CN105865722B - A kind of stationary monitoring and the dispositions method of moving emergency system - Google Patents
A kind of stationary monitoring and the dispositions method of moving emergency system Download PDFInfo
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Abstract
The present invention provides a kind of stationary monitoring and the dispositions method of moving emergency system, and the danger gas applied to rectangle industrial park leaks, including：Create and draw first gas diffusion model；Change wind direction, establish and draw second gas diffusion model；Determine the first intersection point, public domain, the first line segment and warning concentration point；Compare the gas concentration and warning concentration of the first intersection point, determine the first monitoring node and the second monitoring node；One first square is established as vertex using the first monitoring node or the second monitoring node；Using first square each vertex as starting point, outwards establish with first square diagonal point-blank and equal length it is multiple second square；And so on, until covering whole rectangle industrial park；Its excess-three vertex of first square, the vertex of each the second square are deployed as the 3rd monitoring node；Four vertex of rectangle industrial park are deployed as the 4th monitoring node.Cost of the present invention is low, has a wide range of application.
Description
Technical field
The present invention relates to emergency communication technical field, is applied to rectangle industrial park more particularly to one kind and dangerization gas occurs
Stationary monitoring and the dispositions method of moving emergency system when body leaks.
Background technology
Extensive use with wireless sensor network and the rise to communication network research under emergency situation, meet an urgent need logical
Believe that System Development is rapid, especially in harmful influence industry, due to produce, store, transport and using various chemical noxious gases and
Liquid, these materials once leak, then substantial amounts of pernicious gas may be discharged into air, concentration reaches after being mixed with air
Endangering threshold concentration value to human body, diffusion time reaches a certain level not only air can be polluted at the same time, it is often more important that such as
Residential block of the fruit near leaking area do not carry out gas leakage monitoring work and protected working then these gases can be to the mankind
Body cause fatal consequence, seriously affect the health of the mankind, thus efficiently monitor gas leakage situation with regard to most important,
This has also related to the research of sensor optimization deployment.
At present, sensor is disposed according to some standards, and whether really do not account for can play most efficient work
With.Moreover, into being whether minimum number of sensors is the problem of during the deployment of line sensor, should also be considered, whether expense
Reach minimum, how to have disposed sensor and can be only achieved best effect.
In general, the good sensor price of performance is also higher, and the weaker sensor price of performance can be than relatively low, warp
Investigation is crossed, the monitoring node as a wide range of monitoring harmful influence leakage region still selects price more better than relatively low, because
For that can realize effect of both economic minimum and effectiveness highest by efficient deployment.
At present, in many harmful influence gas leakage monitoring systems, the deployment of sensor is simply according in relevant regulations
Quantity is installed, and without in view of economy and high efficiency, while when a hazardous gas spillage source leaks, is not had
Optimal alarm function can be played in view of the sensor disposed originally during wind vector, that is, sensor is installed on anything
Position can either reach efficient monitoring function with minimum sensor.Moreover, also not effectively by sensor communication half
Footpath is combined in the deployment applied to sensor with dangerization gas Release and dispersion model.The present invention is to be based on wireless sensor network
Network, what the progress of a kind of combination external environment change of proposition lower gas diffusion model and sensor communication radius efficiently monitored
Stationary monitoring and the dispositions method of moving emergency system.Efficient monitoring can be realized by this method, reduce financial cost.
The content of the invention
In view of the foregoing deficiencies of prior art, it is an object of the invention to provide a kind of stationary monitoring and moving emergency
The dispositions method of system, when the leakage of dangerization gas occurs for solving rectangle industrial park in the prior art, the monitoring in garden
The problem of how sensor effectively being disposed in system.
