High-precision clock synchronization and time service method and device

Abstract

The invention relates to a high-precision clock synchronization and time service device, comprising a satellite signal receiving module, a clock synchronization and time keep module and an FPGA chip which are connected in sequence. The method comprises the steps that the satellite signal receiving module receives a satellite time service signal; the clock synchronization and time keep module carries out time service of an internal clock on the satellite time service signal and sends a periodic pulse per second timing signal and a time service serial port data signal to the FPGA chip; the FPGAchip dynamically generates collection time stamp data according to the periodic pulse per second timing signal and the time service serial port data signal, adds the collection time stamp data to received sensor serial port data and forwards the data to a serial port server; and the time stamp data is directly provided for a computer, and the time stamp data is provided for a bathymetric side-scansonar host. The high-precision clock synchronization and time service device is simple in integrated structure and clever and simple in programming mode, so a system is guaranteed to work continuously, reliably and stably. The high-precision clock synchronization and time service device is high in expansibility. The number of serial port and pulse input port nodes can be increased or reduced according to condition.

Description

technical field [0001] The present invention is suitable for the clock synchronization and timing function between the internal equipment of the underwater robot, specifically a high-precision clock synchronization timing method and device, which uses the underwater robot to synchronize with the satellite timing signal when the underwater robot is on the water surface, and then passes the high-precision The crystal oscillator maintains the accuracy of underwater timekeeping, and uses the advantages of fast multi-channel parallelism of the FPGA module to provide high-precision synchronous clock signals and serial port timing signals for underwater robots, providing accurate, standard, safe and reliable time services for underwater robots . Background technique [0002] When the underwater robot is working underwater, there is no uniform timing standard for various internal equipment, which will cause the underwater robot to be unable to determine the corresponding time of var...

AI Technical Summary

Problems solved by technology

[0002] When the underwater robot is working underwater, there is no unified timing standard for various internal devices, which will cause the underwater robot to be unable to determine the corresponding time of various sensor data. It has a great impact on the accuracy of the control system and the operating system such as underwater high-precision measurement

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