CN103368719A - Time setting system and time setting method in PLC-based electricity utilization information collecting system - Google Patents
Time setting system and time setting method in PLC-based electricity utilization information collecting system Download PDFInfo
- Publication number
- CN103368719A CN103368719A CN2012100849442A CN201210084944A CN103368719A CN 103368719 A CN103368719 A CN 103368719A CN 2012100849442 A CN2012100849442 A CN 2012100849442A CN 201210084944 A CN201210084944 A CN 201210084944A CN 103368719 A CN103368719 A CN 103368719A
- Authority
- CN
- China
- Prior art keywords
- time
- concentrator
- message
- collector
- plc
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a time setting system and a time setting method in a PLC-based electricity utilization information collecting system. The time setting system comprises a time setting service device, a collecting device and a concentrator. The time setting service device further comprises a GPS receiving device, a CPU and a PLC communication module, wherein the time setting service device is connected with an electricity utilization information collecting system through a PLC; the time setting service device provides standard time for the concentrator through the PLC after satellite time is obtained; the concentrator is connected with the time setting service device and the collecting device through the PLC, time information can be acquired from the time setting service device and concentrator time can be corrected, and the time information is sent to the collecting device; the collecting device is connected with the concentrator, collecting device time can be corrected according to the time provided by the concentrator, and accurate time setting of the whole electricity utilization information collecting system can be finally finished; information of electricity utilization at preset time can be collected, and complete electricity utilization information can be timely acquired by the power grid; high accuracy, timely property and great performance of power grid operation and management can be realized.
Description
Technical field
The present invention relates to the intelligent power technical field, more particularly, relate to a kind of based in the power information acquisition system of PLC to the time system and method.
Background technology
To the time refer to provide for equipment the service of time reference signal, it is the basis of the common completion system function of distinct device.Along with the continuous expansion of electric power system scale and the gradually raising of electrical network intelligent level, electrical network is more and more higher for the required precision of time unification.At present, adopted a large amount of PLC (Power Line Carrier: the power line carrier) communication technology in the power information acquisition system, and in the plc communication net, do not adopt the precise time simultaneous techniques, and inner each terminal of power information acquisition system widely distributed and disperseing, cause the time error between concentrator, the collector larger, increase along with running time, accumulated error can be increasing, real-time and reliability that this is difficult to guarantee power information data more do not meet the demand for development that the intelligent power peak and valley time is valuated.
In order to address the above problem, being necessary increases timing device in the plc communication net, and adopt high-precision to the time algorithm, with guarantee between concentrator, the collector clock synchronous, realize the time unification in the power information acquisition system.There is not timing device in current power information acquisition system based on PLC, the time of master station computer is exactly the standard time of system, concentrator to main website transmitting time request message carry out to the time, because it is highly accurate that the uncertainty of the time-delay of the network between main website and the concentrator, the setting means in the conventional P LC power information acquisition system are difficult to realize.Simultaneously, need the precise time benchmark to finish the power information collection of particular moment in the intelligent grid, guarantee the normal operation of whole system.This is that the setting means of conventional P LC power information acquisition system is difficult to realize.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of based in the power information acquisition system of PLC to the time system and method, this to the time system based on GPS, time precision can reach nanosecond, and to the time to the time realize by plc communication between service equipment and concentrator, the collector, avoided between main website of the prior art and the concentrator to the time the network delay uncertain problem, can satisfy in the power information acquisition system high precision technology requirement for time synchronized.
For this reason, the invention provides following technical scheme:
A kind of based in the power information acquisition system of PLC to the time system, comprise to the time service equipment, concentrator and collector, wherein:
To the time service equipment, be connected to the power information acquisition system by PLC, provide the standard time by PLC to concentrator after obtaining satellite time;
Concentrator, by PLC connect to the time service equipment and collector, from described to the time service equipment acquisition time information, check and correction concentrator time, and described temporal information sent to collector;
Collector connects concentrator by PLC, proofreads the collector time according to the temporal information that concentrator provides.
A kind of based on the setting means in the power information acquisition system of PLC, be used for to realize the power information acquisition system concentrator, collector and to the time between the service equipment accurately to the time, wherein to the time service equipment further comprise GPS receiver, CPU and plc communication module, the method may further comprise the steps:
Step 1: concentrator to the time service equipment initiate to the time request message, to the time service equipment to the time reply in the message and send the standard time of obtaining to concentrator by PLC, then concentrator is according to the clock of standard time check and correction oneself;
Step 2: concentrator to collector send to the time instruction message, collector carry out to the time, collector to the time success after, to concentrator send to the time confirmation message;
Step 3: concentrator to do not have to send to the time confirmation message collector carry out point-to-point to the time.
The invention has the beneficial effects as follows: concentrator, collector can to the time service equipment obtain the standard time, realize concentrator, collector accurately to the time, in order to finish the power information collection of predetermined instant, be convenient to electrical network and in time obtain complete power information, realize operation of power networks and management more accurate, timely, good performance.
Description of drawings
In order to be illustrated more clearly in the present invention, below in conjunction with accompanying drawing embodiments of the invention are specifically described, wherein:
Fig. 1 be provided by the present invention to the time system structured flowchart;
Fig. 2 be shown in Fig. 1 to the time service equipment the concrete structure block diagram;
Fig. 3 is the block diagram of setting means provided by the present invention;
Fig. 4 is the message structure block diagram in the setting means provided by the present invention.
Embodiment
In order to make those skilled in the art understand better the scheme of the embodiment of the invention, below in conjunction with drawings and embodiments the embodiment of the invention is described in further detail.
Below, the embodiment of the invention take based on GPS to the time service equipment set forth basic thought of the present invention as example, in fact the present invention can also adopt other forms for example based on the Big Dipper to the time service equipment.
Fig. 1 be provided by the present invention based in the power information acquisition system of PLC to the time system structured flowchart.This to the time system comprise to the time service equipment 1, concentrator 2 and collector 3, wherein: to the time service equipment 1, the inside PLC communication module, can be connected to the power information acquisition system by PLC in the optional position in this district's power circuit, it provides the standard time by PLC to concentrator 2 after obtaining satellite time; Concentrator 2, by PLC connect to the time service equipment 1 and collector 3, according to obtain to the time service equipment 1 temporal information, check and correction 2 times of concentrator, and described temporal information sent to collector 3; Collector 3 connects concentrator 2 by PLC, check and correction 3 times of collector time that provide according to concentrator 2.
As shown in Figure 2, based on GPS to the time service equipment 1 comprise GPS receiver 11, CPU 12 and plc communication module 13, wherein: GPS receiver 11 be used for to receive satellite time; CPU 12, connect GPS receiver 11 and plc communication module 13, can process the satellite time that receives, and are converted into UTC (Universal Time Coordinated: world concordant time) time; Plc communication module 13 provides the UTC time by PLC for the concentrator 2 in the power information acquisition system.This to the time service equipment 1 have advantages of that antijamming capability is strong, receiving sensitivity is high, simple in structure, cost is low, reliable operation and adopt the design of full modularization plug and play, flexible configuration, easy to maintenance.
Shown in Figure 1 to the time system the course of work as follows:
To the time service equipment 1 receive satellite time, and described satellite time is processed, the UTC time will be converted between the satellite, then the UTC time is sent to concentrator 2 by PLC, concentrator 2 according to from described to the time service equipment 1 temporal information check and correction concentrator time of obtaining, and described temporal information sent to collector 3 by PLC; The temporal information check and correction collector time that collector 3 provides according to concentrator 2, finally finish the concentrator in this district and collector accurately to the time, in order to finish the power information collection of predetermined instant, be convenient to electrical network and in time obtain complete power information, realize operation of power networks and management more accurate, timely, good performance.
Fig. 3 is the block diagram based on the setting means in the power information acquisition system of PLC that the embodiment of the invention provides, the method be used for realizing shown in Figure 1 to the time system concentrator 2, collector 3 and to the time between the service equipment 1 accurately to the time, wherein to the time service equipment 1 further comprise as shown in Figure 2 GPS receiver 11, CPU 12 and plc communication module 13.In addition, mention in this setting means to the time instruction message, to the time reply message structured flowchart as shown in Figure 4, comprise heading 41, time stamp territory 42, time difference domain 43 and message checking 44, wherein the standard time is deposited in time stamp territory 42, time difference domain 43 deposit CPU process message time and PLC module message processing delay cumulative time and, the concrete steps of this setting means are as follows:
Step S30: concentrator 2 to the time service equipment 1 obtain the standard time, then concentrator is according to the clock of standard time check and correction oneself;
Step S31: concentrator 2 to collector 3 send to the time instruction message, collector 3 carry out to the time, during 3 pairs of collectors after the success, to concentrator 2 send to the time confirmation message;
Step S32: concentrator 2 to do not have to send to the time confirmation message collector 3 carry out point-to-point to the time.
Step S30 when wherein, realizing 2 pairs of concentrators may further include again following steps:
Step S301: concentrator 2 to the time service equipment 1 initiate to the time request message, to the time service equipment 1 receive to the time request message, obtain current satellite time and convert the standard time to, then to described concentrator 2 send to the time reply message, and to the time reply in the time stamp territory 42 of message and add a cover timestamp.
If receive to the time reply message node be not described concentrator 2, the collector 3 that then doubles as relaying is processed messages, fills in time difference domain 43, E-Packet to next node, until receive to the time reply message node be described concentrator 2.
Step S302: concentrator 2 receive to the time reply message, change is at the current time: the current time=time stamp territory time+time difference domain time+CPU processes message time+PLC module message processing delay, and the specific descriptions of wherein processing message time, PLC module message processing delay about time stamp territory time, time difference domain time, CPU will elaborate in conjunction with Fig. 4 in the back.
Wherein, to the time service equipment 1 to concentrator 2 send to the time when replying message, have following 2 kinds of situations:
Situation 1: when to the time service equipment 1 when being the neighbor node of concentrator 2, to the time between service equipment 1 and the concentrator 2 to the time message without any need for transfer.Concentrator 2 receive to the time reply message after, for guarantee to the time precision, need to process message time and PLC module message processing delay at time in time stamp territory 42 compensation concentrator CPU, the internal clocking that can guarantee concentrator 2 with to the time service equipment 1 keep highly consistent.Specific implementation be concentrator 2 receive to the time reply message, obtain the time in time stamp territory 42, after the CPU of concentrator 2 processed ENMES, the 2 change current time of concentrator were:
The current time=time stamp territory time+concentrator CPU processes message time+concentrator PLC module message processing delay,
Then, finish during 2 pairs of concentrators.
Situation 2: if to the time service equipment 1 be the multi-hop node of concentrator 2, then to the time service equipment 1 will to the time reply message and send to the contiguous collector that doubles as relaying, this collector node that doubles as relaying receive to the time reply message, precision when guaranteeing 2 pairs of concentrators, need compensation to the time reply the time delay that message produces in the transfer process, specific implementation be the collector node that doubles as relaying receive to the time reply message, after message information is finished dealing with, calculate CPU message processing time and the PLC module message processing delay of this collector that doubles as relaying, the CPU that in time difference domain, fills in this collector node that doubles as relaying process message time and PLC module message processing delay time and.Forward the packet the collector that doubles as relaying to next, next doubles as the collector of relaying and carries out identical operation, until concentrator 2 nodes receive to the time reply message.Concentrator 2 receive to the time reply message, obtain the time in time stamp territory 42, after the CPU of concentrator 2 processed ENMES, the 2 change current time of concentrator were:
The current time=time stamp territory time+time difference domain time+concentrator CPU processes message time+concentrator PLC module message processing delay, wherein the time difference domain time for the CPU of the collector node that respectively doubles as relaying process message time and PLC module message processing delay cumulative time and.
Then, finish during 2 pairs of concentrators.
Wherein, realize collector to the time step S31 may further include again following steps:
Step S311: concentrator 2 broadcasting to the time instruction message.
Step S312: collector 3 receive to the time process behind the instruction message, the change current time is: the current time=time stamp territory time+time difference domain time+collector C PU processes message time+collector PLC module message processing delay.
Step S313: collector is to after the time success, to concentrator send to the time confirmation message.
Collector 3 to the time process in, have equally following 2 kinds of situations:
Situation 1: when collector 3 is the neighbor node of concentrator 2, between collector 3 and the concentrator 2 to the time message without any need for transfer.Collector 3 receive to the time reply message after, with concentrator 2 to the time step S302 situation 1 identical, calculate collector the current time=time stamp territory time+collector C PU processes message time+collector PLC module message processing delay.
Situation 2: if collector 3 is the multi-hop node of concentrator 2, then concentrator 2 broadcasting to the time instruction message forwarding that need to double as the collector of relaying could arrive described collector 3, the described collector node that doubles as relaying receive to the time instruction message, calculate CPU message processing time and the PLC module message processing delay of the collector that doubles as relaying, the CPU that in time difference domain, fills in the collector node that doubles as relaying process message time and PLC module message processing delay time and.Forward the packet the collector that doubles as relaying to next, next doubles as the collector of relaying and carries out identical operation, until described collector 3 nodes receive to the time reply message.The situation 2 of step S302 is identical during with 2 pairs of concentrators, described collector 3 calculate the current time=time stamp territory time+time difference domain time+collector C PU processes message time+collector PLC module message processing delay, wherein the time difference domain time for the CPU of the collector node that respectively doubles as relaying process message time and PLC module message processing delay cumulative time and.
In addition, among the step S32 concentrator 2 and collector 3 carry out point-to-point to the time, these collectors 3 be not to the time success collector 3, not to concentrator 2 send to the time confirmation message, its setting means and step S31 collector to the time method identical, difference be this moment concentrator 2 no longer be broadcasting to the time instruction message, but directly to these collectors send to the time information, be in order to ensure whole collectors to the time success.
Below in conjunction with Fig. 4 specifically describe to the time instruction message, to the time reply implication and the computational methods that the form of message and above-mentioned time stamp territory time, time difference domain time, CPU process message time, PLC module message processing delay.
As shown in Figure 4, message comprises heading 41, time stamp territory 42, time difference domain 43 and message checking 44.Wherein the standard time is deposited in time stamp territory 42, time difference domain 43 deposit CPU process message time and PLC module message processing delay cumulative time and.The above is about having specifically described time stamp territory time in the message and the computational methods of time difference domain time in the description of Fig. 3, the below will specifically describe implication and the computational methods that CPU processes message time, PLC module message processing delay.
At first, we analyze the message processing time of CPU.The message processing time of CPU refers to that CPU is from receiving start of heading to handling the used time till the message.The length of this time and message, the disposal ability of CPU are relevant, and the message processing time of CPU is a few tens of milliseconds to arrive several seconds in based on the power information acquisition system of PLC, to equipment to the time certain influence is arranged, therefore need calculate accurately.
Since to the time message repeating process in, the collector that doubles as relaying receive to the time message transmit, so may occur a collector node repeatedly receive to the time message situation, as preferably, in the process that the CPU of collector processes message, need to judge message according to the timestamp of message, if the message of receiving identical time stamp then only to receive for the first time to the time message process, other message is selected to abandon after CPU judges.
The plc communication module receives that whenever (bit) data just produce an interrupt requests to CPU, notice CPU takes this bit data away, therefore CPU can determine to receive according to the moment of interrupting producing the time started of message, and then the message processing time of calculating CPU.
CPU processes the computational methods of message time:
The 1st (bit) backward CPU that the plc communication module demodulates message sends for the first time interrupt requests, after CPU receives this interrupt requests, read the PLC module data, and preserve the current time T1 of real-time clock, and the interruption that produces when receiving for the subsequent bit of this message, CPU only does the PLC module data and reads processing, no longer do time-related computing, after CPU receives all positions of message and carries out the message checking processing, preserve the current time T2 of real-time clock, therefore have
CPU processes message time=T2-T1.
Next, we analyze the plc communication module again and receive message time delay.The time-delay that has produced 1bit during the demodulator demodulating data of PLC module, so PLC module message processing delay is the 1bit data transfer time.
The above by reference to the accompanying drawings 1-4 to provided by the present invention to the time system and setting means be described, by this to the time system and setting means can realize to the time service equipment to concentrator, collector accurately to the time, in order to finish the power information collection of predetermined instant, be convenient to electrical network and in time obtain complete power information, realize operation of power networks and management more accurate, timely, good performance.
Above the embodiment of the invention is described in detail, has used embodiment herein the present invention is set forth, the explanation of above embodiment just is used for helping to understand system of the present invention and equipment; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
- One kind based in the power information acquisition system of PLC to the time system, comprise to the time service equipment, concentrator and collector, wherein:To the time service equipment, be connected to the power information acquisition system by PLC, provide the standard time by PLC to concentrator after obtaining satellite time;Concentrator, by PLC connect to the time service equipment and collector, from described to the time service equipment acquisition time information, check and correction concentrator time, and described temporal information sent to collector;Collector connects concentrator by PLC, proofreads the collector time according to the temporal information that concentrator provides.
- According to claim 1 to the time system, wherein said to the time service equipment further comprise GPS receiver, CPU and plc communication module, wherein:The GPS receiver is used for receiving satellite time;CPU connects GPS receiver and plc communication module, and the satellite time that receives is processed, and is converted into the UTC time;The plc communication module provides the UTC time by PLC for concentrator.
- 3. one kind based on the setting means in the power information acquisition system of PLC, be used for to realize the power information acquisition system concentrator, collector and to the time between the service equipment accurately to the time, wherein said to the time service equipment further comprise GPS receiver, CPU and plc communication module, the method may further comprise the steps:Step 1: concentrator to the time service equipment initiate to the time request message, to the time service equipment to the time reply in the message and send the standard time of obtaining to concentrator by PLC, then concentrator is according to the clock of standard time check and correction oneself;Step 2: concentrator to collector send to the time instruction message, collector carry out to the time, collector to the time success after, to concentrator send to the time confirmation message;Step 3: concentrator to do not have to send to the time confirmation message collector carry out point-to-point to the time.
- 4. setting means according to claim 3, wherein said to the time instruction message and to the time reply message and comprise heading, time stamp territory, time difference domain and message checking, wherein the standard time is deposited in the time stamp territory, time difference domain deposit CPU process message time and PLC module message processing delay cumulative time and.
- 5. setting means according to claim 4, wherein said step 1 is further comprising the steps:Concentrator to the time service equipment initiate to the time request message, to the time service equipment receive to the time request message, obtain current satellite time and convert the standard time to, then to described concentrator send to the time reply message, and to the time reply in the time stamp territory of message and add a cover timestamp;If receive to the time reply message node be not described concentrator, then double as the collector for processing message of relaying, fill in time difference domain, E-Packet to next node, until receive to the time reply message node be described concentrator.
- 6. setting means according to claim 5, wherein said step is further comprising the steps:When to the time service equipment when being the neighbor node of concentrator, concentrator receive to the time reply message, obtain the time in time stamp territory, after the CPU of concentrator processed ENMES, the concentrator change current time was:The current time=time stamp territory time+concentrator CPU processes message time+concentrator PLC module message processing delay, then concentrator to the time finish;When to the time service equipment when being the multi-hop node of concentrator, then to the time service equipment will to the time reply message and send to the contiguous collector that doubles as relaying, until the concentrator node receive to the time reply message, concentrator receive to the time reply message, obtain the time in time stamp territory, after the CPU of concentrator processed ENMES, the concentrator change current time was:The current time=time stamp territory time+time difference domain time+concentrator CPU processes message time+concentrator PLC module message processing delay, wherein the time difference domain time for the CPU of the collector node that respectively doubles as relaying process message time and PLC module message processing delay cumulative time and, then concentrator to the time finish.
- 7. setting means according to claim 4, wherein said step 2 is further comprising the steps:Concentrator broadcasting to the time instruction message;Collector receive to the time process behind the instruction message, the change current time is: the current time=time stamp territory time+time difference domain time+collector C PU processes message time+collector PLC module message processing delay;Collector is to after the time success, to concentrator send to the time confirmation message.
- 8. setting means according to claim 7, wherein said step is further comprising the steps:When collector is the neighbor node of concentrator, between collector and the concentrator to the time message without any need for transfer, collector receive to the time reply message after, calculate collector the current time=time stamp territory time+collector C PU processes message time+collector PLC module message processing delay;When collector is the multi-hop node of concentrator, then concentrator broadcasting to the time instruction message forwarding that need to double as the collector of relaying could arrive described collector, described collector calculate the current time=time stamp territory time+time difference domain time+collector C PU processes message time+collector PLC module message processing delay, wherein the time difference domain time for the CPU of the collector node that respectively doubles as relaying process message time and PLC module message processing delay cumulative time and.
- 9. setting means according to claim 4, wherein said step 3 is further comprising the steps:Concentrator to do not have to send to the time confirmation message collector carry out point-to-point transmission to the time instruction message;Collector receive to the time process behind the instruction message, the change current time is: the current time=time stamp territory time+collector C PU processes message time+collector PLC module message processing delay;Collector is to after the time success, to concentrator send to the time confirmation message.
- 10. setting means according to claim 4, wherein said time difference domain deposit CPU process message time and PLC module message processing delay cumulative time and, wherein:Message processing time=T2-T1 of CPU, wherein T1 is the time that CPU reads the PLC module data for the first time, T2 is the time after CPU receives all of message and carries out the message checking processing;PLC module message processing delay is the 1bit data transfer time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100849442A CN103368719A (en) | 2012-03-28 | 2012-03-28 | Time setting system and time setting method in PLC-based electricity utilization information collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100849442A CN103368719A (en) | 2012-03-28 | 2012-03-28 | Time setting system and time setting method in PLC-based electricity utilization information collecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103368719A true CN103368719A (en) | 2013-10-23 |
Family
ID=49369325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100849442A Pending CN103368719A (en) | 2012-03-28 | 2012-03-28 | Time setting system and time setting method in PLC-based electricity utilization information collecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103368719A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978842A (en) * | 2015-06-10 | 2015-10-14 | 烟台东方威思顿电气股份有限公司 | Self-repair method of low-pressure concentrator clock |
| CN107222278A (en) * | 2017-04-21 | 2017-09-29 | 广州明珞汽车装备有限公司 | A kind of method for synchronizing time and system based on high speed data acquisition system |
| CN107276709A (en) * | 2017-04-21 | 2017-10-20 | 广州明珞汽车装备有限公司 | A kind of method for synchronizing time and system |
| CN107425882A (en) * | 2017-04-20 | 2017-12-01 | 北京智芯微电子科技有限公司 | A kind of calibration method and device of broadband power line communication network |
| CN108535543A (en) * | 2018-05-22 | 2018-09-14 | 宁波三星医疗电气股份有限公司 | Taiwan area phase recognition methods based on concentrator Yu ammeter synchronized sampling |
| CN110597120A (en) * | 2019-09-16 | 2019-12-20 | 北京无线电测量研究所 | Acquisition terminal and method based on power line carrier |
| CN110677211A (en) * | 2019-09-27 | 2020-01-10 | 宁波三星医疗电气股份有限公司 | Time synchronization method and device and power acquisition terminal |
| CN110932816A (en) * | 2019-12-24 | 2020-03-27 | 广州供电局有限公司计量中心 | Accurate time synchronization method for electric energy meter network |
| CN111179570A (en) * | 2020-01-14 | 2020-05-19 | 上海辉电电力设备工程有限公司 | Low-voltage distribution room acquisition equipment clock synchronization method based on HPLC carrier communication |
| CN115567145A (en) * | 2022-11-30 | 2023-01-03 | 厦门亿力吉奥信息科技有限公司 | Time correction method and terminal based on power grid multi-source data fusion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278678A (en) * | 2000-08-04 | 2001-01-03 | 王元虎 | Satellite clock time system transmitted as carrier in low-voltage electric distribution network |
| US20080298398A1 (en) * | 2007-06-04 | 2008-12-04 | John C Eidson | Transparent Spider |
| CN101964689A (en) * | 2010-08-20 | 2011-02-02 | 惠州中城电子科技有限公司 | Method for improving time accuracy of electric energy information acquisition system |
-
2012
- 2012-03-28 CN CN2012100849442A patent/CN103368719A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278678A (en) * | 2000-08-04 | 2001-01-03 | 王元虎 | Satellite clock time system transmitted as carrier in low-voltage electric distribution network |
| US20080298398A1 (en) * | 2007-06-04 | 2008-12-04 | John C Eidson | Transparent Spider |
| CN101964689A (en) * | 2010-08-20 | 2011-02-02 | 惠州中城电子科技有限公司 | Method for improving time accuracy of electric energy information acquisition system |
Non-Patent Citations (1)
| Title |
|---|
