Car lamp dormancy control system

Abstract

The invention discloses a car lamp dormancy control system, which comprises a central domain controller, an outer lamp relay module and an outer lamp control module, and is characterized in that the central domain controller is used for sending a relay signal to the outer lamp relay module and the outer lamp control module, and sending a network management message and an application message to the outer lamp control module; the outer lamp relay module is used for responding to a relay signal sent by the central domain controller so as to execute closing or opening operation of a relay. And the outer lamp control module is used for performing passive dormancy according to the relay signal sent by the central domain controller or performing active dormancy according to a network management message and an application message sent by the central domain controller. According to the system, through deep integration of a function safety mechanism, a power supply system diagnosis capability and careful division of vehicle use modes, the energy loss of the vehicle is greatly reduced, and the safety of vehicle functions is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle control, and in particular relates to a vehicle lamp dormancy control system. Background Art

[0002] As the issue of vehicle energy consumption has received increasing attention, how to effectively save power has become the focus of the industry. At present, most OEMs use the network management system in the AUTomotive Open System ARchitecture (AUTOSAR) for control and management, among which regional management of vehicle electrical appliances is the most common practice. However, in actual applications, network management often ignores the important consideration of functional safety, and there are still many areas that can be optimized in the entire network management system. Specifically, when applying the network management concept of the AUTOSAR architecture, the OEM failed to fully integrate the consideration of functional safety and failed to achieve a balance between the two. In addition, in the pursuit of power saving, the OEM often ignores the power consumption problem that still exists after the controller enters the dormant state, and the power saving effect is not optimal. At the same time, the OEM's division of vehicle usage scenarios is too rough, and most of them are only divided into three usage modes, which leads to inaccurate power saving measures, and the power saving potential in some usage scenarios needs to be further explored. Summary of the invention

[0003] The purpose of the present invention is to provide a headlight sleep control system, which, by integrating functional safety, power supply diagnosis and detailed vehicle usage modes, effectively solves the technical problems in the prior art that the network management system does not fully consider the functional safety issues, and the rough division of vehicle usage scenarios leads to inaccurate power saving measures.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention provides a vehicle lamp dormancy control system, which comprises: a central domain controller, an exterior lamp relay module and an exterior lamp control module;

[0006] The central domain controller is used to send relay signals to the exterior light relay module and the exterior light control module, and to send network management messages and application messages to the exterior light control module;

[0007] The exterior lamp relay module is used to respond to the relay signal sent by the central domain controller to perform a relay closing or opening operation;

[0008] The exterior light control module is used to perform passive sleep according to the relay signal sent by the central domain controller or to perform active sleep according to the network management message and application message sent by the central domain controller.

[0009] In an embodiment of the present invention, the relay signals, network management messages, and application messages sent by the central domain controller are different in different vehicle usage modes, where the vehicle usage modes include abandon mode, inactive mode, convenience mode, active mode, and driving mode.

[0010] In an embodiment of the present invention, the external lamp relay module includes a first external lamp relay and a second external lamp relay. One end of the first external lamp relay is connected to a first power source, and the other end is connected to the external lamp control module. One end of the second external lamp relay is connected to a second power source, and the other end is connected to the external lamp control module.

[0011] In an embodiment of the present invention, when the vehicle usage mode is inactive mode or convenience mode, the central domain controller controls the first external lamp relay to close and the second external lamp relay to open. If no lighting function is requested or activated within a preset time, the central domain controller controls the first external lamp relay to open, causing the external lamp control module to enter a passive sleep state.

[0012] In an embodiment of the present invention, when the vehicle usage mode is active mode or driving mode, the central domain controller controls both the first external lamp relay and the second external lamp relay to close, keeping the external lamp control module in a wakeful state at all times.

[0013] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message stop being sent after a first preset delay:

[0014] If no lighting function is activated, all the external lamp driving units of the external lamp control module enter an active sleep state;

[0015] If some lighting functions are activated, the external lamp driving units corresponding to the activated lighting functions remain in a wakeful state, and the remaining external lamp driving units enter an active sleep state.

[0016] In an embodiment of the present invention, if the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message continue to be sent continuously, all the external lamp driving units of the external lamp control module will stop receiving the application message after a first preset delay after the PNC jumps to the first state, and all the external lamp driving units of the external lamp control module always remain in a wakeful state.

[0017] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message stops being sent after a first preset time, while the application message continues to be sent:

[0018] All the external lamp driving units of the external lamp control module will stop receiving the application message after a first preset time delay after the PNC jumps to the first state. The external lamp driving units corresponding to the activated lamp functions will remain in the wake-up state, and the remaining external lamp driving units will enter the active sleep state after a second preset time delay after the network management message stops being sent.

