ECU delayed sleep control method and device, equipment, storage medium and product

Abstract

The invention discloses an ECU delayed dormancy control method, device and equipment, a storage medium and a product, and relates to the technical field of vehicle-mounted communication, and the method comprises the steps: when it is detected that a vehicle ignition key is powered off, sending a hard wire activation signal to a target ECU to be subjected to delayed dormancy; sending a bus enable signal to the target ECU according to the delayed sleep demand of the target ECU; and performing delayed sleep control on the target ECU through the hardwire activation signal and the bus enable signal. According to the method and the device, the hard wire activation signal is sent to the target ECU to be dormant in a delayed manner, the ECU is controlled to be activated or closed, the bus enable signal is sent to the target ECU according to the dormancy delay demand of each target ECU, partial functions in the ECU are controlled to be awakened through the bus enable signal, and the ECU is dormant after the delay demand time is reached, so that the dormancy of the ECU is delayed. Therefore, the dormancy delay time of each ECU can be intelligently transferred according to the functional requirements of the whole vehicle, and unified dormancy control is carried out.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted communication technology, and in particular to an ECU delayed sleep control method, device, equipment, storage medium and product. Background Art

[0002] After the vehicle ignition key is powered off, some ECUs immediately stop network communication, and their networks and controllers themselves enter a dormant state. However, some ECUs also need to delay receiving and sending messages for a period of time to meet the needs of certain vehicle functions after power is off. For example, after the vehicle ignition key is powered off, the steering wheel column needs to collect the vehicle speed for a period of time in order to perform the steering column locking function. For example, within 5 minutes after the vehicle ignition key is powered off, the driver can still operate the EPB switch to realize the EPB parking and release functions. Therefore, it is necessary to manage these ECUs that need to delay dormancy after the vehicle ignition key is powered off.

[0003] At present, the existing solutions all require the ECU to delay sleep and automatically enter sleep after a period of delay after power off. This method does not have a unified central processing unit to perform intelligent control according to the needs of the entire vehicle. When the ECU fails, delayed sleep cannot be achieved, and overall scheduling and fault monitoring cannot be performed. Summary of the invention

[0004] The main purpose of this application is to provide an ECU delayed sleep control method, device, equipment, storage medium and product, aiming to solve the technical problem that it is impossible to uniformly control the sleep of multiple ECUs that need delayed sleep.

[0005] To achieve the above purpose, the present application proposes an ECU delayed sleep control method, the method comprising:

[0006] When it is detected that the vehicle ignition key is powered off, a hard-wire activation signal is sent to the target ECU to be delayed in dormancy;

[0007] Sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU;

[0008] The target ECU is subjected to delayed sleep control through the hard-line activation signal and the bus enable signal.

[0009] In one embodiment, the step of sending a hard-line activation signal to the target ECU to be delayed in dormancy when the ignition key of the vehicle is detected to be powered off includes:

[0010] When it is detected that the vehicle ignition key is powered off, a low-level hard-line activation signal is sent to the target ECU to be delayed in dormancy, and the network of the target ECU is shut down;

[0011] When the first duration is reached, sending a high-level hard-line activation signal to the target ECU and activating the network of the target ECU;

[0012] When the second time period is reached, the target ECU is set to a degraded mode.

[0013] In one embodiment, the step of sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU includes:

[0014] When the third duration is reached, continuously sending a local wake-up signal to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU, and waking up the delayed sleep requirement function in the target ECU through the local wake-up signal until the delayed sleep requirement duration is reached, and the second duration is greater than the third duration;

[0015] When the delayed sleep requirement time is reached, the target ECU is controlled to enter a sleep state.

[0016] In one embodiment, before the step of continuously sending a local wake-up signal to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU when the third duration is reached, the step further includes:

[0017] The third duration is determined according to the hot start time of the target ECU.

[0018] In one embodiment, before the step of sending a hard-line activation signal to the target ECU to be delayed in dormancy when the ignition key of the vehicle is detected to be powered off, the step further includes:

[0019] When it is detected that the vehicle ignition key is powered on, the vehicle power gear is switched from the off gear to the on gear;

[0020] Sending a high-level hard-line activation signal to a target ECU to be delayed in sleep mode, and activating the target ECU through the high-level hard-line activation signal;

[0021] When the preset wake-up time is reached, a full-function wake-up signal is sent to the target ECU, and the target ECU is woken up by the full-function wake-up signal.

[0022] In one embodiment, after the step of sending a full-function wake-up signal to the target ECU when the preset wake-up time is reached and waking up the target ECU by the full-function wake-up signal, the step further includes:

[0023] When the target ECU fails to wake up, the vehicle power level and the target ECU are subjected to fault detection, and the detected fault cause is uploaded to the central processing unit.

[0024] In addition, to achieve the above purpose, the present application also proposes an ECU delayed sleep control device, the ECU delayed sleep control device comprising:

[0025] A hard-line activation signal sending module is used to send a hard-line activation signal to a target ECU to be delayed in dormancy when it is detected that the vehicle ignition key is powered off;

[0026] A bus enable signal sending module, used for sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU;

[0027] The delayed sleep control module is used to perform delayed sleep control on the target ECU through the hard-line activation signal and the bus enable signal.

[0028] In addition, to achieve the above-mentioned purpose, the present application also proposes an ECU delayed sleep control device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the ECU delayed sleep control method as described above.

[0029] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the ECU delayed sleep control method as described above are implemented.

[0030] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the ECU delayed sleep control method as described above are implemented.

[0031] The present application provides an ECU delayed sleep control method, which sends a hard-wire activation signal to the target ECU to be delayed in sleep when it is detected that the vehicle ignition key is powered off; sends a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; and controls the delayed sleep of the target ECU through the hard-wire activation signal and the bus enable signal. Since the present application controls the activation or shutdown of the ECU by sending a hard-wire activation signal to the target ECU to be delayed in sleep, and sends a bus enable signal to the target ECU according to the delayed sleep requirement of each target ECU, controls the wake-up of some functions in the ECU through the bus enable signal, and sleeps the ECU after the delayed required time is reached, it can intelligently adjust the delayed sleep time of each ECU according to the functional requirements of the whole vehicle, and perform unified sleep control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A flowchart of the first embodiment of the ECU delayed sleep control method of the present application is provided;

[0035] Figure 2 This is a schematic diagram of the structure of the gateway device of the ECU delayed sleep control method of this application;

[0036] Figure 3 A flow chart of the second embodiment of the ECU delayed sleep control method of the present application;

[0037] Figure 4 A flowchart of the third embodiment of the ECU delayed sleep control method of the present application is provided;

[0038] Figure 5 This is a schematic diagram of the overall process of the ECU delayed sleep control method of this application;

[0039] Figure 6 This is a schematic diagram of the module structure of the ECU delayed sleep control device according to an embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of the device structure of the hardware operating environment involved in the ECU delayed sleep control method in the embodiment of the present application.

[0041] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0043] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0044] The main solution of the embodiment of the present application is: when it is detected that the vehicle ignition key is powered off, a hard-line activation signal is sent to the target ECU to be delayed in sleep; a bus enable signal is sent to the target ECU according to the delayed sleep requirement of the target ECU; and the target ECU is controlled to be delayed in sleep through the hard-line activation signal and the bus enable signal.

[0045] The existing solutions all require the ECU to delay sleep and automatically enter sleep mode after a certain period of delay after power off. This method does not have a unified central processing unit to perform intelligent control according to the needs of the vehicle. When the ECU fails, delayed sleep cannot be achieved, and overall scheduling and fault monitoring cannot be performed.

[0046] The present application provides a solution, which sends a hard-wire activation signal to the target ECU to be delayed in sleep when it is detected that the vehicle ignition key is powered off; sends a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; and controls the delayed sleep of the target ECU through the hard-wire activation signal and the bus enable signal. Since the present application controls the activation or shutdown of the ECU by sending a hard-wire activation signal to the target ECU to be delayed in sleep, and sends a bus enable signal to the target ECU according to the delayed sleep requirement of each target ECU, the bus enable signal is used to control the wake-up of some functions in the ECU, and the ECU is put into sleep after the delayed required time is reached, the delayed sleep time of each ECU can be intelligently adjusted according to the functional requirements of the whole vehicle, and unified sleep control can be performed.

[0047] It should be noted that the execution subject of the method of this embodiment can be an intelligent gateway device with ECU delayed sleep control, network communication and program running functions, or a car equipped with the intelligent gateway device. This embodiment and the following embodiments will be described by taking the intelligent gateway device as an example.

[0048] Based on this, the embodiment of the present application provides an ECU delayed sleep control method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the ECU delayed sleep control method of the present application.

[0049] In this embodiment, the ECU delayed sleep control method includes steps S10 to S30:

[0050] Step S10, when it is detected that the vehicle ignition key is powered off, a hard-line activation signal is sent to the target ECU to be delayed in dormancy.

[0051] It should be noted that in order to better manage the delayed sleep of such ECUs after power-off, this application provides a software and hardware-based fault tolerance mechanism and gateway device. Figure 2The structure of the gateway device is described. The intelligent gateway includes a central processing unit, a hardware driver module, and a signal processing module. The intelligent gateway uniformly manages and controls the ECUs that are delayed in sleep after power-off, and adopts software and hardware redundancy mechanisms to improve its reliability and fault tolerance. It can intelligently adjust the delayed sleep time of each ECU according to the functional requirements of the vehicle, and can also monitor ECU failures.

[0052] It is understandable that the central processing unit integrates the sleep and wake-up control strategies and drivers of the important ECUs in this network segment. The intelligent gateway is connected to the ECU through hard wires and buses at the same time. The hard wire is defined as a driving hard wire, with an output of 12V as high effective and an output of 0V as low effective. The bus can be a commonly used vehicle bus network such as CAN (Controller Area Network), CANFD (CAN with FlexibleData rate) or Ethernet (100Base-T1 / 1000Base-T1). Hardware driver module: The intelligent gateway drives and activates the ECU through hard wires. Signal processing module: The intelligent gateway sends relevant enable signals to the ECU through the bus.

[0053] It is worth noting that this embodiment takes the CAN bus as an example, and the target ECU to be delayed in sleep is described by taking ESC as an example. Electronic Stability Control (ESC) is an active safety technology for automobiles. By installing lateral acceleration sensors, yaw rate sensors, steering wheel angle sensors and other equipment on the vehicle, the vehicle's driving state is monitored in real time. When the vehicle skids or loses control, ESC can adjust the stability of the vehicle in time by controlling the driving force and braking force of the front and rear and left and right wheels, effectively reducing the probability of accidents and improving the safety of the vehicle.

[0054] It is understandable that after detecting that the vehicle ignition key is powered off, the vehicle power gear is switched from the start gear ON / Start gear to the shutdown gear OFF gear. The smart gateway sends a hard-line activation signal to the ESC, and the hard-line activation signal includes a signal that is pulled down from 12V to 0V, or pulled up from 0V to 12V.

[0055] Step S20: sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU.

[0056] It is understandable that different ECUs have different requirements after powering off. For example, after the vehicle ignition key is powered off, the steering wheel and steering column need to collect the vehicle speed for a period of time in order to perform the steering column locking function. Alternatively, within 5 minutes after the vehicle ignition key is powered off, the driver can still operate the EPB switch to realize the EPB parking and release functions. Alternatively, the ESC controller needs to delay sending the vehicle speed message for 5 to 6 minutes after the ignition key is powered off for the first time according to the requirements of the vehicle function. However, during this period, the ESC function is not exactly the same as the function when the ignition key is powered on. Only some functions need to be awakened, which can detect the vehicle speed and send a speed signal. This is called partial function awakening. All functions are turned on when the ignition key is powered on, which is called full function awakening.

[0057] It should be understood that the bus enable signal can be sent to the target ECU according to the delayed sleep requirements corresponding to different target ECUs. For example, the bus enable signal can be a vehicle speed request signal, an EPB switch request signal, and the like.

[0058] Step S30 , performing delayed sleep control on the target ECU through the hard-line activation signal and the bus enable signal.

[0059] It is understandable that the target ECU can be delayed in sleep control through the hard-line activation signal and the bus enable signal. The target ECU is driven or activated through the hard-line activation signal, and then some functions in the target ECU are controlled to remain awake through the bus enable signal, and then the target ECU is controlled to sleep after the delay requirement time is reached.

[0060] This embodiment provides an ECU delayed sleep control method, which sends a hard-wire activation signal to the target ECU to be delayed in sleep when it is detected that the vehicle ignition key is powered off; sends a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; and controls the delayed sleep of the target ECU through the hard-wire activation signal and the bus enable signal. Since this embodiment controls the activation or shutdown of the ECU by sending a hard-wire activation signal to the target ECU to be delayed in sleep, and sends a bus enable signal to the target ECU according to the delayed sleep requirement of each target ECU, the bus enable signal is used to control the wake-up of some functions in the ECU, and the ECU is put into sleep after the delay requirement time is reached, the delayed sleep time of each ECU can be intelligently adjusted according to the functional requirements of the whole vehicle, and unified sleep control can be performed.

[0061] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can refer to the above introduction, and will not be repeated later. Figure 3 , step S10, the ECU delayed sleep control method includes steps S101 to S103:

[0062] Step S101, when it is detected that the vehicle ignition key is powered off, a low-level hard-line activation signal is sent to the target ECU to be delayed in dormancy, and the network of the target ECU is shut down.

[0063] It is understandable that the target ECU is ESC. After detecting that the vehicle ignition key is powered off, the vehicle power gear is switched from ON / Start to OFF. And the smart gateway sends a low-level hard-line activation signal to the ESC, pulling it down from 12V to 0V, maintaining the first duration T1, and the ESC will enter a transition state within the T1 time. In this state, the ESC network is in a closed state. The smart gateway also does not send any bus request signal to the ESC. By reducing the voltage from 12V to 0V, it can be ensured that the ESC and other related electronic control units have enough time to save data and record status before the power is turned off, preventing data loss or damage caused by sudden power failure. It can effectively reduce standby power consumption and extend the service life of the battery. By controlling the slow decline in voltage, a smooth transition of vehicle functions from operating mode to complete shutdown can be achieved, providing users with a more comfortable driving experience end process.

[0064] Step S102, when the first time duration is reached, sending a high-level hard-line activation signal to the target ECU, and activating the network of the target ECU.

[0065] It is understandable that after the first duration T1 times out, the smart gateway sends a hard-line activation signal to the ESC, raising the voltage from 0V to 12V and maintaining the second duration T2.

[0066] Step S103: When the second time period is reached, the target ECU is set to a degraded mode.

[0067] It should be understood that if the second time period T2 is exceeded (a deviation of ±10% may be allowed), the ESC enters the degradation mode and feeds back its own status to the central processing unit: the ESC enters the degradation mode.

[0068] In a feasible implementation, step S20 may include steps S201 to S202:

[0069] Step S201, when the third duration is reached, a local wake-up signal is continuously sent to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU, and the delayed sleep requirement function in the target ECU is awakened by the local wake-up signal until the delayed sleep requirement duration is reached, and the second duration is greater than the third duration.

[0070] It should be noted that the CAN bus signal sent by the gateway to the ESC is defined as shown in the following table, where 0 indicates no request and 1 indicates a wake-up request.

[0071]

[0072] It is understandable that when the third duration T3 is reached (T3 < T2), the smart gateway will continue to send a local wake-up signal to the ESC. Since the delayed sleep requirement of the ESC is to request the vehicle speed, when the target ecu is the ESC, the local wake-up signal can be set to the vehicle speed request signal VehicleSpeedEnable = 1, and the ESC switches from the transition state to the local wake-up state. During the delayed sleep requirement duration, the ESC continues to receive the vehicle speed request VehicleSpeedEnable = 1 from the smart gateway in the OFF gear, and the ESC remains in the local wake-up state until the delayed sleep requirement duration T4 is reached. The ESC can start some functions in the local wake-up state to ensure that the signals required by the entire vehicle are sent, such as the continuous issuance of the vehicle speed signal. In this embodiment, T4 can be set to 5min or 6min to meet the requirement of the entire vehicle to delay sending the vehicle speed signal for 5 to 6 minutes in the premise.

[0073] Step S202: When the delayed sleep requirement time is reached, control the target ECU to enter a sleep state.

[0074] It is understandable that when the ESC reaches the delayed sleep requirement time T4 in the local awakening state, it stops receiving the vehicle speed request from the smart gateway and controls the ESC to enter the sleep state.

[0075] In a feasible implementation manner, before step S201, step S21 may also be included:

[0076] Step S21, determining a third duration according to the hot start time of the target ECU.

[0077] It is understandable that the third duration T3 should meet the time requirements for ECU hot start. Cold start refers to a controller with no power to the microprocessor after sleep, and hot start refers to a controller with power to the microprocessor after sleep. Hot start refers to the process experienced when the vehicle engine restarts at high temperature. In this process, the ECU needs to quickly adapt to the new working state to ensure the normal operation of the vehicle. According to the description of test pulse 4 in ISO 16750-2 and ISO 7637-2 standards, the battery voltage can drop to 5V or 6V during hot start, and the voltage drop time is usually shorter than cold start. In general, the regular time requirements for ECU hot start can be around 5 milliseconds. This time requirement is critical to ensure that the vehicle can restart quickly and stably at high temperatures.

[0078] In this embodiment, when it is detected that the vehicle ignition key is powered off, a high-level hard-line activation signal is sent to the target ECU. When the third time period is reached, a local wake-up signal is continuously sent to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU, and the delayed sleep requirement function in the target ECU is awakened by the local wake-up signal until the delayed sleep requirement time period is reached, and the second time period is greater than the third time period; thereby, the target ECU can be controlled to enter a sleep state when the delayed sleep requirement time period is reached.

[0079] Based on the first embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those in the first embodiment can be referred to the above description, and will not be described in detail later. Figure 4 Before step S10, the ECU delayed sleep control method further includes steps S01 to S03:

[0080] Step S01, when it is detected that the vehicle ignition key is powered on, the vehicle power gear is switched from the off gear to the on gear.

[0081] It is understandable that after detecting that the vehicle ignition key is powered on, the vehicle power gear is switched from OFF to ON / Start.

[0082] Step S02, sending a high-level hard-line activation signal to the target ECU to be delayed in sleep mode, and activating the target ECU through the high-level hard-line activation signal.

[0083] It should be understood that the smart gateway sends a high-level hard-wire activation signal to the ESC, which is pulled up from 0V to 12V, and activates the target ECU through the high-level hard-wire activation signal.

[0084] Step S03: When the preset wake-up time is reached, a full-function wake-up signal is sent to the target ECU, and the target ECU is woken up by the full-function wake-up signal.

[0085] It is understandable that the gateway device sends a network CAN signal after the duration Twakeup: full-function wake-up request MainWakeupEnable = 1. After the ESC detects that the ignition key is switched from OFF to ON / Start, and at the same time detects that the fault-tolerant hard line changes from 0V to 12V, and receives the request signal MainWakeupEnable = 1 from the gateway, the ESC enters the full-function wake-up state. If the ESC needs to maintain the full-function wake-up state, the fault-tolerant hard line of the smart gateway needs to continuously output a 12V high level, and the smart gateway needs to continuously send a full-function wake-up request MainWakeupEnable = 1.

[0086] In a feasible implementation manner, after step S03, step S04 may also be included:

[0087] Step S04, when the target ECU fails to wake up, a fault detection is performed on the vehicle power level and the target ECU, and the detected fault cause is uploaded to the central processing unit.

[0088] It is understandable that when the ESC is in a dormant state, if any of the following conditions is not met: ① the vehicle power gear is switched from OFF to ON / Start and ② the smart gateway sends a hard-wire activation signal to the ESC from 0V to 12V, the ESC will not be awakened. When the target ECU fails to wake up, the vehicle power gear and the target ECU are fault-detected, and the detected fault cause is uploaded to the central processor, which can report the fault cause of the ESC failure to the customer interface or maintenance personnel.

[0089] In this embodiment, after the ESC detects that the ignition key is switched from OFF to ON / Start, and detects that the fault-tolerant hard line changes from 0V to 12V, and receives a request signal from the gateway, the ESC enters a full-function wake-up state. The fault-tolerant hard line of the intelligent gateway continuously outputs a 12V high level, and the intelligent gateway continuously issues a full-function wake-up request, thereby maintaining the full-function wake-up state of the ESC, and enabling unified fault detection and reporting when each ECU fails to wake up.

[0090] For example, in order to help understand the implementation process of the ECU delayed sleep control method obtained by combining this embodiment with the above-mentioned embodiment 1, please refer to Figure 5 , Figure 5 An overall flow chart of an ECU delayed sleep control method is provided, specifically:

[0091] This example takes the CAN bus as an example, and the ECU takes the ESC as an example. Fault tolerance mechanism for the first wake-up at power-on:

[0092] ① When the ESC is in dormant mode, the vehicle power position switches from OFF to ON / Start after the vehicle ignition key is turned on;

[0093] ②The smart gateway sends a hard-wire activation signal to the ESC, raising it from 0V to 12V;

[0094] ③ Then, the gateway sends a network CAN signal after the duration Twakeup: full-function wake-up request MainWakeupEnable = 1;

[0095] ④After ESC detects that the ignition key is switched from OFF to ON / Start, and detects that the fault-tolerant hardwire changes from 0V to 12V at the same time, and receives the request signal MainWakeupEnable=1 from the gateway, ESC enters the full-function wake-up state. If ESC needs to maintain the full-function wake-up state, the fault-tolerant hardwire of the intelligent gateway needs to continuously output a 12V high level, and the intelligent gateway needs to continuously issue a full-function wake-up request MainWakeupEnable=1. When ESC is in a dormant state and does not meet any of the conditions ① and ②, ESC will not be awakened, and the central processor will report the fault reason why ESC cannot be awakened.

[0096] Fault-tolerance mechanism for delayed sleep at power-off:

[0097] ⑤ After the vehicle ignition key is turned off, the vehicle power position switches from ON / Start to OFF;

[0098] ⑥ The smart gateway sends a hard-wired activation signal to the ESC, pulling it down from 12V to 0V and maintaining the duration of T1. The ESC will enter a transition state within the T1 time, and the ESC network will be shut down in this state. The smart gateway also does not send any bus request signals to the ESC. During the power switching process, by reducing the voltage from 12V to 0V, it can ensure that the ESC and other related electronic control units have enough time to save data and record status before the power is turned off, preventing data loss or damage caused by sudden power outages. It can effectively reduce standby power consumption and extend the service life of the battery. By controlling the slow drop in voltage, a smooth transition of vehicle functions from operating mode to complete shutdown can be achieved, providing users with a more comfortable driving experience at the end of the process;

[0099] ⑦ After T1 times out, the smart gateway sends a hard-line activation signal to the ESC, raising the voltage from 0V to 12V and maintaining the duration of T2;

[0100] If T2 times out (±10% deviation), the ESC enters degradation mode and feeds back its status to the central processing unit: ESC enters degradation mode;

[0101] ⑧After T3 time (T3<T2), the smart gateway will send a vehicle speed request to ESC: VehicleSpeedEnable=1;

[0102] ⑨After ESC detects that the ignition key is switched from ON / Start to OFF, after T1 times out, it detects that the fault-tolerant hardware is pulled up to 12V, and after T3 time, it starts to receive the vehicle speed request VehicleSpeedEnable=1, and ESC switches from the transition state to the partial awakening state. After that, in the OFF gear, the vehicle speed request VehicleSpeedEnable=1 is continuously received from the smart gateway, and ESC remains in the partial awakening state for T4. ESC can start some functions in the partial awakening state to ensure that the signals required by the entire vehicle are sent, such as the continuous sending of the vehicle speed signal;

[0103] ⑩ In the OFF gear, the vehicle speed request from the smart gateway stops being received. VehicleSpeedEnable=1, and ESC starts to enter the sleep state.

[0104] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the ECU delayed sleep control method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0105] This application also provides an ECU delayed sleep control device, please refer to Figure 6 , the ECU delayed sleep control device comprises:

[0106] A hard-line activation signal sending module 10 is used to send a hard-line activation signal to a target ECU to be delayed in dormancy when it is detected that the vehicle ignition key is powered off;

[0107] A bus enable signal sending module 20, used to send a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU;

[0108] The delayed sleep control module 30 is used to perform delayed sleep control on the target ECU through the hard-line activation signal and the bus enable signal.

[0109] The ECU delayed sleep control device provided by the present application adopts the ECU delayed sleep control method in the above embodiment to solve the technical problem. Compared with the prior art, the beneficial effects of the ECU delayed sleep control device provided by the present application are the same as the beneficial effects of the ECU delayed sleep control method provided by the above embodiment, and other technical features in the ECU delayed sleep control device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0110] The present application provides an ECU delayed sleep control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the ECU delayed sleep control method in the above-mentioned embodiment one.

[0111] Reference below Figure 7 , which shows a schematic diagram of the structure of an ECU delayed sleep control device suitable for implementing an embodiment of the present application. The ECU delayed sleep control device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 7 The ECU delayed sleep control device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0112] like Figure 7As shown, the ECU delayed sleep control device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the ECU delayed sleep control device are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the ECU delayed sleep control device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an ECU delayed sleep control device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have alternatively.

[0113] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0114] The ECU delayed sleep control device provided by the present application adopts the ECU delayed sleep control method in the above embodiment, which can solve the technical problem of ECU delayed sleep control. Compared with the prior art, the beneficial effects of the ECU delayed sleep control device provided by the present application are the same as the beneficial effects of the ECU delayed sleep control method provided by the above embodiment, and other technical features in the ECU delayed sleep control device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0115] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0117] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the ECU delayed sleep control method in the above-mentioned embodiment.

[0118] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0119] The computer-readable storage medium may be included in the ECU delayed sleep control device; or may exist independently without being assembled into the ECU delayed sleep control device.

[0120] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the ECU delayed sleep control device, the ECU delayed sleep control device: sends a hard-wire activation signal to the target ECU to be delayed in sleep when it detects that the vehicle ignition key is powered off; sends a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; and performs delayed sleep control on the target ECU through the hard-wire activation signal and the bus enable signal.

[0121] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0122] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0123] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0124] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned ECU delayed sleep control method, and can solve technical problems. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the ECU delayed sleep control method provided by the above-mentioned embodiment, and will not be repeated here.

[0125] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned ECU delayed sleep control method when executed by a processor.

[0126] The computer program product provided by the present application can solve the technical problem. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the ECU delayed sleep control method provided by the above embodiment, which will not be described in detail here.

[0127] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An ECU delayed sleep control method, characterized in that: The method includes: When it is detected that the vehicle ignition key is powered off, a hard-wire activation signal is sent to the target ECU to be delayed in dormancy; Sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; The target ECU is subjected to delayed sleep control through the hard-line activation signal and the bus enable signal.

2. The method according to claim 1, characterized in that The step of sending a hard-line activation signal to the target ECU to be delayed in dormancy when the vehicle ignition key is detected to be powered off comprises: When it is detected that the vehicle ignition key is powered off, a low-level hard-line activation signal is sent to the target ECU to be delayed in dormancy, and the network of the target ECU is shut down; When the first duration is reached, sending a high-level hard-line activation signal to the target ECU and activating the network of the target ECU; When the second time period is reached, the target ECU is set to a degraded mode.

3. The method according to claim 2, characterized in that The step of sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU comprises: When the third duration is reached, continuously sending a local wake-up signal to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU, and waking up the delayed sleep requirement function in the target ECU through the local wake-up signal until the delayed sleep requirement duration is reached, and the second duration is greater than the third duration; When the delayed sleep requirement time is reached, the target ECU is controlled to enter a sleep state.

4. The method according to claim 3, characterized in that Before the step of continuously sending a local wake-up signal to the target ECU through the network of the target ECU according to the delayed sleep requirement of the target ECU when the third duration is reached, the method further includes: The third duration is determined according to the hot start time of the target ECU.

5. The method according to claim 1, characterized in that Prior to the step of sending a hard-line activation signal to the target ECU to be delayed in dormancy when the vehicle ignition key is detected to be powered off, the step further includes: When it is detected that the vehicle ignition key is powered on, the vehicle power gear is switched from the off gear to the on gear; Sending a high-level hard-line activation signal to a target ECU to be delayed in sleep mode, and activating the target ECU through the high-level hard-line activation signal; When the preset wake-up time is reached, a full-function wake-up signal is sent to the target ECU, and the target ECU is woken up by the full-function wake-up signal.

6. The method according to claim 5, characterized in that After the step of sending a full-function wake-up signal to the target ECU when the preset wake-up time is reached and waking up the target ECU by the full-function wake-up signal, the method further includes: When the target ECU fails to wake up, the vehicle power level and the target ECU are subjected to fault detection, and the detected fault cause is uploaded to the central processing unit.

7. An ECU delayed sleep control device, characterized in that: The ECU delayed sleep control device comprises: A hard-line activation signal sending module is used to send a hard-line activation signal to a target ECU to be delayed in dormancy when it is detected that the vehicle ignition key is powered off; A bus enable signal sending module, used for sending a bus enable signal to the target ECU according to the delayed sleep requirement of the target ECU; The delayed sleep control module is used to perform delayed sleep control on the target ECU through the hard-line activation signal and the bus enable signal.

8. An ECU delayed sleep control device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the ECU delayed sleep control method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the ECU delayed sleep control method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the ECU delayed sleep control method according to any one of claims 1 to 6 are implemented.

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