Control device, method, body controller and vehicle for vehicle tail lights

Abstract

The application discloses a kind of control device, method, vehicle body controller and vehicle of vehicle tail light, and the control device of vehicle tail light includes: vehicle light controller, connect with vehicle tail light, for the lighting and closing control of multiple lamp groups in vehicle tail light;Vehicle body controller is connected with vehicle light controller, for when receiving lighting signal, according to the first target lamp group of lighting signal determination, and through vehicle light controller control first target lamp group lighting, and when detecting lamp group fault signal, according to the second target lamp group of lamp group fault signal determination, and through vehicle light controller control second target lamp group extinguish.The control device of vehicle tail light, when carrying out vehicle tail light control, need not set lighting logic control module and fault feedback module in vehicle light controller, but is detected by the output line of vehicle body controller self, need not increase redundant wire harness and pin, low in cost, and easy to meet EMC performance requirement.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a control device, method, body controller, and vehicle for a vehicle taillight. Background Technology

[0002] In the market, taillights, brake lights, and position lights on automobiles generally share a portion of the light-emitting surface. Switching between these functions requires a control circuit on the vehicle's lighting controller. To meet regulatory requirements, when some functional areas fail, it is necessary to control the illumination and extinguishing of other functional areas. This makes the lighting controller circuit design complex, costly, and carries a high risk of EMC (Electromagnetic Compatibility) non-compliance. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one objective of this invention is to provide a vehicle taillight control device that, when controlling the vehicle taillights, eliminates the need for a separate lighting logic control module and fault feedback module in the vehicle light controller. Instead, fault detection is performed via the output lines of the vehicle body controller, eliminating the need for additional wiring harnesses and pins, resulting in low cost and easy compliance with EMC performance requirements.

[0004] The second objective of this invention is to provide a method for controlling vehicle taillights.

[0005] The third objective of this invention is to provide a vehicle body controller.

[0006] The fourth objective of this invention is to provide a vehicle.

[0007] To achieve the above objectives, a first aspect of the present invention provides a control device for vehicle taillights. The device includes: a vehicle taillight controller connected to the vehicle taillights for controlling the illumination and deactivation of multiple light groups in the vehicle taillights; and a body controller connected to the vehicle taillight controller for determining a first target light group based on a lighting signal received, and controlling the first target light group to illuminate via the vehicle taillight controller; and determining a second target light group based on a light group fault signal detected, and controlling the second target light group to extinguish via the vehicle taillight controller.

[0008] The vehicle taillight control device of this invention includes a headlight controller and a body controller. When the body controller receives a lighting signal, it determines the target headlight group to be illuminated and controls the corresponding target headlight group to illuminate. When a headlight group fault signal is detected, it determines the target headlight group to be extinguished based on the fault signal and controls the corresponding target headlight group to extinguish. This vehicle taillight control device, without increasing the hardware cost of the BCM (Body Control Module), saves the lighting logic control module and fault feedback module in the headlight controller by changing the control software logic. Fault detection is performed using the output line of the body controller, eliminating the need for additional wiring harnesses and pins, resulting in low cost and easy compliance with EMC performance requirements.

[0009] In addition, the vehicle taillight control device according to the above embodiments of the present invention may also have the following additional technical features:

[0010] According to one embodiment of the present invention, the plurality of lamp groups include position lamp groups and brake lamp groups. The body controller includes a microcontroller unit, a first switch unit, and a second switch unit. The microcontroller unit is connected to the first switch unit and the second switch unit respectively. The first switch unit and the second switch unit are both connected to the vehicle lighting controller. The microcontroller unit is configured to: upon receiving a position lamp ignition signal, determine that the first target lamp group is the position lamp group, and control the built-in switch of the first switch unit to close, so as to control the position lamp group to illuminate through the vehicle lighting controller; upon receiving a brake lamp ignition signal, determine that the first target lamp group is both the position lamp group and the brake lamp group, and control the built-in switches of the first switch unit and the second switch unit to close, so as to control the position lamp group and the brake lamp group to illuminate through the vehicle lighting controller.

[0011] According to one embodiment of the present invention, the vehicle lighting controller includes: a first constant current unit connected between the built-in switch of the first switching unit and the power supply terminal of the position lamp group, for performing constant current processing on the preset power input through the built-in switch when the built-in switch of the first switching unit is closed, and supplying it to the position lamp group; and a second constant current unit connected between the built-in switch of the second switching unit and the power supply terminal of the brake lamp group, for performing constant current processing on the preset power input through the built-in switch when the built-in switch of the second switching unit is closed, and supplying it to the brake lamp group.

[0012] According to one embodiment of the present invention, both the first switching unit and the second switching unit further include a built-in fault detection module. The fault detection module is used to control the built-in switch of the corresponding switching unit to open when a lamp group fault signal is detected, and to feed back the lamp group fault signal to the microcontroller unit. The microcontroller unit is further used to control the built-in switch of the first switching unit to open when it receives the feedback brake lamp group fault signal.

[0013] According to an embodiment of the present invention, the fault detection module has a current detection terminal and an open circuit or short circuit detection terminal. The fault detection module is specifically used to: determine whether a current fault has occurred in the corresponding lamp group based on the input signal of the current detection terminal, and determine whether an open circuit or short circuit fault has occurred in the corresponding lamp group based on the input signal of the open circuit or short circuit detection terminal.

[0014] According to one embodiment of the present invention, the microcontroller unit is further configured to: transmit the lamp group fault signal to the vehicle bus, and transmit it to the vehicle's instrument cluster display prompt information via the vehicle bus, so as to provide a fault prompt.

[0015] According to one embodiment of the present invention, there are two position light groups and two brake light groups, respectively referred to as a first position light group, a second position light group, a first brake light group, and a second brake light group. The first position light group includes a left fixed side position light group and a left movable side position light group. The second position light group includes a right fixed side position light group and a right movable side position light group. The first brake light group includes a left movable side brake light group. The second brake light group includes a right movable side brake light group. The left movable side position light group, the right movable side position light group, the left movable side brake light group, and the right movable side brake light group are located between the left fixed side position light group and the right fixed side position light group, and share a common light-emitting surface.

[0016] To achieve the above objectives, a second aspect of the present invention provides a method for controlling vehicle taillights, the method comprising: upon receiving a lighting signal, determining a first target light group based on the lighting signal, and controlling the first target light group to illuminate via the vehicle light controller; and upon detecting a light group fault signal, determining a second target light group based on the light group fault signal, and controlling the second target light group to extinguish via the vehicle light controller.

[0017] The vehicle taillight control method of this invention can save the lighting logic control module and fault feedback module in the vehicle light controller by changing the control software logic without increasing the BCM hardware cost. Fault detection is performed through the output line of the body controller, without adding extra wiring harnesses and pins. It is low cost and easy to meet EMC performance requirements.

[0018] To achieve the above objectives, a third aspect of the present invention provides a vehicle body controller, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the vehicle taillight control method described above.

[0019] The body controller of this invention can save the lighting logic control module and fault feedback module in the headlight controller by changing the control software logic without increasing the BCM hardware cost. Fault detection is performed through the output line of the body controller itself, without the need to add extra wiring harnesses and pins. It is low cost and can easily meet EMC performance requirements.

[0020] To achieve the above objectives, a fourth aspect of the present invention provides a vehicle including a control device for vehicle taillights as described above.

[0021] In the vehicle of this embodiment, the taillight control device described above allows for the elimination of the lighting logic control module and fault feedback module in the headlight controller by modifying the control software logic without increasing BCM hardware costs. Fault detection is performed using the output lines of the body controller itself, eliminating the need for additional wiring harnesses and pins. This results in low cost and easy compliance with EMC performance requirements.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a structural block diagram of a vehicle taillight control device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a vehicle body controller according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a vehicle light controller according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the position light assembly and brake light assembly according to an embodiment of the present invention;

[0027] Figure 5 This is a flowchart of a vehicle taillight control method according to an embodiment of the present invention;

[0028] Figure 6 This is a structural block diagram of a vehicle body controller according to an embodiment of the present invention;

[0029] Figure 7 This is a structural block diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following will refer to the instruction manual appendix. Figure 1-7 The present invention provides a detailed description of the vehicle taillight control device, method, body controller, and vehicle according to specific implementation methods.

[0032] Figure 1 This is a structural block diagram of a vehicle taillight control device according to an embodiment of the present invention.

[0033] In one embodiment of the present invention, such as Figure 1 As shown, the vehicle taillight control device 100 includes: a vehicle light controller 20, connected to the vehicle taillight, for controlling the lighting and shutting off of multiple light groups in the vehicle taillight; and a body controller 10, connected to the vehicle light controller 20, for determining a first target light group based on the lighting signal when a lighting signal is received, and controlling the lighting of the first target light group through the vehicle light controller 20; and for determining a second target light group based on the lighting fault signal when a light group fault signal is detected, and controlling the shut-off of the second target light group through the vehicle light controller 20.

[0034] The body controller 10 can perform lamp group fault detection through its own output line without the need to add extra wiring harnesses and pins.

