CN102131281A - Clock calibration method of wireless meter reading system and clock calibration method of distributed system - Google Patents
Clock calibration method of wireless meter reading system and clock calibration method of distributed system Download PDFInfo
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- CN102131281A CN102131281A CN2010105191666A CN201010519166A CN102131281A CN 102131281 A CN102131281 A CN 102131281A CN 2010105191666 A CN2010105191666 A CN 2010105191666A CN 201010519166 A CN201010519166 A CN 201010519166A CN 102131281 A CN102131281 A CN 102131281A
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Abstract
The invention discloses a clock calibration method of a wireless meter reading system. The clock calibration method comprises the following steps: S1, all management servers perform network time calibration through a NCP (network control protocol) so as to ensure that clocks of all the management servers are consistent; S2, a meter reading machine updates clock thereof while downloading a meter reading task; S3, during the meter reading process, the meter reading machine and main modules of all groups perform one-time time calibration; and S4, during the process of time-controlled communication in the groups, the main modules start time-controlled relay communication by utilizing old clocks and send new clocks to all sub-module members in the groups through a clock calibration command, and then the whole groups adopt the new clocks immediately. The clock calibration method of the wireless meter reading system provided by the invention has the beneficial effects that clock offset in and among the groups in a meter body is eliminated, clock accuracy in and among the groups is ensured, and conflict in time-controlled communication is effectively avoided.
Description
Technical field
The invention belongs to the wireless communication technique field, relate to a kind of wireless kilowatt meter reading-out system, relate in particular to a kind of clock correcting method of wireless kilowatt meter reading-out system; Simultaneously, the invention still further relates to a kind of distributed system clock correcting method.
Background technology
In distributed system, each module all has the time of oneself.When distributed system adopts the mode of set time communication, must guarantee each module time unanimity, could guarantee the reliability of communication.
In a wireless kilowatt meter reading-out system, comprise several management servers, some hand-held meter readers, some gas meter, flow meters, and be divided into N group according to the installation site of gas meter, flow meter.Promptly adopt the communication modes of set time in each group, in regular time every day, the primary module of group is initiated communication, the submodule response, and the necessary clock unanimity that guarantees gas meter, flow meter in the group could guarantee normally carrying out of communication.Communication must take place as adopting identical communication frequency band in different groups in the different time, avoid mutual interference.
Existing wireless kilowatt meter reading-out system faces following problem:
1, the clock of each gas meter, flow meter module always has error, and the accumulative total of error is very considerable just, and such as differing 1S every day, accumulative total will differ 30s in 1 month, how to solve cumulative errors.
2, in the gas meter, flow meter group, in case the clock of certain module occurs deviation has taken place, existing system can't be proofreaied and correct.
3, existing system can't guarantee clock accuracy between the group, can't guarantee that regularly communication does not conflict simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: a kind of clock correcting method of wireless kilowatt meter reading-out system is provided, can solves the clock jitter in the table body group.
In addition, the present invention also provides a kind of distributed system clock correcting method, can solve the clock jitter in the distributed system group.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of clock correcting method of wireless kilowatt meter reading-out system, described wireless kilowatt meter reading-out system comprise some management servers, some meter readers, some table bodies; Installation site according to the table body is divided into a plurality of groups with described some table bodies, and each group comprises primary module and plurality of sub module;
Described clock correcting method comprises the steps:
S1, all management servers be by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities;
When S2, meter reader are checked meter task in download, upgrade the meter reader clock;
S3, when checking meter, the primary module of meter reader and all groups to the time once;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S4, the group, and whole subsequently group is adopted new clock immediately.
As a preferred embodiment of the present invention, described step S4 comprises:
In the regularly communication of setting-up time section of every night, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock; If submodule and the meter reader of table body to the time, submodule that night is with old times clock opening timing relaying communication, if submodule and the communication of primary module timing relaying successfully, are then adopted primary module to give timing clock, and come into force; If the regularly not success of relaying communication of that night submodule and primary module, submodule was brought into use the given new clock of meter reader in second day; If primary module and the meter reader of table body to the time, primary module adopted the old times clock to start regularly relaying communication that night, by the clock alignment order new clock was issued all submodule members of this group, whole subsequently group is adopted new clock immediately.
As a preferred embodiment of the present invention, described step S4 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock;
If table submodule of body and meter reader to the time, submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module, then adopt primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use the given new clock of meter reader;
If table primary module of body and meter reader to the time, primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
As a preferred embodiment of the present invention, described step S4 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock;
The primary module of meter reader and each group to the time; Primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock;
When the submodule of primary module and this group can't the communication success, meter reader can't obtain the information of this submodule, then meter reader and this submodule to the time; Submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use the given new clock of meter reader.
A kind of clock correcting method of distributed system, described distributed system comprise some to the time unit, some groups, each group comprises primary module and plurality of sub module;
Described clock correcting method comprises the steps:
S201, upgrade to the time unit clock;
S202, to the time unit and all groups primary module to the time;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S203, the group, and whole subsequently group is adopted new clock immediately.