In order to achieve the above objects and other related objects, the present invention provides a kind of stationary monitoring and the portion of moving emergency system
Arranging method, the danger gas applied to rectangle industrial park leak, the stationary monitoring and the dispositions method of moving emergency system
Including：Step S10, the weight gas cloud plumage parameter and environmental parameter leaked according to dangerization gas create and draw in coordinate system the
One gas diffusion model；Step S20, changes wind direction, establishes and second gas diffusion model is drawn in the coordinate system；Step
S30, determines the first intersection point in addition to origin of the first gas diffusion model and the second gas diffusion model and public
Region, and determine that the first line segment and gas concentration are warning concentration c in the public domainaWarning concentration point；Wherein,
First line segment is origin and the line of first intersection point；The gas concentration of first intersection point is c1；Step S40, than
The gas concentration c of first intersection point1With the warning concentration ca, according to first intersection point, warning concentration point and institute
State the first line segment and determine the first monitoring node and the second monitoring node；Step S50, with first monitoring node or described second
Monitoring node establishes one first square for vertex；Wherein, the described first square a line is parallel with first line segment；
Step S60, using each vertex of the described first square as starting point, outwards establishes and exists with the diagonal of the described first square
On straight line and equal length it is multiple second square；Again with the common point except the described first square and the second square
Each vertex of the square of each outer second is starting point, outwards continues to establish the diagonal with the corresponding second square
Point-blank and equal length multiple three squares, until the whole rectangle industrial park of covering；Step S70,
Its excess-three vertex of first square, each described second square and described 3rd square vertex be by
It is arranged to the 3rd monitoring node；Four vertex of the rectangle industrial park are also set to the 4th monitoring node.
Alternatively, the heavy gas cloud plumage beam wind of the heavy gas cloud plumage parameter including source of leaks is to half-breadth b0With weight gas cloud plumage height
h0；The environmental parameter includes wind direction, gas initial concentration c0, gas again initial density ρ0, wind speed v and Air Entrainment coefficient We。
Alternatively, in the step S10, the first gas diffusion model is to carry out calculating acquisition according to equation below
's：
Wherein, C represents the gas concentration at any point in the first gas diffusion model；H represents weight gas cloud plumage height；
ρaRepresent atmospheric density；G represents acceleration of gravity；X represents the axial distance of wind direction and source of leaks under weight gas cloud plumage；B attaches most importance to gas
The beam wind of plume is to half-breadth.
Alternatively, the change wind direction of the step S20 is that the corresponding wind direction of the first gas diffusion model is counterclockwise
θ angles are rotated, the second gas diffusion model is to calculate to obtain according to equation below：
Wherein, b*Represent the positive axis of the heavy gas cloud plumage half-breadth of the second gas diffusion model；b**Represent described second
The negative semiaxis of the heavy gas cloud plumage half-breadth of gas diffusion model.
Alternatively, for the coordinate system using source of leaks as origin, wind direction is X-axis, the beam wind of weight gas cloud plumage to half-breadth be Y-axis.
Alternatively, the step S40 includes：Step S41, determines midpoint, the first vertical line and second of first line segment
Vertical line, wherein, the abscissa at the midpoint is x00；First vertical line is perpendicular to first line segment by the midpoint
Straight line；Second vertical line is the straight line perpendicular to first line segment by the warning concentration point；Step S42, compares institute
State the gas concentration c of the first intersection point1With the warning concentration ca：If c1＞ ca, determine first vertical line and the public area
Two intersection points on the border in domain, and using two intersection points as first monitoring node and second monitoring node；Such as
Fruit c1＜ ca, then jump to step S43；Step S43, determines the second intersection point of second vertical line and first line segment, institute
The abscissa for stating the second intersection point is x01, the abscissa x at the midpoint00With the abscissa x of second intersection point01：If x01
＞ x00, determine two intersection points on the border of first vertical line and the public domain, and using two intersection points as described
First monitoring node and second monitoring node；If x01＜ x00, determine the side of second vertical line and the public domain
Two intersection points on boundary, and using two intersection points as first monitoring node and second monitoring node.
Alternatively, the stationary monitoring and the dispositions method of moving emergency system further include：First monitoring node,
Second monitoring node, multiple 3rd monitoring nodes and multiple 4th monitoring nodes are equipped with monitoring device.
Alternatively, the catercorner length of first square for the monitoring device monitoring twice of radius.
Alternatively, the monitoring device is sensor.
As described above, a kind of stationary monitoring of the present invention and the dispositions method of moving emergency system, by monitoring node and prison
The monitoring radius and gas diffusion model for surveying device are combined, the monitoring section of the optimal dangerization gas leakage for disposing different wind directions
Point, realizes and uses minimum monitoring node, the Monitoring Performance being optimal, controls cost；Also, each monitoring section of the present invention
Deployment between point, which can reach, covers all around industrial park.Moreover, the present invention is to the gas diffusion under different wind directions
Model is monitored the Optimization deployment of device, can be adapted for varying environment condition, has a wide range of application, can be according to a certain region
Long-term wind direction situation selects a kind of optimal deployment scheme.
