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Switch clock synchronization controller and control method for time-triggered network

A clock synchronization, time-triggered technology, used in time division multiplexing systems, electrical components, multiplexing communications, etc., to ensure synchronization reliability and recoverability, facilitate fault isolation and recovery, and ensure network-wide synchronization Effect

Active Publication Date: 2017-09-08
XIAN MICROELECTRONICS TECH INST
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Relevant patent achievements temporarily do not have a time-triggered network-oriented switch clock synchronization controller and its control method

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  • Switch clock synchronization controller and control method for time-triggered network
  • Switch clock synchronization controller and control method for time-triggered network

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] see figure 1 , a time-triggered network-oriented switch clock synchronization controller, including a solidification module 1 receiving PCF frames, the solidification module 1 is connected to a compression module 2 receiving an SM number, the compression module 2 is connected to a group detection module 5, and an optimal compression point selection module 3. The state machine control module 6 and the local clock module 4, the state machine control module 6 is connected to the optimal compression point selection module 3, and the local clock module 4 is connected to the optimal compression point selection module 3.

[0039] The curing module 1 is used to analyze the received PCF frame, extract the transmission time carried, and calculate the transparent clock; then according to the receiving time and the maximum transmission delay, obtain the curing point of the ...

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Abstract

The invention discloses a switch clock synchronization controller and a control method for a time-triggered network. The switch clock synchronization controller comprises a curing module used for restoring a PCF frame sending sequence, a compression module used for calculating an SM clock deviation average value, an optimal compression point selection module, a local clock module used for correcting a local clock and generating a new PCF frame, a cluster detection module used for detecting a network state and a state machine control module used for coordinating the work of the modules. The curing module imports a transparent clock for identifying the transmission delay and a maximum transmission delay for restoring the sending sequence and moments of the PCF frames for solving the problem of lagged clock synchronization; the compression module adopts a hardware mode to realize a three-level streamline dynamic compression algorithm for improving the calculation precision and efficiency of clock synchronization; and a compression point having the largest member number and closest to a receiving window end moment is used as the optimal compression point to ensure that all nodes in a synchronization state in the network can be detected.

Description

technical field [0001] The invention belongs to the field of time-triggered networks, and in particular relates to a time-triggered network-oriented switch clock synchronization controller and a control method. Background technique [0002] As a highly reliable and deterministic time-triggered network, the switch sends synchronization information to each node in the network. The synchronization information of each node adjusts the local clock to achieve synchronization with the switch, thereby realizing the synchronization of the entire network. Therefore, the switch clock synchronization controller and control method directly affect the synchronization effect of the entire time trigger network. [0003] A cluster coupler unit and a method for synchronizing multiple clusters in a time-triggered network (Chinese patent CN101512984) theoretically describes the method for synchronizing clusters in a time-triggered network, but does not involve specific implementation; network a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638H04J3/0682
Inventor 王瑞晓赵海婷卢飞曲超
Owner XIAN MICROELECTRONICS TECH INST
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