PTP precise time protocol time service module in electric power time service and realizing method thereof

Abstract

The invention relates to a PTP precise time protocol time service module in electric power time service and a realizing method thereof; the PTP precise time protocol time service module comprises a main control chip, a time stamp PHY chip, a JTAG debug chip, a transformer, a state indicator lamp, a clock, and an indication light; an ARM chip receives the time information of a main control unit through a RS232 interface, and resolves to obtain time second information; the main control unit sends 1PPS, the ARM chip writes the time second information into the time stamp PHY chip, and the local time source is synchronized; the clock respectively provides a running clock for the ARM chip and a RMII communication clock source for the time stamp PHY chip; the JTAG debug chip debugs program operations and sets breakpoints; real time analysis is carried out; a PC machine obtains the ARM chip output debug information; when the ARM runs a PTP protocol operation task, the time stamp PHY chip uses a transformer + RJ45 interface to send a protocol message to the outer side. The technical effect can reach the nanosecond level precision.

Description

technical field [0001] The invention relates to a time service module in electric power time service, in particular to a PTP precision time protocol time service module in electric power time service and an implementation method. Background technique [0002] Many systems today are inseparable from the requirements of time synchronization, such as test and measurement systems, power systems, communication systems, industrial automation and distributed systems, etc., and with the expansion of the system scope and the development of decentralized control, each control node Time synchronization is becoming more and more important, especially in power systems. Due to the extensive and dispersed geographical scope, this requires that the actions of each device in the system be performed in accordance with a unified timing and beat to ensure that the system is coordinated and orderly. [0003] The current power system basically uses the GPS clock system for synchronization and tim...

AI Technical Summary

Problems solved by technology

[0003] The current power system basically uses the GPS clock system for synchronization and time service. This method has certain potential safety hazards, and later upgrades become very difficult and expensive.

Although the NTP protocol used can synchronize the system time, the accuracy deviation of the NTP protocol can reach the millisecond level, which cannot be used for those occasions that require microsecond or higher precision.

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