CN109140680A - The exceeded early warning system of harmful gas concentration - Google Patents
The exceeded early warning system of harmful gas concentration Download PDFInfo
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- CN109140680A CN109140680A CN201810863144.8A CN201810863144A CN109140680A CN 109140680 A CN109140680 A CN 109140680A CN 201810863144 A CN201810863144 A CN 201810863144A CN 109140680 A CN109140680 A CN 109140680A
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- node
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- gas concentration
- harmful gas
- cluster head
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention provides the exceeded early warning system of harmful gas concentration, which includes sensing device, control device, inlet end control circuit, executive device, display, alarm；The sensing device is for acquiring indoor harmful gas concentration data；The control device makes comparisons harmful gas concentration data with corresponding setting value, controls inlet end control circuit according to comparison result, with the opening and closing of air-valve in control room and outdoor air-valve；The control device exports warning message also according to comparison result；The executive device comprising the wireless transceiver being wirelessly connected with control device, the wireless transceiver are used to receive the warning message that the control device is sent；The display is connect with executive device and control device, for showing harmful gas concentration data and warning message；The alarm is connect with executive device, and executive device controls the alarm according to the warning message and alarms.
Description
Technical field
The present invention relates to gas monitoring techniques fields, and in particular to the exceeded early warning system of harmful gas concentration.
Background technique
In order to enjoy family's warmth and visual feeling, when finishing, often uses a large amount of ornament materials, and these materials
Material releases a large amount of polluted gas, such as formaldehyde, seriously threatens human health safety.Some pernicious gases be it is invisible, because
This cannot be observed with the naked eye so that when occur harmful gas concentration increase when, personnel cannot go and find out what's going in time and
Corresponding counter-measure is taken, and there is no effective indoor harmful gas monitoring system at present.
Summary of the invention
In view of the above-mentioned problems, the present invention provides the exceeded early warning system of harmful gas concentration.
The purpose of the present invention is realized using following technical scheme:
The exceeded early warning system of harmful gas concentration is provided, which includes sensing device, control device, inlet end control
Circuit, executive device, display, alarm；
The sensing device is for acquiring indoor harmful gas concentration data；
The control device makes comparisons harmful gas concentration data with corresponding setting value, according to comparison result control into
Gas end control circuit, with the opening and closing of air-valve in control room and outdoor air-valve；The control device is exported also according to comparison result and is reported
Alert information；
The executive device comprising the wireless transceiver being wirelessly connected with control device, the wireless transceiver are used for
Receive the warning message that the control device is sent；
The display is connect with executive device and control device, for showing harmful gas concentration data and alarm
Information；
The alarm is connect with executive device, and executive device controls the alarm according to the warning message and reported
It is alert.
Preferably, the sensing device includes aggregation node and multiple sensors for being used to acquire harmful gas concentration data
Node, sensor node selects cluster head by campaigning for operation when constructing network topology, and carries out sub-clustering according to the cluster head elected；
Cluster head is configured as the harmful gas concentration data summarization of cluster inner sensor node acquisition and is sent to aggregation node；Convergence section
Point is configured as the harmful gas concentration data that each cluster head summarizes being sent to the control device.
Preferably, the sensor node includes the sensor for acquiring the harmful gas concentration signal in region to be monitored
With the signal adapter for sensor signal to be converted to corresponding harmful gas concentration data, the signal adapter and biography
Sensor connection；It further include the controller for controlling frequency acquisition, the controller is connect with sensor；
Wherein, the sensor includes:
Nitrogen dioxide sensor, for detecting indoor nitrogen dioxide content value；
SO 2 sensor, for detecting indoor content of sulfur dioxide value；
Formaldehyde sensor, for detecting indoor formaldehyde content values；
Ozone sensor, for detecting indoor ozone content value.
Preferably, the control device includes database, comparative analysis unit and prewarning unit, the databases storage
There is the corresponding setting value；The comparative analysis unit is for comparing harmful gas concentration data with corresponding setting value
Compared with, and export comparison result；The prewarning unit is that harmful gas concentration data are defeated when exceeding setting value in the comparison result
Warning message out.
Preferably, the inlet end control circuit includes outdoor air-valve control circuit and indoor air-valve control circuit.
The invention has the benefit that indoor harmful gas concentration can be incuded in real time, shown by display,
And harmful gas concentration can be made comparisons with setting value, voluntarily in control room air-valve and outdoor air-valve opening and closing, guarantee indoor
Air quality maintains desirable level；And harmful gas concentration it is exceeded when can be with alert, can real-time ensuring inhabitation ring
The safety in border.
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 schematic block diagram of the exceeded early warning system of harmful gas concentration of an illustrative embodiment of the invention；
Fig. 2 is the structural schematic block diagram of the control device of an illustrative embodiment of the invention.
Appended drawing reference:
Sensing device 1, control device 2, inlet end control circuit 3, executive device 4, display 5, alarm 6, database
10, comparative analysis unit 20, prewarning unit 30.
Specific embodiment
The invention will be further described with the following Examples.
Fig. 1 is the structural schematic block diagram of the exceeded early warning system of harmful gas concentration of an illustrative embodiment of the invention.
Referring to Fig. 1, the embodiment of the invention provides the exceeded early warning system of harmful gas concentration, which includes sensing device 1, control dress
Set 2, inlet end control circuit 3, executive device 4, display 5, alarm 6.
Wherein, the sensing device 1 is for acquiring indoor harmful gas concentration data；
The control device 2 makes comparisons harmful gas concentration data with corresponding setting value, is controlled according to comparison result
Inlet end control circuit 3, with the opening and closing of air-valve in control room and outdoor air-valve；The control device 2 is defeated also according to comparison result
Warning message out；
The executive device 4 comprising the wireless transceiver being wirelessly connected with control device 2, the wireless transceiver are used
In the warning message for receiving the transmission of control device 2；
The display 5 is connect with executive device 4 and control device 2, for show harmful gas concentration data and
Warning message；
The alarm 6 is connect with executive device 4, executive device 4 according to the warning message control the alarm 6 into
Row alarm.
In a kind of mode that can be realized, the sensing device 1 includes aggregation node and multiple for acquiring harmful gas
The sensor node of bulk concentration data, sensor node selects cluster head by campaigning for operation when constructing network topology, and according to choosing
The cluster head enumerated carries out sub-clustering；It is concurrent that cluster head is configured as the harmful gas concentration data summarization for acquiring cluster inner sensor node
It send to aggregation node；Aggregation node is configured as the harmful gas concentration data that each cluster head summarizes being sent to the control device
2。
In a kind of mode that can be realized, the sensor node includes the pernicious gas for acquiring region to be monitored
The sensor of concentration signal and signal adapter for sensor signal to be converted to corresponding harmful gas 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；
Wherein, the sensor includes:
Nitrogen dioxide sensor, for detecting indoor nitrogen dioxide content value；
SO 2 sensor, for detecting indoor content of sulfur dioxide value；
Formaldehyde sensor, for detecting indoor formaldehyde content values；
Ozone sensor, for detecting indoor ozone content value.
Fig. 2 shows the structural schematic block diagrams of the control device 2 of an illustrative embodiment of the invention.One kind can be real
In existing mode, as shown in Fig. 2, the control device 2 includes database 10, comparative analysis unit 20 and prewarning unit 30, institute
It states and is stored with the corresponding setting value in database 10；The comparative analysis unit 20 be used for by harmful gas concentration data with
Corresponding setting value is compared, and exports comparison result；The prewarning unit 30 is that pernicious gas is dense in the comparison result
Degree exports warning message according to when exceeding setting value.
Preferably, the inlet end control circuit 3 includes outdoor air-valve control circuit and indoor air-valve control circuit.
The invention has the benefit that indoor harmful gas concentration can be incuded in real time, shown by display 5
Show, and harmful gas concentration can be made comparisons with setting value, voluntarily in control room air-valve and outdoor air-valve opening and closing, guarantee indoor
Air quality maintain desirable level；And harmful gas concentration it is exceeded when can with alert, can real-time ensuring live
The safety of environment.
In one embodiment, the sensor node selects cluster head by campaigning for operation, comprising:
(1) in aggregation node collection network each sensor node node degree and energy information, it is true according to the information of collection
The fixed relevant information for campaigning for operation is simultaneously broadcasted to each sensor node, and the relevant information includes sensor node in network
Maximum node degree Kmax, minimum node degree Kmin, node degree summation ΔK, the sum of primary power of sensor node E in networkΔ
(0)；
(2) cluster head message is selected in aggregation node broadcast, and any sensor node i is with probability PiRandomly become candidate cluster head,
Wherein, P is setiCalculation formula are as follows:
In formula, Ei0For the primary power of sensor node i, EiFor the current remaining of sensor node i, KiFor sensing
The node degree of device node i, N are the sensor node number in network；λ1、λ2For the weight coefficient of setting；
(3) when sensor node i becomes candidate cluster head, cluster message is transmitted into the hop neighbor node of oneself, this enters cluster
Message includes the node degree of sensor node i；If receiving the node degree of the hop neighbor node into cluster message no more than sensor
The node degree of node i, then to sensor node i reply confirmation be added message, if more than the node degree of sensor node i, then to
Sensor node i, which is replied, transfers the possession of cluster head message；
(4) if message is added in the confirmation that sensor node i receives all hop neighbor nodes, formally become cluster head；It passes
If sensor node i is received within the set time transfers the possession of cluster head message, all hop neighbors for transferring the possession of cluster head message are being had sent
It selects node degree maximum as formal cluster head in node, and has transferred the possession of message to the neighbor node of oneself broadcast cluster head, sense
It device node i and receives the cluster head and has transferred the possession of each neighbor node of message and be all added to the formal cluster head.
Sensor node selects cluster head by campaigning for operation, and this gives corresponding cluster head selection mechanism, the clusters
Head selection mechanism selects candidate cluster head by way of probability selection first, then by candidate cluster head and one hop neighbor node
Node degree is compared, and selects the maximum sensor node of node degree as formal cluster head always.The present embodiment sets candidate
The new probability formula of cluster head considers the primary power, dump energy and node degree of sensor node simultaneously in the new probability formula
Situation is conducive to balanced sensor node energy consumption, and the cluster head selection mechanism of the present embodiment is adapted to stronger scene
Ability.The present embodiment big sensor node of selection node degree as far as possible when building cluster serves as cluster head, advantageously reduces cluster head number
Mesh, so that the time of harmful gas concentration data collection can be reduced on the whole, when reducing harmful gas concentration data collection
Prolong.
In one embodiment, cluster head selects a sensor node in cluster as data-collection nodes, its in cluster
The harmful gas concentration data of acquisition are sent to the data-collection nodes or corresponding cluster head according to distance by remaining sensor node；When
When the harmful gas concentration data volume that data-collection nodes receive reaches its largest buffered, data-collection nodes have received
Gas concentration data forwarding is done harm to cluster head.
Wherein, the harmful gas concentration data of acquisition are sent to the data collection section according to distance by remaining sensor node
Point or corresponding cluster head, it may be assumed that when closer with the distance between data-collection nodes, sensor node is dense by the pernicious gas of acquisition
Degree is according to being sent to data-collection nodes, and when closer at a distance from cluster head, sensor node is by the harmful gas concentration of acquisition
Data are sent to the cluster head.
Wherein, cluster head selects a sensor node in cluster as data-collection nodes, comprising:
(1) select probability of each sensor node in cluster is calculated according to the following formula, and determines that MAXIMUM SELECTION therein is general
Rate PmaxWith minimum select probability Pmin:
In formula, PabIndicate that cluster head a corresponds to the select probability of cluster inner sensor node b, DabFor cluster head a and the sensor
The distance of node b, RaFor the cluster radius of the cluster head a, dbFor the communication distance of the sensor node b, nbFor the sensor
The neighbor node number of node b, NaThe sensor node number of cluster, μ are corresponded to for cluster head a1、μ2For the weight coefficient of setting；
(2) sensor node each in cluster is ranked up according to the descending sequence of select probability, will be therefrom selected general
Rate is greater thanSensor node alternately data-collection nodes, and be included into alternate data collector node set；
(3) cluster head selects the maximum alternate data of a current remaining to collect in alternate data collector node set
Node is as data-collection nodes.
If the sensor node in cluster will have to directly send out harmful gas concentration data without data-collection nodes
It send to cluster head, this incites somebody to action therefore biggish communication overhead and congestion.The present embodiment sets the selection mechanism of data-collection nodes, leads to
On the one hand the setting for crossing data-collection nodes can reduce communication overhead and congestion, on the other hand can effectively improve cluster head remittance
The efficiency of total harmful gas concentration data, and the load of cluster head can be shared, to reduce the energy consumption of cluster head；The present embodiment root
The determination of alternate data collector node is carried out according to select probability, the data-collection nodes for capableing of effective guarantee selection being capable of larger model
Exclosure covers the sensor node in cluster, to ensure certain data collection efficiency.
In one embodiment, when the runing time of data-collection nodes reaches the time threshold T of setting, cluster head judgement
Whether data-collection nodes meet following update condition, if so, cluster head reselects in alternate data collector node set
The maximum alternate data collector node of one current remaining is as data-collection nodes, with the data collection section before replacement
Point:
In formula, EjFor the current remaining of data-collection nodes j, E2It is received for the 7th data in alternate data collector node
Collect the current remaining of node, m is the number of data-collection nodes in alternate data collector node.
The present embodiment sets the more new strategy of data-collection nodes, wherein specifically proposing the update item based on energy
Part.By being timed monitoring to data-collection nodes, and judge whether data-collection nodes meet the update item in monitoring
Part carries out the update of data-collection nodes when being, helps that the energy consumption of cluster inner sensor node is made to keep in balance.
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. the exceeded early warning system of harmful gas concentration, characterized in that including sensing device, control device, inlet end control circuit,
Executive device, display, alarm；
The sensing device is for acquiring indoor harmful gas concentration data；
The control device makes comparisons harmful gas concentration data with corresponding setting value, controls inlet end according to comparison result
Control circuit, with the opening and closing of air-valve in control room and outdoor air-valve；The control device exports alarm signal also according to comparison result
Breath；
The executive device comprising the wireless transceiver being wirelessly connected with control device, the wireless transceiver is for receiving
The warning message that the control device is sent；
The display is connect with executive device and control device, for showing harmful gas concentration data and alarm signal
Breath；
The alarm is connect with executive device, and executive device controls the alarm according to the warning message and alarms.
2. the exceeded early warning system of harmful gas concentration according to claim 1, characterized in that the sensing device includes converging
Poly- node and multiple for acquiring the sensor nodes of harmful gas concentration data, sensor node passes through when constructing network topology
Cluster head is selected in election contest operation, and carries out sub-clustering according to the cluster head elected；Cluster head is configured as acquiring cluster inner sensor node
Harmful gas concentration data summarization and be sent to aggregation node；Aggregation node is configured as the pernicious gas for summarizing each cluster head
Concentration data is sent to the control device.
3. the exceeded early warning system of harmful gas concentration according to claim 2, characterized in that the sensor node includes
Corresponding have for acquiring the sensor of the harmful gas concentration signal in region to be monitored and for being converted to sensor signal
The signal adapter of evil gas concentration data, the signal adapter are connect with sensor；It further include for controlling frequency acquisition
Controller, the controller connect with sensor；
Wherein, the sensor includes:
Nitrogen dioxide sensor, for detecting indoor nitrogen dioxide content value；
SO 2 sensor, for detecting indoor content of sulfur dioxide value；
Formaldehyde sensor, for detecting indoor formaldehyde content values；
Ozone sensor, for detecting indoor ozone content value.
4. the exceeded early warning system of harmful gas concentration according to claim 1-3, characterized in that the control dress
It sets including database, comparative analysis unit and prewarning unit, the databases contain the corresponding setting value；The ratio
It is used to for harmful gas concentration data being compared with corresponding setting value compared with analytical unit, and exports comparison result；It is described pre-
Alert unit is that harmful gas concentration data export warning message when exceeding setting value in the comparison result.
5. the exceeded early warning system of harmful gas concentration according to claim 1, characterized in that the inlet end control circuit
Including outdoor air-valve control circuit and indoor air-valve control circuit.
6. the exceeded early warning system of harmful gas concentration according to claim 2, characterized in that the sensor node passes through
Cluster head is selected in election contest operation, comprising:
(1) in aggregation node collection network each sensor node node degree and energy information, according to the information of collection determine use
In election contest operation relevant information and broadcast to each sensor node, the relevant information includes that sensor node is most in network
Big node degree Kmax, minimum node degree Kmin, node degree summation ΔK, the sum of primary power of sensor node E in networkΔ(0)；
(2) cluster head message is selected in aggregation node broadcast, and any sensor node i is with probability PiRandomly become candidate cluster head, wherein
Set PiCalculation formula are as follows:
In formula, Ei0For the primary power of sensor node i, EiFor the current remaining of sensor node i, KiFor sensor section
The node degree of point i, N are the sensor node number in network；λ1、λ2For the weight coefficient of setting；
(3) when sensor node i becomes candidate cluster head, cluster message is transmitted into the hop neighbor node of oneself, this enters cluster message
Node degree including sensor node i；If receiving the node degree of the hop neighbor node into cluster message no more than sensor node i
Node degree, then to sensor node i reply confirmation be added message, if more than the node degree of sensor node i, then to sensor
Node i, which is replied, transfers the possession of cluster head message；
(4) if message is added in the confirmation that sensor node i receives all hop neighbor nodes, formally become cluster head；Sensor
If node i receives within the set time transfers the possession of cluster head message, all hop neighbor nodes for transferring the possession of cluster head message are being had sent
It is middle to select node degree maximum as formal cluster head, and message, sensor section have been transferred the possession of to the neighbor node of oneself broadcast cluster head
It point i and receives the cluster head and has transferred the possession of each neighbor node of message and be all added to the formal cluster head.
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| CN201810863144.8A CN109140680B (en) | 2018-07-31 | 2018-07-31 | Harmful gas concentration standard exceeding early warning system |
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