CN107995599A - A kind of natural rubber collection monitoring method based on frequency spectrum perception technology - Google Patents
A kind of natural rubber collection monitoring method based on frequency spectrum perception technology Download PDFInfo
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- CN107995599A CN107995599A CN201711100096.9A CN201711100096A CN107995599A CN 107995599 A CN107995599 A CN 107995599A CN 201711100096 A CN201711100096 A CN 201711100096A CN 107995599 A CN107995599 A CN 107995599A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses a kind of natural rubber based on frequency spectrum perception technology to gather monitoring method.A kind of natural rubber collection warning device is set, the liquid level that lotion in glue bucket is connect using liquid level sensor sensing is changed, utilize visual overlay, the growing environment of Temperature Humidity Sensor monitoring rubber forest, the positioning to monitoring objective is realized using the positioning function of anchor sensor node and wireless senser itself, introduce frequency spectrum perception technology and wireless sensor node composition cognition wireless sensor network, realize the function such as the intelligent acquisition of natural rubber, the monitoring of rubber forest growing environment.The method of the present invention can make gum-digger's division of labor clear and definite, quick and precisely find it is to be transported connect glue bucket, drastically increase tapper's task efficiency.There is easy to use, fast response time, high certainty of measurement, simple in structure, small, light-weight, waterproof, insect prevention, easy to maintain, wide application.
Description
Technical field
The invention belongs to field of communication technology, more particularly to a kind of natural rubber collection monitoring based on frequency spectrum perception technology
Method.
Background technology
Natural rubber is a kind of natural polymer using polyisoprene as main component, is adopted from rubber tree
Collect and obtain.With characteristics such as excellent resilience, insulating properties, water-resisting property and plasticity, and also with resistance to after proper treatment
The preciousness property such as oily, acidproof, alkaline-resisting, heat-resisting, cold-resistant, pressure-resistant, wear-resisting.Therefore, it not only provide daily life for people can not
Or the light industry rubber product such as daily, medical lacked, and to the heavy industry such as digging, traffic, building, machinery, electronics and emerging production
Industry provides various rubber system production equipments or rubber components.
Rubber Industry chain generally comprises " rubber planting-raw material trade-rubber processing-downstream consumption " several links, its
The collection of middle natural rubber belongs to the source of Rubber Industry chain, is the raw material of all rubbers.
The collection of natural rubber manually gathers entirely substantially at present：One is cut open on rubber tree tilt 30 first with cutter
The notch of left and right is spent, an aluminium groove is put in the lower part of notch, and since latex dust is cut, latex is under the action of turgescence just along cutter side
To flowing down, by fixed the connecing in glue bucket in the tree of aluminium groove injection（It is general to be made of ceramics or aluminium）, by 1-2 it is small when, breast
Turgescence declines in pipe, and Latex flow is reduced, moisture evaporation and natural coagulation under the action of consolidating enzyme in latex, shape in the middle part of the latex
Into a tree lace, self-closed scarfing.
In this gatherer process, after rubber tree is by scarfing, worker needs constantly to walk about in rubber forest, checks whether there is
Mouth of tapping rubber is closed or rubber latex bucketful situation, so as to be handled accordingly.This traditional artificial natural rubber collection side
Formula, not only needs substantial amounts of manually participation, and work efficiency is relatively low, is not suitable for the rubber forest management of large area.
The present invention connects the lotion change in glue bucket using liquid level sensor monitoring first, utilizes determining for wireless sensor network
Bit function edge-jointing adhesive bucket is positioned, and can monitor in real time collection situation of the monitoring center to rubber tree lotion, make fortune
Defeated worker connects the position of glue bucket by acquisition for mobile terminal, needs that transports to connect glue bucket so as to be quickly found out.Relative to biography
The rubber tree lotion collection mode of system, highly shortened the working time of worker, improves work efficiency, so as to save big
The human resources of amount.Secondly, the growing environment of rubber forest is monitored using video sensor and Temperature Humidity Sensor, a side
Face can realize the monitoring function such as effective daily management and fire prevention to rubber forest, antitheft, ensure the safety of rubber forest, ensure glue
The legal income of agriculture, reduces the loss of glue agriculture.On the other hand the raw materials requirement business in Rubber Industry chain can also be made to grasp in real time
The natural rubber yield of rubber supplier, so as to adjust the purchase channel and rubber output of oneself.Finally, frequency spectrum is introduced
Cognition technology, can alleviate the frequency spectrum resource anxiety problem that wireless environment around rubber forest is faced, and improve the frequency of Radio Resource
Utilization rate is composed, the fine application of frequency spectrum perception technology and location technology in Internet of Things rubber forest is finally realized, has promoted intelligence
Intelligent agriculture development.
