Time service method and device of vehicle, vehicle, medium and product
By combining the timing method of satellite positioning chip and clock chip, the problem of insufficient vehicle timing accuracy is solved, and high-precision and low-power timing service is achieved.
Patent Information
- Application Number
- CN202510408802.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-07-04
AI Technical Summary
The existing vehicle timing technology relies on network timing, resulting in low accuracy, especially in insufficient accuracy when network delays or fluctuations.
The timing method is adopted that combines satellite positioning chip and clock chip. By timing the clock chip, the satellite positioning chip is awakened to receive satellite signals when the conditions are met to calibrate the clock chip time, and then the vehicle is timed.
It improves the accuracy of vehicle timing, ensures that high-precision clock timing service can be achieved in any scenario, and reduces system power consumption.
Smart Images
Figure CN120255306A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of vehicle control, and particularly relates to a timing method, device, vehicle, medium and product for a vehicle. Background Art
[0002] Vehicle timing refers to precisely synchronizing the time of the vehicle system to ensure the accuracy of various time-related functions during vehicle operation.
[0003] Currently, the timing technology of vehicles basically adopts a network timing scheme. Since the accuracy of network timing is at the second level, and network timing depends on a computer accessing a time server through the network, if there is a delay or fluctuation in the network, it may lead to a problem of low accuracy of vehicle timing. Summary of the Invention
[0004] Embodiments of this application provide a timing method, device, vehicle, medium and product for a vehicle, which can improve the accuracy of vehicle timing.
[0005] In a first aspect, embodiments of this application provide a timing method for a vehicle. The vehicle includes a timing device, and the timing device includes a satellite positioning chip and a clock chip. The timing method includes:
[0006] Timing by the clock chip;
[0007] If a first condition is satisfied, wake up the satellite positioning chip; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip;
[0008] Calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip;
[0009] Perform vehicle timing according to the calibrated time of the clock chip.
[0010] In a second aspect, embodiments of this application provide a timing device for a vehicle. The vehicle includes a timing device, and the timing device includes a satellite positioning chip and a clock chip. The timing device includes:
[0011] A timing module, configured to perform timing by the clock chip;
[0012] A wake-up module, configured to wake up the satellite positioning chip if a first condition is satisfied; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip;
[0013] A calibration module, configured to calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip;
[0014] The timing module is used to time the vehicle according to the calibrated time of the clock chip.
[0015] In a third aspect, an embodiment of the present application provides a vehicle, which includes:
[0016] A processor and a memory storing computer program instructions;
[0017] When the processor executes the computer program instructions, the timing method of the vehicle described in the first aspect is implemented.
[0018] In a fourth aspect, an embodiment of the present application provides a computer storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the timing method of the vehicle described in the first aspect is implemented.
[0019] In a fifth aspect, an embodiment of the present application provides a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device is enabled to execute the timing method of the vehicle described in the first aspect.
[0020] In the embodiment of the present application, timing is first performed by a clock chip. If the first condition is met, the satellite positioning chip is woken up; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip; the time of the clock chip is calibrated according to the satellite time in the satellite signal received by the satellite positioning chip; the vehicle is timed according to the calibrated time of the clock chip. In this way, on the one hand, the solution of the present application utilizes the high-precision characteristic of satellite timing and combines the timing of the clock chip in the timing device to realize the clock timing service that can be immediately carried out in any scenario. On the other hand, the satellite positioning chip can be woken up according to the wake-up time or wake-up signal of the satellite positioning chip, so that the time of the clock chip can be updated, and thus the accuracy of vehicle timing can be improved. Description of the Drawings
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.
[0022] Figure 1 It is a schematic structural diagram of the timing device provided by the embodiment of the present application;
[0023] Figure 2 It is an application environment diagram of the timing device provided by the embodiment of the present application;
[0024] Figure 3 It is one of the schematic flowcharts of the timing method of the vehicle provided by the embodiment of the present application;
[0025] Figure 4 It is the second flowchart of a vehicle timing method provided by an embodiment of the present application;
[0026] Figure 5 It is a timing diagram of a vehicle timing method provided by an embodiment of the present application;
[0027] Figure 6 It is a structural diagram of a vehicle timing device provided by an embodiment of the present application;
[0028] Figure 7 It is a schematic diagram of the hardware structure of a vehicle provided by an embodiment of the present application. Detailed implementation manners
[0029] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.
[0030] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device including the said elements.
[0031] The vehicle timing method provided by an embodiment of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.
[0032] See Figure 1 , Figure 1Schematic structural diagram of a timing device provided by an embodiment of the present application. The timing device mainly includes a satellite positioning chip, a processor, a communication component, a clock chip, and a rechargeable power source. In one example, the satellite positioning chip can be a Global Navigation Satellite System (GNSS) positioning chip, and the processor can be an STM32L4 processor. The STM32L4 processor is a low-power microcontroller unit (MCU). The communication component can be a CAN transceiver, the clock chip can be a PCF2131 high-precision clock chip, and the rechargeable power source can be a 4.2V rechargeable lithium battery for power supply.
[0033] The satellite positioning chip is used to receive satellite signals to obtain satellite time. The clock chip is used for timing and timing control. The timing device can access the vehicle bus through the communication component to synchronize the time of the vehicle. The rechargeable power source can be used to supply power to the timing device when the vehicle is powered off.
[0034] See Figure 2 , Figure 2 is an application environment diagram of the timing device provided by an embodiment of the present application. The timing device communicates with the Electronic Control Unit (ECU) of the vehicle. Specifically, the timing device can communicate with the electronic control unit through a CAN transceiver.
[0035] See Figure 3 , Figure 3 is one of the flowcharts of the vehicle timing method provided by an embodiment of the present application. The vehicle includes a timing device, and the timing device includes a satellite positioning chip and a clock chip. As Figure 3 shown, the timing method can include the following steps:
[0036] Step 301: Perform timing through the clock chip.
[0037] In the embodiment of the present application, the clock chip can perform timing to synchronize the time of each component inside the system for vehicle timing. In one example, the clock chip can be a high-precision PCF2131 clock chip. The PCF2131 clock chip is a low-power real-time clock chip with an error accuracy of ±3ppm and a daily error of less than 260ms, so it has high accuracy.
[0038] In the embodiments of the present application, the clock chip can always remain in the working state. When the vehicle is in the powered-on state, the timing device can be powered by the vehicle power supply, so that the clock chip remains in the working state. When the vehicle is in the powered-off state, the timing device can be powered by the rechargeable power supply inside the timing device, so that the clock chip remains in the working state.
[0039] Step 302: If the first condition is satisfied, wake up the satellite positioning chip; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip.
[0040] In the embodiments of the present application, since the power consumption of the satellite positioning chip is relatively high, when the first condition is not satisfied, the satellite positioning chip is kept in the sleep state. When the first condition is satisfied, the satellite positioning chip is woken up.
[0041] In the embodiments of the present application, the first condition can be understood as the wake-up condition of the satellite positioning chip. The first condition can include reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip. The wake-up time of the satellite positioning chip can be a pre-set time. The wake-up time can be set periodically, for example, waking up once every 8 hours, or can be set to a fixed time point.
[0042] In the embodiments of the present application, when the satellite positioning chip is not woken up, the timing device is in the ultra-low power sleep state and automatically times through the clock chip.
[0043] In the embodiments of the present application, the wake-up signal of the satellite positioning chip can be understood as the wake-up signal initiated by the user through a mobile terminal such as a mobile phone to wake up the satellite positioning chip. It can also be understood as the wake-up signal sent after the vehicle is powered on when the user starts the vehicle.
[0044] Step 303: Calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip.
[0045] In the embodiments of the present application, after the satellite positioning chip is woken up, the satellite positioning chip can receive satellite signals. The satellite signals can include the position and timestamp of the satellite. The timestamp can be understood as the precise time when the satellite sends the signal, that is, the satellite time. After obtaining the satellite time, the time of the clock chip can be calibrated according to the satellite time to improve the accuracy of the time of the clock chip.
[0046] In the embodiments of the present application, calibrating the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip can achieve an accuracy of milliseconds, thereby improving the accuracy of vehicle timing.
[0047] Step 304: Perform vehicle timing according to the calibrated time of the clock chip.
[0048] In the embodiments of the present application, the time of the clock chip is used to time the vehicle. When the time synchronization condition of the vehicle is met, the vehicle can be timed according to the calibrated time of the clock chip. Timing the vehicle according to the calibrated time of the clock chip means synchronizing the calibrated time of the clock chip to the time of the vehicle.
[0049] In one example, when the vehicle is powered on, the vehicle can be timed according to the calibrated time of the clock chip. In another example, when a time synchronization request of the vehicle is received, the vehicle can be timed according to the calibrated time of the clock chip.
[0050] For the time synchronization method of the vehicle in this embodiment, first, the clock chip is used for timing. If a first condition is met, the satellite positioning chip is awakened; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip; the time of the clock chip is calibrated according to the satellite time in the satellite signal received by the satellite positioning chip; the vehicle is timed according to the calibrated time of the clock chip. In this way, on the one hand, the solution of the present application utilizes the high-precision characteristic of satellite timing and combines the timing of the clock chip in the timing device to realize clock timing service immediately in any scenario. On the other hand, the satellite positioning chip can be awakened according to the wake-up time or wake-up signal of the satellite positioning chip, so that the time of the clock chip can be updated, and further, the accuracy of vehicle timing can be improved.
[0051] In some embodiments, after awakening the satellite positioning chip, the time synchronization method further includes:
[0052] When the satellite positioning chip does not receive a satellite signal, the vehicle is timed according to the timing time of the clock chip.
[0053] Specifically, when the satellite positioning chip does not receive a satellite signal, the satellite positioning chip cannot obtain the satellite time in the satellite signal. Since the clock chip keeps working, when the vehicle needs to be timed, the vehicle can be timed according to the timing time of the clock chip inside the timing device.
[0054] In this embodiment, by timing the vehicle according to the timing time of the clock chip when the satellite positioning chip does not receive a satellite signal, the vehicle can perform timing service immediately in an environment without satellite signals.
[0055] In some embodiments, after timing by the clock chip, the time synchronization method further includes:
[0056] When the satellite positioning chip is in a sleep state, the vehicle is timed according to the timing time of the clock chip.
[0057] Specifically, when the wake-up time of the satellite positioning chip is not reached, the satellite positioning chip is in a sleep state. At this time, the satellite positioning chip cannot receive satellite signals. Since the clock chip always remains in a working state, when the vehicle needs time synchronization, the vehicle can be synchronized according to the timing of the clock chip inside the time synchronization device.
[0058] In this embodiment, by synchronizing the vehicle according to the timing of the clock chip when the satellite positioning chip is in a sleep state, the vehicle can perform clock synchronization service immediately in any scenario.
[0059] In some embodiments, if the first condition is met, the satellite positioning chip is woken up, including:
[0060] When the working state of the vehicle is in a power-off state, if the first condition is met, the satellite positioning chip is woken up.
[0061] Specifically, the power-off state can be understood as the power-off state of the vehicle after disconnecting the power supply. When the working state of the vehicle is in a power-off state, it can be determined whether to wake up the satellite positioning chip according to whether the vehicle meets the first condition. If the wake-up time of the satellite positioning chip is reached or a wake-up signal for the satellite positioning chip is received, the satellite positioning chip is woken up.
[0062] In this embodiment, when the vehicle is powered off, the satellite positioning chip is woken up through condition judgment, so that the satellite positioning chip does not need to always remain in a working state, thereby reducing the system power consumption.
[0063] In some embodiments, synchronizing the vehicle includes:
[0064] When the second condition is met, the vehicle is synchronized;
[0065] wherein the second condition includes at least one of the following:
[0066] It is obtained that the working state of the vehicle changes from a power-off state to a power-on state;
[0067] A time synchronization request of the vehicle is received.
[0068] Specifically, the second condition can be understood as the condition that needs to be met for synchronizing the vehicle. The second condition can include but is not limited to obtaining that the working state of the vehicle changes from a power-off state to a power-on state, or receiving a time synchronization request of the vehicle, etc.
[0069] In one example, generally, at the moment when the vehicle is powered on, the vehicle needs to be time-synchronized. That is, when the working state of the vehicle changes from the powered-off state to the powered-on state, the vehicle needs to be time-synchronized. In another example, when a time-synchronization request of the vehicle is received, the vehicle also needs to be time-synchronized.
[0070] In this embodiment, by determining whether the second condition is satisfied before time-synchronizing the vehicle, the accuracy of vehicle time-synchronization can be improved.
[0071] In some embodiments, the time-synchronization device further includes a rechargeable power source, and the time-synchronization method further includes:
[0072] When the working state of the vehicle is the powered-off state, the time-synchronization device is powered by the rechargeable power source.
[0073] Specifically, the time-synchronization device may further include a rechargeable power source. The rechargeable power source can be used to power the time-synchronization device when the working state of the vehicle is in the powered-off state to ensure the operation of the clock chip and the satellite positioning chip. When the working state of the vehicle is in the powered-on state, the rechargeable power source can be charged by the vehicle's power supply. Optionally, the rechargeable power source can be a 4.2V rechargeable lithium battery for power supply.
[0074] In this embodiment, by setting a rechargeable power source in the time-synchronization device, it can be ensured that the time-synchronization device can also operate with low power consumption when the vehicle is powered off, improving the accuracy of vehicle time-synchronization.
[0075] In some embodiments, after timing by the clock chip, the time-synchronization method further includes:
[0076] When the working state of the vehicle is in the powered-on state, perform a detection operation on the environment where the vehicle is located to obtain an environment detection result;
[0077] When the environment detection result indicates that there is a satellite signal in the environment where the vehicle is located, wake up the satellite positioning chip to receive the satellite signal;
[0078] Calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip;
[0079] Synchronize the vehicle according to the calibrated time of the clock chip.
[0080] Specifically, when the vehicle is in the powered-on state, the vehicle environment can also be detected, and based on the environment detection result, it is determined whether the satellite positioning chip needs to be awakened. When the environment where the vehicle is located supports receiving satellite signals, the environment detection result indicates that there are satellite signals in the vehicle environment. In one example, the environment type that supports receiving satellite signals can be an outdoor environment, and the environment types that do not support receiving satellite signals can be an indoor environment, a tunnel, an underground garage, etc.
[0081] In the embodiment of the present application, when the environment detection result indicates that there are satellite signals in the vehicle environment, the satellite positioning chip is awakened to receive satellite signals. After the satellite positioning chip is awakened, it can receive satellite signals and the satellite time included in the satellite signals. Then, the time of the clock chip is calibrated according to the satellite time, and the vehicle is timed according to the time calibrated by the clock chip.
[0082] In this embodiment, when the vehicle is in the powered-on state, by receiving the satellite time and performing time calibration before timing the vehicle, the accuracy of vehicle timing can be improved.
[0083] It should be noted that the various optional implementation manners described in the embodiments of the present application can be combined with each other or implemented separately without conflict, and the embodiments of the present application do not make any limitations in this regard.
[0084] For ease of understanding, a specific embodiment is used as an example for illustration:
[0085] See Figure 4 , Figure 4 is the second flowchart of a vehicle timing method provided by the embodiment of the present application. As Figure 4 shown, the vehicle timing method may include the following steps:
[0086] S1: Initialize the GNSS chip;
[0087] S2: Determine whether a wake-up signal is received. If not, proceed to S3; if so, proceed to S4;
[0088] S3: Internal clock timing;
[0089] S4: Wake up the GNSS chip;
[0090] S5: Obtain satellite timing;
[0091] S6: Calibrate the internal clock;
[0092] S7: Determine whether a timing synchronization request is received. If so, proceed to S8;
[0093] S8: Perform external timing through CAN;
[0094] S9: Determine whether it is 8 hours apart. If so, go to S4; if not, go to S3.
[0095] In this specific embodiment, the specific implementation can be referred to the foregoing description and will not be elaborated here.
[0096] See Figure 5 , Figure 5 is the timing diagram of a time synchronization method for a vehicle provided by an embodiment of the present application. As Figure 5 shown, the vehicle ECU communicates with the time synchronization device. The vehicle ECU may include an intelligent driving ECU and other ECUs, etc.
[0097] Taking the intelligent driving ECU as an example, when the vehicle is powered on, the intelligent driving ECU sends a time synchronization request to the time synchronization device. The time synchronization device synchronizes the time of the vehicle according to the internal clock and returns the time synchronization result to the intelligent driving ECU.
[0098] In the embodiment of the present application, the intelligent driving ECU is built-in with GNSS, which can be used to detect whether the vehicle has a positioning environment, that is, whether the environment where the vehicle is located can receive satellite signals. When it is detected that the environment where the vehicle is located can receive satellite signals, the GNSS chip in the time synchronization device is woken up, that is, the satellite positioning chip in the present application. And calibrate the time of the internal clock (that is, the clock chip in the present application) according to the satellite time in the satellite signals received by the satellite positioning chip.
[0099] In the embodiment of the present application, when the working state of the vehicle is the power-off state, the GNSS chip can be woken up according to a preset wake-up time. For example, the GNSS chip is woken up once every 8 hours. After the GNSS chip is woken up, it can calibrate the time of the internal clock according to the received satellite time.
[0100] In the embodiment of the present application, the time synchronization method of other ECUs is the same as the above method and will not be elaborated here.
[0101] It should be noted that, as the embodiment of the network-side device corresponding to the above method embodiment, therefore, the relevant descriptions in the above method embodiment can be referred to and the same beneficial effects can be achieved. To avoid repeated description, it will not be elaborated here.
[0102] Based on the vehicle time synchronization method provided in the above embodiment, correspondingly, the present application also provides a specific implementation manner of a vehicle time synchronization device. Please refer to the following embodiment.
[0103] See Figure 6 , which is the structural diagram of the vehicle time synchronization device provided by the embodiment of the present application. The time synchronization device 600 may include:
[0104] A timing module 610, configured to perform timing through a clock chip;
[0105] A wake-up module 620, configured to wake up a satellite positioning chip if a first condition is met when the vehicle is in a powered-off state; wherein the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip.
[0106] A calibration module 630, configured to calibrate the time of a clock chip according to the satellite time in the satellite signals received by the satellite positioning chip.
[0107] A timing module 640, configured to perform timing on the vehicle according to the calibrated time of the clock chip.
[0108] The timing device of the vehicle provided by the embodiments of the present application can implement Figure 3 each process in the method embodiments. To avoid repetition, details are not described herein again.
[0109] Figure 7 shows a schematic hardware structure diagram of a vehicle provided by an embodiment of the present application.
[0110] The vehicle may include a processor 701 and a memory 702 storing computer program instructions.
[0111] Specifically, the above-mentioned processor 701 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.
[0112] The memory 702 may include a mass storage for data or instructions. By way of example and not limitation, the memory 702 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disc, a magneto-optical disc, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. In a suitable case, the memory 702 may include a removable or non-removable (or fixed) medium. In a suitable case, the memory 702 may be internal or external to the integrated gateway disaster recovery device. In a specific embodiment, the memory 702 is a non-volatile solid-state memory.
[0113] The memory may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of the present disclosure.
[0114] The processor 701 realizes the time synchronization method of any vehicle in the above embodiments by reading and executing the computer program instructions stored in the memory 702.
[0115] In one example, the vehicle may further include a communication interface 703 and a bus 710. Among them, as Figure 5 shown, the processor 701, the memory 702, and the communication interface 703 are connected through the bus 710 and complete communication with each other.
[0116] The communication interface 703 is mainly used to realize the communication between each module, device, unit, and / or device in the embodiments of the present application.
[0117] The bus 710 includes hardware, software, or both, and couples the components of the vehicle to each other. By way of example and not limitation,
[0118] The bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses or a combination of two or more of these. Where appropriate, bus 710 may include one or more buses. Although embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.
[0119] In addition, in combination with the time synchronization method of the vehicle in the above embodiments, embodiments of the present application may provide a computer storage medium to implement. Computer program instructions are stored on the computer storage medium; when the computer program instructions are executed by a processor, any one of the time synchronization methods of the vehicle in the above embodiments is implemented.
[0120] It should be clear that the present application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.
[0121] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a functional card, and so on. When implemented in software, the elements of the present application are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted over a transmission medium or communication link via a data signal carried in a carrier wave. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM, floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency links, and so on. The code segment can be downloaded via a computer network such as the Internet, an intranet, and so on.
[0122] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.
[0123] Aspects of the present disclosure have been described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each block in the flowcharts and / or block diagrams, and the combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / actions specified in one or more blocks of the flowcharts and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It should also be understood that each block in the block diagrams and / or flowcharts, and the combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware for performing the specified functions or actions, or by a combination of dedicated hardware and computer instructions.
[0124] As described above, this is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.
Claims
1. A timing method for a vehicle, characterized in that, The vehicle includes a timing device, the timing device includes a satellite positioning chip and a clock chip, and the timing method includes: Timing is performed by the clock chip; If a first condition is satisfied, the satellite positioning chip is awakened; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip; Calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip; Perform timing for the vehicle according to the calibrated time of the clock chip.
2. The timing method according to claim 1, wherein After waking up the satellite positioning chip, the timing method further includes: In the case where the satellite positioning chip does not receive a satellite signal, perform timing for the vehicle according to the timing time of the clock chip.
3. The timing method according to claim 1, wherein After timing is performed by the clock chip, the timing method further includes: In the case where the satellite positioning chip is in a sleep state, perform timing for the vehicle according to the timing time of the clock chip.
4. The timing method according to claim 1, characterized in that, The step of if a first condition is satisfied, waking up the satellite positioning chip, includes: In the case where the working state of the vehicle is a power-off state, if a first condition is satisfied, wake up the satellite positioning chip.
5. The timing method according to any one of claims 1 to 4, characterized in that, The step of performing timing for the vehicle includes: Perform timing for the vehicle in the case where a second condition is satisfied; Wherein, the second condition includes at least one of the following: Obtaining that the working state of the vehicle changes from a power-off state to a power-on state; Receiving a timing synchronization request of the vehicle.
6. The timing method according to claim 1, wherein The timing device further includes a rechargeable power source, and the timing method further includes: In the case where the working state of the vehicle is a power-off state, supply power to the timing device through the rechargeable power source.
7. The method according to claim 1, characterized in that, After timing is performed by the clock chip, the timing method further includes: In the case where the working state of the vehicle is a power-on state, perform a detection operation on the environment where the vehicle is located to obtain an environment detection result; In the case where the environment detection result indicates that there is a satellite signal in the environment where the vehicle is located, wake up the satellite positioning chip to receive the satellite signal; Calibrate the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip; Perform timing for the vehicle according to the calibrated time of the clock chip.
8. A timing device for a vehicle, characterized in that, The vehicle includes a timing device, the timing device includes a satellite positioning chip and a clock chip, and the timing device includes: A timing module for timing through the clock chip; A wake-up module for waking up the satellite positioning chip if a first condition is satisfied; wherein, the first condition includes reaching the wake-up time of the satellite positioning chip or receiving a wake-up signal for the satellite positioning chip; A calibration module for calibrating the time of the clock chip according to the satellite time in the satellite signal received by the satellite positioning chip; A timing module for performing timing for the vehicle according to the calibrated time of the clock chip.
9. A vehicle, characterized in that, The vehicle includes: a timing device, a processor, and a memory storing computer program instructions; The time service device includes a satellite positioning chip and a clock chip; when the processor executes the computer program instructions, the time service method for a vehicle as described in any one of claims 1-7 is implemented.
10. A computer-readable storage medium, characterized in that, Computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by a processor, the time service method for a vehicle as described in any one of claims 1-7 is implemented.
11. A computer program product, characterized in that, When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device is caused to execute the time service method for a vehicle as described in any one of claims 1-7.