[0019] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message stops being sent within the first preset time, while the application message continues to be sent:

[0020] All the external lamp driving units of the external lamp control module will stop receiving the application message after a first preset time delay after the PNC jumps to the first state. The external lamp driving units corresponding to the activated lamp functions will remain in the wake-up state, and the remaining external lamp driving units will enter the active sleep state after a second preset time delay after stopping receiving the application message.

[0021] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module are all in the second state, and the network management message stops being sent, while the application message continues to be sent:

[0022] All the external lamp driving units of the external lamp control module will stop receiving the application message after a first preset time delay after the network management message stops being sent. The external lamp driving units corresponding to the activated lamp functions will remain in the wake-up state, and the remaining external lamp driving units will enter the active sleep state after a second preset time delay after stopping receiving the application message.

[0023] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module are all in the second state, and the network management message and the application message stop being sent simultaneously:

[0024] The external lamp control module is forced to enter the functional safety state, and the external lamp driving units corresponding to the activated lamp functions will remain in the wake-up state.

[0025] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message stop being sent simultaneously within a third preset time:

[0026] The external lamp control module is forced to enter the functional safety state, and the external lamp drive units corresponding to the activated lamp functions remain in the wake-up state.

[0027] In an embodiment of the present invention, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message stop being sent simultaneously after more than the third preset time:

[0028] All the external lamp drive units of the external lamp control module will delay the first preset time after the PNC jumps to the first state before stopping receiving the application message. The external lamp drive units corresponding to the activated lamp functions remain in the wake-up state, and the remaining external lamp drive units will enter the active sleep state after delaying the second preset time after stopping receiving the application message.

[0029] As described above, a vehicle lamp sleep control system provided by the present invention includes a central domain controller, an external lamp relay module, and an external lamp control module. The central domain controller is used to send a relay signal to the external lamp relay module and the external lamp control module, and send a network management message and an application message to the external lamp control module. The external lamp relay module is used to respond to the relay signal sent by the central domain controller to perform the closing or opening operation of the relay. The external lamp control module is used to perform passive sleep according to the relay signal sent by the central domain controller or perform active sleep according to the network management message and the application message sent by the central domain controller. The power supply mechanism of the system is realized by the central domain controller controlling the external lamp relay module. The diagnosis of the power supply state depends on the external lamp control module detecting the contact end of the external lamp relay and feeding back the diagnosis result to the central domain controller through the CAN message signal, thus solving the problem that the central domain controller cannot directly diagnose the actual power supply state of the external lamp control module. In addition, the system is subdivided into an abandon mode, an inactive mode, a convenience mode, an active mode, and a driving mode according to the usage state of the vehicle, and a differentiated sleep strategy is formulated for each mode to achieve classified control and maximize the power saving effect.

[0030] The external lamp control module has two sleep mechanisms: active sleep and passive sleep. These two sleep mechanisms complement each other. Even if some control modules of the system fail, it can ensure that the external lamp control module still has a way to attempt to enter the sleep state, thus avoiding waste of resources. At the same time, the system fully considers the functional safety requirements. When the network management message indicates that the sleep condition is met, if the application message shows that the functional safety requirements are not met, the external lamp control module will not enter the sleep state and will forcibly activate the corresponding lighting function to ensure driving safety.

[0031] In addition, if a control module of the system has activated some lighting functions, even if the network management message indicates that the sleep condition is met at this time, the control module will maintain the activated lighting functions to meet the specific requests of the driver. Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 It is a structural block diagram of a vehicle lamp sleep control system provided by an exemplary embodiment of the present application.

[0034] Figure 2 It is a system block diagram of a vehicle lamp sleep control system provided by an exemplary embodiment of the present application.

[0035] Figure 3 It is a schematic diagram of the active sleep of the external lamp control module under the first working condition provided by an exemplary embodiment of the present application.

[0036] Figure 4 It is a schematic diagram of the active sleep of the external lamp control module under the second working condition provided by an exemplary embodiment of the present application.

[0037] Figure 5 It is a schematic diagram of the active sleep of the external lamp control module under the third working condition provided by an exemplary embodiment of the present application.

[0038] Figure 6 It is a schematic diagram of the active sleep of the external lamp control module under the fourth working condition provided by an exemplary embodiment of the present application.

[0039] Figure 7 It is a schematic diagram of the active sleep of the external lamp control module under the fifth working condition provided by an exemplary embodiment of the present application.

[0040] Figure 8 Schematic diagram of the active sleep of the external lamp control module under the sixth working condition provided by an exemplary embodiment of the present application.

[0041] Figure 9 Schematic diagram of the active sleep of the external lamp control module under the seventh working condition provided by an exemplary embodiment of the present application.

[0042] Figure 10 Schematic diagram of the active sleep of the external lamp control module under the eighth working condition provided by an exemplary embodiment of the present application.

