Time synchronization method, device and system, storage medium and vehicle

A time offset and synchronization request technology, applied in the field of vehicles, can solve problems such as errors, misleading vehicle developers, and inability to solve vehicles

Inactive Publication Date: 2020-05-22
BEIQI FOTON MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in the field of intelligent driving with ultra-high real-time requirements, if there is a 1ms delay in the road conditions and CAN messages during the driving process of the resto...

Method used

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  • Time synchronization method, device and system, storage medium and vehicle
  • Time synchronization method, device and system, storage medium and vehicle
  • Time synchronization method, device and system, storage medium and vehicle

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Embodiment Construction

[0048] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0049] In related technologies, there is a millisecond or microsecond level error between the road condition and the CAN message during the driving of the vehicle, which may cause that the road condition and the CAN message during the driving of the vehicle are still can match, but over time, the road conditions and CAN messages during vehicle driving will not match completely, resulting in that the road conditions and CAN messages during vehicle driving cannot provide vehicle developers with solutions to problems when they are played back in the laboratory. valid reference.

[0050] In view of this, the present disclosure provides a time synchronization met...

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Abstract

The invention relates to a time synchronization method, device and system, a storage medium and a vehicle. The method comprises the following steps: associatively storing a current road condition image acquired by an image acquisition device and a current moment displayed by a first clock; obtaining a time offset; sending a first synchronization request including a time offset to the micro-controlunit; and receiving and storing the bus data associated with the current moment displayed by the second clock and sent by the micro-control unit. In this way, during the driving process of the vehicle, the second clock of the micro-control unit can be calibrated, the acquired bus data is associated with the current time displayed by the second clock. Further, the microprocessor can store the busdata associated with the current moment displayed by the second clock, the stored image association time is synchronized with the bus data association time, so that the time error of the image and thebus data is effectively reduced, the image is matched with the bus data, and an effective reference for solving the problem can be provided for a vehicle developer.

Description

technical field [0001] The present disclosure relates to the field of vehicles, and in particular, to a time synchronization method, device, system, storage medium and vehicle. Background technique [0002] In the development and verification phase of the vehicle, it is necessary to record real-time road conditions and real-time bus CAN (Controller Area Network, Controller Area Network) messages for a long time without interruption, so as to return to the laboratory for real-time on-site restoration of road conditions and CAN during vehicle driving. The report provides a factual basis for analyzing and solving problems. Especially in the field of intelligent driving with ultra-high real-time requirements, if there is a 1ms delay in the road conditions and CAN messages during the driving process of the restored vehicle, it may mislead the vehicle developer and lead it into the wrong direction, resulting in Delivery delay, more serious may not be able to solve the problem of ...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04L12/40
CPCH04J3/0638H04L12/40006H04L2012/40215
Inventor 李佳
Owner BEIQI FOTON MOTOR CO LTD
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