A low-power LIN frame wake-up system, method and device

Abstract

The present invention discloses a low-power LIN frame wake-up system, comprising an interconnected control unit and a node chip. The control unit is configured to implement a frame wake-up function. The node chip includes a first-layer wake-up detection unit configured to detect the frame header of a LIN frame to determine whether it is relevant to the node chip after the frame wake-up function of the node chip is activated. The second-layer wake-up detection unit is configured to parse and detect the current LIN frame when it is relevant to the node chip to determine whether to wake up the node chip. Through a two-stage wake-up system, the present invention significantly reduces the operating power consumption of the LIN system and achieves ultra-low node power consumption while ensuring timely response without frame omission.

Description

Technical Field

[0001] The present invention belongs to the field of LIN communication, and in particular relates to a low-power communication method for frame selective awakening, specifically a low-power LIN frame awakening system, method and device. Background Art

[0002] The LIN bus, short for Local Interconnect Network, is a common network communication protocol widely used in automotive systems. In automotive communication networks, the LIN system generally supplements the CAN bus network and is primarily used in applications requiring lower communication speeds, such as smart sensor nodes and automatic window control nodes.

[0003] Since automotive systems are battery-powered, the LIN communication network is best kept in low-power or sleep mode, especially when the car is turned off, to conserve power. However, some scenarios require LIN communication after the car is turned off, so the overall power consumption of LIN during operation is also particularly important.

[0004] Chinese patents or patent applications with application numbers 202310630828.4 (published on April 12, 2024), 202021343753.X (published on March 9, 2021) and 202322726394.6 (published on April 12, 2024) all describe hardware-implemented low-power LIN systems, but they can only ensure low power consumption when the LIN network is in sleep mode. Once activity occurs on the LIN bus, all nodes will wake up, and low power consumption cannot be achieved during operation.

[0005] Chinese patents or patent applications with application numbers 201510922268.5 (published on October 16, 2018) and 202211581561.6 (published on June 23, 2023) describe software-controlled frame wake-up to achieve low-power communication systems. However, these low-power systems rely on periodic wake-up detection, which limits the format and timing of frames, resulting in low wake-up efficiency, frame omissions, and inability to achieve real-time response. Summary of the Invention

[0006] In order to solve the problems existing in the existing low-power LIN communication system and frame wake-up method, the present invention provides a low-power LIN frame wake-up system, method and device. Through two-stage wake-up, the operating power consumption of the LIN system is greatly saved, and while achieving ultra-low power consumption of the node, timely response without missing frames can be achieved.

[0007] According to one aspect of the present invention, a low-power LIN frame wake-up system is provided, comprising a control unit and a node chip connected to each other, wherein the control unit is used to implement a frame wake-up function; the node chip comprises a first-layer wake-up detection unit, which is used to detect a frame header of a LIN frame to determine whether it is related to the node chip after the frame wake-up function of the node chip is activated; and a second-layer wake-up detection unit, which is used to parse and detect the current LIN frame when the current LIN frame is related to the node chip, to determine whether to wake up the node chip.

[0008] The above technical solution addresses the problem that existing low-power LIN communication systems all use hardware switches to control the entire node, which only ensures low power consumption when the communication system is in sleep mode, but cannot achieve low power consumption during normal operation. Through 2-layer detection wake-up, the frame header is parsed to determine whether the frame is related to the node. If so, it will wake up and work, otherwise it will continue to remain in low-power mode to save system power consumption when the LIN network is working.

[0009] The above technical solution addresses the problems that existing frame wake-up is basically software-controlled periodic wake-up detection, with limited data transmission format and time, low wake-up efficiency, easy frame leakage, and inability to respond in real time. LIN frame wake-up is implemented through hardware, is not restricted by communication specifications, and can complete frame ID parsing while maintaining extremely low power consumption, and respond in real time without missing frames.

[0010] As a further technical solution, the control unit includes: a central processing unit for controlling the operation of the system; a LIN application layer for controlling LIN signal processing, configuration, identification and diagnosis; a LIN protocol layer for controlling the frame structure of the LIN signal; a LIN function clock for implementing the clock function and synchronizing with the clock of the second-layer wake-up detection unit; and a communication interface for information interaction with the node chip.

