CN117656832A - Intelligent power distribution awakening system, method and device and storage medium - Google Patents
Intelligent power distribution awakening system, method and device and storage medium Download PDFInfo
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- CN117656832A CN117656832A CN202410004383.3A CN202410004383A CN117656832A CN 117656832 A CN117656832 A CN 117656832A CN 202410004383 A CN202410004383 A CN 202410004383A CN 117656832 A CN117656832 A CN 117656832A
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- 230000005059 dormancy Effects 0.000 description 16
- 230000001960 triggered effect Effects 0.000 description 6
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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Abstract
The invention relates to the technical field of automobile control, and discloses an intelligent power distribution awakening system, an intelligent power distribution awakening method, an intelligent power distribution awakening device and a storage medium, wherein the intelligent power distribution awakening system comprises the following components: the system 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 power supply controller comprises a control power supply interface and a constant power supply interface; 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; when the electric appliance is in communication connection with the active wake-up controller, the electric appliance is connected with a constant power supply interface; 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 invention reduces the development cost of the wake-up circuit and further reduces the power consumption of the storage battery.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to an intelligent power distribution awakening system, an intelligent power distribution awakening method, an intelligent power distribution awakening device and a storage medium.
Background
At present, the awakening and dormancy operation of each element of the electric automobile is controlled through CAN network management, each sensor, controller and other elements are connected with a power supply and are in a low-power-consumption dormancy state, when certain sensors work, a main controller CAN send CAN messages to awaken the sensors or sub-controllers of corresponding network segments, the dormancy circuit needs to develop CAN network management functions, the CAN network management development period is longer, the cost is higher, the application of the CAN network management is more complicated when the CAN network management is adapted to the whole automobile function, and the awakening condition of the whole automobile network completely depends on interaction between the vehicle-mounted main controller and each functional element of the whole automobile to realize awakening dormancy logic, so that the whole automobile storage battery is more.
Disclosure of Invention
In view of the above, the present invention provides an intelligent power distribution wake-up system, method, apparatus and storage medium to solve the problem of power consumption of the current wake-up circuit.
In a first aspect, the present invention provides an intelligent power distribution wake-up system, which is characterized by comprising: the system 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 which actively wakes up the vehicle to work under the flameout state of the vehicle, and the passive wake-up controller is a controller which works after receiving a wake-up electric signal under the flameout state of the vehicle; the power supply controller comprises a control power supply interface and a constant power supply interface, the control power supply interface is used for outputting a wake-up electric signal according to a received wake-up message, and the constant power supply interface is used for continuously outputting the electric signal; 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; when the electric appliance is in communication connection with the active wake-up controller, the electric appliance is connected with a constant power supply interface; 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.
According to the technical means, the CAN network management function is directly canceled, the active wake-up controller and the passive wake-up controller are both directly connected to the power management chip, and two types of interfaces are provided for the power management chip, one type is a normal power supply interface, the other type is a control power supply interface, and power is supplied only under the condition of control on. The active wake-up controller is in a low-power consumption standby state in a vehicle flameout state, and is switched to a high-power consumption state when triggered to send an application wake-up message to the power management chip, the power management chip supplies power to the corresponding controller for wake-up, the active wake-up controller can enter the low-power consumption sleep state after successful sending of the wake-up message, and the work is not required to be maintained.
In an alternative embodiment, the appliances that need to wake up simultaneously are connected to the same control power interface or the same constant power interface.
According to the technical means, the parts which need to be dormant and awakened together are subjected to one-path power distribution, power supply is performed, namely, awakening work is performed, power failure is stopped, the same group of parts are simultaneously dormant and awakened, the work coordination degree and the work efficiency of the parts are further improved, and the occupation of a power supply interface of a power supply management chip is reduced.
In an alternative embodiment, the constant power interface is an electronic fuse interface and the control power interface is a high-end driver chip interface.
According to the technical means, the control power supply interface is configured as the high-end driving chip interface, the flexibility and the accuracy of interface control are improved by utilizing the programming control logic, the normal power supply interface is configured as the electronic fuse interface, and the safety of the normal power supply interface can be provided by combining the voltage protection function of the normal power supply interface.
In a second aspect, the present invention provides an intelligent power distribution wake-up method, applied to a power management controller, the method comprising: receiving a first awakening message, wherein the first awakening message is a message sent by an active awakening controller or a message input by external equipment; responding to the first awakening message, outputting an awakening electric signal to the target passive awakening controller, and enabling the target passive awakening controller to awaken to work; receiving a second wake-up message sent by a target passive wake-up controller; and responding to the second awakening message, outputting an awakening electric signal to the target electric appliance correspondingly controlled by the target passive awakening controller, so that the target electric appliance is awakened to work.
