CN102932035B - Power line communication frequency band selection method, concentrator and power line meter reading system - Google Patents
Power line communication frequency band selection method, concentrator and power line meter reading system Download PDFInfo
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- CN102932035B CN102932035B CN201210401053.5A CN201210401053A CN102932035B CN 102932035 B CN102932035 B CN 102932035B CN 201210401053 A CN201210401053 A CN 201210401053A CN 102932035 B CN102932035 B CN 102932035B
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Abstract
The embodiment of the invention discloses a power line communication frequency band selection method, a concentrator and a power line meter reading system, relating to the field of power line communication. The power line communication frequency band selection method can be used for automatically selecting an appropriate communication frequency band when the power line communication frequency band is incapable of realizing normal communication, reducing the influence of noise on communication signals and increasing the meter-reading success rate. The power line communication frequency-band selection method disclosed by the embodiment of the invention comprises the following steps of: sending a first message to a wattmeter by using a first frequency band and receiving frequency-band feedback information from the electric meter, wherein the frequency-band feedback information is used for indicating whether the electric meter can normally receive the first message; and after judging that the electric meter cannot normally receive the first message by the first frequency band according to the frequency band feedback information, sending the first message to the electric meter by using other preset frequency band until obtaining the normal communication frequency band which can enable the electric meter can normally receive the first message.
Description
Technical field
The present invention relates to power line communication, particularly relate to a kind of system of selection of power line communication frequency range, concentrator and power line kilowatt meter reading-out system.
Background technology
In the prior art, be all often take manual type in electricity meter-reading work.Along with the expansion of electric power system, especially Every household has an ammeter, direct-furnish is goed deep into the measures such as family, and the workload of electricity meter-reading sharply increases, and only rely on manual work to be difficult to complete rapidly this work, and cost of labor is larger.Therefore, automated communications check meter become future electrical energy check meter development inexorable trend.As the one of automated communications reading technique, power line is used to become as the power line communication of the data transmission channels such as audio frequency, video, control signal the technology that Utilities Electric Co. pays close attention to.
Power line kilowatt meter reading-out system relies on existing power line, utilizes power line as communication network passage without the need to carrying out lapping construction again.Power line kilowatt meter reading-out system generally comprises user terminal, data acquisition equipment, distribution transforming concentrating equipment, server host.Usually, in a neighbourhood unit, comprise several user terminals, data acquisition equipment is responsible for the electric power data acquisition work to user terminal, and distribution transforming concentrating equipment is collected each data cell, and server host carries out final statistical work.
For power line kilowatt meter reading-out system, technical staff needs to utilize power line that each equipment in system is carried out to transfer of data work and controls communication.Inventor finds that in R&D process prior art at least exists following defect: in a power line communication system, if when power line fixed frequency range is subject to noise jamming or occurs that other affects the situation of proper communication, receiving device cannot be correct parsing signal of communication, therefore intrasystem communication can not normally be carried out, and finally affect the success rate that whole system is checked meter.
Summary of the invention
Embodiments of the invention technical problem to be solved is to provide a kind of system of selection of power line communication frequency range, concentrator and power line kilowatt meter reading-out system, can power line communication frequency range cannot proper communication time, the communications band that automatic selection is suitable, reduce noise to the impact of signal of communication, improve the success rate of checking meter.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
The invention provides a kind of system of selection of power line communication frequency range, comprising:
The first frequency range is used to send the first message to dynamometer instrument;
Receive the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message;
After judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message.
After judging that according to described frequency range feedback information described dynamometer instrument normally receives described first message by described first frequency range, described first frequency range is used to communicate with described dynamometer instrument.
Described use first frequency range sends the first message to dynamometer instrument, comprising: in first time period, use the first frequency range, sends the first message to described dynamometer instrument according to the time interval of presetting.
After the described proper communication frequency range of acquisition, also comprise: use described proper communication frequency range to gather the electric power data information of described dynamometer instrument.
Described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data, for representing the state information residing for the position of dynamometer instrument and dynamometer instrument.
Before described first frequency range of use sends described first message to described dynamometer instrument, also comprise: judge whether presently used frequency range is working frequency range.
A kind of concentrator, comprising:
Sending module, sends the first message to dynamometer instrument for using the first frequency range; Receiver module, for receiving the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message; Processor, for after judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message.
Described processor also for: after judging that according to described frequency range feedback information described dynamometer instrument normally receives described first message by described first frequency range, use described first frequency range to communicate with described dynamometer instrument.
Described sending module specifically for: in first time period, use the first frequency range, send the first message to described dynamometer instrument according to the time interval of presetting.
Described concentrator also comprises: acquisition module, for the electric power data information using described proper communication frequency range to gather described dynamometer instrument.
Described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data, for indicating the state information residing for the position of dynamometer instrument and dynamometer instrument.
A kind of power line kilowatt meter reading-out system, comprising:
Concentrator and at least one dynamometer instrument, described concentrator is connected by power line with described dynamometer instrument.Described concentrator is used for, the first frequency range is used to send the first message to dynamometer instrument, receive the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message, and, after judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message; Described dynamometer instrument is used for, and receives described first message from described concentrator, and is judging to send described frequency range feedback information after whether described first message can normally receive to described concentrator.
Described concentrator also for: after judging that described dynamometer instrument normally receives described first message by described first frequency range according to described frequency range feedback information, use described first frequency range to communicate with described dynamometer instrument.
Described concentrator specifically for: in first time period, use the first frequency range, send the first message to described dynamometer instrument according to the time interval of presetting.
Described concentrator also for: use described proper communication frequency range to gather the electric power data information of described dynamometer instrument.
Described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data, for indicating the state information residing for the position of dynamometer instrument and dynamometer instrument.
The system of selection of the power line communication frequency range of the embodiment of the present invention, concentrator and power line kilowatt meter reading-out system, the first message is sent to dynamometer instrument by using the first frequency range, receive the frequency range feedback information from dynamometer instrument, after judging that the first frequency range is not proper communication frequency range according to frequency range feedback information, continue use second frequency range and send the first message to dynamometer instrument, until obtain proper communication frequency range, can in power line channel communications band cannot proper communication time, the communications band that automatic selection is suitable, reduce noise to the impact of signal of communication, improve the success rate of checking meter.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of power line communication Frequency Band Selection method in the embodiment of the present invention;
Fig. 2 is the structural representation of concentrator in the embodiment of the present invention;
Fig. 3 is the structural representation of power line kilowatt meter reading-out system in the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of system of selection of power line communication frequency range, concentrator and power line kilowatt meter reading-out system, can power line communication frequency range cannot proper communication time, the communications band that automatic selection is suitable, reduces noise to the impact of signal of communication, improves the success rate of checking meter.
Below in conjunction with following accompanying drawing, the embodiment of the present invention is described in detail.
The present embodiment realizes the collection of the electric power data information to each dynamometer instrument by power line kilowatt meter reading-out system.Power line kilowatt meter reading-out system comprises from hardware view: concentrator and at least one dynamometer instrument, and concentrator and described dynamometer instrument are connected by power line, and carries out concentrator and the mutual communication of dynamometer instrument by power line.In power line kilowatt meter reading-out system, each dynamometer instrument has unique discernible indications, uniquely can determine the position of dynamometer instrument in kilowatt meter reading-out system by this indications.
The system of selection of the power line communication frequency range of the present embodiment, as shown in Figure 1, comprising:
Step 101, uses the first frequency range to send the first message to dynamometer instrument.
First, concentrator is selected the first frequency range and is sent the first message by the first channel to dynamometer instrument in power line communication frequency range.
Further, use the first frequency range to send the first message to dynamometer instrument, comprising: in first time period, use the first frequency range, send the first message to dynamometer instrument according to the time interval of presetting.
As a kind of embodiment of the present invention.Setting 2MHz ~ 12MHz is the frequency range that power line can carry out communicating, and wherein there is very noisy interference in 2MHz ~ 6MHz frequency range.The frequency range of power line is on average divided into five frequency ranges by concentrator, wherein, first frequency range is 2MHz ~ 4MHz, second frequency range is 4MHz ~ 6MHz, 3rd frequency range is 6MHz ~ 8MHz, and the 4th frequency range is 8MHz ~ 10MHz, and the 5th frequency range is 10MHz ~ 12MHz, the very first time is 1 minute, and the time interval of presetting was 10 seconds.Therefore, first concentrator uses the first frequency range 2MHz ~ 4MHz to send the first message to dynamometer instrument every 10 seconds in 1 minutes.
