CN105897895A - Power anomaly data monitoring system based on wireless sensor network - Google Patents

Abstract

The invention provides a power anomaly data monitoring system based on a wireless sensor network. The system comprises a sensor network node and a monitoring center server, wherein the sensor network node is arranged at a detected part and is connected with the monitoring center server via a local area network; the monitoring center server provides data service or gives early warning information to a remote user via the network; the sensor network node comprises a sensor network positioning module for positioning by adopting an ellipse location method, a sensor constraint module for constraints on the cost and the energy of the sensor, a self-power supply module for providing power by adopting a pigment sensitized-type photo cell and a data correction module. The system of the invention has the advantages that the service life is long; the monitoring precision is high; the sensor network node positioning speed is quickened; the cost and the energy of the sensor are constrained; and the monitoring cost is saved maximally.

Description

A kind of based on wireless sensor network electricity exception data monitoring system

Technical field

The present invention relates to electric power monitoring application, be specifically related to a kind of based on wireless sensor network electricity exception data Monitoring system.

Background technology

In power system security is monitored, sensor is often distributed in key point or the weak spot of power system.These are surveyed Point layout is relatively decentralized, and owing to the type difference of power system is often positioned in different positions.Along with monitoring the time passage with And the growth of sensing data volume, there is bigger difficulty, and for sensor in management, the tissue of sensing data at sensor The data that network node is collected must be the most meaningful in conjunction with its positional information in measuring coordinate system.

Additionally, the working sensor energy consumption that used of monitoring is big and is easily subject to the impact of the environment such as temperature, cause sensing The data precision measured by device reduces, and have impact on precision and the cost of monitoring further.

Summary of the invention

For the problems referred to above, the present invention provide a kind of can quickly alignment sensor network node, simultaneously to sensor Expense and energy carry out retraining, degree of accuracy is higher based on wireless sensor network electricity exception data monitoring system.

The purpose of the present invention realizes by the following technical solutions:

A kind of based on wireless sensor network electricity exception data monitoring system, including sensor network nodes, LAN, Monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position and services with monitoring center Device is connected by LAN, monitoring center's server by network to long-distance user provide data, services or send early warning believe Breath, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The invention have the benefit that

1, positioning sensor network nodes is the premise of accurate measurements, arranges the sensor using oval positioning mode Network location module, simplifies location Calculation, accelerates the locating speed of sensor network nodes, sets up electric power rapidly different The monitoring system of regular data；

2, by setting sensor constraints module, for expense and the energy of sensor are retrained, it is possible to electricity Power abnormal data saves monitoring cost on the premise of effectively monitoring to greatest extent；

3, after general sensor node uses a period of time, self-contained power depletion and lost efficacy, be arranged on illumination bar Continue the coloring matter sensitization type light cell of energy supply under part to sensor, extend the service life of electricity exception data monitoring system；

4, it is provided for the data correction module that the data of sensor acquisition are corrected, improves based on wireless sensing The monitoring accuracy of device network electric power abnormal data monitoring system.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limit to the present invention System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings Other accompanying drawing.

Fig. 1 is the connection diagram of each intermodule of the present invention.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1

Seeing Fig. 1, the present embodiment is a kind of based on wireless sensor network electricity exception data monitoring system, including sensor Network node, LAN, monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position And be connected by LAN with monitoring center server, monitoring center's server provides data to take by network to long-distance user It is engaged in or sends early warning information, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes Including:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition and persistently supplies to sensor The coloring matter sensitization type light cell of energy extends the service life of monitoring system；Sensor network route meets bandwidth, time delay, time delay Shake, packet loss constraints, f_b、f_d、f_dj、f_plValue be all 1, monitoring cost relative reduction 10%；According to sensor The correction factor m value of type selecting is 0.01, and monitoring accuracy improves 2% relatively.

Embodiment 2

Seeing Fig. 1, the present embodiment is a kind of based on wireless sensor network electricity exception data monitoring system, including sensor Network node, LAN, monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position And be connected by LAN with monitoring center server, monitoring center's server provides data to take by network to long-distance user It is engaged in or sends early warning information, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes Including:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition and persistently supplies to sensor The coloring matter sensitization type light cell of energy extends the service life of monitoring system；Sensor network route is unsatisfactory for bandwidth, time delay, prolongs Time shake, packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.2, monitoring cost relative reduction 15%；According to biography The correction factor m value of sensor type selecting is 0.02, and monitoring accuracy improves 3% relatively.

Embodiment 3

Seeing Fig. 1, the present embodiment is a kind of based on wireless sensor network electricity exception data monitoring system, including sensor Network node, LAN, monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position And be connected by LAN with monitoring center server, monitoring center's server provides data to take by network to long-distance user It is engaged in or sends early warning information, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes Including:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition and persistently supplies to sensor The coloring matter sensitization type light cell of energy extends the service life of monitoring system；Sensor network route is unsatisfactory for bandwidth, time delay, prolongs Time shake, packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.4, monitoring cost relative reduction 8%；According to sensing The correction factor m value of device type selecting is 0.03, and monitoring accuracy improves 5% relatively.

Embodiment 4

Seeing Fig. 1, the present embodiment is a kind of based on wireless sensor network electricity exception data monitoring system, including sensor Network node, LAN, monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position And be connected by LAN with monitoring center server, monitoring center's server provides data to take by network to long-distance user It is engaged in or sends early warning information, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes Including:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition and persistently supplies to sensor The coloring matter sensitization type light cell of energy extends the service life of monitoring system；Sensor network route is unsatisfactory for bandwidth, time delay, prolongs Time shake, packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.6, monitoring cost relative reduction 15%；According to biography The correction factor m value of sensor type selecting is 0.04, and monitoring accuracy improves 4% relatively.

Embodiment 5

Seeing Fig. 1, the present embodiment is a kind of based on wireless sensor network electricity exception data monitoring system, including sensor Network node, LAN, monitoring center's server and short message alarm module, described sensor network nodes is arranged in tested position And be connected by LAN with monitoring center server, monitoring center's server provides data to take by network to long-distance user It is engaged in or sends early warning information, it is possible to sending early warning note by short message alarm module, it is characterized in that, described sensor network nodes Including:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes connecting successively Task-driven submodule, locator module and the signal processing submodule connect, described task-driven submodule by LAN with Monitoring center's server connects, and task-driven submodule drives locator module to obtain self position of ad-hoc network of sensors node Confidence ceases, by self-position after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Information delivers to described monitoring center server；Described locator module uses oval positioning mode to position, and arranges biography during location The coordinate of sensor network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as first The coordinate of reference mode, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, Solving equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as sensor network Undirected cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Amount constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_pl's Value is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be full Minima is taken under conditions of foot straps width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it includes to continue energy supply to sensor under illumination condition Coloring matter sensitization type light cell；

Further, described data correction module is also included based on wireless sensor network electricity exception data monitoring system And the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is sensor acquisition data Time real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then The power information of sensor network nodes is sent to described monitoring center server.

Further, before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, specifically Synchronize plus clock jitter, the clock completing node for the local clock at node to be synchronized.

The present embodiment accelerates the locating speed of sensor network nodes, is arranged under illumination condition and persistently supplies to sensor The coloring matter sensitization type light cell of energy extends the service life of monitoring system；Sensor network route is unsatisfactory for bandwidth, time delay, prolongs Time shake, packet loss constraints, f_b、f_d、f_dj、f_plValue be all 0.9, monitoring cost relative reduction 12%；According to biography The correction factor m value of sensor type selecting is 0.04, and monitoring accuracy improves 4% relatively.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than the present invention is protected Protecting the restriction of scope, although having made to explain to the present invention with reference to preferred embodiment, those of ordinary skill in the art should Work as understanding, technical scheme can be modified or equivalent, without deviating from the reality of technical solution of the present invention Matter and scope.

Claims (3)

1. based on a wireless sensor network electricity exception data monitoring system, including sensor network nodes, LAN, prison Measured center server and short message alarm module, described sensor network nodes be arranged in tested position and with monitoring center's server Being connected by LAN, monitoring center's server provides data, services by network to long-distance user or sends early warning information, Also can send early warning note by short message alarm module, it is characterized in that, described sensor network nodes includes:

(1) location in sensors network module, is used for obtaining sensor network nodes own location information, and it includes being sequentially connected with Task-driven submodule, locator module and signal processing submodule, described task-driven submodule passes through LAN and monitoring Central server connects, and task-driven submodule drives locator module to obtain the self-position letter of ad-hoc network of sensors node Breath, by own location information after the own location information of the described signal processing submodule described ad-hoc network of sensors node of reading Deliver to described monitoring center server；Described locator module uses oval positioning mode to position, and sets sensor network during location The coordinate of network node is that (x, y), the coordinate of reference mode is (x_n,y_n), n=A, B, C, D, with (x_A,y_A) as the first reference node The coordinate of point, with (x_m,y_m) as the coordinate of the second reference mode, positioning equation is:

$\sqrt{{(x-x_m)}^2+{(y-y_m)}^2}+\sqrt{{(x-x_A)}^2+{(y-y_A)}^2}=d_{Am}$

Wherein, m=B, C, D, d_AmFor sensor network nodes to the first reference mode, the distance of the second reference mode and, solve Equation obtains the position of sensor；

(2) sensor constraints module, for retraining expense and the energy of sensor, is expressed as undirected by sensor network Cum rights connects figure W=(N, L), and N represents that number of network node, L represent two-way link collection, and constraint function is:

$f=\frac{1}{\[{\mathrm{\Σ}}_{l\∈L}c\left(l\right)+{\mathrm{\Σ}}_{n\∈N}c\left(n\right)\]\[{\mathrm{\Σ}}_{l\∈L}p\left(l\right)+{\mathrm{\Σ}}_{n\∈N}p\left(n\right)\]}({\mathrm{Af}}_b+{\mathrm{Bf}}_d+{\mathrm{Cf}}_{dj}+{\mathrm{Df}}_{pl})$

Wherein, f_b、f_d、f_dj、f_plBeing respectively bandwidth, time delay, delay jitter, packet loss penalty, A, B, C, D are respectively f_b、 f_d、f_dj、f_plWeight coefficient, [∑_l∈Lc(l)+∑_n∈NC (n)] it is expense restriction, [∑_l∈Lp(l)+∑_n∈NP (n)] it is energy Constraint；

When sensor network route meets bandwidth, time delay, delay jitter, packet loss constraints, f_b、f_d、f_dj、f_plValue It is all 1, other situations f_b、f_d、f_dj、f_plValue all in the range of (0,1), expense restriction and energy constraint should be at satisfied bands Minima is taken under conditions of width, time delay, delay jitter and packet loss constraint；

(3) self-powered module, for sensor energy supply, it pigment including continuing energy supply under illumination condition to sensor Sensitizing type light cell.

One the most according to claim 1, based on wireless sensor network electricity exception data monitoring system, is characterized in that, Also include data correction module and the power detecting module being connected with signal processing submodule；

Described data correction module is for being corrected the data of sensor acquisition, and the data after correction are sent to monitoring center's clothes Business device, arranges correction factorWherein T₀For local mean temperature, when T is sensor acquisition data Real time temperature, m is the correction factor selected according to sensor type, arranges the value of m in the range of (0,0.05), then

T≥T₀Time, updating formula is:

$Y_x=Y\·(1-{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

T ＜ T₀Time, updating formula is:

$Y_x=Y\·(1+{\mathrm{me}}^{-(\sqrt{\left|\frac{T-T_0}{T}\right|}+0.001)})$

Wherein, Y is by the one of sensor acquisition group of data, Y_xFor data after correction；

Described signal processing submodule reads the power information of the sensor network nodes of power detecting module detection, and then will pass The power information of sensor network node sends to described monitoring center server.

One the most according to claim 1, based on wireless sensor network electricity exception data monitoring system, is characterized in that, Before gathering data, the clock using TPSN algorithm to realize wireless sensor network synchronizes, and is specially at node to be synchronized Local clock plus clock jitter, the clock completing node synchronizes.