CN102932035A - 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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- CN102932035A CN102932035A CN2012104010535A CN201210401053A CN102932035A CN 102932035 A CN102932035 A CN 102932035A CN 2012104010535 A CN2012104010535 A CN 2012104010535A CN 201210401053 A CN201210401053 A CN 201210401053A CN 102932035 A CN102932035 A CN 102932035A
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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, relate in particular to a kind of system of selection, concentrator and power line kilowatt meter reading-out system of power line communication frequency range.
Background technology
In the prior art, often all be to take manual type in the electricity meter-reading work.Along with the expansion of electric power system, especially Every household has an ammeter, direct-furnish is goed deep into to the measures such as family, and the workload of electricity meter-reading sharply increases, and only rely on manual work to be difficult to finish rapidly this work, and cost of labor is larger.Therefore, automated communications are checked meter becomes the inexorable trend of following electricity meter-reading development.A kind of as the automated communications reading technique uses power line to become the technology that Utilities Electric Co. pays close attention to as the power line communication of the data transmission channels such as audio frequency, video, control signal.
The power line kilowatt meter reading-out system relies on existing power line, utilizes power line to need not to carry out again lapping construction as the communication network passage.The power line kilowatt meter reading-out system generally comprises user terminal, data acquisition equipment, distribution transforming concentrating equipment, server host.Usually, comprise several user terminals in a community unit, data acquisition equipment is responsible for the electric power data acquisition work to user terminal, and the distribution transforming concentrating equipment is collected each data cell, and server host carries out final statistical work.
For the power line kilowatt meter reading-out system, the technical staff need to utilize power line that each equipment in the system is carried out transfer of data work and communication is controlled.The inventor finds that in R﹠D process there is following defective at least in prior art: in electric line communication system, when if the power line fixed frequency range is subject to noise jamming or situation that other affects proper communication occurs, receiving device can't be correct the 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, concentrator and power line kilowatt meter reading-out system of power line communication frequency range, can be when the power line communication frequency range can't proper communication, automatically select suitable communications band, noise reduction improves the success rate of checking meter to the impact of signal of communication.
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:
Use the first frequency range to send the first message to dynamometer instrument;
Reception is from the frequency range feedback information of described dynamometer instrument, and whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message;
Judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument.
Judging that according to described frequency range feedback information described dynamometer instrument can by described the first frequency range behind described the first message of normal reception, use described the first frequency range and described dynamometer instrument to communicate.
Described use the first frequency range sends the first message to dynamometer instrument, comprising: use the first frequency range in very first time section, send the first message to described dynamometer instrument according to the default time interval.
After obtaining described proper communication frequency range, 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, is used for position and the residing state information of dynamometer instrument of expression dynamometer instrument.
Using described the first frequency range to send described the first message to the described dynamometer instrument, also comprise: judge whether presently used frequency range is working frequency range.
A kind of concentrator comprises:
Sending module is used for using the first frequency range to send the first message to dynamometer instrument; Receiver module is used for receiving the frequency range feedback information from described dynamometer instrument, and whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message; Processor, be used for judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument.
Described processor also is used for: judging that according to described frequency range feedback information described dynamometer instrument can by described the first frequency range behind described the first message of normal reception, use described the first frequency range and described dynamometer instrument to communicate.
Described sending module specifically is used for: use the first frequency range in very first time section, send the first message to described dynamometer instrument according to the default time interval.
Described concentrator also comprises: acquisition module is used for using 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, is used for indicating position and the residing state information of dynamometer instrument of dynamometer instrument.
A kind of power line kilowatt meter reading-out system comprises:
Concentrator and at least one dynamometer instrument, described concentrator is connected by power line with described dynamometer instrument.Described concentrator is used for, use the first frequency range to send the first message to dynamometer instrument, reception is from the frequency range feedback information of described dynamometer instrument, whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message, and, judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument; Described dynamometer instrument is used for, and receives described the first message from described concentrator, and is judging to send described frequency range feedback information to described concentrator after whether described the first message can normally receive.
Described concentrator also is used for: after judging that according to described frequency range feedback information described dynamometer instrument can receive described the first message by described the first frequency range is normal, use described the first frequency range and described dynamometer instrument to communicate.
Described concentrator specifically is used for: use the first frequency range in very first time section, send the first message to described dynamometer instrument according to the default time interval.
Described concentrator also is used 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, is used for indicating position and the residing state information of dynamometer instrument of dynamometer instrument.
The system of selection of the power line communication frequency range of the embodiment of the invention, concentrator and power line kilowatt meter reading-out system, by using the first frequency range to send the first message to dynamometer instrument, reception is from the frequency range feedback information of dynamometer instrument, after judging that according to the frequency range feedback information the first frequency range is not the proper communication frequency range, continue to use the second frequency range to send the first message to dynamometer instrument, until obtain the proper communication frequency range, can be in power line channel communications band can't proper communication the time, automatically select suitable communications band, noise reduction improves the success rate of checking meter to the impact of signal of communication.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of power line communication Frequency Band Selection method in the embodiment of the invention;
Fig. 2 is the structural representation of concentrator in the embodiment of the invention;
Fig. 3 is the structural representation of power line kilowatt meter reading-out system in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of system of selection, concentrator and power line kilowatt meter reading-out system of power line communication frequency range, can be when the power line communication frequency range can't proper communication, automatically select suitable communications band, noise reduction improves the success rate of checking meter to the impact of signal of communication.
Below in conjunction with following accompanying drawing the embodiment of the invention is described in detail.
The present embodiment is realized collection to the electric power data information of each dynamometer instrument by the power line kilowatt meter reading-out system.The power line kilowatt meter reading-out system comprises from hardware view: concentrator and at least one dynamometer instrument, concentrator and described dynamometer instrument are connected by power line, and carry out concentrator and the mutual communication of dynamometer instrument by power line.Each dynamometer instrument has unique discernible indications in the power line kilowatt meter reading-out system, can the position of unique definite 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:
At first, concentrator is selected the first frequency range and is sent the first message by the first channel to dynamometer instrument in the power line communication frequency range.
Further, use the first frequency range to send the first message to dynamometer instrument, comprising: in very first time section, use the first frequency range, send the first message to dynamometer instrument according to the default time interval.
As a kind of embodiment of the present invention.Setting 2MHz～12MHz is the frequency range that power line can communicate, and wherein exists very noisy to disturb in 2MHz～6MHz frequency range.Concentrator on average is divided into five frequency ranges with the frequency range of power line, wherein, the first frequency range is 2MHz～4MHz, the second frequency range is 4MHz～6MHz, the 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 default time interval was 10 seconds.Therefore, concentrator at first uses first frequency range 2MHz～4MHz to send the first message to dynamometer instrument every 10 seconds in 1 minutes.
Above-mentioned execution mode only for the ease of understanding, in fact, is known those skilled in the art and can clearly be known, the division of frequency range, the first message, the very first time and time interval all can set in advance.
Further, using the first frequency range to send the first message to the dynamometer instrument, the method for the present embodiment also comprises:
Judge whether presently used frequency range is working frequency range.
Before concentrator was selected the power line communication frequency range, the frequency range that concentrator is at first judged current use is working frequency range whether.The criterion of " working frequency range " can set in advance, and for instance, the quantity of supposing dynamometer instrument is 100, " working frequency range " but power line communication frequency range when being defined as the percentage of the dynamometer instrument of reported data 〉=90%.If use the frequency range of current use, the dynamometer instrument more than 10% can not reported data, illustrates that then this frequency range is the inoperative frequency range, needs in time to adjust this frequency range, so that the dynamometer instrument in the preset range can reported data.
After the first message sent within the very first time, dynamometer instrument received the first message and analyzes.If the first message amount that dynamometer instrument can be resolved within the very first time is 0, the communications band existing problems then are described, dynamometer instrument can't normally receive the first message, and therefore the 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, when then this communications band was used in explanation, dynamometer instrument can normally receive the first message, and therefore the dynamometer instrument state is set to online.Then, dynamometer instrument feeds back the frequency range feedback information.Wherein, the frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.The 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; The dynamometer instrument status data represents the dynamometer instrument state, can determine that by the dynamometer instrument status data dynamometer instrument is to be in off-line state also to be in line states.
Corresponding above-mentioned embodiment, because exist very noisy to disturb in 2MHz～6MHz frequency range, when the first frequency range is 2MHz～4MHz, the first message can be subject to the interference of noise source, dynamometer instrument can't normally be resolved the first message in the very first time, therefore the number that parses the first message is 0, so the dynamometer instrument state is set to off-line.Then, the dynamometer instrument frequency range feedback information that will comprise information off-line feeds back.
In addition, need to prove, above-mentioned execution mode only is the determination methods that dynamometer instrument of the present invention can proper communication, and the present invention also can adopt other determination methods, does not do restriction at this.
Concentrator is judged according to the frequency range feedback information, in the frequency range feedback information that receives, when having a minimum dynamometer instrument to be in off-line state, just illustrates that dynamometer instrument can't be by the normal reception of communications band the first message of choosing.
The information that has comprised the dynamometer instrument off-line when corresponding above-mentioned embodiment, the first frequency range are the frequency range of 2MHz～4MHz in the feedback information, so concentrator judges that dynamometer instrument can't normally receive the first message by first frequency range 2MHz～4MHz.
After judging that the first frequency range can't normally receive the first message, concentrator changes to frequency range the second frequency range and resends the first message in after changing the second frequency range, until when all dynamometer instruments all are in line states, illustrate that dynamometer instrument can normally receive the first message when using the communications band of choosing.
Corresponding above-mentioned embodiment is used first frequency range 2MHz～4MHz when judging, after dynamometer instrument can't normally receive the first message, concentrator was altered to second frequency range 4MHz～6MHz with communications band, then resends the first message.As a same reason, exist very noisy to disturb in 2MHz～6MHz frequency range, 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 can't normally receive the first message, and frequency range is altered to the 3rd frequency range, and the 3rd frequency range is 6MHz～8MHz, continues to send the first message.Because there is not the impact of interference signal in the 3rd frequency range, dynamometer instrument can parse the first message within the very first time, so concentrator judges that the 3rd frequency range can normally receive the first message.The system of selection of final power line communication frequency range is selected the 3rd frequency range and is frequency range that can proper communication, and the selection course of communications band is finished.
In addition, need to prove, above-mentioned execution mode only is 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 methods.For instance, after judging that first frequency range 2MHz～4MHz can't normally receive the first message, it is 6MHz～8MHz (replacing of odd number frequency range) that concentrator can be altered to communications band the 3rd frequency range, the like.
Further, after judging that according to the frequency range feedback information dynamometer instrument can normally receive the first message by the first frequency range, the method for the present embodiment also comprises:
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, illustrate that dynamometer instrument can be by normal first message that receives of the first frequency range, therefore the dynamometer instrument state is set to online, and dynamometer instrument frequency range feedback information is fed back.Concentrator is judged according to the frequency range feedback information, in the frequency range feedback information that receives, when all dynamometer instruments all are in line states, illustrates that dynamometer instrument can be by normal first message that receives of 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 receive the frequency range feedback information from dynamometer instrument, judge that according to the frequency range feedback information can frequency range work, can be when the power line communication frequency range can't proper communication, automatically select suitable communications band, noise reduction improves the success rate of checking meter to the impact of signal of communication.
Further, after obtaining the proper communication frequency range, also comprise: use the proper communication frequency range to gather the electric power data information of dynamometer instrument.When gathering the electric power data information of dynamometer instrument, at first concentrator utilizes the proper communication frequency range to send the electricity meter-reading instruction, then receive the electric power data information of feedback, electric power data information comprises dynamometer instrument indications and dynamometer instrument electric power data, then concentrator is with uploading onto the server in the electric power data information set that receives and after collecting, so that this electric power data information is further resolved and processed to server.Electric power data information uploads onto the server can be by following at least a mode: dial up on the telephone, information and the audio call of broadband access network, wireless Internet access, Email, portable terminal.
The system of selection of the power line communication frequency range of the present embodiment, by sending the first message, then receive the frequency range feedback information from dynamometer instrument, judge that according to the frequency range feedback information can frequency range work, can when the power line communication frequency range can't proper communication, automatically select suitable communications band, then can utilize the proper communication frequency range that selects to carry out the collecting work of electric power data, noise reduction improves the success rate of checking meter to the impact of the work of checking meter.
The present embodiment also provides a kind of concentrator, as shown in Figure 2, comprising: sending module 11, receiver module 12 and processor 13, wherein:
Sending module 11 is used for using the first frequency range to send the first message to dynamometer instrument;
Further, processor 13 also is used for, and after judging that according to the frequency range feedback information dynamometer instrument can normally receive the first message by the first frequency range, uses the first frequency range and dynamometer instrument to communicate.
Further, concentrator also comprises: acquisition module 14 is used for using the proper communication frequency range to gather the electric power data information of dynamometer instrument.
Further, sending module 12 specifically is used for: use the first frequency range in very first time section, send the first message to dynamometer instrument according to the default time interval;
The 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 arrange.The 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; The dynamometer instrument status data represents the dynamometer instrument state, can determine that by the dynamometer instrument status data dynamometer instrument is to be in off-line state also to be in line states.
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, send the first message to dynamometer instrument by sending module, receiver module receives the frequency range feedback information from dynamometer instrument, and processor is judged the frequency range feedback information, when the power line communication frequency range can't proper communication, automatically select suitable communications band, acquisition module uses the proper communication frequency range to gather the electric power data information of dynamometer instrument, and noise reduction improves the success rate of checking meter to the impact of signal of communication.
The present embodiment provides a kind of power line kilowatt meter reading-out system, and as shown in Figure 3, this power line kilowatt meter reading-out system comprises: concentrator 1, at least one dynamometer instrument 2, concentrator 1 and dynamometer instrument 2 are connected by power line.
Concentrator 1 is used for using the first frequency range to send the first message to dynamometer instrument 2,
Reception is from the frequency range feedback information of dynamometer instrument 2, whether the frequency range feedback information is used to indicate dynamometer instrument 2 can normally receive the first message, and, after judging that according to the frequency range feedback information dynamometer instrument 2 can not normally receive the first message by the first frequency range, use other default frequency ranges to send the first message to dynamometer instrument 2, until obtain energy so that the dynamometer instrument 2 normal proper communication frequency ranges that receive the first messages.
Dynamometer instrument 2 is used for receiving the first message from concentrator 1, and is judging to send the frequency range feedback information to concentrator 1 after whether the first message can normally receive.
Further, concentrator 1 uses the first frequency range and dynamometer instrument 2 to communicate after judging that according to the frequency range feedback information dynamometer instrument 2 can normally receive the first message by the first frequency range.
Further, concentrator 1 also is used for using the proper communication frequency range to gather the electric power data information of dynamometer instrument 2.
Further, concentrator 1 uses the first frequency range to send the first message to dynamometer instrument 2, and comprising: concentrator 1 uses the first frequency range in very first time section, sends the first message to dynamometer instrument 2 according to the time interval of presetting.
The 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 arrange.The 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; The dynamometer instrument status data represents the dynamometer instrument state, can determine that by the dynamometer instrument status data dynamometer instrument is to be in off-line state also to be in line states.
The operation principle of the kilowatt meter reading-out system of the present embodiment and embodiment one 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, send the first message to dynamometer instrument by concentrator, then receive the frequency range feedback information from dynamometer instrument, judge that according to the frequency range feedback information communications band could normally use, when the power line communication frequency range can't proper communication, automatically select suitable communications band, and can use the proper communication frequency range to gather the electric power data information of dynamometer instrument, noise reduction improves the success rate of checking meter to the impact of signal of communication.
The those skilled in the art can be well understood to, be the convenience described and succinct, only the division with above-mentioned each functional module is illustrated, in the practical application, can as required the above-mentioned functions distribution be finished by different functional modules, the internal structure that is about to device is divided into different functional modules, to finish all or part of function described above.The system of foregoing description, the specific works process of device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that, disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described module or unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics of unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, part or all or part of of this technical scheme that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) or processor (processor) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (16)
1. the system of selection of a power line communication frequency range is characterized in that, comprising:
Use the first frequency range to send the first message to dynamometer instrument;
Reception is from the frequency range feedback information of described dynamometer instrument, and whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message;
Judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument.
2. the system of selection of power line communication frequency range according to claim 1 is characterized in that, also comprises:
Judging that according to described frequency range feedback information described dynamometer instrument can by described the first frequency range behind described the first message of normal reception, use described the first frequency range and described dynamometer instrument to communicate.
3. the system of selection of power line communication frequency range according to claim 1 and 2 is characterized in that, described use the first frequency range sends the first message to dynamometer instrument, comprising:
In very first time section, use the first frequency range, send the first message to described dynamometer instrument according to the default time interval.
4. the system of selection of power line communication frequency range according to claim 1 and 2 is characterized in that, after obtaining described proper communication frequency range, also comprises:
Use described proper communication frequency range 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, is using the first frequency range to send the first message to the dynamometer instrument, also comprises:
Judge whether presently used frequency range is working frequency range.
7. a concentrator is characterized in that, comprising:
Sending module is used for using the first frequency range to send the first message to dynamometer instrument;
Receiver module is used for receiving the frequency range feedback information from described dynamometer instrument, and whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message;
Processor, be used for judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument.
8. concentrator according to claim 7, it is characterized in that, described processor also is used for: judging that according to described frequency range feedback information described dynamometer instrument can by described the first frequency range behind described the first message of normal reception, use described the first frequency range and described dynamometer instrument to communicate.
9. according to claim 7 or 8 described concentrators, it is characterized in that, described sending module specifically is used for:
In very first time section, use the first frequency range, send the first message to described dynamometer instrument according to the default time interval.
10. concentrator according to claim 7 is characterized in that, also comprises:
Acquisition module is used for using described proper communication frequency range to gather the electric power data information of described dynamometer instrument.
11. according to claim 7 or 8 described concentrators, it is characterized in that, described frequency range feedback information comprises dynamometer instrument indications and dynamometer instrument status data.
12. a power line kilowatt meter reading-out system comprises: concentrator and at least one dynamometer instrument, 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,
Reception is from the frequency range feedback information of described dynamometer instrument, and whether described frequency range feedback information is used to indicate described dynamometer instrument can normally receive described the first message, and,
Judging that according to described frequency range feedback information described dynamometer instrument can not be by described the first frequency range behind described the first message of normal reception, use other default frequency ranges to send described the first message to described dynamometer instrument, until obtain energy so that the normal proper communication frequency range that receives described the first message of described dynamometer instrument;
Described dynamometer instrument is used for, and receives described the first message from described concentrator, and is judging to send described frequency range feedback information to described concentrator after whether described the first message can normally receive.
13. a kind of power line kilowatt meter reading-out system according to claim 12 is characterized in that, described concentrator also is used for:
Judging that according to described frequency range feedback information described dynamometer instrument can by described the first frequency range behind described the first message of normal reception, use described the first frequency range and described dynamometer instrument to communicate.
14. according to claim 12 or 13 described a kind of power line kilowatt meter reading-out systems, it is characterized in that, described concentrator specifically is used for:
In very first time section, use the first frequency range, send the first message to described dynamometer instrument according to the default time interval.
15. according to claim 12 or 13 described power line kilowatt meter reading-out systems, it is characterized in that, concentrator also is used for: use described proper communication frequency range to gather the electric power data information of described dynamometer instrument.
16. according to claim 12 or 13 described power line kilowatt meter reading-out systems, 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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