The content of the invention
The purpose of the present invention is improving the management method of traditional natural rubber acquisition method and rubber forest, existing skill is overcome
A kind of the defects of art and management, there is provided natural rubber collection monitoring method based on frequency spectrum perception technology.
Concretely comprise the following steps：
(1) a kind of natural rubber collection warning device is set, including：Retainer ring, protective cover, diversion trench, sensor stand, liquid level
Sensor, connect glue bucket and base；Protective cover is fixed on rubber tree by retainer ring；Protective cover be located at diversion trench and connect glue bucket just on
Side, diversion trench is covered completely with connecing above glue bucket；Diversion trench connects rubber tree cut opening and connects glue bucket；Liquid level sensor is installed
On the sensor stand connect in glue bucket；Glue bucket position is connect immediately below diversion trench；Base is put on the ground, will be connect glue bucket and is fixed on
Immediately below diversion trench.
The retainer ring is used to protective cover being fixed on rubber tree.
The protective cover is used to protect diversion trench and connect glue bucket, prevents fallen leaves, winged insect and rainwater etc. from falling into diversion trench and connecing
In glue bucket, the purity of rubber tree lotion is destroyed.
In trunk below diversion trench pointed portion insertion rubber tapping mouth, the other end, which is put in, to be connect in glue bucket, for by rubber
Gum tree lotion, which is guided to, to be connect in glue bucket.
The sensor stand is divided into two parts, and top is a square PVC piece, for placing sensor circuit board,
It is a coating steel pipe immediately below among square PVC pieces, is arranged to cylinder, for placing liquid level sensor, liquid can be protected
Impact flow of the level sensor from rubber latex.
The liquid level sensor is responsible for sensing and connects the change of rubber tree lotion liquid level in glue bucket, and with positional information known to
Anchor sensor node is combined, to determine the position of liquid level sensor, so that it is determined that the position of rubber drum.
The glue bucket that connects is used to hold rubber tree lotion, can move.
The base is used for fixation and connects glue bucket, makes to connect glue bucket position immediately below diversion trench.
(2) rubber tapping worker cuts open bark on rubber tree, and rubber tree lotion flows into along diversion trench from incision and connects glue bucket
It is interior.Connect in glue bucket liquid level sensor sensing rubber tree lotion liquid level information, while with positional information known to anchor sensor
Node is combined, and own location information is calculated, so that it is determined that the position of liquid level sensor, that is, connects the position of glue bucket, so
Liquid level information and positional information by aggregation node and are authorized into network real-time Transmission to monitoring center afterwards.When the rubber in rubber drum
When gum tree lotion liquid level reaches setting numerical value, alarm system sends alarm, and monitoring client will send the position for connecing glue bucket of alarm signal
Confidence breath is sent to the mobile terminal for transporting worker, and transport worker can accurately find according to positional information and to be transported connect glue
Bucket, it is achieved thereby that the intelligent acquisition monitoring of natural rubber.
(3) rubber forest monitoring system includes front end system, Transmission system and monitoring center.Front end system refers mainly to perceive
Layer, including liquid level sensor, anchor sensor node, Temperature Humidity Sensor, visual overlay and aggregation node.Level sensing
Device is installed on the sensor stand connect in glue bucket, anchor sensor node, Temperature Humidity Sensor, visual overlay and convergence
Node deployment is in rubber forest.
The Temperature Humidity Sensor carries out data information acquisition to the temperature and humidity of rubber forest growing environment, is set when reaching
During constant temperature humidity, the alarm system for triggering monitoring center is alarmed, and rubber forest manager makes appropriate place according to warning message
Reason.
The visual overlay carries out video monitoring to rubber forest, can realize the function such as fire prevention, antitheft.
The anchor sensor node is node known to positional information, and liquid level sensor, Temperature Humidity Sensor and video are taken the photograph
As sensor calculates the position of itself according to anchor sensor node.
The aggregation node is responsible for the information for collecting liquid level sensor, Temperature Humidity Sensor, visual overlay
And own location information is converged and by authorizing forwarded to monitoring center.
The Transmission system refers to transport layer, realizes that Real-time Monitoring Data and position are believed using 3G/4G, bluetooth or WiFi technology
The transmission of breath.
The monitoring center refers to application layer, including alarm system, monitoring client and mobile terminal, the rubber being responsible in edge-jointing adhesive bucket
Latex solution is monitored in real time.
The monitoring client receives the signal of aggregation node by transmission network, obtains rubber tree lotion in rubber drum in real time
The positional information of liquid level information and rubber drum, when the rubber tree lotion liquid level in rubber drum reaches setting numerical value, alarm system
Alarm is sent, monitoring client sends the positional information for connecing glue bucket for sending alarm signal to the mobile terminal of transport worker, so as to
Transport worker, which can timely and accurately find, to be transported connects glue bucket.Monitoring client is also needed to receive Temperature Humidity Sensor and regarded at the same time
The signal of frequency image sensor, and carry out respective handling.
(4) the rubber forest wireless sensor network framework based on frequency spectrum perception includes the liquid level biography with frequency spectrum perception ability
Sensor, anchor sensor node, Temperature Humidity Sensor and visual overlay, these sensing nodes are radio node, with remittance
Poly- node forms cognition wireless sensor network, and sensing node is perceived idle first from external wireless environment by perception algorithm
Frequency spectrum, then carries out spectrum analysis to the usable spectrum that detects, and estimates its parameter, the data that are obtained according to analysis and from
The demand information of body selects appropriate frequency spectrum, is accessed using suitable algorithm, finally by number in a manner of ad hoc multihop
It is believed that breath is sent to aggregation node, aggregation node realizes base again by these data by authorizing network to send to monitoring center
Monitoring is gathered in the natural rubber of frequency spectrum perception technology.
The liquid level that the method for the present invention connects lotion in glue bucket using liquid level sensor sensing changes, and is sensed using video camera
The growing environment of device, Temperature Humidity Sensor monitoring rubber forest, utilizes anchor sensor node and the positioning work(of wireless senser itself
It can realize the positioning to monitoring objective, while introduce frequency spectrum perception technology and wireless sensor node composition cognition wireless sensor
Network, makes full use of the idle frequency spectrum of wireless environment around, realizes the positioning of monitoring objective, the monitoring of rubber forest growing environment
Etc. function.Gum-digger's division of labor can be made clear and definite at the same time, special messenger is responsible for rubber tapping, and special messenger is responsible for transport, and transport worker passes through movement
Terminal obtains the positional information for connecing glue bucket to be transported in real time, needs that transports to connect glue bucket so as to be quickly found out, eliminates
The time for connecing glue bucket and wait is checked one by one, is greatly increased tapper's task efficiency, is realized the informationization of rubber forest
Management, suitable for the rubber forest management of large area.
Brief description of the drawings
Fig. 1 is that the natural rubber used in the embodiment of the present invention gathers the general frame of warning device.
Fig. 2 is that the natural rubber used in the embodiment of the present invention gathers the appearance front elevation of warning device.
Fig. 3 is that the natural rubber used in the embodiment of the present invention gathers the diversion trench front elevation of warning device.
Fig. 4 is that the natural rubber used in the embodiment of the present invention gathers the sensor stand top view of warning device.
Fig. 5 is that the natural rubber used in the embodiment of the present invention gathers the wireless sensor network Organization Chart of warning device.
Fig. 6 is intermediate frequency spectrum perception figure of the present invention.
