Domain controller time synchronization management method and system and vehicle

A domain controller and time synchronization technology, applied in time division multiplexing systems, electrical components, multiplexing communications, etc. Effects of time inconsistency, high reliability, high availability

Active Publication Date: 2022-01-04
深蓝汽车科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The rapid development of the new energy automobile industry has made the competition in the automobile market more and more fierce. The existing single-function vehicle controller can no longer adapt to the competition and meet the needs of consumers. Therefore, a domain controller with a multi-functional domain has emerged

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  • Domain controller time synchronization management method and system and vehicle
  • Domain controller time synchronization management method and system and vehicle
  • Domain controller time synchronization management method and system and vehicle

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with accompanying drawing.

[0050] Such as figure 1 As shown, in this embodiment, the domain controller includes MPU1 (microprocessor), MCU2 (micro control unit) and multiple ECU3 (electronic control units). MPU1 is a remote interactive functional domain controller with high-precision software RTC. The MPU1 is connected with an external NTP server and a GPS server through its internal 4G module to obtain network time information. MCU2 is a central controller with high-precision hardware RTC (real-time clock). MCU2 and MPU1 communicate through UART (Universal Asynchronous Receiver Transmitter) or SPI (Serial Peripheral Interface). ECU3 is a kind of general controller that meets specific needs, which can be called a specific functional domain, and the number of ECU3 is determined by specific engineering projects. ECU3 and MCU2 are connected through CAN.

[0051] In this embodiment, a domain controll...

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Abstract

The invention discloses a domain controller time synchronization management method and system and a vehicle; the method comprises the following steps: a time source of an MPU comprises an NTP, a GPS and an MCU, the MPU obtains and updates time from at least one of the NTP, the GPS and the MCU, and synchronizes the new time to the MCU; a time source of the MCU comprises an MPU and a hardware RTC, and the MCU obtains and updates time from at least one of the MPU and the hardware RTC and synchronizes the new time to the MPU and the ECU; the time source of the ECU comprises an MCU (Microprogrammed Control Unit); and the ECU obtains and updates the time from the MCU. The problem that when an existing domain controller operates for a long time and no network signal exists in the external environment, time among part of functional domains is not consistent due to power failure and restarting is solved.

Description

technical field [0001] The invention belongs to the technical field of time synchronization processing, and in particular relates to a domain controller time synchronization management method, system and vehicle. Background technique [0002] The rapid development of the new energy automobile industry has made the competition in the automobile market more and more fierce. The existing single-function vehicle controller can no longer adapt to the competition and meet the needs of consumers. Therefore, a domain controller with a multi-functional domain has emerged. The new domain controller integrates multiple functions and has certain interactive capabilities, which can provide consumers with a rich and colorful functional experience. At the same time, the multi-functional inter-domain information interaction of domain controllers also puts forward higher requirements for time accuracy. Multi-functional inter-domain time synchronization is to adopt a certain method to adjust ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667H04J3/0644H04J3/0638Y02P90/02
Inventor 何改革左健
Owner 深蓝汽车科技有限公司
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