CN114779751A - Closed-loop whole vehicle electricity-return monitoring method and system - Google Patents
Closed-loop whole vehicle electricity-return monitoring method and system Download PDFInfo
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- CN114779751A CN114779751A CN202210732334.2A CN202210732334A CN114779751A CN 114779751 A CN114779751 A CN 114779751A CN 202210732334 A CN202210732334 A CN 202210732334A CN 114779751 A CN114779751 A CN 114779751A
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- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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Abstract
The invention discloses a closed-loop whole vehicle power-off monitoring method and a closed-loop whole vehicle power-off monitoring system, wherein the method comprises the following steps: after receiving the power-off request signal, sending a power-off pre-indication signal to each corresponding ECU so as to facilitate data storage of each ECU; after receiving a dormancy preparation completion signal fed back by each ECU after data storage is completed, sequentially sending a power-off command to each fed back ECU, and controlling power-off processing of each fed back ECU; and monitoring port opening and closing signals and port current of the ECU in the power-off processing process, comparing and determining whether port faults exist, and sending the detected port opening and closing state signals and port fault signals to the whole vehicle network. By implementing the invention, the closed loop monitoring of the entire vehicle power-off can be realized, the on-off/fault state of each power supply driving port can be monitored and fed back in real time, and the reliability and the safety of the vehicle power-off process are improved.
Description
Technical Field
The invention relates to the technical field of low-voltage vehicle power-off, in particular to a closed-loop vehicle power-off monitoring method and system.
Background
With the continuous promotion of the electromotion, the intellectualization, the networking and the sharing of the automobile, more and more new technologies and new products come into play. The intelligent power distribution system can perform intelligent management on low-voltage power supply of all electric equipment, can enable the whole vehicle to be more flexible in power on and power off, and simultaneously monitors the power supply state of a power grid to ensure ordered and safe operation of power supply of the whole vehicle.
When an ignition switch is switched to an OFF gear, a main relay of the ECU is electrically shocked and disconnected to cause the ECU to lose power supply, and the power-OFF logic of the automobile ECU of the traditional power distribution system is too simple. Because the consideration on the power-off process and the power-off condition of the automobile is not comprehensive enough, the power-off failure of the automobile is often caused; and because the on-off/fault state of the power driving port of the ECU can not be monitored, the complete power failure of the whole vehicle can not be ensured, the power shortage of the low-voltage storage battery is caused, and the driving experience and the driving safety are influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a closed-loop whole vehicle power-off monitoring method and a closed-loop whole vehicle power-off monitoring system, which can realize ordered and safe power-off of a whole vehicle and improve the reliability and safety of the power-off process of the vehicle.
In order to solve the above technical problem, as an aspect of the present invention, a closed-loop vehicle power-off monitoring method is provided, which includes the following steps:
after receiving the power-off request signal, sending a power-off pre-indication signal to each corresponding ECU so as to facilitate data storage of each ECU;
after receiving a dormancy preparation completion signal fed back by each ECU after data storage is completed, sequentially sending a power-off command to each fed back ECU, and controlling power-off processing of each fed back ECU;
and monitoring port opening and closing signals and port current of the ECU in the power-off processing process, comparing and determining whether port faults exist, and sending detected port opening and closing state signals and port fault signals to a whole vehicle network.
Wherein, further include:
after receiving a power-off request signal, inquiring whether delay time is configured in advance according to the type of the power-off request signal, if so, starting a timer and sending a pre-power-off indication signal to each corresponding ECU;
otherwise, directly sending a power-off command to each ECU, and controlling the power-off processing of each ECU.
Wherein, further include:
and after the timer reaches the delay time, sending a power-off instruction to each ECU which does not feed back the sleep preparation completion signal, controlling the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
The steps of monitoring the port switching signal and the port current of the ECU during the power-off process, comparing and determining whether there is a port fault are specifically:
after receiving the power-off command, controlling to disconnect power supply to a corresponding power supply driving port of the ECU to obtain a port opening and closing signal;
and detecting the current of the corresponding power supply driving port of the ECU in real time, and disconnecting the power supply driving port of the ECU when the current is abnormal to obtain a fault signal of the ECU port.
As another aspect of the present invention, a closed-loop vehicle-parking monitoring method is further provided, which includes the following steps:
after receiving the power-off request signal, the central domain controller sends a power-off pre-indication signal to each corresponding ECU so as to facilitate data storage of each ECU;
after receiving a sleep preparation completion signal fed back by each ECU after data storage is completed, sequentially sending a power-off instruction to the region controller corresponding to each fed back ECU, and controlling to perform power-off processing on each fed back ECU;
after the power supply driving port of the ECU is controlled by the zone controller to be powered off and power supply is cut off, a power supply port state signal is fed back to the central zone controller; detecting the current of a power supply driving port corresponding to the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining an ECU port fault signal and sending the ECU port fault signal to a central domain controller;
and the central area controller compares the power supply port state signal with the power-off signal after receiving the power supply port state signal, sends the compared port state signal to the whole vehicle network, and records a fault code of the received port fault signal to complete power-off.
Wherein, further include:
after receiving the power-off request signal, the central domain controller inquires whether delay time is configured in advance according to the type of the power-off request signal, if the delay time is configured, the central domain controller starts a timer and sends a power-off pre-indication signal to each corresponding ECU;
otherwise, directly sending a power-off command to the region controller corresponding to each ECU so as to control the power-off processing of each ECU.
Wherein, further include:
and after the timer reaches the delay time, sending a power-off instruction to the area controller of each ECU which does not feed back the dormancy preparation completion signal so as to control the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
As another aspect of the present invention, a closed-loop power-off monitoring system for a whole vehicle is further provided, which at least includes: a central zone controller, a plurality of zone controllers in communication with the central zone controller, each zone controller managing a plurality of ECUs, wherein:
the central domain controller is used for sending power-off pre-indication signals to corresponding ECUs after receiving the power-off request signals, and sending power-off instructions to the region controllers corresponding to the fed ECUs in sequence after receiving the dormancy preparation completion signals fed back by the ECUs; the system comprises a region controller, a port state signal acquisition module, a port fault code acquisition module and a port fault code acquisition module, wherein the region controller is used for receiving port state signals and port fault signals corresponding to all ECUs fed back from the region controller, sending the port state signals and the port fault signals to a whole vehicle network and recording fault codes;
the regional controller is used for receiving the power-off instruction from the central regional controller and controlling the power-off processing of each corresponding ECU according to the power-off instruction; after the power driving port of the control ECU is powered off and the power supply is cut off, feeding back a power port state signal to the central domain controller; detecting the current of a power supply driving port corresponding to the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining an ECU port fault signal and sending the ECU port fault signal to a central domain controller;
and the ECU is used for storing data after receiving the pre-power-off indication signal sent by the central domain controller, and feeding back a dormancy preparation completion signal to the central domain controller after the pre-power-off indication signal is completed.
Wherein the central domain controller further comprises:
the power return request signal receiving and processing unit is used for inquiring whether delay time is configured in advance according to the type of the power return request signal after the power return request signal is received;
the delay processing unit is used for starting a timer and sending a pre-power-off indicating signal to each corresponding ECU when the delay time is judged to be configured;
the power-off instruction sending unit is used for directly sending power-off instructions to the region controllers corresponding to the ECUs to control power-off processing of the ECUs when the power-off request signal receiving and processing unit judges that the delay time is not configured; the power-off control system is used for sequentially sending power-off instructions to the region controllers corresponding to the fed-back ECUs after receiving the dormancy preparation completion signals fed back by the ECUs; and the power-off instruction is sent to the area controller of each ECU which does not feed back the dormancy preparation completion signal after the timer reaches the delay time so as to control the power-off processing of each ECU which does not feed back and record the state fault of the corresponding ECU port.
Wherein the zone controller further comprises:
the power-off processing unit is used for controlling the corresponding ECU power supply driving port to cut off power supply when receiving the power-off instruction;
and the monitoring unit is used for detecting, monitoring and recording the current of each ECU power supply driving port in real time, disconnecting the driving port when the current is abnormal, and feeding a port fault signal back to the central domain controller.
