CN211577432U

CN211577432U - Polling type on-line automatic delay compensation high-precision master-slave clock system

Info

Publication number: CN211577432U
Application number: CN201921940081.8U
Authority: CN
Inventors: 刘艾; 李振波
Original assignee: Shanghai Hillyton Electronics Technology Co ltd
Current assignee: Shanghai Hillyton Electronics Technology Co ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-09-25
Anticipated expiration: 2029-11-12

Abstract

The utility model discloses an online automatic time delay compensation high accuracy primary and secondary clock system of polling formula relates to high accuracy primary and secondary clock technical field. The utility model comprises a master clock and a plurality of slave clocks, wherein a timing and polling compensation module is arranged in the master clock; a timing compensation module is arranged in the sub-clock; the timing and polling compensation module is independently connected with the timing compensation module in each sub-clock; the master clock is in independent communication with each sub-clock through polling of an internal timing and polling compensation module; the timing and polling compensation module is connected with an external satellite clock system in real time through a clock signal receiving module; and the external satellite clock system adopts a GPS clock system or a Beidou clock system. The utility model discloses realize that the online individual communication time delay compensation of mother clock to every son clock among the primary and secondary clock system.

Description

Polling type on-line automatic delay compensation high-precision master-slave clock system

Technical Field

The utility model belongs to the technical field of high accuracy primary and secondary clock, especially, relate to an online automatic time delay compensation high accuracy primary and secondary clock system of polling formula.

Background

Along with the rapid development of the application of the primary and secondary clock system in the fields of industry, civil aviation and finance, the demand on the high-precision primary and secondary clock system is increasingly urgent. In the primary-secondary clock system, the distance between each secondary clock and the primary clock is different from several meters to several kilometers, and even the communication modes between the secondary clock and the primary clock are different. The original master-slave clock system rarely adopts communication compensation or adopts unified off-line delay compensation, and the high-precision requirement of the master-slave clock system cannot be met.

Through the retrieval, application number is 201020589634.2, the chinese utility model patent of title compensating device behind the clock pushes away, and the technique that this patent was proposed can only compensate to single sub-clock, can not carry out the pertinence compensation to a plurality of word clocks in the same system, and the compensation wholeness is inefficient, consequently to above problem, provides a polling formula online automatic time delay compensation high accuracy primary and secondary clock system and has important meaning.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an online automatic time delay compensation high accuracy primary and secondary clock system of polling formula realizes the online independent communication time delay compensation of primary clock to every secondary clock in the primary and secondary clock system.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model discloses a polling type on-line automatic delay compensation high-precision master-slave clock system, which comprises a master clock and a plurality of slave clocks;

a timing and polling compensation module is arranged in the master clock;

a timing compensation module is arranged in the sub-clock;

and the timing and polling compensation module is independently connected with the timing compensation module in each sub-clock.

Further, the master clock communicates with each of the sub-clocks individually by polling through an internal timing and polling compensation module.

Furthermore, the timing and polling compensation module is connected with an external satellite clock system in real time through a clock signal receiving module.

Further, the external satellite clock system adopts a GPS clock system or a Beidou clock system.

Compared with the prior art, the utility model discloses a following advantage:

1. the on-line polling compensation of the master clock in the master clock system and the slave clock system is realized;

2. the pertinence compensation of different sub-clocks in the same system can be realized;

3. and aiming compensation for different communication modes in the same system.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a polling type online automatic delay compensation high-precision master-slave clock system of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-mother clock, 2-timing and polling compensation module, 3-timing compensation module and 4-sub clock.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "in" and the like are used for indicating an orientation or positional relationship, merely for convenience of description and for simplicity of description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Referring to fig. 1, the polling type on-line automatic delay compensation high-precision master-slave clock system of the present invention includes a master clock 1 and eight slave clocks 4, wherein a timing and polling compensation module 2 is arranged in the master clock 1; a timing compensation module 3 is arranged in the sub-clock 4; the timing and polling compensation module 2 is independently connected with the timing compensation module 3 in each sub-clock 4; the master clock 1 adopts a polling method to realize delay compensation calculation of a single sub-clock 4 one by one, obtains communication delay parameters of the master clock and each sub-clock, and transmits the communication delay parameters to the sub-clocks; after each sub-clock 4 receives the timing compensation command of the master clock 1 to the sub-clock, the temporary short circuit in the communication line is received and sent; and recovering the normal communication line after the communication delay compensation is finished, obtaining the delay compensation parameter, storing the delay compensation parameter in the local, receiving the time signal transmitted by the master clock, and then performing communication delay compensation according to the compensation parameter to obtain high-precision time display.

Wherein, be provided with the communication unit in the mother's clock 1, the communication unit contains three module, time service module, communication module and polling compensation module 2, and polling compensation module 2 work is at specific working method: and calculating the transmission delay of the single sub-clock 4 by using a high-precision timer of the master clock 1 and transmitting and receiving the delay compensation messages, and transmitting the delay compensation messages to the corresponding sub-clocks.

Each sub-clock 4 has a unique identification code inside the system; the timing compensation module 3 works in a specific working mode: after receiving a polling delay command with a unique identification code sent by the master clock 1, the communication module carries out a delay compensation mode, short circuits the internal receiving and sending loops, and carries out delay compensation calculation by matching with the master clock 1

The timing and polling compensation module 2 is connected with an external satellite clock system in real time through a clock signal receiving module.

Wherein, the external satellite clock system adopts a GPS clock system or a Beidou clock system.

Compared with the prior art, the utility model discloses a following advantage:

the utility model discloses an online automatic time delay compensation high accuracy primary and secondary clock system of polling formula has realized the online polling compensation sub-clock communication time delay of primary and secondary clock in the primary and secondary clock system, can compensate the pertinence of different sub-clocks in same system to the pertinence to different communication modes in the same system compensates.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a polling formula is automatic time delay compensation high accuracy primary and secondary clock system on line, includes mother clock (1) and a plurality of sub-clock (4), its characterized in that:

a timing and polling compensation module (2) is arranged in the master clock (1);

a timing compensation module (3) is arranged in the sub-clock (4);

the timing and polling compensation module (2) is independently connected with the timing compensation module (3) in each sub-clock (4).

2. A polling type on-line automatic delay compensation high-precision master-slave clock system according to claim 1, characterized in that the master clock (1) is polled by an internal timing and polling compensation module (2) to communicate with each slave clock (4) separately.

3. A polling type on-line automatic delay compensation high-precision master-slave clock system according to claim 1, wherein the timing and polling compensation module (2) is connected with an external satellite clock system in real time through a clock signal receiving module.

4. The polling type on-line automatic delay compensation high-precision master-slave clock system according to claim 3, wherein the external satellite clock system adopts a GPS clock system or a Beidou clock system.