Marked in figure：1- rubber trees；2- retainer rings；3- protective covers；4- diversion trenches；5- sensor stands；6- level sensings
Device；7- connects glue bucket；8- bases；9- anchor sensor nodes；10- aggregation nodes；11- Temperature Humidity Sensors；12- video cameras sense
Device.
Embodiment
Embodiment：
(1) a kind of natural rubber collection warning device is set, including：Retainer ring 2, protective cover 3, diversion trench 4, sensor stand 5,
Liquid level sensor 6, connect glue bucket 7 and base 8；Protective cover 3 is fixed on rubber tree 1 by retainer ring 2；Protective cover 3 is located at diversion trench 4
And connect directly over glue bucket 7, diversion trench 4 is covered completely with connecing the top of glue bucket 7；Diversion trench 4 connects rubber tree cut opening and connects glue
Bucket 7；Liquid level sensor 6 is installed on the sensor stand 5 connect in glue bucket 7；Glue bucket 7 is connect to be located at immediately below diversion trench 4；Base 8
Put on the ground, glue bucket 7 will be connect and be fixed on immediately below diversion trench 4.
The retainer ring 2 is used to protective cover 3 being fixed on rubber tree 1.
The protective cover 3 is used to protect diversion trench 4 and connect glue bucket 7, prevents fallen leaves, winged insect and rainwater etc. from falling into diversion trench 4
And connect in glue bucket 7, destroy the purity of rubber tree lotion.
In trunk below 4 pointed portion of the diversion trench insertion rubber tapping mouth, the other end, which is put in, to be connect in glue bucket 7, for inciting somebody to action
Rubber tree lotion, which is guided to, to be connect in glue bucket 7.
The sensor stand 5 divides for two parts, and top is a square PVC piece, for placing sensor circuit board,
It is a coating steel pipe immediately below among square PVC pieces, is arranged to cylinder, for placing liquid level sensor 6, liquid can be protected
Impact flow of the level sensor 6 from rubber latex.
The liquid level sensor 6 is responsible for sensing and connects the change of rubber tree lotion liquid level in glue bucket 7, and with positional information known to
Anchor sensor node 9 be combined, the position of liquid level sensor 6 is calculated by certain algorithm, so that it is determined that the position of rubber drum 7
Put.
The glue bucket 7 that connects is used to hold rubber tree lotion, can move.
The base 8 is used for fixation and connects glue bucket 7, makes to connect glue bucket 7 and be located at the underface of diversion trench 4.
(2) rubber tapping worker cuts open bark on rubber tree, and rubber tree lotion flows into along diversion trench 4 from incision and connects glue bucket
In 7.Connect the liquid level information that liquid level sensor 6 in glue bucket 7 senses rubber tree lotion, at the same with positional information known to anchor sense
Device node 9 is combined, and own location information is calculated, so that it is determined that the position of liquid level sensor 6, that is, connects the position of glue bucket 7
Put, liquid level information and positional information by aggregation node 10 and are then authorized into network real-time Transmission to monitoring center.Work as rubber
When rubber tree lotion liquid level in bucket 7 reaches setting numerical value, alarm system sends alarm, and monitoring client will send connecing for alarm signal
The positional information of glue bucket 7 is sent can accurately find to be shipped to the mobile terminal of transport worker, transport worker according to positional information
Defeated connects glue bucket 7, it is achieved thereby that the intelligent acquisition monitoring of natural rubber.
(3) rubber forest monitoring system includes front end system, Transmission system and monitoring center.Front end system refers mainly to perceive
Layer, including liquid level sensor 6, anchor sensor node 9, Temperature Humidity Sensor 11, visual overlay 12 and aggregation node 10.
Liquid level sensor 6 is installed on the sensor stand 5 connect in glue bucket 7, and anchor sensor node 9, Temperature Humidity Sensor 11, video are taken the photograph
As sensor 12 and aggregation node 10 are deployed in rubber forest.
The Temperature Humidity Sensor 11 carries out data information acquisition to the temperature and humidity of rubber forest growing environment, when reaching
When setting humiture, the alarm system for triggering monitoring center is alarmed, and rubber forest manager can make according to warning message
Proper treatment.
