CN106231644B - The wireless sensor network data transmission method of distribution line area video monitoring - Google Patents

The wireless sensor network data transmission method of distribution line area video monitoring Download PDF

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Publication number
CN106231644B
CN106231644B CN201610841426.9A CN201610841426A CN106231644B CN 106231644 B CN106231644 B CN 106231644B CN 201610841426 A CN201610841426 A CN 201610841426A CN 106231644 B CN106231644 B CN 106231644B
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wsn
transmission
node
nodes
distribution line
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CN106231644A (en
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徐志强
陆俊
肖振锋
周舟
陈剑
陈仲伟
王迟
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State Grid Corp of China SGCC
State Grid Hunan Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Hunan Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Hunan Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Hunan Electric Power Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
    • 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
    • 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

Abstract

The invention discloses a kind of wireless sensor network data transmission method of distribution line area video monitoring, including by region division subregion；WSN transmission nodes are arranged in each sub-regions；Calculate the energy ratio of current time WSN transmission node and WSN transmission nodes are classified accordingly；According to whether there is distribution line region intrusion abnormality selection WSN transmission nodes transfers signals to WSN receiving nodes, the wireless sensor network signal transmission of distribution line video surveillance is completed.The characteristics of present invention takes into full account the intrusion monitoring of distribution line region, transmission node is arranged using redundant fashion, it is ensured that the reliability of signal transmission；Path transmission is selected according to the size of the dump energy of transmission node and transmitted data amount, the effectively reduction WSN network nodes average transmission power consumption on the basis of data transfer high efficiency and reliability is ensured, WSN distribution line video surveillance network transmission performances are improved, the life-span of WSN networks is greatly extended.

