An intelligent power distribution wake-up system, method, device and storage medium

Abstract

The application relates to the technical field of automobile control, and discloses an intelligent power distribution wake-up system, method and device and a storage medium, the system comprising: a storage battery, a power management controller, at least one active wake-up controller, at least one passive wake-up controller and at least one electric appliance; the storage battery is electrically connected with the power management controller; the power management controller comprises a control power supply interface and a normal power supply interface; the active wake-up controller is connected with the normal power supply interface, and the passive wake-up controller is connected with the control power supply interface; when the electric appliance is in communication connection with the active wake-up controller, the electric appliance is connected with the normal power supply interface; and when the electric appliance is in communication connection with the passive wake-up controller, the electric appliance is connected with the control power supply interface. The application reduces the development cost of a wake-up circuit and further reduces the power consumption of the storage battery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile control, in particular to an intelligent power distribution wake-up system, method, device and storage medium. BACKGROUND

[0002] At present, the wake-up and sleep work of each element of an electric vehicle are controlled through CAN network management, each sensor, controller and the like are connected with the power supply and are in a low-power sleep state, when some sensors need to work, the main controller will send a CAN message to wake up the corresponding network segment sensors or sub-controllers, such a sleep circuit needs to develop CAN network management function, the development cycle of CAN network management is long, the cost is high, and it is more complex to adapt to the whole vehicle function, and after the whole vehicle is locked, the wake-up of the whole vehicle network completely relies on the interaction between the vehicle-mounted main controller itself and each functional element of the whole vehicle to realize the wake-up and sleep logic, resulting in more battery power loss of the whole vehicle. SUMMARY

[0003] Therefore, the present application provides an intelligent power distribution wake-up system, method, device and storage medium to solve the problem of high power consumption of the current wake-up circuit.

[0004] In a first aspect, the present application provides an intelligent power distribution wake-up system, characterized in that it comprises a storage battery, a power management controller, at least one active wake-up controller, at least one passive wake-up controller and at least one electric appliance; the storage battery is electrically connected with the power management controller; the active wake-up controller is a controller that actively wakes up itself to work in a vehicle off state, and the passive wake-up controller is a controller that works after receiving a wake-up electrical signal in a vehicle off state; the power controller comprises a control power supply interface and a normal power supply interface, the control power supply interface is used to output a wake-up electrical signal according to the received wake-up message, and the normal power supply interface is used to continuously output an electrical signal; the active wake-up controller is connected with the normal power supply interface, and the passive wake-up controller is connected with the control power supply interface; when the electric appliance is communicatively connected with the active wake-up controller, the electric appliance is connected with the normal power supply interface; when the electric appliance is communicatively connected with the passive wake-up controller, the electric appliance is connected with the control power supply interface.

[0005] According to the above technical means, the CAN network management function is directly cancelled, the active wake-up controller and the passive wake-up controller are directly connected to the power management chip, and two types of interfaces are provided for the power management chip, one is a normal power supply interface, and the other is a control power supply interface, and power supply is only provided under the condition of control opening. Thus, the active wake-up controller is in a low-power standby state in the vehicle off state, and is switched to a high-power state to send a wake-up message to the power management chip when it is triggered, and the power management chip supplies power to the corresponding controller to wake up, and the active wake-up controller can enter a low-power sleep state after sending the wake-up message successfully, without the need to maintain work, so that the technical solution provided by the embodiment of the application not only solves the development difficulty of the wake-up circuit, but also further reduces the power consumption of the battery.

[0006] In an alternative embodiment, the power consumers that need to be woken up simultaneously are connected to the same control power supply interface or the same normal power supply interface.

[0007] According to the above technical means, the components that need to sleep and wake up together are connected to one power supply line, and power supply means wake-up work, and power-off means stop work, so that the same group of components sleep and wake up together, and the work coordination degree and work efficiency of each component are further improved, and the power supply interface occupation of the power management chip is reduced.

[0008] In an alternative embodiment, the normal power supply interface is an electronic fuse interface, and the control power supply interface is a high-side driver chip interface.

[0009] According to the above technical means, the control power supply interface is configured as a high-side driver chip interface, the flexibility and accuracy of interface control are improved by using the programming control logic thereof, and the normal power supply interface is configured as an electronic fuse interface, and the safety of the normal power supply interface is ensured by combining the voltage protection function thereof.

[0010] In a second aspect, the application provides an intelligent power distribution wake-up method applied to a power management controller, which comprises the following steps: receiving a first wake-up message, the first wake-up message being a message sent by an active wake-up controller or a message input by an external device; outputting a wake-up electrical signal to a target passive wake-up controller in response to the first wake-up message, so as to make the target passive wake-up controller work; receiving a second wake-up message sent by the target passive wake-up controller; and outputting a wake-up electrical signal to a target power consumer controlled by the target passive wake-up controller in response to the second wake-up message, so as to make the target power consumer work.

[0011] According to the technical means, the active wake-up controller can be in a low-power standby state when the vehicle is off, and can be switched to a high-power state to send a wake-up message to the power management chip when triggered, so that the power management chip can supply power to the corresponding controller to wake up. After the active wake-up controller successfully sends the wake-up message, the active wake-up controller can enter a low-power sleep state and does not need to be maintained. The passive wake-up controller is woken up and functions in the same way as the active wake-up controller. The power management chip is used to wake up the corresponding controlled electric appliance, so that the electric appliance and the passive wake-up controller do not need to be powered on and do not need to be in a low-power state when not in use, and can be directly powered off. According to the technical solution provided in the embodiment, the development difficulty of the wake-up circuit is solved, and the power consumption of the battery is further reduced.

[0012] In an alternative embodiment, the method further comprises: after outputting the wake-up electrical signal to the first target device, detecting a power-on state of the target device, the first target device being a target electric appliance or a target passive wake-up controller; feeding back the power-on state to a second target device, the second target device being a device that sends the first wake-up message or the second wake-up message; receiving a retry wake-up message re-sent by the second target device, and re-outputting the wake-up electrical signal to the first target device in response to the retry wake-up message, the retry wake-up message being a message sent by the second target device when the second target device does not receive the power-on state within a preset time period or when the received power-on state indicates that the power-on fails, and the second target device stops sending the retry wake-up message after sending the retry wake-up message a preset number of times.

[0013] According to the technical means, in the case that the woken-up device fails to wake up, the power management chip further feeds back the power-on state to the device that sends the wake-up message, so that the device that sends the wake-up message repeatedly sends the wake-up message multiple times, so as to reduce the probability of wake-up failure and improve the reliability of the vehicle control.

[0014] In an alternative embodiment, the first wake-up message and the second wake-up message include request information, a source identifier, a sleep flag, a wake-up time, and a power supply interface identifier. The request information is used to indicate the identity of the device that outputs the wake-up electrical signal. The source identifier is used to indicate the identity of the device that sends the wake-up message. The sleep flag is used to indicate the sleep mode of the woken-up device, and the sleep mode includes automatic sleep and non-automatic sleep. The wake-up time is used to indicate the duration of automatic sleep. The power supply interface identifier is used to indicate the control power supply interface or the constant power supply interface that specifically outputs the wake-up electrical signal.

[0015] According to the technical means, the wake-up message can determine whether the device that sends the wake-up message is a legal device through the source identifier, so as to avoid hacker intrusion and cause vehicle control disorder. The automatic sleep and manual sleep functions of the woken-up device can be further realized through the sleep flag and the wake-up time, so as to improve the flexibility of the vehicle control.

[0016] In a third aspect, the present application provides an intelligent power distribution wake-up method applied to an active wake-up controller, the method comprising: sensing whether a sensed target exists in a preset range in a preset low-power state; switching to a preset high-power state and sending a first wake-up message to a power management controller when the sensed target exists in the preset range, so that the power management controller outputs a wake-up electrical signal in response to the first wake-up message; receiving a first feedback message sent by the power management controller, the first feedback message indicating that the power management controller has received the first wake-up message; and switching to the preset low-power state in response to the first feedback message.

[0017] In an optional implementation, the method further comprises: determining whether a preset timing moment is reached in the preset low-power state; switching to the preset high-power state and sending a third wake-up message to the power management controller when the preset timing moment is reached, so that the power management controller outputs the wake-up electrical signal in response to the third wake-up message; receiving a second feedback message sent by the power management controller, the second feedback message indicating that the power management controller has received the third wake-up message; and switching to the preset low-power state in response to the second feedback message.

[0018] According to the above technical means, the active wake-up controller can be in a low-power standby state in a vehicle off state, and can be switched to a high-power state to send an application wake-up message to a power management chip when triggered, so that the power management chip supplies power to the corresponding controller to wake up. The active wake-up controller can enter a low-power sleep state after successfully sending the wake-up message, and does not need to be maintained. Therefore, the technical solution provided by the embodiment of the present application not only solves the development difficulty of the wake-up circuit, but also further reduces the power consumption of the storage battery.

[0019] In a fourth aspect, the present application provides an intelligent power distribution wake-up device applied to a power management controller, the device comprising: a first message receiving module configured to receive a first wake-up message, the first wake-up message being a message sent by an active wake-up controller or a message input by an external device; a controller wake-up module configured to output a wake-up electrical signal to a target passive wake-up controller in response to the first wake-up message, so that the target passive wake-up controller wakes up and works; a second message receiving module configured to receive a second wake-up message sent by the target passive wake-up controller; and a user equipment wake-up module configured to output a wake-up electrical signal to a target user equipment corresponding to the target passive wake-up controller in response to the second wake-up message, so that the target user equipment wakes up and works.

[0020] In a fifth aspect, the present application provides a computer readable storage medium, the computer readable storage medium storing computer instructions, the computer instructions being configured to cause a computer to execute the method of the first aspect or any of the corresponding embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on these drawings.

[0022] Figure 1 is a structural schematic diagram of a related art wake-up circuit;

[0023] Figure 2 is a structural schematic diagram of an intelligent power distribution wake-up system according to an embodiment of the present application;

[0024] Figure 3 is a flowchart of an intelligent power distribution wake-up method according to an embodiment of the present application;

[0025] Figure 4 is another flowchart of an intelligent power distribution wake-up method according to an embodiment of the present application;

[0026] Figure 5 is a structural schematic diagram of an intelligent power distribution wake-up device according to an embodiment of the present application;

[0027] Figure 6 is another structural schematic diagram of an intelligent power distribution wake-up device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0029] At present, network management of vehicles is one of the important applications of CAN (Controller Area Network) bus. Generally, ECUs (Electronic Control Units) in each functional system of a vehicle are built into a CAN network based on the CAN bus, and the network management of the vehicle mainly manages the node sleep and wake-up of each ECU as a node. When the nodes of the CAN network are in a sleep state, the power consumption of the vehicle battery can be effectively reduced, so that the vehicle battery can have a longer standby time.

[0030] For example, OSEK (open systems and the corresponding interfaces for automotive electronics) is a commonly used CAN network management mechanism, which has the following synchronization characteristics: for each node in the same CAN network, all nodes can enter the sleep state at the same time only when the last node in the CAN network does not perform network requests or local functions, and when at least one node needs to perform network requests or local functions, the remaining nodes in the CAN network enter the wake-up state from the sleep state. This method still causes some nodes that do not participate in work to be in the wake-up state, thereby wasting the battery power, so the related art more or less improves the wake-up circuit and the CAN network management function.

[0031] For example Figure 1 Fig. 1 shows a wake-up circuit improved by the related art, in which the first node is an active wake-up node, i.e., the node can automatically wake itself up and start working at a specific time; the second node, the third node, and the fourth node are passive wake-up nodes, and can only be woken up by receiving a signal from the first node. Since the second node and the third node also do some other work in the background in some scenarios, the second node and the third node are connected to the switch control line (the ON line in Fig. 1) and the positive line of the vehicle (the VCC line in Fig. 1) in addition to being connected to the CAN network at the same time as the first node. Figure 1 Figure 1 ​The fourth node is connected to the CAN network, but is not connected to the ON line and the B+ line. Therefore, based on the above connection mode, when the vehicle is turned off, the first node, the second node and the third node are actually nodes that are constantly powered by the power supply, and the three nodes are in a low-power consumption state, because only the first node is an active wake-up node, so even if the second node and the third node are not awakened to work, the second node and the third node will still consume power in a low-power consumption state. When the first node actively wakes up itself to start working, the first node is in a high-power consumption state, and if the second node and the third node need to work, they will be awakened by the CAN message sent by the first node, so as to be converted into a high-power consumption state. If the fourth node needs to work, because the fourth node is not connected to the B+ line, the CAN message sent by the first node cannot wake up the fourth node, and the first node needs to output current through the power out end to supply power to the fourth node and wake up the fourth node, and if the work of the fourth node is not completed, the first node must wait for the work of the fourth node to be completed before converting from the high-power consumption state to the low-power consumption state and cutting off the output of the power out. It can be seen that the improved circuit provided by the related art still has the problem of wasting battery power to some extent, and based on this, the embodiments of the present application provide the following technical solutions to further reduce the power consumption of the battery.

[0032] According to the embodiments of the present application, a smart power distribution wake-up system is provided, as shown in the accompanying drawings, which comprises a battery, a power management controller, at least one active wake-up controller, at least one passive wake-up controller and at least one electrical appliance. Figure 2 The battery is electrically connected to the power management controller. The active wake-up controller is a controller that actively wakes up itself to work in a vehicle off state, and the passive wake-up controller is a controller that works after receiving a wake-up electrical signal in a vehicle off state. The power controller comprises a control power supply interface and a constant power supply interface, the control power supply interface is used to output a wake-up electrical signal according to a received wake-up message, and the constant power supply interface is used to continuously output an electrical signal. The active wake-up controller is connected to the constant power supply interface, and the passive wake-up controller is connected to the control power supply interface. When the electrical appliance is communicatively connected to the active wake-up controller, the electrical appliance is connected to the constant power supply interface. When the electrical appliance is communicatively connected to the passive wake-up controller, the electrical appliance is connected to the control power supply interface.

[0033] Specifically, the wake-up circuit system provided by the embodiments of the present application directly removes the CAN network management function, and realizes the wake-up and sleep of other controllers and electrical appliances by transmitting and receiving application messages through the power management controller, so as to further reduce the power consumption of the battery while reducing the difficulty of research and development.

[0034] The power management controller is a programmable switch module applied to the control system, which can be used to control the output current to each controller and consumer, and can adjust the size of the output current and the size of the output voltage in addition to controlling the output of the current, realizing the function of DC-DC conversion, and the power source of the power management controller is the storage battery in the vehicle. In the embodiment of the application, two types of output interfaces are configured for the power management controller, one is a control power supply interface, and the other is a constant power supply interface, wherein the control power supply interface is completely controlled by the power management controller and can be opened and closed at any time, and the constant power supply interface continuously outputs stable voltage and current and will not be powered off due to the sleep of the power management controller.