The embodiment of the invention has the following beneficial effects:
the invention provides a closed-loop power-off monitoring method and a closed-loop power-off monitoring system for a whole vehicle.A central domain controller sends power-off pre-indicating signals (pre off) to all ECUs of the whole vehicle when receiving a power-off request signal, and the ECUs feed back sleep preparation completion signals (sleep ready) to the central domain controller after finishing data storage; the central area controller sends power-off instructions to the corresponding area controllers of the fed-back ECU in sequence so as to control the power supply driving ports to cut off power supply; the regional controller feeds back a port switching signal to the central controller, detects, monitors and records the current of the power supply driving port in real time, disconnects the driving port when the current is abnormal, and feeds back a port fault signal to the central controller; thereby ensuring the complete power-off of the whole vehicle.
According to the invention, through signal interaction logic among the controllers and monitoring the state of the power supply driving port of the whole vehicle, signal interaction among the controllers is realized to carry out closed-loop management, so that the reliability and the safety of the whole vehicle power-off process are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a main flow schematic diagram of an embodiment of a closed-loop vehicle positive electricity monitoring method provided by the present invention;
fig. 2 is a schematic main flow chart of another embodiment of a closed-loop vehicle charging monitoring method provided by the present invention;
FIG. 3 is a more detailed schematic flow diagram of FIG. 2;
fig. 4 is a schematic structural diagram of an embodiment of a closed-loop vehicle power-off monitoring system provided by the present invention;
FIG. 5 is a schematic diagram of the configuration of the central domain controller of FIG. 4;
fig. 6 is a schematic structural diagram of the zone controller of fig. 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 shows a main flow diagram of an embodiment of a closed-loop vehicle positive electricity monitoring method provided by the present invention; in this embodiment, the method at least comprises the following steps:
step S10, after receiving the power-off request signal, sending a power-off pre-indication signal to each corresponding ECU so as to facilitate the data storage of each ECU;
further comprising in this step:
after receiving a power-off request signal, inquiring whether delay time is configured in advance according to the type of the power-off request signal, if so, starting a timer and sending a pre-power-off indication signal to each corresponding ECU; the flow proceeds to step S11;
otherwise, directly sending a power-off command to each ECU, and controlling the power-off processing of each ECU. The flow proceeds to step S12;
step S11, after receiving a dormancy preparation completion signal fed back by each ECU after completing data storage, sequentially sending a power-off instruction to each fed back ECU, and controlling each fed back ECU to carry out power-off processing;
in a specific example, the steps further include:
and after the timer reaches the delay time, sending a power-off instruction to each ECU which does not feed back the dormancy preparation completion signal, controlling the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
And step S12, monitoring the port opening and closing signals and the port current of the ECU in the power-off processing process, comparing and determining whether a port fault exists, and sending the detected port opening and closing state signals and port fault signals to the whole vehicle network.
Specifically, after receiving a power-off instruction, controlling a power supply driving port corresponding to the ECU to be disconnected for supplying power, and obtaining a port opening and closing signal;
and detecting the current of the corresponding power supply driving port of the ECU in real time, and disconnecting the power supply driving port of the ECU when the current is abnormal to obtain a fault signal of the ECU port.
Fig. 2 shows a schematic main flow chart of another embodiment of a closed-loop vehicle positive monitoring method provided by the present invention; as also shown in fig. 3, in the present embodiment, the above is accomplished in a system comprising a central area controller, a plurality of area controllers, the central area controller being in communication with the plurality of area controllers, each area controller managing a plurality of ECUs. The method comprises the following steps:
step S20, after receiving the power-off request signal from the CAN bus, the central domain controller sends a power-off pre-indication signal (preoff) to each corresponding ECU through the CAN bus, so that each ECU CAN store data; the central domain controller receives the power-off signal through a timing management module therein.
In this step, further comprising:
after receiving the power-off request signal, the central domain controller inquires whether delay time is configured in advance according to the type of the power-off request signal, if the delay time is configured, the central domain controller starts a timer according to the configured delay time and sends a power-off pre-indicating signal to each corresponding ECU; specifically, whether the delay time is configured in advance can be queried through a pre-stored configuration file;
otherwise, directly sending a power-off instruction to the area controller corresponding to each ECU through the CAN bus so as to control the power-off processing of each ECU.
Step S21, after receiving a dormancy preparation completion signal fed back by each ECU after completing data storage, sequentially sending a power-off command to the area controller corresponding to each fed back ECU through the CAN bus to control power-off processing of each fed back ECU; specifically, the power-down processing is realized by a port output control module in the zone controller to control the power-down of the power supply driving port of the corresponding ECU.
Further comprising in this step:
and after the timer reaches the delay time, sending a power-off instruction to the area controller of each ECU which does not feed back the dormancy preparation completion signal so as to control the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
Step S22, after the port output control module of the zone controller controls the power supply driving port of the ECU to be powered off and power is supplied, the state signal of the power supply port is fed back to the central zone controller; detecting the current of a power supply driving port corresponding to the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining an ECU port fault signal and sending the ECU port fault signal to a central domain controller;
and step S23, the central area controller compares the power supply port status signal with the power-off signal after receiving the power supply port status signal, the compared port status signal is sent to the CAN network of the whole vehicle, and meanwhile, the received port fault signal records a fault code to complete the power-off operation of the whole vehicle.
Fig. 4 is a schematic structural diagram illustrating an embodiment of a closed-loop power-off monitoring system for a whole vehicle according to the present invention; as shown in fig. 5 and fig. 6, in this embodiment, the system at least includes: a central area controller 1, a plurality of area controllers 2 communicating with the central area controller 1, each area controller 2 managing a plurality of ECUs 3. In some examples, the zone controller of the whole vehicle may be divided into: a power domain controller, a chassis domain controller, a vehicle body domain controller, a cabin domain controller and an automatic driving domain controller; in other examples, the area controller of the entire vehicle may be divided into: the intelligent control system comprises a vehicle control domain controller, an intelligent driving domain controller and an intelligent cabin domain controller. More specifically, wherein:
the central domain controller 1 is used for sending a power-off pre-indication signal to each corresponding ECU3 after receiving the power-off request signal, and sending power-off instructions to the region controllers 2 corresponding to the fed-back ECUs in sequence after receiving the dormancy preparation completion signal fed back by each ECU; the system is used for receiving port state signals and port fault signals corresponding to the ECUs fed back by the zone controller 2, sending the port state signals and the port fault signals to the whole vehicle network, and recording fault codes;
the regional controller 2 is used for receiving the power-off instruction from the central regional controller 1 and controlling the power-off processing of each corresponding ECU according to the power-off instruction; after the power driving port of the control ECU is powered off and the power supply is cut off, a power port state signal is fed back to the central domain controller 1; detecting the current of a corresponding power supply driving port of the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining an ECU port fault signal and sending the ECU port fault signal to the central domain controller 1;
the ECU3 is configured to store data after receiving the power-off pre-indication signal transmitted from the central domain controller 1, and to feed back a sleep preparation completion signal to the central domain controller 1 after completion of the data storage.
More specifically, the central domain controller 1 further comprises at least:
the power return request signal receiving and processing unit 10 is configured to query whether a delay time is configured in advance according to a type of a power return request signal after the power return request signal is received;
the delay processing unit 11 is configured to start a timer and send a power-off pre-indication signal to each corresponding ECU when it is determined that the delay time is configured;
the power-off instruction sending unit 12 is configured to send a power-off instruction directly to the region controller corresponding to each ECU when the power-off request signal receiving and processing unit determines that the delay time is not configured, so as to control power-off processing of each ECU; the system comprises a power-off command sending unit, a power-off command sending unit and a power-off command sending unit, wherein the power-off command sending unit is used for sending power-off commands to the area controllers corresponding to the fed-back ECUs in sequence after receiving sleep preparation completion signals fed back by the ECUs; and the power-off instruction is sent to the region controller of each ECU which does not feed back the dormancy preparation completion signal after the timer reaches the delay time so as to control the power-off processing of each ECU which does not feed back and record the state fault of the corresponding ECU port;
and the power-off state signal receiving unit 13 is used for receiving port state signals and port fault signals corresponding to the ECUs fed back from the zone controller 2, sending the port state signals and the port fault signals to the whole vehicle network, and recording fault codes.
More specifically, the zone controller 2 further includes:
the power-off processing unit 20 is used for controlling the corresponding ECU power supply driving port to cut off power supply when receiving the power-off instruction;
and the monitoring unit 21 is used for detecting, monitoring and recording the current of each ECU power supply driving port in real time, disconnecting the driving port when the current is abnormal, and feeding a port fault signal back to the central domain controller.
For more details, reference may be made to and combined with the foregoing description of fig. 1 to 3, which is not repeated herein.
The embodiment of the invention has the following beneficial effects:
the invention provides a closed-loop whole vehicle electricity-withdrawing monitoring method and a closed-loop whole vehicle electricity-withdrawing monitoring system.A central domain controller sends pre-electricity-withdrawing indication signals (preoff) to all ECUs of a whole vehicle when receiving electricity-withdrawing request signals, and the ECUs feed back dormancy preparation completion signals (sleep ready) to the central domain controller after finishing data storage; the central area controller sequentially sends a power-off instruction to the corresponding area controller of the fed-back ECU so as to control the power supply driving port to cut off power supply; the regional controller feeds back a port switching signal to the central controller, detects, monitors and records the current of the power supply driving port in real time, disconnects the driving port when the current is abnormal, and feeds back a port fault signal to the central controller; thereby ensuring the complete power-off of the whole vehicle.
According to the invention, through signal interaction logic among the controllers and monitoring the state of the power supply driving port of the whole vehicle, signal interaction among the controllers is realized to carry out closed-loop management, so that the reliability and the safety of the whole vehicle power-off process are improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A closed-loop power-off monitoring method for a whole vehicle is characterized by comprising the following steps:
after receiving the power-off request signal, sending a power-off pre-indication signal to each corresponding ECU so as to facilitate data storage of each ECU;
after receiving a dormancy preparation completion signal fed back by each ECU after data storage is completed, sequentially sending a power-off command to each fed back ECU, and controlling power-off processing of each fed back ECU;
and monitoring port opening and closing signals and port current of the ECU in the power-off processing process, comparing and determining whether port faults exist, and sending the detected port opening and closing state signals and port fault signals to the whole vehicle network.
2. The method of claim 1, further comprising:
after receiving a power-off request signal, inquiring whether delay time is configured in advance according to the type of the power-off request signal, if so, starting a timer and sending a pre-power-off indication signal to each corresponding ECU;
otherwise, directly sending a power-off command to each ECU, and controlling the power-off processing of each ECU.
3. The method of claim 2, further comprising:
and after the timer reaches the delay time, sending a power-off instruction to each ECU which does not feed back the dormancy preparation completion signal, controlling the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
4. The method according to claim 3, wherein the steps of monitoring the port opening and closing signal and the port current of the ECU during the power-off process, comparing and determining whether the port fault exists are as follows:
after receiving a power-off command, controlling a power supply driving port corresponding to the ECU to be disconnected for supplying power, and obtaining a port opening and closing signal;
and detecting the current of the corresponding power supply driving port of the ECU in real time, and disconnecting the power supply driving port of the ECU when the current is abnormal to obtain a fault signal of the ECU port.
5. A closed-loop power-off monitoring method for a whole vehicle is characterized by comprising the following steps:
after receiving the power-off request signal, the central domain controller sends a power-off pre-indication signal to each corresponding ECU so as to facilitate data storage of each ECU;
after receiving a dormancy preparation completion signal fed back by each ECU after data storage is completed, sequentially sending a power-off instruction to a region controller corresponding to each fed back ECU, and controlling power-off processing of each fed back ECU;
after the power supply driving port of the ECU is controlled by the zone controller to be powered off and power supply is cut off, a state signal of the power supply port is fed back to the central zone controller; detecting the current of a power supply driving port corresponding to the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining an ECU port fault signal and sending the ECU port fault signal to a central domain controller;
and the central area controller compares the power supply port state signal with the power-off signal after receiving the power supply port state signal, sends the compared port state signal to the whole vehicle network, and records a fault code of the received port fault signal to complete power-off.
6. The method of claim 5, further comprising:
after receiving the power-off request signal, the central domain controller inquires whether delay time is configured in advance according to the type of the power-off request signal, if so, a timer is started, and a power-off pre-indication signal is sent to each corresponding ECU;
otherwise, directly sending a power-off instruction to the region controller corresponding to each ECU so as to control the power-off processing of each ECU.
7. The method of claim 6, further comprising:
and after the timer reaches the delay time, sending a power-off instruction to the area controller of each ECU which does not feed back the dormancy preparation completion signal so as to control the power-off processing of each ECU which does not feed back, and recording the state fault of the corresponding ECU port.
8. The utility model provides a closed loop whole car monitored control system that moves back which characterized in that, at least including: a central zone controller, a plurality of zone controllers in communication with the central zone controller, each zone controller managing a plurality of ECUs, wherein:
the central domain controller is used for sending power-off pre-indication signals to corresponding ECUs after receiving the power-off request signals, and sequentially sending power-off instructions to the region controllers corresponding to the fed ECUs after receiving the dormancy preparation completion signals fed back by the ECUs; the system comprises a region controller, a port state signal acquisition module, a port fault signal acquisition module and a port fault signal acquisition module, wherein the region controller is used for receiving port state signals and port fault signals corresponding to all ECUs fed back from the region controller and sending the port state signals and the port fault signals to a whole vehicle network;
the regional controller is used for receiving the power-off instruction from the central regional controller and controlling the power-off processing of each corresponding ECU according to the power-off instruction; after the power driving port of the control ECU is powered off and power supply is cut off, feeding back a power port state signal to the central domain controller; detecting the current of a corresponding power supply driving port of the ECU in real time, disconnecting the power supply driving port of the ECU when the current is abnormal, obtaining a fault signal of the ECU port and sending the fault signal to a central domain controller;
and the ECU is used for storing data after receiving the pre-power-off indication signal sent by the central domain controller, and feeding back a dormancy preparation completion signal to the central domain controller after the pre-power-off indication signal is completed.
9. The system of claim 8, wherein the central domain controller further comprises:
the power-off request signal receiving and processing unit is used for inquiring whether delay time is pre-configured according to the type of the power-off request signal after receiving the power-off request signal;
the time delay processing unit is used for starting the timer and sending a pre-power-off indicating signal to each corresponding ECU when the time delay time is judged to be configured;
the power-off instruction sending unit is used for directly sending power-off instructions to the region controllers corresponding to the ECUs to control power-off processing of the ECUs when the power-off request signal receiving and processing unit judges that the delay time is not configured; the system comprises a power-off command sending unit, a power-off command sending unit and a power-off command sending unit, wherein the power-off command sending unit is used for sending power-off commands to the area controllers corresponding to the fed-back ECUs in sequence after receiving sleep preparation completion signals fed back by the ECUs; and the power-off instruction is sent to the area controller of each ECU which does not feed back the dormancy preparation completion signal after the timer reaches the delay time so as to control the power-off processing of each ECU which does not feed back and record the state fault of the corresponding ECU port.
10. The system of claim 9, wherein the zone controller further comprises:
the power-off processing unit is used for controlling the corresponding ECU power supply driving port to cut off power supply when receiving the power-off instruction;
and the monitoring unit is used for detecting, monitoring and recording the current of each ECU power supply driving port in real time, disconnecting the driving port when the current is abnormal, and feeding a port fault signal back to the central domain controller.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107128260A (en) * | 2017-04-21 | 2017-09-05 | 广州小鹏汽车科技有限公司 | A kind of electric automobile fired state control method and system based on keyless systems |
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| CN211603929U (en) * | 2019-12-30 | 2020-09-29 | 潍柴动力股份有限公司 | Driving computer protection circuit and control system |
| CN114132178A (en) * | 2021-12-24 | 2022-03-04 | 安徽华菱汽车有限公司 | Power-off method, device and equipment for electric vehicle and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107128260A (en) * | 2017-04-21 | 2017-09-05 | 广州小鹏汽车科技有限公司 | A kind of electric automobile fired state control method and system based on keyless systems |
| CN108773270A (en) * | 2018-05-29 | 2018-11-09 | 吉利汽车研究院（宁波）有限公司 | A kind of lower method for electrically and device of battery management system |
| CN111038264A (en) * | 2019-12-27 | 2020-04-21 | 珠海格力电器股份有限公司 | Delayed power-off control system and control method for vehicle |
| CN211603929U (en) * | 2019-12-30 | 2020-09-29 | 潍柴动力股份有限公司 | Driving computer protection circuit and control system |
| CN114132178A (en) * | 2021-12-24 | 2022-03-04 | 安徽华菱汽车有限公司 | Power-off method, device and equipment for electric vehicle and computer readable storage medium |
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