Description

The wireless sensor network data transmission method of distribution line area video monitoring
Technical field
Present invention relates particularly to a kind of wireless sensor network data transmission method of distribution line area video monitoring.
Background technology
With the development and the improvement of people's living standards of economic technology, electric energy has become must in people's production and life One of indispensable secondary energy sources.Therefore, it is reliable and stable be power system most important target.
Distribution line is the important component of Intelligent power distribution network, and path monitoring business is to ensure distribution network line safety The premise of operation, it is therefore necessary to build effective distribution line video surveillance communications network system.At present, what is be configured matches somebody with somebody Electric line region intrusion monitoring system is as shown in Figure 1：101 be distribution line shaft tower in figure, and 102 be distribution line, and 1 takes the photograph for WSN Picture head node (described WSN is the abbreviation of wireless sensor network), 2 be WSN transmission nodes, and 3 be WSN receiving nodes；In bar The WSN gateway that installation line influence is powered on tower installs multiple battery powered as WSN receiving nodes on distribution line WSN transmission nodes, for building WSN transmission paths；The region intrusion monitoring WSN that line influence is powered is installed on distribution line Image head node；The WSN regions for imaging head node are invaded and monitored by building effective data transfer path by WSN transmission nodes Information, WSN receiving nodes are transferred to periodically by WSN transmission nodes, and WSN receiving nodes have by the optical fiber of distribution line Region is invaded monitoring information and passes back to monitoring main website by transformer substation communication passage by line communication port, realizes long-range distribution line Region invades monitoring function.
The intrusion monitoring of distribution line region possesses the normal condition few business characteristic of abnormality more.The business is normal Under state, distribution line video surveillance point only need to periodically send the information of a mark normal condition to monitoring center, only There is the intact video images frame information for needing to return monitored area under abnormality to monitoring center.But existing WSN matches somebody with somebody It is typically to transmit monitored area video frame image property information cycle by WSN to save in electric line video surveillance transmission method Point is transferred to monitoring center, does not consider that above distribution line region intrusion monitoring business transmission feature and WSN network energy-savings are passed It is defeated to require, therefore because video requency frame data amount is big in transmitting procedure so that WSN node energies exhaust too fast, cause WSN distribution wires The problem of road video surveillance network performance is low.
The content of the invention
Effectively reduced on the basis of data transfer high efficiency and reliability is ensured it is an object of the invention to provide one kind The wireless sensor network data transmission method of the distribution line area video monitoring of network power consumption.
The wireless sensor network data transmission method for this distribution line area video monitoring that the present invention is provided, including Following steps：
S1. be already provided with the distribution line of WSN receiving nodes and WSN shooting head nodes, by WSN receiving nodes and The belt-like zone of WSN shooting head node connecting lines is divided into K sub-regions；
S2. N number of WSN transmission nodes are arranged in each sub-regions that step S1 is obtained；N is natural number；
S3., WSN transmission node energy ratio threshold value alph1 and alph2, and alph1 are set<alph2；Calculate current time The energy ratio of WSN transmission nodes；The energy ratio is defined as the ratio of node present energy and node primary power；
S4. according to the comparison knot of the energy ratio of the obtained WSN transmission nodes of step S3 and WSN transmission node energy ratio threshold values Fruit classifies WSN transmission nodes；
S5. determine whether there is distribution line region intrusion exception according to the WSN image frame informations for imaging head node acquisition State, and according to a class transmission node of WSN transmission nodes after the classification obtained in result of determination selection step S4, will judge to tie Fruit is transferred to WSN receiving nodes by a class transmission node of selection, completes the wireless sensor network of distribution line video surveillance Network signal is transmitted.
Belt-like zone is divided into K sub-regions described in step S1, to calculate subregion number K using following formula：
K=ceil (L/2R)
Ceil () is the function that rounds up in formula；L is the air line distance between WSN receiving nodes and WSN shooting head nodes； R is the transmission range radius of WSN transmission nodes.
Arrangement WSN transmission nodes described in step S2, are specially the arrangement for carrying out WSN transmission nodes in the following way：
A. a WSN central transmission node is arranged in the geographic center of the obtained every sub-regions of step S1；
B. centered on WSN central transmission nodes, using WSN central transmissions node sensing WSN receiving nodes direction as 0 ° just Direction, arranges X WSN auxiliary transmission node in a WSN in positive direction [- Q ° ,+Q °] region of heart transmission node；Q and X are Positive integer；
C. centered on WSN central transmission nodes, WSN cameras node direction is pointed to as 0 ° using WSN central transmissions node Negative direction, arranges Y WSN auxiliary transmission node in a WSN in negative direction [- W ° ,+W °] region of heart transmission node；W and Y are equal For positive integer.
Described Q is 45.
Described W is 45.
WSN transmission nodes are divided into three classes described in step S4, specially classified using following rule：
If 1) energy ratio >=alph2 of WSN transmission nodes, the WSN transmission nodes regard as high-energy node；
If 2) alph1<The energy ratio of WSN transmission nodes<Alph2, then the WSN transmission nodes regard as middle energy node；
If 3) energy ratio≤alph1 of WSN transmission nodes, the WSN transmission nodes regard as low energy node.
There is distribution line region intrusion abnormality in determining whether described in step S5, to be sentenced using following steps It is disconnected：
A. the pixel grayscale XOR progressive average that WSN shooting head nodes gather image is calculated using following formula：
X in formulaORFor pixel grayscale XOR progressive average；The pixel resolution of WSN shooting head node collection images is M ×N；fp(i, j) is the grey scale pixel value of the i-th row jth row point for the pth two field picture that WSN images head node collection；
B. setting area invades abnormality threshold value for C, and 0<C<1；Distribution wire whether there is according to following rule judgment Road region invades abnormality：
If 1. XOR>=C, then judge that distribution line region invades state as exception；
If 2. XOR<C, then judge distribution line region intrusion state to be normal.
WSN transmission node types are selected according to result of determination described in step S5, are specially to be selected according to following rule Take：
(1) if distribution line region intrusion state is abnormal, the WSN current image frames for imaging head node collection are passed through High-energy node-node transmission is to WSN receiving nodes；
(2) if distribution line region intrusion state is normal, it will indicate that the information source of distribution line normal operation passes through Middle energy node-node transmission is to WSN receiving nodes.
The wireless sensor network data transmission method for this distribution line area video monitoring that the present invention is provided, passes through Divide distribution line subregion and disposed according to oriented redundant fashion in distribution line node subregion in WSN nodal basis and built High-energy and the double transmission paths of middle energy, then video surveillance zone state is realized by pixel grayscale xor operation in picture frame Operation optimization transmission information source is calculated, the video frame image under path selection transmission abnormality state is finally distinguished according to result of determination Or the normal operation information source of circuit, therefore the present invention taken into full account the intrusion monitoring of distribution line region possess normal condition it is many and Abnormality is few, only needs to return intact video images frame data feature under abnormality, is arranged and transmitted using redundant fashion Node, it is ensured that the reliability of signal transmission；Selected respectively solely according to the size of the dump energy of transmission node and transmitted data amount Vertical path transmission, effectively reduction WSN network nodes average transmission consumes on the basis of data transfer high efficiency and reliability is ensured Can, WSN distribution line video surveillance network transmission performances are improved, the life-span of WSN networks is greatly extended.
Brief description of the drawings
Fig. 1 invades monitoring system structural representation for the distribution line region of prior art.
Fig. 2 is method flow schematic diagram of the invention.
Fig. 3 divides subregion schematic diagram for the distribution line belt-like zone of the present invention.
Fig. 4 is the oriented redundant deployment schematic diagram of WSN transmission node distribution line bandings of the invention.
Fig. 5 is the oriented redundant deployment top view of WSN transmission node distribution line bandings of the invention.
Fig. 6 is WSN camera node-node transmission data flowcharts of the invention.
Embodiment
It is illustrated in figure 2 flow chart of the method for the present invention：This distribution line area video monitoring that the present invention is provided Wireless sensor network data transmission method, comprises the following steps：
S1. be already provided with the distribution line of WSN receiving nodes and WSN shooting head nodes, by WSN receiving nodes and The belt-like zone of WSN shooting head node connecting lines is divided into K sub-regions：
Subregion number K is calculated using following formula：
K=ceil (L/2R)
Ceil () is the function that rounds up in formula；L is the air line distance between WSN receiving nodes and WSN shooting head nodes； R is the transmission range radius of WSN transmission nodes.
1 is that WSN images head node in the region division situation that K is 3 as after calculating as shown in Figure 3, figure, and 101 be distribution Overhead line structures, 102 be distribution line, and 3 be that WSN receives reception, and 21~23 be the subregion divided；Head node is imaged in WSN According to distance and the communications distance radius of the single transmission nodes of WSN between WSN receiving nodes, the banding of distribution line is passed Defeated region division is into 3 data forwarding WSN node subregions, respectively subregion 21, subregion 22 and subregion 23, then WSN It is 4 jumps through hop count that head node, which is imaged, to the data transfer route road of WSN receiving nodes.
S2. N number of WSN transmission nodes are arranged in each sub-regions that step S1 is obtained；Specially enter in the following way The arrangement of row WSN transmission nodes：
A. a WSN central transmission node is arranged in the geographic center of the obtained every sub-regions of step S1；
B. centered on WSN central transmission nodes, using WSN central transmissions node sensing WSN receiving nodes direction as 0 ° just Direction, arranges X WSN auxiliary transmission node in a WSN in positive direction [- Q ° ,+Q °] region of heart transmission node；Q and X are Positive integer；
C. centered on WSN central transmission nodes, WSN cameras node direction is pointed to as 0 ° using WSN central transmissions node Negative direction, arranges Y WSN auxiliary transmission node in a WSN in negative direction [- W ° ,+W °] region of heart transmission node；W and Y are equal For positive integer.
Preferably, the equal values of Q and W are that the equal values of 45, X and Y are 4.
It is the oriented redundant deployment schematic diagram of WSN transmission node distribution line bandings as shown in Figure 4：101 be distribution in figure Overhead line structures, 1 is that WSN images head node, and 3 be WSN receiving nodes, and 211 be WSN central transmission nodes, and 212 be that WSN is aided in Transmission node；Head node and peace are imaged being placed on distribution line as the WSN of distribution line video surveillance shooting head node Put on power transmission line shaft tower as in the belt-like zone of the WSN receiving nodes of WSN gateway, one is disposed in subregion geographic center WSN central transmission nodes；Secondly before the directions of rays of definition subregion WSN central transmissions node and WSN receiving node lines is To 0 degree of direction, it is backward 0 degree side to define subregion WSN central transmissions node and image the ray in head node line direction with WSN To；Then using subregion WSN central transmissions node as starting point, respectively to [- 45 degree, 45 degree] direction and subregion before subregion X=4 WSN auxiliary transmission node of redundant deployment in [- 45 degree, 45 degree] direction scope, is used as subregion WSN Centroids backward Forward direction neighbors and backward neighbors.
It is illustrated in figure 5 the oriented redundant deployment top view of WSN transmission node distribution line bandings：1 is WSN cameras in figure Node, 3 be WSN receiving nodes, and 201 be subregion schematic block, and 211 be WSN central transmission nodes, and 212 be WSN auxiliary transmissions Node.
S3., WSN transmission node energy ratio threshold value alph1 and alph2, and alph1 are set<alph2；Calculate current time The energy ratio of WSN transmission nodes；The energy ratio is defined as the ratio of node present energy and node primary power；
S4. according to the comparison knot of the energy ratio of the obtained WSN transmission nodes of step S3 and WSN transmission node energy ratio threshold values Fruit classifies WSN transmission nodes；
Specially classified using following rule：
If 1) energy ratio >=alph2 of WSN transmission nodes, the WSN transmission nodes regard as high-energy node；
If 2) alph1<The energy ratio of WSN transmission nodes<Alph2, then the WSN transmission nodes regard as middle energy node；
If 3) energy ratio≤alph1 of WSN transmission nodes, the WSN transmission nodes regard as low energy node.
S5. determine whether there is distribution line region intrusion exception according to the WSN image frame informations for imaging head node acquisition State：
Judged using following steps：
A. the pixel grayscale XOR progressive average that WSN shooting head nodes gather image is calculated using following formula：
X in formulaORFor pixel grayscale XOR progressive average；The pixel resolution of WSN shooting head node collection images is M ×N；fp(i, j) is the grey scale pixel value of the i-th row jth row point for the pth two field picture that WSN images head node collection；
B. setting area invades abnormality threshold value for C, and 0<C<1；Distribution wire whether there is according to following rule judgment Road region invades abnormality：
If 1. XOR>=C, then judge that distribution line region invades state as exception；
If 2. XOR<C, then judge distribution line region intrusion state to be normal；
According to a class transmission node of WSN transmission nodes after the classification obtained in result of determination selection step S4：
Specially chosen according to following rule：
(1) if distribution line region intrusion state is abnormal, the WSN current image frames for imaging head node collection are passed through High-energy node-node transmission is to WSN receiving nodes；
(2) if distribution line region intrusion state is normal, it will indicate that the information source of distribution line normal operation passes through Middle energy node-node transmission is to WSN receiving nodes.
Result of determination is transferred to WSN receiving nodes by a class transmission node of selection, distribution line video prison is completed The wireless sensor network signal transmission of survey.
It is above-mentioned WSN camera node-node transmission data flowcharts as shown in Figure 6.

