CN1414344A - Interact relaying method used for radio meter data recording system - Google Patents
Interact relaying method used for radio meter data recording system Download PDFInfo
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Abstract
The invention is applied to an automatic wireless meter reading system composed of a central station, a concentrator and terminals. First, the communication route table from the concentrator to all terminals is edited manually. Then, the route table is sent to concentrator through the central station by using the wired or wireless mode. The concentrator sends the test frame to all terminals one by one according to the stored route table in order to validate whether the route table edited manually is reliable. The route table is modified for the fault terminals, which can not make the reliable communication with the concentrator till the route table for all terminals is built. The invention realizes the automatic wireless communication between the concentrator and the terminals, and reduces the hand labor greatly as well as lowers the managing cost.
Description
Technical field: the invention belongs to electronic technology field, relate to the method that a kind of wireless kilowatt meter reading-out system is set up the communication route.
Background technology: the automatic meter number recorder that has occurred at present is automanual, in certain sub-district or certain panel region, the ammeter of each resident family or water meter, gas meter all are transformed into the mode that can export pulse, with the ammeter is example, each ammeter is marked with a pulse constant, and on behalf of dial plate, the pulse constant change how many circles is kilowatt-hour.Suppose that 720 is pulse constants, just represent the ammeter dial plate changeed 720 the circle after, literary name be the electric degree number can increase by 1 the degree.The effect of photoelectric probe is exactly that the mechanical revolution of dial plate is converted to the electric pulse number, and just the ammeter dial plate whenever turns around and will make photoelectric probe produce an electric pulse, and this pulse will send acquisition terminal to by transmission line.Each acquisition terminal can connect 16 table meters at present, promptly is connected with 16 table meters with 16 transmission lines at most.Acquisition terminal has CPU and storer.Acquisition terminal can be gathered the pulse of 16 table meters simultaneously.Terminal can be converted to the electric degree number with pulse data according to the pulse constant.As being that the umber of pulse accumulative total that certain piece table meter transmits has reached 720 from certain root transmission line.The numeral of certain storage unit just adds 1 in the storer of terminal so.This numeral with ammeter on numeral be consistent.These data can preserved more than 10 years after the terminal power down.But the data that terminal collects collection from each table also will be transferred to a central computer and store and handle, and how to solve the transmission of data from the terminal to the central computer, and two kinds of schemes are arranged at present, and a kind of is artificial process, and a kind of is wireless automated communications method.Artificial process is by artificial hand-held data collector, arrives each terminal seat reading of data one by one, arrives the center calculation machine room then, data input computing machine.This method exhausts the people and drains the treasury.Wireless automated communications method is to set up a wireless communication system between central computer and all terminals, realizes the automatic transmission of data by wireless mode.Fig. 1 has shown the basic scheme of the wireless kilowatt meter reading-out system of Luoyang Zhuo Fei technological development company limited independent development, and the model of concentrator is 3YD-DCU in the system, has applied for patent, and application number is 01229317.2; The model of meter reading terminal is RMRS-2 in the system, and number of patent application is 01229319.9, no longer terminal and concentrator is described in detail herein.Owing to be subjected to the Wireless Management Committee predetermined restricted, the power of the wireless module of acquisition terminal is less.Promptly the ultimate range of two wireless module mutual communication only is about 100 meters.Far just can not receive mutually again.To be sent to a distant place to data, must adopt the mode of relay to transmit.It is 100 meters at every interval or less than 100 meters N1 that all distributing, N2, N3......Nn terminal.N1 sends data to N2, sends N3 after N2 receives again to, so just can send Nn to always, and this makes storage pass and sends out.Why between central computer and terminal, need to increase concentrator? this is because the distance of the terminal that central computer is installed from each user sub-district has all substantially exceeded 100 meters, terminal and central computer are impossible by wireless transmission directly, therefore each sub-district is except having acquisition terminal, also need a concentrator, pass through the mode swap data of wireless channel between concentrator and all terminals of this sub-district.It is might direct communication that each concentrator and distance are no more than 100 meters terminal, and surpass 100 meters the communicating by letter of terminal and concentrator with concentrator distance, will can with the terminal of concentrator direct communication the relay by those, carry out in the mode that relaying each other, storage are transmitted, just as the N1 that passes through of top introduction carries out to the mode of Nn relay.Concentrator is stored in the mass storage of itself by wireless channel, can get up the data aggregation of all terminals of whole sub-district in the mode of relaying each other.And concentrator can carry out in wired mode by telephone wire with communicating by letter of central computer.Therefore, communicating by letter between central computer and the concentrator can not be subjected to distance limit, even can dial from a distant place and cry communicating by letter of trunk call realization and concentrator.In brief, in the above-mentioned wireless kilowatt meter reading-out system, wired mode is used in the communication from the central computer to the concentrator; Each concentrator adopts wireless mode to each communication between terminals of its subordinate.Therefore, just must set up the route of communicating by letter between each terminal of concentrator and its subordinate.At present, also there is not the technical scheme of head it off to occur.
Summary of the invention: technical matters to be solved by this invention is, provides a kind of in above-mentioned wireless kilowatt meter reading-out system, realizes that concentrator and subordinate terminal set up the method for the route of communicate by letter, sets up reliable radio communication and get in touch between concentrator and each terminal.
Technical scheme of the present invention is, a kind of trunking method each other that is used for the automated wireless kilowatt meter reading-out system, it is applied to by a central station, is under the jurisdiction of a plurality of concentrators of central station, the wireless automatic meter recording system that is under the jurisdiction of the great amount of terminals of each concentrator, forms with some subscriber's meter meters that each terminal is connected by wired mode, each concentrator in this system and terminal all have the ability of emission/reception wireless signal, its transmission range is not more than 100 meters, it is characterized in that
(1) the actual installation position of on-the-spot investigation concentrator and all terminals of subordinate, according to radio-frequency region and visual physical distance, manually work out communication route contact figure from concentrator to all terminals, guarantee that arriving each terminal from concentrator all has a definite path, form one and comprise whole paths full routing table
(2) in the storer of concentrator and all terminal, all comprise one first address table and one second address table, wherein, first address table is used for storing self address, second address table is used for storing the routing table that will generate, second address table of concentrator is being stored above-mentioned full routing table, and second address table of each terminal is stored following content: the address of the up terminal (or concentrator) that storage and this terminal are nearest; Store the address of each terminal on descending all individual paths of this terminal,
(3) reliability of the above-mentioned routing table of test, in wired or wireless mode routing table is sent to concentrator by central station, send test frame to all terminals by concentrator one by one according to the routing table of having stored, whether the routing table of the artificial establishment of checking is reliable, the steps include:
A. concentrator sends test frame to all terminals successively, wherein contain address as the concentrator of source address, link terminal address and as the purpose terminal address of destination address, the time enough interval of replying for dut terminal is reserved in routing table and the instruction that requires the purpose terminal responds between per two tests are auspicious.
B. after tested terminal receives the test frame that concentrator sends, send acknowledgement frame to concentrator immediately, wherein comprise this terminal address as source address, link terminal address and as the concentrator address of destination address, and answer codes.
C. concentrator receives from after the replying of tested terminal, confirm reliable with being connected of this terminal, the reliable terminal address that connects is stored in specific memory zone in the concentrator, can show or it be inquired about by display device by central station, dut terminal is stored the address with the nearest up terminal (or concentrator) of this terminal in second address table of oneself, simultaneously, link terminal between concentrator and dut terminal will be stored the address with the nearest up terminal (or concentrator) of this link terminal, and the address of each terminal on stored energy descending all individual paths of communicating by letter with this link terminal
D. if within the predetermined time, do not receive replying from tested terminal, the route establishment mistake of then representing this terminal, with this terminal iidentification is the fault terminal, the address of fault terminal is stored in specific memory zone in the concentrator, can show or it be inquired about by display device by central station
E. through first round test, having that a part of terminal is identified can be according to routing table and concentrator reliable communication, and remaining terminal according to the routing table of being scheduled to can not with the concentrator reliable communication,
(4) revise routing table, at those can not with the fault terminal of concentrator reliable communication, again reconnoitre the erecting stage of terminal, path to predetermined routing table is adjusted, these adjustment only limit to the change to fault terminal route, for those can with the terminal of concentrator reliable communication, its position in routing table must be kept intact constant
(5) new routing table is deposited in second address table of concentrator,
(6) test once more, the steps include:
A. concentrator sends test frame to all fault terminals successively according to amended path, wherein contain address as the concentrator of source address, link terminal address and as purpose terminal address, the routing table of destination address and the instruction that requires the purpose terminal responds, between per two tests are auspicious, reserve the time enough interval of replying for dut terminal
B. after tested terminal receives the test frame that concentrator sends, send acknowledgement frame to concentrator immediately, wherein comprise this terminal address as source address, link terminal address and as the concentrator address of destination address, and answer codes,
C. concentrator receives from after the replying of tested terminal, confirm reliable with being connected of this terminal, the reliable terminal address that connects is stored in specific memory zone in the concentrator, can show or it be inquired about by display device by central station, dut terminal is stored the address with the nearest up terminal (or concentrator) of this terminal in second address table of oneself, simultaneously, link terminal between concentrator and dut terminal will be stored the address with the nearest up terminal (or concentrator) of this link terminal, and the address of each terminal on stored energy descending all individual paths of communicating by letter with this link terminal
D. if within the predetermined time, do not receive replying from tested terminal, represent that then the route of this terminal works out still mistake, be the fault terminal with this terminal iidentification once more, the address of fault terminal is stored in specific memory zone in the concentrator, can show or it be inquired about by display device by central station
E. take turns test through second, having that the original fault terminal of a part is identified can be according to new routing table and concentrator reliable communication, and remaining fault terminal according to new routing table still can not with the concentrator reliable communication,
(7) at the fault terminal that still exists, repeat above-mentioned (4), (5), (6) three steps, up to all terminals can both with the concentrator reliable communication till, this moment, second address table of all terminal was all stored address with the nearest up terminal (or concentrator) of this terminal, and had stored the address of each terminal on descending all individual paths of this terminal.
After test is finished, just no longer comprise the link terminal address during data transmission in the Frame, only need comprise source address and purpose terminal address, shorten greatly when so the length of Frame will be than test, transmission efficiency can be higher.
The invention has the beneficial effects as follows, realized that concentrator communicates by letter with the automated wireless between the affiliated terminal, need not arrange the person of checking meter to check meter to each user terminal, can at any time, automatically collect each user's data, significantly reduce hand labor, reduced managerial cost, improved automaticity.
Description of drawings:
Fig. 1 is the composition synoptic diagram of wireless kilowatt meter reading-out system.Wherein the table meter is mounted in the on-site measuring apparatus of each user, for example ammeter, water meter, gas meter etc.Terminal among the figure can adopt disclosed device in the Chinese patent application 01229319.9, or the device with similar functions.Concentrator among the figure can adopt disclosed device in the Chinese patent application 01229317.2, or the device with similar functions.Central computer is arranged on the location of data management office, for example power administration.Only drawn a concentrator among the figure, a plurality of concentrators and central computer wired connection in fact can have been arranged.
Fig. 2 is the software flow pattern of concentrator.
Fig. 3 is the software flow pattern of terminal.
Embodiment:, further describe embodiments of the present invention below by for example.
The main core of design philosophy of the present invention is exactly artificial establishment routing table, and above say very clear of the establishment of routing table also is readily appreciated that.Key is that routing table is tested and routing table is sent to each terminal respectively in test process, just in each terminal in second address table address stored in test process, send by concentrator, because each terminal does not have memory address in second address table before test, except source address and destination address, also include the link terminal address in the test frame when therefore testing, and include the routing table that to issue the purpose terminal, be to answer address stored in purpose terminal second memory address, in case the routing table that test is finished in i.e. all terminal second memory addresss has all been stored in this process, data so next time just transmit has no longer needed to comprise the link terminal address, during test and the frame format of data when transmitting be different, terminal can be distinguished, and can not mix up and confuse.Data transmit in the time frame and do not include the link terminal address, and then the length of frame can shorten, and the efficient of transmission can be higher, and it is necessary including link terminal during test, also has no idea.Routing table sends to concentrator by central station, the result of routing table test can inquire about concentrator by central station and obtain, be which terminal can connect, which terminal does not connect, to its route of terminal modifications that does not connect, send to concentrator, test till success again.
Suppose 15 meter reading terminals are installed in certain sub-district, its code name is respectively 1 to 15, and each terminal connects some subscriber's meter meters by wired mode.Also have a concentrator in this sub-district, code name is 0.The actual installation place of above-mentioned 15 terminals is not quite similar to the distance of concentrator, have within 100 meters, also have outside 100 meters.How between concentrator 0 and terminal 1～15, set up the route of communicating by letter? the method according to this invention, its step is as follows:
The first step is manually worked out routing table.The actual installation position of on-the-spot investigation concentrator and all terminals of subordinate, according to radio-frequency region and visual physical distance, manually work out communication route contact figure from concentrator to all terminals, guarantee that arriving each terminal from concentrator all has a definite path, forms one and comprises whole paths full routing table.Suppose to have worked out the routing table that comprises following 6 routes by artificial prospecting:
①0→1→4→5-→6
②0→1→2→3
③0→1→7→8→9
④0→1→7→8→10→11
⑤0→1→7→8→12
⑥0→1→13→14→15
This routing table shows, concentrator 0 only with terminal 1 within 100 meters scopes, can direct communication; Terminal 1 and terminal 2,4,7,13 can direct communications all within 100 meters scopes; And the like.This is a general judgement.This routing table will be stored in concentrator and all terminal, in the storer of concentrator and all terminal, all comprise one first address table and one second address table, wherein, first address table is used for storing self address, second address table is used for storing the routing table that will generate, storing above-mentioned complete routing table in the storer of concentrator, second address table of each terminal is stored following content: the address of the up terminal (or concentrator) that storage and this terminal are nearest; Store the address of each terminal on descending all individual paths of this terminal.
Second goes on foot, and tests the reliability of above-mentioned routing table.Send test frame to all terminals by concentrator one by one according to the routing table of having stored, whether the routing table of the artificial establishment of checking is reliable, the steps include:
A. concentrator sends test frame to all terminals successively, wherein contain address as the concentrator of source address, link terminal address and as the purpose terminal address of destination address, the time enough interval of replying for dut terminal is reserved in routing table and the instruction that requires the purpose terminal responds between per two tests are auspicious.
B. after tested terminal receives the test frame that concentrator sends, send acknowledgement frame to concentrator immediately, wherein comprise this terminal address as source address, link terminal address and as the concentrator address of destination address, and answer codes.
C. concentrator receives from after the replying of tested terminal, and confirms reliably with being connected of this terminal, and the reliable terminal address that connects is stored in specific memory zone in the concentrator, can show or by central station it be inquired about by display device.Dut terminal is stored the address with the nearest up terminal (or concentrator) of this terminal in second address table of oneself, simultaneously, link terminal between concentrator and dut terminal will be stored the address with the nearest up terminal (or concentrator) of this link terminal, and the address of each terminal on stored energy descending all individual paths of communicating by letter with this link terminal.
D. if within the predetermined time, do not receive replying from tested terminal, the route establishment mistake of then representing this terminal, with this terminal iidentification is the fault terminal, the address of fault terminal is stored in specific memory zone in the concentrator, in order to showing or by central station its inquiry is just known by display device.
E. through first round test, having that a part of terminal is identified can be according to routing table and concentrator reliable communication, and remaining terminal according to the routing table of being scheduled to can not with the concentrator reliable communication.
For instance, suppose that concentrator 0 sends test frame to terminal 15,, must transmit by terminal 1,13 and 14 and could arrive 15 according to above-mentioned route 6. 0 → 1 → 13 → 14 → 15.Detailed process is:
At first concentrator 0 sends a string code with wireless mode, and code form is such: line code+routing table+test code under terminal address 1+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+.
After terminal 1 is received this code, judge order to oneself according to first terminal address 1; Code according to the 1st relay address 1 back is the 2nd relay address 13 again, order is become following form: line code+routing table+test code under terminal address 13+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+, send amended code then.
After terminal 13 is received this code, judge order to oneself according to first terminal address 13; Code according to the 2nd relay address 13 back is the 3rd relay address 14 again, order is become following form: line code+routing table+test code under terminal address 14+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+, send amended code then.
After terminal 14 is received this code, judge order to oneself according to first terminal address 14; Again according to the 1st relay address 14 back destination addresses 15, order is become following form: line code+routing table+test code under terminal address 15+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+, send amended code then.
After receiving the above-mentioned code that sends by terminal 14 when terminal 15, it is identical with self address to judge destination address 15, routing table is stored in second address table of self, code is become following form send: terminal address 14+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+ goes up line code+response code.
Terminal 14 is judged order to oneself according to the location, location 14 in first code after receiving code, judges according to last line code and uploads.Therefore code being become following form sends: terminal address 13+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+ goes up line code+response code.And the like, the order after terminal 1 is transmitted just becomes: concentrator address 0+ source address 0+ the 1st relay address 1+ the 2nd relay address 13+ the 3rd relay address 14+ destination address 15+ goes up line code+response code.
After concentrator is received the code of transmitting from terminal 1, just verified that from concentrator 0 to terminal 15 can carry out reliable communication, and routing table has successfully been sent to terminal 15.
Through test, having some terminals can not communicate with concentrator, is called the fault terminal, need make amendment to predetermined route, to solve the problem of fault terminal.
The 3rd step, revise routing table, at those can not with the fault terminal of concentrator reliable communication, again reconnoitre the erecting stage of terminal, path to predetermined routing table is adjusted, these adjustment only limit to the change to fault terminal route, for those can with the terminal of concentrator reliable communication, its position in routing table must be kept intact constant.
Suppose that terminal 15 do not reply, then supposition is revised through the inspection of the scene of a crime and has been determined that a new path undertaken one time by above-mentioned step such as 0 → 1 → 2 → 3 → 15 again, if terminal 15 is replied, then revise successfully in this path.)
More than be test process, just carry out according to following principle by data if no problem is then recruited survey for test process.
The routing table of storing in all terminals should be stored the address with the terminal of descending all individual paths of the address of the nearest up terminal of this terminal and this terminal.For example, for terminal 8, it is arranged in three paths,
③0→1→7→8→9
④0→1→7→8→10→11
⑤0→1→7→8→12
Therefore, in terminal 8, to store the address of up terminal 7, and store 3 descending individual paths: 8 → 9,8 → 10 → 11,8 → 12.And, store the address of up terminal 1 for terminal 7, and store 3 descending individual paths: 7 → 8 → 9,7 → 8 → 10 → 11,7 → 8 → 12.
The inventive method recruits the routing procedure when surveying data as follows: for example, concentrator 0 will be asked for data to terminal 10, and through the routing table of inquiry self storage, finding out the path that comprises terminal 10 is 0 → 1 → 7 → 8 → 10 → 11.In view of the above, the command frame that it sends comprises two addresses, and one is purpose terminal address 10, and another is to transmit terminal address 1, and promptly 1,10, order; After terminal 1 receives orders, inquire destination address and self address does not match, then will transmit.It is inquired about in the routing table of oneself storage according to destination address 10, and inquiring route is 7 → 8 → 10 → 11, and then its command frame of sending comprises two addresses, and purpose terminal address 10 is transmitted terminal address and changed 1 into, and promptly 7,10, order; After terminal 7 receives orders, mail to terminal 10 by same program; Behind the incoming terminal 10, command frame becomes 10,10, order, and terminal 10 is found destination addresses and oneself matching addresses, the order that makes an immediate response, and change frame format into 8,1, uplink is carried out in this order can be passed to concentrator 0.
The software flow pattern of concentrator is seen Fig. 2.The software of concentrator is write easily the reliability height with the establishment of PLM96 higher level lanquage.Hardware initialization is carried out initialization to basic hardware resource, as serial ports, timer, interruption etc.Concentrator by wireless channel or wire message way (telephone wire) from 96 microcontroller serial ports receive that central station sends order is set after, after verification is errorless, in the storer that the quantity and the routing table of terminal is stored in self, carry out the foundation of routing table test as next step.After 96 single-chip microcomputers are received the test command that central station sends, just use another expansion serial ports to deliver a letter and begin to carry out the routing table test job by the micropower number.To store less than the terminal address of response in the test process, inquire about and revise the route of this terminal in order to central station.So repeatedly up to testing successfully.Concentrator is given an order to relevant terminal after receiving that the trick of central station is surveyed data command, if receive data data is beamed back main website, if no datat is beamed back to main website and denied hardwood.
The software flow pattern of terminal is seen Fig. 3.The software of terminal is write easily the reliability height with the establishment of PLM51 higher level lanquage.Hardware initialization is carried out initialization to basic hardware resource, as serial ports, timer, interruption etc.Terminal is carried out acquisition pulse work at ordinary times, with interrupt mode by the micropower number deliver a letter receive the test command that concentrator sends from microcontroller serial port after, after verification is errorless, beam back response, and the routing iinformation in the test command stored, recruit as next step and survey data and carry out the foundation of relaying each other, after terminal receives that trick that concentrator is sent is surveyed data command, carry out route according to the routing iinformation in the storer, data are returned to concentrator.
Claims (1)
1, a kind of trunking method each other that is used for the automated wireless kilowatt meter reading-out system, it is applied to by a central station, is under the jurisdiction of a plurality of concentrators of central station, the wireless automatic meter recording system that is under the jurisdiction of the great amount of terminals of each concentrator, forms with some subscriber's meter meters that each terminal is connected by wired mode, each concentrator in this system and terminal all have the ability of emission/reception wireless signal, its transmission range is not more than 100 meters, it is characterized in that
(1) the actual installation position of on-the-spot investigation concentrator and all terminals of subordinate, according to radio-frequency region and visual physical distance, manually work out communication route contact figure from concentrator to all terminals, guarantee that arriving each terminal from concentrator all has a definite path, form one and comprise whole paths full routing table
(2) in the storer of concentrator and all terminal, all comprise one first address table and one second address table, wherein, first address table is used for storing self address, second address table is used for storing the routing table that will generate, second address table of concentrator is being stored above-mentioned full routing table, and second address table of each terminal is stored following content: the address of the up terminal (or concentrator) that storage and this terminal are nearest; Store the address of each terminal on descending all individual paths of this terminal,
(3) reliability of the above-mentioned routing table of test, in wired or wireless mode routing table is sent to concentrator by central station, send test frame to all terminals by concentrator one by one according to the routing table of having stored, whether the routing table of the artificial establishment of checking is reliable, the steps include:
A. concentrator sends test frame to all terminals successively, wherein contain address as the concentrator of source address, link terminal address and as the purpose terminal address of destination address, routing table and the instruction that requires the purpose terminal responds, between per two tests are auspicious, reserve the time enough interval of replying for dut terminal
B. after tested terminal receives the test frame that concentrator sends, send acknowledgement frame to concentrator immediately, wherein comprise this terminal address as source address, link terminal address and as the concentrator address of destination address, and answer codes,
C. concentrator receives from after the replying of tested terminal, confirm with being connected of this terminal reliable dut terminal in second address table of oneself, store and the address of the up terminal (or concentrator) that this terminal is nearest, simultaneously, link terminal between concentrator and dut terminal will be stored the address with the nearest up terminal (or concentrator) of this link terminal, and the address of each terminal on stored energy descending all individual paths of communicating by letter with this link terminal
D. if within the predetermined time, do not receive from the replying of tested terminal, then represent the route establishment mistake of this terminal, be the fault terminal with this terminal iidentification,
E. through first round test, having that a part of terminal is identified can be according to routing table and concentrator reliable communication, and remaining terminal according to the routing table of being scheduled to can not with the concentrator reliable communication,
(4) revise routing table, at those can not with the fault terminal of concentrator reliable communication, again reconnoitre the erecting stage of terminal, path to predetermined routing table is adjusted, these adjustment only limit to the change to fault terminal route, for those can with the terminal of concentrator reliable communication, its position in routing table must be kept intact constant
(5) new routing table is deposited in second address table of concentrator,
(6) test once more, the steps include:
A. concentrator sends test frame to all fault terminals successively according to amended path, wherein contain address as the concentrator of source address, link terminal address and as purpose terminal address, the routing table of destination address and the instruction that requires the purpose terminal responds, between per two tests are auspicious, reserve the time enough interval of replying for dut terminal
B. after tested terminal receives the test frame that concentrator sends, send acknowledgement frame to concentrator immediately, wherein comprise this terminal address as source address, link terminal address and as the concentrator address of destination address, and answer codes,
C. concentrator receives from after the replying of tested terminal, confirm reliable with being connected of this terminal, dut terminal is stored the address with the nearest up terminal (or concentrator) of this terminal in second address table of oneself, simultaneously, link terminal between concentrator and dut terminal will be stored the address with the nearest up terminal (or concentrator) of this link terminal, and the address of each terminal on stored energy descending all individual paths of communicating by letter with this link terminal
D. if within the predetermined time, do not receive from the replying of tested terminal, represent that then the route of this terminal is worked out still mistake, be the fault terminal with this terminal iidentification once more,
E. take turns test through second, having that the original fault terminal of a part is identified can be according to new routing table and concentrator reliable communication, and remaining fault terminal according to new routing table still can not with the concentrator reliable communication,
(7) at the fault terminal that still exists, repeat above-mentioned (4), (5), (6) three steps, up to all terminals can both with the concentrator reliable communication till, deposit second address table of concentrator at last in, this moment, second address table of all terminal was all stored address with the nearest up terminal (or concentrator) of this terminal, and had stored the address of each terminal on descending all individual paths of this terminal.
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| CNB011366176A CN1182661C (en) | 2001-10-23 | 2001-10-23 | Interact relaying method used for radio meter data recording system |
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| CNB011366176A CN1182661C (en) | 2001-10-23 | 2001-10-23 | Interact relaying method used for radio meter data recording system |
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| CN101540096B (en) * | 2008-03-17 | 2013-08-21 | 吴明星 | Method for managing power supply of passive meter reading system |
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- 2001-10-23 CN CNB011366176A patent/CN1182661C/en not_active Expired - Fee Related
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| CN101206479B (en) * | 2006-12-22 | 2012-01-04 | 费舍-柔斯芒特系统股份有限公司 | Wireless architecture utilizing geo-referencing |
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| CN104064006B (en) * | 2014-06-05 | 2017-01-25 | 中国航天科技集团公司第五研究院第五一三研究所 | Communication method of centralized meter reading system |
| CN104064006A (en) * | 2014-06-05 | 2014-09-24 | 中国航天科技集团公司第五研究院第五一三研究所 | Communication method of centralized meter reading system |
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| CN106875663A (en) * | 2017-04-18 | 2017-06-20 | 天纳能源科技（上海）有限公司 | A kind of data concentrator and control method for transformer and distribution power station monitoring system |
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