Time synchronization method, time synchronization system and vehicle
A time synchronization and time technology, applied in the field of communication, can solve problems such as inconsistency of slave device clocks, clock crystal error accumulation, etc., to achieve the effect of reducing error accumulation and reducing load
Inactive Publication Date: 2020-02-04
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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Problems solved by technology
[0005] An object of the present invention is to provide a time synchronization method to solve the problem that the existing system runs for a long time and causes the clocks of each slave device to be inconsistent
Method used
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[0047] figure 1 is a schematic flowchart of a time synchronization method according to an embodiment of the present invention. The time synchronization method of this embodiment is used to complete the time synchronization process when the master device interacts with the slave device, and may include:
[0048] S10, in response to the synchronization request, acquire the time when the master device and the slave device complete at least one synchronization operation during interaction, wherein at least one synchronization operation together forms a time synchronization process;
[0049] S20 calculates and obtains the time deviation between the master device and the slave device in a time synchronization process according to the time;
[0050] S30 controls the slave device to adjust its own time according to the time deviation so as to complete the time synchronization process.
[0051] The time synchronization method in this embodiment obtains the time deviation in the time ...
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The invention provides a time synchronization method, a time synchronization system and a vehicle, and relates to the technical field of communication. The time synchronization method is used for completing a time synchronization process when a master device and a slave device interact, and comprises the following steps: in response to a synchronization request, obtaining the time of completing atleast one synchronization operation when the master device and the slave device interact, wherein the at least one synchronization operation forms a time synchronization process together; and performing calculating according to the time to obtain the time deviation of the master device and the slave device in one time of time synchronization process. According to the time synchronization method,the time deviation in the time synchronization process is obtained according to the interaction time of the master device and the slave devices, the time of the slave devices is adjusted through the time deviation, and therefore it is guaranteed that the time of the multiple slave devices is consistent with that of the master device, and the system load is reduced. In addition, error accumulationcaused by deviation of the clock crystal is reduced through continuous calibration of the slave device.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a hybrid transmission and a vehicle. Background technique [0002] At present, the field of autonomous driving technology is booming. Unmanned driving is a high-tech integration of data fusion, environmental perception, path planning, state recognition, and vehicle control. In this technical field, multi-sensor data collection such as cameras, radars, and GPS provides very important information for autonomous driving decisions. Environmental perception, as the visual nervous system of the entire autonomous driving, needs to fuse multi-sensor data for calculation and recognition, and then make appropriate decisions about the corresponding environment, and deliver them to the actuator for vehicle control. Therefore, in the field of automatic driving, how to accurately fuse the information of many sensors plays a vital role in the system's real-time and accurate acquisition o...
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Login to View More IPC IPC(8): H04J3/06
CPCH04J3/0638
Inventor 姬宏光
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD