CN102208920A - Long line transmission device for ultrasonic probe - Google Patents
Long line transmission device for ultrasonic probe Download PDFInfo
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- CN102208920A CN102208920A CN2011101330471A CN201110133047A CN102208920A CN 102208920 A CN102208920 A CN 102208920A CN 2011101330471 A CN2011101330471 A CN 2011101330471A CN 201110133047 A CN201110133047 A CN 201110133047A CN 102208920 A CN102208920 A CN 102208920A
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- ultrasonic probe
- transformer
- ultrasonic
- impedance matching
- capacitor
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a long line transmission device for an ultrasonic probe. An ultrasonic signal transmitting circuit is connected with a coupling input end of a transformer, a coupling output end of the transformer is connected with an impedance matching circuit, and an output end of the matching circuit is connected with the ultrasonic probe through a twisted pair cable; and the impedance matching circuit comprises a transformer T1, a capacitor C1, a capacitor C2, a voltage sensitive resistor R1, an inductor L1, an inductor L2 and a resistor R2. An ultrasonic probe transmitting circuit provided by the invention adopts an impedance matching method, the transmission loss of ultrasonic signals is reduced, and energy efficiency is increased. The ultrasonic probe transmitting circuit is connected with an energy converter through the twisted pair cable, and the interference resistance of the ultrasonic probe is increased. The ultrasonic probe transmitting circuit realizes the long line transmission problem of the ultrasonic signals. In the actual application process in the traffic flow investigation field, man power and material resources are greatly reduced, and the construction cost is reduced.
Description
Technical field
The present invention relates to a kind of ultrasonic probe device, be specifically related to the device of the long line transmission of a kind of ultrasonic signal.
Background technology
The ultrasonic probe circuit arrangement that the present invention relates to belongs to an a kind of part of traffic flow investigation instrument, serves the traffic flow investigation field.In the Modern High-Speed circuit design, the impedance matching in the long line transmission is a very important engineering index, can make ultrasonic signal reach the purpose that reaches load, does not return source point and do not have signal reflex, thereby promotes the drive circuit source benefit.And in present traffic flow investigation field, undertaken by ultrasonic wave in the instrument of wagon flow quantitative statistics, ultrasonic probe and whole probe circuit are one, and the traffic flow investigation instrument is mounted in five or six meters aerial, both be unfavorable for installing, simultaneously the maintenance work after installing caused great difficulty.
Summary of the invention
At the shortcoming and defect of prior art, the invention provides a kind of loss that reduces ultrasonic signal, improve the anti-interference of ultrasonic probe, reduce the long line transmitting device of the ultrasonic signal of construction cost.
Purpose of the present invention is achieved through the following technical solutions, a kind of long line transmitting device of ultrasonic probe, it is characterized in that: the ultrasonic signal radiating circuit connects transformer coupled input, transformer coupled output connects impedance matching circuit, and the match circuit output connects ultrasonic probe by twisted-pair feeder; Impedance matching circuit is made up of transformer T1, capacitor C 1, capacitor C 2, piezo-resistance R1, inductance L 1, inductance L 2 and resistance R 2, and its annexation is: the input of transformer is a termination power Vcc wherein, other end input square-wave signal; An output of transformer is connected with twisted-pair feeder by inductance L 1, is connected with an end of capacitor C 2 simultaneously; Another output of transformer is connected by the other end of resistance R 2 with capacitor C 2, is connected with twisted-pair feeder with inductance L 2 by resistance R 2.
Beneficial effect of the present invention:
1, the ultrasonic probe radiating circuit of the present invention's design adopts the method for impedance matching, has reduced the loss of ultrasonic signal, has promoted source benefit.
2, the ultrasonic probe radiating circuit of the present invention's design is connected with transducer by twisted-pair feeder, has improved the anti-interference of ultrasonic probe.
3, the ultrasonic probe radiating circuit of the present invention's design has been realized the long line transmission problem of ultrasonic signal, in the actual application in traffic flow investigation field, has significantly reduced manpower and materials, has reduced construction cost.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is a ultrasonic probe radiating circuit schematic diagram of the present invention.
Embodiment
The present invention is described in further detail in conjunction with the accompanying drawings.
A kind of long line transmitting device of ultrasonic probe, its structured flowchart as shown in Figure 1.By twisted-pair feeder transmission ultrasonic signal, realize that by design the long line of ultrasonic signal transmits simultaneously between ultrasonic probe radiating circuit and the probe to the impedance matching of radiating circuit; The signal that the ultrasonic signal radiating circuit sends is by the transformer coupled impedance matching circuit that is input to; Impedance matching circuit carries out filtering to the signal of input and the capacitive reactances that transducer produces is compensated, and finishes impedance matching.
The long line transmitting device circuit of ultrasonic probe as shown in Figure 2, square-wave signal is input to impedance matching circuit by transformer coupled formation sine wave, advances the processing of impedance matching circuit, signal is transferred to ultrasonic probe by twisted-pair feeder.Wherein, reached the reflection of minimizing high-frequency signal, realized the purpose of the long line transmission of ultrasonic signal the design of impedance matching circuit.
Impedance matching circuit in the long line transmitting device of ultrasonic probe is made up of transformer T1, capacitor C 1, capacitor C 2, piezo-resistance R1, inductance L 1, inductance L 2 and resistance R 2.Its annexation is: the input of transformer is a termination power Vcc wherein, other end input square-wave signal; An output of transformer is connected with twisted-pair feeder by inductance L 1, is connected with an end of capacitor C 2 simultaneously; Another output of transformer is connected by the other end of resistance R 2 with capacitor C 2, is connected with twisted-pair feeder with inductance L 2 by resistance R 2; The signal output part of match circuit is connected to the conventional ultrasonic probe that uses by twisted-pair feeder.
Above-mentioned impedance matching circuit, because high-power piezoelectric ultrasonic transducer works in single-frequency, so the matching Problems in Ultrasonic Transducer circuit must have the function of shaping and filtering.Capacitor C 1 is connected with inductance L 1, forms series LC resonance, and the signal by transformer coupled output is carried out filtering.Piezo-resistance R1 is used for overvoltage protection in the match circuit, resistance R 2 is used for overcurrent protection.By the connection in series-parallel between capacitor C 2, inductance L 2 and the transducer load is designed, impedance to transducer compensates, make the electrical impedance of transducer reach the optimum load impedance of supersonic generator, realize the impedance conversion of impedance matching circuit, reach the maximum output of circuit.The signal of match circuit output is transferred to ultrasonic probe by twisted-pair feeder, can reduce the degree that signal disturbs with the twisted-pair feeder transmission signals.
Concrete operation principle of the present invention: described impedance matching circuit carries out Filtering Processing to the signal of input, connection in series-parallel by electric capacity and inductance and transducer simultaneously designs, impedance to transducer compensates, make the impedance of transducer reach the optimum load impedance of supersonic generator, reach the maximum output of circuit, the signal that the twisted-pair feeder transmission of disturbing with anti-signal is simultaneously launched is realized the long line transmission of ultrasonic signal.
Claims (1)
1. the long line transmitting device of a ultrasonic probe, it is characterized in that: the ultrasonic signal radiating circuit connects transformer coupled input, and transformer coupled output connects impedance matching circuit, and the match circuit output connects ultrasonic probe by twisted-pair feeder; Impedance matching circuit is made up of transformer T1, capacitor C 1, capacitor C 2, piezo-resistance R1, inductance L 1, inductance L 2 and resistance R 2, and its annexation is the input termination power Vcc wherein of transformer, other end input square-wave signal; An output of transformer is connected with twisted-pair feeder by inductance L 1, is connected with an end of capacitor C 2 simultaneously; Another output of transformer is connected by the other end of resistance R 2 with capacitor C 2, is connected with twisted-pair feeder with inductance L 2 by resistance R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101330471A CN102208920A (en) | 2011-05-23 | 2011-05-23 | Long line transmission device for ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101330471A CN102208920A (en) | 2011-05-23 | 2011-05-23 | Long line transmission device for ultrasonic probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102208920A true CN102208920A (en) | 2011-10-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101330471A Pending CN102208920A (en) | 2011-05-23 | 2011-05-23 | Long line transmission device for ultrasonic probe |
Country Status (1)
| Country | Link |
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| CN (1) | CN102208920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749109A (en) * | 2012-07-11 | 2012-10-24 | 浙江大学 | Aftershock energy control-based method for reducing working blind areas of ultrasonic energy transducer |
| CN107453020A (en) * | 2016-05-30 | 2017-12-08 | 中国石油化工股份有限公司 | A kind of matching reception device with brill electromagnetic wave reception antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855847A (en) * | 1972-06-20 | 1974-12-24 | Westinghouse Electric Corp | Acoustic emission transducer and monitoring system |
| US6100772A (en) * | 1998-11-16 | 2000-08-08 | Bh Electronics, Inc. | High frequency test balun with a capacitor across the output |
| CN2710289Y (en) * | 2003-11-04 | 2005-07-13 | 惠州Tcl移动通信有限公司 | Mobile phone antenna circuit |
| CN101644767A (en) * | 2009-05-15 | 2010-02-10 | 中国科学院声学研究所 | Underwater sonar transmitter |
| CN101881157A (en) * | 2010-05-27 | 2010-11-10 | 中国水电顾问集团北京勘测设计研究院 | Sound wave well logging transducer |
| CN202085162U (en) * | 2011-05-23 | 2011-12-21 | 辽宁金洋集团信息技术有限公司 | Long wire transmission apparatus of ultrasonic probe |
-
2011
- 2011-05-23 CN CN2011101330471A patent/CN102208920A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855847A (en) * | 1972-06-20 | 1974-12-24 | Westinghouse Electric Corp | Acoustic emission transducer and monitoring system |
| US6100772A (en) * | 1998-11-16 | 2000-08-08 | Bh Electronics, Inc. | High frequency test balun with a capacitor across the output |
| CN2710289Y (en) * | 2003-11-04 | 2005-07-13 | 惠州Tcl移动通信有限公司 | Mobile phone antenna circuit |
| CN101644767A (en) * | 2009-05-15 | 2010-02-10 | 中国科学院声学研究所 | Underwater sonar transmitter |
| CN101881157A (en) * | 2010-05-27 | 2010-11-10 | 中国水电顾问集团北京勘测设计研究院 | Sound wave well logging transducer |
| CN202085162U (en) * | 2011-05-23 | 2011-12-21 | 辽宁金洋集团信息技术有限公司 | Long wire transmission apparatus of ultrasonic probe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749109A (en) * | 2012-07-11 | 2012-10-24 | 浙江大学 | Aftershock energy control-based method for reducing working blind areas of ultrasonic energy transducer |
| CN107453020A (en) * | 2016-05-30 | 2017-12-08 | 中国石油化工股份有限公司 | A kind of matching reception device with brill electromagnetic wave reception antenna |
| CN107453020B (en) * | 2016-05-30 | 2019-10-29 | 中国石油化工股份有限公司 | A kind of matching reception device with brill electromagnetic wave receiving antenna |
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Application publication date: 20111005 |