Steer-by-wire full-redundancy wake-up system

Abstract

The invention discloses a steer-by-wire full-redundancy wake-up system, which comprises four wake-up systems, namely an upper-to-A-side wake-up system, an upper-to-B-side wake-up system, a lower-to-A-side wake-up system and a lower-to-B-side wake-up system, each wake-up system comprises a CAN (Controller Area Network) transceiving A1 module, a CAN transceiving A2 module, a power management module and an MCU (Microprogrammed Control Unit) main control chip; after the CAN transceiving A1 module receives a vehicle bus network wake-up message, the power management module is awakened by pulling up the level of a wake-up pin; the power management module supplies power to the MCU main control chip after being awakened, and then the whole steer-by-wire full-redundancy awakening system is awakened. According to the method, multiple wake-up sources and wake-up modes are considered, and when any wake-up source fails, multiple redundant wake-up modes are adopted to guarantee system wake-up.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile steering, and in particular to a fully redundant wake-up system for wire-controlled steering. Background Art

[0002] Traditional electric power steering systems maintain a mechanical connection between the steering wheel and the steering wheel. This design has the disadvantage that the ratio between the steering wheel angle and the steering wheel angle, or the steering angle transmission ratio, remains largely constant with vehicle speed, failing to meet the required handling stability at all speeds. This fixed steering ratio fails to eliminate the inherent conflict between light steering and responsive steering, making it difficult to adapt to the demands of handling stability at varying vehicle speeds. However, precisely because of the mechanical connection, even when the electric power steering system lacks motor assistance, the driver can still control the vehicle's steering using the steering wheel.

[0003] The new automotive steer-by-wire (SBW) system structurally breaks the mechanical connection between the steering wheel and the steering wheel, splitting it into two types: upstairs and downstairs. The steering angle and gear ratio are transmitted between the upstairs and downstairs via electrical signals. This advantage is that it is not restricted by mechanical connections, can change with vehicle speed, and offers extremely flexible control, enabling real-time active control of wheel angles. However, this also presents a potential risk. If the downstairs steer fails to wake up, no matter how the upstairs steer is turned, the steering wheel cannot be controlled. Alternatively, if the upstairs steer fails to wake up, the steering angle control command cannot be transmitted to the downstairs steer, and control of the steering wheel remains impossible. Therefore, avoiding the risk of system failure due to a single wake-up source is a technical challenge facing automotive steer-by-wire systems. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a fully redundant wake-up system for wire-controlled steering, including: four wake-up systems, namely, an upper-turn A-side wake-up system, an upper-turn B-side wake-up system, a lower-turn A-side wake-up system, and a lower-turn B-side wake-up system;

[0005] Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip;

[0006] After receiving the vehicle bus network wake-up message, the CAN transceiver A1 module wakes up the power management module by pulling up the level of the wake-up pin; after being awakened, the power management module supplies power to the MCU main control chip, thereby waking up the entire wire control full-redundant wake-up system;

[0007] The CAN transceiver A2 module of the upstream A-side wakeup system is connected to the wakeup pin, and the CAN transceiver A2 module of the upstream B-side wakeup system is connected to the wakeup pin. The wakeup pin of the upstream A-side wakeup system is connected to the wakeup pin of the upstream B-side wakeup system and separated by the K1 switch. The MCU main control chip of the upstream A-side wakeup system and the MCU main control chip of the upstream B-side wakeup system can both control the K1 switch to close, thereby controlling the cross-wakeup of the upstream A-side wakeup system and the upstream B-side wakeup system.

[0008] The CAN transceiver A2 module of the downstream A-side wakeup system is connected to the wakeup pin, and the CAN transceiver A2 module of the downstream B-side wakeup system is connected to the wakeup pin; the wakeup pin of the downstream A-side wakeup system is connected to the wakeup pin of the downstream B-side wakeup system and separated by the K2 switch; the MCU main control chip of the downstream A-side wakeup system and the MCU main control chip of the downstream B-side wakeup system can both control the closure of the K2 switch, thereby controlling the cross-wakeup of the downstream A-side wakeup system and the downstream B-side wakeup system;

[0009] The MCU main control chip of the upper transfer A side wakeup system is connected to the MCU main control chip of the upper transfer B side wakeup system through bus communication; the MCU main control chip of the lower transfer A side wakeup system is connected to the MCU main control chip of the lower transfer B side wakeup system through bus communication;

[0010] The MCU main control chip of the upper-side A wakeup system monitors the power management module of the upper-side A wakeup system and the power management module of the upper-side B wakeup system at the same time; the MCU main control chip of the lower-side A wakeup system monitors the power management module of the lower-side A wakeup system and the power management module of the lower-side B wakeup system at the same time; the MCU main control chip of the upper-side B wakeup system monitors the power management module of the upper-side B wakeup system and the power management module of the upper-side A wakeup system at the same time; the MCU main control chip of the lower-side B wakeup system monitors the power management module of the lower-side B wakeup system and the power management module of the lower-side A wakeup system at the same time;

[0011] The CAN transceiver A2 module of the upper A-side wake-up system is connected to the CAN transceiver A2 module of the lower A-side wake-up system through bus PCAN_A communication; the CAN transceiver A2 module of the upper B-side wake-up system is connected to the CAN transceiver A2 module of the lower B-side wake-up system through bus PCAN_B communication.

[0012] Preferably, the power management module of the A-side wake-up system and the power management module of the B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K3 switch.

[0013] Preferably, the power management module of the downlink A-side wake-up system and the power management module of the downlink B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K4 switch.

[0014] Preferably, the wake-up pin in each of the wake-up systems is connected to the ignition switch signal KL15.

[0015] The present invention also provides a fully redundant wake-up system for wire-controlled steering, comprising: four wake-up systems, namely, an upper-turn A-side wake-up system, an upper-turn B-side wake-up system, a lower-turn A-side wake-up system, and a lower-turn B-side wake-up system;

[0016] Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip;

[0017] After receiving the vehicle bus network wake-up message, the CAN transceiver A1 module wakes up the power management module by pulling up the level of the wake-up pin; after being awakened, the power management module supplies power to the MCU main control chip, thereby waking up the entire wire control full-redundant wake-up system;

[0018] Connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin; connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin;

[0019] The CAN transceiver A2 module of the upper A-side wakeup system is connected to the CAN transceiver A2 module of the lower A-side wakeup system via bus PCAN_A; the CAN transceiver A2 module of the upper B-side wakeup system is connected to the CAN transceiver A2 module of the lower B-side wakeup system via bus PCAN_B; when a vehicle bus network wakeup message appears, if bus PCAN_A does not receive a message for the upper A-side wakeup system or the lower A-side wakeup system, a wakeup message is sent to bus PCAN_A; if bus PCAN_B does not receive a message for the upper B-side wakeup system or the lower B-side wakeup system, a wakeup message is sent to bus PCAN_B;

[0020] The MCU main control chip of the upper-side A wake-up system is connected to the MCU main control chip of the upper-side B wake-up system through bus communication; the MCU main chip of the lower-side A wake-up system is connected to the MCU main control chip of the lower-side B wake-up system through bus communication; the MCU main chip of each wake-up system monitors the power management module corresponding to its own wake-up system.

[0021] The present invention also provides a fully redundant wake-up system for wire-controlled steering, comprising: four wake-up systems, namely, an upper-turn A-side wake-up system, an upper-turn B-side wake-up system, a lower-turn A-side wake-up system, and a lower-turn B-side wake-up system;

[0022] Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip;

[0023] Each power management module in the wake-up system has a wake-up pin, and the wake-up pin is connected to the ignition switch signal KL15;

[0024] The wakeup pin of the A-side wakeup system is connected to the wakeup pin of the B-side wakeup system and separated by the K1 switch. The MCU main control chip of the A-side wakeup system and the MCU main control chip of the B-side wakeup system can both control the K1 switch to close, thereby controlling the cross-wakeup of the A-side wakeup system and the B-side wakeup system.

[0025] The wakeup pin of the downward-transferring A-side wakeup system is connected to the wakeup pin of the downward-transferring B-side wakeup system and separated by the K2 switch. The MCU main control chip of the downward-transferring A-side wakeup system and the MCU main control chip of the downward-transferring B-side wakeup system can both control the closure of the K2 switch to control the cross-wakeup of the downward-transferring A-side wakeup system and the downward-transferring B-side wakeup system.

[0026] The MCU main control chip of the upper transfer A side wakeup system is connected to the MCU main control chip of the upper transfer B side wakeup system through bus communication; the MCU main control chip of the lower transfer A side wakeup system is connected to the MCU main control chip of the lower transfer B side wakeup system through bus communication;

[0027] The MCU main control chip of the upper-side A wakeup system monitors the power management module of the upper-side A wakeup system and the power management module of the upper-side B wakeup system at the same time; the MCU main control chip of the lower-side A wakeup system monitors the power management module of the lower-side A wakeup system and the power management module of the lower-side B wakeup system at the same time; the MCU main control chip of the upper-side B wakeup system monitors the power management module of the upper-side B wakeup system and the power management module of the upper-side A wakeup system at the same time; the MCU main control chip of the lower-side B wakeup system monitors the power management module of the lower-side B wakeup system and the power management module of the lower-side A wakeup system at the same time;

[0028] The CAN transceiver A2 module of the upper A-side wake-up system is connected to the CAN transceiver A2 module of the lower A-side wake-up system through bus PCAN_A communication; the CAN transceiver A2 module of the upper B-side wake-up system is connected to the CAN transceiver A2 module of the lower B-side wake-up system through bus PCAN_B communication.

[0029] Compared with the existing technology, the present invention takes into account multiple wake-up sources and wake-up methods, and adopts multiple types and redundant wake-up sources to wake up the uplink and downlink. Even if a single wake-up source fails, the system can be woken up by the backup wake-up source, thereby ensuring the availability of the system to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0031] Figure 1 This is a schematic diagram of the structure of the fully redundant wake-up system for steer-by-wire according to Example 1;

[0032] Figure 2 This is a schematic diagram of the structure of the fully redundant wake-up system for steer-by-wire according to Example 2;

[0033] Figure 3 This is a structural diagram of the fully redundant wake-up system for wire-controlled steering in Example 3. DETAILED DESCRIPTION

[0034] The following describes the implementation manner of the present invention through specific specific embodiments. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation manners, and the various details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0035] Example 1

[0036] like Figure 1 As shown, this embodiment provides a fully redundant wake-up system for wire-controlled steering, including: four wake-up systems, namely, an upper-turn A-side wake-up system, an upper-turn B-side wake-up system, a lower-turn A-side wake-up system, and a lower-turn B-side wake-up system; each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module, and an MCU main control chip.

[0037] Each wake-up system's CAN transceiver A1 module is connected to the vehicle's CAN bus. For example, the A-side CAN transceiver A1 module is connected to Vehicle CAN_A, and the B-side CAN transceiver A1 module is connected to Vehicle CAN_B. Upon receiving a wake-up message from the vehicle bus network, the CAN transceiver A1 module wakes up the power management module by raising the voltage on its wake-up pin. The power management module is connected to the constant voltage VCC. Once awakened, the power management module supplies power to the MCU, thereby waking up the entire fully redundant, steer-by-wire wake-up system.

[0038] The CAN transceiver A2 module of the upstream A-side wakeup system communicates with the CAN transceiver A2 module of the downstream A-side wakeup system via bus PCAN_A. The CAN transceiver A2 module of the upstream B-side wakeup system communicates with the CAN transceiver A2 module of the downstream B-side wakeup system via bus PCAN_B. For example, if the upstream device wakes up but fails to receive a signal from the downstream device via the private CAN (PCAN), the upstream device will actively send a network wakeup message via PCAN to attempt to wake up the downstream device, thus enabling the upstream device to wake up the downstream device. Similarly, the downstream device can also wake up the upstream device.

[0039] The CAN transceiver A2 module of the upstream A-side wakeup system is connected to the wakeup pin WakePin, and the CAN transceiver A2 module of the upstream B-side wakeup system is connected to the wakeup pin WakePin. The wakeup pin WakePin of the upstream A-side wakeup system is connected to the wakeup pin WakePin of the upstream B-side wakeup system and separated by the K1 switch. The MCU main control chip of the upstream A-side wakeup system and the MCU main control chip of the upstream B-side wakeup system can both control the closure of the K1 switch to control the cross-wakeup of the upstream A-side wakeup system and the upstream B-side wakeup system.

[0040] The CAN transceiver A2 module of the downstream A-side wake-up system is connected to the wake-up pin WakePin, and the CAN transceiver A2 module of the downstream B-side wake-up system is connected to the wake-up pin WakePin; the wake-up pin WakePin of the downstream A-side wake-up system is connected to the wake-up pin WakePin of the downstream B-side wake-up system, and are separated by the K2 switch; the MCU main control chip of the downstream A-side wake-up system and the MCU main control chip of the downstream B-side wake-up system can both control the closure of the K2 switch, thereby controlling the cross-wake-up of the downstream A-side wake-up system and the downstream B-side wake-up system.

[0041] The MCU main control chip of the upper-turn A-side wakeup system is connected to the MCU main control chip of the upper-turn B-side wakeup system through bus communication; the MCU main chip of the lower-turn A-side wakeup system is connected to the MCU main chip of the lower-turn B-side wakeup system through bus communication.

[0042] The MCU main control chip of the upper-side A wake-up system simultaneously monitors the power management module of the upper-side A wake-up system and the power management module of the upper-side B wake-up system; the MCU main control chip of the lower-side A wake-up system simultaneously monitors the power management module of the lower-side A wake-up system and the power management module of the lower-side B wake-up system; the MCU main control chip of the upper-side B wake-up system simultaneously monitors the power management module of the upper-side B wake-up system and the power management module of the upper-side A wake-up system; the MCU main control chip of the lower-side B wake-up system simultaneously monitors the power management module of the lower-side B wake-up system and the power management module of the lower-side A wake-up system.

[0043] Taking the above-mentioned wakeup system as an example, it is divided into two parts: side A and side B. The WakePin pins of sides A and B are hardwired together and separated by the K1 switch. If the wakeup system on either side A or B fails, the MCU on either side A or B can control the K1 switch to close, thereby controlling cross-wakeup. Furthermore, in the above-mentioned system, inter-chip communication exists between the MCUs on sides A and B. The MCU on side A connects to the PwrPin voltage output of the power management module on side B to monitor its output voltage. Similarly, the MCU on side B monitors the voltage output of the power management module on side A. By combining this voltage with the inter-chip communication status, the status of the other side of the redundant system can be determined. For example, if there is no inter-chip communication signal but the monitored voltage is normal, the wakeup system can be determined to be normal, indicating a failure on the MCU side and the wakeup system is unresponsive. However, if there is no inter-chip communication signal and the monitored voltage is also abnormal, the wakeup system must respond and attempt to wake up the other side to ensure the availability of the redundant system.

[0044] To ensure independent power supply for the dual-redundant system, VCC_A and VCC_B for sides A and B are independent power supplies. However, VCC_A and VCC_B are hardwired together and isolated by a switch. If a voltage abnormality occurs on one side, the healthy side can control the switch to restore power to the faulty side.

[0045] That is Figure 1 As shown, the power management module of the upper-side A wake-up system and the power management module of the upper-side B wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by the K3 switch; the power management module of the lower-side A wake-up system and the power management module of the lower-side B wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by the K4 switch.

[0046] In addition, in addition to being connected to two network wake-up sources, the WakePin pin of the redundant wake-up system is also connected to the vehicle's ignition switch signal KL15 wake-up source, which is connected to the WakePin pin through a unidirectional diode to achieve the purpose of redundant wake-up.

[0047] The combination of redundant wakeup and cross-wakeup described above minimizes system malfunctions caused by bus, hardware, and communication issues. This ensures maximum system availability, which is particularly critical in wired control systems. Furthermore, separating the power supply and wakeup source prevents single points of failure that could prevent the entire system from waking up, thereby improving the functional safety of the entire system.

[0048] Example 2

[0049] like Figure 2 As shown, this embodiment provides a fully redundant wake-up system for steer-by-wire that is simpler in structure than that of embodiment 1, including: four wake-up systems, namely, an upper-turn A-side wake-up system, an upper-turn B-side wake-up system, a lower-turn A-side wake-up system, and a lower-turn B-side wake-up system; each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module, and an MCU main control chip;

[0050] After the CAN transceiver A1 module receives the vehicle bus network wake-up message, it wakes up the power management module by raising the level of the wake-up pin; after being awakened, the power management module supplies power to the MCU main control chip, thereby waking up the entire wire-controlled steering fully redundant wake-up system.

[0051] Connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin; connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin;

[0052] The CAN transceiver A2 module of the upper A-side wakeup system is connected to the CAN transceiver A2 module of the lower A-side wakeup system via bus PCAN_A; the CAN transceiver A2 module of the upper B-side wakeup system is connected to the CAN transceiver A2 module of the lower B-side wakeup system via bus PCAN_B; when a vehicle bus network wakeup message appears, if bus PCAN_A does not receive a message for the upper A-side wakeup system or the lower A-side wakeup system, a wakeup message is sent to bus PCAN_A; if bus PCAN_B does not receive a message for the upper B-side wakeup system or the lower B-side wakeup system, a wakeup message is sent to bus PCAN_B;

[0053] The MCU main control chip of the upper-side A wake-up system is connected to the MCU main control chip of the upper-side B wake-up system through bus communication; the MCU main chip of the lower-side A wake-up system is connected to the MCU main control chip of the lower-side B wake-up system through bus communication; the MCU main chip of each wake-up system monitors the power management module corresponding to its own wake-up system.

[0054] The power management modules for the upstream A-side wakeup system and the upstream B-side wakeup system are each powered by independent power supplies, separated by the K3 switch. The power management modules for the downstream A-side wakeup system and the downstream B-side wakeup system are each powered by independent power supplies, separated by the K4 switch.

[0055] Example 3

[0056] This embodiment differs from Embodiments 1 and 2 in that, while both Embodiments 1 and 2 have network wake-up methods, this embodiment uses only the ignition switch signal KL15 as the wake-up method. To ensure the independence of the wake-up sources, the A / B edges of the uplink and downlink are independently wake-up using KL15_A and KL15_B, respectively.

[0057] like Figure 3 As shown, this embodiment provides a fully redundant wake-up system for steer-by-wire, including four wake-up systems: an upper-side A wake-up system, an upper-side B wake-up system, a lower-side A wake-up system, and a lower-side B wake-up system. Each wake-up system includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module, and an MCU main control chip. The power management module in each wake-up system has a wake-up pin connected to the ignition switch signal KL15. The ignition switch signal KL15 is divided into independent KL15_A and KL15_B, with the A side connected to KL15_A and the B side connected to KL15_B.

[0058] Since the wake-up system of this embodiment does not need to use network wake-up, a cheaper CAN transceiver module can be used, which can save some costs.

[0059] The wakeup pin of the A-side wakeup system is connected to the wakeup pin of the B-side wakeup system and separated by the K1 switch. The MCU main control chip of the A-side wakeup system and the MCU main control chip of the B-side wakeup system can both control the K1 switch to close, thereby controlling the cross-wakeup of the A-side wakeup system and the B-side wakeup system.

[0060] The wake-up pin of the downward-transferring A-side wake-up system is connected to the wake-up pin of the downward-transferring B-side wake-up system and is separated by the K2 switch; the MCU main control chip of the downward-transferring A-side wake-up system and the MCU main control chip of the downward-transferring B-side wake-up system can both control the closure of the K2 switch, thereby controlling the cross-wake-up of the downward-transferring A-side wake-up system and the downward-transferring B-side wake-up system.

[0061] The MCUs on both sides A and B can control switches K1 or K2 to implement the cross-wakeup function. When an exception occurs in the wake-up system on side A or B, the MCU on either side A or B can control the K1 or K2 switch to close, attempting to wake up the other side through cross-wakeup.

[0062] The MCU main control chip of the upper transfer A side wakeup system is connected to the MCU main control chip of the upper transfer B side wakeup system through bus communication; the MCU main control chip of the lower transfer A side wakeup system is connected to the MCU main control chip of the lower transfer B side wakeup system through bus communication;

[0063] The MCU main control chip of the upper-side A wakeup system monitors the power management module of the upper-side A wakeup system and the power management module of the upper-side B wakeup system at the same time; the MCU main control chip of the lower-side A wakeup system monitors the power management module of the lower-side A wakeup system and the power management module of the lower-side B wakeup system at the same time; the MCU main control chip of the upper-side B wakeup system monitors the power management module of the upper-side B wakeup system and the power management module of the upper-side A wakeup system at the same time; the MCU main control chip of the lower-side B wakeup system monitors the power management module of the lower-side B wakeup system and the power management module of the lower-side A wakeup system at the same time;

[0064] The CAN transceiver A2 module of the upper A-side wake-up system is connected to the CAN transceiver A2 module of the lower A-side wake-up system through bus PCAN_A communication; the CAN transceiver A2 module of the upper B-side wake-up system is connected to the CAN transceiver A2 module of the lower B-side wake-up system through bus PCAN_B communication.

[0065] The power management module for the A-side wake-up system and the power management module for the B-side wake-up system are each powered by an independent power supply, and the two independent power supplies are separated by the K3 switch;

[0066] The wake-up pin of the upper-side A wake-up system is connected to the power supply through the control switch K1_A, and the control switch K1_A is controlled by the MCU main control chip of the lower-side A wake-up system; the wake-up pin of the upper-side B wake-up system is connected to the power supply through the control switch K1_B, and the control switch K1_B is controlled by the MCU main control chip of the lower-side B wake-up system.

[0067] The power management module of the A-side wake-up system and the power management module of the B-side wake-up system are powered by independent power supplies, and the two independent power supplies are separated by the K4 switch;

[0068] The wake-up pin of the downward-turned A-side wake-up system is connected to the power supply through the control switch K2_A, and the control switch K2_A is controlled by the MCU main control chip of the upward-turned A-side wake-up system; the wake-up pin of the downward-turned B-side wake-up system is connected to the power supply through the control switch K2_B, and the control switch K2_B is controlled by the MCU main control chip of the upward-turned B-side wake-up system.

[0069] Taking the A-side as an example, the VCC_A power supply not only supplies power to the power management module but also feeds into the module's wakeup pin, WakePin. This power supply is separated by switch K1_A, which is controlled by the lower A-side. If the upper A-side fails to wake up, the lower A-side cannot receive signals from the upper A-side via PCAN. The lower A-side determines that the upper A-side wakeup has failed and controls switch K1_A to close, providing the power management module with a new wakeup source to attempt to wake up the upper A-side. This method is applied simultaneously to the upper B-side, lower A-side, and lower B-side to maintain consistency.

[0070] The present invention has been described in detail above by way of specific embodiments and examples, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may make many variations and improvements, which should also be considered within the scope of protection of the present invention.

Claims

1. A fully redundant wake-up system for steer-by-wire, characterized in that: include: Four wake-up systems: up-to-A-side wake-up system, up-to-B-side wake-up system, down-to-A-side wake-up system, and down-to-B-side wake-up system; Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip; After receiving the vehicle bus network wake-up message, the CAN transceiver A1 module wakes up the power management module by pulling up the level of the wake-up pin; after being awakened, the power management module supplies power to the MCU main control chip, thereby waking up the entire wire control full-redundant wake-up system; The CAN transceiver A2 module of the upstream A-side wakeup system is connected to the wakeup pin, and the CAN transceiver A2 module of the upstream B-side wakeup system is connected to the wakeup pin. The wakeup pin of the upstream A-side wakeup system is connected to the wakeup pin of the upstream B-side wakeup system and separated by the K1 switch. The MCU main control chip of the upstream A-side wakeup system and the MCU main control chip of the upstream B-side wakeup system can both control the K1 switch to close, thereby controlling the cross-wakeup of the upstream A-side wakeup system and the upstream B-side wakeup system. The CAN transceiver A2 module of the downstream A-side wakeup system is connected to the wakeup pin, and the CAN transceiver A2 module of the downstream B-side wakeup system is connected to the wakeup pin; the wakeup pin of the downstream A-side wakeup system is connected to the wakeup pin of the downstream B-side wakeup system and separated by the K2 switch; the MCU main control chip of the downstream A-side wakeup system and the MCU main control chip of the downstream B-side wakeup system can both control the closure of the K2 switch, thereby controlling the cross-wakeup of the downstream A-side wakeup system and the downstream B-side wakeup system; The MCU main control chip of the upper transfer A side wakeup system is connected to the MCU main control chip of the upper transfer B side wakeup system through bus communication; the MCU main control chip of the lower transfer A side wakeup system is connected to the MCU main control chip of the lower transfer B side wakeup system through bus communication; The MCU main control chip of the upper-side A wakeup system monitors the power management module of the upper-side A wakeup system and the power management module of the upper-side B wakeup system at the same time; the MCU main control chip of the lower-side A wakeup system monitors the power management module of the lower-side A wakeup system and the power management module of the lower-side B wakeup system at the same time; the MCU main control chip of the upper-side B wakeup system monitors the power management module of the upper-side B wakeup system and the power management module of the upper-side A wakeup system at the same time; the MCU main control chip of the lower-side B wakeup system monitors the power management module of the lower-side B wakeup system and the power management module of the lower-side A wakeup system at the same time; The CAN transceiver A2 module of the upper A-side wake-up system is connected to the CAN transceiver A2 module of the lower A-side wake-up system through bus PCAN_A communication; the CAN transceiver A2 module of the upper B-side wake-up system is connected to the CAN transceiver A2 module of the lower B-side wake-up system through bus PCAN_B communication.

2. The fully redundant wake-up system for steer-by-wire according to claim 1, characterized in that: The power management module of the A-side wake-up system and the power management module of the B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K3 switch.

3. The fully redundant wake-up system for steer-by-wire according to claim 1, characterized in that: The power management module of the downlink A-side wake-up system and the power management module of the downlink B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K4 switch.

4. The fully redundant wake-up system for steer-by-wire according to claim 1, characterized in that: Each wake-up pin in the wake-up system is connected to the ignition switch signal KL15.

5. A fully redundant wake-up system for steer-by-wire, characterized in that: include: Four wake-up systems: up-to-A-side wake-up system, up-to-B-side wake-up system, down-to-A-side wake-up system, and down-to-B-side wake-up system; Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip; After receiving the vehicle bus network wake-up message, the CAN transceiver A1 module wakes up the power management module by pulling up the level of the wake-up pin; after being awakened, the power management module supplies power to the MCU main control chip, thereby waking up the entire wire control full-redundant wake-up system; Connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin; connect the CAN transceiver A2 module of the A-side wakeup system to the wakeup pin, and connect the CAN transceiver A2 module of the B-side wakeup system to the wakeup pin; The CAN transceiver A2 module of the upper A-side wakeup system is connected to the CAN transceiver A2 module of the lower A-side wakeup system via bus PCAN_A; the CAN transceiver A2 module of the upper B-side wakeup system is connected to the CAN transceiver A2 module of the lower B-side wakeup system via bus PCAN_B; when a vehicle bus network wakeup message appears, if bus PCAN_A does not receive a message for the upper A-side wakeup system or the lower A-side wakeup system, a wakeup message is sent to bus PCAN_A; if bus PCAN_B does not receive a message for the upper B-side wakeup system or the lower B-side wakeup system, a wakeup message is sent to bus PCAN_B; The MCU main control chip of the upper-side A wake-up system is connected to the MCU main control chip of the upper-side B wake-up system through bus communication; the MCU main chip of the lower-side A wake-up system is connected to the MCU main control chip of the lower-side B wake-up system through bus communication; the MCU main chip of each wake-up system monitors the power management module corresponding to its own wake-up system.

6. The fully redundant wake-up system for steer-by-wire according to claim 5, characterized in that: The power management module of the A-side wake-up system and the power management module of the B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K3 switch.

7. The fully redundant wake-up system for steer-by-wire according to claim 5, characterized in that: The power management module of the downlink A-side wake-up system and the power management module of the downlink B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K4 switch.

8. A fully redundant wake-up system for wire-controlled steering, characterized in that: include: Four wake-up systems: up-to-A-side wake-up system, up-to-B-side wake-up system, down-to-A-side wake-up system, and down-to-B-side wake-up system; Each of the wake-up systems includes a CAN transceiver A1 module, a CAN transceiver A2 module, a power management module and an MCU main control chip; Each power management module in the wake-up system has a wake-up pin, and the wake-up pin is connected to the ignition switch signal KL15; The wakeup pin of the A-side wakeup system is connected to the wakeup pin of the B-side wakeup system and separated by the K1 switch. The MCU main control chip of the A-side wakeup system and the MCU main control chip of the B-side wakeup system can both control the K1 switch to close, thereby controlling the cross-wakeup of the A-side wakeup system and the B-side wakeup system. The wakeup pin of the downward-transferring A-side wakeup system is connected to the wakeup pin of the downward-transferring B-side wakeup system and separated by the K2 switch. The MCU main control chip of the downward-transferring A-side wakeup system and the MCU main control chip of the downward-transferring B-side wakeup system can both control the closure of the K2 switch to control the cross-wakeup of the downward-transferring A-side wakeup system and the downward-transferring B-side wakeup system. The MCU main control chip of the upper transfer A side wakeup system is connected to the MCU main control chip of the upper transfer B side wakeup system through bus communication; the MCU main control chip of the lower transfer A side wakeup system is connected to the MCU main control chip of the lower transfer B side wakeup system through bus communication; The MCU main control chip of the upper-side A wakeup system monitors the power management module of the upper-side A wakeup system and the power management module of the upper-side B wakeup system at the same time; the MCU main control chip of the lower-side A wakeup system monitors the power management module of the lower-side A wakeup system and the power management module of the lower-side B wakeup system at the same time; the MCU main control chip of the upper-side B wakeup system monitors the power management module of the upper-side B wakeup system and the power management module of the upper-side A wakeup system at the same time; the MCU main control chip of the lower-side B wakeup system monitors the power management module of the lower-side B wakeup system and the power management module of the lower-side A wakeup system at the same time; The CAN transceiver A2 module of the upper A-side wake-up system is connected to the CAN transceiver A2 module of the lower A-side wake-up system through bus PCAN_A communication; the CAN transceiver A2 module of the upper B-side wake-up system is connected to the CAN transceiver A2 module of the lower B-side wake-up system through bus PCAN_B communication.

9. The fully redundant wake-up system for steer-by-wire according to claim 8, characterized in that: The power management module of the A-side wake-up system and the power management module of the B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K3 switch; The wake-up pin of the upper-side A wake-up system is connected to the power supply through the control switch K1_A, and the control switch K1_A is controlled by the MCU main control chip of the lower-side A wake-up system; the wake-up pin of the upper-side B wake-up system is connected to the power supply through the control switch K1_B, and the control switch K1_B is controlled by the MCU main control chip of the lower-side B wake-up system.

10. The fully redundant wake-up system for steer-by-wire according to claim 8, characterized in that: The power management module of the downlink A-side wake-up system and the power management module of the downlink B-side wake-up system are respectively powered by independent power supplies, and the two independent power supplies are separated by a K4 switch; The wake-up pin of the downward-turned A-side wake-up system is connected to the power supply through the control switch K2_A, and the control switch K2_A is controlled by the MCU main control chip of the upward-turned A-side wake-up system; the wake-up pin of the downward-turned B-side wake-up system is connected to the power supply through the control switch K2_B, and the control switch K2_B is controlled by the MCU main control chip of the upward-turned B-side wake-up system.

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