CN115214499A - Power management method and device for vehicle-mounted terminal, electronic equipment and medium - Google Patents

Power management method and device for vehicle-mounted terminal, electronic equipment and medium Download PDF

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Publication number
CN115214499A
CN115214499A CN202110413800.6A CN202110413800A CN115214499A CN 115214499 A CN115214499 A CN 115214499A CN 202110413800 A CN202110413800 A CN 202110413800A CN 115214499 A CN115214499 A CN 115214499A
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China
Prior art keywords
vehicle
mounted terminal
temperature
terminal
memory
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Chinese (zh)
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马资源
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Pateo Connect and Technology Shanghai Corp
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Pateo Connect and Technology Shanghai Corp
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Priority to CN202110413800.6A priority Critical patent/CN115214499A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Sources (AREA)

Abstract

The invention relates to a power management method and device of a vehicle-mounted terminal, electronic equipment and a medium. The power management method comprises the following steps: responding to a vehicle flameout signal, controlling the vehicle-mounted terminal to enter a dormant state, and controlling a power supply to supply power to a microprocessor unit (MPU) and a memory of the vehicle-mounted terminal in the dormant state; and monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, and controlling the MPU and the memory of the vehicle-mounted terminal to be powered off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold, wherein the first temperature is higher than the second temperature. The method can reduce unnecessary consumption of the electric quantity of the vehicle-mounted terminal in the dormant state, save the electric quantity and improve the utilization rate of the battery.

Description

Power management method and device for vehicle-mounted terminal, electronic equipment and medium
Technical Field
The invention relates to the field of vehicle-mounted terminals, in particular to a power management method and device of a vehicle-mounted terminal, electronic equipment and a medium.
Background
The vehicle-mounted terminal (also called as a vehicle machine) integrates functions of navigation, backing images, audio-video entertainment, vehicle information feedback, vehicle control and the like, is front-end equipment of a vehicle monitoring and management system, and has more and more remarkable importance on a user along with the arrival of an information era. At present, after the vehicle is flamed out, the vehicle-mounted terminal can enter a sleep mode, the MPU can enter a low-power-consumption state, and after the wake-up signal is received, the vehicle-mounted terminal can be quickly started up so as to improve the use experience of a user. However, in the above mode, the quiescent current at the MPU may be excessively large, resulting in excessively high current consumption, resulting in a decrease in the utilization rate of the battery.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a power management method, a power management device, electronic equipment and a power management medium for a vehicle-mounted terminal, which can solve the problems of excessive current consumption and low battery utilization rate generated after a vehicle is shut down.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a power management method for a vehicle-mounted terminal, including the following steps:
responding to a vehicle flameout signal, controlling the vehicle-mounted terminal to enter a dormant state, and controlling a power supply to supply power to a microprocessor MPU and a memory of the vehicle-mounted terminal in the dormant state;
monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, and controlling the MPU and the memory of the vehicle-mounted terminal to be powered off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature at which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold when the first temperature is higher than the temperature; the second temperature is a temperature below which the quiescent current in the in-vehicle terminal is higher than a set current threshold.
As a further preferred technical solution, the controlling the vehicle-mounted terminal to enter the sleep state in response to the vehicle key-off signal includes:
responding to a vehicle flameout signal, and controlling the CAN of the local area network of the whole vehicle controller to sleep;
and receiving a signal of CAN dormancy of the local area network of the vehicle controller, and controlling the vehicle-mounted terminal to enter a dormant state.
As a further preferable technical solution, the method for monitoring the temperature of the in-vehicle terminal or the quiescent current in the in-vehicle terminal further comprises the following steps before, during or after controlling the power failure of the microprocessor MPU and the memory of the in-vehicle terminal when the temperature of the in-vehicle terminal is higher than the first temperature or lower than the second temperature or the quiescent current in the in-vehicle terminal is higher than a set current threshold:
and judging whether a CAN (controller area network) wake-up signal of the vehicle controller is received or not, and if so, controlling a power supply to supply power to a microprocessor MPU (micro processing unit) and a memory of the vehicle-mounted terminal.
As a further preferable technical solution, the vehicle control unit local area network CAN wake-up signal is obtained by the following method:
responding to the door lock opening instruction, the vehicle controller area network CAN acquires a wake-up signal sent by the BCM, and sends the vehicle controller area network CAN wake-up signal.
In a second aspect, the present invention provides an MCU for a vehicle-mounted terminal, comprising:
the vehicle-mounted terminal enters a dormant state control module, which is used for responding to a vehicle flameout signal and controlling the vehicle-mounted terminal to enter a dormant state, and under the dormant state, the power supply is controlled to supply power to a microprocessor MPU (micro processing unit) and a memory of the vehicle-mounted terminal;
the vehicle-mounted terminal power-off module is used for controlling the microprocessor MPU and the memory of the vehicle-mounted terminal to power off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature above which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold; the second temperature is a temperature below which the quiescent current in the vehicle-mounted terminal is higher than the set current threshold.
As a further preferable technical solution, the MCU further includes a vehicle-mounted terminal power supply module, configured to monitor a temperature of the vehicle-mounted terminal or a quiescent current in the vehicle-mounted terminal, and when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold, before, during, or after controlling the power of the microprocessor MPU and the memory of the vehicle-mounted terminal, determine whether a vehicle controller area network CAN wake-up signal is received, and if so, control the power supply to supply power to the microprocessor MPU and the memory of the vehicle-mounted terminal.
In a third aspect, the present invention provides a power management device for a vehicle-mounted terminal, including a power supply, the vehicle-mounted terminal microcontroller MCU, the vehicle-mounted terminal microprocessor MPU, the vehicle-mounted terminal memory, and a monitoring element;
the vehicle-mounted terminal microcontroller MCU is respectively connected with the vehicle-mounted terminal microprocessor MPU, the vehicle-mounted terminal memory and the monitoring element; the monitoring element comprises a temperature sensor or an ammeter; the temperature sensor is used for monitoring the temperature of the vehicle-mounted terminal, and the ammeter is used for monitoring the quiescent current of the vehicle-mounted terminal;
and the power supply is respectively connected with the vehicle-mounted terminal microcontroller MCU, the vehicle-mounted terminal microprocessor MPU and the vehicle-mounted terminal memory.
In a fourth aspect, the invention provides a vehicle-mounted terminal, which comprises the vehicle-mounted terminal microcontroller MCU, a vehicle-mounted terminal microprocessor MPU and a vehicle-mounted terminal memory, wherein the vehicle-mounted terminal microcontroller MCU is respectively connected with the vehicle-mounted terminal microprocessor MPU and the vehicle-mounted terminal memory.
In a fifth aspect, the present invention provides an electronic device, comprising:
at least one processor, and a memory communicatively coupled to at least one of the processors;
wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method described above.
In a sixth aspect, the present invention provides a medium having stored thereon computer instructions for causing the computer to perform the above-described method.
Compared with the prior art, the invention has the beneficial effects that:
the power management method of the vehicle-mounted terminal provided by the invention firstly controls the vehicle-mounted terminal to enter a dormant state after receiving a vehicle flameout signal, and the power supply supplies power to the microprocessor MPU and the memory of the vehicle-mounted terminal in the dormant state, so that the dormant state is realized, the consumption of the vehicle-mounted terminal on electric quantity can be greatly reduced during dormancy, and the electric quantity is saved; after the vehicle-mounted terminal is in sleep, by monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold value, because the MPU or the memory is influenced by the temperature, the consumed current can be rapidly increased, and the power failure of the MPU and the memory of the microprocessor for controlling the vehicle-mounted terminal can reduce the consumption, so that the electric quantity is saved, and the utilization rate of the battery is 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 described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a power management method of a vehicle-mounted terminal according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a vehicle-mounted terminal microcontroller MCU provided in embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a power management device of an in-vehicle terminal according to embodiment 3 of the present invention;
fig. 4 is a schematic structural diagram of an in-vehicle terminal provided in embodiment 4 of the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Example 1
Fig. 1 is a flowchart of a power management method of an in-vehicle terminal according to an embodiment, and the embodiment is suitable for power management of the in-vehicle terminal after a vehicle is turned off. The method may be performed by a vehicle terminal microcontroller MCU, which may be constituted by software and/or hardware and is generally integrated in an electronic device.
Referring to fig. 1, the power management method of the in-vehicle terminal of the present embodiment includes the steps of:
and S110, responding to the vehicle flameout signal, controlling the vehicle-mounted terminal to enter a dormant state, and controlling a power supply to supply power to a microprocessor MPU and a memory of the vehicle-mounted terminal in the dormant state.
The "sleep state" refers to a state in which other elements in the in-vehicle terminal are powered off except the MCU, the MPU, and the memory of the in-vehicle terminal. The "memory" may be, for example, a memory stick or a memory card.
Actually, when executed, the MCU receives a key-off signal of the vehicle, and then controls the power supply to supply power only to the microprocessor MPU and the memory.
Specifically, the controlling the vehicle-mounted terminal to enter the sleep state in response to the vehicle flameout signal includes:
responding to a vehicle flameout signal, and controlling the CAN of the local area network of the whole vehicle controller to sleep;
and receiving a signal of CAN (controller area network) dormancy of the vehicle controller, and controlling the vehicle-mounted terminal to enter a dormant state.
For example, after the vehicle is shut down, the vehicle controller area network CAN first enters a sleep state, and then the MCU in the vehicle-mounted terminal receives a signal indicating that the vehicle controller area network CAN is in the sleep state and controls the vehicle-mounted terminal to enter the sleep state.
S120, monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, and controlling the MPU and the memory of the vehicle-mounted terminal to be powered off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature above which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold; the second temperature is a temperature below which the quiescent current in the vehicle-mounted terminal is higher than the set current threshold.
In the step, whether one of the temperature of the vehicle-mounted terminal and the quiescent current in the vehicle-mounted terminal exceeds a set threshold value is judged by monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, and whether the microprocessor MPU and the memory of the vehicle-mounted terminal are powered off is controlled accordingly.
The first temperature and the second temperature can be obtained by testing that the vehicle is turned off and the vehicle-mounted terminal is in a sleep mode, and the quiescent current in the vehicle-mounted terminal exceeds a set current threshold. Generally, when the temperature of the vehicle-mounted terminal is too high or too low, the quiescent current is large.
Further, when the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal is monitored, and when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold value, before, during or after the power failure of the microprocessor MPU and the memory of the vehicle-mounted terminal, the method further comprises the following steps:
and judging whether a CAN (controller area network) wake-up signal of the vehicle controller is received or not, and if so, controlling a power supply to supply power to a microprocessor unit (MPU) and a memory of the vehicle-mounted terminal.
The purpose of the steps is to enable the vehicle-mounted terminal to be quickly started when the vehicle receives the relevant signal that the vehicle is about to start again under the condition that the vehicle-mounted terminal is in a dormant state or is completely powered off.
Further, the vehicle control unit local area network CAN wake-up signal is obtained by adopting the following method:
and responding to the door lock opening instruction, acquiring the wake-up signal sent by the body controller BCM by the vehicle controller area network CAN, and sending the wake-up signal of the vehicle controller area network CAN by the vehicle controller area network CAN.
After the vehicle door lock is unlocked, the BCM of the vehicle body controller CAN send a wake-up signal to the CAN of the vehicle controller area network, then the CAN of the vehicle controller area network sends the wake-up signal of the CAN of the vehicle controller area network to the MCU, the MCU is converted into a normal working state, the MCU controls the power supply to supply power to the MPU and the memory of the vehicle-mounted terminal, and the vehicle-mounted terminal is normally started.
Example 2
As shown in fig. 2, the present embodiment provides an MCU for a vehicle-mounted terminal, including:
the vehicle-mounted terminal enters a dormant state control module 101, which is used for responding to a vehicle flameout signal and controlling the vehicle-mounted terminal to enter a dormant state, and in the dormant state, a power supply is controlled to supply power to a microprocessor MPU (micro processing unit) and a memory of the vehicle-mounted terminal;
the vehicle-mounted terminal power-off module 102 is used for controlling the microprocessor MPU and the memory of the vehicle-mounted terminal to power off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature above which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold; the second temperature is a temperature below which the quiescent current in the in-vehicle terminal is higher than a set current threshold.
The MCU is used to execute the power management method of the in-vehicle terminal of the above embodiment, and thus has at least functional blocks and advantageous effects corresponding to the method.
Further, the MCU also comprises a vehicle-mounted terminal power supply module which is used for monitoring the temperature of the vehicle-mounted terminal or the static current in the vehicle-mounted terminal, judging whether a CAN (controller area network) wake-up signal of the vehicle controller is received before, during or after controlling the power failure of the MPU and the memory of the vehicle-mounted terminal when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the static current in the vehicle-mounted terminal is higher than a set current threshold value, and controlling the power supply to supply power to the MPU and the memory of the vehicle-mounted terminal if the CAN wake-up signal is received.
Example 3
As shown in fig. 3, the present embodiment provides a power management device of a vehicle-mounted terminal, which includes a power supply 201, the vehicle-mounted terminal micro controller MCU 202, the vehicle-mounted terminal micro processor MPU203, a vehicle-mounted terminal memory 204, and a monitoring element 205;
the vehicle-mounted terminal microcontroller MCU 202 is respectively connected with the vehicle-mounted terminal microprocessor MPU203, the vehicle-mounted terminal memory 204 and the monitoring element 205; the monitoring element comprises a temperature sensor or an ammeter; the temperature sensor is used for monitoring the temperature of the vehicle-mounted terminal, and the ammeter is used for monitoring the quiescent current of the vehicle-mounted terminal;
the power supply 201 is connected to the vehicle terminal micro controller MCU 202, the vehicle terminal micro processor MPU203 and the vehicle terminal memory 204, respectively.
The power supply management device of the vehicle-mounted terminal comprises the vehicle-mounted terminal microcontroller MCU, so that the vehicle-mounted terminal microcontroller MCU at least has the same advantages as the vehicle-mounted terminal microcontroller MCU.
Example 4
As shown in fig. 4, the present embodiment provides an in-vehicle terminal, which includes the above-mentioned in-vehicle terminal micro-controller MCU 202, in-vehicle terminal microprocessor MPU203 and in-vehicle terminal memory 204, and the in-vehicle terminal micro-controller MCU 202 is connected to the in-vehicle terminal microprocessor MPU203 and the in-vehicle terminal memory 204, respectively. The vehicle-mounted terminal comprises the vehicle-mounted terminal microcontroller MCU, so that the vehicle-mounted terminal has at least the same advantages as the vehicle-mounted terminal microcontroller MCU.
Example 5
As shown in fig. 5, the present embodiment provides an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to at least one of the processors; wherein the content of the first and second substances,
the memory stores instructions executable by at least one of the processors to cause the at least one of the processors to perform the method described above. The at least one processor in the electronic device is capable of performing the above method and thus has at least the same advantages as the above method.
Optionally, the electronic device further includes an interface for connecting the components, including a high-speed interface and a low-speed interface. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions for execution within the electronic device, including instructions stored in or on the memory to display Graphical information for a GUI (Graphical User Interface) on an external input/output device, such as a display device coupled to the Interface. In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple electronic devices may be connected, with each device providing portions of the necessary operations (e.g., as a server array, a group of blade servers, or a multi-processor system). In fig. 5, one processor 301 is taken as an example.
The memory 302 is a computer-readable storage medium, and may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the power management method of the vehicle terminal in the embodiment of the present invention (for example, the vehicle terminal entering sleep state control module 101 and the vehicle terminal power-off module 102 in the vehicle terminal microcontroller MCU). The processor 301 executes various functional applications of the device and data processing by running software programs, instructions, and modules stored in the memory 302, that is, implements the above-described power management method of the in-vehicle terminal.
The memory 302 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 302 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 302 may further include memory located remotely from the processor 301, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The electronic device may further include: an input device 303 and an output device 304. The processor 301, the memory 302, the input device 303 and the output device 304 may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example.
The input device 303 may receive input numeric or character information, and the output device 304 may include a display device, an auxiliary lighting device (e.g., an LED), a tactile feedback device (e.g., a vibration motor), and the like. The display device may include, but is not limited to, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, and a plasma display. In some implementations, the display device can be a touch screen.
Example 6
The present embodiment provides a medium having stored thereon computer instructions for causing the computer to perform the method described above. The computer instructions on the medium for causing a computer to perform the method described above thus have at least the same advantages as the method described above.
The medium of the present invention may take the form of any combination of one or more computer-readable media. The medium may be a computer readable signal medium or a computer readable storage medium. The medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the medium include: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF (Radio Frequency), etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present invention is not limited herein.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A power management method of a vehicle-mounted terminal is characterized by comprising the following steps:
responding to a vehicle flameout signal, controlling the vehicle-mounted terminal to enter a dormant state, and controlling a power supply to supply power to a microprocessor MPU and a memory of the vehicle-mounted terminal in the dormant state;
monitoring the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal, and controlling the MPU and the memory of the vehicle-mounted terminal to be powered off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature above which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold; the second temperature is a temperature below which the quiescent current in the in-vehicle terminal is higher than a set current threshold.
2. The method for power management of an in-vehicle terminal according to claim 1, wherein the controlling the in-vehicle terminal to enter the sleep state in response to the vehicle key-off signal comprises:
responding to a vehicle flameout signal, and controlling the CAN of the local area network of the whole vehicle controller to sleep;
and receiving a signal of CAN (controller area network) dormancy of the vehicle controller, and controlling the vehicle-mounted terminal to enter a dormant state.
3. The power management method of the vehicle-mounted terminal according to claim 1 or 2, characterized by further comprising the following steps before, during or after the monitoring of the temperature of the vehicle-mounted terminal or the quiescent current in the vehicle-mounted terminal and the controlling of the microprocessor MPU and the memory of the vehicle-mounted terminal to be powered off when the temperature of the vehicle-mounted terminal is higher than the first temperature or lower than the second temperature or the quiescent current in the vehicle-mounted terminal is higher than a set current threshold value:
and judging whether a CAN (controller area network) wake-up signal of the vehicle controller is received or not, and if so, controlling a power supply to supply power to a microprocessor unit (MPU) and a memory of the vehicle-mounted terminal.
4. The power management method of the vehicle-mounted terminal according to claim 3, wherein the CAN wakeup signal of the vehicle controller area network is obtained by:
responding to the door lock opening instruction, the vehicle controller area network CAN acquires a wake-up signal sent by the BCM, and sends the vehicle controller area network CAN wake-up signal.
5. The utility model provides a vehicle mounted terminal microcontroller MCU which characterized in that includes:
the vehicle-mounted terminal enters a dormant state control module, which is used for responding to a vehicle flameout signal and controlling the vehicle-mounted terminal to enter a dormant state, and under the dormant state, the power supply is controlled to supply power to a microprocessor MPU (micro processing unit) and a memory of the vehicle-mounted terminal;
the vehicle-mounted terminal power-off module is used for controlling the microprocessor MPU and the memory of the vehicle-mounted terminal to power off when the temperature of the vehicle-mounted terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle-mounted terminal is higher than a current threshold, wherein the first temperature is higher than the second temperature; the first temperature is the temperature above which the quiescent current in the vehicle-mounted terminal is higher than a set current threshold; the second temperature is a temperature below which the quiescent current in the in-vehicle terminal is higher than a set current threshold.
6. The MCU of claim 5, further comprising a vehicle terminal power supply module for monitoring the temperature of the vehicle terminal or the quiescent current in the vehicle terminal, and when the temperature of the vehicle terminal is higher than a first temperature or lower than a second temperature or the quiescent current in the vehicle terminal is higher than a set current threshold, controlling the microprocessor MPU and the memory of the vehicle terminal to determine whether a CAN wake-up signal is received before, during or after the power failure, and if so, controlling the power supply to supply power to the microprocessor MPU and the memory of the vehicle terminal.
7. A power management device of a vehicle-mounted terminal, which is characterized by comprising a power supply, a vehicle-mounted terminal microcontroller MCU, a vehicle-mounted terminal microprocessor MPU, a vehicle-mounted terminal memory and a monitoring element, wherein the vehicle-mounted terminal microcontroller MCU is provided with a power supply control unit according to claim 5 or 6;
the vehicle-mounted terminal microcontroller MCU is respectively connected with the vehicle-mounted terminal microprocessor MPU, the vehicle-mounted terminal memory and the monitoring element; the monitoring element comprises a temperature sensor or an ammeter; the temperature sensor is used for monitoring the temperature of the vehicle-mounted terminal, and the ammeter is used for monitoring the quiescent current of the vehicle-mounted terminal;
and the power supply is respectively connected with the vehicle-mounted terminal microcontroller MCU, the vehicle-mounted terminal microprocessor MPU and the vehicle-mounted terminal memory.
8. A vehicle-mounted terminal, characterized by comprising a vehicle-mounted terminal microcontroller MCU according to claim 7, a vehicle-mounted terminal microprocessor MPU and a vehicle-mounted terminal memory, wherein the vehicle-mounted terminal microcontroller MCU is connected to the vehicle-mounted terminal microprocessor MPU and the vehicle-mounted terminal memory, respectively.
9. An electronic device, comprising:
at least one processor, and a memory communicatively coupled to at least one of the processors;
wherein the memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the method of any one of claims 1-4.
10. A medium having stored thereon computer instructions for causing a computer to perform the method of any one of claims 1-4.
CN202110413800.6A 2021-04-16 2021-04-16 Power management method and device for vehicle-mounted terminal, electronic equipment and medium Pending CN115214499A (en)

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