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Time synchronization device and synchronization method

A time synchronization device and time synchronization technology, which are applied in the directions of generating/distributing signals, automatic control of power, electrical components, etc., can solve the problem of inability to obtain instantaneous values, and achieve accurate time synchronization and reduce time synchronization errors.

Inactive Publication Date: 2021-09-07
山东中瑞电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, for a 16-bit time counter equipped in the chip, when the counting unit is nanoseconds, it means that the time counter is counting cyclically between about 0 and 9 seconds, so the chip can only use the current time counter when receiving / transmitting The count value (that is, one value of 0 to 9 seconds) is used as the receiving / transmitting time, and the instantaneous value of receiving / transmitting cannot be obtained

Method used

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  • Time synchronization device and synchronization method

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Embodiment

[0055] Such as figure 1 As shown, it includes a data packet processing module. The data packet processing module is connected to a central processing unit and a time counting module. The time counting module is connected to the central processing unit and a phase-locked loop module. The phase-locked loop module is connected to the central processing unit. have operating devices;

[0056] The data packet processing module includes a communication unit, a time counter and a signal synchronization unit, and the time counter is connected to the communication unit and the signal synchronization unit respectively, and the communication unit is connected to the operating device; the communication unit is used to receive and transmit data packets, and the time synchronization device in the present invention communicates circuit to send or receive data packets.

[0057] The time counting module includes a time of day counter, the time of day counter is connected to the first storage u...

Embodiment 2

[0067] A time synchronization method, comprising the following steps:

[0068] Step 1: Receive the data packet, obtain the first time value and the second time value; in step 1, the communication unit receives the first synchronization data packet M1 transmitted by the running device, and the time when the first synchronization data packet M1 is transmitted by the running device is The time when the first time value is received by the operating device is defined as the second time value. In the present invention, the first time value and the second time value can be regarded as the transmission time of the synchronization data packet and the reception time of the delayed response data packet of the precision time synchronization protocol standard of the network measurement and control system.

[0069] Step 2: Obtain the first time count value and the second time count value according to the time of receiving the first synchronization data packet M1 and transmitting the first d...

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Abstract

The invention relates to the technical field of time synchronization control, in particular to a time synchronization device and a time synchronization method. The time synchronization device comprises a data packet processing module, the data packet processing module is connected with a central processing unit and a time counting module, the time counting module is connected with the central processing unit and a phase-locked loop module, the phase-locked loop module is connected with the central processing unit, and the data packet processing module is connected with an operation device. The data packet processing module comprises a communication unit, a time counter and a signal synchronization unit, the time counter is respectively connected with the communication unit and the signal synchronization unit, and the communication unit is connected with the operation device; the time counting module comprises an intraday time counter, the intraday time counter is connected with the first storage unit and the second storage unit, the intraday time counter is connected with the signal synchronization unit, and the second storage unit is connected with the phase-locked loop module. The invention provides a time synchronization device and a time synchronization method which can obtain an instantaneous value and accurately synchronize with a main clock.

Description

technical field [0001] The invention relates to the technical field of time synchronization control, in particular to a time synchronization device and a synchronization method. Background technique [0002] According to the precision time synchronization protocol standard of the network measurement and control system, the time offset is obtained by calculating the four time quantities of the synchronization time of the main clock, the synchronization time of the expansion clock, the actual transmission time of the expansion clock and the actual reception time of the main clock , and then the extended clock performs time synchronization accordingly. The general transmission chip can provide the time when receiving or transmitting through the time counter. However, some chips can only provide time count values ​​for a period of time, rather than instantaneous values. For example, for a 16-bit time counter equipped in the chip, when the counting unit is nanoseconds, it means...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/12H03L7/18
CPCG06F1/12H03L7/18
Inventor 王梓龙高述辕李为毕立颖吕栋
Owner 山东中瑞电气有限公司