[0043] Figure 11 Schematic diagram of the active sleep of the external lamp control module under the ninth working condition provided by an exemplary embodiment of the present application.

[0044] Reference numerals are as follows:

[0045] 100 Power supply

[0046] 200 External lamp relay module

[0047] 300 External lamp control module

[0048] 400 Central domain controller Detailed implementation manners

[0049] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0050] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0051] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0052] To solve the technical problems in the prior art that the network management system does not fully consider functional safety issues, and the power-saving measures are not precise enough due to the rough division of vehicle usage scenarios, the present invention provides a headlight sleep control system, which is mainly applied to the sleep control of vehicle exterior lights. By deeply integrating the functional safety mechanism, the power supply system diagnosis ability, and the carefully divided vehicle usage modes, a significant reduction in vehicle energy consumption is achieved, while ensuring the safety of vehicle functions.

[0053] Please refer to Figure 1 As shown, in an exemplary embodiment of the present application, the headlight sleep control system includes a central domain controller 400, an exterior light relay module 200, and an exterior light control module 300. The central domain controller 400 is configured to send relay signals to the exterior light relay module 200 and the exterior light control module 300, and send network management messages and application messages to the exterior light control module 300. The exterior light relay module 200 is configured to respond to the relay signals sent by the central domain controller 400 to perform the closing or opening operation of the relay. The exterior light control module 300 is configured to perform passive sleep according to the relay signals sent by the central domain controller 400 or perform active sleep according to the network management messages and application messages sent by the central domain controller 400.

[0054] It should be noted that the exterior light relay module 200 includes a first exterior light relay and a second exterior light relay. Among them, one end of the first exterior light relay is connected to a first power supply, and the other end is connected to the exterior light control module. One end of the second exterior light relay is connected to a second power supply, and the other end is connected to the exterior light control module.

[0055] Specifically, please refer to Figure 2As shown in the figure, the headlight sleep control system is composed of a CDM control module, an HCML left headlight control module, an HCMR right headlight control module, an FCCM front through lamp control module, a GCM front grille lamp control module, an RLM roof lamp control module, an external lamp relay 1 and an external lamp relay 2. Among them, the CDM control module is the central domain controller 400 (central domain control, CDM), and the left headlight control module (Headlight Control ModuleLeft, HCML), the right headlight control module (Headlight Control Module Right, HCMR), the front through lamp control module (Front Cross Lamp Control Module, FCCM), the front grille lamp control module (GrilleLamp Control Module, GCM) and the roof lamp control module (Rack lamp control module, RLM) together constitute the external lamp control module 300, and the external lamp relay 1 and the external lamp relay 2 together constitute the external lamp relay module 200. It should be noted that the external lamp relay 1 is the first external lamp relay, the external lamp relay 2 is the second external lamp relay, the power supply 1 is the first power supply, and the power supply 2 is the second power supply.

[0056] It should be noted that in this embodiment, the components of the headlight sleep control system are divided into A / M members and M members, that is, the CDM control module (A / M member), the HCML left headlight control module (M member 1), the HCMR right headlight control module (M member 2), the FCCM front through lamp control module (M member 3), the GCM front grille lamp control module (M member 4), and the RLM roof lamp control module (M member 5). Among them, the A / M member can wake up other members in the system and can also be woken up by other members in the system, while the M member can only be woken up by other members. Since there are only A / M members and M members in the system, the system is controlled by the CDM control module (A / M member) to put other M members to sleep or wake them up. It should be noted that in this embodiment, the external lamp control module in the headlight sleep control system only includes 5 M members. Of course, in other embodiments, the number of M members included in the external lamp control module can be increased or decreased.

[0057] In an exemplary embodiment of the present application, the relay signals, network management messages and application messages sent by the central domain controller in different vehicle usage modes are different, where the vehicle usage modes include abandon mode, inactive mode, convenience mode, active mode and driving mode.

[0058] Specifically, in this embodiment, the usage mode of the vehicle is carefully divided into five usage modes: abandon mode, inactive mode, convenience mode, active mode, and driving mode. Among them, the conditions for entering the abandon mode from the inactive mode are as follows: If no function of the vehicle is turned on and there is no function request after a certain period of time, the vehicle will enter the abandon mode. The conditions for entering the inactive mode from the abandon mode are as follows: After receiving a specified function request, the vehicle will enter the inactive mode. For example, when the vehicle receives an unlock instruction or detects that the key is nearby. The conditions for entering the inactive mode from the convenience mode are as follows: All four doors of the vehicle are closed, there is no occupancy in the vehicle, and the comfort mode is turned off; or after a 30-minute delay, there is no occupancy in the vehicle, and the comfort mode is turned off; or the comfort mode is turned on, and the state of charge (SOC) of the high-voltage battery of the battery electric vehicle (BEV) is lower than 20%; or click the power-off soft switch on the center control screen; or the SOC of the BEV high-voltage energy is lower than 5%; or the vehicle is stationary, the vehicle is in the P gear, the comfort mode is turned off, and there is an external request to lock the vehicle; or the comfort mode is turned on for an excessive time. The conditions for entering the inactive mode from the active mode are as follows: The vehicle speed is less than 5 km / h, or click the power soft switch on the center control screen, or there is an external request to lock the vehicle. The conditions for entering the inactive mode from the driving mode are as follows: The vehicle is stationary, the vehicle is in the P gear, and click the power soft switch on the center control screen to turn off the power; or the intelligent driving function shuts down. The conditions for entering the convenience mode from the inactive mode are as follows: Any one of the four doors of the vehicle is opened; or the brake pedal is depressed; or click the large screen again within 30 seconds after the power is turned off. The conditions for entering the convenience mode from the active mode are as follows: The vehicle speed is less than 5 km / h, and the hazard warning light switch is long-pressed for more than 7 s. The conditions for entering the convenience mode from the driving mode are as follows: The vehicle is stationary, switch to the P gear, and open the driver's side door of the intelligent driving; or the vehicle speed is less than 5 km / h, and connect the DC or AC charging gun; or long-press the P gear for greater than or equal to 5 s, and the vehicle speed is less than 15 km / h; or there is no occupancy in the driver's seat, the driver's seat belt is not fastened, and the non-driver's side door is opened. The conditions for entering the active mode from the inactive mode are as follows: The legal key is in the vehicle, the vehicle speed is less than 5 km / h, and the hazard warning light switch is long-pressed for greater than or equal to 7 s. The conditions for entering the active mode from the convenience mode are as follows: The legal key is in the vehicle, the vehicle speed is less than 5 km / h, and the hazard warning light switch is long-pressed for greater than or equal to 7 s. The conditions for entering the active mode from the driving mode are as follows: The power system exits the operating state.Conditions for entering the driving mode from the inactive mode: The intelligent driving function is activated or the power system is activated. Conditions for entering the driving mode from the convenience mode: The power system is activated. Conditions for entering the driving mode from the active mode: The power system is activated. It should be noted that the above division of vehicle usage modes is based on the specific scenario of this embodiment. Of course, in other embodiments, there may be some differences in the specific division of vehicle usage modes.

[0059] In an exemplary embodiment of the present application, when the vehicle usage mode is the inactive mode or the convenience mode, the central domain controller controls the first external lamp relay to close and the second external lamp relay to open. If no lighting function is requested or activated within the preset time, the central domain controller controls the first external lamp relay to open, so that the external lamp control module enters the passive sleep state.

[0060] In an exemplary embodiment of the present application, when the vehicle usage mode is the active mode or the driving mode, the central domain controller controls both the first external lamp relay and the second external lamp relay to close, so that the external lamp control module always remains in the wake-up state.

[0061] Specifically, please continue to refer to Figure 2 As shown, the external lamp relay 1 is the first external lamp relay, the external lamp relay 2 is the second external lamp relay, the power supply 1 is the first power supply, and the power supply 2 is the second power supply.

[0062] In the abandon mode, the CDM first sends the external lamp relay power-off signal ExtrLiRlyPwrDwn == 0x01: true and the external lamp relay safety status signal ExtrLiRlySafe == 0x00: false to each member in the external lamp control module. After each member in the external lamp control module receives the relay signal, it immediately saves the data stored in the Random Access Memory (RAM) and makes preparations to enter the sleep state. After a certain delay in sending the relay signal by the CDM, the CDM cuts off the power supply to each member in the external lamp control module to minimize the consumption of static current.

[0063] In the inactive or convenience mode, the CDM only controls the first external lamp relay to perform functions, while the second external lamp relay remains off. In these two vehicle usage modes, some lighting functions (such as high beams) are restricted, so the energy consumption of the external lamp control module is relatively small. Only one-way power supply is required to meet the demand, and there is no need to enable the two-way power supply function, thus reducing unnecessary energy consumption. At this time, if any lighting function is activated (such as the position lamp is lit), the CDM should keep the first external lamp relay closed and periodically send the external lamp relay power-off signal ExtrLiRlyPwrDwn == 0x00:false and the external lamp relay safety status signal ExtrLiRlySafe == 0x01:true to each member in the external lamp control module. After receiving the relay signal, each member in the external lamp control module will confirm whether the first external lamp relay remains powered on and check whether it is in a safe state. If in the inactive mode and convenience mode, no lighting function is requested or activated for a certain period of time and the vehicle usage mode does not change, the CDM will periodically send the external lamp relay power-off signal ExtrLiRlyPwrDwn == 0x01:true and the external lamp relay safety status signal ExtrLiRlySafe == 0x00:false to each member in the external lamp control module. After receiving the relay signal, each member in the external lamp control module will immediately save the data stored in the RAM and prepare to enter the sleep state. After a certain delay in sending the relay signal by the CDM, the CDM will cut off the power supply to each member in the external lamp control module to minimize the consumption of static current.

