High-precision synchronous timing system

Abstract

The invention relates to the technical field of synchronous time service, and discloses a high-precision synchronous time service system, which comprises a synchronous time service module, a synchronous time receiving module, an upper computer and a lower computer; wherein the synchronous time service module is connected with the upper computer; the lower computer is respectively connected with the synchronous time receiving module; the synchronous time service module is used for completing data communication with an upper computer, performing encoding operation on the GPS time information and the GPS pulse per second signal, performing photoelectric conversion processing, converting the GPS time information and the GPS pulse per second signal into optical signals, and sending the optical signals to the synchronous time receiving module through an optical fiber; the synchronous time receiving module is used for carrying out photoelectric conversion on the received optical signal and then outputting synchronous time service data to a lower computer through decoding operation processing. According to the invention, not only can remote time service be realized, but also synchronous time service precision is high. In addition, synchronous time service of a plurality of instrument channels can be realized by using a plurality of groups of synchronous time service modules and time receiving modules, wherein the time service precision of each channel is independent and does not influence each other.

Description

technical field [0001] The invention relates to the technical field of time service, in particular to a high-precision synchronous time service system. Background technique [0002] Most of the existing high-precision timing technology is a special instrument, that is, the instrument is only used to complete the timing work, such as GPS timing module, Beidou timing module, etc. The timing information provided by the special instrument includes both time information, second pulse signal, or only time signal. This type of timing module is generally used for timing operations of local instruments, and can realize ns-level precision timing services, but cannot perform remote timing. The general time service distance of special instruments is about 100 meters. When the distance is too far, it is necessary to add auxiliary equipment such as time service signal forwarding equipment to complete time service. Other non-high-precision time service technologies use network time servi...

AI Technical Summary

Problems solved by technology

Other non-high-precision time service technologies use network time service servers and other equipment and certain software algorithms to complete long-distance service, but the timing accuracy of this technology using network time service servers and other equipment for time service is poor. The timing accuracy is only 50ms

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