CN106556641A - A kind of XC6S type control systems of NEXT series of products - Google Patents
A kind of XC6S type control systems of NEXT series of products Download PDFInfo
- Publication number
- CN106556641A CN106556641A CN201510634544.8A CN201510634544A CN106556641A CN 106556641 A CN106556641 A CN 106556641A CN 201510634544 A CN201510634544 A CN 201510634544A CN 106556641 A CN106556641 A CN 106556641A
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- digital
- signal
- data acquisition
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of XC6S type control systems of NEXT series of products, the system is constituted by module, transmitting transducer, receive transducer, echo reception module, data acquisition module, data communication module, digital control module is motivated by ultrasound, digital control module is used for the Digital Signal Processing of system, its outfan is unidirectionally connected with the input of ultrasonic action module and echo reception module respectively, and digital control module is bi-directionally connected with data acquisition module, data communication module simultaneously；Receive transducer is unidirectionally connected with echo reception module, and echo reception module is unidirectionally connected with data acquisition module, and the ultrasonic signal for receiving is passed to echo reception module and passes to data acquisition module again by receive transducer；Data acquisition module is used to gather useful digital signal, and holding letter is bi-directionally connected between data communication module and host computer.
Description
Technical field
The invention belongs to the concrete application of ultrasound detection control field, more particularly to a kind of XC6S type control systems of NEXT series of products.
Background technology
Ultrasonic detecting technology is compared with other conventional Dynamic Non-Destruction Measurements, wide with measurand scope, and detection depth is big；Accurately, detection sensitivity is high for defect location；Low cost, it is easy to use；Speed is fast, harmless and the characteristics of be easy to onsite application.In recent decades, ultrasonic detecting technology achieves huge advance, consequence is established, technology reaches its maturity, all industry and medical department are penetrated into almost, the steel and iron industry of industry, machine industry, building industry, petrochemical industry, railway transportation industry, shipbuilding industry, aerospace industry, the new technological industry in high speed development such as integrated circuit industry, Nuclear Power Industry and medical diagnosiss department as based on.
Since the sixties in 20th century, the progress of electronic design technology and the raising of probe resolution, improvement for detecting system and further application lay the foundation, make ultrasound detection control system have larger improvement in the performance of impulse ejection, amplifier gain, linearity characteristic, drastically increase the reliability and credibility of ultrasonic testing results.With the development and the raising of computing power price ratio of computer technology, computer utility is made to be possibly realized in ultrasonic automatic detection signal process field, while the research for digital ultrasound detection control system is laid a good foundation.Digital ultrasound detection control system has followed the basic model and function of simulation detection system, realize automatic reading, automatically automatic identification, compensation, the function of showing and store of defective data simultaneously using microprocessor, with strong antijamming capability, dynamic range it is big, it is easy to use the characteristics of, the record of defect can not only be solved the problems, such as, and personal error is reduced, improve the reliability of result of detection.
Currently, direction of the ultrasound detection control system just towards systematization, intellectuality, miniaturization is developed in the world, the company of external some productions and research ultrasound detection instrument is walked in these areas in prostatitis, wherein with the Kraut Kramer companies of Germany, the sonar of Britain（SONATEST）Company, the Pan American in the U.S.（PANAMETRICS）Company and general（GE）Company, the Olympus Corp of Japan product it is most representative, the technical merit of the ultrasound detection control system of above-mentioned these companies production in terms of data acquisition, analysis and imaging processing is higher, and be in a leading position level in the world.Although recent year is achieved in terms of digitalized ultrasonic detecting instrument developing on a large scale very much, however, the Related product on current domestic and international market is expensive, and open degree is very low, carries out Related Experimental Study to scientific research personnel and causes many restrictions.Therefore, it is contemplated that developing the ultrasound detection control system of a set of perfect in shape and function, to improve reliability, motility and the economy and automaticity of ultrasound detection.
The present invention develops the XC6S type control systems of a set of function comparatively perfect and the metastable NEXT series of products of performance on the basis of Ultrasonic NDT control technology with electronic technology.The system can be applied to component residual stress ultrasound detection field with PC as carrier, and its main attainable function has：Ultrasonic action function, echo signal processing function, data acquisition function and host computer carry out data communication function and digital control function.
The content of the invention
In order to further solve the problems, such as on domestic and international market that associated ultrasonic detecting and controlling system is expensive, open degree is very low.It is an object of the invention to provide a kind of based on the multiple functional of FPGA, the XC6S type control systems of high degree of automation, the invention have simple structure, real-time, high degree of automation, it is with low cost the characteristics of.
In order to realize said system, the present invention is adopted the technical scheme that：
The XC6S type control systems of a kind of NEXT series of products, it is characterised in that the system is constituted by module, transmitting transducer, receive transducer, echo reception module, data acquisition module, data communication module, digital control module is motivated by ultrasound；Specifically, ultrasonic action module produces target high-pressure pulse excitation ultrasonic transducer and produces ultrasound wave, receive transducer detects echo-signal and is transmitted to echo reception module, after a series of signal process, the digital quantity for including detection information is transferred to into host computer via data communication module and digital control module through data acquisition module, then carries out Correlation method for data processing.In the course of the work, the relative parameters setting of each module is also completed by data communication module and digital control module by host computer simultaneously.
In the XC6S type control systems, the ultrasonic action module includes DC/DC boosted switch power circuits, impulse ejection circuit two parts circuit, its buffer of DC/DC boosted switch power circuit UA is input into control signal, when a points are high level, the grid of field effect transistor Q1, source electrode are all high level VHWhen, Q cut-offs；When a points are low level, the grid potential of Q1 suddenly drops to 15V with a point current potentials, and Q1 is turned on, and high direct voltage is applied directly on ultrasonic transducer, so as to excite transducer to send ultrasound wave；In the impulse ejection circuit, OEA, OEB and OEC enable signal for numeral, INA, INB and INC are digital controlled signal, + 300V and -300V is respectively connected to the continuously adjustable voltage of amplitude that positive and negative high-voltage switch power supply is produced, and bnc interface is used for connecting ultrasonic transducer.
In the XC6S type control systems, the echo reception module includes protection circuit, mode selection circuit, amplifying circuit, four partial circuit of filter circuit；In the impulse ejection circuit, OEA, OEB and OEC enable signal for numeral, INA, INB and INC are digital controlled signal, + 300V and -300V is respectively connected to the continuously adjustable voltage of amplitude that positive and negative high-voltage switch power supply is produced, and bnc interface is used for connecting ultrasonic transducer；The protection circuit builds bridge-type protection circuit from the carborundum CSD01060 type diodes of 4 CREE companies production, for could not the high-voltage pulse that falls of complete attenuation, the stop being made up of a pair of diodes is pulled to amplifying circuit acceptable level；The mode selection circuit selects the electromagnetic relay AXICOM IM03 of Tyco companies as switching switch, mode of operation is non-blocked single-pole double throw, in order to realize Digital Signals, from the relay driver of model MDC 3105 of On Semiconductor companies, which can receive the digital controlled signal of CMOS and TTL, maximum sink current during conducting is 250mA, can meet the demand of IM03；AD8331 linear dB variable gain amplifier of the amplifying circuit using ADI companies（VGA）Low noise prime amplifier can produce the fixed gain of 19dB, single ended input difference output, variable gain amplifier is made up of voltage-controlled variable attenuator and fixed gain amplifier, control voltage is input into from pin GAIN, and second level absolute gain scope is -27dB ~ 21dB, and two kinds of gains of rear gain amplifier offer are selected, that is 3.5dB/15.5dB, can be selected by the HILO pins of chip；The filter circuit is from from Butterworth type passive filter, design four road low-pass filter circuits, it is every to realize low-pass filtering function all the way, two multiplexer ADG704 are designed simultaneously, pin A0, A1 receive the digital controlled signal for coming from FPGA, by the value for changing two pins, carry out the break-make of the filter circuit corresponding to selection target cut-off frequency；In the XC6S type control systems, the data acquisition module completes analogue signal to the transformation of digital signal by A/D change-over circuits, by Differential Input configuration driven A/D conversion chip realizing the optimum performance of chip；In the XC6S type control systems, the data communication module is used for the communication for completing host computer and FPGA, including the setting and the collection of echo-signal digital information of system parameters；In the XC6S type control systems, the digital control module adopts FPGA as the acp chip of digital control module, is the core of whole ultrasound detection control system.
The invention has the beneficial effects as follows：
A kind of XC6S type control systems of NEXT series of products, it is characterized in that, system is constituted by module, transmitting transducer, receive transducer, echo reception module, data acquisition module, data communication module, digital control module is motivated by ultrasound, digital control module is used for the Digital Signal Processing of system, ultrasonic action module is used to produce target high-pressure pulse excitation transmitting transducer generation ultrasound wave, and the ultrasonic signal for receiving is passed to echo reception module and passes to data acquisition module again by receive transducer；Data acquisition module is used to gather useful digital signal, and two-phase connection between data communication module and host computer keeps letter.The invention have multiple functional, high degree of automation, simple structure, it is real-time, with low cost the characteristics of.