[0035] Specifically, the headlight controller 20 is connected between the body controller 10 and the vehicle taillights. When the body controller 10 receives a lighting signal, it determines the first target headlight group that needs to be illuminated and sends a corresponding drive signal to the headlight controller 20. After receiving the drive signal from the body controller 10, the headlight controller 20 controls the first target headlight group to illuminate. A fault detection module is installed in the body controller 10. When the body controller 10 detects a headlight group fault signal, it determines the second target headlight group that needs to be extinguished based on the headlight group fault signal and controls the second target headlight group to extinguish through the headlight controller 20.

[0036] More specifically, such as Figure 2As shown, the multiple light groups may include position light group 30 and brake light group 40. The lighting signals can be divided into position light lighting signals and brake light lighting signals. When the body controller 10 receives the position light lighting signal, the body controller 10 controls the position light group 30 to light up through the vehicle lighting controller 20; when the body controller 10 receives the brake light lighting signal, the body controller 10 controls the brake light group 40 and the position light group 30 to light up through the vehicle lighting controller 20.

[0037] Optionally, when the body controller 10 receives both the brake light illumination signal and the position light illumination signal simultaneously, the body controller 10 also controls the brake light assembly 40 and the position light assembly 30 to illuminate via the vehicle lighting controller 20.

[0038] In one embodiment of the present invention, such as Figure 2 As shown, the body controller 10 includes a microcontroller unit 1, a first switch unit 2, and a second switch unit 3. The microcontroller unit 1 is connected to the first switch unit 2 and the second switch unit 3, respectively. The first switch unit 2 and the second switch unit 3 are both connected to the headlight controller 20. The microcontroller unit 1 is used to: when receiving a position light ignition signal, determine that the first target light group is the position light group 30, and control the built-in switch S1 of the first switch unit 2 to close, so as to control the position light group 30 to be lit through the headlight controller 20; when receiving a brake light ignition signal, determine that the first target light group is the position light group 30 and the brake light group 40, and control the built-in switches (S1 and S2) of the first switch unit 2 and the second switch unit 3 to close, so as to control the position light group 30 and the brake light group 40 to be lit through the headlight controller 20.

[0039] Specifically, the body controller 10 includes a microcontroller unit 1, a first switch unit 2, and a second switch unit 3. The microcontroller unit 1 is connected to the first switch unit 2 and the second switch unit 3 respectively, and is used to control the built-in switches in the first switch unit 2 and the second switch unit 3 to turn off. The first switch unit 2 and the second switch unit 3 are both connected to the headlight controller 20, and are connected to the corresponding headlight groups through the headlight controller 20. The first switch unit 2 is connected to the position headlight group 30, and the second switch unit 3 is connected to the brake headlight group 40.

[0040] In this embodiment, the microcontroller unit 1 is connected to the vehicle bus and the vehicle combination switch, and receives lighting signals from the vehicle bus or the combination switch. Taking the vehicle bus sending a lighting signal as an example:

[0041] When the microcontroller unit 1 receives a position light ignition signal from the vehicle bus, it determines that the first target light group is position light group 30, controls the built-in switch S1 of the first switching unit 2 to close, and transmits a high-level VCC signal to the vehicle lighting controller 20, which then controls the position light group 30 to illuminate. In addition to illuminating upon receiving the position light ignition signal, the position light group 30 also illuminates upon receiving the brake light ignition signal. When the microcontroller unit 1 receives a brake light ignition signal from the vehicle bus, it identifies the first target light groups as position light group 30 and brake light group 40. After processing the brake light ignition signal, the microcontroller unit 1 first controls the built-in switch S2 of the second switching unit 3 to close, transmitting a high-level VCC signal to the headlight controller 20. The headlight controller 20 then controls the brake light group 40 to illuminate. When the brake light group 40 illuminates normally, the microcontroller unit 1 receives a feedback signal indicating that the brake light group 40 is fault-free. After processing, the microcontroller unit 1 then controls the built-in switch S1 of the first switching unit 2 to close, transmitting a high-level VCC signal to the headlight controller 20. The headlight controller 20 then controls the position light group 30 to illuminate. Therefore, when the microcontroller unit 1 receives the brake light ignition signal from the vehicle bus, both the brake light group 40 and the position light group 30 are illuminated.

[0042] In one embodiment of the present invention, such as Figure 3 As shown, the vehicle lighting controller 20 includes: a first constant current unit 4, connected between the built-in switch S1 of the first switch unit 2 and the power supply terminal of the position lamp group 30, for performing constant current processing on the preset power input through the built-in switch S1 when the built-in switch S1 of the first switch unit 2 is closed, and supplying it to the position lamp group 30; and a second constant current unit 5, connected between the built-in switch S2 of the second switch unit 3 and the power supply terminal of the brake lamp group 40, for performing constant current processing on the preset power input through the built-in switch S2 when the built-in switch S2 of the second switch unit 3 is closed, and supplying it to the brake lamp group 40.

[0043] Specifically, the vehicle lighting controller 20 includes a first constant current unit 4 and a second constant current unit 5. The first constant current unit 4 is connected between the built-in switch S1 of the first switch unit 2 and the power supply terminal of the position lamp group 30. When the microcontroller unit 1 receives the position lamp lighting signal, it controls the built-in switch S1 of the first switch unit 2 to close. One end of the built-in switch S1 is connected to a preset power supply (DC power supply, voltage can be 11~15V), and the other end is connected to the first constant current unit 4 of the vehicle lighting controller 20. When the built-in switch S1 is closed, the preset power supply is connected to the first constant current unit 4. The first constant current unit 4 performs constant current processing on the preset power supply and supplies power to the position lamp group 30, and the position lamp group 30 is lit. The second constant current unit 5 is connected between the built-in switch S2 of the second switching unit 3 and the power supply terminal of the brake lamp assembly 40. When the microcontroller unit 1 receives the brake lamp lighting signal, it controls the built-in switch S2 of the second switching unit 3 to close. One end of the built-in switch S2 is connected to a preset power supply, and the other end is connected to the second constant current unit 5 of the vehicle light controller 20. When the built-in switch S2 closes, the preset power supply is connected to the second constant current unit 5. The second constant current unit 5 performs constant current processing on the preset power supply and supplies power to the brake lamp assembly 40, which then lights up the brake lamp assembly 40. When the brake lamp assembly 40 lights up without obstruction, the microcontroller unit 1 controls the built-in switch S1 of the first switching unit 2 to close, thereby lighting up the position lamp assembly 30. The method of lighting up the position lamp assembly 30 is the same as the method of lighting up the position lamp assembly 30 when the microcontroller unit 1 receives the position lamp lighting signal, and will not be described again here.

[0044] In one embodiment of the present invention, such as Figure 3 As shown, both the first switch unit 2 and the second switch unit 3 have built-in fault detection modules. The fault detection modules are used to control the built-in switch of the corresponding switch unit to open when a lamp group fault signal is detected, and to feed back the lamp group fault signal to the microcontroller unit 1. The microcontroller unit 1 is also used to control the built-in switch S1 of the first switch unit 2 to open when it receives the feedback brake lamp group fault signal.

[0045] Specifically, each of the first switch unit 2 and the second switch unit 3 is equipped with a fault detection module, such as... Figure 2 , Figure 3As shown, a first fault detection module A1 is provided in the first switch unit 2, and a second fault detection module A2 is provided in the second switch unit 3. When the fault detection module detects a lamp group fault signal, it controls the built-in switch of the corresponding switch unit to open and feeds back the lamp group fault signal to the microcontroller unit 1. The first fault detection module A1 is used to detect the position lamp group 30. When the first fault detection module A1 detects a fault signal of the position lamp group 30, it controls the built-in switch S1 in the first switch unit 2 to open, and the position lamp group 30 is turned off. The second fault detection module A2 is used to detect the brake light assembly 40. When the second fault detection module A2 detects a fault signal in the brake light assembly 40, it controls the built-in switch S2 in the second switch unit 3 to open, and the brake light assembly 40 is turned off. At the same time, the second fault detection module A2 also feeds back the brake light assembly fault signal to the microcontroller unit 1. The microcontroller unit 1 controls the built-in switch S1 in the first switch unit 2 to open, and the position light assembly 30 is turned off. Therefore, when a fault is detected in the brake light assembly 40, the body controller 10 can control the position light assembly 30 to turn off without adding a brake light fault feedback line pin, saving hardware costs.

[0046] In one embodiment of the present invention, such as Figure 3 As shown, the fault detection module has a current detection terminal and an open circuit or short circuit detection terminal. The fault detection module is specifically used to: determine whether the corresponding lamp group has a current fault based on the input signal of the current detection terminal, and determine whether the corresponding lamp group has an open circuit or short circuit fault based on the input signal of the open circuit or short circuit detection terminal.

[0047] Specifically, such as Figure 3 As shown, T1 is used to detect open or short circuit conditions in the position lamp assembly 30. When T1 sends an open or short circuit signal to the first fault detection module A1, it is determined that the position lamp assembly 30 has an open or short circuit. T2 is used to detect whether the current of the position lamp assembly 30 is abnormal. When T2 sends a circuit fault signal to the first fault module A1, it is determined that the current of the position lamp assembly 30 is abnormal. T3 is used to detect open or short circuit conditions in the brake lamp assembly 40. When T3 sends an open or short circuit signal to the second fault detection module A2, it is determined that the brake lamp assembly 40 has an open or short circuit. T4 is used to detect whether the current of the brake lamp assembly 40 is abnormal. When T4 sends a circuit fault signal to the second fault module A2, it is determined that the current of the brake lamp assembly 40 is abnormal.

[0048] In one embodiment of the present invention, the microcontroller unit 1 is further configured to: transmit the lamp group fault signal to the vehicle bus, and transmit it to the vehicle's instrument cluster display prompt information via the vehicle bus to provide a fault prompt.

[0049] Specifically, both the first fault detection module A1 and the second fault detection module A2 feed back the corresponding fault information to the microcontroller unit 1. The microcontroller unit 1 is connected to the vehicle bus. When the microcontroller unit 1 receives the lamp group fault information, it transmits the information to the vehicle's instrument cluster display via the vehicle bus to provide a fault indication.

[0050] More specifically, when the microcontroller unit 1 receives an open or short circuit fault signal from the first fault detection module A1 for the position lamp assembly, the vehicle's instrument cluster displays "position lamp assembly open or short circuit"; when the microcontroller unit 1 receives a position lamp assembly current fault signal from the first fault detection module A1, the vehicle's instrument cluster displays "position lamp assembly current abnormal"; when the microcontroller unit 1 receives an open or short circuit fault signal from the second fault detection module A2 for the brake lamp assembly, the vehicle's instrument cluster displays "brake lamp assembly open or short circuit"; when the microcontroller unit 1 receives a brake lamp assembly current fault signal from the second fault detection module A2, the vehicle's instrument cluster displays "brake lamp assembly current abnormal".

[0051] It should be noted that the above-mentioned prompts can be displayed on the vehicle's instrument cluster or read out via voice.

[0052] In one embodiment of the present invention, such as Figure 4 As shown, there are two position light groups 30 and two brake light groups 40, respectively denoted as the first position light group, the second position light group, the first brake light group, and the second brake light group. The first position light group includes the left fixed side position light group ① and the left movable side position light group ③. The second position light group includes the right fixed side position light group ② and the right movable side position light group ④. The first brake light group includes the left movable side brake light group ⑤ and the second brake light group includes the right movable side brake light group ⑥. The left movable side position light group ③, the right movable side position light group ④, the left movable side brake light group ⑤, and the right movable side brake light group ⑥ are located between the left fixed side position light group ① and the right fixed side position light group ②, and share a common light-emitting surface.

[0053] Specifically, such as Figure 4 As shown, the first and second position light groups are symmetrical from left to right, as are the first and second brake light groups. The structure and function of the position light groups and brake light groups on both sides are identical; the above embodiments are explained using only one side as an example.

[0054] The vehicle taillight control device of this invention illuminates the position light group when the body controller receives a position light ignition signal, and controls the brake light group to illuminate when it receives a brake light ignition signal. Simultaneously, it provides feedback on normal brake light illumination and controls the position light group to illuminate. Without increasing the hardware of the body controller, by modifying the control logic, the position light group is illuminated simultaneously with the brake light group. Furthermore, fault detection is performed via the output pin of the fault detection module, saving the need for the illumination logic control module and fault feedback module in the headlight controller. Fault detection is performed using the output line of the body controller itself, eliminating the need for additional wiring harnesses and pins, and easily meeting EMC performance requirements.

[0055] Based on the aforementioned vehicle taillight control device, the present invention also proposes a vehicle taillight control method.

[0056] In one embodiment of the present invention, such as Figure 5 As shown, the control methods for vehicle taillights include:

[0057] S1, upon receiving a lighting signal, determines the first target light group based on the lighting signal and controls the first target light group to be lit through the vehicle lighting controller.

[0058] S2, when a lamp group fault signal is detected, the second target lamp group is determined based on the lamp group fault signal, and the second target lamp group is turned off by controlling the vehicle lamp controller.

[0059] Specifically, when the body controller 10 receives the lighting signal, it determines the first target light group that needs to be illuminated and sends a corresponding drive signal to the headlight controller 20. After receiving the drive signal from the body controller 10, the headlight controller 20 controls the first target light group to illuminate. A fault detection module is installed in the body controller 10. When the body controller 10 detects a light group fault signal, it determines the second target light group that needs to be extinguished based on the fault signal and controls the second target light group to extinguish through the headlight controller 20.

[0060] In one embodiment of the present invention, multiple light groups include position light groups 30 and brake light groups 40. The method is applied to a body controller 10, which includes a first switch unit 2 and a second switch unit 3. The lighting signals include position light lighting signals and brake light lighting signals. When a position light lighting signal is received, the first target light group is determined to be position light group 30, and the built-in switch of the first switch unit 2 is controlled to close, so as to control the position light group 30 to be lit through the vehicle lighting controller 20. When a brake light lighting signal is received, the first target light group is determined to be position light group 30 and brake light group 40, and the built-in switches of the first switch unit 2 and the second switch unit 3 are both controlled to close, so as to control the position light group 30 and brake light group 40 to be lit through the vehicle lighting controller 20.

[0061] Specifically, the multiple light groups may include position light group 30 and brake light group 40. The lighting signals can be divided into position light lighting signals and brake light lighting signals. When the body controller 10 receives a position light lighting signal, it controls the position light group 30 to illuminate via the headlight controller 20; when the body controller 10 receives a brake light lighting signal, it controls both the brake light group 40 and the position light group 30 to illuminate via the headlight controller 20. The body controller 10 includes a microcontroller unit 1, a first switch unit 2, and a second switch unit 3. The microcontroller unit 1 is connected to the first switch unit 2 and the second switch unit 3 respectively, and is used to control the built-in switches in the first switch unit 2 and the second switch unit 3 to turn off.

[0062] In this embodiment, the microcontroller unit 1 is connected to the vehicle bus and the vehicle combination switch, and receives lighting signals from the vehicle bus or the combination switch. Taking the vehicle bus sending a lighting signal as an example:

[0063] When the microcontroller unit 1 receives a position light ignition signal from the vehicle bus, it determines that the first target light group is position light group 30, controls the built-in switch S1 of the first switching unit 2 to close, and transmits a high-level VCC signal to the vehicle lighting controller 20, which then controls the position light group 30 to illuminate. In addition to illuminating upon receiving the position light ignition signal, the position light group 30 also illuminates upon receiving the brake light ignition signal. When the microcontroller unit 1 receives a brake light ignition signal from the vehicle bus, it identifies the first target light groups as position light group 30 and brake light group 40. After processing the brake light ignition signal, the microcontroller unit 1 first controls the built-in switch S2 of the second switching unit 3 to close, transmitting a high-level VCC signal to the headlight controller 20. The headlight controller 20 then controls the brake light group 40 to illuminate. When the brake light group 40 illuminates normally, the microcontroller unit 1 receives a feedback signal indicating that the brake light group 40 is fault-free. After processing, the microcontroller unit 1 then controls the built-in switch S1 of the first switching unit 2 to close, transmitting a high-level VCC signal to the headlight controller 20. The headlight controller 20 then controls the position light group 30 to illuminate. Therefore, when the microcontroller unit 1 receives the brake light ignition signal from the vehicle bus, both the brake light group 40 and the position light group 30 are illuminated.

[0064] In one embodiment of the present invention, the method for controlling vehicle taillights further includes: when a fault signal is detected in the position light group 30, controlling the built-in switch of the first switch unit 2 to open; and when a fault signal is detected in the brake light group 40, controlling both the built-in switch of the first switch unit 2 and the built-in switch of the second switch unit 3 to open.

[0065] Specifically, each of the first switch unit 2 and the second switch unit 3 is equipped with a fault detection module, such as... Figure 2 , Figure 3As shown, a first fault detection module A1 is provided in the first switch unit 2, and a second fault detection module A2 is provided in the second switch unit 3. When the fault detection module detects a lamp group fault signal, it controls the built-in switch of the corresponding switch unit to open and feeds back the lamp group fault signal to the microcontroller unit 1. The first fault detection module A1 is used to detect the position lamp group 30. When the first fault detection module A1 detects a fault signal of the position lamp group 30, it controls the built-in switch S1 in the first switch unit 2 to open, and the position lamp group 30 is turned off. The second fault detection module A2 is used to detect the brake light assembly 40. When the second fault detection module A2 detects a fault signal in the brake light assembly 40, it controls the built-in switch S2 in the second switch unit 3 to open, and the brake light assembly 40 is turned off. At the same time, the second fault detection module A2 also feeds back the brake light assembly fault signal to the microcontroller unit 1. The microcontroller unit 1 controls the built-in switch S1 in the first switch unit 2 to open, and the position light assembly 30 is turned off. Therefore, when a fault is detected in the brake light assembly 40, the body controller 10 can control the position light assembly 30 to turn off without adding a brake light fault feedback line pin, saving hardware costs.

[0066] In one embodiment of the present invention, the body controller has a current detection terminal and an open circuit or short circuit detection terminal, and the method further includes:

[0067] The current detection terminal is used to determine whether the corresponding lamp group has a current fault.

