CN106225742A - A kind of strain transducer based on slot-coupled microstrip antenna - Google Patents
A kind of strain transducer based on slot-coupled microstrip antenna Download PDFInfo
- Publication number
- CN106225742A CN106225742A CN201610693859.4A CN201610693859A CN106225742A CN 106225742 A CN106225742 A CN 106225742A CN 201610693859 A CN201610693859 A CN 201610693859A CN 106225742 A CN106225742 A CN 106225742A
- Authority
- CN
- China
- Prior art keywords
- metal
- basic unit
- microstrip antenna
- strain transducer
- medium basic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/06—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring the deformation in a solid
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Waveguide Aerials (AREA)
Abstract
A kind of strain transducer based on slot-coupled microstrip antenna, this strain transducer is made up of three-layer metal conductor layer and two layer medium basic unit, metal patch is the core component of whole strain transducer, metal patch is arranged on the center of medium basic unit, and the upper surface laminating of the lower surface of metal patch and medium basic unit, the upper surface laminating of the lower surface of medium basic unit and metal ground plate, air gap is positioned in metal ground plate, the lower surface laminating of the upper surface of medium basic unit and metallic plate earth plate, the lower surface laminating of the upper surface of metal feeder and medium basic unit.Metal feeder is connected with Network Analyzer by SMA adaptor, it is achieved the frequency detecting of pair of strain sensors.Compared with slot-coupled microstrip antenna band non-with tradition antenna, bandwidth broadens, strain detecting scope becomes big, eliminates the interference of the parasitic radiation that conventional microstrip antenna structure brings, and remains the features such as the lightweight and portable in volume of microstrip antenna, low cost, highly sensitive, real-time monitoring.
Description
Technical field
The present invention designs a kind of strain transducer based on slot-coupled microstrip antenna, and the method is mainly used in slot-coupled
The microstrip antenna detection to strain, relates to structural health monitoring technology and technical field of nondestructive testing.
Background technology
Modal carrying structure in high-end equipment (as aviation, ocean engineering, intelligence manufacture etc. are equipped), at long service
During the impact of loaded and self-defect usually can produce fine crack, and the most gradually extend, finally cause structure
Lost efficacy, brought about great losses.If crackle can be detected early and repairs, it will avoid the generation of a lot of accident.At knot
In structure health monitoring, find that crack is always extremely important problem the most as early as possible.Crackle usually starts at stress raiser, because of
This arranges strain transducer at key position, the sign of early fatigue fracture can be detected, prevent trouble before it happens.
Traditional strain measurement technique error is big, cost is high, complex operation, the testing time is oversize and needs professional test
The subject matters such as personnel are difficult to meet the requirement of people.Existing sensor technology, including Fibre Optical Sensor, metal forming strain gauge,
Or ultrasonic examination, needing of having structurally lays tediously long cable to ensure data transmission credibility；Some areas of coverage
Territory is the least makes its deployment cost too high, is not appropriate for large-scale use；Have needs manual operation, is unfavorable for long-time real-time
Monitoring.And be arranged on the detecting system of pile, when system scale increases further, the growth of its cost considerably beyond
Linear scale.In civil buildings, not only there is problems, the structures such as aircraft, vehicle, naval vessel there is also cable and install
The problem too high with maintenance cost.Thus seek a kind of life-span length, low cost, the strain detecting method of the requirement such as simple to operate,
There is great theory significance and engineering practical value.
The rise intersected along with ambit, the antenna design method in microwave regime can apply in Non-Destructive Testing
Strain measurement.Research shows that the resonant frequency of antenna is closely related with own dimensions, when it produces deformation, in microstrip antenna
Frequency of heart can occur to offset accordingly, and this makes to utilize microstrip antenna to measure strain and is possibly realized.Strain based on microstrip antenna
Sensor overcomes the deficiency of traditional resistive strain transducer, can realize the strain detecting of twocouese；Particularly slot-coupled
Microstrip antenna improves on the basis of existing microstrip antenna structure, has expanded detection bandwidth, thus has expanded strain detecting
Scope, have lightweight and portable in volume, low cost, highly sensitive, the features such as real-time monitoring can be carried out.
Summary of the invention
It is an object of the invention to provide a kind of strain transducer based on slot-coupled microstrip antenna, have low cost,
Simple structure, simple to operate, can time monitoring and other advantages, the needs of experimental analysis can be met completely.
For achieving the above object, the technical solution used in the present invention is that a kind of strain based on slot-coupled microstrip antenna passes
Sensor, this strain transducer is made up of three-layer metal conductor layer and two layer medium basic unit, and the present invention contains such as lower component: metal
Paster 1, medium basic unit 2, air gap 3, metal ground plate 4, medium basic unit 5, metal feeder 6.
The integral installation figure of slot-coupled microstrip antenna strain transducer is as it is shown in figure 1, sensor internal structural representation
As shown in Figure 2.
Metal patch 1 is the core component of whole strain transducer, and metal patch 1 is arranged on the centre bit of medium basic unit 2
Put, and the upper surface laminating of the lower surface of metal patch 1 and medium basic unit 2, the lower surface of medium basic unit 2 and metal ground plate 4
Upper surface laminating, air gap 3 is positioned in metal ground plate 4, the upper surface of medium basic unit 5 and metallic plate earth plate 3 times
Fit in surface, the lower surface laminating of the upper surface of metal feeder 6 and medium basic unit 5.Metal feeder 6 is by SMA adaptor and net
Network analyser is connected, it is achieved the frequency detecting of pair of strain sensors.
Metal patch 1 and medium basic unit 2 determine the resonant frequency of strain transducer, and resonant frequency is the highest, strain sensing
The sensitivity of device is the highest.Metal patch 1, metal ground plate 4 and metal feeder 6 are conductor, medium basic unit 2 and medium basic unit 5
For insulant.
A length of 5mm～40mm of metal patch 1, width is 4mm～30mm, and thickness is 0.035mm～0.05mm.
Medium basic unit 2 is insulant, its a length of 20mm～120mm, and width is 15mm～90mm, and thickness is 0.05mm
～2mm.
A length of 20mm～120mm of metal ground plate 4, width is 15mm～90mm, and thickness is 0.05mm～2mm.
A length of 2mm～20mm of air gap 3, width is 0.1mm～1.6mm.
A length of 20mm～120mm of medium basic unit 5, width is 15mm～90mm, and thickness is 0.05mm～2mm.
A length of 5mm～80mm of metal feeder 6, width range is 1mm～6mm, thickness range at 0.035mm～
0.05mm。
Slot-coupled microstrip antenna has two kinds of fundamental resonance mode: direction of an electric field is parallel to metal patch 1 length direction
TM10Mode and direction of an electric field are parallel to the TM of metal patch 1 width01Mode, the resonance frequency that two kinds of radiation modes are corresponding
Rate is respectively f10And f01, therefore this sensor can provide the strain detecting in two mutually perpendicular directions simultaneously, and traditional
Resistance strain gage can only provide the strain detecting of single direction.Compared with slot-coupled microstrip antenna band non-with tradition antenna, bandwidth
Broadening, strain detecting scope becomes big, eliminates the interference of the parasitic radiation that conventional microstrip antenna structure brings, and remains micro-
The features such as lightweight and portable in volume with antenna, low cost, highly sensitive, real-time monitoring.
Accompanying drawing explanation
Fig. 1 sensor integral installation figure；
Fig. 2 sensor broken section structural representation；
Fig. 3 sensor front view；
The metal ground plate top view of Fig. 4 band air gap；
Fig. 5 frequency range is at the return loss figure of 1.5GHz～3.5GHz；
Detailed description of the invention
With a sensor instance, specific embodiment is further described below.Sensor medium basic unit 2, Jie
The material of matter basic unit 5 all selects Rogers RT druid 5880 (tm), and metal patch 1, metal ground plate 4, metal feeder 6 are equal
Select Copper Foil as material.
The core component of whole sensor is metal patch 1, the lower surface of metal patch 1 and the upper surface of medium basic unit 2
Laminating, a length of 40mm of metal patch 1, width is 30mm, and thickness is 0.05mm.The a length of 120mm of medium basic unit 2, width
For 90mm, thickness is 1.7mm.The upper surface laminating of the lower surface of medium basic unit 2 and metal ground plate 4, the length of metal ground plate 4
Degree is 120mm, and width is 90mm, and thickness is 0.05mm.Air gap 3 is positioned at metal ground plate 4 center, air gap 3
A length of 18mm, width is 1.55mm.The lower surface laminating of the upper surface of medium basic unit 5 and metallic plate earth plate 3, medium basic unit
The a length of 120mm of 5, width is 90mm, and thickness is 1.7mm.The upper surface of metal feeder 6 pastes with the lower surface of medium basic unit 5
Closing, a length of 70mm of metal feeder 6, width range is 4.95mm, and thickness range is at 0.05mm.
Return loss figure during working sensor is as it is shown in figure 5, the resonant frequency of sensor is at 2.25GHz.Return loss
S11Minimum point be coupling slot antenna resonant frequency point.Sensor metal feeder 6 is bonded in be concentrated by the strain of geodesic structure
Place.Owing to this sensor is conformal with carrier, when tested structure stress deformation, the size of sensor changes, humorous
Vibration frequency can change, and can characterize structure institute by the measurement to gap coupled microstrip antenna resonant frequency knots modification
The strain being subject to.
The sensor bulk of present invention design is light, flexible for installation, cost is relatively low, reliability is high, and can realize answering
The real-time monitoring become.
Claims (8)
1. a strain transducer based on slot-coupled microstrip antenna, this strain transducer is by three-layer metal conductor layer and two-layer
Medium basic unit forms, it is characterised in that: this strain transducer metal patch (1), medium basic unit (2), air gap (3), metal
Earth plate (4), medium basic unit (5), metal feeder (6)；
Metal patch (1) is the core component of whole strain transducer, and metal patch (1) is arranged on the center of medium basic unit (2)
Position, and the upper surface laminating of the lower surface of metal patch (1) and medium basic unit (2), the lower surface of medium basic unit (2) and metal
The upper surface laminating of earth plate (4), air gap (3) is positioned in metal ground plate (4), the upper surface of medium basic unit (5) and gold
Belong to the lower surface laminating of plate earthing plate 3, the lower surface laminating of the upper surface of metal feeder (6) and medium basic unit (5)；Metal feeder
(6) it is connected with Network Analyzer by SMA adaptor, it is achieved the frequency detecting of pair of strain sensors；
Metal patch (1) and medium basic unit (2) determine the resonant frequency of strain transducer, and resonant frequency is the highest, strain sensing
The sensitivity of device is the highest；Metal patch (1), metal ground plate (4) and metal feeder (6) are conductor, medium basic unit (2) and Jie
Matter basic unit (5) is insulant.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: metal
A length of 5mm～40mm of paster (1), width is 4mm～30mm, and thickness is 0.035mm～0.05mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: medium
Basic unit (2) is insulant, its a length of 20mm～120mm, and width is 15mm～90mm, and thickness is 0.05mm～2mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: metal
A length of 20mm～120mm of earth plate (4), width is 15mm～90mm, and thickness is 0.05mm～2mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: air
Gap (3) a length of 2mm～20mm, width is 0.1mm～1.6mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: medium
A length of 20mm～120mm of basic unit (5), width is 15mm～90mm, and thickness is 0.05mm～2mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: metal
Feeder line (6) a length of 5mm～80mm, width range is 1mm～6mm, and thickness range is at 0.035mm～0.05mm.
