CN111277462A - Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system - Google Patents
Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system Download PDFInfo
- Publication number
- CN111277462A CN111277462A CN202010062751.1A CN202010062751A CN111277462A CN 111277462 A CN111277462 A CN 111277462A CN 202010062751 A CN202010062751 A CN 202010062751A CN 111277462 A CN111277462 A CN 111277462A
- Authority
- CN
- China
- Prior art keywords
- irig
- time
- signal
- time service
- code signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The invention relates to the technical field of time synchronization, and discloses a method for automatically measuring IRIG-B time service signal propagation delay, a time service slave station and a time service system, namely, the time service slave station side firstly performs coarse synchronization of a slave station clock, then feeds back a standard IRIG-B time code signal to a time service master station based on a coarse synchronization result, and finally obtains the propagation delay of the IRIG-B time service signal based on an OR logic processing signal obtained by the master and slave station standard IRIG-B time code signal, so that the time service slave station can automatically measure and obtain the delay information for further accurate synchronization, meanwhile, the whole measurement process does not need manual participation, the artificial deviation can be avoided, the measurement precision is ensured, and the technical requirement level of equipment on using and maintaining personnel can be reduced.
Description
Technical Field
The invention belongs to the technical field of time synchronization, and particularly relates to a method for automatically measuring IRIG-B time service signal propagation delay, a time service slave station and a time service system.
Background
In an IRIG-B (DC) (B code for short) of the traditional time synchronization technology, which is a serial time code prepared by a Telecommunications Group to which the IRIG belongs, is used for time synchronization of each system, the frame length of the IRIG-B (B code) is 1s, the IRIG-B time code comprises 100 code elements in total, the IRIG-B time code is coded by adopting a pulse width modulation mode, the code elements have three widths, respectively represent '0', '1' and 'P', in addition, DC in brackets represents that IRIG-B time code signals adopt a direct current square wave signal mode, if high-precision time synchronization is needed, the propagation delay between a time service master station and a time service slave station needs to be manually calibrated, other test instrument equipment needs to be used in the calibration process, the measurement result can be different according to different test instrument equipment and operators, and the measurement result needs to be input to the time service slave station through a man-machine interaction interface after being calibrated, the whole process is complicated and complex, and has higher requirements on the skill level of operators.
Disclosure of Invention
In order to solve the problem that the propagation delay of the existing IRIG-B (DC) time service system needs manual measurement and input, the invention aims to provide a method for automatically measuring the propagation delay of an IRIG-B time service signal, a time service slave station and a time service system.
The technical scheme adopted by the invention is as follows:
a method for automatically measuring IRIG-B time service signal propagation delay comprises the following steps:
s101, receiving a first standard IRIG-B time code signal from a time service master station side, wherein the first standard IRIG-B time code signal is generated at the time service master station side according to time information of a master station clock;
s102, completing coarse synchronization of a slave station clock according to the first standard IRIG-B time code signal;
s103, generating a second standard IRIG-B time code signal according to the time information of the slave station clock;
s104, feeding back the second standard IRIG-B time code signal to a time service master station through a communication link, wherein the communication link is the same link for transmitting the first standard IRIG-B time code signal;
s105, receiving an IRIG-B-like time code signal which is from the time service master station side and is transmitted through the communication link, wherein the IRIG-B-like time code signal is an output signal which is obtained by carrying out OR logic processing on a fed-back second standard IRIG-B time code signal and a generated first standard IRIG-B time code signal at the time service master station side;
s106, measuring the code element width increment of the IRIG-B time code signal compared with the standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation delay of the IRIG-B time service signal.
Preferably, the following steps are further included after the step S106:
and S1071, synchronously correcting the slave station clock according to the obtained propagation delay.
Preferably, the following steps are further included after the step S106:
s1072, stopping the generation and feedback of the second standard IRIG-B time code signal.
Specifically, the communication link is a single cable.
The other technical scheme adopted by the invention is as follows:
a time service slave station comprises a signal receiving and transmitting unit, a coarse synchronization processing unit, a signal generating unit and a time delay measuring unit;
the signal transceiving unit is used for receiving a first standard IRIG-B time code signal and an IRIG-B-like time code signal from a time service master station side on one hand, and feeding back a second standard IRIG-B time code signal to the time service master station through a communication link on the other hand, wherein the first standard IRIG-B time code signal is generated on the time service master station side according to time information of a master station clock, the second standard IRIG-B time code signal is generated according to time information of a slave station clock after coarse synchronization of the slave station clock is completed according to the first standard IRIG-B time code signal, the IRIG-B-like time code signal is an output signal which is subjected to OR logic processing on the fed back second standard IRIG-B time code signal and the generated first standard IRIG-B time code signal on the time service master station side, and the communication link is used for transmitting the first standard IRIG-B time code signal and the IRIG-B-like time code signal The same link of the inter-code signal;
the coarse synchronization processing unit is in communication connection with the signal transceiving unit and is used for completing coarse synchronization of a slave station clock according to the first standard IRIG-B time code signal;
the signal generating unit is respectively in communication connection with the coarse synchronization processing unit and the signal transceiving unit, and is configured to generate the second standard IRIG-B time code signal according to the time information of the slave station clock after the coarse synchronization of the slave station clock is completed, and transmit the second standard IRIG-B time code signal to the signal transceiving unit;
the time delay measuring unit is in communication connection with the signal transceiving unit and is used for measuring the code element width increment of the obtained IRIG-B-like time code signal compared with a standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation time delay of the IRIG-B time service signal.
The system is optimized and further comprises a synchronous correction unit, wherein the synchronous correction unit is respectively in communication connection with the coarse synchronization processing unit and the delay measurement unit;
and the synchronous correction unit is used for synchronously correcting the slave station clock according to the obtained propagation delay.
Specifically, the communication link is a single cable.
The other technical scheme adopted by the invention is as follows:
a time service system comprises a time service master station and the time service slave station, wherein the time service master station comprises a signal generation module and an OR gate element;
the signal generation module is used for generating a first standard IRIG-B time code signal according to the time information of the master station clock and transmitting the first standard IRIG-B time code signal to a first input end of the OR gate element;
and the second input end and the output end of the OR gate element are respectively connected with the signal transceiving unit of the time service slave station through the same communication link in a communication mode.
Preferably, the signal generating module is further configured to stop generating and transmitting the first standard IRIG-B time code signal until entering a next time service process when the second input terminal of the or gate element is switched from the signal input state to the no-signal input state.
Preferably, when the time service slave stations comprise a plurality of time service master stations, the time service master station is respectively in communication connection with the signal transceiving units of the time service slave stations through different or gate elements and communication links, or the time service master station is respectively in communication connection with the signal transceiving units of the time service slave stations through different communication links.
The invention has the beneficial effects that:
(1) the invention provides a novel method, a novel time service slave station and a novel time service system for automatically measuring IRIG-B time service signal propagation delay based on OR logic processing signals, namely, the coarse synchronization of a slave station clock is firstly carried out on the side of the time service slave station, then a standard IRIG-B time code signal is fed back to the time service master station based on the coarse synchronization result, and finally the propagation delay of the IRIG-B time service signal is obtained based on the OR logic processing signal obtained by the standard IRIG-B time code signal of the master station and the slave station, so that the time service slave station can automatically measure and obtain the delay information for further accurate synchronization, meanwhile, the whole measurement process does not need manual participation, the artificial deviation can be avoided, the measurement precision is ensured, and the technical requirement level of equipment for using and maintaining personnel can be reduced;
(2) the measurement work is only carried out on the time service slave station, the accurate synchronization can be automatically realized based on the obtained propagation delay, the time service master station is not required to participate in the measurement work, the workload of the time service master station and the overhead requirement on computing resources can be reduced, and the cost of the time service master station is approximately unchanged (the cost of an increasing OR gate element is very low);
(3) the method does not need to design a special code pattern for measuring propagation delay, and only needs to use the existing IRIG-B (DC) time code, so that for the time service slave station, only software upgrading is needed, the compatibility is good, and the practical application and popularization are facilitated;
(4) the time service application purposes of the single master station and the multiple slave stations can be realized, including the parallel time service purpose of the multiple time service slave stations and the polling time service purpose of the multiple time service slave stations, so that the practical popularization and application are more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for automatically measuring IRIG-B time service signal propagation delay provided by the present invention.
Fig. 2 is a schematic diagram of the automatic measurement of IRIG-B time service signal propagation delay provided by the present invention.
FIG. 3 is a schematic diagram of the OR logic processing of the second IRIG-B time code signal and the first IRIG-B time code signal according to the present invention.
Fig. 4 is a schematic structural diagram of a time service slave station provided by the present invention.
FIG. 5 is a schematic structural diagram of a time service system provided by the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
It will be understood that when an element is referred to herein as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Conversely, if a unit is referred to herein as being "directly connected" or "directly coupled" to another unit, it is intended that no intervening units are present. In addition, other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example one
As shown in fig. 1 to 3, the method for automatically measuring the IRIG-B time service signal propagation delay according to the present embodiment may include, but is not limited to, the following steps S101 to S106.
S101, receiving a first standard IRIG-B time code signal from a time service master station side, wherein the first standard IRIG-B time code signal is generated at the time service master station side according to time information of a master station clock.
In step S101, the first standard IRIG-B time code signal is a standard IRIG-B (dc) serial time code signal, and the generation method is the conventional method.
And S102, completing coarse synchronization of the slave station clock according to the first standard IRIG-B time code signal.
In step S102, the coarse synchronization is performed by using an existing conventional time synchronization method, which may be, but is not limited to, the following steps: and decoding and acquiring time information from the first standard IRIG-B time code signal, and then adjusting the polarity and the phase of the slave station clock according to the time information until the coarse synchronization of the slave station clock is completed.
And S103, generating a second standard IRIG-B time code signal according to the time information of the slave station clock.
In the step S103, the second standard IRIG-B time code signal is also a standard IRIG-B (dc) serial time code signal, and the generation manner thereof is also the conventional manner.
And S104, feeding back the second standard IRIG-B time code signal to a time service master station through a communication link, wherein the communication link is the same link for transmitting the first standard IRIG-B time code signal.
In step S104, the communication link is used to enable signals to be transmitted between the time service master station and the time service slave station, and may be, but is not limited to, a wired transmission medium or a wireless transmission medium, where the wired transmission medium is, for example, a long-distance single cable.
And S105, receiving an IRIG-B-like time code signal which is from the time service master station side and is transmitted through the communication link, wherein the IRIG-B-like time code signal is an output signal which is obtained by carrying out OR logic processing on the fed back second standard IRIG-B time code signal and the generated first standard IRIG-B time code signal at the time service master station side.
In step S105, in order to perform an or logic process, specifically, as shown in fig. 2, but not limited to, a signal generation module and an or gate element may be provided at the time master station, where the signal generation module is configured to generate a first standard IRIG-B time code signal according to time information of a master station clock, and transmit the first standard IRIG-B time code signal to a first input end of the or gate element; and the second input end and the output end of the OR gate element are respectively connected with the signal transceiving unit of the time service slave station through the same communication link in a communication mode. Therefore, the fed-back second standard IRIG-B time code signal and the generated first standard IRIG-B time code signal (which needs to be continuously generated and transmitted by the signal generation module) can be subjected to or logic processing by the or gate element, so as to obtain an IRIG-B-like time code signal with a wider symbol width, as shown in fig. 3.
S106, measuring the code element width increment of the IRIG-B time code signal compared with the standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation delay of the IRIG-B time service signal.
In the step S106, a specific manner of measuring the symbol width increment is an existing conventional comparison manner, and since the symbol width increment includes the propagation delay of the first standard IRIG-B time code signal and the propagation delay of the second standard IRIG-B time code signal through an or logic process, and two IRIG-B time code signals are transmitted on the same link, the propagation delay of the IRIG-B time signal caused by the transmission distance is only half of the symbol width increment.
Therefore, through the steps S105 to S106, the coarse synchronization of the slave station clock can be firstly carried out on the time service slave station side, then the standard IRIG-B time code signal is fed back to the time service master station based on the coarse synchronization result, and finally the propagation delay of the IRIG-B time service signal is obtained based on the OR logic processing signal obtained by the master-slave station standard IRIG-B time code signal, so that the time service slave station can automatically measure and obtain the delay information for further accurate synchronization, meanwhile, the whole measurement process does not need manual participation, the artificial deviation can be avoided, the measurement precision is ensured, and the technical requirement level of equipment for using and maintaining personnel can be reduced. It should be noted that although the aforementioned method for automatically measuring the IRIG-B time service signal propagation delay is only effective within a certain transmission distance range (i.e. the symbol width increment cannot exceed the symbol width, for example, the symbol width increment cannot exceed 10ms when the symbol width is 10ms, and the transmission distance cannot exceed 150KM if the signal is transmitted at the speed of light), the high-precision time synchronization requirement of most scenarios can be satisfied because the transmission distance is in the order of tens of kilometers.
Preferably, in order to perform high-precision time synchronization by using propagation delay, the following steps are further included after the step S106: and S1071, synchronously correcting the slave station clock according to the obtained propagation delay. The synchronization correction mode can specifically adopt a conventional compensation correction mode to synchronize the slave station clock, so as to achieve the purpose of high-precision time synchronization.
Preferably, the following steps are further included after the step S106: s1072, stopping the generation and feedback of the second standard IRIG-B time code signal. Because the propagation delay for high-precision time synchronization is obtained, the second standard IRIG-B time code signal does not need to be fed back, the time service process can be ended in time through the steps, and the energy expenditure of the time service slave station is reduced. After the step S1072, similarly, in order to enable the time master station to end the current time process in time, when it is found that the state is switched from the signal feedback state to the no-signal feedback state, the generation and transmission of the first standard IRIG-B time code signal may be stopped until the next time process is started.
In summary, the method for automatically measuring the IRIG-B time service signal propagation delay provided by the embodiment has the following technical effects:
(1) the embodiment provides a new method for automatically measuring IRIG-B time service signal propagation delay based on an OR logic processing signal, namely, the coarse synchronization of a slave station clock is firstly carried out at the side of a time service slave station, then a standard IRIG-B time code signal is fed back to the time service master station based on the coarse synchronization result, and finally the propagation delay of the IRIG-B time service signal is obtained based on the OR logic processing signal obtained by the master and slave station standard IRIG-B time code signal, so that the time service slave station can automatically measure and obtain the delay information for further accurate synchronization, meanwhile, the whole measurement process does not need manual participation, the artificial deviation can be avoided, the measurement precision is ensured, and the technical requirement level of equipment on using and maintaining personnel can be reduced;
(2) the measurement work is only carried out on the time service slave station, the accurate synchronization can be automatically realized based on the obtained propagation delay, the time service master station is not required to participate in the measurement work, the workload of the time service master station and the overhead requirement on computing resources can be reduced, and the cost of the time service master station is approximately unchanged (the cost of an increasing OR gate element is very low);
(3) the method does not need to design a special code pattern for measuring propagation delay, and only needs to carry out software upgrading for the time service slave station by using the existing IRIG-B (DC) time code, so that the compatibility is good, and the method is convenient for practical application and popularization.
Example two
As shown in fig. 4, on the basis of the first embodiment, the present embodiment provides a time service slave station for implementing the method in the first embodiment, which includes a signal transceiving unit, a coarse synchronization processing unit, a signal generating unit, and a delay measuring unit; the signal transceiving unit is used for receiving a first standard IRIG-B time code signal and an IRIG-B-like time code signal from a time service master station side on one hand, and feeding back a second standard IRIG-B time code signal to the time service master station through a communication link on the other hand, wherein the first standard IRIG-B time code signal is generated on the time service master station side according to time information of a master station clock, the second standard IRIG-B time code signal is generated according to time information of a slave station clock after coarse synchronization of the slave station clock is completed according to the first standard IRIG-B time code signal, the IRIG-B-like time code signal is an output signal which is subjected to OR logic processing on the fed back second standard IRIG-B time code signal and the generated first standard IRIG-B time code signal on the time service master station side, and the communication link is used for transmitting the first standard IRIG-B time code signal and the IRIG-B-like time code signal The same link of the inter-code signal; the coarse synchronization processing unit is in communication connection with the signal transceiving unit and is used for completing coarse synchronization of a slave station clock according to the first standard IRIG-B time code signal; the signal generating unit is respectively in communication connection with the coarse synchronization processing unit and the signal transceiving unit, and is configured to generate the second standard IRIG-B time code signal according to the time information of the slave station clock after the coarse synchronization of the slave station clock is completed, and transmit the second standard IRIG-B time code signal to the signal transceiving unit; the time delay measuring unit is in communication connection with the signal transceiving unit and is used for measuring the code element width increment of the obtained IRIG-B-like time code signal compared with a standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation time delay of the IRIG-B time service signal. Further, the communication link may be exemplified by a single cable for a long distance.
The system is optimized and further comprises a synchronous correction unit, wherein the synchronous correction unit is respectively in communication connection with the coarse synchronization processing unit and the delay measurement unit; and the synchronous correction unit is used for synchronously correcting the slave station clock according to the obtained propagation delay.
As shown in fig. 4, the specific technical details and the general technical effects of the time service slave station in this embodiment can be obtained by direct derivation with reference to the embodiment, and are not described herein again.
EXAMPLE III
As shown in fig. 5, this embodiment further provides a time service system based on the technology of the second embodiment, including a time service master station and the time service slave station according to the second embodiment, where the time service master station includes a signal generation module and an or element; the signal generation module is used for generating a first standard IRIG-B time code signal according to the time information of the master station clock and transmitting the first standard IRIG-B time code signal to a first input end of the OR gate element; and the second input end and the output end of the OR gate element are respectively connected with the signal transceiving unit of the time service slave station through the same communication link in a communication mode.
Preferably, the signal generating module is further configured to stop generating and transmitting the first standard IRIG-B time code signal until entering a next time service process when the second input terminal of the or gate element is switched from the signal input state to the no-signal input state.
As shown in fig. 5, specific technical details and general technical effects of the time service system in the embodiment can be obtained by direct derivation with reference to the embodiment, which is not described herein again. When the time service slave station includes a plurality of time service slave stations, the time service master station is respectively connected with the signal transceiver units of the time service slave stations through different or gate elements and communication links in a communication manner, or the time service master station is respectively connected with the signal transceiver units of the time service slave stations through different communication links in a communication manner. Through the two connection structures, the time service application purpose of a single master station and a plurality of slave stations can be realized, wherein the parallel time service purpose of the slave stations can be realized through the former, and the polling time service purpose of the slave stations can be realized through the latter, so that the practical popularization and application are more convenient.
The various embodiments described above are merely illustrative, and may or may not be physically separate, as they relate to elements illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (10)
1. A method for automatically measuring IRIG-B time service signal propagation delay is characterized by comprising the following steps:
s101, receiving a first standard IRIG-B time code signal from a time service master station side, wherein the first standard IRIG-B time code signal is generated at the time service master station side according to time information of a master station clock;
s102, completing coarse synchronization of a slave station clock according to the first standard IRIG-B time code signal;
s103, generating a second standard IRIG-B time code signal according to the time information of the slave station clock;
s104, feeding back the second standard IRIG-B time code signal to a time service master station through a communication link, wherein the communication link is the same link for transmitting the first standard IRIG-B time code signal;
s105, receiving an IRIG-B-like time code signal which is from the time service master station side and is transmitted through the communication link, wherein the IRIG-B-like time code signal is an output signal which is obtained by carrying out OR logic processing on a fed-back second standard IRIG-B time code signal and a generated first standard IRIG-B time code signal at the time service master station side;
s106, measuring the code element width increment of the IRIG-B time code signal compared with the standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation delay of the IRIG-B time service signal.
2. A method of automatically measuring IRIG-B time service signal propagation delay as claimed in claim 1, wherein: the following steps are also included after the step S106:
and S1071, synchronously correcting the slave station clock according to the obtained propagation delay.
3. A method of automatically measuring IRIG-B time service signal propagation delay as claimed in claim 1, wherein: the following steps are also included after the step S106:
s1072, stopping the generation and feedback of the second standard IRIG-B time code signal.
4. A method of automatically measuring IRIG-B time service signal propagation delay as claimed in claim 1, wherein: the communication link is a single cable.
5. A time-service slave station, comprising: the device comprises a signal transceiving unit, a coarse synchronization processing unit, a signal generating unit and a delay measuring unit;
the signal transceiving unit is used for receiving a first standard IRIG-B time code signal and an IRIG-B-like time code signal from a time service master station side on one hand, and feeding back a second standard IRIG-B time code signal to the time service master station through a communication link on the other hand, wherein the first standard IRIG-B time code signal is generated on the time service master station side according to time information of a master station clock, the second standard IRIG-B time code signal is generated according to time information of a slave station clock after coarse synchronization of the slave station clock is completed according to the first standard IRIG-B time code signal, the IRIG-B-like time code signal is an output signal which is subjected to OR logic processing on the fed back second standard IRIG-B time code signal and the generated first standard IRIG-B time code signal on the time service master station side, and the communication link is used for transmitting the first standard IRIG-B time code signal and the IRIG-B-like time code signal The same link of the inter-code signal;
the coarse synchronization processing unit is in communication connection with the signal transceiving unit and is used for completing coarse synchronization of a slave station clock according to the first standard IRIG-B time code signal;
the signal generating unit is respectively in communication connection with the coarse synchronization processing unit and the signal transceiving unit, and is configured to generate the second standard IRIG-B time code signal according to the time information of the slave station clock after the coarse synchronization of the slave station clock is completed, and transmit the second standard IRIG-B time code signal to the signal transceiving unit;
the time delay measuring unit is in communication connection with the signal transceiving unit and is used for measuring the code element width increment of the obtained IRIG-B-like time code signal compared with a standard IRIG-B time code signal, and then taking half of the code element width increment as the propagation time delay of the IRIG-B time service signal.
6. A secondary station as claimed in claim 5, characterised in that: the system also comprises a synchronous correction unit, wherein the synchronous correction unit is respectively in communication connection with the coarse synchronization processing unit and the delay measurement unit;
and the synchronous correction unit is used for synchronously correcting the slave station clock according to the obtained propagation delay.
7. A secondary station as claimed in claim 5, characterised in that: the communication link is a single cable.
8. A time service system is characterized in that: the time service slave station comprises a time service master station and the time service slave station as claimed in any one of claims 5 to 7, wherein the time service master station comprises a signal generation module and an OR gate element;
the signal generation module is used for generating a first standard IRIG-B time code signal according to the time information of the master station clock and transmitting the first standard IRIG-B time code signal to a first input end of the OR gate element;
and the second input end and the output end of the OR gate element are respectively connected with the signal transceiving unit of the time service slave station through the same communication link in a communication mode.
9. The time service system of claim 8, wherein: and the signal generation module is further used for stopping the generation and transmission of the first standard IRIG-B time code signal until entering the next time service process when the second input end of the OR gate element is switched from the signal input state to the no-signal input state.
10. The time service system of claim 8, wherein: when the time service slave stations comprise a plurality of time service master stations, the time service master station is respectively in communication connection with the signal transceiving units of the time service slave stations through different OR gate elements and communication links, or the time service master station is respectively in communication connection with the signal transceiving units of the time service slave stations through different communication links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062751.1A CN111277462B (en) | 2020-01-19 | 2020-01-19 | Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010062751.1A CN111277462B (en) | 2020-01-19 | 2020-01-19 | Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111277462A true CN111277462A (en) | 2020-06-12 |
| CN111277462B CN111277462B (en) | 2022-06-17 |
Family
ID=71000928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010062751.1A Active CN111277462B (en) | 2020-01-19 | 2020-01-19 | Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111277462B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111984059A (en) * | 2020-07-31 | 2020-11-24 | 许继集团有限公司 | PPS (polyphenylene sulfide) jump detection method and system for timing by time service module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727065A (en) * | 2008-10-24 | 2010-06-09 | 郑州威科姆科技股份有限公司 | High-precision time service method of lock losing clock with two-way IRIG-B code |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| US20150105868A1 (en) * | 2013-10-15 | 2015-04-16 | Lsis Co., Ltd. | Event input module |
| CN109151962A (en) * | 2018-07-25 | 2019-01-04 | 北京升哲科技有限公司 | A kind of terminal, base station, communication system and communication means |
-
2020
- 2020-01-19 CN CN202010062751.1A patent/CN111277462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727065A (en) * | 2008-10-24 | 2010-06-09 | 郑州威科姆科技股份有限公司 | High-precision time service method of lock losing clock with two-way IRIG-B code |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| US20150105868A1 (en) * | 2013-10-15 | 2015-04-16 | Lsis Co., Ltd. | Event input module |
| CN109151962A (en) * | 2018-07-25 | 2019-01-04 | 北京升哲科技有限公司 | A kind of terminal, base station, communication system and communication means |
Non-Patent Citations (1)
| Title |
|---|
| 吕守国，陈培峰，姜建平主编: "《变电运行与变电维修》", 30 June 2019, 延边大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111984059A (en) * | 2020-07-31 | 2020-11-24 | 许继集团有限公司 | PPS (polyphenylene sulfide) jump detection method and system for timing by time service module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111277462B (en) | 2022-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3540982B1 (en) | Delay management for distributed communications networks | |
| CN103616591A (en) | Simulation device and method of characters of merging unit of intelligent transformer substation | |
| CN105634641B (en) | Based on architecture for exchanging can cascade network communication accurate timing system and method | |
| CN103188066A (en) | Reference clock signal processing method and device | |
| CN201425704Y (en) | Satellite synchronous main clock device | |
| CN101881938A (en) | Satellite synchronous master clock device | |
| CN111277462B (en) | Method for automatically measuring IRIG-B time service signal propagation delay, time service slave station and time service system | |
| CN106455038A (en) | Master node, slave node and synchronization information self-correcting method | |
| CN109640389A (en) | A kind of method and apparatus of delay compensation | |
| CN102255791A (en) | Inter-equipment link delay determination method and system | |
| CN108234056A (en) | Using the single fiber bi-directional time delivering method and system of co-wavelength half-duplex mode | |
| CN108601080B (en) | Time synchronization signal transmission method and device based on wireless communication | |
| CN108306485B (en) | A kind of generation method of tandem type high voltage transducer power unit pwm signal | |
| CN106711963A (en) | Differential protection system and differential protection method for multi-segment line | |
| CN116506058A (en) | Time service system, method and application based on all-optical network and Kalman filtering correction | |
| CN103178920A (en) | Multi-channel synchronization method in test system of digital transformer substation | |
| KR101784408B1 (en) | Time synchronized system | |
| CN214751363U (en) | Carrier synchronization clock submodule based on digital phase locking unit and system thereof | |
| CN201812155U (en) | Satellite synchronous slave clock device | |
| CN105208647B (en) | Wireless transmission delay control system based on FPGA and control method | |
| CN101232344B (en) | Method and apparatus for frame alignment | |
| CN103825695B (en) | Compensation method for synchronous time delay of network based on POWERLINK | |
| CN109471356A (en) | Processing method, device, equipment, medium and the system of time signal | |
| CN112994824A (en) | Time synchronization method, device and system for IRIG-B code non-delay transmission | |
| CN115379491A (en) | Time service compensation method, wireless time service terminal, electronic device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |