CN109275203A - A kind of scalable distributed honeycomb flexible sensor network - Google Patents
A kind of scalable distributed honeycomb flexible sensor network Download PDFInfo
- Publication number
- CN109275203A CN109275203A CN201811148306.6A CN201811148306A CN109275203A CN 109275203 A CN109275203 A CN 109275203A CN 201811148306 A CN201811148306 A CN 201811148306A CN 109275203 A CN109275203 A CN 109275203A
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- Prior art keywords
- sensor network
- train
- bearing bed
- flexible sensor
- scalable distributed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
-
- 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
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
Abstract
The invention discloses a kind of scalable distributed honeycomb flexible sensor networks, the sensor network uses for reference micro-nano processing technology construction, using extending polymer as bearing bed, with regular hexagon honeycomb placement sensor network on flexible substrate layer, form a kind of distributed multifunctional honeycomb flexible sensor network of anthropoid neural network being closely integrated, there is processing function in the embedded microcontroller of its network node, be fixed on train composition surface, for based on Lamb wave train composition damage monitoring and diagnosis.The bearing bed of the sensor network is light, soft, can be attached in the structure of any 3D shape, and area coverage is big well, be laid out and be easily installed.The sensor network monitoring range is bigger, and can be improved the accuracy that damage differentiates, has stability under extreme operating environments, has high-adaptability to train labyrinth.
Description
Technical field
The invention belongs to wireless sensor network fields, and in particular to a kind of scalable distributed honeycomb flexible sensor
Network.
Background technique
Sensor network be by a large amount of minute sense device nodes by Ad hoc mode constitute can be independently complete according to environment
At the distributed intelligence network system of appointed task, wherein sensor deployment in the zone of action and has wireless communication and meter
Calculation ability.The euclidean distance between node pair very little of sensor network, the communication for generalling use multi-hop (multi-hop) are led to
Letter.
Sensor network combines sensor technology, embedding assembly technology, modern network and wireless communication technique, distribution
Formula information processing technology etc. is cooperated jointly by all kinds of integrated microsensors, can real-time intelligent monitoring, perceive and adopt
The information for collecting various environment or monitoring object is handled information by embedded system, and passes through random ad-hoc wireless
The information perceived is transmitted to user terminal in a manner of multi-hop relay by communication network.
In monitoring structural health conditions, the arrangement of sensor is the Fundamental Aspects for first having to face.Because either adopting
With the global damage diagnosis method such as dynamical dactylogram analysis method, mode updating and system identification method or neural network method
In which kind of, require the information such as intrinsic frequency and the mode of structure, need to adopt by installing more acceleration transducer
Collect the vibration signal of structure.Therefore the arrangement of sensor can have a certain impact to the result of monitoring structural health conditions.
The arrangement of different types of sensor, number of sensors and sensor network, to monitoring structural health conditions
Monitoring range is different, and as a result precision is different, and adaptable operating condition is also different.
Structural damage and relevant detection technique for train or track different parts, also there is more research both at home and abroad
And application, it is 3 points based on oval location technology or 4 damage reason locations mostly, but due to bullet train key position structure
Complexity, working sensor environment is relatively severe, cannot overcome ambient noise, measurement error, time delay meter well
The factors such as method error are calculated, error can be brought to positioning.Especially when damage is near the line of exciting element and sensing element
Or when on line, time delay is smaller, and time delay small at this time can prolong due to ambient noise, measurement error, time
Calculating the factors such as error late becomes to survey, and cannot also obtain the information of true damage position.
Therefore, sensor network in the prior art can not overcome because the factors bring such as working environment or time delay is asked
Topic not can guarantee simultaneously for the precision etc. that damage differentiates yet.
Summary of the invention
The object of the present invention is to provide a kind of scalable distributed honeycomb flexible sensor networks, to solve for high speed
When the structural damage intellectual monitoring of train key position, sensor network damage positioning technique cannot overcome ambient noise, measurement
The problem of factors such as error, time delay calculation error.
In order to solve the above technical problems, the present invention adopts the following technical solutions:
A kind of scalable distributed honeycomb flexible sensor network, including bearing bed and the sensing being arranged on bearing bed
Device,
The bearing bed is process extending polymer using nano-photoetching method；
The sensor is arranged on the bearing bed with six point type regular hexagons.
Preferably, the extending polymer is Kapton.
Preferably, the sensor is piezoelectric transducer.
Preferably, microprocessor is embedded with using embedded system in the node of the piezoelectric transducer.
Preferably, the sensor network is used to be fixed on the position to be detected of train,
Wherein, the position to be detected includes train body, train bogie, train coupler and draw bar.Of the invention
It has the beneficial effect that:
1, a kind of scalable distributed honeycomb flexible sensor network provided by the invention, can be to bullet train key
Portion structure damages intellectual monitoring and diagnosis.Since the bearing bed use of scalable distributed honeycomb flexible sensor network can
Ductile polymer, area coverage is big, and furthermore the bearing bed of the sensor network is light, soft, the tensile elongation energy of flex
Enough reach 10 times or more, can be attached to well in the structure of any 3D shape.Therefore can preferably with bullet train key portion
Bit architecture is integrated, under extreme operating environments have stability, to bullet train key position labyrinth have compared with
High adaptability.
2, in a kind of scalable distributed honeycomb flexible sensor network provided by the invention, piezoelectric transducer is adopted
Take honeycomb to arrange, suitable for based on Lamb wave bullet train key position structural damage intellectual monitoring and diagnosis, cooperating
When using Active Lamb Wave technology according to certain timing, progress multichannel scanning, accuracy, the identification that damage differentiates can be improved
The degree of damage preferably overcomes ambient noise, reduces measurement error, solves the problems, such as that boundary damage positions, can reach big model
The effect of the damage intellectual monitoring enclosed.Therefore real-time bullet train key position structural damage Risk-warning can be completed.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows a kind of scalable distributed honeycomb flexible sensor network diagram in embodiment；
Fig. 2 shows the signals of the arrangement process of the scalable distributed honeycomb flexible sensor network of one of embodiment
Figure.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in Figure 1, it is flexible to show a kind of scalable distributed honeycomb in one particular embodiment of the present invention
The schematic diagram of sensor network.A kind of scalable distributed honeycomb flexible sensor network, including bearing bed and arrangement
Sensor on bearing bed.
The bearing bed is to be process using nano-photoetching method to extending polymer.Preferably, of the invention
Kapton can be selected in extending polymer in this embodiment, by using for reference micro-nano processing technology, using photoetching
Method the bearing bed for being processed into extensible flexible network is carried out to extending polymer.Therefore the bearing bed is light, soft,
The tensile elongation of its flex can reach 10 times or more, can be attached to well in the structure of any 3D shape, and area coverage is big,
It is laid out and is easily installed.
The sensor is arranged on the bearing bed with six point type regular hexagons.Using bearing bed as flexible substrate
Layer, is arranged sensor according to honeycomb on the base layer, and form a kind of anthropoid neural network being closely integrated can
Distributed multifunctional sensor network is extended, is then fixed on train composition surface, for train composition damage intelligence
Monitoring and diagnosis.Preferably, which is a kind of six point type regular hexagon structures.
In the present embodiment, the sensor used about the sensor network need to have small in size, light-weight, installation side
Just, response frequency range is wide, the strong feature of plasticity.Preferably, the sensor is piezoelectric transducer.Furthermore the piezoelectricity passes
The node of sensor uses embedded system, has embedded microcontroller, can not only be used for excitation signal device also and can be used as signal connecing
Receive device.
In the present embodiment, the sensor network is fixed on position to be detected.Since the sensor network is used for reference
Micro-nano processing technology construction, using extending polymer as bearing bed, with regular hexagon honeycomb arrangement on flexible substrate layer
Sensor network forms a kind of distributed multifunctional honeycomb flexible sensor net of anthropoid neural network being closely integrated
Network, the node of sensor, which embeds microcontroller, has processing function, is fixed on the surface at position to be detected, energy
Enough train composition damage monitorings and diagnosis being suitable for based on Lamb wave.The sensor bearing bed of designed production is light, soft,
The tensile elongation of its flex can reach 10 times or more, can be attached to well in the structure of any 3D shape, and area coverage is big,
It is laid out and is easily installed.Therefore, when detecting to train key position, it can be well fixed the train in train
The positions such as car body, train bogie and train coupler.Simultaneously with six point type regular hexagon honeycomb placement sensors, it to be used for train
Structure damage monitoring, damage monitoring range is bigger, and can be improved the accuracy that damage differentiates.The sensor network is extreme
There is stability under working environment, there is high-adaptability to train labyrinth.
Further, based on the scalable distributed honeycomb flexible sensor network in the above embodiment of the present invention, such as
Fig. 2 shows the present invention and provides a kind of mounting arrangements flow diagram of flexible sensor.
Firstly, choosing extending polymer, i.e., selection Kapton, reference nano-photoetching processing technology are gathered to described
Imide membrane carries out being processed into bearing bed, then by piezoelectric transducer on flexible substrate layer with regular hexagon honeycomb cloth
It is set to sensor network, size is determined according to the specific structure position of monitoring,
The bogie for being used on detection is chosen, the scalable distributed honeycomb flexible sensor network arranged is fixed
Surface at the easily cracked beam welding of bogie, is accurately damaged using Active Lamb Wave technology and time delay
Triage is surveyed.Obtained result is analyzed it is found that accuracy is higher, the identification of degree of injury is more accurate, and measurement error is smaller, Er Qieke
To orient boundary damage.
The hitch for choosing experiment, is fixed on hitch for the scalable distributed honeycomb flexible sensor network arranged
The surface at easy cracked place carries out accurately damage check using Active Lamb Wave technology and time delay.
The car body for choosing experiment, is fixed on car body for the scalable distributed honeycomb flexible sensor network arranged
The surface at cracked place carries out accurately damage check using Active Lamb Wave technology and time delay.Further, may be used also
The sensor network is fixed on to the damageable zone of draw bar, it is detected also with above-mentioned technological means.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (5)
1. a kind of scalable distributed honeycomb flexible sensor network, which is characterized in that including bearing bed and be arranged in carrying
Sensor on layer,
The bearing bed is process extending polymer using nano-photoetching method；
The sensor is arranged on the bearing bed with six point type regular hexagons.
2. a kind of scalable distributed honeycomb flexible sensor network according to claim 1, which is characterized in that described
Extending polymer is Kapton.
3. a kind of scalable distributed honeycomb flexible sensor network according to claim 1, which is characterized in that described
Sensor is piezoelectric transducer.
4. a kind of scalable distributed honeycomb flexible sensor network according to claim 3, which is characterized in that in institute
The node for stating piezoelectric transducer is embedded with microprocessor using embedded system.
5. the expansible distribution of one kind according to claim 1 is honeycomb flexible sensor network, which is characterized in that described
Sensor network is used to be fixed on the position to be detected of train,
Wherein, the position to be detected includes train body, train bogie, train coupler and draw bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811148306.6A CN109275203A (en) | 2018-09-29 | 2018-09-29 | A kind of scalable distributed honeycomb flexible sensor network |
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| CN201811148306.6A CN109275203A (en) | 2018-09-29 | 2018-09-29 | A kind of scalable distributed honeycomb flexible sensor network |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111190024A (en) * | 2020-02-25 | 2020-05-22 | 济南大学 | Gas flow direction and flow rate detection device based on flexible asymmetric thin film |
| CN111323483A (en) * | 2020-03-20 | 2020-06-23 | 嘉兴博传科技有限公司 | Arrangement method of damage monitoring sensor network of train coupler system |
| CN111904040A (en) * | 2020-09-03 | 2020-11-10 | 昆山联滔电子有限公司 | Heating body and smoking set |
| CN112710735A (en) * | 2020-12-16 | 2021-04-27 | 江苏必得科技股份有限公司 | Lamb wave sensor network and mechanical component crack damage degree detection method |
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| CN111190024A (en) * | 2020-02-25 | 2020-05-22 | 济南大学 | Gas flow direction and flow rate detection device based on flexible asymmetric thin film |
| CN111190024B (en) * | 2020-02-25 | 2021-10-15 | 济南大学 | Gas flow direction and flow rate detection device based on flexible asymmetric thin film |
| CN111323483A (en) * | 2020-03-20 | 2020-06-23 | 嘉兴博传科技有限公司 | Arrangement method of damage monitoring sensor network of train coupler system |
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| CN112710735A (en) * | 2020-12-16 | 2021-04-27 | 江苏必得科技股份有限公司 | Lamb wave sensor network and mechanical component crack damage degree detection method |
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Application publication date: 20190125 |
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