CN109618384A - Wireless sensor network system - Google Patents

Wireless sensor network system Download PDF

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Publication number
CN109618384A
CN109618384A CN201910083765.9A CN201910083765A CN109618384A CN 109618384 A CN109618384 A CN 109618384A CN 201910083765 A CN201910083765 A CN 201910083765A CN 109618384 A CN109618384 A CN 109618384A
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Prior art keywords
node
wireless sensor
sub
clustering
leader cluster
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CN201910083765.9A
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Inventor
荆晓远
崔芳怡
黄鹤
孙莹
姚永芳
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Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
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Nanjing Post and Telecommunication University
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Priority to CN201910083765.9A priority Critical patent/CN109618384A/en
Publication of CN109618384A publication Critical patent/CN109618384A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
    • H04W40/10—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A kind of wireless sensor network system, including multiple sub-clusterings, each sub-clustering includes leader cluster node and multiple other sensors nodes, other sensors node in the sub-clustering is based on the distance between itself and leader cluster node and is divided into more than one sub-clustering, and the leader cluster node in sub-clustering wakes up other wireless sensor nodes in itself sub-clustering in turn within the preset time cycle；Other wireless sensor nodes being waken up acquire monitoring data in corresponding wake-up period and collected monitoring data are sent to the leader cluster node；The leader cluster node receives the monitoring data that other wireless sensor nodes being waken up in the corresponding time cycle in itself sub-clustering are sent and is sent to corresponding base-station node after the received monitoring data of institute are carried out data fusion.Above-mentioned scheme can reduce network energy consumption, the life cycle of prolonging wireless sensor network.

Description

Wireless sensor network system
Technical field
The invention belongs to technical field of wireless, more particularly to a kind of wireless sensor network system.
Background technique
Wireless sensor network is a large amount of miniature, cheap, low-power consumption sensors by being deployed in monitoring region Node, what this part of nodes was mostly constituted in a manner of self-organizing and multi-hop etc., with cooperation mode perception, acquisition, processing between node With monitoring object information in transmission network overlay area, and by after multihop routing and Data Fusion, extremely by converging information Base-station node, then by way of communication these information are sent to the owner of network.Wireless sensor network extends people To information obtaining ability, together with transmission network connection by the physical message of objective world, will be in next generation network People provide direct, effective, true massive information.
Wireless sensor network is usually to provide energy by the minicell on sensor node, faces minicell energy Limited and operate in energy in severe or even dangerous natural environment and be difficult to the problem of supplementing, the Expenditure Levels of the energy content of battery are to section Whether point, which can play a role, plays a decisive role.
Therefore, how to reduce and balanced node energy consumption, extension network lifecycle become application of higher wireless sensor network It is crucial.
Summary of the invention
Present invention solves the technical problem that be how to reduce network energy consumption, the life cycle of prolonging wireless sensor network.
In order to achieve the above object, the present invention provides a kind of wireless sensor network system, including multiple sub-clusterings and base station Node；Each sub-clustering includes leader cluster node and other wireless sensor nodes；The leader cluster node is respectively and in itself sub-clustering The coupling of other wireless sensor nodes, and coupled with the base-station node being correspondingly arranged；
Leader cluster node in sub-clustering, suitable for waking up other wireless biographies in itself sub-clustering in turn within the preset time cycle Sensor node；
Other wireless sensor nodes being waken up are suitable for acquiring monitoring data in corresponding wake-up period and will acquire To monitoring data be sent to the leader cluster node；
The leader cluster node, other wireless sensings being waken up being further adapted for receiving in the corresponding time cycle in itself sub-clustering The monitoring data of device node transmission simultaneously will be sent to corresponding base-station node after the received monitoring data progress data fusion of institute.
Optionally, the leader cluster node, suitable for being other wireless sensors in itself sub-clustering in the corresponding time cycle Corresponding priority is respectively set in node；Wake up other wireless biographies of corresponding priority in turn according to set priority orders Sensor node.
Optionally, the leader cluster node is suitable in the corresponding time cycle being to be based on other wireless sensings in itself sub-clustering Whether device node is working condition in the common node for belonging to more than two sub-clusterings, remaining capacity and a upper wake-up period, Corresponding priority is respectively set for other wireless sensor nodes in itself sub-clustering.
Optionally, the leader cluster node, suitable for using following formula as other wireless sensor nodes in itself sub-clustering Corresponding priority is respectively set in point:
Qi=Qi1+Qi2, and:
Qi1=Eri/Eti+Wi；
Qi2=Qi2′-1；
Wherein, QiIndicate the priority of i-th of wireless sensor node, Qi1 indicates the of i-th wireless sensor node One priority, EriIndicate the current residual electricity of i-th of wireless sensor node, EtiIndicate that i-th of wireless sensor node exists Consumed total electricity in one time cycle, WiIndicate the number of the affiliated sub-clustering of i-th of wireless sensor node, Qi2 indicate the Second priority of i wireless sensor node, Qi2 ' indicate i-th of wireless sensor node the second of previous wake-up period Priority.
Optionally, the leader cluster node is further adapted for before received data are carried out data fusion, to other nothings The monitoring data that line sensor node is in during not being waken up carry out prediction completion.
Optionally, the leader cluster node is not called out suitable for being in using following formula to other wireless sensor nodes The monitoring data waken up in the period carry out prediction completion:
yit=α0+α1y1t+α2y2t+α3y3t+…+αmymt+βt；
Wherein, yitIt is wireless sensor node NiIn the data of moment t, yktIt is wireless sensor node Nk(Nk∈N(i)) In the data of t moment, αkCorrespond to yktPartial correlation coefficient, βtFor preset error term.
Optionally, the leader cluster node, suitable for partial correlation coefficient α is calculated using following formulak:
And:
Y=(yi1..., yih)；
Wherein,Indicate partial correlation coefficient estimated value vector,Indicate partial correlation coefficient αkEstimated value, vector Y indicate without Line sensor node NiH group perception data vector, X indicate wireless sensor node NiThe perception of the neighbor node of place cluster Data matrix, m indicate wireless sensor node NiThe number of the neighbor node of place cluster.
Compared with prior art, the invention has the benefit that
Above-mentioned scheme is waken up in itself sub-clustering within the preset time cycle in turn using the leader cluster node in sub-clustering Other wireless sensor nodes, so that other wireless sensor nodes being waken up acquire monitoring number in corresponding wake-up period It is sent to the leader cluster node according to and by collected monitoring data, then is received in the corresponding time cycle certainly by the leader cluster node The monitoring data of other wireless sensor nodes transmission being waken up in status cluster simultaneously count the received monitoring data of institute According to corresponding base-station node is sent to after fusion, due to waking up other wireless sensor nodes in sub-clustering within a time cycle Point is monitored the acquisition of data in turn, therefore can save the energy consumption of wireless sensor node, extends wireless sensor node The duty cycle of point, thus the energy consumption of wireless sensor network can be reduced, the life cycle of prolonging wireless sensor network.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for For those of ordinary skill in the art, without any creative labor, it can also be obtained according to these attached drawings His attached drawing.
Fig. 1 is a kind of structural schematic diagram of wireless sensor network system of the embodiment of the present invention；
Fig. 2 is a kind of flow diagram of the data transmission method of wireless sensor network of the embodiment of the present invention；
Fig. 3 is the schematic diagram of more member's sub-clustering mechanism in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.Related directionality instruction in the embodiment of the present invention (such as upper and lower, left and right, It is forward and backward etc.) it is only used for the relative positional relationship explained under a certain particular pose (as shown in the picture) between each component, movement feelings Condition etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
As stated in the background art, wireless sensor network is usually to provide energy by the minicell on sensor node, In face of minicell finite energy and operates in energy in severe or even dangerous natural environment and be difficult to the problem of supplementing, battery energy The Expenditure Levels of amount play a decisive role to whether node can play a role.Therefore, how to reduce and balanced node energy consumption, extension Network lifecycle becomes the key of application of higher wireless sensor network.
Technical solution of the present invention is waken up in turn within the preset time cycle from status by the leader cluster node in sub-clustering Other wireless sensor nodes in cluster, so that other wireless sensor nodes being waken up acquire in corresponding wake-up period Collected monitoring data are simultaneously sent to the leader cluster node by monitoring data, then receive corresponding week time by the leader cluster node Monitoring data that other wireless sensor nodes for being waken up in itself interim sub-clustering are sent and by the received monitoring data of institute It is sent to corresponding base-station node after carrying out data fusion, due to waking up other wireless biographies in sub-clustering within a time cycle Sensor node is monitored the acquisition of data in turn, therefore can save the energy consumption of wireless sensor node, extends wireless pass The duty cycle of sensor node, thus the energy consumption of wireless sensor network can be reduced, the life of prolonging wireless sensor network Period.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this The specific embodiment of invention is described in detail.
In order to make it easy to understand, the structure first to the wireless sensor network system in the embodiment of the present invention is carried out below It introduces.
Fig. 1 is a kind of structural schematic diagram of wireless sensor network system of the embodiment of the present invention.Referring to Fig. 1, Yi Zhongwu Line sensor network system, can specifically include multiple sub-clusterings 10 and the base station being correspondingly arranged saves at 20 points.Each sub-clustering 10 includes 111~11N of leader cluster node 101 and other wireless sensor node (or being ordinary node).Wherein, the cluster in each sub-clustering 10 Head node 101 is coupled with 111~11N of other wireless sensor nodes in itself sub-clustering respectively, the cluster head in each sub-clustering 10 111~11N of ordinary node in node 101 and sub-clustering is also coupled with the base-station node 20 being correspondingly arranged respectively.
In specific implementation, when disposing wireless sensor node, can in radio sensor network monitoring region with Machine disposes corresponding leader cluster node 101 and N number of 111~11N of ordinary node.Wherein, each 111~11N of ordinary node can be true Determine the position of oneself, and after the completion of network deployment, 111~11N of ordinary node believes to the position that base-station node 20 sends oneself Breath.The position of 111~11N of ordinary node in the available cluster of leader cluster node 101, and all nodes after the completion of deployment no longer It is mobile.
The working principle of the wireless sensor network system described in Fig. 1 is described below.
Fig. 2 is a kind of flow diagram of the data transmission method of wireless sensor network of the embodiment of the present invention.Referring to A kind of Fig. 2, data transmission method of wireless sensor network, can specifically include following step:
Step S201: the leader cluster node in sub-clustering wakes up other nothings in itself sub-clustering in turn within the preset time cycle Line sensor node.
In an embodiment of the present invention, the wireless sensor node in the wireless sensor network uses more member nodes Sub-clustering mechanism, i.e. ordinary node can be according to itself positions between leader cluster node, while being divided into more than one point In cluster.Compared with only only belonging to the single node sub-clustering mechanism an of sub-clustering using each ordinary node, data can be effectively reduced Redundancy.
Referring to Fig. 3, ordinary node A had both belonged to sub-clustering 1 and has also belonged to sub-clustering 2, the i.e. common node of sub-clustering 1 and sub-clustering 2, then general The degree of membership of logical node A is 2, and the degree of membership of ordinary node B and ordinary node C are 1, general because ordinary node A is common node Logical node A and ordinary node B, the covering area overlapping degree of ordinary node C are high, then when ordinary node A works, it is common to save Point B, common C may be at dormant state, by comparing the communication distance of ordinary node A and the leader cluster node of sub-clustering 1 and sub-clustering 2 The collected data of ordinary node A are sent to the leader cluster node of sub-clustering 1 or sub-clustering 2 by distance, are led between sub-clustering 1 and sub-clustering 2 It crosses ordinary node (or being common node) A to cooperate with each other, it is possible to reduce redundant data, therefore the cluster of sub-clustering 1 or sub-clustering 2 Head node would not receive a large amount of redundant data, to reduce data redundancy.
In specific implementation, for using the ordinary node in the sub-clustering of more member's sub-clustering mechanism, in order to realize point The wake-up in turn of ordinary node in cluster reduces data redudancy, and the leader cluster node can be first in the corresponding time cycle Corresponding priority is respectively set for other wireless sensor nodes in itself sub-clustering, according still further to set priority orders Other wireless sensor nodes of corresponding priority are waken up in turn.
In an embodiment of the present invention, be respectively set for other wireless sensor nodes in itself sub-clustering it is corresponding excellent When first grade, the leader cluster node can be whether to be based on other wireless sensor nodes in itself sub-clustering in the corresponding time cycle The information of the working condition in common node, remaining capacity and a upper wake-up period to belong to more than two sub-clusterings, for certainly Corresponding priority is respectively set in other wireless sensor nodes in status cluster.
Specifically, leader cluster node is the ordinary node P in wireless sensor networkiTwo class priority are set up, first is excellent First grade Qi1, the second priority Qi2, for each sensor node Pi, the first priority QiThe 1 and second priority Qi2 determine Total priority Q of the nodei, it may be assumed that
Qi=Qi1+Qi2 (1)
Wherein, the first priority Qi1 purpose is to select dump energy more as far as possible, simultaneously as affiliated sub-clustering to the greatest extent may be used Node more than energy, such node are more due to dump energy, so that it may and it is more to complete monitoring task, simultaneously because degree of membership Height, can have more nodes to be in the working condition of suspend mode during its work, and energy saving extends network life week Phase.Node PiThe first priority Qi1 determines before every wheel work starts, and is a static value:
Qi1=Eri/Eti+Wi (2)
Wherein, EriIndicate i-th of wireless sensor node PiCurrent residual electricity, EtiIndicate i-th of wireless sensor Node PiThe consumed total electricity within a time cycle, WiIndicate i-th of wireless sensor node PiOf affiliated sub-clustering Number.
Second priority Qi2 purpose is in order to avoid selecting to monitor being in for the same area in continuous monitoring cycle The node of working condition, at the same time it is wished that in current monitoring cycle selection and the in running order monitoring of a upper monitoring cycle Node of the node in different clusters.Node PiThe second priority Qi2 initial values are 0, i.e. Qi2=0；Second priority Qi2 change in every wheel monitoring cycle with the selection of monitoring node, when a node is selected as the currently monitored period After monitoring node, the second priority reduce, avoid lower bout reselection it；Meanwhile with its in the same cluster of the node He also reduces the second priority of node, and lower bout selection is avoided to monitor the in running order section of the same area with upper bout Point, it may be assumed that
Qi2=Qi2′-1 (3)
Wherein, Qi2 ' indicate i-th of wireless sensor node in the second priority of previous wake-up period.
Node PiThe first priority QiThe 1 and second priority Qi2 combine, common to determine node PiTotal priority Qi, Pass through QiHeight adjust node PiWorking condition, QiHigh node is in running order；QiLow node is in suspend mode shape State reduces energy consumption；All sensor node P in networkiFinal working method be according to node PiTotal priority QiCome true Fixed, according to node PiPriority, adjust node PiWorking condition extend Network morals to reduce energy consumption.
Step S202: other wireless sensor nodes being waken up acquire monitoring data in corresponding wake-up period and will Collected monitoring data are sent to the leader cluster node.
In specific implementation, when being provided with the priority of ordinary node in sub-clustering, the lower section of priority in sub-clustering Point carries out suspend mode under the control of leader cluster node, other ordinary nodes are then normally carried out work, i.e. acquisition monitoring data and by institute The monitoring number of acquisition sends data to respective leader cluster node.
Step S203: other being waken up that the leader cluster node receives in the corresponding time cycle in itself sub-clustering wirelessly pass The monitoring data of sensor node transmission simultaneously will be sent to corresponding base-station node after the received monitoring data progress data fusion of institute.
In specific implementation, within the corresponding time cycle, the ordinary node being waken up sends out collected monitoring data Corresponding leader cluster node is given, leader cluster node receives the ordinary node being waken up in the corresponding time cycle in corresponding wake-up period Interior collected monitoring data simultaneously carry out data fusion, i.e., after rejecting redundancy, then the valid data after simplifying are sent to Base-station node reduces the data volume transmitted in network so as to be effectively removed redundant data, eliminates wireless sensor network In there is data production and data consumption imbalance, be finally reached reduction network energy consumption, realize and extend network life week The target of phase.
In an embodiment of the present invention, it in order to further increase the accuracys of data, is carried out by received data Before data fusion, the leader cluster node is not waken up by being within the corresponding time cycle to other wireless sensor nodes The monitoring data of period carry out prediction completion, not only carry out data fusion operation to existing node data, it is also contemplated that suspend mode section The missing data of point carries out fusion treatment to two parts data, thus advantageously ensure that the integrality and accuracy of network data, Promote network performance.
In an embodiment of the present invention, the leader cluster node by other wireless sensor nodes in the corresponding time cycle When the interior monitoring data in during not being waken up carry out prediction completion, calculated using the missing data completion based on spatial coherence The missing data of the suspend mode node of method estimation carries out mixing operation.Specifically:
Assuming that a certain node N in wireless sensor networkiShortage of data during suspend mode, node NiThere is m neighbours' section Point, is denoted as N respectively1, N2..., Nm.In the present invention, we will be by NiNeighbor node constitute collection be collectively referred to as with NiCentered on Cluster is denoted as N (i)={ N1..., Nm}.Since the nodal distance of same cluster is closer, so NiIt is in together in a cluster with it Node Nj, Nj∈ N (i) has certain relevance, and NiNeighbor node between also have relevance, i.e.,NiWith NkPerception data there are spatial coherences.Therefore, if number of the node Ni during suspend mode According to missing, it can be estimated by other node datas in same cluster.Generally speaking, centered on node Ni Several nodes regard a sub-clustering as, and the node N of suspend mode is estimated with the perception data of other nodes in same sub-clusteringiNumber According to, it may be assumed that
yit=α0+α1y1t+α2y2t+α3y3t+...+αmymt+βt (1)
Wherein, yitIt is wireless sensor node NiIn the data of moment t, yktIt is wireless sensor node Nk(Nk∈N(i)) In the data of t moment, αkCorrespond to yktPartial correlation coefficient, βtFor preset error term.
In formula (1), αkReflect yktTo yitInfluence degree, wherein k={ 1,2 ..., m }.Clearly for node Missing values of the Ni during suspend mode can be evaluated whether out by formula (1).
According to multivariate regression models computational theory, before application formula (1), datum is organized in selection h (h-m >=2) first According to { yij, y1j..., ymj, j ≠ t returns partial correlation coefficient α k as training sample, using training sample, obtains it EstimatorWithα in replacement formula (1)k, it is available:
Wherein,It is yitEstimated value, yktIt is node NkIn the real observation value of t moment, k={ 1,2 ..., m }.It is aobvious So, for node NiThe missing values y of t at any timeit, can be found out with formula (2).Estimated valueWith actual value yitBetween Error can indicate with e1, i.e.,
It, can be by the h group perception data vector Y=(y of node Ni when estimating α ki1..., yih) T expression, By node NiThe perception data of the neighbor node of place cluster indicates that X is specifically expressed as follows with matrix X:
Therefore, αkEstimator can be expressed as follows with formula (3):
Wherein,Indicate partial correlation coefficient estimated value vector,Indicate partial correlation coefficient αkEstimated value, vector Y indicate without Line sensor node NiH group perception data vector, X indicate wireless sensor node NiThe perception of the neighbor node of place cluster Data matrix, m indicate wireless sensor node NiThe number of the neighbor node of place cluster.
In conclusion being estimated to obtain estimated value to partial correlation coefficient α first with formula (3)Then willIt substitutes into Node Ni is obtained in formula (1) in the estimated data value of moment t.
The embodiment of the invention also provides a kind of computer readable storage mediums, are stored thereon with computer instruction, described The step of wireless sensor network data transmission method is executed when computer instruction is run.Wherein, the wireless biography Sensor network data transmission method refers to the description of preceding sections, repeats no more.
The embodiment of the invention also provides a kind of terminal, including memory and processor, energy is stored on the memory Enough computer instructions run on the processor, it is wireless described in execution when the processor runs the computer instruction The step of sensor network data transmission method.Wherein, the wireless sensor network data transmission method refers to aforementioned Partial description, repeats no more.
Using the above scheme in the embodiment of the present invention, by the leader cluster node in sub-clustering in preset time cycle lubrication groove Stream wakes up other wireless sensor nodes in itself sub-clustering, so that other wireless sensor nodes being waken up are called out corresponding Collected monitoring data are simultaneously sent to the leader cluster node by period interior acquisition monitoring data of waking up, then are connect by the leader cluster node It receives the monitoring data that other wireless sensor nodes being waken up in the corresponding time cycle in itself sub-clustering are sent and will be connect The monitoring data of receipts are sent to corresponding base-station node after carrying out data fusion, due to waking up in sub-clustering within a time cycle Other wireless sensor nodes be monitored the acquisitions of data in turn, therefore the energy that can save wireless sensor node disappears Consumption, extends the duty cycle of wireless sensor node, thus can reduce the energy consumption of wireless sensor network, extends wireless sensing Device Network morals.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, the present invention Claimed range is delineated by the appended claims, the specification and equivalents thereof from the appended claims.

Claims (7)

1. a kind of wireless sensor network system, which is characterized in that the wireless sensor and actor networks include multiple sub-clusterings and base station Node；Each sub-clustering includes leader cluster node and other multiple wireless sensor nodes；The leader cluster node respectively with itself sub-clustering Interior other wireless sensor nodes coupling, and coupled with the base-station node being correspondingly arranged；
Leader cluster node in sub-clustering, suitable for waking up other wireless sensors in itself sub-clustering in turn within the preset time cycle Node；
Other wireless sensor nodes being waken up are suitable for acquiring monitoring data and will be collected in corresponding wake-up period Monitoring data are sent to the leader cluster node；
The leader cluster node, other wireless sensor nodes being waken up being further adapted for receiving in the corresponding time cycle in itself sub-clustering The monitoring data of point transmission simultaneously will be sent to corresponding base-station node after the received monitoring data progress data fusion of institute.
2. wireless sensor network system according to claim 1, which is characterized in that the leader cluster node is suitable for right The time cycle answered is that corresponding priority is respectively set in other wireless sensor nodes in itself sub-clustering；According to set Priority orders wake up other wireless sensor nodes of corresponding priority in turn.
3. wireless sensor network system according to claim 2, which is characterized in that the leader cluster node is suitable for right Whether it based on other wireless sensor nodes is belong to more than two sub-clusterings public that the time cycle answered is in itself sub-clustering Working condition in node, remaining capacity and a upper wake-up period is other wireless sensor nodes difference in itself sub-clustering Corresponding priority is set.
4. wireless sensor network system according to claim 3, which is characterized in that the leader cluster node is suitable for using Following formula is that corresponding priority is respectively set in other wireless sensor nodes in itself sub-clustering:
Qi=Qi1+Qi2, and:
Qi1=Eri/Eti+Wi；
Qi2=Qi2′-1；
Wherein, QiIndicate the priority of i-th of wireless sensor node, QiThe first of 1 i-th of wireless sensor node of expression is excellent First grade, EriIndicate the current residual electricity of i-th of wireless sensor node, EtiIndicate i-th of wireless sensor node at one Consumed total electricity, W in time cycleiIndicate the number of the affiliated sub-clustering of i-th of wireless sensor node, Qi2 indicate i-th Second priority of wireless sensor node, Qi2 ' indicate i-th of wireless sensor node in the second excellent of previous wake-up period First grade.
5. wireless sensor network system according to claim 1-4, which is characterized in that the leader cluster node, It is further adapted for before received data are carried out data fusion, other wireless sensor nodes is in during not being waken up Monitoring data carry out prediction completion.
6. wireless sensor network system according to claim 5, which is characterized in that the leader cluster node is suitable for using Following formula is in the monitoring data not being waken up in the period to other wireless sensor nodes and carries out prediction completion:
yit=α0+α1y1t+α2y2t+α3y3t+...+αmymt+βt；
Wherein, yitIt is wireless sensor node NiIn the data of moment t, yktIt is wireless sensor node Nk(Nk∈ N (i)) in t The data at quarter, αkCorrespond to yktPartial correlation coefficient, βtFor preset error term.
7. wireless sensor network system according to claim 6, which is characterized in that the leader cluster node is suitable for using Partial correlation coefficient α is calculated in following formulak:
And:
Y=(yi1..., yih)；
Wherein,Indicate partial correlation coefficient estimated value vector,Indicate partial correlation coefficient αkEstimated value, vector Y indicates wireless Sensor node NiH group perception data vector, X indicate wireless sensor node NiThe perception number of the neighbor node of place cluster According to matrix, m indicates wireless sensor node NiThe number of the neighbor node of place cluster.
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CN110490266A (en) * 2019-08-23 2019-11-22 北京邮电大学 A kind of sensing data uploads, Transducer-fault Detecting Method and device

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