A timing device, method and system
A technology of network timing and system time, applied in time division multiplexing systems, transmission systems, electrical components, etc., can solve the problems of no unified time management, inability to obtain useful relevant information, and increased difficulty in fault analysis.
Active Publication Date: 2018-11-06
BEIJING SUNTECH INFORMATION TECH CO LTD +2
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Problems solved by technology
Due to the fact that there are many distribution network points, wide areas, and complex application environments, about 95% of the distribution network terminal equipment adopts the wireless public network communication method, so the problem of large time synchronization errors based on wireless communication in the distribution network is gradually emerging. The actual time of each terminal device varies greatly, and there is no unified time management among different terminal devices. Therefore, when a fault occurs, useful relevant information cannot be accurately obtained according to the time information, which greatly increases the difficulty of fault analysis, which is not conducive to operation and maintenance work
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[0070] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0071] figure 1 It is a schematic structural diagram of a network timing device provided by an embodiment of the present invention. Such as figure 1 As shown, the present implementation adopts the satellite and the NTP server as the time source for the network time service device of this embodiment to request the time service. The network timing device provided in this embodiment includes a processing module 101, an input and output interface 102, a detection module 103, an RTC circuit module 104, a temperature sensor 105, and a satellite timing and positioning module 106;
[0072] Wherein, the processing module 101 generates an NTP timing request for requesting timing from the NTP server based on the NTP protocol; the processing module 101 sends the generated NTP timing request to several NTP servers simultaneously ...
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The invention discloses a timing device, method and system. Through making a timing request to a plurality of network timing servers and carrying out computational analysis on time information, network delays with larger errors in all timing responses and timing time of the network timing servers are removed, and timing time with higher precision is obtained by adding a calculated mean value of network delays with the smaller errors and a calculated mean value of timing time with the smaller error; in addition, the network delay of the larger timing response is involved to prevent a sudden change or fault of a timing request or a timing response transmission path; through analyzing network delay data of each timing response in each timing request process in the past, the larger network delays caused by the sudden change or fault of the transmission path are removed, so that the precision of network timing is guaranteed and improved.
Description
technical field [0001] The present invention relates to the field of time service, in particular to a time service device, method and system. Background technique [0002] In recent years, with the acceleration of distribution network construction, wireless communication has been used more and more in distribution network, and has gradually become an important communication method for line coverage. Due to the fact that there are many distribution network points, wide areas, and complex application environments, about 95% of the distribution network terminal equipment adopts the wireless public network communication method, so the problem of large time synchronization errors based on wireless communication in the distribution network is gradually emerging. The actual time of each terminal device varies greatly, and there is no unified time management among different terminal devices. Therefore, when a fault occurs, useful relevant information cannot be accurately obtained ac...
Claims
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IPC IPC(8): H04J3/06H04L29/08
CPCH04J3/0667H04L67/10
Inventor 梁奎胡建军张宏周松峰
Owner BEIJING SUNTECH INFORMATION TECH CO LTD