CN2082849U - Piezoelectric ceramic ultrasonic transducer - Google Patents
Piezoelectric ceramic ultrasonic transducer Download PDFInfo
- Publication number
- CN2082849U CN2082849U CN 90219454 CN90219454U CN2082849U CN 2082849 U CN2082849 U CN 2082849U CN 90219454 CN90219454 CN 90219454 CN 90219454 U CN90219454 U CN 90219454U CN 2082849 U CN2082849 U CN 2082849U
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- layers
- utility
- model
- matching
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 238000002604 ultrasonography Methods 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 239000002817 coal dust Substances 0.000 abstract 1
- 239000002360 explosive Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Images
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Abstract
The utility model relates to a piezoelectric ceramic ultrasonic transducer composed of a matching transformer, layers of piezoelectric ceramic sheets, a matching metal block, a radiating metal block and an acoustic resistance matching material layer which is made of foamed plastics. Because the utility model is provided with the matching transformer and the foamed plastics layer, the matching of an electrical impedor and an acoustic impedor is solved. The structure of a plurality of layers of piezoelectric ceramic sheets is adopted. The utility model has the characteristics of large transmitting power, high sensitivity, strong anti-jamming capability, large measurement range, wide application, etc., and can be applied to the dangerous occasions having the explosives of coal dust, combustible gas, etc.
Description
The utility model relates to a kind of piezoelectric ceramic ultrasound transducer.
In recent years, utilize the piezoelectric ceramic ultrasound transducer to find range in various media, detect a flaw, the application of especially finding range, surveying thing position material level in air more and more widely.Yet, because ultrasound wave is decayed very big in air, measurement range is restricted, its basic reason is exactly that transducer itself is not handled through otherwise effective technique, power is big inadequately so general transducer all exists, sensitivity is not high, problems such as antijamming capability is not strong, this has limited the application of piezoelectric ceramic ultrasound transducer aspect range finding widely.
The purpose of this utility model provides that a kind of emissive power is big, highly sensitive, antijamming capability is strong, measurement range is big, has the novel piezo-electric ceramic ultrasonic transducer of extensive practical value.
The purpose of this utility model is achieved in that
1, increase the piezoelectric ceramic piece number of plies for improving emission (or reception) power, promptly piezoelectric ceramic piece adopts sandwich construction, as 2 layers, 4 layers, 6 layers or 8 layers;
2, for reaching the electrical impedance coupling, outer cable links by matching transformer and piezoelectric ceramic piece, and piezoelectric ceramic piece is in parallel with matching transformer, when the two reactance that can make parallel operation of being complementary near pure resistive, thereby strengthen the sensitivity of transducer widely and under identical voltage, can obtain maximum emission (or reception) power;
3, be added with the coupling derby in the piezoelectric ceramic piece both sides, its effect is fastening piezoelectric ceramic piece and makes the acoustic impedance coupling that side coupling derby also is hyperacoustic emission (or reception) utmost point simultaneously, is the radiation metal piece again;
4, be subjected to the influence of impedance when in medium, propagating for reducing transducer emission (or reception) ultrasound wave, be added with acoustic resistance matching materials layer, tygon for example, the foam layer that polypropylene or polyphenyl alkene etc. is made at its emission (or reception) utmost point outside surface.
Below by accompanying drawing and example structure of the present utility model is described further.
Fig. 1 is the utility model piezoelectric ceramic ultrasound transducer master pseudosection, because of transducer is that right cylinder saves vertical view.Among the figure: 1, housing; 2, matching transformer; 3, piezoelectric ceramic piece; 4, coupling derby; 5, radiation metal piece; 6, fastening Luo silk; 7, acoustic resistance matching materials layer (foam layer); 8, insulated enclosure matter; 9, erection bolt; 10, concentric cable.The incoming line that by its circuit part of Fig. 1 the utility model is coaxial wire 10 links by matching transformer and piezoelectric ceramic piece 3 the two poles of the earth; Its structure is by matching transformer 2, piezoelectric ceramic piece 3, coupling derby 4, radiation metal piece 5, acoustic resistance matching materials layer 4 are formed, piezoelectric ceramic piece 3 is clipped between coupling derby 4 and the radiation metal piece 5 and fixes with fastening Luo silk 6, acoustic resistance matching materials layer 7 applies and is bonded at radiation metal piece 5 outsides (emission or receiving plane), above-mentioned parts are put into transducer housing 1 insulated enclosure material after connecting equipment, for example polyurethane rubber or other resin-cast fixing seal, erection bolt 9 is in order to the fixing usefulness of transducer.Its architectural feature of the utility model is that to be stained with acoustic resistance matching materials layer be foam layer for emission (or reception) surface that piezoelectric ceramic piece adopts multilayer (2 layers, 4 layers, 6 layers or 8 layers) structure and radiation metal piece.
The course of work of the present utility model is the emission voltage that adds appropriate frequency by concentric cable 10 to transducer, the matching transformer 2 and piezoelectric ceramic piece 3 impedances that are in resonant condition this moment are very little, so just, can obtain very big emission electric power, this emissive power makes piezoelectric ceramic piece generation deformation vibration, produce very strong ultrasonic signal, this signal is outwards launched by radiation metal piece 5, because applying, radiation metal piece 5 emitting surfaces are stained with acoustic resistance matching layer (foam layer), make the good unofficial biography energy of radiated wave tool effect, blaze abroad even ultrasonic signal is launched in air or other medium expeditiously.Otherwise, as a same reason, when the ultrasonic signal of a certain frequency range is received by radiation metal piece surface, can produce pulse signal at piezoelectric ceramic piece the two poles of the earth and by concentric cable with this electric signal output.
Fig. 1 can be used as an example of the present utility model.
Adopt same design proposal with last example, but it is higher in order to make radiation metal piece 5 transmit the efficient of energy, integral radiation derby 5 can be changed into by the coupling derby, radiation under and metal chassis three partial fixings are combined replacement, the coupling derby only plays acoustic resistance coupling and the effect of fixed voltage potsherd, energy is delivered to metal chassis by the radiation under that is fixed to coupling derby center, concentration of energy is to the emission of metal chassis center like this, make ultrasonic wave energy propagate fartherly, antijamming capability is strengthened, and measurement range increases.Fig. 2 is the transducer master pseudosection after the utility model improves.
Same Fig. 1 of 1～4,6～10 expression meanings among Fig. 2,5, the coupling derby; 11, radiation under; 12, metal chassis; 13, acoustic resistance matching materials layer.
In transducer shown in Figure 2, match block 4,5 is two identical derbies, with fastening Luo silk piezoelectric ceramic piece is fixedly clamped, radiation under 11 is that Metallic rod upper end is connected with match block, lower end and metal chassis 12 centers join and fix, apply cementation jail acoustic resistance matching materials layer 13 in the metal chassis outside, as Fig. 1 homogeneity foam layer.But this foam layer is not flat, but it is circular to become convex-concave to rise and fall, this shape acoustic resistance matching materials layer can make between the ultrasonic beam that the transducer surface of emission sends laterally, and vibrate in opposite phase is able to paraphase, make the ultrasound wave of launching have very high vibration consistance, can reduce energy loss effectively.Fig. 3 is the backplan of Fig. 2, and the circular ring of acoustic resistance matching materials layer 13 can be shown.
The utility model piezoelectric ceramic ultrasonic transducer of above-mentioned two kinds of structures, it is big all to have transmitting power, highly sensitive, and antijamming capability is strong, and measurement category is big, the characteristics such as applied range.
Claims (4)
1, a kind of by coupling transformation, piezoelectric ceramic piece, coupling derby, the piezoelectric ceramic ultrasound transducer that the radiation metal piece constitutes, it is characterized in that piezoelectric ceramic piece adopts sandwich construction, the emitting surface of radiation metal piece is stained with acoustic resistance matching materials layer (foam layer).
2,, it is characterized in that it is that potsherd can adopt 2 layers, 4 layers, 6 layers or 8 layers of structure that multilayer is pressed according to the described transducer of claim 1.
3, according to the described transducer of claim 1, it is characterized in that the radiation metal piece is made up of coupling derby 5, radiation under 11, metal dish 12, radiation under 11 upper ends and match block 5 centers, lower end and metal dish 12 centers join and fix.
4,, it is characterized in that acoustic resistance matching materials layer is a convex-concave circular foam layer that rises and falls according to claim 1,3 described transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90219454 CN2082849U (en) | 1990-09-25 | 1990-09-25 | Piezoelectric ceramic ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90219454 CN2082849U (en) | 1990-09-25 | 1990-09-25 | Piezoelectric ceramic ultrasonic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2082849U true CN2082849U (en) | 1991-08-14 |
Family
ID=4898130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90219454 Expired - Lifetime CN2082849U (en) | 1990-09-25 | 1990-09-25 | Piezoelectric ceramic ultrasonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2082849U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331617C (en) * | 2004-12-24 | 2007-08-15 | 北京信息工程学院 | Novel broad band super sound piezoelectric compound transducer |
| CN101886029A (en) * | 2010-06-12 | 2010-11-17 | 南宁市君厚机电科技有限公司 | Method and device for ultrasonically accelerating production process of medicinal liquor |
| CN101909230A (en) * | 2010-07-15 | 2010-12-08 | 哈尔滨工程大学 | Metal, piezoelectric ceramic and polymer composite broadband underwater acoustic transducer |
| CN102393216A (en) * | 2011-08-02 | 2012-03-28 | 上官明禹 | A method of manufacturing an ultrasonic sensor |
| CN102496361A (en) * | 2011-12-27 | 2012-06-13 | 东南大学 | Ultrasonic wireless energy transmission enhancement device |
| CN103464360A (en) * | 2013-09-22 | 2013-12-25 | 江苏三恒科技股份有限公司 | Ultrasonic transducer for far distance measurement applied to coal mine environment |
| CN103743423A (en) * | 2013-12-20 | 2014-04-23 | 常州波速传感器有限公司 | Novel high-frequency ultrasonic sensor |
| CN103959817A (en) * | 2011-11-28 | 2014-07-30 | 株式会社村田制作所 | Stacked piezoelectric element and resend detection sensor |
| CN104061884A (en) * | 2014-05-30 | 2014-09-24 | 常州市常超电子研究所有限公司 | Thickness measuring probe |
| CN104612613A (en) * | 2015-01-28 | 2015-05-13 | 中国科学院声学研究所 | Piezoelectric type vibration device |
| CN105182141A (en) * | 2015-09-30 | 2015-12-23 | 广州供电局有限公司电力试验研究院 | Transformer fault detection method and system |
| CN106291659A (en) * | 2015-05-19 | 2017-01-04 | 中国石油化工股份有限公司 | The detecting system of saturated fluid reservoir model |
| CN107990924A (en) * | 2017-12-07 | 2018-05-04 | 广东奥迪威传感科技股份有限公司 | A kind of ultrasonic sensor |
-
1990
- 1990-09-25 CN CN 90219454 patent/CN2082849U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331617C (en) * | 2004-12-24 | 2007-08-15 | 北京信息工程学院 | Novel broad band super sound piezoelectric compound transducer |
| CN101886029A (en) * | 2010-06-12 | 2010-11-17 | 南宁市君厚机电科技有限公司 | Method and device for ultrasonically accelerating production process of medicinal liquor |
| CN101909230A (en) * | 2010-07-15 | 2010-12-08 | 哈尔滨工程大学 | Metal, piezoelectric ceramic and polymer composite broadband underwater acoustic transducer |
| CN102393216A (en) * | 2011-08-02 | 2012-03-28 | 上官明禹 | A method of manufacturing an ultrasonic sensor |
| CN103959817B (en) * | 2011-11-28 | 2016-12-14 | 株式会社村田制作所 | Multilayer piezoelectric elements and sensors for refeed detection |
| CN103959817A (en) * | 2011-11-28 | 2014-07-30 | 株式会社村田制作所 | Stacked piezoelectric element and resend detection sensor |