As a preferred embodiment of the present invention, described step S203 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have standard time clock to the time unit and table body to the time, the table body preserve to the time unit clock, do not upgrade at once, the table body is still with old times clock operation, record to the time unit clock and old times clock error;
To the time unit and each group primary module to the time; Primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
As a preferred embodiment of the present invention, described step S203 further comprises:
When the submodule of primary module and this group can't the communication success, to the time unit and this submodule to the time; Submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use to the time unit given new clock.
As a preferred embodiment of the present invention, described distributed system also comprises some management servers, described clock correcting method also comprises step S200 between step S201: all management servers are by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities.
Beneficial effect of the present invention is: the clock correcting method of the wireless kilowatt meter reading-out system that the present invention proposes can solve in the table body group, the clock jitter between the group; Guarantee clock accuracy in the group, between the group, guarantee that effectively regularly communication does not conflict.
Description of drawings
Fig. 1 is the flow chart of clock correcting method of the present invention.
Fig. 2 is the flow chart of clock correcting method step S4 of the present invention.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, the present invention has disclosed a kind of clock correcting method of wireless kilowatt meter reading-out system, and described wireless kilowatt meter reading-out system comprises some management servers, some meter readers, some gas meter, flow meters (certainly being other table bodies); Installation site according to gas meter, flow meter is divided into a plurality of groups with described some gas meter, flow meters, and each group comprises primary module and plurality of sub module;
Described clock correcting method comprises the steps:
S1, all management servers be by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities;
When S2, meter reader are checked meter task in download, upgrade the meter reader clock;
S3, when checking meter, the primary module of meter reader and all groups to the time once;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S4, the group, and whole subsequently group is adopted new clock immediately.
See also Fig. 2, in the present embodiment, described step S4 comprises the steps:
In the regularly communication of setting-up time section of every night, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and gas meter, flow meter to the time, gas meter, flow meter is preserved the meter reader clock, does not upgrade at once, gas meter, flow meter is still with old times clock operation, the error of record meter reader clock and old times clock.
If the submodule of-gas meter, flow meter and meter reader to the time, submodule that night is with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If the regularly not success of relaying communication of that night submodule and primary module, submodule was brought into use the given new clock of meter reader in second day.
If the primary module of-gas meter, flow meter and meter reader to the time, primary module adopted the old times clock to start regularly relaying communication that night, by the clock alignment order new clock was issued all submodule members of this group, whole subsequently group is adopted new clock immediately.
In sum, the clock correcting method of the wireless kilowatt meter reading-out system that the present invention proposes can solve the clock jitter in the gas meter, flow meter group, between the group; Guarantee clock accuracy in the group, between the group, guarantee that effectively regularly communication does not conflict.
Embodiment two
The difference of present embodiment and embodiment one is that in the present embodiment, described step S4 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives.
Have the meter reader of standard time clock and gas meter, flow meter to the time, gas meter, flow meter is preserved the meter reader clock, does not upgrade at once, gas meter, flow meter is still with old times clock operation, the error of record meter reader clock and old times clock.Under normal circumstances, hand-held meter reader general only with the primary module of each group to the time; When the submodule of primary module and this group can't the communication success, hand-held meter reader can't obtain the information of this submodule, then with this submodule to the time.
The primary module and the meter reader of gas meter, flow meter are right, primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
If the submodule of gas meter, flow meter and meter reader to the time, submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module, then adopt primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use the given new clock of meter reader.
Embodiment three
Step 1: (solving the clock jitter in the group)
1.1 when initial, the hand-held meter reader by standard time clock is provided with the time to each gas meter, flow meter in the group.
1.2 the timing communication of every day is initiated by primary module, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives.(, can guarantee regularly normally carrying out of communication because one day error is little.By every day to the time, eliminate cumulative errors).
1.3 to constantly, gas meter, flow meter is preserved the meter reader clock, does not upgrade at once as the meter reader of standard time clock and gas meter, flow meter, gas meter, flow meter is still with old times clock operation, the error of record meter reader clock and old times clock.If this gauge outfit is a submodule, started opening timing relaying communication with the old times clock that night, if regularly relaying communication success is then adopted primary module to give timing clock, and come into force; If the hand-held given new clock of meter reader was brought into use in regularly not success of relaying communication on that night in second day.If this gauge outfit is a primary module, adopted that night the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock immediately.
Step 2: (solving the clock jitter between the group)
2.1 all management softwares by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities.
2.2 meter reader is downloaded when checking meter task, upgrades the meter reader clock.
2.3 every month is when checking meter, the primary module of meter reader and all groups to the time once.
2.4 that night, regularly during communication, primary module adopted the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group is adopted new clock immediately.
Embodiment four
The difference of present embodiment and above embodiment is that in the present embodiment, clock correcting method is not the clock alignment that only can be used for wireless kilowatt meter reading-out system, can also be used for other distributed systems.
Present embodiment discloses a kind of clock correcting method of distributed system, described distributed system comprise some to the time unit, some groups, each group comprises primary module and plurality of sub module.
Described clock correcting method comprises the steps:
S201, upgrade to the time unit clock;
S202, to the time unit and all groups primary module to the time;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S203, the group, and whole subsequently group is adopted new clock immediately.
Described step S203 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have standard time clock to the time unit and table body to the time, the table body preserve to the time unit clock, do not upgrade at once, the table body is still with old times clock operation, record to the time unit clock and old times clock error;
To the time unit and each group primary module to the time; Primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
When the submodule of primary module and this group can't the communication success, to the time unit and this submodule to the time; Submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use to the time unit given new clock.
Preferably, described distributed system also comprises some management servers, and described clock correcting method also comprises step S200 between step S201: all management servers are by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or substantive characteristics, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (9)
1. the clock correcting method of a wireless kilowatt meter reading-out system is characterized in that, described wireless kilowatt meter reading-out system comprises some management servers, some meter readers, some table bodies; Installation site according to the table body is divided into a plurality of groups with described some table bodies, and each group comprises primary module and plurality of sub module;
Described clock correcting method comprises the steps:
S1, all management servers be by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities;
When S2, meter reader are checked meter task in download, upgrade the meter reader clock;
S3, when checking meter, the primary module of meter reader and all groups to the time;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S4, the group, and whole subsequently group is adopted new clock immediately.
2. the clock correcting method of wireless kilowatt meter reading-out system according to claim 1 is characterized in that:
Described step S4 comprises:
In the regularly communication of setting-up time section of every night, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock; If submodule and the meter reader of table body to the time, submodule that night is with old times clock opening timing relaying communication, if submodule and the communication of primary module timing relaying successfully, are then adopted primary module to give timing clock, and come into force; If the regularly not success of relaying communication of that night submodule and primary module, submodule was brought into use the given new clock of meter reader in second day; If primary module and the meter reader of table body to the time, primary module adopted the old times clock to start regularly relaying communication that night, by the clock alignment order new clock was issued all submodule members of this group, whole subsequently group is adopted new clock immediately.
3. the clock correcting method of wireless kilowatt meter reading-out system according to claim 1 is characterized in that:
Described step S4 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock;
If table submodule of body and meter reader to the time, submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module, then adopt primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use the given new clock of meter reader;
If table primary module of body and meter reader to the time, primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
4. the clock correcting method of wireless kilowatt meter reading-out system according to claim 1 is characterized in that:
Described step S4 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have the meter reader of standard time clock and table body to the time, the table body is preserved the meter reader clock, does not upgrade at once, the table body is still with old times clock operation, the error of record meter reader clock and old times clock;
The primary module of meter reader and each group to the time; Primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
5. the clock correcting method of wireless kilowatt meter reading-out system according to claim 4 is characterized in that:
Described step S4 further comprises:
When the submodule of primary module and this group can't the communication success, meter reader can't obtain the information of this submodule, then meter reader and this submodule to the time; Submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use the given new clock of meter reader.
6. the clock correcting method of a distributed system is characterized in that, described distributed system comprise some to the time unit, some groups, each group comprises primary module and plurality of sub module;
Described clock correcting method comprises the steps:
S201, upgrade to the time unit clock;
S202, to the time unit and all groups primary module to the time;
Regularly during communication, primary module adopts the old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group in S203, the group, and whole subsequently group is adopted new clock immediately.
7. the clock correcting method of distributed system according to claim 6 is characterized in that:
Described step S203 comprises:
In the setting-up time section timing communication alignment time, to initiate by the primary module of each group, primary module is sent out each submodule to the clock of oneself, and submodule upgrades the time of oneself immediately with the time that receives;
Have standard time clock to the time unit and table body to the time, the table body preserve to the time unit clock, do not upgrade at once, the table body is still with old times clock operation, record to the time unit clock and old times clock error;
To the time unit and each group primary module to the time; Primary module to the time after adopt in the back to back alignment time section old times clock to start regularly relaying communication, by the clock alignment order new clock is issued all submodule members of this group, whole subsequently group adopts new clock.
8. the clock correcting method of distributed system according to claim 7 is characterized in that:
Described step S203 further comprises:
When the submodule of primary module and this group can't the communication success, to the time unit and this submodule to the time; Submodule to the time after in the back to back alignment time section, with old times clock opening timing relaying communication, if the regularly relaying communication success of submodule and primary module is then adopted primary module to give timing clock, and come into force; If submodule to the time after in the back to back alignment time section, the regularly not success of relaying communication of submodule and primary module, submodule to the time after a back to back alignment time section certain time point later use to the time unit given new clock.
9. the clock correcting method of distributed system according to claim 6 is characterized in that:
Described distributed system also comprises some management servers, and described clock correcting method also comprises step S200 between step S201: all management servers are by the NCP agreement, carry out network to the time, guarantee all management server clock unanimities.
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| CN114362871A (en) * | 2021-12-28 | 2022-04-15 | 江苏林洋能源股份有限公司 | Method for self-maintaining clock of electric energy meter group |
| CN114362871B (en) * | 2021-12-28 | 2024-01-05 | 江苏林洋能源股份有限公司 | Method for self-maintaining clock of electric energy meter group |
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Application publication date: 20110720 |