A sleep-wake control method based on multiple CAN communication automobile signal lights

Abstract

The application relates to a sleep-wake control method for a plurality of CAN communication automobile signal lamps, in particular to the technical field of automobile signal lamp control, which comprises the following steps: S1, judging the received signal type according to the power supply signal of a whole vehicle end; S2, judging the state of LED in a lamp according to a private CAN message; S3, when the state judgment result in the step S2 is that the LED in the lamp is in a mute state, judging the sleep of the LED in the lamp according to a sleep signal; S4, when the sleep judgment result in the step S3 is that the LED in the lamp is in a sleep state, judging the wake-up of the LED in the lamp according to the power supply signal of the whole vehicle end and the private CAN message; and S5, when the judgment results in the steps S2 and S4 are that the LED in the lamp is in a wake-up state, judging the mute of the LED in the lamp according to a mute signal. The sleep-wake control method for the plurality of CAN communication automobile signal lamps improves the sleep-wake efficiency of the lamps under the condition that the plurality of lamps work simultaneously.

Description

Technical Field

[0001] This invention relates to the field of automotive signal light control technology, and in particular to a sleep-wake control method for automotive signal lights based on multiple CAN communication. Background Technology

[0002] Automotive lights are a crucial feature showcasing the charm of a car's exterior. With the continuous evolution of automotive lights, their appearance has become increasingly complex, as have their control circuits. The number and types of lights are also gradually increasing. New energy vehicles, powered by batteries, have relatively high requirements for ECU energy consumption, especially static power consumption when the car is parked. Excessive static power consumption can lead to battery depletion after prolonged parking, preventing the car from starting. Stable sleep / wake-up methods for automotive lights can effectively reduce overall vehicle static power consumption. Currently, most methods for reducing automotive light power consumption employ sleep / wake-up. When the car is parked, the automotive electronic controller enters a sleep state, with only the standby circuit working, thus significantly reducing static power consumption. When the car starts, the electronic controller is awakened, and all modules of the controller begin working. As a smart component in modern cars, the static power consumption of lights cannot be ignored. When multiple lights are working simultaneously, signal delays can cause mutual interference between lights, leading to sleep / wake-up failures.

[0003] Chinese Patent Publication No. CN107696962A discloses a vehicle emergency turn signal control system, including a vehicle lighting control module, a battery, an emergency light control switch, multiple normally closed relays, multiple emergency lights, multiple turn signals, a turn signal control switch, and wires. The multiple emergency lights form a first parallel circuit via wires. The emergency light control switch, the multiple normally closed relays, and the first parallel circuit form a first series parallel circuit via wires. The multiple turn signals form a second parallel circuit via wires. The turn signal control switch and the second parallel circuit form a second series parallel circuit via wires. The first series parallel circuit, the second series parallel circuit, the vehicle lighting control module, and the battery form a third series parallel circuit via wires. This solution does not consider the problem of sleep / wake-up failure caused by signal delays and mutual interference between lights when multiple lights are working simultaneously, and therefore fails to improve the sleep / wake-up efficiency of lights operating simultaneously. Summary of the Invention

[0004] To address this issue, the present invention provides a sleep-wake control method for automotive signal lights based on multiple CAN communication systems, thereby overcoming the problem in the prior art where sleep-wake failure occurs due to mutual interference between lights caused by signal delay when multiple lights are working simultaneously.

[0005] To achieve the above objectives, the present invention provides a sleep / wake-up control method for automotive signal lights based on multiple CAN communication systems, comprising:

[0006] Step S1: Receive the power supply signal from the vehicle end and determine the type of the received signal based on the power supply signal from the vehicle end;

[0007] Step S2: When the received signal type is a private CAN message, determine the status of the LED in the lamp according to the private CAN message;

[0008] Step S3: When the state judgment result in step S2 is that the LED in the lamp is in a silent state, perform a sleep judgment on the LED in the lamp according to the sleep signal;

[0009] Step S4: When the sleep determination result in step S3 is that the LED in the lamp is in sleep mode, the LED in the lamp is woken up according to the power supply signal of the whole vehicle and the private CAN message.

[0010] Step S5: When the judgment results of steps S2 and S4 indicate that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal.

[0011] Further, in step S1, the lamp receives the power supply signal from the vehicle via the CAN transceiver module, and determines the type of signal received by the CAN transceiver module based on the power supply signal from the vehicle.

[0012] When the power supply signal at the vehicle end is not turned on, the CAN transceiver module is determined to receive a power supply signal from the vehicle end.

[0013] When the power supply signal at the vehicle end is on, the CAN transceiver module is determined to receive a private CAN message.

[0014] Further, in step S2, when the received signal type is a private CAN message, the state of the LED in the lamp is determined according to the reception status of the private CAN message, wherein:

[0015] When the CAN transceiver module receives a private CAN message, the MCU main control chip determines that the LED in the lamp is in a wake-up state and controls the LED to light up through the driver chip.

[0016] When the CAN transceiver module does not receive a private CAN message, the MCU main control chip determines that the LED in the lamp is in a silent state and controls the LED to enter the silent state through the driver chip.

[0017] Furthermore, in step S3, when it is determined that the LED in the lamp is in a silent state, the MCU main control chip performs a sleep determination on the LED in the lamp, wherein:

[0018] When the CAN transceiver module receives a sleep signal, the MCU main control chip determines that the LED in the lamp is in sleep mode and controls the LED to enter sleep mode through the driver chip.

[0019] When the CAN transceiver module does not receive a sleep signal, the MCU main control chip determines that the LED in the lamp is still in a silent state, and controls the LED to remain in a silent state through the driver chip.

[0020] Furthermore, the sleep signal refers to a signal in which there are no private CAN messages for a continuous duration of T1, and the vehicle power supply signal is not turned on.

[0021] Furthermore, in step S4, when it is determined that the LED in the lamp is in a sleep state, the MCU main control chip performs a wake-up judgment on the LED in the lamp, wherein:

[0022] When the CAN transceiver module does not receive the power supply signal and private CAN message from the vehicle, the MCU main control chip determines that it will not wake up the LEDs in the lights and controls the LEDs to remain in sleep mode through the driver chip.

[0023] When the CAN transceiver module receives the power supply signal from the vehicle and any signal from the private CAN message, the MCU main control chip determines to wake up the LEDs in the lights and controls the LEDs to light up through the driver chip, so that the LEDs in the lights are in the awake state.

[0024] Furthermore, in step S5, when it is determined that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal, wherein:

[0025] When the CAN transceiver module receives a silence signal, the MCU main control chip determines to perform silence control on the LEDs in the lamp and controls the LEDs to enter the silence state through the driver chip.

[0026] When the CAN transceiver module does not receive a silence signal, the MCU main control chip determines that it will not silence the LEDs in the lamp and controls the LEDs to remain awake through the driver chip.

[0027] Furthermore, the silent signal refers to a signal in which there are no private CAN messages for a continuous duration of T2, and the vehicle power supply signal is not turned on.

[0028] Furthermore, the lighting fixture includes a CAN transceiver module, an MCU main control chip, a driver chip, and LEDs.

[0029] Furthermore, the CAN transceiver module is externally connected to the lamp and is used to receive the vehicle-side power supply signal and private CAN messages from the lamp. The MCU main control chip is connected to the CAN transceiver module and is used to process the signals received by the CAN transceiver module and sent to the MCU main control chip. The driver chip is connected to the MCU main control chip and is used to control the LEDs in the lamp according to the signals processed by the MCU main control chip. The LEDs are connected to the driver chip and are used to respond according to the instructions of the driver chip.

[0030] Compared with the prior art, the beneficial effects of this invention are as follows: By receiving the power supply signal from the vehicle and determining the type of received signal based on the power supply signal, the invention enables timely reception of the vehicle's private CAN message after the vehicle is powered on, thereby improving the sleep-wake efficiency of multiple lights operating simultaneously. Furthermore, by determining the state of the LEDs in the lights based on the private CAN message when the received signal type is private, the invention controls the lights according to the vehicle signal, further improving the sleep-wake efficiency of multiple lights operating simultaneously. Finally, by determining the sleep state of the LEDs in the lights based on the sleep signal when the LEDs are in a silent state, the invention ensures that the lights remain in a silent state. The system achieves stable and orderly wake-up during sleep mode, further improving the sleep-wake efficiency of multiple lights operating simultaneously. When an LED in a light is in sleep mode, the system determines whether to wake it up based on the vehicle's power supply signal and private CAN message, thus ensuring orderly wake-up of the lights from sleep mode. Conversely, when an LED in a light is in wake-up mode, the system determines whether to silence it based on a silence signal, avoiding sleep-wake failures caused by signal delays and mutual interference between lights.

[0031] In particular, the CAN transceiver module receives the power supply signal from the vehicle and determines the type of the received signal based on the power supply signal from the vehicle. When the power supply signal from the vehicle is on, the CAN transceiver module receives the private CAN message, thereby receiving the private CAN message from the vehicle after the vehicle is powered on, thus improving the sleep-wake efficiency of the lights when multiple lights are working at the same time.

[0032] In particular, the MCU main control chip determines the state of the LEDs in the lamps. When the CAN transceiver module receives a private CAN message, the MCU main control chip determines that the LEDs in the lamps are in a wake-up state and controls the LEDs to light up through the driver chip. When the CAN transceiver module does not receive a private CAN message, the MCU main control chip determines that the LEDs in the lamps are in a silent state and controls the LEDs to enter a silent state through the driver chip. This allows the lamps to be controlled according to the vehicle signals, thereby improving the sleep-wake efficiency of the lamps when multiple lamps are working simultaneously.

[0033] In particular, the MCU main control chip determines the sleep state of the LEDs in the lamp based on the sleep signal. When the CAN transceiver module receives the sleep signal, the MCU main control chip determines that the LEDs in the lamp are in a sleep state and controls the LEDs to sleep through the driver chip. When the CAN transceiver module does not receive the sleep signal, the MCU main control chip determines that the LEDs in the lamp are still in a silent state and controls the LEDs to remain in a silent state through the driver chip. This ensures that the lamps are stably and orderly woken up when in a silent state, further improving the sleep-wake efficiency of the lamps when multiple lamps are working at the same time.

[0034] In particular, the MCU main control chip determines whether to wake up the LEDs in the lamps based on the power supply signal and private CAN message from the vehicle. When the CAN transceiver module does not receive the power supply signal and private CAN message from the vehicle, the MCU main control chip determines not to wake up the LEDs in the lamps and controls the LEDs to remain in sleep mode through the driver chip. When the CAN transceiver module receives the power supply signal and private CAN message from the vehicle, the MCU main control chip determines to wake up the LEDs in the lamps and controls the LEDs to light up through the driver chip, thus waking up the LEDs in the lamps. This orderly wake-up of the lamps from sleep mode further improves the sleep-wake efficiency of lamps when multiple lamps are working simultaneously. Attached Figure Description

[0035] Figure 1 This is a flowchart illustrating the sleep-wake control method for automotive signal lights based on multiple CAN communication in this embodiment. Detailed Implementation

[0036] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0037] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0038] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Please see Figure 1 The diagram shown is a flowchart illustrating the sleep / wake-up control method for automotive signal lights based on multiple CAN communication in this embodiment. The method includes...

[0040] Step S1: Receive the power supply signal from the vehicle end and determine the type of the received signal based on the power supply signal from the vehicle end;

[0041] Step S2: When the received signal type is a private CAN message, determine the status of the LED in the lamp according to the private CAN message;

[0042] Step S3: When the state judgment result in step S2 is that the LED in the lamp is in a silent state, perform a sleep judgment on the LED in the lamp according to the sleep signal;

[0043] Step S4: When the sleep determination result in step S3 is that the LED in the lamp is in sleep mode, the LED in the lamp is woken up according to the power supply signal of the whole vehicle and the private CAN message.

[0044] Step S5: When the judgment results of steps S2 and S4 indicate that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal.

[0045] Specifically, the states of the LEDs in the lamp include sleep state, wake-up state, and silent state.

[0046] Specifically, by receiving the power supply signal from the vehicle and determining the received signal type based on the vehicle's power supply signal, the system can promptly receive the vehicle's private CAN message after the vehicle is powered on. This improves the sleep / wake-up efficiency of the lights when multiple lights are operating simultaneously. When the received signal type is a private CAN message, the system determines the state of the LEDs in the lights based on the private CAN message, and then controls the lights according to the vehicle signals, further improving the sleep / wake-up efficiency of the lights when multiple lights are operating simultaneously. Furthermore, when the LEDs in the lights are in a silent state, the system performs a sleep detection based on the sleep signal, ensuring stable and orderly operation of the lights in a silent state. This system improves the sleep-wake efficiency of multiple lights operating simultaneously by determining whether an LED in a light is in sleep mode based on the vehicle's power supply signal and private CAN message. This allows for orderly wake-up of the lights from sleep mode, further enhancing the efficiency when multiple lights are working simultaneously. Conversely, when an LED is in wake mode, a silence signal is used to determine whether it is in a silence mode, thus avoiding sleep-wake failures caused by signal delays and mutual interference between lights.

[0047] Specifically, the method of the present invention is applied to a vehicle signal light fixture, which includes a CAN transceiver module, an MCU main control chip, a driver chip, and LEDs. The CAN transceiver module is externally connected to the light fixture and is used to receive the vehicle's power supply signal and private CAN messages from the outside of the light fixture. The MCU main control chip is connected to the CAN transceiver module and is used to process the signals received by the CAN transceiver module and sent to the MCU main control chip. The driver chip is connected to the MCU main control chip and is used to control the LEDs in the light fixture according to the signals processed by the MCU main control chip. The LEDs are connected to the driver chip and are used to respond according to the instructions of the driver chip.

[0048] Specifically, CAN refers to Vehicle Control Domain Local Area Network Bus technology, a communication protocol in automobiles. CAN is equivalent to the central nervous system of a car. The CAN transceiver module refers to the transceiver module of the CAN communication protocol. The private CAN message refers to the hexadecimal private message received by the ECU and CAN card on the CAN line, where the frame of data transmitted from the transmitting unit to the receiving unit in the car is sent. The ECU refers to Electronic Control Unit, and the MCU refers to Microcontroller Unit, which is a chip-level computer. The MCU master control chip refers to the master control chip of the microcontroller unit. The vehicle power supply signal refers to the power-on signal of the car.

[0049] Specifically, the lamp is connected to the battery and has power input both when the vehicle is in operation and when it is not in operation.

[0050] Specifically, in step S1, the lamp receives the power supply signal from the vehicle via the CAN transceiver module, and determines the type of signal received by the CAN transceiver module based on the power supply signal from the vehicle.

[0051] When the power supply signal at the vehicle end is not turned on, the CAN transceiver module is determined to receive a power supply signal from the vehicle end.

[0052] When the power supply signal at the vehicle end is on, the CAN transceiver module is determined to receive a private CAN message.

[0053] Specifically, the CAN transceiver module receives the power supply signal from the vehicle and determines the type of the received signal based on the power supply signal from the vehicle. When the power supply signal from the vehicle is on, the CAN transceiver module receives the private CAN message, thereby receiving the private CAN message from the vehicle after the vehicle is powered on, thus improving the sleep-wake efficiency of the lights when multiple lights are working at the same time.

[0054] Specifically, in step S2, when the received signal type is a private CAN message, the state of the LED in the lamp is determined based on the reception status of the private CAN message, wherein:

[0055] When the CAN transceiver module receives a private CAN message, the MCU main control chip determines that the LED in the lamp is in a wake-up state and controls the LED to light up through the driver chip.

[0056] When the CAN transceiver module does not receive a private CAN message, the MCU main control chip determines that the LED in the lamp is in a silent state and controls the LED to enter the silent state through the driver chip.

[0057] Specifically, the MCU main control chip determines the state of the LEDs in the lamps. When the CAN transceiver module receives a private CAN message, the MCU main control chip determines that the LEDs in the lamps are in a wake-up state and controls the LEDs to light up through the driver chip. When the CAN transceiver module does not receive a private CAN message, the MCU main control chip determines that the LEDs in the lamps are in a silent state and controls the LEDs to enter a silent state through the driver chip. This allows the lamps to be controlled according to the vehicle signals, thereby improving the sleep-wake efficiency of the lamps when multiple lamps are working simultaneously.

[0058] Specifically, in step S3, when it is determined that the LED in the lamp is in a silent state, the MCU main control chip performs a sleep determination on the LED in the lamp, wherein:

[0059] When the CAN transceiver module receives a sleep signal, the MCU main control chip determines that the LED in the lamp is in sleep mode and controls the LED to enter sleep mode through the driver chip.

[0060] When the CAN transceiver module does not receive a sleep signal, the MCU main control chip determines that the LED in the lamp is still in a silent state, and controls the LED to remain in a silent state through the driver chip.

[0061] Specifically, based on the sleep signal, the MCU main control chip determines whether the LEDs in the lamp are in sleep mode. When the CAN transceiver module receives the sleep signal, the MCU main control chip determines that the LEDs in the lamp are in sleep mode and controls the LEDs to enter sleep mode through the driver chip. When the CAN transceiver module does not receive the sleep signal, the MCU main control chip determines that the LEDs in the lamp are still in silent mode and controls the LEDs to remain in silent mode through the driver chip. This ensures that the lamps are stably and orderly woken up when in silent mode, further improving the sleep-wake efficiency of lamps when multiple lamps are working at the same time.

[0062] Specifically, the sleep signal refers to a signal in which there are no private CAN messages for a continuous duration of T1, and the vehicle power supply signal is not turned on.

[0063] Specifically, in step S4, when it is determined that the LED in the lamp is in a sleep state, the MCU main control chip performs a wake-up judgment on the LED in the lamp, wherein:

[0064] When the CAN transceiver module does not receive the power supply signal and private CAN message from the vehicle, the MCU main control chip determines that it will not wake up the LEDs in the lights and controls the LEDs to remain in sleep mode through the driver chip.

[0065] When the CAN transceiver module receives the power supply signal from the vehicle and any signal from the private CAN message, the MCU main control chip determines to wake up the LEDs in the lights and controls the LEDs to light up through the driver chip, so that the LEDs in the lights are in the awake state.

[0066] Specifically, based on the power supply signal and private CAN message from the vehicle, the MCU main control chip determines whether to wake up the LEDs in the lamps. When the CAN transceiver module does not receive the power supply signal and private CAN message from the vehicle, the MCU main control chip determines not to wake up the LEDs in the lamps and controls the LEDs to remain in sleep mode through the driver chip. When the CAN transceiver module receives the power supply signal and private CAN message from the vehicle, the MCU main control chip determines to wake up the LEDs in the lamps and controls the LEDs to light up through the driver chip, thus waking up the LEDs in the lamps. This orderly wake-up of the lamps from sleep mode further improves the sleep-wake efficiency of lamps when multiple lamps are working simultaneously.

[0067] Specifically, in step S5, when it is determined that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal, wherein:

[0068] When the CAN transceiver module receives a silence signal, the MCU main control chip determines to perform silence control on the LEDs in the lamp and controls the LEDs to enter the silence state through the driver chip.

[0069] When the CAN transceiver module does not receive a silence signal, the MCU main control chip determines that it will not silence the LEDs in the lamp and controls the LEDs to remain awake through the driver chip.

[0070] Specifically, the silent signal refers to a signal in which there are no private CAN messages for a continuous duration of T2, and the vehicle power supply signal is not turned on.

[0071] Specifically, T1 is the first preset time, T2 is the second preset time, and T2 < T1. This embodiment does not specifically limit the values ​​of T1 as the first preset time and T2 as the second preset time. Those skilled in the art can freely set them according to actual needs, as long as the control requirements for the silent state are met, such as setting T1 = 3s and T2 = 2s.

[0072] Specifically, by setting the first preset time T1 to be greater than the second preset time T2, it is ensured that the lamps will not wake each other up under the same private CAN, thus guaranteeing the stable execution of the sleep-wake mechanism and further improving the sleep-wake efficiency of the lamps when multiple lamps are working at the same time.

[0073] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A sleep / wake-up control method for automotive signal lights based on multiple CAN communication modules, wherein the automotive signal light fixture includes a CAN transceiver module, an MCU main control chip, a driver chip, and an LED; the CAN transceiver module is externally connected to the light fixture; the MCU main control chip is connected to the CAN transceiver module; the driver chip is connected to the MCU main control chip; and the LED is connected to the driver chip; characterized in that... include: Step S1: Receive the power supply signal from the vehicle end and determine the type of the received signal based on the power supply signal from the vehicle end; Step S2: When the received signal type is a private CAN message, determine the status of the LED in the lamp according to the private CAN message; Step S3: When the state judgment result in step S2 is that the LED in the lamp is in a silent state, perform a sleep judgment on the LED in the lamp according to the sleep signal; Step S4: When the sleep determination result in step S3 is that the LED in the lamp is in sleep mode, the LED in the lamp is woken up according to the power supply signal of the whole vehicle and the private CAN message. Step S5: When the judgment results of steps S2 and S4 indicate that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal. In step S1, the lamp receives the power supply signal from the vehicle via the CAN transceiver module, and determines the type of signal received by the CAN transceiver module based on the power supply signal from the vehicle. When the power supply signal at the vehicle end is not turned on, the CAN transceiver module is determined to receive a power supply signal from the vehicle end. When the power supply signal at the vehicle end is turned on, the type of the received signal of the CAN transceiver module is determined to be a private CAN message; In step S2, when the received signal type is a private CAN message, the state of the LED in the lamp is determined based on the reception status of the private CAN message, wherein: When the CAN transceiver module receives a private CAN message, the MCU main control chip determines that the LED in the lamp is in a wake-up state and controls the LED to light up through the driver chip. When the CAN transceiver module does not receive the private CAN message, the MCU main control chip determines that the LED in the lamp is in a silent state and controls the LED to enter the silent state through the driver chip. In step S3, when it is determined that the LED in the lamp is in a silent state, the MCU main control chip performs a sleep determination on the LED in the lamp, wherein: When the CAN transceiver module receives a sleep signal, the MCU main control chip determines that the LED in the lamp is in sleep mode and controls the LED to enter sleep mode through the driver chip. When the CAN transceiver module does not receive a sleep signal, the MCU main control chip determines that the LED in the lamp is still in a silent state, and controls the LED to remain in a silent state through the driver chip; In step S5, when it is determined that the LED in the lamp is in an awake state, a silence judgment is performed on the LED in the lamp based on the silence signal, wherein: When the CAN transceiver module receives a silence signal, the MCU main control chip determines to perform silence control on the LEDs in the lamp and controls the LEDs to enter the silence state through the driver chip. When the CAN transceiver module does not receive a silence signal, the MCU main control chip determines that it will not perform silence control on the LEDs in the lamp, and controls the LEDs to remain in the wake-up state through the driver chip. The sleep signal refers to a signal in which there are no private CAN messages for a continuous duration of T1 and the vehicle power supply signal is not turned on. The silence signal refers to a signal in which there are no private CAN messages for a continuous duration of T2 and the vehicle power supply signal is not turned on. T1 is a first preset time, T2 is a second preset time, and T2 < T1.

2. The sleep / wake-up control method for automotive signal lights based on multiple CAN communication systems according to claim 1, characterized in that, In step S4, when it is determined that the LED in the lamp is in a sleep state, the MCU main control chip performs a wake-up check on the LED in the lamp, wherein: When the CAN transceiver module does not receive the power supply signal and private CAN message from the vehicle, the MCU main control chip determines that it will not wake up the LEDs in the lights and controls the LEDs to remain in sleep mode through the driver chip. When the CAN transceiver module receives the power supply signal from the vehicle and any signal from the private CAN message, the MCU main control chip determines to wake up the LEDs in the lights and controls the LEDs to light up through the driver chip, so that the LEDs in the lights are in the awake state.

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