According to the technical means, the active wake-up controller can be in a low-power consumption standby state in a vehicle flameout state, and is switched to a high-power consumption state when triggered to send an application wake-up message to the power management chip, the power management chip supplies power to the corresponding controller for wake-up, and the active wake-up controller can enter the low-power consumption sleep state after the wake-up message is sent successfully, so that the work is not required to be maintained. The passive wake-up controller is similar to the active wake-up controller after being waken up, and the power management chip is still adopted to wake up the corresponding controlled electric appliances, so that the electric appliances and the passive wake-up controller do not need to be powered on normally under the condition of not being used, do not need to be in a low power consumption state, and can be powered off directly. Therefore, by the technical scheme provided by the embodiment of the invention, the development difficulty of the wake-up circuit is solved, and the electricity consumption of the storage battery is further reduced.
In an alternative embodiment, the method further comprises: after outputting a wake-up electric signal to a first target device, detecting a power-on state of the target device, wherein the first target device is a target electric appliance or a target passive wake-up controller; feeding back the power-on state to a second target device, wherein the second target device is a device which sends a first wake-up message or a second wake-up message; and receiving a retry wakeup message which is sent by the second target device again, and outputting a wakeup electric signal to the first target device again in response to the retry wakeup message, wherein the retry wakeup message is a message sent by the second target device when the second target device does not receive a power-on state or the received power-on state indicates power-on failure within a preset time period, and the second target device stops sending the retry wakeup message after sending the retry wakeup message for a preset number of times.
According to the technical means, under the condition that the awakened equipment fails to awaken, the power management chip also feeds back the power-on state to the equipment sending the awakening message, so that the equipment sending the awakening message repeatedly sends the awakening message for a plurality of times, the probability of awakening failure is reduced, and the reliability of overall vehicle control is improved.
In an alternative implementation manner, the first wake-up message and the second wake-up message include request information, source identification, a sleep flag, a wake-up time and a power supply interface identification, the request information is used for indicating an equipment identity outputting a wake-up electric signal, the source identification is used for indicating an equipment identity sending the wake-up message, the sleep flag is used for indicating a sleep mode adopted by the wake-up equipment, the sleep mode includes automatic sleep and non-automatic sleep, the wake-up time is used for indicating a duration of the automatic sleep, and the power supply interface identification is used for indicating a control power supply interface or a constant power supply interface for specifically outputting the wake-up electric signal.
According to the technical means, the wake-up message can judge whether the equipment sending the wake-up message is legal equipment or not through the source identification, so that the whole vehicle control disorder caused by hacker invasion is avoided, the automatic dormancy and manual dormancy functions of the awakened equipment can be further realized through the dormancy mark and the awakening time, and the flexibility of whole vehicle control is improved.
In a third aspect, the present invention 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 consumption state; when an induced target exists in a preset range, switching to a preset high-power consumption state and sending a first wake-up message to the power management controller, so that the power management controller responds to the first wake-up message to output a wake-up electric signal; receiving a first feedback message sent by the power management controller, wherein the first feedback message indicates that the power management controller has received a first wake-up message; and responding to the first feedback message to switch to a preset low-power consumption state.
In an alternative embodiment, the method further comprises: judging whether a preset timing moment is reached or not in a preset low power consumption state; when reaching the preset timing moment, switching to a preset high-power consumption state and sending a third awakening message to the power management controller so that the power management controller responds to the third awakening message to output an awakening electric signal; receiving a second feedback message sent by the power management controller, wherein the second feedback message indicates that the power management controller has received a third wakeup message; and responding to the second feedback message to switch to a preset low-power consumption state.
According to the technical means, the active wake-up controller can be in a low-power consumption standby state in a vehicle flameout state, and is switched to a high-power consumption state when triggered to send an application wake-up message to the power management chip, the power management chip supplies power to the corresponding controller for wake-up, and the active wake-up controller can enter the low-power consumption sleep state after the wake-up message is sent successfully, so that the work is not required to be maintained. Therefore, by the technical scheme provided by the embodiment of the invention, the development difficulty of the wake-up circuit is solved, and the electricity consumption of the storage battery is further reduced.
In a fourth aspect, the present invention provides an intelligent power distribution wake-up device, applied to a power management controller, the device comprising: the first message receiving module is used for receiving a first awakening message, wherein the first awakening message is a message sent by the active awakening controller or a message input by external equipment; the controller wake-up module is used for responding to the first wake-up message, outputting a wake-up electric signal to the target passive wake-up controller, and enabling the target passive wake-up controller to wake up; the second message receiving module is used for receiving a second awakening message sent by the target passive awakening controller; and the electric appliance awakening module is used for responding to the second awakening message and outputting an awakening electric signal to the target electric appliance correspondingly controlled by the target passive awakening controller so as to awaken the target electric appliance to work.
In a fifth aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of the first aspect or any of its corresponding embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a wake-up circuit of the related art;
FIG. 2 is a schematic diagram of an intelligent power distribution wake-up system according to an embodiment of the present invention;
FIG. 3 is a flow chart of an intelligent power distribution wake-up method according to an embodiment of the present invention;
FIG. 4 is another flow diagram of an intelligent power distribution wake-up method according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an intelligent power distribution wake-up unit according to an embodiment of the present invention;
Fig. 6 is another schematic structural diagram of an intelligent power distribution wake-up unit according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Currently, network management of vehicles is one of the important applications of CAN (Controller Area Network ) buses. Generally, an ECU (Electronic Control Unit ) in each functional system of a vehicle is built into a CAN network based on a CAN bus, and network management of the vehicle is mainly to manage node dormancy and wakeup taking each ECU as a node. When the nodes of the CAN network are in a dormant state, the electric energy consumption of the vehicle-mounted storage battery CAN be effectively reduced, so that the vehicle-mounted storage battery CAN have longer standby time.
For example, OSEK (open systems and the corresponding interfaces for automotive electronics, automotive electronics open systems and corresponding interface standards) is a commonly used CAN network management mechanism with the following synchronization characteristics: for each node in the same CAN network, all nodes CAN enter a dormant state at the same time only when the last node in the CAN network does not execute a network request or a local function, and when at least one node needs to execute the network request or the local function, the rest nodes in the CAN network enter a wake-up state from the dormant state. This method still CAN make some nodes not participating in work in a wake-up state, so that the electric quantity of the storage battery is wasted, and therefore, the wake-up circuit and the CAN network management function are improved more or less by the related technology.
For example, as shown in fig. 1, a wake-up circuit is an improvement of the related art, in which the first node is an active wake-up node, that is, the node can wake up itself and start to operate automatically at a specific time; the second node, the third node and the fourth node are all passive awakening nodes, and only the signals of the first node CAN be awakened, and the second node and the third node CAN do other work in the background under certain scenes, so that the second node and the third node are connected with a switch control line (an ON line in fig. 1) and an anode line (a B+ line in fig. 1) of a vehicle while being connected with a CAN network like the first node; 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 in a flameout state, the first node, the second node and the third node are all nodes which are normally powered by the power supply, and the three nodes are 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, the first node is waken up by the CAN message sent by the first node, so that the first node is converted into the high power consumption state. If the fourth node needs to work, because the fourth node is not connected with the B+ line, the first node sends a CAN message to the fourth node and CAN not wake up the CAN message, the first node CAN supply power to the fourth node and wake up the fourth node by outputting current through a power out terminal, and if the work of the fourth node is not finished, the first node CAN wait for the work of the fourth node to be finished so as to be capable of switching from a high-power-consumption state to a low-power-consumption state and cut off the output of the power out terminal. Therefore, the improved circuit provided by the related art still has the problem of wasting the electric energy of the storage battery to a certain extent, and based on the improved circuit, the embodiment of the invention provides the following technical scheme to further reduce the power consumption of the storage battery.
According to an embodiment of the present invention, there is provided an intelligent power distribution wake-up system, as shown in fig. 2, including: the system 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 which actively wakes up the vehicle to work under the flameout state of the vehicle, and the passive wake-up controller is a controller which works after receiving a wake-up electric signal under the flameout state of the vehicle; the power supply controller comprises a control power supply interface and a constant power supply interface, the control power supply interface is used for outputting a wake-up electric signal according to a received wake-up message, and the constant power supply interface is used for continuously outputting the electric signal; 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; when the electric appliance is in communication connection with the active wake-up controller, the electric appliance is connected with a constant power supply interface; 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.
Specifically, the wake-up circuit system provided by the embodiment of the invention directly removes the CAN network management function, and realizes the wake-up and dormancy of other controllers and electric appliances by receiving and transmitting application messages through the power management controller, thereby reducing the research and development difficulty and further reducing the electric energy loss of the storage battery.
The power management controller is a programmable switch module applied to a control system, can be used for controlling output current to each controller and electric appliances, can regulate the output current and the output voltage besides controlling the output of the current, and realizes the function of DC-DC conversion, and the electric energy source of the power controller is a storage battery in a vehicle. In the embodiment of the invention, two types of output interfaces are configured for the power supply controller, one type is a control power supply interface, the other type is a constant power supply interface, wherein the control power supply interface is completely controlled by the power supply management controller and can be opened and closed at any time, and the constant power supply interface continuously outputs stable voltage and current and cannot be powered off due to dormancy of the power supply management controller.
Based on this, according to the use scenes of various controllers on the vehicle, the embodiments define the various controllers as two types, one type is an active wake-up controller, and the active wake-up controller is a controller capable of actively waking up itself to work in a flameout state of the vehicle, for example, capable of actively waking up itself to start to work at a specific timing time; the other type is a passive wake-up controller, which is a controller that works after receiving a wake-up electric signal in a vehicle flameout state. It should be noted that, in the embodiment of the present invention, the wake-up signal received by the passive wake-up controller may be a signal sent by the active wake-up controller, or may be a signal sent by an external device such as a cloud platform, a remote key, or the like.
Based on the above, 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; meanwhile, according to the electric appliance objects (such as a radar, a camera, a car lamp, a screen and the like) controlled by each controller, if one electric appliance is controlled by the active wake-up controller, the electric appliance is also connected with the constant power supply interface, and similarly, if one electric appliance is controlled by the passive wake-up controller, the electric appliance is also connected with the control power supply interface.
In addition, in the embodiment, the active wake-up controller, the passive wake-up controller and the electric appliances are connected through the CAN network, but the active wake-up controller and the passive wake-up controller execute the specific electric appliance control function and the data acquisition function only through the CAN network, and do not utilize CAN messages to perform the wake-up function, so that the CAN network has no effect in the wake-up circuit and is not reflected in fig. 2.
Based on the wake-up system provided by the embodiment, when the vehicle is in a flameout state, the power management chip supplies power to the active wake-up controller, the active wake-up controller can be in a low-power consumption standby state, and when the active wake-up controller is actively waken by a trigger event, the active wake-up controller is switched to be in a high-power consumption state. After the active wake-up controller is converted into a high-power consumption state, the CAN message is not directly sent to each passive wake-up controller and the electric appliance, but an application wake-up message (for requesting power supply) is sent to the power management chip, and the power management chip responds to the received application wake-up message, distributes the software module and executes the software module to supply power to the corresponding passive wake-up controller or the electric appliance through wake-up electric signals to wake-up. After the active wake-up controller sends the application wake-up message successfully, the active wake-up controller can immediately enter a low-power-consumption sleep state without maintaining work, the subsequent power supply work is completed by the power management controller, and the power consumption is reduced. And the passive wake-up controller connected to the control power supply interface is unpowered, and is not required to receive the CAN wake-up message, so that the passive wake-up controller is not required to be in a low-power-consumption state for dormancy before being woken up, and the passive wake-up controller is powered off directly. Therefore, through the technical scheme provided by the embodiment of the invention, the CAN network management function is eliminated, the development difficulty of the wake-up circuit is reduced, and the electricity consumption of the storage battery is further reduced.
In some optional implementations, the intelligent power distribution wake-up system provided by the embodiment of the invention also connects the electric appliances needing to wake-up simultaneously to the same control power supply interface or the same constant power supply interface.
Specifically, the embodiment of the invention also divides the parts which need to be dormant and awakened together into a group for one-way power distribution, so that the power supply of the parts is awakened, the power supply is stopped when the power supply is interrupted, the same group of parts are asleep and awake simultaneously, thereby further improving the work coordination degree and the work efficiency of the parts and reducing the occupation of the power supply interface of the power supply management chip. For example: a vehicle has a plurality of radar cameras which are installed at different positions, but need to work simultaneously, and the plurality of radar cameras can be connected to the same control power supply interface or constant power supply interface.
In some alternative embodiments, the constant power interface is an electronic fuse interface and the control power interface is a high-end driver chip interface.
Specifically, eFuses (electronic fuses) are programmable electronic fuses that may be used to prevent damage to a circuit from over-voltages or over-currents, and may also be used to prevent tampering, cracking, etc. Based on the above, the embodiment of the invention adopts the electronic fuse interface to configure the normal power supply interface, so that the protection function can be realized by timely power off under the conditions of overvoltage, overcurrent and the like during the period that the normal power supply interface is kept open by the power management controller, and a hacker can be placed in the vehicle through the normal power supply interface to a certain extent, thereby improving the safety of the whole vehicle control. In addition, the embodiment of the invention adopts a High-side Driver (HSD) chip interface as a control power supply interface, and the on-off of the current flowing from the positive electrode of the power supply is flexibly controlled through the chip, so that the flexibility of the wake-up control of the whole vehicle is further improved.