| 宋崇汶等: ""利用GPS对计算机实现精确授时"", 《计算机测量与控制》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104978842A (en) * | 2015-06-10 | 2015-10-14 | 烟台东方威思顿电气股份有限公司 | Self-repair method of low-pressure concentrator clock |
| CN104978842B (en) * | 2015-06-10 | 2018-03-06 | 烟台东方威思顿电气有限公司 | A kind of method of low pressure concentrator clock self-regeneration |
| CN107425882A (en) * | 2017-04-20 | 2017-12-01 | 北京智芯微电子科技有限公司 | A kind of calibration method and device of broadband power line communication network |
| CN107222278A (en) * | 2017-04-21 | 2017-09-29 | 广州明珞汽车装备有限公司 | A kind of method for synchronizing time and system based on high speed data acquisition system |
| CN107276709A (en) * | 2017-04-21 | 2017-10-20 | 广州明珞汽车装备有限公司 | A kind of method for synchronizing time and system |
| CN108535543A (en) * | 2018-05-22 | 2018-09-14 | 宁波三星医疗电气股份有限公司 | Taiwan area phase recognition methods based on concentrator Yu ammeter synchronized sampling |
| CN110597120A (en) * | 2019-09-16 | 2019-12-20 | 北京无线电测量研究所 | Acquisition terminal and method based on power line carrier |
| CN110677211A (en) * | 2019-09-27 | 2020-01-10 | 宁波三星医疗电气股份有限公司 | Time synchronization method and device and power acquisition terminal |
| CN110932816A (en) * | 2019-12-24 | 2020-03-27 | 广州供电局有限公司计量中心 | Accurate time synchronization method for electric energy meter network |
| CN111179570A (en) * | 2020-01-14 | 2020-05-19 | 上海辉电电力设备工程有限公司 | Low-voltage distribution room acquisition equipment clock synchronization method based on HPLC carrier communication |
| CN115567145A (en) * | 2022-11-30 | 2023-01-03 | 厦门亿力吉奥信息科技有限公司 | Time correction method and terminal based on power grid multi-source data fusion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103368719A (en) | Time setting system and time setting method in PLC-based electricity utilization information collecting system | |
| CN107329111B (en) | Rapid positioning method and system based on wireless TOF | |
| CN101335587B (en) | Accurate time synchronization method for industrial wireless network | |
| CN113315546B (en) | Time synchronization method of low-voltage distribution room acquisition system based on HPLC carrier | |
| CN102087132B (en) | Wireless communication processing method for water meter | |
| CN107959969A (en) | A kind of method for synchronizing time applied to transient state recording type fault detector | |
| CN102547969A (en) | High-accuracy wireless clock synchronization system for power system | |
| CN103108388A (en) | Method, device and system of wireless sensor network clock synchronization | |
| CN103178917B (en) | A kind of clock synchronizing method of collaboration communication, system and information taken node | |
| CN108900292B (en) | Error accumulation-free clock synchronization system applied to wireless sensor network | |
| CN108957231B (en) | Distributed system and method for data interaction between host machine and submachine of distributed system | |
| CN104468247A (en) | Method and device for acquiring networking transmission network time delay of sampling value of intelligent transformer substation | |
| CN114828200B (en) | 5G-TSN-based power equipment time synchronization method | |
| CN105372677A (en) | Time monitoring method and device | |
| CN109246192A (en) | Block catenary system and its implementation based on Beidou RDSS | |
| CN104581870A (en) | Wireless sensor network based on energy acquisition and low-delay routing method thereof | |
| CN103747516A (en) | Event time tag later time synchronization method in wireless sensor network | |
| CN102447745A (en) | Method and device for processing residence time of message on transparent clock (TC) equipment | |
| CN203166942U (en) | Time synchronization device based on IEEE1588 protocol | |
| CN113812167B (en) | Method for reading a fluid table | |
| CN113518309A (en) | TDOA (time difference of arrival) estimation method and system for ultra-wideband indoor positioning | |
| CN106710182A (en) | Data collector having timing function | |
| CN205232242U (en) | Big dipper GPS clock synchronization system based on wind power converter | |
| CN104753622A (en) | Low-overhead time synchronization method based on receivers under start network | |
| CN102413055A (en) | System and method for marking timestamps of messages based on software and hardware |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |