CN103906044A - Networking method of wireless electricity consumption information acquisition ad hoc network - Google Patents
Networking method of wireless electricity consumption information acquisition ad hoc network Download PDFInfo
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Abstract
The invention relates to a networking method of a wireless electricity consumption information acquisition ad hoc network. According to the technical scheme, the networking method of the wireless electricity consumption information acquisition ad hoc network includes the steps that first, the network is established; second, child nodes without access to the network search for a network center coordinator or child nodes with access to the network; third, the child nodes without access to the network which are searching for the network select the network center coordinator or the child nodes with access to the network as ancestor nodes and send network access requests to the ancestor nodes; fourth, after the ancestor nodes receive the network access requests, network access addresses are allocated to the child nodes applying for access to the network; fifth, the child nodes applying for access to the network send the network access addresses and fixed addresses to the network center coordinator; sixth, if the network center coordinator agrees with that the child nodes applying for access to the network have access to the network, the child nodes applying for access to the network successfully get access to the network, if the network center coordinator does not agree with that, reject information is returned to the child nodes applying for access to the network, and after receiving the information, the child nodes applying for access to the network execute the second step to the sixth step till successfully getting access to the network. The networking method of the wireless electricity consumption information acquisition ad hoc network is used in the field of wireless acquisition of electricity consumption information.
Description
Technical field
The present invention relates to a kind of network-building method of MANET, particularly a kind of wireless power information gathers the network-building method of MANET, is mainly applicable to the wireless collection technical field of power information.
Background technology
Along with the utility develop rapidly of Chinese society, the raising of living standards of the people, the development of commercialize housing, quality and the class of residential building are more and more higher, and resident family also improves day by day to the requirement of residential environment, estate management level.Concerning power department and user, the disadvantage that traditional counting cost by gas meter mode exists is more and more outstanding, and counting cost by gas meter difficulty has also become the problem in management.
In long-distance meter-reading system, if adopt laying-out, laying-out construction cost is too high, and is subject to regional limits excessive; If adopt a telephone line dialing access bearing wheel continuous query, monitoring range is less, and real-time and countercharge poor.
Summary of the invention
The technical problem to be solved in the present invention is: provide the fireballing wireless power information of a kind of networking to gather the network-building method of MANET for the problem of above-mentioned existence, utilize the automatic route of wireless network of the tree structure of the method establishment, the feature that network capacity is large.
The technical solution adopted in the present invention is: wireless power information gathers the network-building method of MANET, it is characterized in that comprising the following steps:
S1, network center's focal point networking, determine network numbering and working channel;
S2, the child node not networking send respectively beacon request at eight channels, and focal point, search network center or the child node having networked, reply it after network center focal point or the child node having networked are received beacon request;
The child node that do not network of S3, search network is recorded in replying of receiving on each channel,, signal preferential according to rank takes second place, same level, the principle of signal priority, select network center focal point or the child node that networked as own superior node, and send to network to it and ask;
S4, described superior node receive after the request of networking, distribute one to child node that application networks and enter net address, and downstream site using this child node as oneself;
The child node that S5, application network is received entering after net address of distribution, this is entered to net address and self fixed address is sent to network center focal point;
S6, network center focal point are according to the information of the child node of networking pattern and application networking, determine whether and agree to network, if agree to, the child node networking to application is returned and is agreed to networking information, and the child node that this application networks successfully networks, if disagree with, the child node networking to application is returned to refusal networking information, the child node that application networks is received after refusal networking information, performs step successively S2-S6, until successfully network.
Described network center focal point is connected with concentrator by serial ports, and each child node all has routing function, and respectively with collector and/or the ammeter corresponding terminal with routing function that is connected to form one by one.
Described networking comprises the following steps:
After S101, network center focal point power on, number to concentrator log on, and read the fixed address of concentrator, as the fixed address of oneself;
S102, concentrator are judged networking pattern, and network numbering and networking pattern are informed to network center focal point, if networking pattern is Validation Mode, perform step S103, if networking pattern is enrollment mode, perform step S104;
The child node fixed address that allows networking is downloaded in S103, network center focal point to concentrator application;
Channel energy scanning is carried out in S104, network center focal point, and chooses a channel the cleanest as working channel;
S105, network center's focal point active scan, check the network numbering that obtains whether with other the label of establishing network have and conflict, if there is conflict, network numbering is added to one, until without conflict, complete networking, if without conflict, networking success.