| CN102496361B (en) * | 2011-12-27 | 2013-06-12 | 东南大学 | Ultrasonic wireless energy transmission enhancement device |
| CN102496361A (en) * | 2011-12-27 | 2012-06-13 | 东南大学 | Ultrasonic wireless energy transmission enhancement device |
| CN103464360A (en) * | 2013-09-22 | 2013-12-25 | 江苏三恒科技股份有限公司 | Ultrasonic transducer for far distance measurement applied to coal mine environment |
| CN103743423A (en) * | 2013-12-20 | 2014-04-23 | 常州波速传感器有限公司 | Novel high-frequency ultrasonic sensor |
| CN104061884A (en) * | 2014-05-30 | 2014-09-24 | 常州市常超电子研究所有限公司 | Thickness measuring probe |
| CN104612613A (en) * | 2015-01-28 | 2015-05-13 | 中国科学院声学研究所 | Piezoelectric type vibration device |
| CN104612613B (en) * | 2015-01-28 | 2017-07-28 | 中国科学院声学研究所 | Piezoelectric type vibration device |
| CN106291659A (en) * | 2015-05-19 | 2017-01-04 | 中国石油化工股份有限公司 | The detecting system of saturated fluid reservoir model |
| CN105182141A (en) * | 2015-09-30 | 2015-12-23 | 广州供电局有限公司电力试验研究院 | Transformer fault detection method and system |
| CN107990924A (en) * | 2017-12-07 | 2018-05-04 | 广东奥迪威传感科技股份有限公司 | A kind of ultrasonic sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2082849U (en) | Piezoelectric ceramic ultrasonic transducer | |
| CN101254499B (en) | A Large Opening Angle Stacked Chip Transmitter | |
| CN102071927B (en) | Piezoelectric ceramic electro-acoustic transducer with cylindrical ring structure | |
| CA1236913A (en) | Inspection of the internal portion of objects using ultrasonics | |
| WO2022048058A1 (en) | High-power high-frequency directional transmission underwater acoustic transducer and manufacturing method therefor | |
| CN102843637B (en) | Cylindrical transducer with stacked piezoelectric circular tubes with different internal diameters | |
| CN110707791A (en) | A long-distance high-power underwater wireless charging system based on ultrasonic | |
| CN113964493B (en) | Low-frequency mechanical antenna based on mixed body model source | |
| CN208702403U (en) | A kind of Borehole Wall Ultrasonic Imaging Well Logging energy converter and its measuring system | |
| CN106448644B (en) | An omnidirectional broadband high-power Janus underwater acoustic transducer | |
| CN110010113A (en) | Radial Radiating Janus-Helmholtz Underwater Acoustic Transducers | |
| CN113686972B (en) | Ultrasonic lamination transducer for detecting viscoelastic solid | |
| CN103414987B (en) | Transmitting-receiving transducer based on PVDF and piezoelectric ceramics | |
| Monkhouse et al. | Flexible interdigital PVDF Lamb wave transducers for the development of smart structures | |
| CN111495724B (en) | Radial Sandwich Spherical Piezoelectric Ceramic Composite Ultrasonic Transducer and Transduction Method | |
| CN114939522B (en) | Prestress application system, method and medium for disk-shaped transducer | |
| Qiao et al. | A portable VLF magnetoelectric antenna with high communication rate based on direct antenna amplitude modulation | |
| CN216873384U (en) | Resonant directional sound wave emitter | |
| CN214864994U (en) | Ultrasonic transducer | |
| RU27768U1 (en) | MULTI-ELEMENT HYDROACOUSTIC ANTENNA | |
| US3243769A (en) | Distributed coupling transducer | |
| KR20010092834A (en) | Sonic piezoelectric ceramic transducer | |
| EP1849195A2 (en) | Multi-layer gas matrix piezoelectric composite transducer | |
| CN115641831A (en) | An underwater sound-absorbing superstructure with piezoelectric shunt damping | |
| CN115582263A (en) | Medical ultrasonic knife transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |