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Modularized multisource input seamless switching method for satellite synchronous clock device

A technology of synchronous clock and seamless switching, which is applied to clocks driven by synchronous motors, synchronization, clocks, etc., and can solve problems such as single reception and processing

Inactive Publication Date: 2011-11-23
上海申贝科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional satellite clock device adopts an integral design, a single receiving process, and only one clock source

Method used

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  • Modularized multisource input seamless switching method for satellite synchronous clock device
  • Modularized multisource input seamless switching method for satellite synchronous clock device

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Experimental program
Comparison scheme
Effect test

Embodiment

[0014] The present invention provides a modularized multi-source input seamless switching method of a satellite synchronous clock device, the steps are:

[0015] Step 1. Configure at least two time receiving modules in a satellite clock device. At least two time receiving modules are connected through a handshake bus, a communication bus, and a second bus. The handshake bus includes the occupied line BL and the request line RL, such as figure 1 Shown

[0016] Step 2. Within a certain period of time after the satellite clock device is started, each time receiving module may receive a valid ephemeris and obtain a timing signal. The time receiving module with a valid time will take over the handshake bus first. At this time, if at least two When the time receiving module wants to take over the bus at the same time, it will be arbitrated by the hardware handshake bus. That is, the first valid time receiving module immediately takes over the occupied line BL of the handshake bus, and th...

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Abstract

The invention relates to a modularized multisource input seamless switching method for a satellite synchronous clock device, which is characterized by comprising the following steps of: firstly, configuring at least two time receiving modules in one satellite clock device, and connecting at least two time receiving modules through a handshake bus, a communication bus and a second bus; subsequently, confirming a main control module and a standby module through macro and micro competitions after the satellite clock device is started, and switching to the standby module through seamless switching when the main control module fails. The invention has the advantages of realizing the switching among multiple clock signals of the satellite clock device by using the seamless switching technology,and ensuring that the satellite clock device can realize multisource input.

Description

Technical field [0001] The invention relates to a modularized multi-source input seamless switching method of a satellite synchronous clock device. Background technique [0002] During the operation of the power system, the operation status of the power grid changes rapidly. The power grid dispatching implements hierarchical and multi-level management, and the dispatching management center is far away from the scene. In order to ensure the safe and economic operation of the power grid, various automation devices based on computer technology and communication technology are widely used, such as dispatch automation systems, fault recorders, microcomputer relay protection devices, event sequence recording devices, and substation computer monitoring systems , Electric energy billing system, thermal power plant unit automatic control system, lightning positioning system and control devices such as coal transportation, ash removal, and desulfurization. With the improvement of the auto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04G7/00
Inventor 李鸥孙岳材
Owner 上海申贝科技发展有限公司