KR20090089097A - Irig-b time syncronization device and method there of - Google Patents
Irig-b time syncronization device and method there of Download PDFInfo
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- KR20090089097A KR20090089097A KR1020080014461A KR20080014461A KR20090089097A KR 20090089097 A KR20090089097 A KR 20090089097A KR 1020080014461 A KR1020080014461 A KR 1020080014461A KR 20080014461 A KR20080014461 A KR 20080014461A KR 20090089097 A KR20090089097 A KR 20090089097A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G7/00—Synchronisation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electric Clocks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The present invention relates to a time synchronization device, and more particularly, to a time synchronization device using an IRIG-B time code and a time synchronization method thereof.
IRIG-B time code apparatus using an IRIG-B time code according to a preferred feature of the present invention IRIG-B interface unit for receiving the IRIG-B time signal from the GPS receiver that converts the time signal from the GPS satellite to the IRIG-B time signal And a time information analyzer configured to store an IRIG-B time code format and to analyze and extract time information for time synchronization from the received IRIG-B time signal, and to receive the extracted time information. Analog-to-digital conversion unit for converting to a synchronization signal for synchronization, and receives the synchronization signal to request a time synchronization to the system requiring time synchronization, and receives the time synchronization acceptance information by the requested information to the time of the system A time synchronization controller for controlling synchronization, and transmitting information requested from the time synchronization controller to the system; The lock information and a communication unit for transmitting the time synchronization control part.
Description
The present invention relates to a time synchronization device, and more particularly, to a time synchronization device using an IRIG-B time code and a time synchronization method thereof.
The wired and wireless communication devices we use today have their own watches. When transmitting a packet between these devices, time synchronization between the devices is needed to find out how long it takes to transmit the packet.
The time synchronization according to the prior art uses a network time protocol (NTP) server, an SNTP server or a satellite (GPS), or a method of storing time differences between devices. However, since NTP server or SNTP server is used to ask the server the current time and adjust the time information coming in response to it, it cannot be used without a server on the network. Since the time information coming from the satellite to the time of their own, there was a problem that is limited only in the environment with the satellite receiver.
There is also time synchronization using IEEE 1588 (Precision Time Protocol) based communication protocol, which transmits a sync message from a master node to a slave node, which has estimated time information. After that, the Follow_up message with the correct time information is transmitted to the slave node. The slave node calculates the offset and the correct clock. However, this method provides high time precision, but it is expensive to build and difficult to implement by a complex time synchronization algorithm.
On the other hand, in recent years, transmission and distribution systems or substation systems are adopting a communication technology based on IEC 61850, which is a standard system for automation, and this IEC 61850-based automation system requires time synchronization to accurately transmit information between power devices. . In addition, the substation automation system manages by dividing the function into a station level, a bay level, and a process level for each function. In particular, a higher time precision is required toward the process level. Therefore, time synchronization using the IRIG-B time synchronization communication protocol is required in a substation automation system.
According to the present invention devised to solve the above problems, by converting the time signal received from the GPS satellites using the IRIG-B time code, by extracting the time information from the converted code, by performing time synchronization between devices It is an object of the present invention to provide an apparatus and method for time synchronization using IRIG-B time code, which can be easily implemented in a system requiring construction time reduction and time synchronization.
The time synchronization device using the IRIG-B time code of the present invention for achieving the above object is an IRIG-B that receives an IRIG-B time signal from a GPS receiver that converts the time signal from a GPS satellite into an IRIG-B time signal. A B interface unit, an IRIG-B time code format, a time information analyzer for analyzing and extracting time information for time synchronization from the received IRIG-B time signal, and receiving the extracted time information; An analog-digital converter for converting a system into a synchronization signal for time synchronization of the system, receiving the synchronization signal, requesting time synchronization to a system requiring time synchronization, and receiving time synchronization acceptance information according to the requested information; A time synchronization control unit for controlling time synchronization of the system and information requested from the time synchronization control unit to the system; It provides a time synchronization system using the IRIG-B time code including a communication unit for transmitting the transmission information accepted and the time synchronization control part.
The system requiring time synchronization is preferably a transformation automation system based on the IEC 61850 communication protocol.
The signal analysis algorithm of the signal analysis unit is preferably coded by the Velilog-HDL programming language.
The time synchronization method using the IRIG-B time code of the present invention for achieving the above object, (A) the IRIG-B interface unit of the time synchronization device having an IRIG-B interface and connected to the system requiring time synchronization, Receiving an IRIG-B time signal from a GPS receiver which converts a time signal received from a GPS satellite into an IRIG-B time signal, and (B) analyzes the IRIG-B time code format from the received IRIG-B time signal. Extracting time information from a time information analyzer for performing the step of (C) converting the extracted time information into a synchronization signal in the form of a digital signal for time synchronization, and (D) receiving the converted synchronization signal. Requesting synchronization by a synchronization signal transmission to a system requiring time synchronization; and (E) the time synchronization device is configured to transmit the synchronization from the system. It provides a time synchronization method using an IRIG-B time code comprising the step of receiving time synchronization acceptance information by the acceptance of the vaporized signal.
The time synchronization device and method using the IRIG-B time code of the present invention as described above, by performing time synchronization by analyzing the time information from the IRIG-B time code, while providing a high time precision, while reducing the construction cost, Compared with IEEE 1588 based communication protocol, time synchronization can be performed quickly without additional signal generation.
Another advantage is that it is easy to implement by coding in the Velilog-HDL language on a microprocessor chip, and a system that requires time synchronization such as a substation automation system is applicable.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a block diagram of an IRIG-B
Referring to Figures 1 to 3 and 5 in detail,
IRIG-B
The IRIG-
At this time, the IRIG-
The
In this case, the IRIG-B time code format may be stored in advance, and time information may be extracted by analyzing the received IRIG-B time signal. The extracted time information may be UTC (Coordinated universial time or Coordinated Universal Time, It is preferable that the time information is 'UTC'.
A detailed time information analysis and extraction method is shown in FIGS. 2 and 3.
Where the IRIG time signal is a code consisting of one letter and three numbers, the letter indicates the format format, the three numbers indicate the IRIG signal attribute, and the IRIG-B time code indicates that one letter is 'B'. Code format defined by.
Table 1 shows standard code format names defined in IRIG standard 200-04.
The time
In this case, a method for determining a specific IRIG-B time signal will be described with reference to FIG. 2. First, an IRIG-B time signal received from the IRIG-
In addition, referring to FIG. 3, the IRIG-B time signal is counted as an internal clock for one cycle (10 ms) and determined as binary bit '0' at three counts, and determined as binary bit '1' at six counts. In the case of counting nine times, the position identifier bit is determined.
According to the determination method, bits including time information are distinguished from 100 IRIG-B time signals, and since each bit is in the form of a binary coded decimal (BCD) code, the time information is converted into a decimal form to extract time information.
Meanwhile, the analog-
The time synchronization controller receives the generated synchronization signal and transmits a time synchronization request signal to the
Upon receiving the time synchronization acceptance signal from the
In this case, the
As shown in FIG. 1, the
Meanwhile, programming of the time analysis algorithm of the
4 is a flowchart of an IRIG-B time synchronization method according to an embodiment of the present invention.
Referring to Figure 4 in detail,
First, when a
If time synchronization is required, the time signal is converted into an IRIG-B time signal form from the
The received IRIG-B time signal is transmitted to the
The extracted time information is transmitted to the analog-
The converted synchronization signal is received from the
The
Although one preferred embodiment of the present invention has been described above, it is clear that the present invention may use various changes, modifications, and equivalents, and may be applied in the same manner by appropriately modifying the embodiment. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.
1 is a block diagram of an IRIG-B time synchronization device according to an embodiment of the present invention.
2 is a conceptual diagram of a method of extracting time information in the IRIG-B time synchronization device of FIG.
3 is a conceptual diagram of a method for analyzing time information in the IRIG-B time synchronization device of FIG.
4 is a flowchart of an IRIG-B time synchronization method according to a preferred embodiment of the present invention.
5 is a diagram illustrating a simulation screen when coding a time information analysis algorithm of the IRIG-B time synchronization device of FIG. 1 in a VHDL language.
<Description of reference numerals for main parts of the drawings>
100: GPS receiver 200: time synchronization device
210: IRIG-B interface unit 220: time information analysis unit
221: IRIG-B function configuration module 222: time format configuration module
230: time synchronization control unit 240: communication unit
300: analog-digital conversion unit 400: a system requiring time synchronization
410: protection controller 420: bay level controller
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KR1020080014461A KR20090089097A (en) | 2008-02-18 | 2008-02-18 | Irig-b time syncronization device and method there of |
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KR1020080014461A KR20090089097A (en) | 2008-02-18 | 2008-02-18 | Irig-b time syncronization device and method there of |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101480642B1 (en) * | 2013-10-15 | 2015-01-09 | 엘에스산전 주식회사 | Event input module |
CN104678754A (en) * | 2015-03-25 | 2015-06-03 | 天津七六四通信导航技术有限公司 | Full-function type time synchronization system |
CN110224702A (en) * | 2019-05-24 | 2019-09-10 | 北斗天汇(北京)科技有限公司 | Timing code IRIG-B adaptive decoding device and coding/decoding method |
CN112881977A (en) * | 2021-01-13 | 2021-06-01 | 南京鼎臻智能电气有限公司 | High-precision self-calibration clock synchronization method based on Beidou or GPS |
-
2008
- 2008-02-18 KR KR1020080014461A patent/KR20090089097A/en not_active Application Discontinuation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101480642B1 (en) * | 2013-10-15 | 2015-01-09 | 엘에스산전 주식회사 | Event input module |
US9864358B2 (en) | 2013-10-15 | 2018-01-09 | Lsis Co., Ltd. | Event input module |
CN104678754A (en) * | 2015-03-25 | 2015-06-03 | 天津七六四通信导航技术有限公司 | Full-function type time synchronization system |
CN110224702A (en) * | 2019-05-24 | 2019-09-10 | 北斗天汇(北京)科技有限公司 | Timing code IRIG-B adaptive decoding device and coding/decoding method |
CN110224702B (en) * | 2019-05-24 | 2021-07-06 | 北斗天汇(北京)科技有限公司 | Time code IRIG-B self-adaptive decoding device and decoding method |
CN112881977A (en) * | 2021-01-13 | 2021-06-01 | 南京鼎臻智能电气有限公司 | High-precision self-calibration clock synchronization method based on Beidou or GPS |
CN112881977B (en) * | 2021-01-13 | 2024-05-17 | 南京鼎臻智能电气有限公司 | High-precision self-calibration clock synchronization method based on Beidou or GPS |
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