[0068] The open circuit or short circuit detection terminal determines whether the corresponding lamp group has an open circuit or short circuit fault.

[0069] Specifically, such as Figure 3 As shown, T1 is used to detect open or short circuit conditions in the position lamp assembly 30. When T1 sends an open or short circuit signal to the first fault detection module A1, it is determined that the position lamp assembly 30 has an open or short circuit. T2 is used to detect whether the current of the position lamp assembly 30 is abnormal. When T2 sends a circuit fault signal to the first fault module A1, it is determined that the current of the position lamp assembly 30 is abnormal. T3 is used to detect open or short circuit conditions in the brake lamp assembly 40. When T3 sends an open or short circuit signal to the second fault detection module A2, it is determined that the brake lamp assembly 40 has an open or short circuit. T4 is used to detect whether the current of the brake lamp assembly 40 is abnormal. When T4 sends a circuit fault signal to the second fault module A2, it is determined that the current of the brake lamp assembly 40 is abnormal.

[0070] In one embodiment of the present invention, the method for controlling vehicle taillights further includes: when a lamp group fault signal is detected, feeding back the lamp group fault signal to the vehicle bus, and transmitting it to the vehicle's instrument cluster display prompt information via the vehicle bus to provide a fault prompt.

[0071] Specifically, both the first fault detection module A1 and the second fault detection module A2 feed back the corresponding fault information to the microcontroller unit 1. The microcontroller unit 1 is connected to the vehicle bus. When the microcontroller unit 1 receives the lamp group fault information, it transmits the information to the vehicle's instrument cluster display via the vehicle bus to provide a fault indication.

[0072] More specifically, when the microcontroller unit 1 receives an open or short circuit fault signal from the first fault detection module A1 for the position lamp assembly, the vehicle's instrument cluster displays "position lamp assembly open or short circuit"; when the microcontroller unit 1 receives a position lamp assembly current fault signal from the first fault detection module A1, the vehicle's instrument cluster displays "position lamp assembly current abnormal"; when the microcontroller unit 1 receives an open or short circuit fault signal from the second fault detection module A2 for the brake lamp assembly, the vehicle's instrument cluster displays "brake lamp assembly open or short circuit"; when the microcontroller unit 1 receives a brake lamp assembly current fault signal from the second fault detection module A2, the vehicle's instrument cluster displays "brake lamp assembly current abnormal".

[0073] It should be noted that the above-mentioned prompts can be displayed on the vehicle's instrument cluster or read out via voice.

[0074] Based on the above-described method for controlling vehicle taillights, this invention also proposes a vehicle body controller.

[0075] In one embodiment of the present invention, such as Figure 6 As shown, the vehicle body controller 200 includes a memory 50 and a processor 60. The memory 50 stores a computer program, and when the computer program is executed by the processor 60, it implements the vehicle taillight control method described above.

[0076] Based on the aforementioned vehicle taillight control device, the present invention also proposes a vehicle.

[0077] In one embodiment of the present invention, such as Figure 7 As shown, vehicle 1000 includes a vehicle taillight control device 100 as described above.

[0078] This invention relates to a vehicle taillight control device, method, body controller, and vehicle. The body controller illuminates the position light group upon receiving a position light ignition signal and controls the brake light group to illuminate upon receiving a brake light ignition signal. Simultaneously, it provides feedback on normal brake light illumination and controls the position light group to illuminate. Without increasing the hardware of the body controller, by modifying the control logic, the position light group is illuminated simultaneously with the brake light group. Furthermore, fault detection is performed via the output pin of a fault detection module, eliminating the need for an additional illumination logic control module and fault feedback module in the headlight controller. Fault detection is performed using the body controller's built-in output lines, eliminating the need for additional wiring harnesses and pins and easily meeting EMC performance requirements.

[0079] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0080] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0081] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0086] 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. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control device for vehicle taillights, characterized in that, The device includes: A vehicle lighting controller, connected to the vehicle taillights, is used to control the lighting and shutting off of multiple light groups in the vehicle taillights; A body controller, connected to the headlight controller, is used to determine a first target headlight group based on a headlight signal when a headlight signal is received, and to control the first target headlight group to light up through the headlight controller; and to determine a second target headlight group based on a headlight group fault signal when a headlight group fault signal is detected, and to control the second target headlight group to turn off through the headlight controller. The plurality of light groups includes position light groups and brake light groups. The body controller includes a microcontroller unit, a first switch unit, and a second switch unit. The microcontroller unit is connected to the first switch unit and the second switch unit respectively. The first switch unit and the second switch unit are both connected to the vehicle light controller. The microcontroller unit is used for: Upon receiving a position light ignition signal, the system determines that the first target light group is the position light group and controls the built-in switch of the first switching unit to close, so as to control the position light group to be lit through the vehicle light controller. Upon receiving a brake light ignition signal, the system determines that the first target light group is the position light group and the brake light group, and controls the built-in switches of the first switch unit and the second switch unit to close, so as to control the position light group and the brake light group to be illuminated through the vehicle light controller; Both the first switching unit and the second switching unit also have a built-in fault detection module. The fault detection module is used to control the built-in switch of the corresponding switching unit to open when a lamp group fault signal is detected, and to feed back the lamp group fault signal to the micro control unit. The microcontroller unit is also used to control the built-in switch of the first switching unit to open when it receives a feedback brake lamp group fault signal; The vehicle lighting controller includes: The first constant current unit is connected between the built-in switch of the first switch unit and the power supply terminal of the position light group. When the built-in switch of the first switch unit is closed, it performs constant current processing on the preset power input through the built-in switch and supplies it to the position light group. The second constant current unit is connected between the built-in switch of the second switching unit and the power supply terminal of the brake lamp assembly. When the built-in switch of the second switching unit is closed, it performs constant current processing on the preset power input through the built-in switch and supplies it to the brake lamp assembly.

2. The vehicle taillight control device according to claim 1, characterized in that, The fault detection module has a current detection terminal and an open-circuit or short-circuit detection terminal. Specifically, the fault detection module is used for: The system determines whether a current fault has occurred in the corresponding lamp group based on the input signal of the current detection terminal, and determines whether an open circuit or short circuit fault has occurred in the corresponding lamp group based on the input signal of the open circuit or short circuit detection terminal.

3. The vehicle taillight control device according to claim 2, characterized in that, The microcontroller unit is also used for: The fault signal of the lamp assembly is transmitted to the vehicle bus, and then transmitted to the instrument cluster display of the vehicle via the vehicle bus to provide a fault indication.

4. The vehicle taillight control device according to claim 1, characterized in that, There are two position light groups and two brake light groups, respectively referred to as the first position light group, the second position light group, the first brake light group, and the second brake light group. The first position light group includes a left fixed side position light group and a left movable side position light group. The second position light group includes a right fixed side position light group and a right movable side position light group. The first brake light group includes a left movable side brake light group, and the second brake light group includes a right movable side brake light group. The left movable side position light group, the right movable side position light group, the left movable side brake light group, and the right movable side brake light group are located between the left fixed side position light group and the right fixed side position light group, and share a common light-emitting surface.

5. A method for controlling vehicle taillights, the method being applied to a vehicle body controller and used to control the lighting and extinguishing of multiple light groups, characterized in that... The method includes: Upon receiving a lighting signal, a first target light group is determined based on the lighting signal, and the first target light group is controlled to illuminate via the vehicle lighting controller; and When a lamp group fault signal is detected, a second target lamp group is determined based on the lamp group fault signal, and the second target lamp group is controlled to be turned off by the vehicle lamp controller. The plurality of light groups includes position light groups and brake light groups; the body controller includes a first switching unit and a second switching unit; the lighting signals include position light lighting signals and brake light lighting signals, wherein... Upon receiving the position light ignition signal, the system determines that the first target light group is the position light group and controls the built-in switch of the first switching unit to close, so as to control the position light group to be lit through the vehicle light controller. Upon receiving the brake light illumination signal, the system determines that the first target light group is the position light group and the brake light group, and controls the built-in switches of the first switch unit and the second switch unit to close, so as to control the position light group and the brake light group to be illuminated through the vehicle light controller; The method further includes: When a fault signal is detected in the position light group, the built-in switch of the first switching unit is controlled to open. When a brake light assembly fault signal is detected, the built-in switches of the first and second switching units are both disconnected.

6. The vehicle taillight control method according to claim 5, characterized in that, The method further includes: When a lamp assembly fault signal is detected, the lamp assembly fault signal is fed back to the vehicle bus and transmitted to the vehicle's instrument cluster display to provide a fault indication.

7. The vehicle taillight control method according to claim 5, characterized in that, The vehicle body controller has a current detection terminal and an open-circuit or short-circuit detection terminal, and the method further includes: The current detection terminal is used to determine whether the corresponding lamp group has a current fault. The open circuit or short circuit detection terminal determines whether the corresponding lamp group has an open circuit or short circuit fault.

8. A vehicle body controller, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, it implements the vehicle taillight control method as described in any one of claims 5-7.

9. A vehicle, characterized in that, Includes a control device for vehicle taillights as described in any one of claims 1-4.

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