The visual overlay 12 carries out video monitoring to rubber forest, it is possible to achieve the function such as fire prevention, antitheft.
The anchor sensor node 9 is node known to positional information, liquid level sensor 6, Temperature Humidity Sensor 11 and is regarded
Frequency image sensor 12 can calculate the position of itself according to anchor sensor node 9.
The aggregation node 10 is responsible for collecting liquid level sensor 6, Temperature Humidity Sensor 11, visual overlay 12
Information and own location information converged and by authorizing forwarded to monitoring center.
The Transmission system refers to transport layer, mainly realizes Real-time Monitoring Data using technologies such as 3G/4G, bluetooth and WiFi
And the transmission of positional information.
The monitoring center refers to application layer, including alarm system, monitoring client and mobile terminal, is responsible in edge-jointing adhesive bucket 7
Rubber latex is monitored in real time.
The monitoring client receives the signal of aggregation node 10 by transmission network, obtains rubber tree milk in rubber drum 7 in real time
The liquid level information of liquid and the positional information of rubber drum 7, when the rubber tree lotion liquid level in rubber drum 7 reaches setting numerical value, report
Alert system sends alarm, and monitoring client sends the positional information for connecing glue bucket 7 for sending alarm signal to the mobile end of transport worker
End, can timely and accurately find to transport worker and to be transported connect glue bucket 7.Monitoring client also needs to receive humiture biography at the same time
The signal of sensor 11 and visual overlay 12, and carry out respective handling.
(4) the rubber forest wireless sensor network framework based on frequency spectrum perception includes the liquid level biography with frequency spectrum perception ability
Sensor 6, anchor sensor node 9, Temperature Humidity Sensor 11 and visual overlay 12, these sensing nodes are wireless section
Point, forms cognition wireless sensor network, sensing node utilizes certain first from external wireless environment with aggregation node 10
Perception algorithm perceives idle frequency spectrum, then carries out spectrum analysis to the usable spectrum that detects, and estimates its parameter etc., according to point
Analyse obtained data and the demand information of itself selects appropriate frequency spectrum, accessed using suitable algorithm, finally with certainly
The mode of tissue multi-hop sends data message to aggregation node 10, and aggregation node 10 is again by these data by authorizing network to send out
Send to monitoring center.Realize the supervisory function bit of the rubber forest based on frequency spectrum perception.
Claims (1)
1. a kind of natural rubber collection monitoring method based on frequency spectrum perception technology, it is characterised in that concretely comprise the following steps：
(1) a kind of natural rubber collection warning device is set, including：Retainer ring, protective cover, diversion trench, sensor stand, liquid level
Sensor, connect glue bucket and base；Protective cover is fixed on rubber tree by retainer ring；Protective cover be located at diversion trench and connect glue bucket just on
Side, diversion trench is covered completely with connecing above glue bucket；Diversion trench connects rubber tree cut opening and connects glue bucket；Liquid level sensor is installed
On the sensor stand connect in glue bucket；Glue bucket position is connect immediately below diversion trench；Base is put on the ground, will be connect glue bucket and is fixed on
Immediately below diversion trench；
The retainer ring is used to protective cover being fixed on rubber tree；
The protective cover is used to protect diversion trench and connect glue bucket, prevents fallen leaves, winged insect and rainwater etc. from falling into diversion trench and connecing glue bucket
It is interior, destroy the purity of rubber tree lotion；
In trunk below diversion trench pointed portion insertion rubber tapping mouth, the other end, which is put in, to be connect in glue bucket, for by rubber tree
Lotion, which is guided to, to be connect in glue bucket；
The sensor stand is divided into two parts, and top is a square PVC piece, square for placing sensor circuit board
It is a coating steel pipe immediately below among shape PVC pieces, is arranged to cylinder, for placing liquid level sensor, liquid level can be protected to pass
Impact flow of the sensor from rubber latex；
The liquid level sensor is responsible for sensing and connects the change of rubber tree lotion liquid level in glue bucket, and with positional information known to anchor pass
Sensor node is combined, to determine the position of liquid level sensor, so that it is determined that the position of rubber drum；
The glue bucket that connects is used to hold rubber tree lotion, can move；
The base is used for fixation and connects glue bucket, makes to connect glue bucket position immediately below diversion trench；
(2) rubber tapping worker cuts open bark on rubber tree, and rubber tree lotion is flowed into along diversion trench from incision and connect in glue bucket；Connect
In glue bucket liquid level sensor sensing rubber tree lotion liquid level information, while with positional information known to anchor sensor node phase
With reference to calculating own location information, so that it is determined that the position of liquid level sensor, that is, the position of glue bucket connect, then by liquid
Position information by aggregation node and authorizes network real-time Transmission to monitoring center with positional information；When the rubber tree milk in rubber drum
When liquid liquid level reaches setting numerical value, alarm system sends alarm, and monitoring client will send the positional information for connecing glue bucket of alarm signal
Send to the mobile terminal for transporting worker, transport worker according to positional information can accurately find it is to be transported connect glue bucket so that
Realize the intelligent acquisition monitoring of natural rubber；
(3) rubber forest monitoring system includes front end system, Transmission system and monitoring center；Front end system refers mainly to sensing layer, bag
Include liquid level sensor, anchor sensor node, Temperature Humidity Sensor, visual overlay and aggregation node；Liquid level sensor is pacified
On the sensor stand connect in glue bucket, anchor sensor node, Temperature Humidity Sensor, visual overlay and aggregation node
It is deployed in rubber forest；
The Temperature Humidity Sensor carries out data information acquisition to the temperature and humidity of rubber forest growing environment, warm when reaching setting
During humidity, the alarm system for triggering monitoring center is alarmed, and rubber forest manager makes proper treatment according to warning message；
The visual overlay carries out video monitoring to rubber forest, can realize the function such as fire prevention, antitheft；
The anchor sensor node is node known to positional information, and liquid level sensor, Temperature Humidity Sensor and video camera pass
Sensor calculates the position of itself according to anchor sensor node；
The aggregation node be responsible for the information for collecting liquid level sensor, Temperature Humidity Sensor, visual overlay and from
Body positional information is converged and by authorizing forwarded to monitoring center；
The Transmission system refers to transport layer, and Real-time Monitoring Data and positional information are realized using 3G/4G, bluetooth or WiFi technology
Transmission；
The monitoring center refers to application layer, including alarm system, monitoring client and mobile terminal, the latex rubber being responsible in edge-jointing adhesive bucket
Liquid is monitored in real time；
The monitoring client receives the signal of aggregation node by transmission network, obtains the liquid level of rubber tree lotion in rubber drum in real time
The positional information of information and rubber drum, when the rubber tree lotion liquid level in rubber drum reaches setting numerical value, alarm system is sent
Alarm, monitoring client send the positional information for connecing glue bucket for sending alarm signal to the mobile terminal of transport worker, to transport
Worker, which can timely and accurately find, to be transported connects glue bucket；Monitoring client also needs to receive Temperature Humidity Sensor at the same time and video is taken the photograph
As the signal of sensor, and carry out respective handling；
(4) the rubber forest wireless sensor network framework based on frequency spectrum perception includes the level sensing with frequency spectrum perception ability
Device, anchor sensor node, Temperature Humidity Sensor and visual overlay, these sensing nodes are radio node, with convergence
Node forms cognition wireless sensor network, and sensing node perceives idle frequency first from external wireless environment by perception algorithm
Spectrum, then carries out spectrum analysis to the usable spectrum that detects, and estimates its parameter, the data obtained according to analysis and itself
Demand information select appropriate frequency spectrum, accessed using suitable algorithm, finally by data in a manner of ad hoc multihop
Information sends to aggregation node, aggregation node and realizes and be based on again by these data by authorizing network to send to monitoring center
The natural rubber collection monitoring of frequency spectrum perception technology.
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| WO2011156029A2 (en) * | 2010-03-12 | 2011-12-15 | Bae Systems Information And Electronic Systems Integration Inc. | Method and system to make current wireless radios cognitive using an external sensor and application level messaging |
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