[0064] In the active mode or driving mode, the CDM controls the first external lamp relay and the second external lamp relay to be powered simultaneously to ensure that all vehicle functions can be normally turned on and sufficient power supply is guaranteed in these two vehicle usage modes. At this time, the CDM should control the first external lamp relay and the second external lamp relay to be closed and periodically send the external lamp relay power-off signal ExtrLiRlyPwrDwn == 0x00:false and the external lamp relay safety status signal ExtrLiRlySafe == 0x01:true to other members of the external lamp system. After receiving the relay signal, each member in the external lamp control module will confirm whether the first external lamp relay and the second external lamp relay remain powered on and check whether they are in a safe state. In these two vehicle usage modes, whether or not any lighting function is requested or activated, the first external lamp relay and the second external lamp relay should remain closed to continuously supply power to each member in the external lamp control module.

[0065] It should be noted that in the active mode or the driving mode, each member in the external lamp control module diagnoses the two-way power supply. As long as any one of the power supplies is abnormal and a lighting function is activated at this time, the module will immediately feedback the information of the abnormal power supply circuit (such as power line 2) to the CDM through CAN communication. After receiving the power supply abnormal signal sent by any member in the external lamp control module, the CDM will immediately set the status signal of the activated function to error and send this signal to the instrument, and the instrument will then prompt the driver to perform maintenance. It should be noted that please refer to Figure 2 As shown, the vehicle lamp sleep control system adopts two independent power supply circuits, namely power line 1 and power line 2.

[0066] In addition, the CDM not only controls the power supply status of each member in the external lamp control module according to the vehicle usage mode, but also each member in the external lamp control module determines whether to enter the sleep state or start the working state based on the network management message and the application message sent by the CDM.

[0067] The following will elaborate in detail the working process of the external lamp control module determining whether to enter the sleep state according to the network management message and the application message sent by the CDM:

[0068] In an exemplary embodiment of the present application, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message stop being sent after delaying the first preset time, if no lighting function is activated, all the external lamp driving units of the external lamp control module enter the active sleep state. If some lighting functions are activated, the external lamp driving units corresponding to the activated lighting functions remain in the wake state, and the remaining external lamp driving units enter the active sleep state.

[0069] It should be noted that please refer to Figure 2 As shown, in this embodiment, the external lamp driving unit refers to the module in the external lamp control module 300 responsible for controlling different external lamps, such as the HCML left headlamp control module, the HCMR right headlamp control module, the FCCM front through lamp control module, and so on.

[0070] Specifically, please refer to Figure 3As shown, if no lighting function is activated before dormancy, and the relevant PNCs (i.e., partial network clusters) in the network management messages sent by the CDM to each external lamp driving unit in the external lamp control module all transition to the first state, then after each external lamp driving unit receives the PNC transitioning to the first state and after a first preset time, it will no longer receive application messages. At this time, the CDM will stop sending network management messages and application messages. Each external lamp driving unit will enter the pre-dormancy state 3 s after detecting the stop of sending network management messages, and after another 4 s, each external lamp driving unit will completely enter the dormancy state. Please refer to Figure 4 As shown, if some lighting functions are activated before dormancy, and the relevant PNCs in the network management messages sent by the CDM to each external lamp driving unit in the external lamp control module all transition to the first state, then after each external lamp driving unit receives the PNC transitioning to the first state and after a first preset time, it will no longer receive application messages. However, the external lamp driving units corresponding to the activated lighting functions remain in the wake state, and the remaining external lamp driving units will enter the pre-dormancy state 3 s after detecting the stop of sending network management messages, and will completely enter the dormancy state after another 4 s. It should be noted that in this embodiment, the first state is set to 0, and the first preset time is set to 2.95S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the first state and the first preset time may vary.

[0071] In an exemplary embodiment of the present application, if the relevant PNCs in the network management messages sent by the central domain controller to the external lamp control module all transition to the first state, and the network management messages and the application messages are continuously sent, then all the external lamp driving units of the external lamp control module will stop receiving the application messages after a first preset time delay after the PNC transitions to the first state, and all the external lamp driving units of the external lamp control module always remain in the wake state.