Above-mentioned execution mode is only for the ease of understanding, and in fact, knowing those skilled in the art can clearly know, the division of frequency range, the first message, the very first time and the time interval all can pre-set.
Further, before use first frequency range sends the first message to dynamometer instrument, the method for the present embodiment also comprises:
Judge whether presently used frequency range is working frequency range.
Before concentrator is selected power line communication frequency range, first concentrator judges whether the frequency range of current use is working frequency range.The criterion of " working frequency range " can pre-set, for example, assuming that the quantity of dynamometer instrument is 100, " working frequency range " be defined as can percentage >=90% of dynamometer instrument of reported data time power line communication frequency range.If use the frequency range of current use, the dynamometer instrument of more than 10% can not reported data, then illustrate that this frequency range is inoperative frequency range, need this frequency range of adjustment in time, to enable the dynamometer instrument reported data in preset range.
Step 102, receives the frequency range feedback information from dynamometer instrument, and whether frequency range feedback information is used to indicate described dynamometer instrument can normally receive the first message.
After within the very first time, the first message sends, dynamometer instrument receives the first message and analyzes.If the first message amount that dynamometer instrument can be resolved within the very first time is 0, then communications band existing problems are described, dynamometer instrument cannot normally receive the first message, therefore dynamometer instrument state is set to off-line; If the first message amount that dynamometer instrument can be resolved within the very first time is not 0, then, when this communications band of use is described, dynamometer instrument can normally receive the first message, therefore dynamometer instrument state is set to online.Then, frequency range feedback information feeds back by dynamometer instrument.Wherein, frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.Dynamometer instrument indications is unique sign of dynamometer instrument, can be used for determining the position of dynamometer instrument in kilowatt meter reading-out system; Dynamometer instrument status data represents dynamometer instrument state, can determine that dynamometer instrument is in off-line state to be also in line states by dynamometer instrument status data.
Corresponding above-mentioned embodiment, because there is very noisy interference in 2MHz ~ 6MHz frequency range, when first frequency range is 2MHz ~ 4MHz, first message can be subject to the interference of noise source, dynamometer instrument normally cannot resolve the first message in the very first time, therefore the number parsing the first message is 0, so dynamometer instrument state is set to off-line.Then, the frequency range feedback information comprising information off-line feeds back by dynamometer instrument.
In addition, it should be noted that, above-mentioned execution mode is only dynamometer instrument of the present invention can the determination methods of proper communication, and the present invention also can adopt other determination methods, does not limit at this.
According to frequency range feedback information, step 103, judges that can dynamometer instrument normally receive the first message by the first frequency range.
Concentrator judges according to frequency range feedback information, in the frequency range feedback information received, when there being a minimum dynamometer instrument to be in off-line state, just illustrates that dynamometer instrument cannot normally receive the first message by the communications band chosen.
Corresponding above-mentioned embodiment, contain the information of dynamometer instrument off-line when the first frequency range is the frequency range of 2MHz ~ 4MHz in feedback information, therefore concentrator judges that dynamometer instrument cannot normally receive the first message by the first frequency range 2MHz ~ 4MHz.
Step 104, other default frequency ranges are used to send the first message to dynamometer instrument, until obtain so that dynamometer instrument normally receives the proper communication frequency range proper communication frequency range of the first message.
After judgement first frequency range cannot normally receive the first message, frequency range is changed to the second frequency range and the second frequency range after change resends the first message by concentrator, until when all dynamometer instruments are all in line states, when the communications band using and choose is described, dynamometer instrument can carry out normally receiving the first message.
Corresponding above-mentioned embodiment, when judging use first frequency range 2MHz ~ 4MHz, after dynamometer instrument cannot normally receive the first message, communications band is altered to the second frequency range 4MHz ~ 6MHz by concentrator, then resends the first message.As a same reason, in 2MHz ~ 6MHz frequency range, there is very noisy interference, the first message can be subject to the interference of noise source, and then causes at least one dynamometer instrument off-line.Therefore concentrator judges that the second frequency range cannot normally receive the first message, and frequency range is altered to the 3rd frequency range, and the 3rd frequency range is 6MHz ~ 8MHz, continues transmission first message.Because do not have the impact of interference signal in the 3rd frequency range, dynamometer instrument can parse the first message within the very first time, and therefore concentrator judges that the 3rd frequency range can normally receive the first message.It is can the frequency range of proper communication that the 3rd frequency range is selected in the system of selection of final power line communication frequency range, and the selection course of communications band completes.
In addition, it should be noted that, above-mentioned execution mode is only the method that a kind of frequency range of the present invention is changed, and the present invention also can adopt other frequency range replacing options.For example, after judgement first frequency range 2MHz ~ 4MHz cannot normally receive the first message, it is 6MHz ~ 8MHz (replacing of odd number frequency range) that communications band can be altered to the 3rd frequency range by concentrator, the like.
Further, after judging that according to frequency range feedback information dynamometer instrument normally receives the first message by the first frequency range, the method for the present embodiment also comprises:
Step 105, the first frequency range is used to communicate with dynamometer instrument.
When concentrator uses after the first frequency range sends the first message, dynamometer instrument receives the first message and analyzes.If the first message amount that dynamometer instrument can be resolved within the very first time is not 0, illustrates that dynamometer instrument normally receives the first message by the first frequency range, therefore dynamometer instrument state is set to online, and dynamometer instrument frequency range feedback information is fed back.Concentrator judges according to frequency range feedback information, in the frequency range feedback information received, when all dynamometer instruments are all in line states, illustrates that dynamometer instrument normally receives the first message by the first frequency range, and namely choosing the first frequency range is communications band.
The system of selection of the power line communication frequency range of the present embodiment, by sending the first message, then the frequency range feedback information from dynamometer instrument is received, judge that can frequency range normally work according to frequency range feedback information, can power line communication frequency range cannot proper communication time, the communications band that automatic selection is suitable, reduces noise to the impact of signal of communication, improves the success rate of checking meter.
Further, after acquisition proper communication frequency range, also comprise: use proper communication frequency range to gather the electric power data information of dynamometer instrument.When gathering the electric power data information of dynamometer instrument, first concentrator utilizes proper communication frequency range to send electricity meter-reading instruction, then the electric power data information of feedback is received, electric power data information comprises dynamometer instrument indications and dynamometer instrument electric power data, then concentrator uploads onto the server in the electric power data information set received and after collecting, and resolves further and process this electric power data information to make server.Electric power data information uploads onto the server by following at least one mode: dial up on the telephone, broadband access network, wireless Internet access, Email, the information of mobile terminal and audio call.
The system of selection of the power line communication frequency range of the present embodiment, by sending the first message, then the frequency range feedback information from dynamometer instrument is received, judge that can frequency range normally work according to frequency range feedback information, can power line communication frequency range cannot proper communication time, automatically select suitable communications band, the proper communication frequency range selected then can be utilized to carry out the collecting work of electric power data, reduce noise to the impact of the work of checking meter, improve the success rate of checking meter.
The present embodiment additionally provides a kind of concentrator, as shown in Figure 2, comprising: sending module 11, receiver module 12 and processor 13, wherein:
Sending module 11, sends the first message to dynamometer instrument for using the first frequency range;
Receiver module 12, for receiving the frequency range feedback information from dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message;
Processor 13, for after judging that according to frequency range feedback information dynamometer instrument does not normally receive the first message by the first frequency range, other default frequency ranges are used to send the first message to dynamometer instrument, until obtain so that dynamometer instrument normally receives the proper communication frequency range of the first message.
Further, processor 13 also for, after judging that according to frequency range feedback information dynamometer instrument normally receives the first message by the first frequency range, use the first frequency range to communicate with dynamometer instrument.
Further, concentrator also comprises: acquisition module 14, for the electric power data information using proper communication frequency range to gather dynamometer instrument.
Further, sending module 12 specifically for: in first time period, use the first frequency range, according to preset the time interval send the first message to dynamometer instrument;
Frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.Wherein, the time interval of the very first time and transmission all can be arranged.Dynamometer instrument indications is unique sign of dynamometer instrument, can be used for determining the position of dynamometer instrument in kilowatt meter reading-out system; Dynamometer instrument status data represents dynamometer instrument state, can determine that dynamometer instrument is in off-line state to be also in line states by dynamometer instrument status data.
Operation principle and the embodiment one of the concentrator each several part of the present embodiment are similar, do not repeat them here.
The concentrator of the present embodiment, be provided with sending module, receiver module, processor and acquisition module, the first message is sent to dynamometer instrument by sending module, receiver module receives from the frequency range feedback information of dynamometer instrument, and processor judges frequency range feedback information, power line communication frequency range cannot proper communication time, the communications band that automatic selection is suitable, acquisition module uses proper communication frequency range to gather the electric power data information of dynamometer instrument, reduces noise to the impact of signal of communication, improves the success rate of checking meter.
Present embodiments provide a kind of power line kilowatt meter reading-out system, as shown in Figure 3, this power line kilowatt meter reading-out system comprises: concentrator 1, at least one dynamometer instrument 2, concentrator 1 is connected by power line with dynamometer instrument 2.
Concentrator 1, for using the first frequency range to send the first message to dynamometer instrument 2,
Receive the frequency range feedback information from dynamometer instrument 2, whether frequency range feedback information is used to indicate dynamometer instrument 2 can normally receive the first message, and, after judging that according to frequency range feedback information dynamometer instrument 2 does not normally receive the first message by the first frequency range, other default frequency ranges are used to send the first message to dynamometer instrument 2, until obtain so that dynamometer instrument 2 normally receives the proper communication frequency range of the first message.
Dynamometer instrument 2, for receiving the first message from concentrator 1, and is judging to send frequency range feedback information to concentrator 1 after whether the first message can normally receive.
Further, concentrator 1, after judging that according to frequency range feedback information dynamometer instrument 2 normally receives the first message by the first frequency range, uses the first frequency range to communicate with dynamometer instrument 2.
Further, the electric power data information of concentrator 1 also for using proper communication frequency range to gather dynamometer instrument 2.
Further, concentrator 1 uses the first frequency range to send the first message to dynamometer instrument 2, comprising: concentrator 1 uses the first frequency range in first time period, sends the first message to dynamometer instrument 2 according to the time interval of presetting.
Frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.Wherein, the time interval of the very first time and transmission all can be arranged.Dynamometer instrument indications is unique sign of dynamometer instrument, can be used for determining the position of dynamometer instrument in kilowatt meter reading-out system; Dynamometer instrument status data represents dynamometer instrument state, can determine that dynamometer instrument is in off-line state to be also in line states by dynamometer instrument status data.
Operation principle and the embodiment one of the kilowatt meter reading-out system of the present embodiment are similar, do not repeat them here.
The power line kilowatt meter reading-out system of the present embodiment, comprise: concentrator, at least one dynamometer instrument, concentrator is connected by power line with dynamometer instrument, the first message is sent to dynamometer instrument by concentrator, then the frequency range feedback information from dynamometer instrument is received, judge that communications band could normally use according to frequency range feedback information, power line communication frequency range cannot proper communication time, the communications band that automatic selection is suitable, and proper communication frequency range can be used to gather the electric power data information of dynamometer instrument, reduce noise to the impact of signal of communication, improve the success rate of checking meter.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (16)
1. a system of selection for power line communication frequency range, is characterized in that, comprising:
The first frequency range is used to send the first message to dynamometer instrument;
Receive the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message;
After judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message, wherein, described first frequency range and other default frequency ranges described are respectively the band frequency in power line communication frequency range.
2. the system of selection of power line communication frequency range according to claim 1, is characterized in that, also comprise:
After judging that according to described frequency range feedback information described dynamometer instrument normally receives described first message by described first frequency range, described first frequency range is used to communicate with described dynamometer instrument.
3. the system of selection of power line communication frequency range according to claim 1 and 2, is characterized in that, described use first frequency range sends the first message to dynamometer instrument, comprising:
In first time period, use the first frequency range, send the first message to described dynamometer instrument according to the time interval of presetting.
4. the system of selection of power line communication frequency range according to claim 1 and 2, is characterized in that, after the described proper communication frequency range of acquisition, also comprises:
Described proper communication frequency range is used to gather the electric power data information of described dynamometer instrument.
5. the system of selection of power line communication frequency range according to claim 1 and 2, is characterized in that, described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.
6. the system of selection of power line communication frequency range according to claim 1 and 2, is characterized in that, before use first frequency range sends the first message to dynamometer instrument, also comprises:
Judge whether presently used frequency range is working frequency range.
7. a concentrator, is characterized in that, comprising:
Sending module, sends the first message to dynamometer instrument for using the first frequency range;
Receiver module, for receiving the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message;
Processor, for after judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message, wherein, described first frequency range and other default frequency ranges described are respectively the band frequency in power line communication frequency range.
8. concentrator according to claim 7, it is characterized in that, described processor also for: after judging that according to described frequency range feedback information described dynamometer instrument normally receives described first message by described first frequency range, use described first frequency range to communicate with described dynamometer instrument.
9. the concentrator according to claim 7 or 8, is characterized in that, described sending module specifically for:
In first time period, use the first frequency range, send the first message to described dynamometer instrument according to the time interval of presetting.
10. concentrator according to claim 7, is characterized in that, also comprises:
Acquisition module, for the electric power data information using described proper communication frequency range to gather described dynamometer instrument.
11. concentrators according to claim 7 or 8, it is characterized in that, described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.
12. 1 kinds of power line kilowatt meter reading-out systems, comprising: concentrator and at least one dynamometer instrument, and described concentrator is connected by power line with described dynamometer instrument, it is characterized in that,
Described concentrator is used for, and uses the first frequency range to send the first message to dynamometer instrument,
Receive the frequency range feedback information from described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument normally can receive described first message, and,
After judging that according to described frequency range feedback information described dynamometer instrument does not normally receive described first message by described first frequency range, other default frequency ranges are used to send described first message to described dynamometer instrument, until obtain so that described dynamometer instrument normally receives the proper communication frequency range of described first message, wherein, described first frequency range and other default frequency ranges described are respectively the band frequency in power line communication frequency range;
Described dynamometer instrument is used for, and receives described first message from described concentrator, and is judging to send described frequency range feedback information after whether described first message can normally receive to described concentrator.
13. a kind of power line kilowatt meter reading-out systems according to claim 12, is characterized in that, described concentrator also for:
After judging that according to described frequency range feedback information described dynamometer instrument normally receives described first message by described first frequency range, described first frequency range is used to communicate with described dynamometer instrument.
14. a kind of power line kilowatt meter reading-out systems according to claim 12 or 13, is characterized in that, described concentrator specifically for:
In first time period, use the first frequency range, send the first message to described dynamometer instrument according to the time interval of presetting.
15. power line kilowatt meter reading-out systems according to claim 12 or 13, is characterized in that, concentrator also for: use described proper communication frequency range to gather the electric power data information of described dynamometer instrument.
16. power line kilowatt meter reading-out systems according to claim 12 or 13, it is characterized in that, described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.
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| CN201210401053.5A CN102932035B (en) | 2012-10-19 | 2012-10-19 | Power line communication frequency band selection method, concentrator and power line meter reading system |
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| CN201210401053.5A CN102932035B (en) | 2012-10-19 | 2012-10-19 | Power line communication frequency band selection method, concentrator and power line meter reading system |
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| CN103220756A (en) * | 2013-04-18 | 2013-07-24 | 国家电网公司 | Connection method of monitoring system and wireless local area network in electric power engineering |
| CN106297226A (en) * | 2015-05-27 | 2017-01-04 | 浙江瑞瀛物联科技有限公司 | A kind of ammeter wireless meter reading method of band IHD equipment |
| CN105118280A (en) * | 2015-08-25 | 2015-12-02 | 国网北京市电力公司 | Method, device and system for reporting data |
| CN108880619A (en) * | 2018-07-26 | 2018-11-23 | 航天亮丽电气有限责任公司 | A kind of automatic meter reading method using bandwidth carrier communication module |
| CN110769487B (en) * | 2018-07-27 | 2020-09-08 | 珠海格力电器股份有限公司 | Method for accessing terminal equipment, manager and power peak regulation system |
| CN111601414A (en) * | 2020-04-22 | 2020-08-28 | 上海亚明照明有限公司 | PLC intelligent lamp control method, PLC gateway, PLC lamp and system |
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