Claims (6)

1. a kind of wireless sensor network data transmission method of distribution line area video monitoring, comprises the following steps：
S1. it is being already provided with the distribution line of WSN receiving nodes and WSN shooting head nodes, by WSN receiving nodes and WSN The belt-like zone of shooting head node connecting line is divided into K sub-regions；Described WSN is the abbreviation of wireless sensor network；
S2. N number of WSN transmission nodes are arranged in each sub-regions that step S1 is obtained；N is natural number；
S3., WSN transmission node energy ratio threshold value alph1 and alph2, and alph1 are set<alph2；Calculate current time WSN biography The energy ratio of defeated node；The energy ratio is defined as the ratio of node present energy and node primary power；
S4. will according to the comparative result of the energy ratio of the obtained WSN transmission nodes of step S3 and WSN transmission node energy ratio threshold values WSN transmission nodes are classified；WSN transmission nodes are divided into three classes, specially classified using following rule：
If 1) energy ratio >=alph2 of WSN transmission nodes, the WSN transmission nodes regard as high-energy node；
If 2) alph1<The energy ratio of WSN transmission nodes<Alph2, then the WSN transmission nodes regard as middle energy node；
If 3) energy ratio≤alph1 of WSN transmission nodes, the WSN transmission nodes regard as low energy node；
S5. determine whether there is distribution line region intrusion abnormality according to the WSN image frame informations for imaging head node acquisition, And signal transmission is carried out according to following rule：
(1) if distribution line region intrusion state is abnormal, the WSN current image frames for imaging head node collection are passed through into high energy Node-node transmission is measured to WSN receiving nodes；
(2) if distribution line region intrusion state is normal, it will indicate that the information source of distribution line normal operation passes through middle energy Node-node transmission is measured to WSN receiving nodes.
2. the wireless sensor network data transmission method of distribution line area video monitoring according to claim 1, its It is characterised by that belt-like zone is divided into K sub-regions described in step S1, to calculate subregion number K using following formula：
K=ceil (L/2R)
Ceil () is the function that rounds up in formula；L is the air line distance between WSN receiving nodes and WSN shooting head nodes；R is The transmission range radius of WSN transmission nodes.
3. the wireless sensor network data transmission method of distribution line area video monitoring according to claim 1 or 2, It is characterized in that the arrangement WSN transmission nodes described in step S2, are specially the cloth for carrying out WSN transmission nodes in the following way Put：
A. a WSN central transmission node is arranged in the geographic center of the obtained every sub-regions of step S1；
B. centered on WSN central transmission nodes, WSN receiving nodes direction is pointed to as 0 ° of positive direction using WSN central transmissions node, X WSN auxiliary transmission node is arranged in positive direction [- Q ° ,+Q °] region of heart transmission node in a WSN；Q and X are just whole Number；
C. centered on WSN central transmission nodes, WSN cameras node direction is pointed to as 0 ° of losing side using WSN central transmissions node To, in a WSN in negative direction [- W ° ,+W °] region of heart transmission node arrange Y WSN auxiliary transmission node；W and Y are just Integer.
4. the wireless sensor network data transmission method of distribution line area video monitoring according to claim 3, its It is 45 to be characterised by described Q.
5. the wireless sensor network data transmission method of distribution line area video monitoring according to claim 3, its It is 45 to be characterised by described W.
6. the wireless sensor network data transmission method of distribution line area video monitoring according to claim 1, its It is characterised by that determining whether described in step S5 has distribution line region intrusion abnormality, to be sentenced using following steps It is disconnected：
A. the pixel grayscale XOR progressive average that WSN shooting head nodes gather image is calculated using following formula：
<mrow> <msub> <mi>X</mi> <mrow> <mi>O</mi> <mi>R</mi> </mrow> </msub> <mo>=</mo> <mo>&amp;lsqb;</mo> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>M</mi> </munderover> <munderover> <mo>&amp;Sigma;</mo> <mrow> <mi>j</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>N</mi> </munderover> <msub> <mi>f</mi> <mi>p</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>,</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&amp;CirclePlus;</mo> <msub> <mi>f</mi> <mrow> <mi>p</mi> <mo>-</mo> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>,</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&amp;rsqb;</mo> <mo>/</mo> <mo>&amp;lsqb;</mo> <mi>M</mi> <mo>&amp;CenterDot;</mo> <mi>N</mi> <mo>&amp;rsqb;</mo> </mrow>
X in formulaORFor pixel grayscale XOR progressive average；The pixel resolution of WSN shooting head node collection images is M × N； fp(i, j) is the grey scale pixel value of the i-th row jth row point for the pth two field picture that WSN images head node collection；
B. setting area invades abnormality threshold value for C, and 0<C<1；Distribution line area whether there is according to following rule judgment Domain invades abnormality：
If 1. XOR>=C, then judge that distribution line region invades state as exception；
If 2. XOR<C, then judge distribution line region intrusion state to be normal.
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CN101917335A (en) * 2010-08-04 2010-12-15 华南理工大学 Route equalization method of multi-jump cooperative energy of body area network under condition of ensuring service quality
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Publication number Priority date Publication date Assignee Title
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CN102227118A (en) * 2011-06-10 2011-10-26 国网信息通信有限公司 Protection method and system of power transmission tower
CN102404555A (en) * 2011-11-28 2012-04-04 西安雷迪维护系统设备有限公司 Video monitoring system for monitoring boundary crossing of foreign matter in high voltage power transmission line

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