[0072] Specifically, please refer to Figure 5As shown, if some lighting functions are activated before dormancy, when the relevant PNCs in the network management messages sent by the CDM to each external lamp drive unit in the external lamp control module all jump to the first state, each external lamp drive unit will stop receiving application messages after receiving the PNC jump to the first state and after a first preset time. The external lamp drive units corresponding to the activated lighting functions will remain in the wake-up state. If the network management messages and application messages continue to be sent afterwards, the remaining external lamp drive units will remain in the wake-up state. If no lighting functions are activated before dormancy, each external lamp drive unit will stop receiving application messages after receiving the PNC jump to the first state and after a first preset time. However, since the network management messages and application messages are continuously sent, each external lamp drive unit will remain in the wake-up state. It should be noted that in this embodiment, the first state is set to 0, and the first preset time is set to 2.95S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the first state and the first preset time may vary.

[0073] In an exemplary embodiment of the present application, when the relevant PNCs in the network management messages sent by the central domain controller to the external lamp control module all jump to the first state, and the network management messages stop being sent after a time greater than the first preset time, while the application messages continue to be sent, all the external lamp drive units of the external lamp control module will stop receiving the application messages after a delay of the first preset time after the PNC jumps to the first state. The external lamp drive units corresponding to the activated lighting functions will remain in the wake-up state, and the remaining external lamp drive units will enter the active dormancy state after a delay of a second preset time after the network management messages stop being sent.

[0074] Specifically, please refer to Figure 6As shown, if some lighting functions are activated before dormancy, after each external lamp drive unit receives that the PNC jumps to the first state and after a first preset time, it will no longer receive application messages. The external lamp drive units corresponding to the activated lighting functions will remain in the wake state, and the remaining external lamp drive units will enter the pre-dormancy state after a second preset time delay after detecting the stop of sending network management messages. After another 4s, the remaining external lamp drive units will completely enter the dormancy state. If no lighting functions are activated before dormancy, after each external lamp drive unit receives that the PNC jumps to the first state and after a first preset time, it will no longer receive application messages. Each external lamp drive unit will enter the pre-dormancy state after a second preset time delay after detecting the stop of sending network management messages. After another 4s, each external lamp drive unit will completely enter the dormancy state. It should be noted that in this embodiment, the first state is set to 0, the first preset time is set to 2.95S, and the second preset time is set to 3S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the first state, the first preset time, and the second preset time may be different.

[0075] In an exemplary embodiment of the present application, when the relevant PNCs in the network management messages sent by the central domain controller to the external lamp control module all jump to the first state, and the network management messages stop being sent within the first preset time while the application messages continue to be sent: all external lamp drive units of the external lamp control module will stop receiving the application messages after a first preset time delay after the PNC jumps to the first state. The external lamp drive units corresponding to the activated lighting functions will remain in the wake state, and the remaining external lamp drive units will enter the active dormancy state after a second preset time delay after stopping receiving the application messages.

[0076] Specifically, please refer to Figure 7As shown, if no lighting function is activated before hibernation, after each external light drive unit receives that the PNC jumps to the first state and after a first preset time, it will no longer receive application messages. After 3s of detecting the stop of sending network management messages, each external light drive unit will enter the pre-hibernation state, and after another 4s, each external light drive unit will completely enter the hibernation state. If some lighting functions are activated before hibernation, after each external light drive unit receives that the PNC jumps to the first state and after a first preset time, it will no longer receive application messages. The external light drive units corresponding to the activated lighting functions remain in the wake state, and the remaining external light drive units will enter the pre-hibernation state after a second preset time delay after stopping receiving application messages, and after another 4s, the remaining external light drive units will completely enter the hibernation state. It should be noted that in this embodiment, the first state is set to 0, the first preset time is set to 2.95S, and the second preset time is set to 3S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the first state, the first preset time, and the second preset time may vary.

[0077] In an exemplary embodiment of the present application, when the relevant PNCs in the network management message sent by the central domain controller to the external light control module are all in the second state, and the network management message stops being sent while the application message continues to be sent: all external light drive units of the external light control module stop receiving the application message after a first preset time delay after the network management message stops being sent. The external light drive units corresponding to the activated lighting functions remain in the wake state, and the remaining external light drive units enter the active hibernation state after a second preset time delay after stopping receiving the application message.

[0078] Specifically, please refer to Figure 8As shown, if no lighting function is activated before hibernation, after the network management message stops being sent and after a first preset time delay, each external lamp driving unit will no longer receive application messages. After a second preset time delay after each external lamp driving unit stops receiving application messages, it will enter a pre-hibernation state. After another 4s, each external lamp driving unit will completely enter the hibernation state. If some lighting functions are activated before hibernation, after a first preset time delay after the network management message stops being sent, each external lamp driving unit will no longer receive application messages. The external lamp driving units corresponding to the activated lighting functions will remain in the wake state, and the remaining external lamp driving units will enter the pre-hibernation state after a second preset time delay after they stop receiving application messages. After another 4s, the remaining external lamp driving units will completely enter the hibernation state. It should be noted that in this embodiment, the second state is set to 1, the first preset time is set to 2.95S, and the second preset time is set to 3S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the second state, the first preset time, and the second preset time may vary.

