Time synchronizing method of distributed multi-port device and distributed multi-port system

A time synchronization, multi-port technology, applied in the time synchronization of distributed multi-port devices, distributed multi-port systems, and can solve problems such as time synchronization of service boards

Active Publication Date: 2018-01-12
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a time synchronization method for distributed multi-port devic...

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  • Time synchronizing method of distributed multi-port device and distributed multi-port system
  • Time synchronizing method of distributed multi-port device and distributed multi-port system
  • Time synchronizing method of distributed multi-port device and distributed multi-port system

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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] figure 1 It is a schematic flow diagram of a time synchronization method for a distributed multi-port device of the present invention;

[0021] see figure 1 , the time synchronization method of the distributed multi-port device of the present embodiment is applied to the main control board of the distributed multi-port device, such as CPU, and may include the following steps:

[0022] S11: Obtain an external clock signal for time synchronization.

[0023] S12: Lock the local time scale counter value of the service board according to the external clock signal, and acquire the local time sc...

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Abstract

The invention provides a time synchronizing method of a distributed multi-port device and a distributed multi-port system. The time synchronizing method comprises the steps of acquiring local time mark counter value of a business board locked by an external clock signal, acquiring the external lock clock signal, and using a PID (proportion-integration-derivation) control algorithm to adjust external crystal oscillator circuit frequency according to the external clock signal so that the local time mark counter value is approximate to the external clock signal. The method and system according tothe invention have the advantages that the local time mark counter value of the business board can be kept consistent to the external clock signal so that time synchronization is achieved for the local time mark counter of the business board and the external clock signal; especially, all business boards in a distributed multiport device having multiple ports on the multiple business boards are kept consistent to the external clock signal, and the business boards are globally synchronized in time aspect.

Description

technical field [0001] The invention relates to the technical field of time synchronization of distributed multi-port devices, in particular to a time synchronization method for distributed multi-port devices and a distributed multi-port system. Background technique [0002] With the development of informatization, there is a need for information integration and multi-terminal transmission in many industries and fields, especially in the field of industrial control, this demand is more prominent. [0003] At present, distributed multi-port devices, especially multi-port distributed multi-port devices with multi-service boards, can be used to realize information integration and multi-terminal transmission. The sending time of service boards needs to be synchronized to make distributed multi-port devices And the receiving terminal realizes the corresponding functions. The realization of the above functions by distributed multi-port equipment mainly depends on the time synchron...

Claims

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Application Information

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IPC IPC(8): H04J3/06
Inventor 陈创陈文睿张海川王幸钟华李津蔡静文刘一民张璞
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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