Brief description of the drawings
Fig. 1 is shown as the flow of a kind of stationary monitoring disclosed by the embodiments of the present invention and the dispositions method of moving emergency system
Schematic diagram.
Fig. 2 is shown as the first of a kind of stationary monitoring disclosed by the embodiments of the present invention and the dispositions method of moving emergency system
Gas diffusion model and second gas diffusion model schematic diagram.
Fig. 3 is shown as determining for the dispositions method of a kind of stationary monitoring disclosed by the embodiments of the present invention and moving emergency system
The flow diagram of first monitoring node and the second monitoring node.
Fig. 4~Fig. 6 is shown as the dispositions method of a kind of stationary monitoring disclosed by the embodiments of the present invention and moving emergency system
First square establishment schematic diagram.
Fig. 7 is shown as the whole of a kind of stationary monitoring disclosed by the embodiments of the present invention and the dispositions method of moving emergency system
The monitoring node deployment schematic diagram of industrial park.
Component label instructions
S10~S70 steps
100 rectangle industrial parks
120 public domains
S41~S43 steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.It should be noted that in the case where there is no conflict, following embodiments and implementation
Feature in example can be mutually combined.
It should be noted that the diagram provided in following embodiments only illustrates the basic structure of the present invention in a schematic way
Think, then only the display component related with the present invention rather than component count, shape and size during according to actual implementation in schema
Draw, kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its assembly layout kenel
It is likely more complexity.
Embodiment
Present embodiment discloses a kind of stationary monitoring and the dispositions method of moving emergency system, applied to rectangle industrial park
Danger gas leakage.The monitoring range of monitoring device in monitoring system has been taken into full account, and when wind direction changes,
Can the monitoring device of original deployment play optimal alarm function, and present embodiment discloses a kind of efficiently monitor hazardous gas to let out
Leak and financial cost reaches a kind of minimum monitoring and endangers the stationary monitoring of gas diffusion and the Optimization deployment of moving emergency system
Method.
As shown in Figure 1, the curing monitoring of the present embodiment and the dispositions method of moving emergency system include：
Step S10, heavy the gas cloud plumage parameter and environmental parameter leaked according to dangerization gas are created and painted in coordinate system
First gas diffusion model processed：
The present embodiment be assuming that wind direction directly to blow to the safety zone of industrial park, and rectangle industrial park
The warning concentration of interior dangerization gas leakage is ca。
When wind direction is directly blows to the safety zone of industrial park, first gas diffusion model is：
With reference to formula
And formula
Calculate and obtain.Wherein, b0For weight gas cloud plumage beam wind at source of leaks, to half-breadth, unit is rice；B attaches most importance to the horizontal stroke of gas cloud plumage
Wind direction half-breadth, unit m；h0For the height of weight gas cloud plumage at leakage source point, unit m；ρ0It is again the initial density of gas, unit
For kg/m3；ρaIt is atmospheric density, unit kg/m3；V is to weigh gas cloud pinna rachis to rate of propagation, i.e. wind speed, unit m/s；X is weight
The axial distance of wind direction and source of leaks under gas cloud plumage, unit m；c0For the initial concentration of gas, unit m/s；H attaches most importance to gas cloud
The height of plumage, unit m；WeIt is Air Entrainment coefficient, different air are involved in difference, and it is also different that corresponding volume inhales coefficient.Establish
Using source of leaks as origin, wind direction as X-axis, coordinate system of the beam wind to half-breadth as Y-axis of weight gas cloud plumage, as shown in Fig. 2, by the
One gas diffusion model 1 is drawn in the coordinate system, and 100 represent rectangle industrial park.
For above-mentioned formula (1), (2) and (3), heavy the gas cloud plumage parameter and environmental parameter of the leakage of dangerization gas are known
's.Wherein, the heavy gas cloud plumage parameter of dangerization gas leakage includes：The heavy gas cloud plumage beam wind of source of leaks is to half-breadth b0With weight gas cloud plumage
Height h0.Environmental parameter includes：Wind direction, gas initial concentration c0, gas again initial density ρ0, wind speed v and Air Entrainment coefficient We
Etc..
Step S20, changes wind direction, establishes and second gas diffusion model is drawn in coordinate system：
In the present embodiment, it is that wind direction is rotated to θ angles counterclockwise to change wind direction, calculates second gas diffusion model.It is logical
Cross formula (1), (3) and equation below
Second gas diffusion model is calculated, wherein, b*Represent the heavy gas cloud plumage half-breadth of the second gas diffusion model
Positive axis；b**Represent the negative semiaxis of the heavy gas cloud plumage half-breadth of the second gas diffusion model.
By second gas diffusion model in coordinate system, the curve 2 in Fig. 2 is second gas diffusion model.
Step S30, determines first of the first gas diffusion model and the second gas diffusion model in addition to origin
Intersection point and public domain, and determine that the first line segment and gas concentration are warning concentration c in the public domainaAlarm
Concentration point；Wherein, first line segment is origin and the line of first intersection point；The gas concentration of first intersection point is
c1：
It is not difficult to find out there are two intersection points in first gas diffusion model 1 and second gas diffusion model 2 from Fig. 2：Origin
O and the first intersection point A.Wherein, the first intersection point passes through even vertical equation group：
Calculate and obtain.
Solve above-mentioned equation group and can obtain first gas diffusion model 1 and second gas diffusion model before and after wind vector
Coordinate (the x of 2 the first intersection point A in addition to origin O1, b1), by x1Bring formula (1) into, and can be calculated with reference to (2) and (3)
The gas diffusion concentration c of first intersection point A1。
Also, as shown in Fig. 2, there is a public domain in first gas diffusion model 1 and second gas diffusion model 2
120, it is the overlapping region of first gas diffusion model 1 and second gas diffusion model 2, i.e., by origin O, the first intersection point A, first
A part of area defined of the part of gas diffusion model 1 and second gas diffusion model 2.Distal end O and the first intersection point A it
Between line be the first line segment OA.
By warning concentration caBring formula (1) into, and combine (2) and (3), it is c that warning concentration, which can be calculated,aIn public affairs
Coordinate (the x of the warning concentration point B in region altogethera, ba)。
Step S40, the gas concentration c of first intersection point1With the warning concentration ca, according to first intersection point,
The warning concentration point and first line segment determine the first monitoring node and the second monitoring node.
As shown in figure 3, this step S40 specifically comprises the following steps：
Step S41, determines midpoint, the first vertical line and the second vertical line of the first line segment, wherein, the abscissa at the midpoint is
x00；First vertical line is the straight line perpendicular to first line segment by the midpoint；Second vertical line is described in process
The vertical straight line with first line segment of warning concentration point：
Determine the midpoint C of the first line segment OA, also, the abscissa that can obtain by calculating midpoint C is x00。
Also, the first vertical line perpendicular to the first line segment OA is done by midpoint C, is done vertically with by warning concentration point B
The second vertical line of one line segment OA.
Step S42, the gas concentration c of first intersection point1With the warning concentration ca：
If c1＞ ca, determine two intersection points on the border of first vertical line and the public domain, and by two intersection points
Respectively as first monitoring node and second monitoring node；
If c1＜ ca, then jump to step S43；
Step S43, determines the second intersection point of second vertical line and first line segment, the abscissa of second intersection point
For x01, the abscissa x at the midpoint00With the abscissa x of second intersection point01：
If x01＞ x00, determine first vertical line and two intersection points on the border of the public domain, and two are handed over
Point is respectively as first monitoring node and second monitoring node；
If x01＜ x00, determine second vertical line and two intersection points on the border of the public domain, and two are handed over
Point is respectively as first monitoring node and second monitoring node.
Work as c1＞ caWhen, the first monitoring node and the second monitoring node are as shown in figure 4, work as c1＜ caWhen, the first monitoring node
With the second monitoring node as shown in Figure 5 and Figure 6.
As shown in figure 4, work as c1＞ caWhen, there are two intersection points by the first vertical line of midpoint C and the border of public domain 120
H, H1, then be deployed as the first monitoring node and the second monitoring node by intersection point H and intersection point H1.
Work as c1＜ caWhen, crossing between the second vertical line and the first line segment OA of warning concentration point B has a second intersection point D, and the
The coordinate of two intersection point D is x01.Compare x01And x00：In x01＞ x00When, as shown in figure 5, by the first vertical line and public domain 120
Two the intersection points H and H1 on border are deployed as the first monitoring node and the second monitoring node.In x01＜ x00When, as shown in fig. 6, through
Crossing the second vertical line of warning concentration point B and the border of public domain 120 has two intersection points H and H1, and intersection point H and intersection point H1 are deployed as
First monitoring node and the second monitoring node.
Step S50, one first square is established using first monitoring node or second monitoring node as vertex；
Wherein, the described first square a line is parallel with first line segment：
In the present embodiment, the first square SQ1 is established by vertex of the first monitoring node H, its vertex is respectively：H、I、
J、K.As shown in figures 4-6, the side HI and JK of the first square SQ1 are parallel with the first line segment OA, and side HK and IJ are vertically with
One line segment OA.Also, in view of the monitoring range of monitoring device, the catercorner length of the first square SQ1 is arranged to monitor
2 times of device monitoring scope.
Step S60, using each vertex of the described first square as starting point, is outwards established and the described first square
Diagonal point-blank and equal length it is multiple second square；Again with except the described first square and the second square
Common point outside each vertex of each the second square be starting point, outwards continue to establish with it is second square diagonal
Line point-blank and equal length multiple three squares, until the whole rectangle industrial park of covering；
As shown in fig. 7, using vertex H, I, J, K of the first square SQ1 as starting point, multiple second squares are outwards established
The diagonal of SQ2, the diagonal of each the second square SQ2 and the first square SQ1 in a straight line, and cornerwise length
Degree is identical equal to the catercorner length of the first square SQ1；Then its excess-three vertex with the multiple second square SQ2 then,
The 3rd square SQ3 is established for starting point, pair of the diagonal of each the 3rd square SQ3 and the corresponding second square SQ2
Linea angulata in a straight line, and cornerwise length equal to the second square SQ2 catercorner length it is identical；And so on, until
Cover whole rectangle industrial park.
Step S70, its excess-three vertex of first square, each is described second square and the described 3rd just
Square vertex is to be arranged to the 3rd monitoring node；Four vertex of the rectangle industrial park are also set to the 4th prison
Survey node.
By its excess-three vertex I, J and K of the first square SQ1, each the second square SQ2 vertex, each
The vertex of 3rd square SQ3 is deployed as the 3rd monitoring node, also, also disposes four on four vertex of rectangle industrial park
Monitoring node, as the 4th monitoring node.As shown in fig. 7, monitoring node is marked with the origin of black.
The stationary monitoring of the present embodiment is additionally included in the first monitoring node, the second prison with the dispositions method of moving emergency system
Survey node, multiple 3rd monitoring nodes and multiple 4th monitoring nodes and be equipped with monitoring device.Monitoring device can be
Sensor, camera, infrared thermoviewer etc..
The step of various methods divide above, be intended merely to describe it is clear, can be merged into when realizing a step or
Some steps are split, are decomposed into multiple steps, as long as including identical logical relation, all protection domain in this patent
It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
In conclusion a kind of stationary monitoring of the present invention and the dispositions method of moving emergency system, by monitoring node and prison
The monitoring radius and gas diffusion model for surveying device are combined, the monitoring section of the optimal dangerization gas leakage for disposing different wind directions
Point, realizes and uses minimum monitoring node, the Monitoring Performance being optimal, controls cost；Also, each monitoring section of the present invention
Deployment between point, which can reach, covers all around industrial park.Moreover, the present invention is to the gas diffusion under different wind directions
Model is monitored the Optimization deployment of device, can be adapted for varying environment condition, has a wide range of application, can be according to a certain region
Long-term wind direction situation selects a kind of optimal deployment scheme.So the present invention effectively overcome it is of the prior art it is a variety of lack
Put and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (9)
1. a kind of stationary monitoring and the dispositions method of moving emergency system, the danger gas applied to rectangle industrial park leaks,
It is characterized in that, the stationary monitoring and the dispositions method of moving emergency system include：
Step S10, the weight gas cloud plumage parameter and environmental parameter leaked according to dangerization gas create and draw in coordinate system the
One gas diffusion model；
Step S20, changes wind direction, establishes and second gas diffusion model is drawn in the coordinate system；
Step S30, determines the first intersection point of the first gas diffusion model and the second gas diffusion model in addition to origin
And public domain, and determine that the first line segment and gas concentration are warning concentration c in the public domainaWarning concentration
Point；Wherein, first line segment is origin and the line of first intersection point；The gas concentration of first intersection point is c1；
Step S40, the gas concentration c of first intersection point1With the warning concentration ca, according to first intersection point, described
Warning concentration point and first line segment determine the first monitoring node and the second monitoring node；
Step S50, one first square is established using first monitoring node or second monitoring node as vertex；Its
In, the described first square a line is parallel with first line segment；
Step S60, using each vertex of the described first square as starting point, is outwards established diagonal with the described first square
Line point-blank and equal length it is multiple second square；Pushed up again with its excess-three of the second square each described
Point be starting point, outwards continue to establish the diagonal square with corresponding second point-blank and equal length multiple the
Three squares, until the whole rectangle industrial park of covering；
Step S70, its excess-three vertex of first square, each described second square and described 3rd square
Vertex be deployed as the 3rd monitoring node；Four vertex of the rectangle industrial park are deployed as the 4th monitoring node.
2. stationary monitoring according to claim 1 and the dispositions method of moving emergency system, it is characterised in that：The heavy gas
The heavy gas cloud plumage beam wind of plume parameter including source of leaks is to half-breadth b0With weight gas cloud plumage height h0；The environmental parameter include wind direction,
Gas initial concentration c0, gas again initial density ρ0, wind speed v and Air Entrainment coefficient We。
3. stationary monitoring according to claim 2 and the dispositions method of moving emergency system, it is characterised in that：The step
In S10, the first gas diffusion model is to carry out calculating acquisition according to equation below：
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Wherein, C represents the gas concentration at any point in the first gas diffusion model；H represents weight gas cloud plumage height；ρaTable
Show atmospheric density；G represents acceleration of gravity；X represents the axial distance of wind direction and source of leaks under weight gas cloud plumage；B attaches most importance to gas cloud plumage
Beam wind to half-breadth.
4. stationary monitoring according to claim 3 and the dispositions method of moving emergency system, it is characterised in that：The step
The change wind direction of S20 is that the corresponding wind direction of the first gas diffusion model is rotated counterclockwise θ angles, the second gas diffusion
Model is to calculate to obtain according to equation below：
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<msup>
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<mo>&lsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>gh</mi>
<mn>0</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>&rho;</mi>
<mn>0</mn>
</msub>
<mo>-</mo>
<msub>
<mi>&rho;</mi>
<mi>a</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>&rho;</mi>
<mi>a</mi>
</msub>
</mfrac>
<mo>&rsqb;</mo>
</mrow>
<mfrac>
<mn>1</mn>
<mn>2</mn>
</mfrac>
</msup>
<mfrac>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mi> </mi>
<mi>c</mi>
<mi>o</mi>
<mi>s</mi>
<mi>&theta;</mi>
<mo>+</mo>
<msup>
<mi>b</mi>
<mo>*</mo>
</msup>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&theta;</mi>
<mo>)</mo>
</mrow>
<mrow>
<msub>
<mi>vb</mi>
<mn>0</mn>
</msub>
</mrow>
</mfrac>
<mo>}</mo>
</mrow>
<mfrac>
<mn>2</mn>
<mn>3</mn>
</mfrac>
</msup>
<mo>;</mo>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mfenced open = "" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msup>
<mi>b</mi>
<mrow>
<mo>*</mo>
<mo>*</mo>
</mrow>
</msup>
<mi>cos</mi>
<mi>&theta;</mi>
<mo>-</mo>
<mi>x</mi>
<mi> </mi>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&theta;</mi>
<mo>=</mo>
<mo>-</mo>
<msub>
<mi>b</mi>
<mn>0</mn>
</msub>
<msup>
<mrow>
<mo>{</mo>
<mn>1</mn>
<mo>+</mo>
<mn>1.5</mn>
<msup>
<mrow>
<mo>&lsqb;</mo>
<mfrac>
<mrow>
<msub>
<mi>gh</mi>
<mn>0</mn>
</msub>
<mrow>
<mo>(</mo>
<msub>
<mi>&rho;</mi>
<mn>0</mn>
</msub>
<mo>-</mo>
<msub>
<mi>&rho;</mi>
<mi>a</mi>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>&rho;</mi>
<mi>a</mi>
</msub>
</mfrac>
<mo>&rsqb;</mo>
</mrow>
<mfrac>
<mn>1</mn>
<mn>2</mn>
</mfrac>
</msup>
<mfrac>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mi> </mi>
<mi>c</mi>
<mi>o</mi>
<mi>s</mi>
<mi>&theta;</mi>
<mo>+</mo>
<msup>
<mi>b</mi>
<mrow>
<mo>*</mo>
<mo>*</mo>
</mrow>
</msup>
<mi>s</mi>
<mi>i</mi>
<mi>n</mi>
<mi>&theta;</mi>
<mo>)</mo>
</mrow>
<mrow>
<msub>
<mi>vb</mi>
<mn>0</mn>
</msub>
</mrow>
</mfrac>
<mo>}</mo>
</mrow>
<mfrac>
<mn>2</mn>
<mn>3</mn>
</mfrac>
</msup>
<mo>;</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mfrac>
<mrow>
<mi>d</mi>
<mi>h</mi>
</mrow>
<mrow>
<mi>d</mi>
<mi>x</mi>
</mrow>
</mfrac>
<mo>=</mo>
<mfrac>
<msub>
<mi>W</mi>
<mi>e</mi>
</msub>
<mi>v</mi>
</mfrac>
<mo>;</mo>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein, b*Represent the positive axis of the heavy gas cloud plumage half-breadth of the second gas diffusion model；b**Represent the second gas
The negative semiaxis of the heavy gas cloud plumage half-breadth of diffusion model.
5. stationary monitoring according to claim 4 and the dispositions method of moving emergency system, it is characterised in that：The coordinate
Using source of leaks as origin, wind direction is X-axis for system, the beam wind of weight gas cloud plumage to half-breadth be Y-axis.
6. stationary monitoring according to claim 5 and the dispositions method of moving emergency system, it is characterised in that：The step
S40 includes：
Step S41, determines midpoint, the first vertical line and the second vertical line of first line segment, wherein, the abscissa at the midpoint is
x00；First vertical line is the straight line perpendicular to first line segment by the midpoint；Second vertical line is described in process
Straight line of the warning concentration point perpendicular to first line segment；
Step S42, the gas concentration c of first intersection point1With the warning concentration ca：
If c1＞ ca, determine first vertical line and two intersection points on the border of the public domain, and two intersection points are distinguished
As first monitoring node and second monitoring node；
If c1＜ ca, then jump to step S43；
Step S43, determines the second intersection point of second vertical line and first line segment, and the abscissa of second intersection point is
x01, the abscissa x at the midpoint00With the abscissa x of second intersection point01：
If x01＞ x00, determine first vertical line and two intersection points on the border of the public domain, and two intersection points are divided
Zuo Wei not first monitoring node and second monitoring node；
If x01＜ x00, determine second vertical line and two intersection points on the border of the public domain, and two intersection points are divided
Zuo Wei not first monitoring node and second monitoring node.
7. stationary monitoring according to claim 1 and the dispositions method of moving emergency system, it is characterised in that：The fixation
Monitor and further included with the dispositions method of moving emergency system：In first monitoring node, second monitoring node, Duo Gesuo
State the 3rd monitoring node and multiple 4th monitoring nodes are equipped with monitoring device.
8. stationary monitoring according to claim 7 and the dispositions method of moving emergency system, it is characterised in that：Described first
The catercorner length of square is twice of the monitoring radius of the monitoring device.
9. stationary monitoring according to claim 7 and the dispositions method of moving emergency system, it is characterised in that：The monitoring
Device is sensor.
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| CN107871025B (en) * | 2016-09-23 | 2020-03-31 | 中国科学院上海高等研究院 | Improved artificial bee colony algorithm-based gas sensor optimal deployment method and system |
| CN106501450B (en) * | 2016-10-18 | 2018-07-20 | 上海磐合科学仪器股份有限公司 | Vehicle-mounted atmosphere environment supervision method and system |
| CN106501451B (en) * | 2016-10-21 | 2018-10-19 | 中国科学院上海高等研究院 | A kind of disposition optimization method, system and the server of gas sensor |
| CN106645580B (en) * | 2016-12-26 | 2023-11-28 | 农业农村部环境保护科研监测所 | Large-scale pig farm gas pollutant monitoring method |
| CN107543900B (en) * | 2017-07-14 | 2019-09-10 | 天津大学 | Gas leakage monitoring system and localization method based on three-dimensional mobile sensor node |
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