Unlock instant, AI-driven research and patent intelligence for your innovation.

Single signal wire synchronous clock transfer method

A synchronous clock and single-signal technology, applied in multiplex communication, time-division multiplex system, electrical components, etc., can solve the problem of cost reduction of clock synchronization transmission, and achieve the effect of improving reliability and reducing cost

Active Publication Date: 2013-08-28
CHINA ELECTRIC POWER RES INST +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus greatly reducing the cost of clock synchronization transmission

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single signal wire synchronous clock transfer method
  • Single signal wire synchronous clock transfer method
  • Single signal wire synchronous clock transfer method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The clock synchronization time synchronization includes two parts of information, a, the second pulse signal at the whole second moment; b, the time information message represented by the current second pulse signal. The whole second pulse signal generally takes the rising edge or falling edge of the signal as the whole second time calibration according to different systems, and the error is in the order of us. All but one return level between each full-second pulse is normally low or normally high. If the time message information is synthesized into the second pulse signal line, it will result in multiple rising and falling edge signals in each full second time. If the traditional full second pulse receiving method is used to receive, it will cause the clock receiving device to be incorrect. A full-second pulse signal was identified and caused time confusion at the receiver.

[0024] The clock synchronization signal source side synthesizes the whole second time pulse ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a single signal wire synchronous clock transfer method, which is a technology for time sharing multiplex transfer of second pulse signals and time packet information on a same signal wire or an optical transmission media. The method can only use the single signal wire or an optical cable for transferring the reference time synchronous signals between equipment which need torealize the time synchronization, thereby greatly reducing the cost.

Description

technical field [0001] The invention relates to the fields of clock synchronization and high-precision synchronous time synchronization among power system equipment, and in particular to a single signal line synchronous clock transmission method. Background technique [0002] With the continuous improvement of clock synchronization requirements for secondary measurement equipment in power systems, secondary measurement equipment such as relay protection devices, fault recording, fault distance measurement, and phasor measurement generally require GPS time synchronization, and the time synchronization accuracy requirements Higher (general accuracy requirement <±1us), two signal lines of whole second pulse (1PPS) and time information message are usually used as the clock synchronization signal between devices. The rising edge or falling edge of the whole second pulse is used as the calibration signal of the whole second time, and the time message signal describes the time i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 熊敏张辉张金平汤飞张丽坤程春和
Owner CHINA ELECTRIC POWER RES INST