CN105915597A - Voltage monitoring system based on wireless sensor network - Google Patents

Abstract

The invention provides a voltage monitoring system based on a wireless sensor network. The voltage monitoring system comprises a sensor network node and a monitoring central server. The sensor network node is configured at a monitored part and is connected with the monitoring central server through a local area network. The monitoring central server supplies data server or transmits early-warning information to a remote user through a network. The sensor network node comprises the components of a sensor network positioning module which performs positioning according to an ellipse positioning method, a sensor restraining module which is used for restraining cost and energy of a sensor, a self-powering module which utilizes a dye-sensitized photocell for supplying energy, and a data correction module. The voltage monitoring system has advantages of long service life and high monitoring precision. Furthermore the voltage monitoring system performs functions of increasing positioning speed of the sensor network node, restraining the cost and the energy of the sensor, and maximally saving monitoring cost.

Description

A kind of based on wireless sensor network voltage 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 voltage monitoring system System.

Background technology

In power system security is monitored, sensor is often distributed in the key point in power system or weak spot.These Measuring point position is relatively decentralized, and owing to the type difference of power system is often positioned in different positions.Along with the passage of monitoring time And the growth of sensing data volume, there is bigger difficulty in management, the tissue of sensing data at sensor, and for sensing The data that device 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, accuracy is higher based on wireless sensor network voltage monitoring system.

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

A kind of based on wireless sensor network voltage monitoring system, including sensor network nodes, LAN, monitoring center Server and short message alarm module, described sensor network nodes is arranged in tested position and passes through office with monitoring center server Territory net is connected, and monitoring center's server provides data, services by network to long-distance user or sends early warning information, it is possible to logical Crossing short message alarm module and send early warning note, 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 transacting 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 transacting 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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Minimum of a value 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 rapidly voltage Monitoring system；

2, by setting sensor constraints module, for expense and the energy of sensor are retrained, it is possible to electricity Pressure 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 photocell of energy supply under part to sensor, extend the service life of voltage monitoring system；

4, it is provided for the data correction module that the data of sensor collection are corrected, improves based on wireless sensing The monitoring accuracy of device network voltage 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 voltage monitoring system, saves including sensor network Point, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with prison Measured center server is connected by LAN, monitoring center's server by network to long-distance user provide data, services or send out Going out early warning information, it is possible to 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 connecting successively Task-driven submodule, locator module and the signal transacting 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 transacting 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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Minimum of a value 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 photocell 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 voltage monitoring system, saves including sensor network Point, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with prison Measured center server is connected by LAN, monitoring center's server by network to long-distance user provide data, services or send out Going out early warning information, it is possible to 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 connecting successively Task-driven submodule, locator module and the signal transacting 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 transacting 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}{\[{\Σ}_{l\∈L}c\left(l\right)+{\Σ}_{n\∈N}c\left(n\right)\]\[{\Σ}_{l\∈L}p\left(l\right)+{\Σ}_{n\∈N}p\left(n\right)\]}({\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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Minimum of a value 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 photocell 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 voltage monitoring system, saves including sensor network Point, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with prison Measured center server is connected by LAN, monitoring center's server by network to long-distance user provide data, services or send out Going out early warning information, it is possible to 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 connecting successively Task-driven submodule, locator module and the signal transacting 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 transacting 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}{\[{\Σ}_{l\∈L}c\left(l\right)+{\Σ}_{n\∈N}c\left(n\right)\]\[{\Σ}_{l\∈L}p\left(l\right)+{\Σ}_{n\∈N}p\left(n\right)\]}({\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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Value be 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 Minimum of a value is taken under conditions of meeting bandwidth, 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 photocell 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 voltage monitoring system, saves including sensor network Point, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with prison Measured center server is connected by LAN, monitoring center's server by network to long-distance user provide data, services or Send early warning information, it is possible to send early warning note by short message alarm module, it is characterized in that, described sensor network nodes bag Include:

(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 transacting 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 transacting 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}{\[{\Σ}_{l\∈L}c\left(l\right)+{\Σ}_{n\∈N}c\left(n\right)\]\[{\Σ}_{l\∈L}p\left(l\right)+{\Σ}_{n\∈N}p\left(n\right)\]}({\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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Minimum of a value 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers number According to 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 photocell 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 voltage monitoring system, saves including sensor network Point, LAN, monitoring center's server and short message alarm module, described sensor network nodes be arranged in tested position and with prison Measured center server is connected by LAN, monitoring center's server by network to long-distance user provide data, services or send out Going out early warning information, it is possible to 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 connecting successively Task-driven submodule, locator module and the signal transacting 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 transacting 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 The coordinate of one 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, [Σ_l∈Lc(l)+Σ_n∈NC (n)] it is expense restriction, [Σ_l∈Lp(l)+Σ_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 Minimum of a value 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 photocell；

Further, described data correction module and and signal are also included based on wireless sensor network voltage monitoring system Process the power detecting module that submodule connects；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent in monitoring Central server, arranges correction factorWherein T₀For local mean temperature, T is that sensor gathers 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 photocell 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 voltage monitoring system, including sensor network nodes, LAN, monitoring center's clothes Business device and short message alarm module, described sensor network nodes is arranged in tested position and passes through local with monitoring center server Net is connected, and monitoring center's server provides data, services by network to long-distance user or sends early warning information, it is possible to pass through Short message alarm module sends early warning note, 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 transacting 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 transacting 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 Minimum of a value 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 photocell.

One the most according to claim 1, based on wireless sensor network voltage monitoring system, is characterized in that, also includes number According to correcting module and the power detecting module that is connected with signal transacting submodule；

Described data correction module is for being corrected the data of sensor collection, and the data after correction are sent to monitoring center's clothes Business device, arranges correction factorWherein T₀For local mean temperature, T is that sensor is when gathering 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 the one group of data gathered by sensor, Y_xFor data after correction；

Described signal transacting 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 voltage monitoring system, is characterized in that, is gathering number According to front, the clock using TPSN algorithm to realize wireless sensor network synchronizes, when being specially local at node to be synchronized Clock adds clock jitter, and the clock completing node synchronizes.