Specific implementation mode
The invention will be further described with the following Examples.
Referring to Fig. 1, wind-power engine room Intelligent fire-fighting automatic measuring and controlling system provided in this embodiment, including wireless sensor network
Monitoring subsystem 1, control centre 2, device control module 3, emergent execution module 4, fire-fighting module 5;The wireless sensor
Network monitor subsystem 1 is used to acquire the environmental data including temperature, smokescope and oxygen concentration in wind-power engine room, described
Radio sensor network monitoring subsystem includes base station and multiple sensor nodes being deployed in fire-fighting observing and controlling region, each sensing
Device node is responsible for obtaining the environmental data of institute's measuring point, and the friendship of the bidirectional information between sensor node and control centre is responsible in base station
Mutually, sensor node and base station be single-hop apart from when, the environmental data of acquisition is directly sent to base station by sensor node;Sensing
Device node and base station be multi-hop apart from when, sensor node sends acquired environment number to base station by the form of multi-hop transmission
According to;The control centre 2 is used for according to environmental data control device control module 3, emergent execution module 4 and fire-fighting module 5
Work, wherein device control module 3, fire-fighting module 5 and emergent execution module 4 all wireless connection control centers 2, equipment control mould
Block 3 is used to control the power supply and start and stop of Wind turbines, and the fire-fighting module 5 is used for the order-driven two according to control centre 2
Carbon oxide gas is put out a fire, and the emergent execution module 4 is used to receive the instruction of control centre 2, cuts off Wind turbines and power grid
Connection and record field conditions.
Preferably, the control centre 2 include for storage environment data memory module 20, receive central processing module
The drive module 30 and display module 40 of 10 instructions, the signal processing module 50 for sending information to central processing module 10 and input
Module 60.
Preferably, the fire-fighting module 5 include carbon dioxide gas gas cylinder, nitrogen driver bottle, air shooter,
Pipeline is driven, after control centre 2 judges that fire occurs according to environmental data, the solenoid valve on nitrogen driver bottle is sent out
Open signal drives the nitrogen in gas cylinder by driving pipeline to open the tack valve of CO 2 high pressure gas cylinder, makes carbon dioxide
Gas sprays rapidly automatically, is delivered into cabin and is put out a fire by air shooter.
The above embodiment of the present invention combining with wireless sensor network technology, administrative distance length, range when wind park is run
Extensively, unit distribution more disperses, and under nacelle position environment is special and special situation of high altitude and the present situations such as unattended, realizes pair
The real-time acquisition of wind turbine indoor environment data handles the environmental data after acquisition by control centre 2, realizes to wind turbine
The security against fire in cabin carries out monitoring and emergency processing automatically.
In one embodiment, sensor node sends acquired environment number to base station by the form of multi-hop transmission
According to specifically including:
(1) when netinit, base station builds message to all the sensors node broadcasts neighboring node list, receives the neighbour
After occupying node listing structure message, sensor node obtains information of neighbor nodes by information exchange, and builds neighbor node row
Table;When initial, sensor node randomly selects a neighbor node in its multiple neighbor node according to neighboring node list and makees
For relay node, the environmental data of acquisition is sent to relay node, to forward environmental data by multiple relay nodes
Mode sends acquired environmental data to base station;
(2) after a period T, sensor node obtains its neighbor node by the information exchange with neighbor node
It is helped to forward the feedback letter of the total number of the number of environmental data packet and neighbor node forwarding environmental data packet in period T
Breath, during next period T, sensor node calculates it to each neighbour according to feedback information every a time interval Δ t
Occupy the degree of belief of node;
(3) sensor node divides reliability rating according to current degree of belief to each neighbor node, and neighbor node is divided
For normal node, malicious node and selfish node three classes, and one is selected as relay node, by environment number from normal node
It is sent to the relay node according to packet.
Wherein, set the calculation formula of degree of belief as:
In formula, Pij(T+ Δs t) indicate sensor node i in T+ time Δts to the degree of belief of its j-th of neighbor node,qij(T) number of sensor node i forwarding environmental data packets is helped in period T for j-th of neighbor node
Mesh, Qj(T) total number of environmental data packet, D are forwarded in period T for j-th of neighbor nodeijFor sensor node i
The distance between its j-th of neighbor node, DjoFor j-th of neighbor node to the distance of base station, DilFor sensor node
The distance between i and its first of neighbor node, DloFor first of neighbor node to the distance of base station, niFor sensor node
The neighbor node number of i, e-wΔtFor degree of belief decay factor, and w ∈ (0,0.1], a, b are all weight coefficient, and meet 0<a,b<
1。
Wherein, it is to the concrete mode of neighbor node division:Critical value h is trusted in setting first1, second trust critical value h2,
For the arbitrary neighbor node j of sensor node i, work as Pij(T+Δt)∈(0,h1) when, neighbor node j is divided into malice and is saved
Point, works as Pij(T+Δt)∈[h1,h2) when, neighbor node j is divided into selfish node, works as Pij(T+Δt)∈[h2, 1) when, it will
Neighbor node j is divided into normal node.
The present embodiment sets the routing forwarding mechanism that sensor node sends acquired environmental data to base station, the road
It divides the strategy of reliability rating according to degree of belief to each neighbor node by mechanism, innovatively proposing, and innovatively sets
Determined the calculation formula of degree of belief, the calculation formula according to node for data forwarding packet the case where, the distance between node situation come
Degree of belief of the neighbor node relative to sensor node is judged, and considers and trusts the case where decaying since the time elapses, tool
There is certain robustness;With sensor node selection degree of belief high sensor node (the i.e. normal section that base station is multi-hop distance
Point) forward environmental data packet, the reliability of environmental data transmission is improved, ensures that communication is stablized.
Wherein, every next period T, sensor node reacquire feedback information, and according to feedback information every
One time interval Δ t calculates its degree of belief to each neighbor node, to which sensor node divides trust etc. to neighbor node
The process of grade is dynamic, ensures that the degree of belief of calculating can more accurately weigh the state and transfer capability of neighbor node.
First trusts critical value h1It is the critical value of non-malicious node and malicious node, if it is, influence is sentenced
The sensitivity of disconnected malicious node, if setting is excessively high, it will some non-malicious nodes are excluded except data transfer path, into
And reduce the efficiency of routing.In one embodiment, critical value h is trusted in setting first according to the following formula1, second trust it is critical
Value h2:
In formula, niFor the neighbor node number of sensor node i, P0For the initial trust degree of neighbor node, P0=0.5.
The present embodiment proposes the first trust critical value h1, second trust critical value h2Setting formula so that trust it is critical
Value setting can according to the variation of degree of belief dynamic change, so as to preferably according to degree of belief carry out sensor node
Classification, improve and judge the sensitivity of malicious node, improve the efficiency of routing.
In one embodiment, for there are the relay nodes of multiple environmental data packets to be forwarded, according to environment number
The forwarding of environmental data packet is carried out according to the descending sequence of the priority of packet, wherein the calculating of the priority of environmental data packet
Formula is:
In formula,Indicate the priority of the μ environmental data packets to be forwarded of relay node j,It is described
The environmental data quantity of the μ environmental data packets to be forwarded,For v-th of environmental data to be forwarded of relay node j
The environmental data quantity of packet, i-Yj(μ) indicates to send the sensor of the μ environmental data packets to be forwarded to relay node j
Node,It is relay node j to sensor node i-YjThe degree of belief of (μ), i-Yj(v) it indicates to send to relay node j
The sensor node of this v-th environmental data packet to be forwarded,It is relay node j to sensor node i-Yj(v)
Degree of belief, QjFor the relay node j environmental data packet quantity to be forwarded, z1、z2For setting weight coefficient and meet z1+z2=1.
The present embodiment innovatively sets the calculation formula of environmental data packet forwarding priority, and relay node is according to calculating
The sequence of the priority gone out forwards environmental data packet, advantageously allows degree of belief height and account for cache big environmental data packet preferentially quilt
Forwarding, improves the efficiency of cache management, reduces the congestion ratio of relay node, improves the speed of environmental data transmission, to
The operational efficiency of wind-power engine room Intelligent fire-fighting automatic measuring and controlling system is improved on the whole.
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 being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answer
Work as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and range.