[0011] As a further technical solution, the frame structure of the LIN signal includes a synchronization interval segment, a synchronization segment, an ID segment, a response interval segment, a data segment and a checksum segment, wherein the synchronization interval segment, the synchronization segment and the ID segment together constitute a frame header, the data segment and the checksum segment together constitute a response, and the response interval segment is the response time.

[0012] As a further technical solution, the node chip further includes: a LIN physical layer for controlling voltage conversion of the LIN communication physical layer interface; and an LDO for powering the control unit and the node chip.

[0013] According to one aspect of the present invention, a low-power LIN frame wake-up method is provided, comprising:

[0014] When the system is in low power mode, the first layer wake-up detection unit remains on;

[0015] The first layer wake-up detection unit detects the transmitted LIN frame and triggers the second layer wake-up detection unit to work when it detects a dominant level that exceeds the filtering time;

[0016] After the second-layer wake-up detection unit performs clock synchronization, it parses the ID bit of the LIN frame and wakes up the node chip when the parsing is successful.

[0017] As a further technical solution, the method also includes: configuring the frame structure of the LIN signal to include a synchronization interval segment, a synchronization segment, an ID segment, a response interval segment, a data segment and a checksum segment, wherein the synchronization interval segment, the synchronization segment, and the ID segment together constitute a frame header, the data segment and the checksum segment together constitute a response, and the response interval segment is the response time.

[0018] As a further technical solution, after the parsing is successful, the method further includes: each module of the node chip starts and completes within the response interval, and sends a data segment and a checksum segment to complete the node chip response.

[0019] As a further technical solution, the method further includes: configuring a value of a frame wake-up ID to activate or deactivate a frame wake-up function of the node chip.

[0020] As a further technical solution, when activating the frame wake-up function of the node chip, it also includes:

[0021] When the LIN node is a single-line LIN Phy, manually configure the frame wake-up ID of the current node through the control unit;

[0022] When the LIN node is a two-wire LIN Phy with automatic addressing function, the control unit automatically performs LIN automatic addressing and automatically generates a frame wake-up ID when the addressing is successful.

[0023] According to one aspect of the present invention, a low-power LIN frame wake-up device is provided, comprising a memory and a processor, wherein the memory stores program instructions executed by the processor, and the processor calls the program instructions to execute the steps of the low-power LIN frame wake-up method.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The frame wake-up function of the present invention is a two-stage wake-up, which is mainly implemented by an independent low-power hardware circuit. It supports baud rate adaptive deframing, achieves ultra-low power consumption of the node, can respond to frame wake-up in time, does not miss frames, and the wake-up process does not violate the LIN protocol layer consistency requirements.

[0026] 2. The frame wake-up function of the present invention can be freely configured to be turned on and off; when turned on, it supports 8-bit frame ID deframing. The frame ID can be flexibly configured manually using the MCU, or it can be automatically configured in conjunction with the LIN automatic addressing function, simplifying the installation process and making it less prone to errors.

[0027] 3. The frame wake-up system of this invention significantly reduces the operating power consumption of the LIN system. When the LIN system is operating, each node can selectively wake up and sleep according to application requirements, rather than maintaining all nodes in an active state and wasting energy. Furthermore, this frame wake-up system complies with the physical and protocol layer conformance requirements of LIN 2.1 and is compatible with other LIN nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A topological diagram of a LIN frame wake-up system provided in an embodiment of the present invention.

[0029] Figure 2 A schematic diagram of the frame wake-up ID configuration provided by an embodiment of the present invention.

[0030] Figure 3 A schematic diagram of the basic structure of a LIN frame in accordance with the LIN2.1 protocol layer specification provided in an embodiment of the present invention.

[0031] Figure 4 A schematic diagram of the frame wake-up process provided by an embodiment of the present invention.

[0032] Figure 5 A schematic diagram of the frame parsing function provided by an embodiment of the present invention.

[0033] In the picture:

[0034] MCU: Micro-controller Unit, micro control unit;

[0035] SBC: System Basis Chip, system basic chip, generally includes power supply, communication interface chip, etc.;

[0036] Core: refers to the MCU core or central processing unit, which runs application code and controls the operation of the entire system;

[0037] LIN application layer: controls the four functions of LIN signal processing, configuration, identification and diagnosis. Operations such as identification and processing of normal ID and frame wake-up ID are defined here.

[0038] LIN protocol layer: controls the frame structure of the LIN signal. The frame wake-up function described in the present invention complies with the LIN frame structure and meets the LIN2.1 consistency requirements.

[0039] Clock: MCU internal functional clock, supports LIN baud rate adaptation, and can implement LIN communication clock calibration through Clock2;

[0040] UART: MCU's UART communication interface, compatible with LIN communication logic;

[0041] POWER: The power supply unit of the MCU, which is powered by the LDO of the SBC;

[0042] Monitor1 & Clock1: First-level wake-up detection, normally open. Monitor1 is edge-triggered detection with filtering, and filtering is implemented by Clock1.

[0043] Monitor2 & Clock2: Layer 2 wake-up detection, triggered by Layer 1 wake-up detection. Monitor2 performs 8-bit frame parsing detection, and the functional clock is implemented by Clock2.

[0044] LIN Phy: controls the voltage conversion of the LIN communication physical layer interface. The frame wake-up function described in the present invention is compatible with the LIN2.1 physical layer consistency requirements and also supports LIN baud rate adaptation and LIN automatic addressing functions.

[0045] LDO: Linear regulated power supply, converting the power supply voltage into a stable logic voltage to power the SBC and MCU;

[0046] BAT: Chip power supply, connected to the positive terminal of the battery;

[0047] GND: Chip ground, connected to the negative terminal of the battery;

[0048] LIN: LIN communication. The figure shows a typical single-line LIN. For dual-line LIN that supports LIN automatic addressing, it is divided into two pins: LIN input and LIN output. The technology described in this invention supports both.

[0049] VDD: MCU power supply, connected to the voltage output pin of LDO;

[0050] TX / RX: logic signal transmission and reception, conversion between high-voltage LIN signals and LIN Phy;

[0051] ID: MCU is used to control the communication signal of SBC frame wake-up ID;

[0052] Clk: Output by Clock2, used for synchronization with the MCU LIN function clock;

[0053] Cycle: records the synchronization information of LIN communication baud rate and Clock2, which is used for synchronization with the MCU functional clock. DETAILED DESCRIPTION

[0054] Traditional LIN systems can only operate with all nodes working together or in hibernation. Not all nodes need to participate in a LIN bus operation. Assuming two to three nodes participate in each communication, a LIN system can have a maximum of 16 nodes. This results in 80% of the nodes being unnecessarily active, wasting system power.

[0055] To this end, the present invention proposes a LIN frame wake-up system and wake-up method. For nodes with frame wake-up function, the system wakes up through layer 2 detection, parses the frame header, and determines whether the frame is related to the node. If so, the system wakes up; otherwise, it will continue to maintain low power consumption mode to save system power consumption when the LIN network is working.

[0056] The existing frame wake-up technologies are all implemented by software-controlled periodic wake-up detection. Although they can achieve low average power consumption over a large period, they are easily restricted by communication specifications and are prone to frame leakage.

[0057] To this end, the LIN frame wake-up function provided by this invention is primarily implemented in hardware. It can resolve frame IDs while maintaining extremely low power consumption, providing real-time response without missing frames. Furthermore, the wake-up process complies with the physical and protocol layer conformance requirements of LIN 2.1, making it compatible with any existing LIN communication system.

[0058] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0059] An embodiment of the present invention provides a low-power LIN frame wake-up system, comprising a control unit and a node chip connected to each other.

[0060] The control unit includes: a central processing unit for controlling the operation of the system; a LIN application layer for controlling LIN signal processing, configuration, identification and diagnosis; a LIN protocol layer for controlling the frame structure of the LIN signal; a LIN function clock for implementing the clock function and synchronizing with the clock of the second-layer wake-up detection unit; and a communication interface for information exchange with the node chip.

[0061] The node chip includes: a first-layer wake-up detection unit, which is used to detect the frame header of the LIN frame to determine whether it is related to the node chip after the frame wake-up function of the node chip is activated; a second-layer wake-up detection unit, which is used to parse and detect the current LIN frame when the current LIN frame is related to the node chip to determine whether to wake up the node chip; a LIN physical layer, which is used to control the voltage conversion of the LIN communication physical layer interface; and an LDO, which is used to power the control unit and the node chip.

[0062] See also Figure 1 The frame wakeup system is primarily composed of an MCU and an SBC. During LIN frame transmission, nodes that support LIN frame wakeup can parse the frame header to determine whether the frame is relevant to the node. If so, the node wakes up, while unrelated nodes remain in low-power mode to save system power.

[0063] The state before the chip wakes up is called low-power mode, which is divided into sleep mode and standby mode. In sleep mode, the chip turns off the MCU, LDO, and LIN Phy, so the wake-up process is longer, about 1ms, but the power consumption can be reduced to around 10uA, which is suitable for scenarios with high power requirements and slow response speed. In standby mode, the chip only turns off LIN Phy and keeps the LDO on, but this puts the MCU in the lowest power mode. The system power consumption is slightly higher, about 40uA, but the wake-up time is short, which is suitable for scenarios with fast response speed.

[0064] See also Figure 2 , which provides the configuration process of the frame wake-up ID. Users can configure the frame wake-up ID according to their needs.

[0065] If the user does not need the frame wake-up function, set the frame wake-up ID to the initial value. At this time, Monitor2 and Clock2 are in the bypass state, that is, the frame wake-up function is disabled. In this case, when Monitor1 detects a dominant signal on the LIN bus that exceeds the filtering time, the SBC and MCU can wake up and start normally.

[0066] When the user requires the frame wake-up function, the initial value of the frame wake-up ID can be changed to activate the function. The initial value of the frame wake-up ID can be changed in two situations. When the LIN node is a classic single-line LIN Phy, the user can manually configure the frame wake-up ID of the current node through the MCU. However, when the LIN node is a dual-line LIN Phy with automatic addressing, the user does not need to manually configure the frame wake-up ID. The MCU automatically performs LIN automatic addressing and automatically generates a frame ID when addressing is successful. Therefore, the combination of frame wake-up technology and automatic addressing makes the installation process simpler and less prone to errors.

[0067] Once the frame wakeup ID configuration is complete, Monitor2 will take effect. LIN wakeup requires two phases: edge wakeup and frame wakeup, to successfully wake up other system modules. If you need to change the frame wakeup ID, you must first initialize the ID to unlock it, and then configure the ID. LIN nodes with automatic addressing can complete this operation automatically, but LIN nodes without automatic addressing must manually cooperate with the MCU to perform this operation.

[0068] It should be noted that the frame wake-up function described in the present invention complies with the protocol layer consistency requirements of LIN2.1 and is compatible with any current LIN bus system.

[0069] See also Figure 3 The LIN 2.1 protocol layer specification defines the basic structure of a LIN frame, consisting of a synchronization interval, a synchronization segment, an ID segment, an acknowledgement interval, a data segment, and a checksum segment. The synchronization interval, synchronization segment, and ID segment together form the frame header, the data segment and checksum segment together form the acknowledgement, and the acknowledgement interval is the response time. Protocol layer conformance requires that this time be no greater than 40% of the frame time (header + acknowledgement + acknowledgement interval). At the highest transmission rate specified in the conformance specification, one bit is 50µs, and one segment is equal to one start bit, eight bits, and one stop bit. The header plus acknowledgement must contain at least 12 segments. Therefore, the frame duration must be greater than (50µs * 12 * 10) / 0.6 = 10ms. In other words, if the acknowledgement interval is less than 10ms * 0.4 = 4ms, any communication rate that meets the conformance requirements will not violate them.

[0070] See also Figure 4 , which gives the frame wake-up process. When the frame wake-up function is turned on, the chip performs frame parsing as follows:

[0071] Step 1. The chip is in low power mode, and Monitor1 and Clock1 remain on.

[0072] Step 2. During the synchronization interval, Monitor1 detects a dominant level that exceeds the filtering time and wakes up Monitor2 and Clock2.

[0073] Step 3. Before the synchronization period arrives, Monitor2 and Clock2 have been successfully started and are stable.

[0074] Step 4. During the synchronization segment, Clock2 performs LIN communication rate synchronization for subsequent frame ID resolution and synchronization of the MCU LIN function clock after wake-up.

[0075] Step 5. During the frame ID segment, Monitor 2 performs serial parsing of the frame ID bit. Once it detects that the communication frame ID and the stored frame ID are inconsistent, the parsing fails and the chip immediately ends the parsing and returns to the state of step 1. If they are consistent, the parsing is successful and the other modules of the chip are awakened.

[0076] Step 6. When the parsing is successful, other modules of the chip will start and complete within the response interval and send the data segment and checksum segment.

[0077] Step 7. After the chip completes the response, if it does not receive a low-power command, it maintains the current state, otherwise it enters the state of step 1.

[0078] See also Figure 5 , which gives a schematic diagram of the principle of the frame parsing function. In the figure, IDx represents the stored frame ID, which is locked after configuration by the MCU, and Bitx represents the frame ID captured by LIN communication. The functional clock is provided by Clock2 after clock synchronization, and has the function of LIN baud rate adaptation, which can achieve correct capture and sampling at any baud rate without manual setting. Since the capture is serial, each captured bit will be XORed with the corresponding stored frame ID. The same bit is 0 and the different bit is 1. The bit that has not been compared yet maintains the default output 0, and finally it is inverted through the NOR gate to output a positive logic 1. In the serial 10-bit comparison, if the comparison is inconsistent at a certain stage, the module outputs 0, indicating that the frame wake-up has failed, thereby ending the current parsing behavior and restoring to the state before wake-up.

[0079] Based on the same inventive concept as the above-mentioned system embodiment, an embodiment of the present invention further provides a low-power LIN frame wake-up method, which utilizes a pre-configured wake-up frame structure in combination with two-segment wake-up detection. The wake-up frame structure is pre-configured to include a synchronization interval, a synchronization segment, an ID segment, a response interval, a data segment, and a checksum segment. The synchronization interval, synchronization segment, and ID segment together constitute the frame header, the data segment and checksum segment together constitute the response, and the response interval serves as the response time.

[0080] Specifically, the low-power LIN frame wake-up method implemented based on the low-power LIN frame wake-up system includes the following steps:

[0081] For node chips with the frame wake-up function activated, when the system is in low-power mode, the first-layer wake-up detection unit remains turned on;

[0082] The first layer wake-up detection unit detects the transmitted LIN frame and triggers the second layer wake-up detection unit to work when it detects a dominant level that exceeds the filtering time;

[0083] After the second-layer wake-up detection unit performs clock synchronization, it parses the ID bit of the LIN frame and wakes up the node chip when the parsing is successful.

[0084] After the parsing is successful, each module of the node chip starts and completes within the response interval, and sends a data segment and a checksum segment to complete the node chip response.

[0085] When activating the frame wake-up function of the node chip, it also includes: when the LIN node is a single-line LIN Phy, manually configuring the frame wake-up ID of the current node through the control unit; when the LIN node is a dual-line LIN Phy with automatic addressing function, the control unit automatically performs LIN automatic addressing and automatically generates a frame wake-up ID when the addressing is successful.

[0086] It should be noted that the frame wake-up method provided in the embodiment of the present invention can be implemented using the modules in the system embodiment, and the specific implementation process will not be described in detail here.

[0087] Based on the same inventive concept as the above-mentioned system embodiment, an embodiment of the present invention also provides a low-power LIN frame wake-up device, including a memory and a processor, wherein the memory stores program instructions executed by the processor, and the processor calls the program instructions to execute the steps of the low-power LIN frame wake-up method.

[0088] In summary, the present invention has the following advantages over the prior art:

[0089] 1. This frame wake-up system significantly reduces the operating power consumption of the LIN system. A LIN system can have up to 16 nodes. Not all nodes need to participate in the LIN bus operation; each node can wake up and sleep as needed. If only two to three nodes participate in each communication, and a single node consumes approximately 20mA to 50mA, this frame wake-up system can save approximately 80% of energy, with a maximum power saving of approximately 650mA.

[0090] 2. The frame wake-up function is a two-stage wake-up, mainly implemented by an independent low-power hardware circuit, supporting baud rate adaptive deframing. It can achieve ultra-low power consumption of the node while responding to frame wake-up in time without missing frames. The entire wake-up process does not violate the physical layer and protocol layer consistency requirements of LIN and is also compatible with other traditional LIN nodes.

[0091] 3. The frame wake-up function can be freely configured to be turned on or off. When enabled, it supports 8-bit frame ID deframing. The frame ID can be flexibly configured manually using the MCU, or it can be automatically configured in conjunction with the LIN automatic addressing function, simplifying the installation process and reducing the risk of errors.

[0092] It should be noted that the above embodiments are only examples, and the technical solutions of the various embodiments can be combined and are all within the protection scope of the present invention.

[0093] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A low-power LIN frame wake-up system, characterized in that: It includes a control unit and a node chip connected to each other, wherein the node chip includes a first-layer wake-up detection unit and a second-layer wake-up detection unit; The control unit includes: a central processing unit for controlling the operation of the system; a LIN application layer for controlling LIN signal processing, configuration, identification and diagnosis; a LIN protocol layer for controlling the frame structure of the LIN signal; a LIN function clock for implementing the clock function and synchronizing with the clock of the second layer wake-up detection unit; and a communication interface for exchanging information with the node chip. The frame structure of the LIN signal includes an ID segment. When the frame wake-up function is not needed, the ID segment is set to an initial value to turn off the frame wake-up function, and the value of the ID segment is changed to activate the frame wake-up function. When the node chip activates the frame wake-up function and the system is in low power consumption mode, the first-layer wake-up detection unit remains turned on, detects the transmitted LIN frame, and triggers the second-layer wake-up detection unit to work when a linear level exceeding the filtering time is detected. After the second-layer wake-up detection unit performs clock synchronization, it parses the ID segment of the LIN frame to determine whether it is related to the current node chip. When it is determined that it is related to the current node chip, the node chip is woken up to work.

2. A low-power LIN frame wake-up system according to claim 1, characterized in that: The frame structure of the LIN signal also includes a synchronization interval segment, a synchronization segment, a response interval segment, a data segment and a checksum segment, wherein the synchronization interval segment, the synchronization segment and the ID segment together constitute a frame header, the data segment and the checksum segment together constitute a response, and the response interval segment is the response time.

3. A low-power LIN frame wake-up system according to claim 1, characterized in that: The node chip further comprises: a LIN physical layer for controlling voltage conversion of the LIN communication physical layer interface; and an LDO for supplying power to the control unit and the node chip.

4. A low-power LIN frame wake-up method, characterized in that: The low-power LIN frame wake-up system according to any one of claims 1 to 3 is used for implementation, and the method includes: When the system is in low power mode, the first layer wake-up detection unit remains on; The first layer wake-up detection unit detects the transmitted LIN frame and triggers the second layer wake-up detection unit to work when it detects a dominant level that exceeds the filtering time; After the second-layer wake-up detection unit performs clock synchronization, it parses the ID bit of the LIN frame and wakes up the node chip when the parsing is successful.

5. A low-power LIN frame wake-up method according to claim 4, characterized in that: The method further includes: configuring a frame structure of the LIN signal to include a synchronization interval segment, a synchronization segment, an ID segment, a response interval segment, a data segment, and a checksum segment, wherein the synchronization interval segment, the synchronization segment, and the ID segment together constitute a frame header, the data segment and the checksum segment together constitute a response, and the response interval segment is a response time.

6. A low-power LIN frame wake-up method according to claim 5, characterized in that: After the analysis is successful, the method further includes: each module of the node chip starts and completes within the response interval, and sends a data segment and a checksum segment to complete the node chip response.

7. A low-power LIN frame wake-up method according to claim 4, characterized in that: The method further includes: configuring a value of a frame wake-up ID to activate or deactivate a frame wake-up function of the node chip.

8. A low-power LIN frame wake-up method according to claim 7, characterized in that: When activating the frame wake-up function of the node chip, it also includes: When the LIN node is a single-line LIN Phy, manually configure the frame wake-up ID of the current node through the control unit; When the LIN node is a two-wire LIN Phy with automatic addressing function, the control unit automatically performs LIN automatic addressing and automatically generates a frame wake-up ID when the addressing is successful.

9. A low-power LIN frame wake-up device, characterized in that: The invention comprises a memory and a processor, wherein the memory stores program instructions executed by the processor, and the processor calls the program instructions to execute the steps of the low-power LIN frame wake-up method according to any one of claims 4 to 8.

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