A kind of strain transducer based on slot-coupled microstrip antenna the most according to claim 1, it is characterised in that: gap
Coupled microstrip antenna has two kinds of fundamental resonance mode: direction of an electric field is parallel to the TM of metal patch (1) length direction10Mode and
Direction of an electric field is parallel to the TM of metal patch (1) width01Mode, resonant frequency corresponding to both modalities which is respectively f10With
f01, therefore this sensor provides the strain detecting in two mutually perpendicular directions simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693859.4A CN106225742A (en) | 2016-08-19 | 2016-08-19 | A kind of strain transducer based on slot-coupled microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610693859.4A CN106225742A (en) | 2016-08-19 | 2016-08-19 | A kind of strain transducer based on slot-coupled microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106225742A true CN106225742A (en) | 2016-12-14 |
Family
ID=57554193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610693859.4A Pending CN106225742A (en) | 2016-08-19 | 2016-08-19 | A kind of strain transducer based on slot-coupled microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106225742A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367247A (en) * | 2017-06-09 | 2017-11-21 | 北京工业大学 | A kind of frequency multiplier type micro-strip paster antenna strain transducer |
| CN108180820A (en) * | 2017-12-30 | 2018-06-19 | 北京工业大学 | A kind of omnidirectional's strain detecting method based on Circular microstrip patch antenna |
| CN108918650A (en) * | 2018-05-18 | 2018-11-30 | 武汉理工大学 | Monitor the passive and wireless paster antenna sensor of bead crack |
| CN110672045A (en) * | 2019-10-18 | 2020-01-10 | 贵州民族大学 | Structural deformation detection sensor, detection system and detection method |
| CN111262002A (en) * | 2020-01-21 | 2020-06-09 | 深圳市易探科技有限公司 | Slot coupling microstrip antenna for 24GHz mobile sensor |
| CN112254760A (en) * | 2020-09-23 | 2021-01-22 | 武汉理工大学 | Strain crack decoupling measurement sensor based on multilayer microstrip antenna |
| CN113108685A (en) * | 2021-04-12 | 2021-07-13 | 吉林大学 | Material-reducing dual-frequency differential type microstrip antenna strain sensor and method |
| CN113251961A (en) * | 2021-04-26 | 2021-08-13 | 杭州电子科技大学 | Microwave displacement sensor based on coupling microstrip line |
| CN114543652A (en) * | 2022-02-22 | 2022-05-27 | 上海应用技术大学 | Flexible strain layered sensor for numerical control machine rolling bearing |
| CN114814292A (en) * | 2022-02-28 | 2022-07-29 | 同济大学 | Acceleration sensor and sensing system based on variable thickness air gap patch antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06232626A (en) * | 1993-02-02 | 1994-08-19 | A T R Koudenpa Tsushin Kenkyusho:Kk | Slot coupling type microstrip antenna |
| CN102130376A (en) * | 2011-01-26 | 2011-07-20 | 浙江大学 | Microstrip slot coupling fed triple-frequency dielectric resonant antenna |
| CN202957346U (en) * | 2012-12-19 | 2013-05-29 | 成都信息工程学院 | Micro-strip slot antenna |
| CN103344201A (en) * | 2013-06-09 | 2013-10-09 | 西安交通大学 | Strain sensor of micro-strip antenna |
| CN104577316A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院上海微系统与信息技术研究所 | Vertical coupled feeding structure applied to millimeter-wave microstrip antenna |
| CN105870619A (en) * | 2016-05-19 | 2016-08-17 | 华南理工大学 | Differential filtering microstrip array antenna having high common-mode rejection |
-
2016
- 2016-08-19 CN CN201610693859.4A patent/CN106225742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06232626A (en) * | 1993-02-02 | 1994-08-19 | A T R Koudenpa Tsushin Kenkyusho:Kk | Slot coupling type microstrip antenna |
| CN102130376A (en) * | 2011-01-26 | 2011-07-20 | 浙江大学 | Microstrip slot coupling fed triple-frequency dielectric resonant antenna |
| CN202957346U (en) * | 2012-12-19 | 2013-05-29 | 成都信息工程学院 | Micro-strip slot antenna |
| CN103344201A (en) * | 2013-06-09 | 2013-10-09 | 西安交通大学 | Strain sensor of micro-strip antenna |
| CN104577316A (en) * | 2014-12-30 | 2015-04-29 | 中国科学院上海微系统与信息技术研究所 | Vertical coupled feeding structure applied to millimeter-wave microstrip antenna |
| CN105870619A (en) * | 2016-05-19 | 2016-08-17 | 华南理工大学 | Differential filtering microstrip array antenna having high common-mode rejection |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367247A (en) * | 2017-06-09 | 2017-11-21 | 北京工业大学 | A kind of frequency multiplier type micro-strip paster antenna strain transducer |
| CN108180820A (en) * | 2017-12-30 | 2018-06-19 | 北京工业大学 | A kind of omnidirectional's strain detecting method based on Circular microstrip patch antenna |
| CN108918650A (en) * | 2018-05-18 | 2018-11-30 | 武汉理工大学 | Monitor the passive and wireless paster antenna sensor of bead crack |
| CN110672045A (en) * | 2019-10-18 | 2020-01-10 | 贵州民族大学 | Structural deformation detection sensor, detection system and detection method |
| CN111262002A (en) * | 2020-01-21 | 2020-06-09 | 深圳市易探科技有限公司 | Slot coupling microstrip antenna for 24GHz mobile sensor |
| CN112254760A (en) * | 2020-09-23 | 2021-01-22 | 武汉理工大学 | Strain crack decoupling measurement sensor based on multilayer microstrip antenna |
| CN113108685A (en) * | 2021-04-12 | 2021-07-13 | 吉林大学 | Material-reducing dual-frequency differential type microstrip antenna strain sensor and method |
| CN113108685B (en) * | 2021-04-12 | 2022-02-08 | 吉林大学 | Material-reducing dual-frequency differential type microstrip antenna strain sensor and method |
| CN113251961A (en) * | 2021-04-26 | 2021-08-13 | 杭州电子科技大学 | Microwave displacement sensor based on coupling microstrip line |
| CN114543652A (en) * | 2022-02-22 | 2022-05-27 | 上海应用技术大学 | Flexible strain layered sensor for numerical control machine rolling bearing |
| CN114814292A (en) * | 2022-02-28 | 2022-07-29 | 同济大学 | Acceleration sensor and sensing system based on variable thickness air gap patch antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106225742A (en) | A kind of strain transducer based on slot-coupled microstrip antenna | |
| Giurgiutiu | Structural health monitoring (SHM) of aerospace composites | |
| Ahmed et al. | Advancements in fiber-reinforced polymer composite materials damage detection methods: Towards achieving energy-efficient SHM systems | |
| Kong et al. | A novel embeddable spherical smart aggregate for structural health monitoring: Part I. Fabrication and electrical characterization | |
| US9068929B2 (en) | Capacitance-based system health monitoring system, apparatus and method for layered structure | |
| US7281428B2 (en) | Diagnostic system for monitoring structural health conditions | |
| US7434480B2 (en) | Methods and systems for using active surface coverings for structural assessment and monitoring | |
| AU2011251732B2 (en) | RF reflection for inspecting composite materials | |
| Sun et al. | A methodological review of piezoelectric based acoustic wave generation and detection techniques for structural health monitoring | |
| US7536912B2 (en) | Flexible diagnostic patches for structural health monitoring | |
| US20090157358A1 (en) | System for diagnosing and monitoring structural health conditions | |
| US10099791B2 (en) | Magnetostrictive multi-frequency guided wave ice sensing probe | |
| CA2943064C (en) | Transducer for ultrasonic flow meter | |
| Kannusamy et al. | Accurate baseline-free damage localization in plates using refined Lamb wave time-reversal method | |
| CN103388378B (en) | Based on the intelligent reinforcing bar and preparation method thereof of piezoceramics crystal | |
| CN103344652A (en) | Crack detection sensor based on microstrip antenna and detection method thereof | |
| CN106257250B (en) | Sensor system for laminated structures | |
| CN108548718A (en) | Crack Propagation monitoring system based on microstrip antenna sensor and its monitoring method | |
| CN107367247A (en) | A kind of frequency multiplier type micro-strip paster antenna strain transducer | |
| WO2011081526A1 (en) | Method and system for detecting faults in laminated structures | |
| US11150221B2 (en) | Sensor system | |
| Todoroki et al. | Self-sensing curved micro-strip line method for damage detection of CFRP composites | |
| CN210487468U (en) | Device for monitoring width of concrete tensile crack and automatically positioning area | |
| Gresil et al. | Acousto-ultrasonic Structural Health Monitoring of aerospace composite materials | |
| KR20190123117A (en) | Ohm Sensor using Pencil and Making Method of the Same and Damage Mapping Apparatus having the Same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |