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Method for automatically measuring IRIG-B time service signal propagation time delay, time service slave station and time service system

A technology for signal propagation and automatic measurement, applied in transmission systems, digital transmission systems, time-division multiplexing systems, etc., can solve problems such as manual measurement of propagation time delay, achieve practical promotion and application, reduce technical requirements, The effect of reducing workload

Active Publication Date: 2020-06-12
CHENGDUSCEON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the cumbersome problem of manual measurement and input of the propagation delay existing in the existing IRIG-B (DC) timing system, the purpose of the present invention is to provide a method for automatically measuring the propagation delay of the IRIG-B timing signal, and the timing from station and timing system

Method used

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  • Method for automatically measuring IRIG-B time service signal propagation time delay, time service slave station and time service system
  • Method for automatically measuring IRIG-B time service signal propagation time delay, time service slave station and time service system
  • Method for automatically measuring IRIG-B time service signal propagation time delay, time service slave station and time service system

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Embodiment 1

[0051] Such as Figure 1~3 As shown, the method for automatically measuring the propagation delay of the IRIG-B timing signal provided in this embodiment may, but is not limited to, include the following steps S101-S106.

[0052] S101. Receive the first standard IRIG-B time code signal from the time service master station side, wherein the first standard IRIG-B time code signal is generated on the time service master station side according to the time information of the master station clock.

[0053] In the step S101, the first standard IRIG-B time code signal is a standard IRIG-B (DC) serial time code signal, and its generation method is an existing conventional method.

[0054] S102. Complete the coarse synchronization of the clocks of the slave stations according to the first standard IRIG-B time code signal.

[0055] In the step S102, the coarse synchronization method is an existing conventional time synchronization method, which may be, but not limited to, the following ...

Embodiment 2

[0072] Such as Figure 4As shown, on the basis of the technology in Embodiment 1, this embodiment provides a timing slave station for implementing the method described in Embodiment 1, including a signal transceiver unit, a coarse synchronization processing unit, a signal generation unit, and a delay measurement Unit; the signal transceiving unit is used to receive the first standard IRIG-B time code signal and the class IRIG-B time code signal from the time service master station side on the one hand, and is used to feed back to the time service master station through a communication link on the other hand The second standard IRIG-B time code signal, wherein, the first standard IRIG-B time code signal is generated at the time service master station side according to the time information of the master station clock, and the second standard IRIG-B time code signal is generated according to the time information of the master station clock The first standard IRIG-B time code sign...

Embodiment 3

[0076] Such as Figure 5 As shown, this embodiment also provides a timing system based on the technology of Embodiment 2, including a timing master station and a timing slave station as described in Embodiment 2, wherein the timing master station includes a signal generating module AND OR gate element; the signal generation module is used to generate the first standard IRIG-B time code signal according to the time information of the master station clock, and transmit the first standard IRIG-B time code signal to the OR gate element The first input end of the OR gate element; the second input end and output end of the OR gate element are respectively connected to the signal transceiving unit of the timing slave station through the same communication link.

[0077] Optimally, the signal generation module is also used to stop the generation of the first standard IRIG-B time code signal when it is found that the second input terminal of the OR gate element is switched from a signa...

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Abstract

The invention relates to the technical field of time synchronization, and discloses a method for automatically measuring IRIG-B time service signal propagation time delay, a time service slave stationand a time service system. That is to say, coarse synchronization of slave station clocks is carried out at a time service slave station side; a standard IRIG-B time code signal is fed back to the time service master station based on the coarse synchronization result; and finally, acquiring propagation time delay of the IRIG-B time service signal based on an OR logic processing signal obtained bythe master-slave station standard IRIG-B time code signal. Therefore, the time service slave station can automatically measure to obtain the time delay information for further accurate synchronization, meanwhile, the whole measurement process does not need manual participation, manual deviation can be avoided, the measurement accuracy can be ensured, and the technical requirement level of equipment for use and maintenance personnel can be reduced.

Description

technical field [0001] The invention belongs to the technical field of time synchronization, and in particular relates to a method for automatically measuring the propagation time delay of an IRIG-B timing signal, a timing slave station and a timing system. Background technique [0002] In the traditional time synchronization technology, IRIG-B (DC) (referred to as B code, is a serial time code formulated by the Telecommunication Group to which IRIG belongs, and is used for time synchronization of various systems. Its frame length is 1s, including 100 symbols; it is coded by pulse width modulation, and there are three symbols of width, which represent "0", "1" and "P" respectively; in addition, DC in brackets means that the IRIG-B time code signal adopts the DC square Wave signal mode) time service system, if high-precision time synchronization is required, the propagation delay between the time service master and slave stations needs to be manually calibrated, and other tes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04J3/06
CPCH04L43/0852H04J3/0635
Inventor 熊嘉明许俊董道鹏章巍
Owner CHENGDUSCEON ELECTRONICS
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