In step S6, in the time that networking pattern is Validation Mode, the child node fixed address that the fixed address of child node that network center focal point networks application and the permission of download network is compared, if both are unanimously by checking, network center records focal point the child node information that this application networks, and returns and agree to networking information, if both are inconsistent, the child node information that this application networks is not recorded in network center focal point, and returns to refusal networking information; In the time that networking pattern is enrollment mode, network center records focal point the child node information that this application networks, and returns and agree to networking information.
The fixed address acquisition methods of the child node that described application networks is, by reading the fixed address of the collector that is attached thereto or ammeter as the fixed address of this child node, or obtains by artificial setting of serial ports.
When the child node that described application networks reads the fixed address of collector or ammeter, if also do not receive reply after reading continuously three times, the address of dispatching from the factory of 6 bytes while adopting this child node self to dispatch from the factory networks as the fixed address application of oneself.
Whether the child node that completes networking detects at set intervals oneself and is interfered, continue to work on original working channel if noiseless, if there is interference to start scan channel, search for and select a channel the cleanest, the information that overseas broadcast oneself will be jumped to new channel work, then jumps on new channel and works; The higher level of this child node and downstream site are received after broadcast message, record this information, in the time of needs and this disturbed child node communication, the channel of oneself is jumped to aforementioned new channel and carry out communication, and after communication, the original working channel of rebound works on.
Whether disturbed child node is timed to original working channel detection interference and eliminates, if do not eliminated, proceed on the new channel of oneself selecting and work, if eliminated, jump on original working channel and work, and broadcast the information of oneself getting back to original working channel work; The higher level of disturbed child node and downstream site are received the broadcast message of disturbed child node, record this information, contrast by channel, learn that the disturbance state of this disturbed child node is removed, then during with this disturbed child node communication, channel no longer switch.
The child node superior node transmission at set intervals heartbeat packet that completes networking, superior node is received after heartbeat packet, replys and confirms bag; If superior node is not received the heartbeat packet of a certain downstream site within the time of specifying, this downstream site of active call, if do not receive response, judge that this node is as malfunctioning node, and active reporting is to network center focal point.
The child node that sends heartbeat packet is not received the confirmation bag of superior node at the appointed time, and search network application networks again.
The invention has the beneficial effects as follows: 1, each child node power on after Automatic-searching network and initiatively application network, networking speed is fast, after networking success, forms tree network structure, clear in structure, network capacity is large.2, for interference source, its coverage is always limited, for whole network, the always part being interfered, so just do not need whole network to carry out frequency hopping, the part node frequency hopping relevant with these parts that only need to be interfered processed the problem that also just can solve its normal communication, the present invention sets up local hopping, whether the child node that completes networking detects at set intervals oneself and is interfered, if there is interference to start scan channel, search for and select a channel the cleanest, and jump on new channel and work, the higher level of this child node and downstream site are received after broadcast message, record this information, in the time of needs and this disturbed child node communication, the channel of oneself is jumped to aforementioned new channel and carry out communication, make the network also can normal communication in the time being subject to co-channel interference, guarantee the stability of network, can not affect the normal work of other child nodes that are not interfered simultaneously yet.3, set up heart beat detection mechanism, complete the child node superior node transmission at set intervals heartbeat packet of networking, superior node is received after heartbeat packet, replys and confirms bag; If superior node is not received the heartbeat packet of a certain downstream site within the time of specifying, this downstream site of active call, if do not receive response, judges that this downstream site is as malfunctioning node; Utilize this mechanism can effectively check the working condition of network node, the malfunctioning node in discovering network, also can repair timely to invalid path in time, guarantees the work that network is reliable and stable.4, adopt Validation Mode networking, can effectively limit the node that adds network, comprise its total amount and numbering, same network is installed, the problem that the network of fringe node adds thereby solve adjoining area.
Accompanying drawing explanation
Fig. 1 is networking flow chart in network center focal point in the present invention.
Fig. 2 is automatic network-building schematic flow sheet of the present invention.
Fig. 3 is the first structural representation that network-building method of the present invention forms MANET.
Fig. 4 is the second structural representation that network-building method of the present invention forms MANET.
Fig. 5 is the second structural representation that network-building method of the present invention forms MANET.
Embodiment
As shown in Figure 1 and Figure 2, the present embodiment network-building method comprises the following steps:
S1, network center focal point (being connected with concentrator by serial ports) networking, determine network numbering and working channel.
S2, the child node (respectively with collector and/or ammeter corresponding being connected one by one, and each child node all has routing function) not networking send respectively beacon request at eight channels, focal point, search network center or the child node having networked; After network center focal point or the child node having networked are received beacon request, it is replied, inform that the not networking child node oneself of search network networks.
The child node that do not network of S3, search network is recorded in replying of receiving on each channel,, signal preferential according to rank takes second place, same level, the principle of signal priority, the child node of selecting network center focal point or networked is as the superior node (the network center focal point that preferential selection route rank is high, signal strength signal intensity is good or the child node having networked are as superior node) of oneself, and sending to it request of networking, application adds network.
Superior node described in S4, step S3 receives after the request of networking, distributes one to child node that application networks and enters net address, and downstream site using this child node as oneself; Then this information is returned to the child node that application networks;
The child node that S5, application network is received entering after net address of distribution, this is entered to net address and self fixed address is sent to network center focal point.The fixed address acquisition methods of the child node that described application networks is, read the fixed address of the collector that is attached thereto or ammeter as the fixed address of this child node, if also do not receive reply after reading continuously three times, the address of dispatching from the factory of 6 bytes while adopting this child node self to dispatch from the factory networks as the fixed address application of oneself.In order to meet client's diversified demand, also can carry out address setting with manual type to child node by serial ports in advance, after node powers on like this, just can not carry out again and read address function, but directly use and address is set as self fixed address.
S6, network center focal point (comprise Validation Mode and enrollment mode according to networking pattern, wherein Validation Mode refers to need to specify the child node that can network before networking, non-designated node does not allow to network, enrollment mode refers to that the child node networking is unrestricted, every node that can network is all accepted networking) and the information of child node that networks of application, determine whether and agree to network.In the time that networking pattern is Validation Mode, the child node fixed address that the fixed address of child node that network center focal point networks application and the permission of download network is compared, if both are unanimously by checking, network center records focal point the child node information that this application networks, and returns and agree to networking information; If both are inconsistent, the child node information that this application networks is not recorded in network center focal point, and returns to refusal networking information; In the time that networking pattern is enrollment mode, network center records focal point the child node information that this application networks, and returns and agree to networking information.
S7, application network child node receive after the information of returning network center focal point, if agree to network, this child node successfully adds network; If disagree with networking, perform step successively S2-S7, search network application networks again, until successfully network.
After child node networks successfully, network center focal point sends successfully order of corresponding child node networking to concentrator, to notify concentrator to have which child node to add network.
In step S1, networking comprises the following steps:
After S101, network center focal point power on, number to concentrator log on, and read the fixed address of concentrator, as the fixed address of oneself;
S102, concentrator are judged networking pattern, and network numbering and networking pattern are informed to network center focal point, if networking pattern is Validation Mode, perform step S103, if networking pattern is enrollment mode, perform step S104;
The child node fixed address that allows networking is downloaded in S103, network center focal point to concentrator application;
Channel energy scanning is carried out in S104, network center focal point, and chooses a channel the cleanest as working channel;
S105, network center's focal point active scan, check the network numbering that obtains whether with other the label of establishing network have and conflict, if there is conflict, network numbering is added to one, until without conflict, complete networking, if without conflict, networking success; After networking success, network center focal point sends networking to concentrator and successfully indicates, network can be accepted child node and add network.
The child node that completes networking detects at set intervals and (is equivalent to periodically detect, for example within 1 hour, detect once, this cycle can arrange as required) oneself whether be subject to co-channel interference (node judges according to the identifiability of the continuation of spacing wave intensity and signal), continue if noiseless in the upper work of original working channel (when networking definite working channel), if there is interference to implement the anti-interference program of local frequency hopping.This example is interfered as example (relevant have higher level and subordinate's routing node all needs frequency hopping with this child node) and describes take the child node of middle one-level:
The child node that completes networking is found oneself to be subject to after co-channel interference, starts scan channel, searches for and select a channel the cleanest, and the information that overseas broadcast oneself will be jumped to new channel work, then jumps on new channel and work; The higher level of this child node and downstream site are received after broadcast message, record this information, in the time of needs and this disturbed child node communication, first broadcast oneself and will carry out channel hopping, tell the time of the own redirect of other nodes, then the channel of oneself is jumped to aforementioned new channel and carry out communication, after communication, the original working channel of rebound works on; Whether disturbed child node is timed to original working channel detection interference and eliminates, if do not eliminated, proceed on the new channel of oneself selecting and work, if eliminated, jump on original working channel and work, and broadcast the information of oneself getting back to original working channel work; The higher level of disturbed child node and downstream site are received the broadcast message of disturbed child node, record this information, contrast by channel, learn the disturbance state releasing of this disturbed child node, during again with this disturbed child node communication, channel no longer switches, and on original working channel, works.Utilize this part frequency modulation mechanism, make the network also can normal communication in the time being subject to co-channel interference, guaranteed the stability of network, also can not affect the normal work of other nodes that are not interfered simultaneously.
In addition, complete the child node superior node transmission at set intervals heartbeat packet of networking, superior node is received after heartbeat packet, replys and confirms bag; If superior node is not received the heartbeat packet of a certain downstream site within the time of specifying, this downstream site of active call, if do not receive response, judge that this node is as malfunctioning node, and active reporting is to network center focal point, effectively to check the working condition of network node, the malfunctioning node in discovering network in time.The child node that sends heartbeat packet is not received the confirmation bag of superior node at the appointed time, and search network application networks again, so that repair path in time.
The MANET that utilizes aforementioned network-building method to form is a kind of intelligent low-speed sensor network of tree network structure, and according to the difference of actual conditions, institute becomes slightly difference of MANET structure.
As shown in Figure 3, MANET is made up of network center focal point, concentrator, child node and collector, wherein network center focal point is connected with concentrator, it is the center of whole ad-hoc network, set up network and be responsible for administering and maintaining of network by it, child node is connected with collector, and active searching network adds, and is responsible for route and collection to related data in network; In the time that certain child node is connected with the collector of a certain data transfer path terminal, this child node is actually a terminal node, for read collector data and by this data upload; In the time that this child node is connected with the collector in the middle of this data transfer path, this child node is actually an intermediate node, for route data; That is to say that each child node not only can be used as terminal node but also can be used as intermediate node.
As shown in Figure 4, MANET is made up of network center focal point, concentrator, child node and ammeter, and its operation principle is identical with MANET described in Fig. 3, and difference is only to adopt ammeter to replace collector.
As shown in Figure 5, MANET is made up of network center focal point, concentrator, child node, collector and ammeter, its operation principle is identical with MANET described in Fig. 3, difference is only that the collector that both comprises being connected with child node also comprises ammeter, and all child nodes not only can be used as terminal node but also can be used as intermediate node.
Described network center coordinator node and child node adopt respectively Shanghai Sunray Technology Co., Ltd. to produce, and model is the wireless module of SRWF-3E68 and SRWF-4E88.
Described in the present embodiment, the baud rate of MANET transfer of data is chosen within the scope of 2.4-9.6KB/s, and the low rate of this transfer of data requires system must reduce transfer of data, could form an efficient network.Tree structure network, clear in structure, networking speed is fast, and transmission data are few, meet network requirement.
Described MANET can be realized following functions: 1, data transparency reports, and node is received after interface data, and data transparency is sent to network center focal point, then is sent to concentrator through network center focal point, compliant with various protocols.2, data transparency issues, and the interface data of concentrator is received focal point by network center, data transparency can be issued to the terminal node of appointment, compliant with various protocols.3, the automatic route of data, node is received data, can automatically continue to forward according to the path of specifying.4, automatic repair path, when the original path of node is obstructed, can find new Path Connection network.5, anti-interference, system can be in the time that operating frequency be interfered, and jumps to other channel and works on.6 mode of operations are flexible, and system can be set to enrollment mode and two kinds of networking modes of Validation Mode.7, system can form 7 grades of networks (on-the-spot node is mostly all 3,4 grades of distributions), below each node, can be with 16 nodes (for balanced node load, avoid a large amount of terminal nodes to carry out transfer of data by one of them node), network capacity is huge.
In practical application, install at the scene all related system hardware (being wireless meter tool terminal, concentrator etc.) and set after the relevant parameter of various kilowatt meter recorders, establish base profile, just can telemanagement and automatic data collection, and can realize the interconnected of information and share without people's intervention, manager can understand, control user's service condition in real time.When concentrator need to check meter or inquire about, according to the protocol format of standard 645 protocol instructions or wireless transparent transmission, instruction is sent to network center focal point; This instruction is handed down to child node corresponding to table meter by network center focal point, and this child node sends to this instruction to show meter, and table meter is according to instruction return information to child node, and child node is received after table is counted the information of returning and is uploaded to network center focal point; The content of checking meter and returning is received focal point by network center, and data are flowed to concentrator by serial ports.
Claims (10)
1. wireless power information gathers a network-building method for MANET, it is characterized in that comprising the following steps:
S1, network center's focal point networking, determine network numbering and working channel;
S2, the child node not networking send respectively beacon request at eight channels, and focal point, search network center or the child node having networked, reply it after network center focal point or the child node having networked are received beacon request;
The child node that do not network of S3, search network is recorded in replying of receiving on each channel,, signal preferential according to rank takes second place, same level, the principle of signal priority, select network center focal point or the child node that networked as own superior node, and send to network to it and ask;
S4, described superior node receive after the request of networking, distribute one to child node that application networks and enter net address, and downstream site using this child node as oneself;
The child node that S5, application network is received entering after net address of distribution, this is entered to net address and self fixed address is sent to network center focal point;
S6, network center focal point are according to the information of the child node of networking pattern and application networking, determine whether and agree to network, if agree to, the child node networking to application is returned and is agreed to networking information, and the child node that this application networks successfully networks, if disagree with, the child node networking to application is returned to refusal networking information, the child node that application networks is received after refusal networking information, performs step successively S2-S6, until successfully network.
2. wireless power information according to claim 1 gathers the network-building method of MANET, it is characterized in that: described network center focal point is connected with concentrator by serial ports, each child node all has routing function, and respectively with collector and/or the ammeter corresponding terminal with routing function that is connected to form one by one.
3. wireless power information according to claim 2 gathers the network-building method of MANET, it is characterized in that described networking comprises the following steps:
After S101, network center focal point power on, number to concentrator log on, and read the fixed address of concentrator, as the fixed address of oneself;
S102, concentrator are judged networking pattern, and network numbering and networking pattern are informed to network center focal point, if networking pattern is Validation Mode, perform step S103, if networking pattern is enrollment mode, perform step S104;
The child node fixed address that allows networking is downloaded in S103, network center focal point to concentrator application;
Channel energy scanning is carried out in S104, network center focal point, and chooses a channel the cleanest as working channel;
S105, network center's focal point active scan, check the network numbering that obtains whether with other the label of establishing network have and conflict, if there is conflict, network numbering is added to one, until without conflict, complete networking, if without conflict, networking success.
4. wireless power information according to claim 3 gathers the network-building method of MANET, it is characterized in that: in step S6, in the time that networking pattern is Validation Mode, the child node fixed address that the fixed address of child node that network center focal point networks application and the permission of download network is compared, if both are unanimously by checking, network center records focal point the child node information that this application networks, and return and agree to networking information, if both are inconsistent, the child node information that this application networks is not recorded in network center focal point, and returns to refusal networking information; In the time that networking pattern is enrollment mode, network center records focal point the child node information that this application networks, and returns and agree to networking information.
5. gather the network-building method of MANET according to the wireless power information described in claim 2 or 3 or 4, it is characterized in that: the fixed address acquisition methods of the child node that described application networks is, by reading the fixed address of the collector that is attached thereto or ammeter as the fixed address of this child node, or obtain by artificial setting of serial ports.
6. wireless power information according to claim 5 gathers the network-building method of MANET, it is characterized in that: when the child node that described application networks reads the fixed address of collector or ammeter, if also do not receive reply after reading continuously three times, the address of dispatching from the factory of 6 bytes while adopting this child node self to dispatch from the factory networks as the fixed address application of oneself.
7. gather the network-building method of MANET according to the wireless power information described in claim 1 or 2 or 3 or 4, it is characterized in that: whether the child node that completes networking detects at set intervals oneself and be interfered, continue to work on original working channel if noiseless, if there is interference to start scan channel, search for and select a channel the cleanest, the information that overseas broadcast oneself will be jumped to new channel work, then jumps on new channel and works; The higher level of this child node and downstream site are received after broadcast message, record this information, in the time of needs and this disturbed child node communication, the channel of oneself is jumped to aforementioned new channel and carry out communication, and after communication, the original working channel of rebound works on.
8. wireless power information according to claim 7 gathers the network-building method of MANET, it is characterized in that: whether disturbed child node is timed to original working channel detection interference and eliminates, if do not eliminated, proceed on the new channel of oneself selecting and work, if eliminated, jump on original working channel and work, and broadcast the information of oneself getting back to original working channel work; The higher level of disturbed child node and downstream site are received the broadcast message of disturbed child node, record this information, contrast by channel, learn that the disturbance state of this disturbed child node is removed, then during with this disturbed child node communication, channel no longer switch.
9. the network-building method that gathers MANET according to the wireless power information described in claim 1 or 2 or 3 or 4, is characterized in that: complete the child node superior node transmission at set intervals heartbeat packet of networking, superior node is received after heartbeat packet, replys and confirms bag; If superior node is not received the heartbeat packet of a certain downstream site within the time of specifying, this downstream site of active call, if do not receive response, judge that this node is as malfunctioning node, and active reporting is to network center focal point.
10. wireless power information according to claim 9 gathers the network-building method of MANET, it is characterized in that: the child node that sends heartbeat packet is not received the confirmation bag of superior node at the appointed time, and search network application networks again.
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