp switch circuit is also connected with the input end of the vehicle body control module, and the output end of the vehicle body control module is grounded;

the input end of the vehicle body control module is also connected with the input end of the stop lamp assembly module, and the output end of the stop lamp assembly module is grounded.

Preferably, the vehicle body control module comprises a vehicle body control circuit, the stop lamp switch circuit comprises a stop lamp switch, and the vehicle body control circuit comprises a first resistor, a second resistor and a third resistor; the first end of the first resistor is connected with the second end of the stop lamp switch, the second end of the first resistor is grounded, the first end of the second resistor is connected with the first end of the first resistor, the second end of the second resistor is grounded, the first end of the third resistor is connected with the first end of the second resistor, and the second end of the third resistor is grounded.

Preferably, the vehicle body control circuit further comprises a first MOS transistor; the vehicle body control circuit further comprises a first MOS (metal oxide semiconductor) tube; the grid electrode of the first MOS tube is connected with the first end of the first resistor, the drain electrode of the first MOS tube is connected with the power supply, and the source electrode of the first MOS tube is connected with the input end of the brake lamp assembly module.

Preferably, the engine control module comprises an engine control circuit, and the engine control circuit comprises a fourth resistor, a fifth resistor, a first capacitor and a second capacitor; the first end of the first capacitor is connected with the second end of the stop lamp switch, the second end of the first capacitor is grounded, the first end of the fourth resistor is connected with the first end of the first capacitor, the second end of the fourth resistor is grounded, the first end of the fifth resistor is connected with the first end of the fourth resistor, the second end of the fifth resistor is connected with the first end of the second capacitor, and the second end of the second capacitor is grounded.

Preferably, the anti-lock brake module comprises an anti-lock brake circuit, and the anti-lock brake circuit comprises a sixth resistor, a seventh resistor, an eighth resistor, a third capacitor and a first diode; the anode of the first diode is connected with a power supply, the cathode of the first diode is connected with the first end of the sixth resistor, the second end of the sixth resistor is connected with the second end of the stop lamp switch, the first end of the seventh resistor is connected with the second end of the stop lamp switch, the second end of the seventh resistor is connected with the first end of the eighth resistor, the second end of the eighth resistor is grounded, the second end of the seventh resistor is further connected with the first end of the third capacitor, and the second end of the third capacitor is grounded.

Preferably, the brake lamp assembly module comprises a brake lamp assembly circuit, and the brake lamp assembly circuit comprises a first brake lamp, a second brake lamp and a high-position brake lamp; the first end of the first brake lamp is connected with the vehicle body control circuit, the second end of the first brake lamp is grounded, the first end of the second brake lamp is connected with the first end of the first brake lamp, the second end of the second brake lamp is grounded, the first end of the high-position brake lamp is connected with the first end of the second brake lamp, and the second end of the high-position brake lamp is grounded.

Preferably, the high-mount stop lamp comprises a light emitting diode and a ninth resistor; the first end of the ninth resistor is connected with the first end of the second brake lamp, the second end of the ninth resistor is connected with the anode of the light-emitting diode, and the cathode of the light-emitting diode is grounded.

In addition, in order to achieve the above object, the present invention further provides an automobile brake lamp control method based on the automobile brake lamp control circuit, the method including:

the brake lamp switch circuit sends a brake signal to the engine control module when receiving a brake pedal signal;

the engine control module receives the braking signal and sends the braking signal to the vehicle body control module through a CAN bus;

the vehicle body control module receives the brake signal and controls the brake lamp assembly module to execute lamp lighting operation according to the brake signal.

In addition, in order to achieve the above object, the present invention further provides an automotive brake lamp control device, which includes the automotive brake lamp control circuit as described above.

In addition, in order to achieve the above object, the present invention further provides an automobile, which includes the automobile brake lamp control device as described above.

The invention provides an automobile brake lamp control circuit, which comprises a brake lamp switch circuit, an engine control module, an automobile body control module, a brake lamp assembly module and an anti-lock brake module, wherein the engine control module is connected with the automobile body control module through a brake lamp switch; the input end of the brake lamp switch circuit is connected with a power supply, the output end of the brake lamp switch circuit is connected with the input end of the anti-lock brake module, and the output end of the anti-lock brake module is grounded; the output end of the brake lamp switch circuit is also connected with the input end of the engine control module, and the output end of the engine control module is grounded; the output end of the brake lamp switch circuit is also connected with the input end of the vehicle body control module, and the output end of the vehicle body control module is grounded; the input end of the vehicle body control module is also connected with the input end of the stop lamp assembly module, and the output end of the stop lamp assembly module is grounded. By the mode, the vehicle body control module and the brake lamp switch circuit are adopted to jointly control the brake lamp assembly module, and the technical problems of high failure rate and high cost of the brake lamp brake switch of the automobile in the prior art are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a functional block diagram of an embodiment of an automotive brake light control circuit according to the present invention;

FIG. 2 is a schematic circuit diagram of an embodiment of an automotive brake light control circuit according to the present invention;

fig. 3 is a schematic flow chart of a first embodiment of an automobile brake lamp control method based on an automobile brake lamp control circuit according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Brake lamp switch circuit	R1～R9	First to ninth resistors
200	Engine control module	C1～C3	First to third capacitors
				300	Vehicle body control module	D1	First diode
400	Brake lamp assembly module	L1	First brake lamp
				500	Anti-lock braking module	L2	Second brake lamp
K1	Brake lamp switch	L3	High-order brake lamp
				Q1	First MOS transistor	D2	Light emitting diode

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.

The invention provides a control circuit of an automobile brake lamp.

Referring to fig. 1, in an embodiment of the present invention, the automotive brake light control circuit includes a brake light switching circuit 100, an engine control module 200, a body control module 300, a brake light assembly module 400, and an anti-lock brake module 500; wherein the content of the first and second substances,

the input end of the brake lamp switch circuit 100 is connected with a power supply BATT, the output end of the brake lamp switch circuit 100 is connected with the input end of the anti-lock brake module 500, and the output end of the anti-lock brake module 500 is grounded;

the output end of the stop lamp switch circuit 100 is further connected with the input end of the engine control module 200, and the output end of the engine control module 200 is grounded;

the output end of the stop lamp switch circuit 100 is further connected with the input end of the vehicle body control module 300, and the output end of the vehicle body control module 300 is grounded;

the input end of the vehicle body control module 300 is further connected with the input end of the stop lamp assembly module 400, and the output end of the stop lamp assembly module 400 is grounded.

It should be noted that, the automobile brake lamp is generally installed at the rear of the vehicle, and the brake lamp is turned on when the vehicle brakes, so that the vehicle running behind can easily find the brake of the vehicle ahead, and the function of warning the vehicle behind is achieved, thereby achieving the purpose of preventing rear-end accidents.

In this embodiment, the engine control module 200 determines the actual state of the stop lamp switch circuit 100, generates a corresponding state message of the stop lamp switch circuit 100, and then sends the state message to the vehicle body control module 300, so that the vehicle body control module 300 drives the stop lamp assembly module 400 to turn on or turn off. The status message may include: a first status message and a second status message, the first status message may indicate that the brake light switch circuit 100 is closed; the second status message may indicate that the stop lamp switching circuit 100 is open. Specifically, the output end of the stop lamp switch circuit 100 is connected to the hard-wired input end of the engine control module 200 through a hard-wired line, the stop lamp switch circuit 100 includes a stop lamp switch, and when the stop lamp switch is turned off, the engine control module 200 can receive a turn-on signal of the stop lamp switch at a first time through the hard-wired line and generate a corresponding first state message according to the turn-on signal; when the stop lamp switch is turned off, the engine control module 200 can receive a turn-off signal of the stop lamp switch at a first time through a hard wire, and generate a corresponding second state message according to the turn-off signal. In this way, through the hard-wired connection, the on-off signal and the off-off signal of the stop lamp switch can be safely and effectively transmitted to the engine control module 200, and the engine control module 200 can accurately receive the actual state of the stop lamp switch circuit 100 at the first time, so that the vehicle body control module 300 can be driven subsequently according to the actual state of the stop lamp switch circuit 100, and the stop lamp of the stop lamp assembly module 400 is driven to be turned on or turned off by the vehicle body control module 300.

The embodiment provides an automobile brake lamp control circuit, which comprises a brake lamp switch circuit 100, an engine control module 200, a vehicle body control module 300, a brake lamp assembly module 400 and an anti-lock brake module 500; the input end of the stop lamp switch circuit 100 is connected to a power supply, the output end of the stop lamp switch circuit 100 is connected to the input end of the anti-lock brake module 500, and the output end of the anti-lock brake module 500 is grounded; the output end of the stop lamp switch circuit 100 is further connected with the input end of the engine control module 200, and the output end of the engine control module 200 is grounded; the output end of the stop lamp switch circuit 100 is further connected with the input end of the vehicle body control module 300, and the output end of the vehicle body control module 300 is grounded; the input end of the vehicle body control module 300 is further connected with the input end of the stop lamp assembly module 400, and the output end of the stop lamp assembly module 400 is grounded. Through the mode, the vehicle body control module 300 and the brake lamp switch circuit 100 are adopted to jointly control the brake lamp assembly module 400, and the technical problems of high failure rate and high cost of the brake lamp brake switch of the automobile in the prior art are solved.

Further, referring to fig. 2, fig. 2 is a schematic circuit structure diagram of an embodiment of the automotive brake light control circuit of the present invention; the vehicle body control module 300 comprises a vehicle body control circuit, the stop lamp switch circuit 100 comprises a stop lamp switch K1, and the vehicle body control circuit comprises a first resistor R1, a second resistor R2 and a third resistor R3; the first end of the first resistor R1 is connected to the second end of the stop lamp switch K1, the second end of the first resistor R1 is grounded, the first end of the second resistor R2 is connected to the first end of the first resistor R1, the second end of the second resistor R2 is grounded, the first end of the third resistor R3 is connected to the first end of the second resistor R2, and the second end of the third resistor R3 is grounded.

Further, the vehicle body control circuit further comprises a first MOS transistor Q1; the gate of the first MOS transistor Q1 is connected to the first end of the first resistor R1, the drain of the first MOS transistor is connected to the power source VCC, and the source of the first MOS transistor Q1 is connected to the input of the stop lamp assembly module 400.

The stop lamp switch K1 is connected to the vehicle body control module 300, and the vehicle body control circuit of the vehicle body control module 300 processes the closing signal of the stop lamp switch K1 and outputs the stop lamp assembly module 400 to control the lighting of the stop lamp set; on the other hand, the second end of the stop lamp switch K1 is connected to the engine control module 200, and the engine control module 200 converts the closing signal of the stop lamp switch K1 into a vehicle Control Area Network (CAN) signal and transmits the signal to the vehicle body control module 300 and the anti-lock brake module 500 which need the stop lamp switch information through a vehicle Control Area Network (CAN) line, so as to control the operation state of the vehicle body control module.

It is easy to understand that the first MOS transistor Q1 may be other types of switches. Specifically, the first MOS transistor Q1 may be an NMOS transistor, and the power source VCC may be a 24V dc source. When the vehicle body control module 300 outputs a high level, and at this time, when the voltage of the gate of the first MOS transistor Q1 relative to the source is greater than the threshold voltage, the threshold voltage is generally 2-4V, the first MOS transistor Q1 is turned on, and the stop lamp assembly module 400 performs a stop lamp lighting operation. When the stop lamp assembly module 400 is short-circuited, the short-circuit protection feature of the MOS transistor automatically turns off the first MOS transistor Q1. When the stop lamp assembly module 400 is disconnected, the vehicle body control module 300 determines that a fault occurs in the stop lamp assembly module 400, the vehicle body control module 300 outputs a low level, and the first MOS transistor Q1 is in an off state.

In practical applications, the first MOS transistor Q1 may also be implemented by using other switching elements. The vehicle body control module 300 is connected to a control terminal of the switching element, and the other terminal of the switching element is connected to the stop lamp assembly module 400. When the vehicle body control module 300 outputs a high level, the switching element is turned on, and the stop lamp assembly module 400 performs an operation of lighting the stop lamp. Meanwhile, the braking signal may also be transmitted to the vehicle body control module 300 through a CAN bus of another controller, for example, the braking signal of an engine exhaust brake switch may be transmitted to the engine control module 200 first, and the engine control module 200 transmits the braking signal to the vehicle body control module 300 through the CAN bus. Similarly, the hand brake switch of the trailer CAN also transmit the brake signal to the display controller and then to the body control module 300 through the CAN bus.

Further, the engine control module 200 includes an engine control circuit including a fourth resistor R4, a fifth resistor R5, a first capacitor C1, and a second capacitor C2; the first end of the first capacitor C1 is connected to the second end of the stop lamp switch K1, the second end of the first capacitor C1 is grounded, the first end of the fourth resistor R4 is connected to the first end of the first capacitor C1, the second end of the fourth resistor R4 is grounded, the first end of the fifth resistor R5 is connected to the first end of the fourth resistor R4, the second end of the fifth resistor R5 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded.

Further, the anti-lock brake module 500 includes an anti-lock brake circuit including a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third capacitor C3, and a first diode D1; an anode of the first diode D1 is connected to a power supply, a cathode of the first diode D1 is connected to a first end of the sixth resistor R6, a second end of the sixth resistor R6 is connected to a second end of the stop lamp switch K1, a first end of the seventh resistor R7 is connected to a second end of the stop lamp switch K1, a second end of the seventh resistor R7 is connected to a first end of the eighth resistor R8, a second end of the eighth resistor R8 is grounded, a second end of the seventh resistor R7 is further connected to a first end of the third capacitor C3, and a second end of the third capacitor C3 is grounded.

Further, the stop lamp assembly module 400 includes a stop lamp assembly circuit including a first stop lamp L1, a second stop lamp L2, and a high-mount stop lamp L3; the first end of the first brake lamp L1 is connected with the vehicle body control circuit, the second end of the first brake lamp L1 is grounded, the first end of the second brake lamp L2 is connected with the first end of the first brake lamp L1, the second end of the second brake lamp L2 is grounded, the first end of the high brake lamp L3 is connected with the first end of the second brake lamp L2, and the second end of the high brake lamp L3 is grounded.

It should be noted that the stop lamp assembly module 400 includes a stop lamp assembly circuit, which includes a first stop lamp L1, a second stop lamp L2 and a high stop lamp L3; the first brake lamp L1 may be a right brake lamp, which is disposed below the right side of the vehicle tail and is used for displaying the braking state of the vehicle body; the second brake lamp L2 may be a left brake lamp, and the left brake lamp may be disposed below the left side of the rear of the vehicle to display a braking state of the vehicle body; the high-level brake lamp L3 can be arranged in the middle of the vehicle body, and the height of the whole vehicle is higher than that of the brake lamps on the two sides, so that the braking state of the front vehicle of a driver of the rear vehicle can be obviously prompted.

Further, the high-mount stop lamp L3 includes a light emitting diode D2 and a ninth resistor R9; a first end of the ninth resistor R9 is connected to the first end of the second stop lamp L2, a second end of the ninth resistor R9 is connected to the anode of the led D2, and the cathode of the led D2 is grounded.

It is easily understood that the stop lamp assembly module 400 may be a stop lamp set composed of a plurality of stop lamps. The brake lamp group can comprise a main vehicle brake lamp, a main vehicle rear fog lamp, a trailer brake lamp, a trailer rear fog lamp and the like. When the brake lamp of the main vehicle breaks down and cannot be lightened, the rear fog lamp of the main vehicle can be lightened as a standby lamp, so that the situation that the rear vehicle cannot effectively and safely judge the front vehicle is avoided. Similarly, the rear fog lamp of the trailer also has the function of a standby lamp.

In addition, the invention further provides an automobile brake lamp control method based on the automobile brake lamp control circuit, referring to fig. 3, fig. 3 is a schematic flow diagram of a first embodiment of the automobile brake lamp control method based on the automobile brake lamp control circuit according to the invention.

In this embodiment, the method includes the steps of:

step S10: and the brake lamp switch circuit sends a brake signal to the engine control module when receiving a brake pedal signal.

It is easy to understand that the brake lamp is generally installed at the tail of the vehicle, and the brake lamp is lighted when the vehicle brakes, so that the vehicle running behind can easily find the brake of the vehicle in front, and the brake lamp plays a role in warning the vehicle behind, thereby achieving the purpose of preventing rear-end accidents.

It should be noted that the stop lamp switch circuit sends a brake signal to the engine control module when receiving a brake pedal signal. The brake lamp switch circuit comprises a brake lamp switch, the brake lamp switch is closed when a brake pedal signal is received, and a brake signal is sent to the engine control module.

Specifically, the engine control module judges the actual state of the stop lamp switch circuit, generates a corresponding state message of the stop lamp switch circuit, and then sends the state message to the vehicle body control module, so that the vehicle body control module drives the stop lamp assembly module to be turned on or turned off.

Step S20: the engine control module receives the braking signal and sends the braking signal to the vehicle body control module through the CAN bus.

Specifically, the engine control module judges the actual state of the stop lamp switch circuit, generates a corresponding state message of the stop lamp switch circuit, and then sends the state message to the vehicle body control module, so that the vehicle body control module drives the stop lamp assembly module to be turned on or turned off. The status message may include: the brake light control device comprises a first state message and a second state message, wherein the first state message can represent that the brake light switch circuit is closed; the second status message may indicate that the brake light switch circuit is open. Specifically, the output end of the stop lamp switch circuit is connected to the hard-wire input end of the engine control module through a hard wire, the stop lamp switch circuit comprises a stop lamp switch, and when the stop lamp switch is turned off, the engine control module can receive a turn-on signal of the stop lamp switch at the first time through the hard wire and generate a corresponding first state message according to the turn-on signal; when the stop lamp switch is disconnected, the engine control module can receive a disconnection signal of the stop lamp switch at the first time through a hard wire and generate a corresponding second state message according to the disconnection signal. Through the hard-wire connection, the closing signal and the opening signal of the brake lamp switch can be safely and effectively transmitted to the engine control module, the engine control module can accurately receive the actual state of the brake lamp switch circuit at the first time, the vehicle body control module is driven according to the actual state of the brake lamp switch circuit, and the brake lamp of the brake lamp assembly module is driven to be turned on or turned off through the vehicle body control module.

Step S30: the vehicle body control module receives the brake signal and controls the brake lamp assembly module to execute lamp lighting operation according to the brake signal.

It should be noted that the engine control module can accurately receive the actual state of the stop lamp switch circuit at the first time, so that the vehicle body control module is driven subsequently according to the actual state of the stop lamp switch circuit, and the vehicle body control module drives the stop lamp of the stop lamp assembly module to be turned on or turned off. The brake lamp assembly module may include a brake lamp assembly circuit, which may include a first brake lamp, a second brake lamp, and a high-mount brake lamp; the first brake lamp L1 may be a right brake lamp, which is disposed below the right side of the vehicle tail and is used for displaying the braking state of the vehicle body; the second brake lamp L2 may be a left brake lamp, and the left brake lamp may be disposed below the left side of the rear of the vehicle to display a braking state of the vehicle body; the high-level brake lamp L3 can be arranged in the middle of the vehicle body, and the height of the whole vehicle is higher than that of the brake lamps on the two sides, so that the braking state of the front vehicle of a driver of the rear vehicle can be obviously prompted.

In the embodiment, the brake lamp switch circuit sends a brake signal to the engine control module when receiving a brake pedal signal; the engine control module receives the braking signal and sends the braking signal to the vehicle body control module through a CAN bus; the vehicle body control module receives the brake signal and controls the brake lamp assembly module to execute lamp lighting operation according to the brake signal. By the mode, the vehicle body control module and the brake lamp switch circuit are adopted to jointly control the brake lamp assembly module, and the technical problems of high failure rate and high cost of the brake lamp brake switch of the automobile in the prior art are solved.

In addition, in order to achieve the above object, the present invention further provides an automotive brake lamp control device, which includes the automotive brake lamp control circuit as described above. The specific structure of the automobile brake lamp control circuit refers to the above embodiments, and the automobile brake lamp control device adopts all the technical schemes of all the above embodiments, so that all the beneficial effects brought by the technical schemes of the above embodiments are at least achieved, and are not repeated herein.

In addition, in order to achieve the above object, the present invention further provides an automobile, which includes the automobile brake lamp control device as described above. The specific structure of the automotive brake lamp control device refers to the above embodiments, and since the automotive adopts all the technical solutions of all the above embodiments, the automotive brake lamp control device at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.

It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.

In addition, the technical details that are not described in detail in this embodiment can be referred to the automobile brake lamp control circuit provided in any embodiment of the present invention, and are not described herein again.

Further, it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, circuit, article, or circuit that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, circuit, article, or circuit. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, circuit, article, or circuit that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art can clearly understand that the circuits of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the circuits according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.