CN110519001B - Clock synchronization method and device and ammeter communication module - Google Patents
Clock synchronization method and device and ammeter communication module Download PDFInfo
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- CN110519001B CN110519001B CN201910851750.2A CN201910851750A CN110519001B CN 110519001 B CN110519001 B CN 110519001B CN 201910851750 A CN201910851750 A CN 201910851750A CN 110519001 B CN110519001 B CN 110519001B
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- 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
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
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Abstract
The embodiment of the invention provides a clock synchronization method, a clock synchronization device and an ammeter communication module, wherein the clock synchronization method comprises the following steps: acquiring base meter time and current time of an ammeter communication module, judging whether the current time of the ammeter communication module meets a time synchronization condition, and synchronizing the current time of the ammeter communication module by taking the base meter time as a reference when the current time of the ammeter communication module meets the time synchronization condition; therefore, the time accuracy is ensured, the cost increase caused by using a hard clock chip and the device complexity of the ammeter communication module are avoided, and the redundancy of the device is avoided.
Description
Technical Field
The invention relates to the field of household electric meter clocks, in particular to a clock synchronization method and device and an electric meter communication module.
Background
The ammeter communication module is installed on the domestic ammeter of user for the relevant data of the electric quantity of reading the user reports to main website, and an ammeter communication module corresponds a domestic ammeter, and the concentrator can read several hundreds of domestic ammeters simultaneously, therefore, when having installed ammeter communication module, just need not solitary concentrator terminal.
At present, in the traditional industry, a hard clock chip, a debugging serial port, a USB serial port and the like are integrated on an ammeter communication module, from the perspective of a client, whether the clock chip is used or not is not concerned at all, and the time is ensured to be accurate, so that the cost and the device complexity of the ammeter communication module are increased invisibly by using the hard clock chip, and the redundancy of devices is caused.
Based on the above problems, a clock synchronization method that can ensure accurate time and avoid using excessive hardware is needed.
Disclosure of Invention
In view of the above, the present invention provides a clock synchronization method and apparatus, and an electricity meter communication module.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a clock synchronization method, which is applied to an electric meter communication module, and the method includes:
acquiring the base meter time and the current time of an ammeter communication module; the base meter time represents the time of the household electric meter corresponding to the electric meter communication module;
judging whether the current time of the ammeter communication module meets a time synchronization triggering condition;
and if so, synchronizing the current time of the ammeter communication module by taking the base meter time as a reference.
In an optional implementation manner, the step of determining whether the current time of the electricity meter communication module meets a time synchronization trigger condition includes:
acquiring the time of an ammeter communication module when the time is synchronized last time;
and when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is larger than or equal to a first threshold value, and the difference value between the base meter time and the current time of the ammeter communication module is larger than or equal to a second threshold value, determining that the current time of the ammeter communication module meets a time synchronization triggering condition.
In an optional implementation manner, the step of determining whether the current time of the electricity meter communication module meets a time synchronization trigger condition further includes:
and when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is smaller than a first threshold value, not performing time synchronization, and timing according to the software running time of a single chip microcomputer of the ammeter communication module.
In an optional implementation manner, the step of determining whether the current time of the electricity meter communication module meets a time synchronization trigger condition further includes:
and when the difference value between the base meter time and the current time of the electric meter communication module is smaller than a second threshold value, not performing time synchronization.
In a second aspect, an embodiment of the present invention provides a clock synchronization apparatus, which is applied to an electric meter communication module, and the apparatus includes:
the acquisition module is used for acquiring the base meter time and the current time of the ammeter communication module; the base meter time represents the time of the household electric meter corresponding to the electric meter communication module;
the judging module is used for judging whether the current time of the ammeter communication module meets a time synchronization triggering condition or not; and if so, synchronizing the current time of the ammeter communication module by taking the base meter time as a reference.
In an alternative embodiment, the apparatus further comprises: a processing module;
the acquisition module is also used for acquiring the time of the ammeter communication module during the last time of time synchronization;
and the processing module is used for determining that the current time of the ammeter communication module meets the time synchronization triggering condition when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is larger than or equal to a first threshold value and the difference value between the base meter time and the current time of the ammeter communication module is larger than or equal to a second threshold value.
In an optional implementation manner, the processing module is further configured to, when a difference between the current time of the electric meter communication module and the time of the electric meter communication module at the last time of time synchronization is smaller than a first threshold, not perform time synchronization, and perform timing according to software running time of a single chip of the electric meter communication module.
In an optional embodiment, the processing module is further configured to not perform time synchronization when a difference between the base meter time and the current time of the meter communication module is smaller than a second threshold.
In a third aspect, an embodiment of the present invention provides an electricity meter communication module, which includes a processor and a memory, where the memory stores machine executable instructions that can be executed by the processor, and the processor can execute the machine executable instructions to implement the clock synchronization method described in any one of the foregoing embodiments.
The clock synchronization method, the clock synchronization device and the ammeter communication module provided by the embodiment of the invention are used for acquiring the base meter time and the current time of the ammeter communication module, and synchronizing the current time of the ammeter communication module by taking the base meter time as a reference when the current time of the ammeter communication module meets the time synchronization triggering condition. Therefore, the time accuracy is ensured, the cost increase caused by using a hard clock chip and the device complexity of the ammeter communication module are avoided, and the redundancy of the device is avoided.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic flowchart of a clock synchronization method according to an embodiment of the present invention.
Fig. 2 is a schematic flowchart illustrating another clock synchronization method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a connection relationship of a clock synchronization apparatus according to an embodiment of the present invention.
Fig. 4 is a block schematic diagram illustrating an electricity meter communication module according to an embodiment of the present invention.
Icon: 100-a clock synchronization device; 110-an obtaining module; 120-a judgment module; 130-a processing module; 200-an electricity meter communication module; 210-a memory; 220-a processor; 230-a communication module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Fig. 1 is a flowchart illustrating a clock synchronization method according to an embodiment of the present invention.
And 102, judging whether the current time of the ammeter communication module meets a time synchronization condition.
And 103, synchronizing the current time of the ammeter communication module by taking the base ammeter time as a reference.
In this embodiment, the base meter time and the current time of the electric meter communication module are obtained, whether the current time of the electric meter communication module meets the time synchronization condition or not is judged, and when the current time of the electric meter communication module meets the time synchronization condition, the current time of the electric meter communication module is synchronized by taking the base meter time as a reference; the accuracy of time is guaranteed, meanwhile, the cost increase caused by the use of a hard clock chip and the complexity of devices of the ammeter communication module are avoided, and the redundancy of the devices is avoided.
On the basis of fig. 1, a possible implementation manner of the complete scheme is given below, and specifically, referring to fig. 2, a schematic flow diagram of another clock synchronization method provided in this embodiment is shown.
The electric meter communication module is arranged on a household electric meter of a user and used for reading the electric quantity related data of the user and reporting the electric quantity related data to the master station, one electric meter communication module corresponds to one household electric meter, and the base meter time represents the time of the household electric meter corresponding to the electric meter communication module.
In one embodiment, the electricity meter communication module is an open ec20 module device.
The current time of the electric meter communication module, namely the software running time in the single chip microcomputer of the electric meter communication module.
And time synchronization, namely synchronizing the current time of the electric meter communication module by taking the base meter time as a reference.
The ammeter communication module automatically records the time of the ammeter communication module each time when the time is synchronous.
If yes, go to step 204; if not, go to step 206.
In an embodiment, the first threshold is 30min, and specifically, other values are also possible, which are not limited herein.
And 204, judging that the difference value between the base meter time and the current time of the electric meter communication module is greater than or equal to a second threshold value.
If yes, go to step 205; if not, go to step 206.
In one embodiment, the second threshold is 3 s.
And if the difference value between the base meter time and the current time of the ammeter communication module is less than 3s, the base meter time and the current time of the ammeter communication module are considered to be consistent, and time synchronization is not needed.
And step 205, synchronizing the current time of the electric meter communication module by taking the base meter time as a reference.
And when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is larger than or equal to a first threshold value, and the difference value between the base meter time and the current time of the ammeter communication module is larger than or equal to a second threshold value, determining that the current time of the ammeter communication module meets the time synchronization triggering condition.
And after determining that the current time of the ammeter communication module meets the time synchronization triggering condition, synchronizing the current time of the ammeter communication module by taking the base meter time as a reference.
And step 206, not carrying out time synchronization, and timing according to the software running time of the single chip microcomputer of the ammeter communication module.
And when the current time of the ammeter communication module is determined not to meet the time synchronization triggering condition, time synchronization is not carried out, timing is carried out according to the software running time of the single chip microcomputer of the ammeter communication module, and step 203 and step 204 are executed again until 30min later to judge whether the current time of the ammeter communication module meets the time synchronization triggering condition.
It should be noted that, in the execution process of any step, if the thread of the electric meter communication module is abnormal or the power is down, the operation of the electric meter communication module is finished.
It should be noted that, this embodiment also supports the master station or the server to perform timing on the electric meter communication module, specifically, the master station is taken as an example for description.
The master station initiates a time synchronization request instruction to the ammeter communication module, acquires the current time of the ammeter communication module, and compares the current time of the ammeter communication module with the master station time; if the difference value between the current time of the ammeter communication module and the master station time is less than 5min, triggering a time setting instruction by the ammeter communication module, sending the master station time to the ammeter communication module by the master station, and synchronizing the current time of the ammeter communication module by taking the master station time as a reference; if the difference value between the current time of the ammeter communication module and the time of the master station is greater than or equal to 5min, the ammeter communication module generates an ammeter clock out-of-tolerance event and reports the ammeter clock out-of-tolerance event to the master station, and the master station conducts reason troubleshooting on the ammeter clock out-of-tolerance event and troubleshooting reasons causing time errors.
It should be noted that, an out-of-tolerance event of the meter clock means that the master station fails to perform time synchronization.
Similarly, the principle of the server for timing the communication module of the electric meter is the same, and this example is not described in detail.
In summary, the clock synchronization method, the clock synchronization device and the electric meter communication module provided in the embodiments of the present invention obtain the base meter time and the current time of the electric meter communication module, determine whether the current time of the electric meter communication module meets the time synchronization condition, and synchronize the current time of the electric meter communication module with the base meter time as a reference when the current time of the electric meter communication module meets the time synchronization condition; therefore, the time accuracy is ensured, the cost increase caused by using a hard clock chip and the device complexity of the ammeter communication module are avoided, and the redundancy of the device is avoided.
In order to perform the corresponding steps in the above embodiments and various possible manners, an implementation manner of the clock synchronization apparatus is given below. Further, please refer to fig. 3, which is a schematic connection diagram of a clock synchronization apparatus according to an embodiment of the present invention. It should be noted that the clock synchronization apparatus provided in the present embodiment has the same basic principle and technical effect as those of the above embodiments, and for the sake of brief description, no part of the present embodiment is mentioned, and reference may be made to the corresponding contents in the above embodiments. The clock synchronization apparatus 100 includes: comprises an acquisition module 110, a judgment module 120 and a processing module 130.
It is understood that in one embodiment, step 201 and step 202 are performed by the obtaining module 110.
It is understood that, in one embodiment, step 203 and step 204 are performed by the determining module 120.
It is understood that in one embodiment, step 205 and step 206 are performed by the processing module 130.
Fig. 4 is a block diagram of an electric meter communication module according to an embodiment of the present invention.
The electricity meter communication module 200 includes a memory 210, a processor 220, and a communication module 230. The memory 210, the processor 220, and the communication module 230 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines.
Wherein the memory is used for storing programs or data. The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The processor is used to read/write data or programs stored in the memory and perform corresponding functions.
The communication module is used for establishing communication connection between the electric meter communication module and other communication terminals through the network and receiving and transmitting data through the network.
It should be understood that the configuration shown in fig. 4 is merely a schematic diagram of a meter communication module, which may also include more or fewer components than shown in fig. 4, or have a different configuration than shown in fig. 4. The components shown in fig. 4 may be implemented in hardware, software, or a combination thereof.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A clock synchronization method is applied to an ammeter communication module and is characterized by comprising the following steps:
acquiring the base meter time and the current time of an ammeter communication module; the base meter time represents the time of the household electric meter corresponding to the electric meter communication module;
judging whether the current time of the ammeter communication module meets a time synchronization triggering condition;
if yes, synchronizing the current time of the ammeter communication module by taking the base meter time as a reference;
the step of judging whether the current time of the ammeter communication module meets the time synchronization triggering condition comprises the following steps:
acquiring the time of an ammeter communication module when the time is synchronized last time;
when the difference value between the current time of the ammeter communication module and the ammeter communication module time in the last time of time synchronization is larger than or equal to a first threshold value, and the difference value between the base meter time and the ammeter communication module current time is larger than or equal to a second threshold value, determining that the current time of the ammeter communication module meets a time synchronization triggering condition;
the method further comprises the following steps:
when a master station initiates a time setting request instruction to the ammeter communication module, acquiring the current time of the ammeter communication module, and comparing the current time of the ammeter communication module with the master station time; if the difference value between the current time of the ammeter communication module and the time of the master station is less than 5min, triggering a time setting instruction by the ammeter communication module, sending the time of the master station to the ammeter communication module by the master station, and synchronizing the current time of the ammeter communication module by taking the time of the master station as a reference; and if the difference value between the current time of the ammeter communication module and the time of the master station is greater than or equal to 5min, the ammeter communication module generates an ammeter clock out-of-tolerance event and reports the ammeter clock out-of-tolerance event to the master station.
2. The method of claim 1, wherein the step of determining whether the current time of the meter communication module satisfies a time synchronization trigger condition further comprises:
and when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is smaller than a first threshold value, not performing time synchronization, and timing according to the software running time of a single chip microcomputer of the ammeter communication module.
3. The method of claim 2, wherein the step of determining whether the current time of the meter communication module satisfies a time synchronization trigger condition further comprises:
and when the difference value between the base meter time and the current time of the electric meter communication module is smaller than a second threshold value, not performing time synchronization.
4. A clock synchronization device applied to an ammeter communication module is characterized by comprising:
the acquisition module is used for acquiring the base meter time and the current time of the ammeter communication module; the base meter time represents the time of the household electric meter corresponding to the electric meter communication module;
the judging module is used for judging whether the current time of the ammeter communication module meets a time synchronization triggering condition or not; if yes, synchronizing the current time of the ammeter communication module by taking the base meter time as a reference;
the device further comprises: a processing module;
the acquisition module is also used for acquiring the time of the ammeter communication module during the last time of time synchronization;
the processing module is used for determining that the current time of the ammeter communication module meets a time synchronization triggering condition when the difference value between the current time of the ammeter communication module and the ammeter communication module time of the last time of time synchronization is larger than or equal to a first threshold value and the difference value between the base meter time and the current time of the ammeter communication module is larger than or equal to a second threshold value;
the processing module is used for acquiring the current time of the ammeter communication module when the master station initiates a time setting request instruction to the ammeter communication module, and comparing the current time of the ammeter communication module with the master station time; if the difference value between the current time of the ammeter communication module and the time of the master station is less than 5min, triggering a time setting instruction by the ammeter communication module, sending the time of the master station to the ammeter communication module by the master station, and synchronizing the current time of the ammeter communication module by taking the time of the master station as a reference; and if the difference value between the current time of the ammeter communication module and the time of the master station is greater than or equal to 5min, the ammeter communication module generates an ammeter clock out-of-tolerance event and reports the ammeter clock out-of-tolerance event to the master station.
5. The apparatus of claim 4,
and the processing module is further used for not performing time synchronization and timing according to the software running time of the single chip microcomputer of the ammeter communication module when the difference value between the current time of the ammeter communication module and the time of the ammeter communication module in the last time of time synchronization is smaller than a first threshold value.
6. The apparatus of claim 5,
the processing module is further configured to not perform time synchronization when a difference between the base meter time and the current time of the electricity meter communication module is smaller than a second threshold.
7. A meter communication module comprising a processor and a memory, said memory storing machine executable instructions executable by said processor, said processor being configured to perform said machine executable instructions to implement the clock synchronization method of any one of claims 1 to 3.
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|---|---|---|---|---|
| WO2006129269A2 (en) * | 2005-06-02 | 2006-12-07 | Philips Intellectual Property & Standards Gmbh | Method to synchronize locally provided clocks of different communication nodes of a time-triggered communication system |
| CN105446122A (en) * | 2016-01-13 | 2016-03-30 | 国家电网公司 | Electric energy meter clock calibration method |
| CN108919172A (en) * | 2018-07-27 | 2018-11-30 | 国家电网有限公司 | A kind of automatic time synchronization method of electric energy meter, device and terminal device |
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| WO2014048461A1 (en) * | 2012-09-26 | 2014-04-03 | Nokia Siemens Networks Oy | Assessing timing synchronisation |
| CN108988975B (en) * | 2018-07-04 | 2020-06-19 | 国网浙江宁波市奉化区供电有限公司 | Correction method and device for ammeter clock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129269A2 (en) * | 2005-06-02 | 2006-12-07 | Philips Intellectual Property & Standards Gmbh | Method to synchronize locally provided clocks of different communication nodes of a time-triggered communication system |
| CN105446122A (en) * | 2016-01-13 | 2016-03-30 | 国家电网公司 | Electric energy meter clock calibration method |
| CN108919172A (en) * | 2018-07-27 | 2018-11-30 | 国家电网有限公司 | A kind of automatic time synchronization method of electric energy meter, device and terminal device |
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