CN102809926A

CN102809926A - Multi-channel timing device of astronomical telescope

Info

Publication number: CN102809926A
Application number: CN2012102705578A
Authority: CN
Inventors: 许占伟; 王歆
Original assignee: Purple Mountain Observatory of CAS
Current assignee: Purple Mountain Observatory of CAS
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2012-12-05
Anticipated expiration: 2032-07-31
Also published as: CN102809926B

Abstract

A multi-channel timing device of an astronomical telescope comprises a reference clock source, an astronomical observation terminal, a time distributor and a computer. The astronomical observation terminal comprises N sub-terminals, the time distributor comprises time modules corresponding to the N sub-terminals, each time module is provided with a timing signal input end, a triggering end and a time signal output channel, a timing signal output end of the reference clock source is connected with the timing signal input end of each clock module, synchronous signal output ends of the sub-terminals of the astronomical observation terminal are connected with the triggering ends of the corresponding time modules, and the time signal output channels of the time modules are connected with the computer. Various accurate time signals can be acquired from the single clock source and are synchronous with terminal signals, so that expenditure is saved, failure rate is reduced, stability of a system is improved, and maintainability is enhanced.

Description

Astronomical telescope hyperchannel timing device

Technical field

The present invention relates to a kind of astronomical telescope hyperchannel timing device; It utilizes GPS or triones navigation system as the reference clock source; With its second signal obtain more precise time as timing signal input divider; Like 0.1 Millisecond and higher; Simultaneously can the multi-terminal equipment of separate unit astronomical telescope or the multichannel synchronizing signal of many unit/terminal astronomical telescopes be imported divider as trigger pip with the asynchronous working mode, can obtain and the corresponding multichannel vernier time signal output of multichannel synchronizing signal.

Background technology

Precise time is the extremely important parameter that astronomical sight needs, and time system is the requisite parts of astronomical telescope, and therefore every astronomical telescope terminal is typically equipped with GPS equal time system so that precise time to be provided.The advantage of the heavy caliber high light of some heavy caliber telescope utilizations power own changes the function of single task role gradually, develops to the multitask direction, hopes to be equipped with the plurality of devices terminal, can adopt asynchronous system work; Each terminal must possess independently time system, and hyperchannel accurate timing device can provide the time signal with a plurality of terminal data signal Synchronization, and every circuit-switched data independent transmission; A plurality of unit/terminal telescopes not far from one another in the same survey station also can pass through the hyperchannel timing device, obtain the time signal that needs separately; This device both can be saved certain funds, reduced the telescope failure rate, improved the telescope job stability, also brought great convenience to plant maintenance.

Summary of the invention

The present invention provides a kind of astronomical telescope hyperchannel timing device, and this device can provide multichannel, synchronous vernier time signal for astronomical sight.

The technical scheme of accomplishing the foregoing invention task is: astronomical telescope hyperchannel timing device; Form by reference clock source, astronomical sight terminal, time distributior and computing machine; Said astronomical sight terminal is made up of N sub-terminal; Each sub-terminal isolates with photoisolator each other; Said time distributior and N sub-terminal time corresponding module formed, and each time module is provided with timing signal input end, trigger end and time signal output channel, and the timing signal output in said reference clock source and the timing signal input end of each time module are connected; The trigger end of the synchronous signal output end at each sub-terminal and time corresponding module is connected in the said astronomical sight terminal, and the time signal output channel of each time module is connected with computing machine.

As further improvement of the present invention, said astronomical telescope hyperchannel accurate timing device is used to carry out the following step:

Step 1 is obtained GPS or triones navigation system time signal by the reference clock source;

Step 2 with the time signal of GPS or triones navigation system as timing signal, input time divider each time module;

Each sub-terminal general of step 3 synchronizing signal separately is as the corresponding time module of trigger pip divider input time;

When step 4 had the trigger pip input when the trigger end of certain time module, this time module was benchmark with the timing signal, and timing signal is subdivided into more precise time;

The precise time that this time module of step 5 will be received trigger pip is as time signal;

Each time module of step 6 is packed time signal separately, adopts the RS485/RS422 agreement with the serial ports packet mode time signal bag to be sent to computing machine through the time corresponding signal output channels.。

As further improvement of the present invention, the time signal in the said step 2 is a second signal, in the said step 4 with second signal segmentation be 0.1 Millisecond or higher.

This device will obtain GPS or triones navigation system time signal as the reference clock source; With its second signal as timing signal; Second signal divider input time; The more precise time that needs in the acquisition astronomical sight after the processing of elapsed time divider according to system requirements, can be as accurate as 0.1 Millisecond and higher; Simultaneously; At a plurality of terminals of separate unit astronomical telescope or during many telescopical single terminal works; The synchronizing signal of output is as the triggering input of time distributior, and when only the triggering input at the terminal had signal, the just corresponding triggering input signal separately of time distributior was exported corresponding precise time signal; Asynchronous system work can be adopted in a plurality of terminals, and is independent separately; This time signal exports computing machine to the serial ports bag, adopts the work of RS485/RS422 agreement, and antijamming capability is strong, can be in long Distance Transmission.

Description of drawings

Fig. 1 is the structured flowchart of the embodiment of the invention 1.

Embodiment

Embodiment 1; Astronomical telescope hyperchannel timing device; With reference to Fig. 1; Form by reference clock source 1, astronomical sight terminal 2, time distributior 3 and computing machine 4; Astronomical sight terminal 2 is by the first sub-terminal 21a, the second sub-terminal 21b ... The sub-terminal 21n of N forms, time distributior 3 by the very first time module 31a corresponding, the second time module 31b with N sub-terminal ... N time module 31n forms, and each time module is provided with timing signal input end 311, trigger end 312 and time signal output channel 313.The timing signal input end 311 of reference clock source timing signal output 11 and each time module is connected; Each

sub-terminal

21a, 21b ... The synchronous signal output end 22a of 21n, 22b ... The trigger end 312 of 22n and time corresponding module is connected, and the time signal output channel 312 of each time module is connected with computing machine 4.

Carry out according to following steps:

Step 1 is obtained GPS or triones navigation system time signal by reference clock source 1;

The step 2 first sub-terminal 21a, the second sub-terminal 21b ... N sub-terminal with GPS or triones navigation system second signal as timing signal, input time divider each time module of 3;

Step 3 will be separately synchronizing signal as the very first time module 31a of trigger pip divider input time, the second time module 31b ... N time module 31n;

Step 4 is when certain time module; For example the trigger end 312 of very first time module 31a has trigger pip when input, very first time time module 31a with second signal be benchmark, and with second signal subdivision be precise time more; According to system requirements, can be as accurate as 0.1 Millisecond and higher;

Precise time when step 5 very first time module 31a time module will be received trigger pip is as

time signal.Module

31b, 31c At All Other Times ... ..31n the mode of acquisition time signal is identical with very first time module 1a, repeats no more.

Each time module of step 6 is packed time signal separately, adopts the RS485/RS422 agreement with the serial ports packet mode time signal bag to be sent to computing machine 4 through time corresponding signal output channels 313.

Claims

1. astronomical telescope hyperchannel timing device; It is characterized in that; This timing device is made up of reference clock source, astronomical sight terminal, time distributior and computing machine; Said astronomical sight terminal is made up of N sub-terminal; Said time distributior and N sub-terminal time corresponding module formed, and each time module is provided with timing signal input end, trigger end and time signal output channel, and the timing signal output in said reference clock source and the timing signal input end of each time module are connected; The trigger end of the synchronous signal output end at each sub-terminal and time corresponding module is connected in the said astronomical sight terminal, and the time signal output channel of each time module is connected with computing machine.

2. astronomical telescope hyperchannel timing device according to claim 1 is characterized in that, said astronomical telescope hyperchannel accurate timing device is used to carry out the following step:

Step 2 with the time signal of GPS or triones navigation system as timing signal, input time divider each time mould

Piece;

Each time module of step 6 is packed time signal separately, adopts the RS485/RS422 agreement with the serial ports packet mode time signal bag to be sent to computing machine through the time corresponding signal output channels.

3. astronomical telescope hyperchannel timing device according to claim 2 is characterized in that, the timing signal in the said step 2 is a second signal, in the said step 4 with second signal subdivision be 0.1 Millisecond or higher.