[0035] Based on this, in the embodiment, various controllers on the vehicle are defined into two categories according to the use scenarios of the controllers, one is an active wake-up controller, which can actively wake up itself to work in the vehicle off state, for example, can actively wake up itself to start working at a specific timing time; the other is a passive wake-up controller, which works after receiving a wake-up electrical signal in the vehicle off state. It should be noted that in the embodiment of the application, the wake-up electrical signal received by the passive wake-up controller can be a signal sent by the active wake-up controller, or a signal sent by an external device such as a cloud platform or a remote key.

[0036] Based on this, in the embodiment, the active wake-up controller is connected with the constant power supply interface, and the passive wake-up controller is connected with the control power supply interface; at the same time, according to the consumer objects (such as radar, camera, lamp, screen, etc.) controlled by each controller, if a consumer is controlled by an active wake-up controller, the consumer is also connected with the constant power supply interface, and if a consumer is controlled by a passive wake-up controller, the consumer is also connected with the control power supply interface.

[0037] In addition, in the embodiment, the active wake-up controller, the passive wake-up controller and the consumer are connected through the CAN network, but the active wake-up controller and the passive wake-up controller only perform specific consumer control functions and data acquisition functions through the CAN network, and do not use CAN messages for wake-up functions, so that the CAN network has no effect in the wake-up circuit and is no longer embodied in the wake-up circuit. Figure 2

[0038] ​Based on the wake-up system provided in the embodiment, when the vehicle is in an off state, the power management chip supplies power to the active wake-up controller, the active wake-up controller can be in a low-power standby state, and when the active wake-up controller is triggered by an event to actively wake up, the active wake-up controller is switched to a high-power state. After the active wake-up controller is converted to the high-power state, the active wake-up controller no longer directly sends CAN messages to each passive wake-up controller and the power consumer, but sends an application wake-up message (used to request power supply) to the power management chip. The power management chip responds to the received application wake-up message and supplies power to the corresponding passive wake-up controller or power consumer through the wake-up electrical signal distribution software module and the execution software module to wake up. After the active wake-up controller successfully sends the application wake-up message, the active wake-up controller can immediately enter a low-power sleep state and does not need to maintain work, and subsequent power supply work is completed by the power management controller, thereby reducing power consumption. Moreover, the passive wake-up controller connected to the control power supply interface is not powered, because it does not need to receive the CAN wake-up message, so the passive wake-up controller does not need to be in a low-power sleep state before being woken up, and can be directly powered off and shut down. Therefore, by using the technical solution provided in the embodiment, the CAN network management function is removed, which not only reduces the development difficulty of the wake-up circuit, but also further reduces the power consumption of the battery.

[0039] In some optional embodiments, the intelligent power distribution wake-up system provided in the embodiment further connects the power consumers that need to be woken up at the same time to the same control power supply interface or the same normal power supply interface.

[0040] Specifically, the embodiment further divides the components that need to sleep and wake up together into a group, and performs one-way power distribution, so that the components are powered on and woken up, and powered off and stopped working, so that the components in the same group sleep and wake up at the same time, thereby further improving the working coordination degree and working efficiency of the components and reducing the power supply interface occupation of the power management chip. For example, a vehicle has multiple radar cameras, which need to work at the same time although they are installed at different positions, and the multiple radar cameras can be connected to the same control power supply interface or the normal power supply interface.

[0041] In some optional embodiments, the normal power supply interface is an electronic fuse interface, and the control power supply interface is a high-side driver chip interface.

[0042] Specifically, the eFuse (electronic Fuse) is a programmable electronic fuse, and the eFuse can be used to prevent the circuit from being damaged by overvoltage or overcurrent, and can also be used for anti-tampering, anti-cracking and the like. Based on this, the embodiment of the present application adopts an electronic fuse interface to configure a normal power supply interface, so that the protection function can be realized in time under the conditions of overvoltage and overcurrent during the period when the power management controller keeps the normal power supply interface open, and to a certain extent, the hacker can be prevented from hacking into the vehicle through the normal power supply interface, thereby improving the safety of the vehicle control. In addition, the embodiment of the present application adopts a High-side Driver (HSD) chip interface as a control power supply interface, and the current flowing out of the positive pole of the power supply is flexibly controlled through the chip, thereby further improving the flexibility of the vehicle wake-up control.

[0043] According to the embodiment of the present application, a smart power distribution wake-up method is also provided. It should be noted that the steps shown in the flowchart can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0044] In the present embodiment, a smart power distribution wake-up method is provided, which can be used for the power management controller described above, Figure 3 is a flowchart of a smart power distribution wake-up method according to the embodiment of the present application, and the flowchart includes the following steps:

[0045] Step S101, receiving a first wake-up message, the first wake-up message being a message sent by an active wake-up controller or a message input by an external device;

[0046] Step S102, in response to the first wake-up message, outputting a wake-up electrical signal to a target passive wake-up controller to wake up the target passive wake-up controller to work;

[0047] Step S103, receiving a second wake-up message sent by the target passive wake-up controller;

[0048] Step S104, in response to the second wake-up message, outputting a wake-up electrical signal to a target electrical appliance controlled by the target passive wake-up controller to wake up the target electrical appliance to work.

[0049] Specifically, in the embodiment of the present application, based on the intelligent power distribution wake-up system provided in the foregoing embodiment, the application wake-up message received by the power management controller is used as the main body to realize the wake-up and sleep of each component. The first wake-up message received by the power management controller, i.e., the application wake-up message, is a message input by the active wake-up controller or an external device, and the external device includes but is not limited to a cloud platform and a remote key. The message is a software application message sent by a specific software program, rather than a CAN network message. Thus, when the power management controller receives the first wake-up message, the message is parsed, and the content therein is analyzed to know which passive wake-up controller or electrical appliance needs to be woken up. Then, the power management controller responds to the message. If the electrical appliance is woken up, the power management controller directly supplies power to the corresponding electrical appliance. If the passive wake-up controller is woken up, the power management controller outputs a wake-up electrical signal to the target passive wake-up controller to make the target passive wake-up controller in the power-off state get power and work. The process does not end after the target passive wake-up controller is woken up. The ultimate goal of the vehicle control is to wake up a certain electrical appliance and make it work (for example, a radar and a camera). Thus, the target passive wake-up controller also sends an application message, i.e., a second wake-up message, to the power management controller. Then, in response to the second wake-up message, a wake-up electrical signal is output to the target electrical appliance controlled by the target passive wake-up controller to make the target electrical appliance wake up and work.

[0050] Through the technical scheme provided in the embodiment of the present application, the active wake-up controller can be in a low-power standby state in the vehicle off state. When it is triggered, it is switched to a high-power state to send an application wake-up message to the power management chip. The power management chip supplies power to the corresponding controller to wake up. After the active wake-up controller successfully sends the wake-up message, it can enter a low-power sleep state and does not need to maintain work. After the passive wake-up controller is woken up, it is the same as the active wake-up controller. The power management chip is still used to wake up the electrical appliance controlled by the passive wake-up controller. If the power management chip does not output a wake-up electrical signal, each electrical appliance and passive wake-up controller does not need to be powered on under the condition of not being used and does not need to be in a low-power state. It can be directly powered off. Thus, through the technical scheme provided in the embodiment of the present application, not only is the development difficulty of the wake-up circuit solved, but also the power consumption of the storage battery is further reduced.

[0051] In some optional embodiments, the intelligent power distribution wake-up method provided in the embodiment of the present application further includes the following steps:

[0052] Step a1, after outputting the wake-up electrical signal to the first target device, detecting the power-on state of the target device, and the first target device being a target electrical appliance or a target passive wake-up controller;

[0053] Step a2, feeding back the power-on state to the second target device, the second target device is the device sending the first wake-up message or the second wake-up message;

[0054] Step a3, receiving the retry wake-up message re-sent by the second target device, and re-outputting the wake-up electrical signal to the first target device in response to the retry wake-up message, the retry wake-up message is a message sent by the second target device when the second target device does not receive the power-on state within a preset time period or the received power-on state indicates that the power-on fails, and the second target device stops sending the retry wake-up message after sending the retry wake-up message for a preset number of times.

[0055] Specifically, in the embodiment of the present application, if the power management controller finds that the power supply of certain devices fails, so that the wake-up of the device fails under the condition of wake-up, the power management chip also feeds back the power-on state to the device sending the wake-up message, if the power-on state indicates that the power-on fails, or the feedback power-on state cannot be received by the second target device for a long time, the embodiment repeatedly sends the wake-up message by the second target device sending the wake-up message, through this scheme, the probability of wake-up failure is reduced, and the reliability of vehicle control is improved. For example: the power management controller receives the power-on request message sent by each active wake-up controller, and powers on the corresponding parts within 5ms (a quantifiable amount, only as an example, not limited to this), and feeds back the power-on result within 10ms (a quantifiable amount, only as an example, not limited to this). If the power management controller does not feed back the power-on state or feeds back that the power-on is unsuccessful within 10ms; the active wake-up controller will continue to request 3 times (a quantifiable amount, only as an example, not limited to this) to request power-on, and if the power-on is unsuccessful, the instrument reports a fault.

[0056] In some optional embodiments, the first wake-up message and the second wake-up message include request information, source identification, sleep flag, wake-up time and power supply interface identification, the request information is used to indicate the identity of the device outputting the wake-up electrical signal, the source identification is used to indicate the identity of the device sending the wake-up message, the sleep flag is used to indicate the sleep mode adopted by the wake-up device, the sleep mode includes automatic sleep and non-automatic sleep, the wake-up time is used to indicate the duration of automatic sleep, and the power supply interface identification is used to indicate the control power supply interface or the normal power supply interface outputting the wake-up electrical signal.

[0057] Specifically, the specific format of the wake-up message provided in the embodiment of the present application is as follows:

[0058] Table 1. Wake-up message format table

[0059]

[0060] As shown in the above table, the wake-up packet provided by the embodiment of the present application mainly includes five contents of request information RequestInfo, source identification SourceID, sleep flag AutoMode, wake-up time Duration and power supply interface identification NetChnArray. The request information is used to indicate the identity of the device outputting the wake-up electrical signal, i.e. which passive wake-up controller and / or consumer the current wake-up packet needs to wake up, so as to query according to the mapping relationship recorded in the request information, so that the power management controller can accurately output the wake-up electrical signal for the target device according to the request information.

[0061] The source identification is used to indicate the identity of the device sending the wake-up packet, and the power management controller can verify whether the device sending the wake-up packet is a legal device specified by the user in advance through the source identification, so as to judge whether the wake-up packet is an illegal message sent by a hacker. If the source identification verification fails, the current wake-up request is rejected, thereby improving the safety of the vehicle wake-up control.

[0062] The sleep flag is used to indicate the sleep mode of the device to be woken up, and the sleep mode includes automatic sleep and non-automatic sleep. If it is automatic sleep, the device to be woken up will automatically enter sleep after the length of the wake-up time. If it is non-automatic sleep, the wake-up time is set to be empty, and the device to be woken up needs to receive a specified sleep signal to enter sleep. For example, in the embodiment, the sleep flag takes values of 0 and 1, 0 indicating automatic and 1 indicating non-automatic. The sleep flag and the wake-up time can further realize the automatic sleep and manual sleep functions of the device to be woken up, and improve the flexibility of the vehicle control.

[0063] The power supply interface identification is used to indicate the control power supply interface or the normal power supply interface that specifically outputs the wake-up electrical signal, so as to ensure the accuracy of the power supply wake-up control. For example, the identification of each interface is shown in the following table.

[0064] Table 2. Power supply interface management table

[0065]

[0066] Based on the above packet structure, in a specific application scenario embodiment, the working process of the power management controller is as follows:

[0067] 1. After the power management controller receives the wake-up packet, the input parameter in the wake-up packet is subjected to value range validity check (for example, checking whether the wake-up time is too long).

[0068] 2. When the check fails, a general error code is returned to the device sending the wake-up packet.

[0069] 3. When the check passes, the calling source SourceID is verified.

[0070] 4. Depending on the value of the AutoMode parameter, the sent wake-up signal adopts two modes: non-automatic sleep wake-up and automatic sleep wake-up.

[0071] a) When AutoMode is 1, it is in automatic sleep mode. The Duration parameter is used as the wake-up duration (in seconds), and the interface that needs power is determined according to NetChnArray.

[0072] b) When AutoMode is 0, it is a non-automatic sleep mode. The interface that needs power is determined according to NetChnArray, and the power is cut off only after receiving the power-off request message from the device that sent the wake-up message.

[0073] This embodiment also provides an intelligent power distribution wake-up method for the aforementioned active wake-up controller. Figure 4 This is a flowchart of a smart power distribution wake-up method according to an embodiment of the present invention, the process including the following steps:

[0074] Step S401: Under a preset low power consumption state, sense whether there is a target to be sensed within a preset range;

[0075] Step S402: When there is a sensed target within the preset range, switch to the preset high power consumption state and send the first wake-up message to the power management controller, so that the power management controller responds to the first wake-up message and outputs a wake-up electrical signal.

[0076] Step S403: Receive the first feedback message sent by the power management controller. The first feedback message indicates that the power management controller has received the first wake-up message.

[0077] Step S404: In response to the first feedback message, switch to the preset low power state.

[0078] Specifically, based on the aforementioned intelligent power distribution wake-up system, this embodiment of the invention enables the active wake-up controller to receive power from the power management controller when the vehicle is off and to be in a low-power standby state. When triggered by an event, the active wake-up controller switches to a high-power state and sends an application wake-up message to the power management chip. The power management chip then supplies power to the corresponding controller to wake it up. After successfully sending the wake-up message, the active wake-up controller can enter a low-power sleep state and does not need to maintain operation. Thus, the technical solution provided by this embodiment of the invention not only solves the development difficulty of the wake-up circuit but also further reduces the power consumption of the battery.

[0079] In addition, in the embodiment, the active wake-up controller not only includes the common active wake-up means, i.e. the network message triggered by other devices, but also has sensing functions, such as infrared sensing, Bluetooth sensing, heat sensing, etc., so that when the target approaches the active wake-up controller (such as a person approaching the active wake-up controller, a remote key approaching the active wake-up controller, etc.), the active wake-up controller is immediately woken up from the low-power state to the high-power state, further improving the flexibility of the active wake-up controller in waking up itself and expanding the application scenarios of the active wake-up controller in waking up itself.

[0080] In some optional embodiments, the intelligent power distribution wake-up method provided by the embodiment of the present application further includes the following steps:

[0081] Step b1, judging whether the preset time moment is reached in the preset low-power state;

[0082] Step b2, when the preset time moment is reached, switching to the preset high-power state and sending a third wake-up message to the power management controller, so that the power management controller outputs a wake-up electrical signal in response to the third wake-up message;

[0083] Step b3, receiving a second feedback message sent by the power management controller, the second feedback message indicating that the power management controller has received the third wake-up message;

[0084] Step b4, switching to the preset low-power state in response to the second feedback message.

[0085] Specifically, the intelligent power distribution wake-up method provided by the embodiment further improves the flexibility of the active wake-up controller in waking up itself and expands the application scenarios of the active wake-up controller in waking up itself according to the timing function of the active wake-up controller. The control logic of the active wake-up controller switching to the preset low-power state is the same as the principles of steps S403-S404 described above, and the relevant description at the corresponding position can be referred to, which will not be repeated here.

[0086] In the embodiment, an intelligent power distribution wake-up device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be repeated here. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware or a combination of software and hardware is also possible and is contemplated.

[0087] The embodiment provides an intelligent power distribution wake-up device, as shown in Figure 5 applied to a power management controller, comprising:

[0088] The first message receiving module 501 is configured to receive a first wake-up message, the first wake-up message being a message sent by the active wake-up controller or a message input by an external device.

[0089] The controller wake-up module 502 is configured to output a wake-up electrical signal to the target passive wake-up controller in response to the first wake-up message, so as to wake up the target passive wake-up controller to work.

[0090] The second message receiving module 503 is configured to receive a second wake-up message sent by the target passive wake-up controller.

[0091] The appliance wake-up module 504 is configured to output a wake-up electrical signal to the target appliance corresponding to the target passive wake-up controller in response to the second wake-up message, so as to wake up the target appliance to work.

[0092] In some optional embodiments, the present embodiment provides an intelligent power distribution wake-up device, which further comprises:

[0093] The power-on state detecting module is configured to detect a power-on state of the target device after the wake-up electrical signal is output to the first target device, the first target device being the target appliance or the target passive wake-up controller.

[0094] The feedback state module is configured to feed back the power-on state to a second target device, the second target device being a device that sends the first wake-up message or the second wake-up message.

[0095] The retry module is configured to receive a retry wake-up message re-sent by the second target device, and re-output the wake-up electrical signal to the first target device in response to the retry wake-up message, the retry wake-up message being a message sent by the second target device when the second target device does not receive the power-on state within a preset time period or when the received power-on state indicates that the power-on fails, and the second target device stops sending the retry wake-up message after sending the retry wake-up message for a preset number of times.

[0096] The present embodiment provides an intelligent power distribution wake-up device, as shown in Figure 6 The present embodiment provides an intelligent power distribution wake-up device, as shown in

[0097] The sensing module 601 is configured to sense whether there is a sensed target within a preset range in a preset low-power-consumption state.

[0098] The first self-wake-up module 602 is configured to switch to a preset high-power-consumption state and send a first wake-up message to a power management controller when there is a sensed target within the preset range, so as to make the power management controller output a wake-up electrical signal in response to the first wake-up message.

[0099] The first notification receiving module 603 is configured to receive a first feedback message sent by the power management controller, the first feedback message indicating that the power management controller has received the first wake-up message.

[0100] The first self-sleeping module 604 is configured to switch to a preset low-power state in response to the first feedback message.

[0101] In some optional embodiments, the present embodiment provides an intelligent power distribution wakeup device, which further comprises:

[0102] The timing determination module is configured to determine whether a preset timing moment is reached in the preset low-power state.

[0103] The second self-wakeup module is configured to switch to a preset high-power state and send a third wakeup message to the power management controller when the preset timing moment is reached, so that the power management controller outputs a wakeup electrical signal in response to the third wakeup message.

[0104] The second notification receiving module is configured to receive a second feedback message sent by the power management controller, and the second feedback message indicates that the power management controller has received the third wakeup message.

[0105] The second self-sleeping module is configured to switch to a preset low-power state in response to the second feedback message.

[0106] Further function descriptions of the above-mentioned modules and units are the same as those of the corresponding embodiments, and will not be described here again.

[0107] The intelligent power distribution wakeup device in the present embodiment is presented in the form of a functional unit, and the unit herein refers to an ASIC (Application Specific Integrated Circuit, special-purpose integrated circuit) circuit, a processor and a memory executing one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0108] The present embodiment further provides a computer-readable storage medium, and the above-mentioned method according to the present embodiment can be implemented in hardware or firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transient machine-readable storage medium and stored in a local storage medium through network downloading of computer code, so that the method described herein can be processed by such software stored on a storage medium using a general-purpose computer, a special-purpose processor or programmable or special-purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk or a solid-state disk, etc. Further, the storage medium can also include a combination of the above-mentioned types of memories. It can be understood that the computer, the processor, the microprocessor controller or the programmable hardware include a storage component that can store or receive software or computer code, and when the software or computer code is accessed and executed by the computer, the processor or the hardware, the method shown in the above-mentioned embodiments is implemented.

[0109] While embodiments of the present application have been described in conjunction with the appended drawings, various modifications and changes can be suggested by persons skilled in the art, and all such modifications and changes are believed to fall within the scope of the present application as defined by the appended claims.

Claims

1. An intelligent power distribution wake-up system, characterized by, The system comprises: a battery, a power management controller, at least one active wake-up controller, at least one passive wake-up controller, and at least one electrical appliance; the battery is electrically connected to the power management controller; the active wake-up controller is a controller that actively wakes up itself in the vehicle off state, and the passive wake-up controller is a controller that works after receiving a wake-up electrical signal in the vehicle off state; the power management controller comprises a control power supply interface and a normal power supply interface, the control power supply interface is used to output a wake-up electrical signal according to the received wake-up message, and the normal power supply interface is used to continuously output an electrical signal; the active wake-up controller is connected to the normal power supply interface, and the passive wake-up controller is connected to the control power supply interface; when the electrical appliance is communicatively connected to the active wake-up controller, the electrical appliance is connected to the normal power supply interface; when the electrical appliance is communicatively connected to the passive wake-up controller, the electrical appliance is connected to the control power supply interface.

2. The intelligent power distribution wake-up system of claim 1, wherein, The electrical appliances and / or passive wake-up controllers that need to be woken up at the same time are connected to the same control power supply interface, or the electrical appliances and / or passive wake-up controllers that need to be woken up at the same time are connected to the same normal power supply interface.

3. The intelligent power distribution wake-up system of claim 1, wherein, The normal power supply interface is an electronic fuse interface, and the control power supply interface is a high-side driver chip interface.

4. An intelligent power distribution wake-up method, characterized in that, The method applied to the power management controller of the intelligent power distribution wake-up system of any one of claims 1-3, the method comprises: receiving a first wake-up message, the first wake-up message being a message sent by an active wake-up controller or a message input by an external device; in response to the first wake-up message, outputting a wake-up electrical signal to a target passive wake-up controller to wake up the target passive wake-up controller to work; receiving a second wake-up message sent by the target passive wake-up controller; in response to the second wake-up message, outputting a wake-up electrical signal to a target electrical appliance controlled by the target passive wake-up controller to wake up the target electrical appliance to work.

5. The method of claim 4, wherein, The method further comprises: after outputting the wake-up electrical signal to a first target device, detecting the power-on state of the target device, the first target device being the target electrical appliance or the target passive wake-up controller; feeding back the power-on state to a second target device, the second target device being a device that sent the first wake-up message or the second wake-up message; receiving a retry wake-up message re-sent by the second target device in response to the retry wake-up message, and re-outputting a wake-up electrical signal to the first target device in response to the retry wake-up message, the retry wake-up message being a message sent by the second target device when the second target device does not receive the power-on state within a preset time period or when the received power-on state indicates that the power-on fails, and the second target device stops sending the retry wake-up message after sending the retry wake-up message for a preset number of times.

6. The method of claim 5, wherein, The first wake-up message and the second wake-up message include request information, source identification, sleep flag, wake-up time and power supply interface identification, the request information is used to represent the device identity outputting the wake-up electrical signal, the source identification is used to represent the device identity sending the wake-up message, the sleep flag is used to represent the sleep mode adopted by the wake-up device, the sleep mode includes automatic sleep and non-automatic sleep, the wake-up time is used to represent the duration of automatic sleep, and the power supply interface identification is used to represent the control power supply interface or the normal power supply interface outputting the wake-up electrical signal.

7. An intelligent power distribution wake-up method, characterized in that, The method applied to the active wake-up controller in the intelligent power distribution wake-up system of any one of claims 1-3, the method comprises: sensing whether there is a sensed target in a preset range in a preset low-power consumption state; when the sensed target exists in the preset range, switching to a preset high-power consumption state and sending a first wake-up message to a power management controller, so that the power management controller outputs a wake-up electrical signal in response to the first wake-up message; receiving a first feedback message sent by the power management controller, the first feedback message indicating that the power management controller has received the first wake-up message; switching to a preset low-power consumption state in response to the first feedback message.

8. The method of claim 7, wherein, The method further comprises: judging whether a preset timing moment is reached in a preset low-power consumption state; when the preset timing moment is reached, switching to a preset high-power consumption state and sending a third wake-up message to a power management controller, so that the power management controller outputs a wake-up electrical signal in response to the third wake-up message; receiving a second feedback message sent by the power management controller, the second feedback message indicating that the power management controller has received the third wake-up message; switching to a preset low-power consumption state in response to the second feedback message.

9. An intelligent power distribution wake-up device, characterized by, The power management controller applied to the intelligent power distribution wake-up system of any one of claims 1-3, the device comprises: a first message receiving module, configured to receive a first wake-up message, the first wake-up message being a message sent by an active wake-up controller or a message input by an external device; a controller wake-up module, configured to output a wake-up electrical signal to a target passive wake-up controller in response to the first wake-up message, so that the target passive wake-up controller wakes up and works; a second message receiving module, configured to receive a second wake-up message sent by the target passive wake-up controller; an appliance wake-up module, configured to output a wake-up electrical signal to a target appliance controlled by the target passive wake-up controller in response to the second wake-up message, so that the target appliance wakes up and works.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium has computer instructions stored thereon, the computer instructions being used to make a computer execute the method of any one of claims 4-6 or 7-8. The computer readable storage medium has computer instructions stored thereon, the computer instructions being used to make a computer execute the method of any one of claims 4-6 or 7-8.

Images