CN109115948A - Urban air pollution object concentration over-standard early warning system - Google Patents
Urban air pollution object concentration over-standard early warning system Download PDFInfo
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- CN109115948A CN109115948A CN201810827927.0A CN201810827927A CN109115948A CN 109115948 A CN109115948 A CN 109115948A CN 201810827927 A CN201810827927 A CN 201810827927A CN 109115948 A CN109115948 A CN 109115948A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
Abstract
The present invention provides urban air pollution object concentration over-standard early warning system, which includes sensing device and data processing and prior-warning device, and sensing device is used to acquire the air pollutant concentration data in region to be monitored；Data processing and prior-warning device are issued warning signal when air pollutant concentration data exceed given threshold to preset user terminal for analyzing air pollutant concentration data；The sensing device includes aggregation node and sensor node；Aggregation node and sensor node construct the wireless sensor network of sub-clustering type structure by Ad hoc mode, wherein select cluster head when constructing network topology from sensor node and carry out sub-clustering；The air pollutant concentration Data Concurrent that cluster head is configured as collecting the acquisition of cluster inner sensor node is sent to aggregation node；Aggregation node is configured as the air pollutant concentration data summarization that each cluster head is sent being sent to data processing and prior-warning device.
Description
Technical field
The present invention relates to air quality monitoring technical fields, and in particular to urban air pollution object concentration over-standard early warning system
System.
Background technique
It targetedly carries out air pollution prevention and control and administers, need to supervise air pollution spatial and temporal distributions in city
Control.It is too low generally in survey station density, be difficult to real-time measurement and from the point of view of the air pollutant concentration monitoring present situation of current city
Situation.
Summary of the invention
In view of the above-mentioned problems, the present invention provides urban air pollution object concentration over-standard early warning system.
The purpose of the present invention is realized using following technical scheme:
Provide urban air pollution object concentration over-standard early warning system, which includes sensing device and data processing and pre-
Alarm device, sensing device are used to acquire the air pollutant concentration data in region to be monitored；Data processing and prior-warning device are used for
Air pollutant concentration data are analyzed, it is whole to preset user when air pollutant concentration data exceed given threshold
End issues warning signal；The sensing device includes aggregation node and sensor node；Aggregation node and sensor node pass through
Ad hoc mode constructs the wireless sensor network of sub-clustering type structure, wherein selects cluster from sensor node when constructing network topology
Head simultaneously carries out sub-clustering；The air pollutant concentration Data Concurrent that cluster head is configured as collecting the acquisition of cluster inner sensor node is sent to remittance
Poly- node；Aggregation node is configured as the air pollutant concentration data summarization that each cluster head is sent being sent to data processing and pre-
Alarm device.
Preferably, the sensor node include sensor for monitoring the air pollutant concentration in region to be monitored and
For sensor signal to be converted to the signal adapter of corresponding air pollutant concentration data, the signal adapter and biography
Sensor connection；It further include the controller for controlling frequency acquisition, the controller is connect with sensor.
Preferably, the data processing and prior-warning device include comparative analysis module and warning module, the comparative analysis
Module exports comparison result for being compared air pollutant concentration data with given threshold；The warning module exists
The comparison result is that air pollutant concentration data issue warning signal when exceeding given threshold.
The invention has the benefit that being based on wireless sensor network technology, it can be realized and treat monitoring regional air dirt
The early warning of the auto-real-time monitoring and urban air pollution object concentration over-standard of object concentration is contaminated, it is convenient and efficient.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the structural representation of the urban air pollution object concentration over-standard early warning system of an illustrative embodiment of the invention
Block diagram；
Fig. 2 is the data processing of an illustrative embodiment of the invention and the structural schematic block diagram of prior-warning device.
Appended drawing reference:
Sensing device 1, data processing and prior-warning device 2, comparative analysis module 10, warning module 20.
Specific embodiment
The invention will be further described with the following Examples.
Fig. 1 is the structural representation of the urban air pollution object concentration over-standard early warning system of an illustrative embodiment of the invention
Block diagram.Referring to Fig. 1, the embodiment of the invention provides urban air pollution object concentration over-standard early warning system, which includes sensing
Device 1 and data processing and prior-warning device 2, sensing device 1 are used to acquire the air pollutant concentration data in region to be monitored；Number
According to processing and prior-warning device 2 for analyzing air pollutant concentration data, exceeds in air pollutant concentration data and set
It is issued warning signal when determining threshold value to preset user terminal.
Wherein, the user terminal can be tablet computer or mobile phone.
Wherein, the sensing device 1 includes aggregation node and sensor node；Aggregation node and sensor node pass through certainly
Organizational form constructs the wireless sensor network of sub-clustering type structure, wherein carries out sub-clustering to sensor node when constructing network topology
And choose cluster head；The air pollutant concentration Data Concurrent that cluster head is configured as collecting the acquisition of cluster inner sensor node is sent to convergence
Node；Aggregation node is configured as the air pollutant concentration data summarization that each cluster head is sent being sent to data processing and early warning
Device 2.
In a kind of mode that can be realized, the sensor node includes the air pollution for monitoring region to be monitored
The sensor of object concentration and signal adapter for sensor signal to be converted to corresponding air pollutant concentration data, institute
Signal adapter is stated to connect with sensor；It further include the controller for controlling frequency acquisition, the controller and sensor connect
It connects.
Fig. 2 is the data processing of an illustrative embodiment of the invention and the structural schematic block diagram of prior-warning device.In one kind
In the mode that can be realized, as shown in Fig. 2, the data processing and prior-warning device 2 include comparative analysis module 10 and early warning mould
Block 20, the comparative analysis module 10 export and compare for being compared air pollutant concentration data with given threshold
As a result；The warning module 20 is to issue early warning letter when air pollutant concentration data exceed given threshold in the comparison result
Number.
The above embodiment of the present invention is based on wireless sensor network technology, can be realized and treats monitoring region air pollutants
The early warning of the auto-real-time monitoring and urban air pollution object concentration over-standard of concentration, it is convenient and efficient.
In a kind of mode that can be realized, if each sensor node is no more than setting at a distance from corresponding cluster head in cluster
Communication distance threshold value Sσ, then directly communicated with corresponding cluster head；If with corresponding cluster head distance being more than the communication distance threshold value S of settingσ,
The corresponding closer neighbours' sensor node of cluster head of sensor node selection distance communicates, specifically:
(1) in the corresponding closer neighbours' sensor node of cluster head of distance, selector closes neighbours' sensor of path condition
Node alternately connecting node, is included into alternative connecting node set；
(2) sensor node selects the maximum neighbours' sensor node of current remaining in alternative connecting node set
It is communicated；
Wherein, the path condition are as follows:
In formula, OiIndicate sensor node i correspondence cluster head, ij indicate sensor node i apart from the closer neighbour of cluster head
Occupy j-th of neighbours' sensor node in sensor node；For j-th of neighbour sensor node and cluster head OiAway from
From SσFor the communication distance threshold value of the setting, niIt is sensor node i apart from the closer neighbours' sensor node number of cluster head
Amount.
Wherein, the other sensors node in sensor node i communication range is referred to as the neighbours of sensor node i
Sensor node.
The present embodiment sets the communication routing mechanism between sensor node and cluster head, in the communication routing mechanism, passes through
Distance determine sensor node whether with cluster head direct communication, can ensure sensor node acquisition air pollutant concentration number
According to being sent to cluster head reliable and stablely.
The present embodiment innovatively sets path condition, when so that being more than the communication distance threshold value of setting with cluster head distance
Sensor node when selecting next-hop, can be avoided selection apart from the farther away next-hop of cluster head, so as to effectively reduce
Air pollutant concentration data transmission delay, while reducing the air pollutants as caused by data flow interference in multi-hop transmission
The incidence of concentration data packet loss phenomenon.
In one embodiment, sensor node in air pollutant concentration data transmission procedure periodically calculate and
The caching for updating itself occupies variation degree, while updated caching is occupied the sensor that variation degree is sent to upper hop
Node；Neighbours' sensor node that sensor node real-time monitoring communicates with, when the caching for finding neighbours' sensor node
When occupying variation degree threshold value of the variation degree more than setting, sensor node reselects neighbours' sensor node and leads to
Letter.
Wherein, when setting initial caching occupy variation degree be 0, it is described caching occupancy variation degree calculation formula are as follows:
In formula, di(c) indicate that sensor node i occupies variation degree, z in the caching that the current period c moment calculatesi(c) it is
Air pollutant concentration data packet queue length of the sensor node i at the current period c moment in own cache space, zi
(air pollutant concentration data packet queue of c- Δ c) the sensor node i at the upper moment in period c in own cache space is long
Degree, Δ c are period interval time, zi,maxFor the initial cache size of sensor node i；U is that caching occupies variation degree influence
The factor, when the caching of the next-hop sensor node of sensor node i occupies the variation degree threshold value that variation degree is more than setting
When, u=0.1, otherwise u=0；
In formula,For sensor node i next-hop sensor node at a distance from corresponding cluster head, SσIt is described
The communication distance threshold value of setting；For the judgement value function of setting, whenWhen,WhenWhen,
The present embodiment sets sensor node to the route maintenance mechanism of cluster head, wherein setting caching occupies variation journey
The calculation formula of degree, which, which occupies variation degree, can preferably reflect next-hop sensor node to path between cluster head
Congestion Level SPCC.
Since the remaining cache space of a sensor node is too small or has large quantity of air pollutant concentration data packet to arrive
Up to when, the pressure of sensor node processes air pollutant concentration data packet will increased dramatically, air pollutant concentration data packet
It will overstock in the spatial cache of sensor node, cause certain congestion phenomenon.
Based on above-mentioned phenomenon, the present embodiment occupies variation degree by caching and measures this phenomenon severity to serve as
Index, when sensor node finds that the caching of communicated neighbours' sensor node occupies the variation journey that variation degree is more than setting
When spending threshold value, reselecting for next-hop node is carried out, can be effectively reduced air pollutant concentration data pack buffer quantity mistake
The processing pressure of more sensor nodes balances the load of each sensor node, is effectively reduced because of air pollutant concentration data
It is cached mostly and the probability of packet loss, and then improves the reliability of air pollutant concentration data transmission, to realize air pollutants
Good data basis is established in the exceeded early warning of concentration.
In a kind of optional mode, other neighbours sensing of the sensor node in the alternative connecting node set of oneself
In device node, reselects the maximum neighbours' sensor node of current remaining and communicate.
In one embodiment, the distance between cluster head and aggregation node be less than it is preset apart from lower limit when, cluster head is straight
It connects and is communicated with aggregation node；The distance between cluster head and aggregation node be more than it is preset apart from lower limit when, cluster head pass through multi-hop road
By mode air pollutant concentration data are sent to aggregation node, wherein when selecting next-hop, cluster head calculates each distance
The Superiority Value of the closer neighbours' cluster head of aggregation node, and therefrom selective advantage is worth maximum neighbours' cluster head as next-hop；
Set the calculation formula of Superiority Value are as follows:
In formula, YabFor b-th of Superiority Value apart from the closer neighbours' cluster head of aggregation node of cluster head a, dTFor the setting
Variation degree threshold value, db(c) current cache for described b-th apart from the closer neighbours' cluster head of aggregation node occupies variation journey
Degree, S (b, o) are described b-th distance apart from the closer neighbours' cluster head of aggregation node to aggregation node, SminFor the setting
Apart from lower limit, S (a, o) is distance of the cluster head a to aggregation node；v1、v2For the weight coefficient of setting.
The present embodiment is based on caching and occupies variation degree and distance factor, and the calculating for creatively setting Superiority Value is public
Formula, and accordingly propose cluster head to aggregation node communication routing mechanism, in the routing mechanism, between cluster head and aggregation node
Distance be more than it is preset apart from lower limit when, the maximum neighbours' cluster head of cluster-leader selected Superiority Value be used as next-hop, be conducive to improve sky
The reliability of gas pollutant concentration data transmission, and the overall length of air pollutant concentration data transfer path can be shortened as far as possible
Degree, saves the cost of air pollutant concentration data transmission, and then saves urban air pollution object concentration over-standard on the whole
The monitoring cost of early warning system.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (6)
1. urban air pollution object concentration over-standard early warning system, characterized in that filled including sensing device and data processing and early warning
It sets, sensing device is used to acquire the air pollutant concentration data in region to be monitored；Data processing and prior-warning device are used for sky
Gas pollutant concentration data are analyzed, and are sent out when air pollutant concentration data exceed given threshold to preset user terminal
Pre-warning signal out；The sensing device includes aggregation node and sensor node；Aggregation node and sensor node are by from group
The mode of knitting constructs the wireless sensor network of sub-clustering type structure, wherein selects cluster head simultaneously from sensor node when constructing network topology
Carry out sub-clustering；The air pollutant concentration Data Concurrent that cluster head is configured as collecting the acquisition of cluster inner sensor node is sent to convergence section
Point；Aggregation node is configured as the air pollutant concentration data summarization that each cluster head is sent being sent to data processing and early warning dress
It sets.
2. urban air pollution object concentration over-standard early warning system according to claim 1, characterized in that the sensor section
Point includes sensor for monitoring the air pollutant concentration in region to be monitored and for sensor signal to be converted to correspondence
Air pollutant concentration data signal adapter, the signal adapter connect with sensor；It further include being adopted for controlling
Collect the controller of frequency, the controller is connect with sensor.
3. urban air pollution object concentration over-standard early warning system according to claim 1 or 2, characterized in that the data
Processing and prior-warning device include comparative analysis module and warning module, and the comparative analysis module is used for air pollutant concentration
Data are compared with given threshold, and export comparison result；The warning module is air pollutants in the comparison result
Concentration data issues warning signal when exceeding given threshold.
4. urban air pollution object concentration over-standard early warning system according to claim 1, characterized in that each sensor in cluster
If node is no more than the communication distance threshold value S of setting at a distance from corresponding cluster headσ, then directly communicated with corresponding cluster head；If with right
Answering cluster head distance is more than the communication distance threshold value S of settingσ, the corresponding closer neighbours' sensor of cluster head of sensor node selection distance
Node is communicated.
5. urban air pollution object concentration over-standard early warning system according to claim 4, characterized in that sensor node exists
The caching for periodically calculating in air pollutant concentration data transmission procedure and updating itself occupies variation degree, while will more
Caching after new occupies the sensor node that variation degree is sent to upper hop；The neighbour that sensor node real-time monitoring communicates with
Sensor node is occupied, when the caching for finding neighbours' sensor node occupies the variation degree threshold value that variation degree is more than setting
When, sensor node reselects neighbours' sensor node and communicates.
6. urban air pollution object concentration over-standard early warning system according to claim 5, characterized in that delay when setting initial
Depositing and occupying variation degree is 0, and the caching occupies the calculation formula of variation degree are as follows:
In formula, di(c) indicate that sensor node i occupies variation degree, z in the caching that the current period c moment calculatesiIt (c) is sensing
Air pollutant concentration data packet queue length of the device node i at the current period c moment in own cache space, zi(c-Δ
C) air pollutant concentration data packet queue length of the sensor node i at the upper moment in period c in own cache space, Δ
C is period interval time, zI, maxFor the initial cache size of sensor node i；U is that caching occupies variation degree impact factor,
When the caching of the next-hop sensor node of sensor node i, which occupies variation degree, is more than the variation degree threshold value of setting, u=
0.1, otherwise u=0；
In formula,For sensor node i next-hop sensor node at a distance from corresponding cluster head, SσFor the setting
Communication distance threshold value；For the judgement value function of setting, whenWhen,WhenWhen,
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905666A (en) * | 2019-02-15 | 2019-06-18 | 苏州宏裕千智能设备科技有限公司 | A kind of image processing method and intelligent terminal |
| CN109951450A (en) * | 2019-01-18 | 2019-06-28 | 苏州迈荣祥信息科技有限公司 | A kind of information security collection and exchange method and system based on server |
| CN110149610A (en) * | 2019-05-20 | 2019-08-20 | 周明 | A kind of intelligent environment protection detection system |
| CN111380788A (en) * | 2020-04-30 | 2020-07-07 | 辽宁工程技术大学 | Dust monitoring system in air |
-
2018
- 2018-07-25 CN CN201810827927.0A patent/CN109115948A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951450A (en) * | 2019-01-18 | 2019-06-28 | 苏州迈荣祥信息科技有限公司 | A kind of information security collection and exchange method and system based on server |
| CN109905666A (en) * | 2019-02-15 | 2019-06-18 | 苏州宏裕千智能设备科技有限公司 | A kind of image processing method and intelligent terminal |
| CN110149610A (en) * | 2019-05-20 | 2019-08-20 | 周明 | A kind of intelligent environment protection detection system |
| CN111380788A (en) * | 2020-04-30 | 2020-07-07 | 辽宁工程技术大学 | Dust monitoring system in air |
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