Low-power-consumption control method and system for in-vehicle infotainment system

Abstract

The invention discloses a low-power-consumption control method and system for an in-vehicle infotainment system, and relates to the technical field of in-vehicle infotainment system power consumption control. Receiving a locking signal of the whole vehicle; and judging whether to enter a low-power-consumption mode or not according to the charging state and the blocking signal. According to the low-power-consumption control method for the vehicle machine, hardware does not need to be changed, and compared with a network transceiver capable of recognizing bus messages, the low-power-consumption control method has the cost advantage. After the vehicle machine enters the low-power-consumption mode, heat generation and accumulation are effectively reduced, and the situation that high-temperature protection is triggered to affect the function use of the vehicle machine is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle computer power consumption control, and in particular to a vehicle computer low power consumption control method and system. Background Art

[0002] With the popularization of new energy vehicles, a large number of users install AC charging piles in their fixed parking spaces to charge their new energy vehicles.

[0003] When the vehicle is charging, the charging module sends a network management frame on the network bus to wake up other modules on the network bus, so that all modules are in working state. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: due to the low power and long charging time of the AC charging pile, while the network is in the awake state, the connected car computer works for a long time in a closed environment, and the heat generated cannot be effectively dissipated. In extreme environments, the heat input from sunlight exposure causes the temperature of the car computer chip to rise; when a certain temperature is reached, the car computer high temperature protection strategy is triggered.

[0006] If the user gets in the car at this time, the car computer cannot start normally due to high temperature protection, affecting the use of functions.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a vehicle low power consumption control method, comprising:

[0008] Detect the charging status of the vehicle; receive the locking signal of the whole vehicle; determine whether to enter the low power consumption mode according to the charging status and the locking signal.

[0009] As a preferred solution of the vehicle low power consumption control method of the present invention, wherein: the detection of the charging state of the vehicle includes the MCU receiving a body signal, and the body signal includes a power state signal and a CAN network signal;

[0010] Determine the power status. When the power is on, synchronize the power status and continue to determine the power status. When the power status is off, receive the locking signal of the vehicle.

[0011] As a preferred solution of the vehicle low power consumption control method of the present invention, wherein: the receiving of the locking signal of the whole vehicle includes judging whether the whole vehicle network enters the dormant state, if the whole vehicle network enters the dormant state, notifying the soc to sleep, setting a 30-second timer, and waiting for further state changes;

[0012] If the vehicle network has not entered the sleep state, determine whether to enter the low power consumption mode.

[0013] As a preferred solution of the vehicle low power consumption control method of the present invention, wherein: the waiting for further state changes includes checking the SOC sleep state after the timing ends, judging whether the SOC has entered the sleep state, if the SOC enters the sleep state, the MCU enters the sleep state, and shuts down the vehicle power supply;

[0014] If the SOC has not entered the sleep state, notify the SOC peripherals to enter the sleep mode and release the GPIO.

[0015] As a preferred solution of the vehicle low power consumption control method of the present invention, wherein: the determination of whether to enter the low power consumption mode comprises performing a status query at a period of 40 milliseconds via a CAN network signal;

[0016] Determine whether the vehicle meets the conditions for low power consumption mode, and if so, enter low power consumption mode;

[0017] If the condition is not met, further determine whether it is in the charging state. If it is in the charging state, maintain the soc working state. If it is not in the charging state, maintain the current state and continue to query.

[0018] As a preferred solution of the vehicle low power consumption control method described in the present invention, the conditions of the low power consumption mode include being in a charging or replenishing power state &&locked state&&non-OTA update.

[0019] As a preferred solution of the vehicle low power consumption control method of the present invention, wherein: after the low power consumption mode condition is met, the MCU is notified to enter the low power consumption mode;

[0020] Notify the upper-layer application to suspend and release all application locks;

[0021] Turn off all modules except GNSS and CAN network;

[0022] Continuous monitoring in low-power mode;

[0023] If the charging is completed, the locking state is released, or other exit conditions are detected, the low power consumption mode is exited;

[0024] When exiting low power mode, the SOC is notified to resume normal working mode, start all peripheral modules, and restore all functions of the vehicle.

[0025] Another object of the present invention is to provide a vehicle computer low power consumption control system, which can solve the problem of function unavailability caused by high temperature protection triggering in the existing vehicle computer system by constructing a vehicle computer low power consumption control system.

[0026] To solve the above technical problems, the present invention provides the following technical solutions: a vehicle-mounted low-power consumption control system, comprising: a charging module, a network bus, a networked vehicle-mounted system and a display screen; the charging module detects the charging status, and sends a charging status signal to the bus; the network bus keeps the bus awake; the networked vehicle-mounted system receives a vehicle power-off and locking signal, and then detects the bus network status to determine whether to enter a low-power consumption mode; when the display screen enters the low-power consumption mode, it notifies the upper-layer application of the vehicle-mounted system to suspend, turns off the bus and other peripherals except GNSS, and the vehicle-mounted system enters a low-power consumption mode.

[0027] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the vehicle low power consumption control method as described above when executing the computer program.

[0028] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the vehicle-machine low-power consumption control method as described above.

[0029] Beneficial effects of the present invention: The vehicle computer low power consumption control method provided by the present invention does not require hardware changes and has a cost advantage over a network transceiver that can identify bus messages.

[0030] After the car computer enters low power consumption mode, heat generation and accumulation are effectively reduced, avoiding triggering high temperature protection and affecting the use of the car computer functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 An overall flow chart of a vehicle computer low power consumption control method provided by an embodiment of the present invention.

[0033] Figure 2 A flowchart of a prior art solution of a vehicle computer low power consumption control method provided by an embodiment of the present invention.

[0034] Figure 3 A flow chart of the prior art problem of a low power consumption control method for a vehicle computer provided by an embodiment of the present invention.

[0035] Figure 4 An overall structural diagram of a vehicle low-power control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Example 1, reference Figure 1-Figure 3 , as an embodiment of the present invention, provides a vehicle low power consumption control method, comprising:

[0039] like Figure 2 As shown, with the popularization of new energy vehicles, a large number of users install AC charging piles in their fixed parking spaces to charge their new energy vehicles.

[0040] When the vehicle is charging, the charging module sends a network management frame on the network bus to wake up other modules on the network bus, so that all modules are in working state.

[0041] like Figure 3 As shown in the figure, due to the low power of the AC charging pile and the long charging time, while the network is in the awake state, the connected car machine works for a long time in a closed environment, and the heat generated cannot be effectively dissipated. In extreme environments, the heat input from the sun causes the temperature of the car machine chip to rise; when the temperature reaches a certain level, the car machine high temperature protection strategy is triggered. At this time, if the user gets in the car, the car machine cannot start normally due to the high temperature protection, affecting the use of functions.

[0042] Therefore, the preferred process of the present invention is as follows Figure 1 As shown, the MCU receives body signals, including power status signals and CAN network signals, for detecting the power status of the vehicle.

[0043] Determine whether the power state is "ON".

[0044] If the power is "ON", synchronize the power status and continue to judge the power status. When the power status is off, execute the next step.

[0045] Determine whether the vehicle network has entered a dormant state.

[0046] If the vehicle network enters sleep mode (Y), the soc is notified to sleep and the timing setting (30 seconds) step is entered.

[0047] If the vehicle network has not entered the sleep state (N), it directly enters the state query and low power mode trigger condition judgment steps.

[0048] Set a 30 second timer to wait for further state changes.

[0049] After the timing ends, enter the SOC sleep state.

[0050] Check whether the SOC has entered sleep mode.

[0051] If the SOC enters the sleep state (Y), the MCU also enters the sleep state and shuts down the vehicle computer power supply.

[0052] If the SOC has not entered the sleep state (N), the SOC peripherals are notified to enter the sleep mode and the GPIO is released.

[0053] After the SOC enters sleep mode, it waits for the upper-layer application to release all locks and notifies the MCU to enter sleep mode.

[0054] When entering sleep mode, silence and turn off non-essential peripherals, including display backlight, Bluetooth, WIFI, GNSS, etc.

[0055] If the vehicle network has not entered the sleep state (N), the status is queried via the CAN network signal at a cycle of 40 milliseconds.

[0056] Determine whether the vehicle meets the conditions for low power consumption mode, namely "charging / recharging state &&locked state &&non-OTA update".

[0057] && represents logical AND, which means that the vehicle can enter low power mode only when charging / recharging are satisfied, the vehicle is locked and not in OTA state.

[0058] If the conditions are met, enter low power consumption mode; if the conditions are not met, further determine whether it is in charging state. If it is in charging state, keep the soc working state; if it is not in charging state, keep the current state and continue to query.

[0059] After the low power mode conditions are met, the MCU is notified to enter low power mode and the following operations are performed:

[0060] Notify the upper-layer application to suspend and release all application locks;

[0061] Turn off non-essential modules except GNSS and CAN network to reduce energy consumption.

[0062] Continuous monitoring in low power mode.

[0063] If the charging is completed, the lock state is released, or other exit conditions are detected, the low power mode is exited.

[0064] When exiting low power mode, the SOC is notified to resume normal working mode, start all peripheral modules, and restore all functions of the vehicle.

[0065] Example 2

[0066] Reference Figure 4 , is an embodiment of the present invention, and provides a vehicle low power consumption control system, including:

[0067] Charging module 100, network bus 200, networked vehicle system 300 and display screen 400;

[0068] The charging module 100 detects the charging state, and sends a charging state signal to the bus;

[0069] The network bus 200 keeps the bus awake;

[0070] After receiving the vehicle power-off and locking signal, the networked vehicle system 300 detects the bus network status to determine whether to enter the low power consumption mode;

[0071] When the display screen 400 enters the low power consumption mode, it notifies the upper layer application of the vehicle computer to suspend, shuts down the bus and other peripherals except GNSS, and the vehicle computer enters the low power consumption mode.

[0072] Embodiment 3, an embodiment of the present invention, is different from the first two embodiments in that:

[0073] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0074] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0075] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0076] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A vehicle computer low power consumption control method, characterized in that: include: Detect the charging status of the vehicle; Receive the locking signal of the whole vehicle; Whether to enter the low power consumption mode is determined according to the charging status and the lock signal.

2. The vehicle computer low power consumption control method according to claim 1, characterized in that: The detecting of the charging state of the vehicle comprises the MCU receiving a vehicle body signal, wherein the vehicle body signal comprises a power state signal and a CAN network signal; Determine the power status. When the power is on, synchronize the power status and continue to determine the power status. When the power status is off, receive the locking signal of the vehicle.

3. The vehicle computer low power consumption control method according to claim 2, characterized in that: The receiving of the locking signal of the vehicle includes determining whether the vehicle network has entered a dormant state, if the vehicle network has entered a dormant state, notifying the soc to go into dormancy, setting a 30-second timer, and waiting for further state changes; If the vehicle network has not entered the sleep state, determine whether to enter the low power consumption mode.

4. The vehicle computer low power consumption control method as claimed in claim 3, characterized in that: The waiting for further state change includes checking the SOC sleep state after the timing ends to determine whether the SOC has entered the sleep state. If the SOC enters the sleep state, the MCU enters the sleep state and turns off the power supply of the vehicle computer; If the SOC has not entered the sleep state, notify the SOC peripherals to enter the sleep mode and release the GPIO.

5. The vehicle computer low power consumption control method as claimed in claim 4, characterized in that: The determining whether to enter the low power consumption mode includes querying the status via a CAN network signal at a period of 40 milliseconds; Determine whether the vehicle meets the conditions for low power consumption mode, and if so, enter low power consumption mode; If the condition is not met, further determine whether it is in the charging state. If it is in the charging state, maintain the soc working state. If it is not in the charging state, maintain the current state and continue to query.

6. The vehicle computer low power consumption control method as claimed in claim 5, characterized in that: The conditions of the low power consumption mode include being in a charging or replenishing power state && a locked state && non-OTA update.

7. The vehicle computer low power consumption control method according to claim 6, characterized in that: After the low power mode conditions are met, notify the MCU to enter low power mode; Notify the upper-layer application to suspend and release all application locks; Turn off all modules except GNSS and CAN network; Continuous monitoring in low-power mode; If the charging is completed, the locking state is released, or other exit conditions are detected, the low power consumption mode is exited; When exiting low power mode, the SOC is notified to resume normal working mode, start all peripheral modules, and restore all functions of the vehicle.

8. A system using the vehicle low power consumption control method as claimed in any one of claims 1 to 7, characterized in that: include: A charging module (100), a network bus (200), a networked vehicle system (300), and a display screen (400); The charging module (100) detects the charging state, and sends a charging state signal to the bus; The network bus (200) maintains bus wake-up; After receiving the vehicle power-off and locking signal, the network-connected vehicle system (300) detects the bus network status to determine whether to enter a low power consumption mode; When the display screen (400) enters the low power consumption mode, it notifies the upper layer application of the vehicle computer to suspend, shuts down the bus and other peripherals except the GNSS, and the vehicle computer enters the low power consumption mode.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the vehicle computer low power consumption control method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the vehicle low power consumption control method according to any one of claims 1 to 7 are implemented.

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