[0079] In an exemplary embodiment of the present application, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module are all in the second state, and the network management message and the application message stop being sent simultaneously: the external lamp control module is forced to enter the functional safety state, and the external lamp driving units corresponding to the activated lighting functions remain in the wake state.

[0080] Specifically, please refer to Figure 9 As shown, if no lighting function is activated before hibernation, when the external lamp control module detects a sudden loss of the application message, it will be forced to enter the functional safety state and, according to the set logic, force the low beam and position lights to be lit. If some lighting functions are activated before hibernation, the external lamp driving units corresponding to the activated lighting functions remain in the wake state. It should be noted that in this embodiment, the second state is set to 1. Of course, due to different actual application requirements, in other embodiments, the parameter setting of the second state may vary.

[0081] In an exemplary embodiment of the present application, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all change to the first state, and the network management message and the application message stop being sent simultaneously within a third preset time: the external lamp control module is forced to enter the functional safety state, and the external lamp driving units corresponding to the activated lighting functions remain in the wake state.

[0082] Specifically, please refer to Figure 10As shown, if no lighting function is activated before dormancy, the external lamp control module detects a sudden loss of the application message and, according to the set logic, forcibly turns on the low beam and position lamp. If some lighting functions are activated before dormancy, the external lamp drive units corresponding to the activated lighting functions remain in the wake-up state. It should be noted that in this embodiment, the first state is set to 0 and the third preset time is set to 2.45S. Of course, due to different actual application requirements, in other embodiments, the parameter settings of the first state and the third preset time may vary.

[0083] In an exemplary embodiment of the present application, when the relevant PNCs in the network management message sent by the central domain controller to the external lamp control module all jump to the first state, and the network management message and the application message stop being sent simultaneously after a time greater than the third preset time: all the external lamp drive units of the external lamp control module will stop receiving the application message after a delay of the first preset time after the PNC jumps to the first state. The external lamp drive units corresponding to the activated lighting functions remain in the wake-up state, and the remaining external lamp drive units enter the active dormancy state after a delay of the second preset time after stopping receiving the application message.

[0084] Specifically, please refer to Figure 11 As shown, if no lighting function is activated before dormancy, after each external lamp drive unit receives that the PNC jumps to the first state and after the first preset time, it will no longer receive the application message. After each external lamp drive unit stops receiving the application message and after a delay of the second preset time, it will enter the pre-dormancy state. After another 4s, each external lamp drive unit will completely enter the dormancy state. If some lighting functions are activated before dormancy, after each external lamp drive unit receives that the PNC jumps to the first state and after the first preset time, it will no longer receive the application message. The external lamp drive units corresponding to the activated lighting functions will remain in the wake-up state, and the remaining external lamp drive units enter the pre-dormancy state after a delay of the second preset time after stopping receiving the application message. After another 4s, the remaining external lamp drive units will completely enter the dormancy state.

[0085] In summary, a headlight sleep control system provided by the present invention includes a central domain controller, an external light relay module, and an external light control module. The central domain controller is configured to send relay signals to the external light relay module and the external light control module, and send network management messages and application messages to the external light control module. The external light relay module is configured to respond to the relay signals sent by the central domain controller to perform the closing or opening operation of the relay. The external light control module is configured to perform passive sleep according to the relay signals sent by the central domain controller or perform active sleep according to the network management messages and application messages sent by the central domain controller. The power supply mechanism of the system is realized by the central domain controller controlling the external light relay module. The diagnosis of the power supply state depends on the external light control module detecting the contact end of the external light relay and feeding back the diagnosis result to the central domain controller through the CAN message signal, thereby solving the problem that the central domain controller cannot directly diagnose the actual power supply state of the external light control module. In addition, the system is subdivided into abandon mode, inactive mode, convenience mode, active mode, and driving mode according to the usage state of the vehicle, and different sleep strategies are formulated for each mode to achieve classified control and maximize the power saving effect. The external light control module has two sleep mechanisms: active sleep and passive sleep. These two sleep mechanisms complement each other. Even if some control modules of the system fail, it can ensure that the external light control module still has a way to try to enter the sleep state, thus avoiding resource waste. At the same time, the system fully considers the functional safety requirements. When the network management message indicates that the sleep condition is met, if the application message shows that the functional safety requirements are not met, the external light control module will not enter the sleep state and will forcibly activate the corresponding lighting function to ensure driving safety. In addition, if a control module of the system has activated some lighting functions, even if the network management message indicates that the sleep condition is met at this time, the control module will maintain the activated lighting functions to meet the specific requests of the driver.

[0086] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A vehicle light sleep control system, characterized in that: include: Central domain controller, exterior light relay module and exterior light control module; The central domain controller is used to send relay signals to the exterior light relay module and the exterior light control module, and to send network management messages and application messages to the exterior light control module; The exterior lamp relay module is used to respond to the relay signal sent by the central domain controller to perform a relay closing or opening operation; The exterior light control module is used to perform passive sleep according to the relay signal sent by the central domain controller or to perform active sleep according to the network management message and application message sent by the central domain controller.

2. The vehicle light sleep control system according to claim 1, characterized in that: The central domain controller sends different relay signals, network management messages and application messages in different vehicle usage modes, wherein the vehicle usage modes include abandon mode, inactive mode, convenience mode, active mode and driving mode.

3. The vehicle light sleep control system according to claim 1, characterized in that: The exterior light relay module includes a first exterior light relay and a second exterior light relay, wherein one end of the first exterior light relay is connected to a first power supply and the other end is connected to the exterior light control module, and one end of the second exterior light relay is connected to a second power supply and the other end is connected to the exterior light control module.

4. The vehicle light sleep control system according to claim 3, characterized in that: When the vehicle usage mode is inactive mode or convenience mode, the central domain controller controls the first exterior light relay to close and the second exterior light relay to disconnect. If no lighting function is requested or activated within a preset time, the central domain controller controls the first exterior light relay to disconnect, so that the exterior light control module enters a passive sleep state.

5. The vehicle light sleep control system according to claim 3, characterized in that: When the vehicle usage mode is the active mode or the driving mode, the central domain controller controls the first exterior light relay and the second exterior light relay to be closed, so that the exterior light control module always remains in an awake state.

6. The vehicle light sleep control system according to claim 1, characterized in that: When all the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module change to the first state, and the network management message and the application message stop sending after a first preset delay time: If no lighting function is activated, all exterior light driving units of the exterior light control module enter an active sleep state; If some of the lighting functions are activated, the external light driving units corresponding to the activated lighting functions remain in an awake state, and the remaining external light driving units enter an active sleep state.

7. The vehicle light sleep control system according to claim 1, characterized in that: If the relevant PNCs in the network management message sent by the central domain controller to the external light control module all jump to the first state, and the network management message and the application message are continuously sent, then all the external light driving units of the external light control module will delay for a first preset time after the PNC jumps to the first state and then stop receiving the application message, and all the external light driving units of the external light control module always remain in the awake state.

8. The vehicle light sleep control system according to claim 1, characterized in that: When all the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module change to the first state, and the network management message stops sending after a first preset time, while the application message continues to be sent: All external light driving units of the external light control module will delay for a first preset time and then stop receiving the application message after the PNC jumps to the first state. The external light driving units corresponding to the activated lighting functions remain in the awake state, and the remaining external light driving units will delay for a second preset time and then enter the active sleep state after the network management message stops sending.

9. The vehicle light sleep control system according to claim 1, characterized in that: When all the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module change to the first state, and the network management message stops sending within the first preset time, while the application message continues to be sent: All external light driving units of the external light control module will delay for a first preset time and then stop receiving the application message after the PNC jumps to the first state, the external light driving units corresponding to the activated lighting functions remain in the awake state, and the remaining external light driving units will delay for a second preset time and then enter the active sleep state after stopping receiving the application message.

10. The vehicle light sleep control system according to claim 1, characterized in that: When the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module are all in the second state, and the network management message stops being sent, while the application message continues to be sent: All external light driving units of the external light control module delay a first preset time and then stop receiving the application message after the network management message stops being sent, the external light driving units corresponding to the activated lighting functions remain in an awake state, and the remaining external light driving units delay a second preset time and then enter an active sleep state after stopping receiving the application message.

11. The vehicle light sleep control system according to claim 1, characterized in that: When the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module are all in the second state, and the network management message and the application message stop sending at the same time: The exterior light control module is forced to enter a functional safety state, and the exterior light driving unit corresponding to the activated light function remains in an awake state.

12. The vehicle light sleep control system according to claim 1, characterized in that: When all the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module change to the first state, and the network management message and the application message stop sending at the same time within the third preset time: The exterior light control module is forced to enter a functional safety state, and the exterior light driving unit corresponding to the activated light function remains in an awake state.

13. The vehicle light sleep control system according to claim 1, characterized in that: When the relevant PNCs in the network management message sent by the central domain controller to the exterior light control module all jump to the first state, and the network management message and the application message stop sending at the same time after exceeding the third preset time: All external light driving units of the external light control module will delay for a first preset time and then stop receiving the application message after the PNC jumps to the first state, the external light driving units corresponding to the activated lighting functions remain in the awake state, and the remaining external light driving units will delay for a second preset time and then enter the active sleep state after stopping receiving the application message.

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