In accordance with an embodiment of the present invention, there is also provided an intelligent power distribution wake-up method embodiment, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than what is illustrated herein.
In this embodiment, an intelligent power distribution wake-up method is provided, which may be used in the above power management controller, and fig. 3 is a flowchart of an intelligent power distribution wake-up method according to an embodiment of the present invention, where the flowchart includes the following steps:
step S101, a first awakening message is received, wherein the first awakening message is a message sent by an active awakening controller or a message input by external equipment;
step S102, responding to a first awakening message, outputting an awakening electric signal to a target passive awakening controller, and enabling the target passive awakening controller to awaken;
step S103, receiving a second wake-up message sent by the target passive wake-up controller;
and step S104, responding to the second awakening message, outputting an awakening electric signal to the target electric appliance correspondingly controlled by the target passive awakening controller, and enabling the target electric appliance to awaken.
Specifically, in the embodiment of the present invention, based on the intelligent power distribution wake-up system provided in the foregoing embodiment, the embodiment uses the application wake-up message received by the power management controller as a main body to implement wake-up and sleep of each component. The first wake-up message, i.e. the application wake-up message, received by the power management controller is a message input through 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, where the message is a software application message sent by a specific software program, and is not a CAN network message. Therefore, after the power management controller receives the first awakening message, the message is analyzed, the content in the message is analyzed, and the passive awakening controller or the electric appliance needs to be awakened. And then the power management controller responds to the message, if the electric appliance is awakened, the power management controller directly supplies power to the corresponding electric appliance, and if the electric appliance is awakened, the power management controller outputs an awakening electric signal to the target passive awakening controller so that the target passive awakening controller in a power-off state is powered on and works. The process of the target passive wake-up controller after being awakened is not finished, the final purpose of the whole vehicle control is to wake up a certain electric appliance and enable the electric appliance to perform actual work (such as a radar and a camera), so that the target passive wake-up controller can send an application message, namely a second wake-up message, to the power management controller, and then respond to the second wake-up message to output a wake-up electric signal to the target electric appliance correspondingly controlled by the target passive wake-up controller, so that the target electric appliance wakes up.
According to the technical scheme provided by the embodiment of the invention, the active wake-up controller can be in a low-power consumption standby state in the vehicle flameout state, and is switched to a high-power consumption state when triggered to send an application wake-up message to the power management chip, the power management chip supplies power to the corresponding controller for wake-up, and the active wake-up controller can enter the low-power consumption sleep state after successful sending of the wake-up message without maintaining work. The passive wake-up controller is similar to the active wake-up controller after being waken up, the power management chip is still adopted to wake up the corresponding controlled electric appliances, and if the power management chip does not send out wake-up electric signals, the electric appliances and the passive wake-up controller do not need to be always powered under the condition of not being used, do not need to be in a low power consumption state, and can be powered off directly. Therefore, by the technical scheme provided by the embodiment of the invention, the development difficulty of the wake-up circuit is solved, and the electricity consumption of the storage battery is further reduced.
In some optional implementations, the method for waking up intelligent power distribution provided by the embodiment of the invention further includes the following steps:
step a1, after outputting a wake-up electric signal to a first target device, detecting a power-on state of the target device, wherein the first target device is a target electric appliance or a target passive wake-up controller;
Step a2, feeding back the power-on state to a second target device, wherein the second target device is a device which sends a first wake-up message or a second wake-up message;
and a step a3 of receiving a retry wakeup message sent again by the second target device, and re-outputting a wakeup electric signal to the first target device in response to the retry wakeup message, wherein the retry wakeup message is a message sent by the second target device when the second target device does not receive a power-on state or the received power-on state indicates power-on failure within a preset time period, and the second target device stops sending the retry wakeup message after sending the retry wakeup message for a preset number of times.
Specifically, in the embodiment of the invention, if the power management controller finds that some equipment fails to supply power, and therefore, under the condition that the awakened equipment fails to awaken, the power management chip also feeds back the power-on state to the equipment sending the awakening message, and if the power-on state indicates that the power-on fails, or the fed-back power-on state cannot be received by the second target equipment at a later time, the second target equipment sending the awakening message repeatedly sends the awakening message for a plurality of times. For example: the power management controller receives the power-on request message sent by each active wake-up controller, powers on the corresponding parts in 5ms (the scalable amount is only used as an example and not limited by the limitation), and feeds back the power-on result in 10ms (the scalable amount is only used as an example and not limited by the limitation). If the power management controller does not feed back the power-on state for 10ms or feeds back that the power-on is unsuccessful; the active wake-up controller will continue to request 3 times (by way of example only, and not by way of limitation) that the power-up request was unsuccessful, and the meter will report the fault.
In some optional embodiments, 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, where the request information is used to indicate an identity of a device outputting a wake-up electric signal, the source identifier is used to indicate an identity of a device sending the wake-up message, the sleep flag is used to indicate a 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 a duration of the automatic sleep, and the power supply interface identifier is used to indicate a control power supply interface or a constant power supply interface that specifically outputs the wake-up electric signal.
Specifically, the specific format of the wake-up message provided by the embodiment of the invention is as follows:
TABLE 1 Wake-up message Format Table
As shown in the table above, the wake-up message provided by the embodiment of the invention mainly includes five contents including request information RequestInfo, source identifier SourceID, sleep identifier AutoMode, wake-up time Duration and power supply interface identifier NetChunArray. The request information is used for indicating the identity of the device outputting the wake-up electric signal, namely which passive wake-up controller and/or electric appliance needs to be woken up by the current wake-up message, so that the power management controller can accurately output the wake-up electric signal for the target device according to the request information.
The source identifier is used for indicating the identity of the equipment sending the wake-up message, and the power management controller can verify whether the equipment sending the wake-up message is legal equipment preset by a user through the source identifier, so that whether the wake-up message is an illegal message sent by a hacker is judged, and if the source identifier is not verified, the wake-up request is refused, so that the safety of the whole vehicle wake-up control is improved.
The sleep flag is used to indicate sleep modes adopted by the awakened device, where the sleep modes include automatic sleep and non-automatic sleep, if the sleep mode is automatic sleep, the awakened device will automatically enter sleep after the length of the awakening time passes, if the sleep mode is non-automatic sleep, the awakening time is set to be empty, and the awakened device needs to receive a specified sleep signal to enter sleep, for example, in this embodiment, the values of the sleep flag are 0 and 1,0 indicate automatic, and 1 indicates non-automatic. The over-dormancy mark and the awakening time can further realize the automatic dormancy and manual dormancy functions of awakened equipment, and improve the flexibility of whole vehicle control.
The power supply interface identifier is used for indicating a control power supply interface or a constant power supply interface which specifically outputs a wake-up electric signal, so that the accuracy of power supply wake-up control is ensured, for example, the identifiers of the interfaces are shown in the following table.
TABLE 2 Power interface management Table
Based on the above message structure, in one embodiment of the application scenario, the workflow of the power management controller is as follows:
1. after the power management controller receives the wake-up message, the validity of the value range of the input parameter in the wake-up message is checked (for example, whether the wake-up time is too long is checked).
2. And when the verification fails, returning a universal error code to the equipment sending the wake-up message.
3. When the verification passes, the call source SourceID is verified.
4. According to the difference of AutoMode parameter values, the transmitted wake-up electric signal adopts 2 modes of non-automatic dormancy wake-up and automatic dormancy wake-up.
a) The AutoMode is an auto sleep mode when 1, and the Duration parameter is set as the wake-up Duration (unit: second) determines the interface that needs power based on netchnarry.
b) When AutoMode is 0, the device is in a non-automatic dormancy mode, an interface needing power supply is determined according to NetChunARRAy, and power is cut off after a power-off request message of awakening message equipment is obtained.
In this embodiment, an intelligent power distribution wake-up method is further provided, which is used for the active wake-up controller, and fig. 4 is a flowchart of an intelligent power distribution wake-up method according to an embodiment of the present invention, where the flowchart includes the following steps:
Step S401, sensing whether a sensed target exists in a preset range in a preset low power consumption state;
step S402, when an induced target exists in a preset range, switching to a preset high-power consumption state and sending a first wake-up message to the power management controller so that the power management controller responds to the first wake-up message to output a wake-up electric signal;
step S403, receiving a first feedback message sent by the power management controller, wherein the first feedback message indicates that the power management controller has received a first wake-up message;
step S404, switching to a preset low power consumption state in response to the first feedback message.
Specifically, based on the intelligent power distribution awakening system, the embodiment of the invention enables the active awakening controller to receive the power supply of the power management controller in the flameout state of the vehicle and to be in a low-power consumption standby state, when the active awakening controller is triggered by a trigger event, the active awakening controller is switched to a high-power consumption state and sends an application awakening message to the power management chip, the power management chip supplies power to the corresponding controller for awakening, and the active awakening controller can enter the low-power consumption sleep state after the awakening message is successfully sent, so that the work is not required to be maintained. Therefore, by the technical scheme provided by the embodiment of the invention, the development difficulty of the wake-up circuit is solved, and the electricity consumption of the storage battery is further reduced.
In addition, in this embodiment, the active wake-up controller includes not only a common active wake-up means, i.e. can be triggered by network messages sent by other devices, but also has sensing functions, such as infrared sensing, bluetooth sensing, and heat sensing, so that when a target approaches the active wake-up controller (e.g. a person approaches the active wake-up controller, a chip item such as a remote key approaches the active wake-up controller, etc.), the active wake-up controller wakes up itself immediately, and switches from a low-power state to a high-power state, thereby further improving flexibility of the active wake-up controller to wake up itself, and expanding application scenarios of the active wake-up controller to wake up itself.
In some optional implementations, a flowchart of an intelligent power distribution wake-up method provided by the embodiment of the present invention further includes the following steps:
step b1, judging whether a preset timing moment is reached or not in a preset low-power consumption state;
step b2, when reaching the preset timing moment, switching to a preset high-power consumption state and sending a third wake-up message to the power management controller so that the power management controller responds to the third wake-up message to output a wake-up electric signal;
Step b3, receiving a second feedback message sent by the power management controller, wherein the second feedback message indicates that the power management controller has received a third wakeup message;
and b4, responding to the second feedback message and switching to a preset low-power consumption state.
Specifically, the intelligent power distribution awakening method provided by the embodiment enables the active awakening controller to actively power up according to the timing function of the active awakening controller, so that the flexibility of the active awakening controller to awaken the intelligent power distribution awakening method is further improved, and the application scene of the active awakening controller to awaken the intelligent power distribution awakening method is expanded. The control logic for switching the active wake-up controller to the preset low power consumption state is the same as the principle of the steps S403 to S404, and the description of the corresponding positions may be referred to, which is not repeated herein.
In this embodiment, an intelligent power distribution wake-up device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and will not be described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The embodiment provides an intelligent power distribution wake-up device, as shown in fig. 5, which is applied to a power management controller, and includes:
the first message receiving module 501 is configured to receive a first wake-up message, where the first wake-up message is a message sent by the active wake-up controller or a message input by an external device;
the controller wake-up module 502 is configured to respond to the first wake-up message, and output a wake-up electric signal to the target passive wake-up controller, so that the target passive wake-up controller wakes up to work;
a second message receiving module 503, configured to receive a second wake-up message sent by the target passive wake-up controller;
and the electric appliance wake-up module 504 is configured to respond to the second wake-up message, and output a wake-up electric signal to the target electric appliance correspondingly controlled by the target passive wake-up controller, so that the target electric appliance wakes up to work.
In some optional implementations, the present embodiment provides an intelligent power distribution wake-up device, further including:
the power-on state detection module is used for detecting the power-on state of target equipment after outputting a wake-up electric signal to the first target equipment, wherein the first target equipment is a target electric appliance or a target passive wake-up controller;
the feedback state module is used for feeding back the power-on state to second target equipment, and the second target equipment is equipment which sends a first awakening message or a second awakening message;
The retry module is configured to receive a retry wakeup message sent by the second target device again, and respond to the retry wakeup message to re-output a wakeup electric signal to the first target device, where the retry wakeup message is a message sent by the second target device when the second target device does not receive a power-on state or the received power-on state indicates that the power-on fails within a preset time period, and the second target device stops sending the retry wakeup message after sending the retry wakeup message for a preset number of times.
The embodiment provides an intelligent power distribution wake-up device, as shown in fig. 6, which is applied to an active wake-up controller and includes:
the sensing module 601 is configured to sense whether a sensed target exists in a preset range in a preset low power consumption state;
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 the 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;
the first notification receiving module 603 is configured to receive a first feedback message sent by the power management controller, where the first feedback message indicates that the power management controller has received a first wake-up message;
The first self-dormancy module 604 is configured to switch to a preset low power consumption state in response to the first feedback message.
In some optional implementations, the present embodiment provides an intelligent power distribution wake-up device, further including:
the timing judging module is used for judging whether the preset timing moment is reached in a preset low-power consumption state;
the second self-waking module is used for switching to a preset high-power consumption state and sending a third waking message to the power management controller when reaching a preset timing moment so that the power management controller responds to the third waking message to output a waking electric signal;
the second notification receiving module is used for receiving a second feedback message sent by the power management controller, wherein the second feedback message indicates that the power management controller has received a third wakeup message;
and the second self-dormancy module responds to the second feedback message and switches to a preset low-power consumption state.
Further functional descriptions of the above respective modules and units are the same as those of the above corresponding embodiments, and are not repeated here.
The intelligent power distribution wake-up unit in this embodiment is presented in the form of functional units, herein referred to as ASIC (Application Specific Integrated Circuit ) circuits, processors and memories executing one or more software or firmware programs, and/or other devices that can provide the above described functionality.
The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process 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, a solid state disk or the like; further, the storage medium may also comprise a combination of memories of the kind described above. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. An intelligent power distribution wake-up system, comprising: the system 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 which actively wakes up the vehicle to work under the flameout state of the vehicle, and the passive wake-up controller is a controller which works after receiving a wake-up electric signal under the flameout state of the vehicle;
the power supply controller comprises a control power supply interface and a constant power supply interface, wherein the control power supply interface is used for outputting a wake-up electric signal according to a received wake-up message, and the constant power supply interface is used for continuously outputting the electric signal;
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; when the electric appliance is in communication connection with the active wake-up controller, the electric appliance is connected with the constant power supply interface; 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.
2. The intelligent power distribution wake-up system according to claim 1, wherein the electrical appliances and/or passive wake-up controllers that need to wake up simultaneously are connected to the same said control power supply interface, or the electrical appliances and/or passive wake-up controllers that need to wake up simultaneously are connected to the same said constant power supply interface.
3. The intelligent power distribution wake-up system of claim 1 wherein the constant power interface is an electronic fuse interface and the control power interface is a high-end driver chip interface.
4. An intelligent power distribution wake-up method, applied to a power management controller, comprising:
receiving a first awakening message, wherein the first awakening message is a message sent by an active awakening controller or a message input by external equipment;
responding to the first awakening message, outputting an awakening electric signal to a target passive awakening controller, and enabling the target passive awakening controller to awaken to work;
receiving a second wake-up message sent by the target passive wake-up controller;
and responding to the second awakening message, outputting an awakening electric signal to a target electric appliance correspondingly controlled by the target passive awakening controller, so that the target electric appliance awakens to work.
5. The method according to claim 4, wherein the method further comprises:
detecting a power-on state of the target device after outputting the wake-up electric signal to a first target device, wherein the first target device is the target electric appliance or the target passive wake-up controller;
Feeding back the power-on state to a second target device, wherein the second target device is a device which sends the first wake-up message or the second wake-up message;
and receiving a retry wakeup message which is sent by the second target device again, and re-outputting a wakeup electric signal to the first target device in response to the retry wakeup message, wherein the retry wakeup message is a message sent by the second target device when the second target device does not receive the power-on state or the power-on state received indicates power-on failure within a preset time period, and the second target device stops sending the retry wakeup message after sending the retry wakeup message for a preset times.
6. The method of claim 5, wherein 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, wherein the request information is used for indicating an identity of a device outputting a wake-up electric signal, the source identifier is used for indicating an identity of a device sending the wake-up message, the sleep flag is used for indicating a sleep mode adopted by the awakened device, the sleep mode includes automatic sleep and non-automatic sleep, the wake-up time is used for indicating a duration of the automatic sleep, and the power supply interface identifier is used for indicating a control power supply interface or a constant power supply interface for specifically outputting the wake-up electric signal.
7. An intelligent power distribution awakening method, which is applied to an active awakening controller, and comprises the following steps of:
sensing whether a sensed target exists 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 awakening message to a power management controller, so that the power management controller responds to the first awakening message to output an awakening electric signal;
receiving a first feedback message sent by the power management controller, wherein the first feedback message indicates that the power management controller has received the first wakeup message;
and responding to the first feedback message to switch to a preset low-power consumption state.
8. The method of claim 7, wherein the method further comprises:
judging whether a preset timing moment is reached or not 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 awakening message to a power management controller, so that the power management controller responds to the third awakening message to output an awakening electric signal;
receiving a second feedback message sent by the power management controller, wherein the second feedback message indicates that the power management controller has received the third wakeup message;
And responding to the second feedback message to switch to a preset low-power consumption state.
9. An intelligent power distribution wake-up device, for use with a power management controller, the device comprising:
the first message receiving module is used for receiving a first awakening message, wherein the first awakening message is a message sent by the active awakening controller or a message input by external equipment;
the controller wake-up module is used for responding to the first wake-up message and outputting a wake-up electric signal to a target passive wake-up controller so that the target passive wake-up controller wakes up to work;
the second message receiving module is used for receiving a second awakening message sent by the target passive awakening controller;
and the electric appliance awakening module is used for responding to the second awakening message and outputting an awakening electric signal to the target electric appliance correspondingly controlled by the target passive awakening controller so as to awaken the target electric appliance.
10. A computer readable storage medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 4 to 6 or 7 to 8.
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