Description of the drawings
The present invention is further explained below in conjunction with the drawings and specific embodiments.
Fig. 1 is the overall framework figure of the XC6S type control systems of NEXT series of products；
Fig. 2 is pulse power exciting circuit illustraton of model；
Fig. 3 is impulse ejection circuit diagram；
Fig. 4 is protection circuit implementation figure；
Fig. 5 is mode selection circuit implementation figure；
Fig. 6 is that one-level gain amplifier control voltage occurs circuit；
Fig. 7 is low-pass filter circuit implementation figure；
Fig. 8 is A/D change-over circuit implementation figures.
Specific embodiment
The present invention specific embodiment be：A kind of XC6S type control systems of described NEXT series of products, the ultrasonic action module of system produce pulse signal, encourage the transmitting transducer of residual stress detecting system to produce LCRRipple, propagate after certain distance along tested component, signal is received by receive transducer and is sent to the system echo reception module, now signal checks waveform in being directly inputted to oscillograph, also analog digital conversion can be carried out via data acquisition module, thus obtained digital signal Jing digital control modules and data communication module are sent to host computer.
Fig. 1 is the XC6S type control system overall framework figures of NEXT series of products, the system is constituted by module, transmitting transducer, receive transducer, echo reception module, data acquisition module, data communication module, digital control module is motivated by ultrasound, digital control module is used for the Digital Signal Processing of system, its outfan is unidirectionally connected with the input of ultrasonic action module and echo reception module respectively, and digital control module is bi-directionally connected with data acquisition module, data communication module simultaneously；Ultrasonic action module is unidirectionally connected with transmitting transducer, produces ultrasound wave for producing target high-pressure pulse excitation transmitting transducer；Receive transducer is unidirectionally connected with echo reception module, and echo reception module is unidirectionally connected with data acquisition module, and the ultrasonic signal for receiving is passed to echo reception module and passes to data acquisition module again by receive transducer；Data acquisition module is used to gather useful digital signal, and two-phase connection between data communication module and host computer keeps letter.
Fig. 2 is pulse power exciting circuit illustraton of model, its buffer of DC/DC boosted switch power circuit UA input control signals, and when a points are high level, the grid of field effect transistor Q1, source electrode are all high level VHWhen, Q cut-offs；When a points are low level, the grid potential of Q1 suddenly drops to 15V with a point current potentials, and Q1 is turned on, and high direct voltage is applied directly on ultrasonic transducer, so as to excite transducer to send ultrasound wave；In the impulse ejection circuit, OEA, OEB and OEC enable signal for numeral, INA, INB and INC are digital controlled signal, + 300V and -300V is respectively connected to the continuously adjustable voltage of amplitude that positive and negative high-voltage switch power supply is produced, and bnc interface is used for connecting ultrasonic transducer.
Fig. 3 impulse ejection circuit diagrams, the impulse ejection circuit, wherein OEA, OEB and OEC enable signal for numeral, INA, INB and INC are digital controlled signal, + 300V and -300V is respectively connected to the continuously adjustable voltage of amplitude that positive and negative high-voltage switch power supply is produced, and bnc interface is used for connecting ultrasonic transducer.When INA controls P-channel field-effect transistor (PEFT) pipe QA1 conductings by drive circuit ,+300V high voltage power supplies are applied directly on transducer by diode DA5；When INB controls the conducting of N-channel field effect transistor QA2 by drive circuit, -300V negative high voltage power sources are applied directly on transducer by diode DA6.Alternately control the break-make of QA1 and QA2, you can produce positive and negative square-wave pulse on the transducer, control the Time And Frequency of QA1 and QA2 conductings, you can the different positive and negative square wave of generation pulsewidth and repetition rate.
Fig. 4 is protection circuit implementation figure; the present invention has selected the carborundum CSD01060 type diodes of 4 CREE companies productions; build bridge-type protection circuit for could not the high-voltage pulse that falls of complete attenuation, the stop being made up of a pair of diodes is pulled to amplifying circuit acceptable level.
Fig. 5 is mode selection circuit implementation figure, and the present invention have selected the electromagnetic relay AXICOM IM03 of Tyco companies as switching switch, and mode of operation is non-blocked single-pole double throw.In order to realize Digital Signals, the relay driver of model MDC 3105 of On Semiconductor companies has been selected, which can receive the digital controlled signal of CMOS and TTL, maximum sink current during conducting is 250mA, can meet the demand of IM03.
Fig. 6 is that one-level gain amplifier control voltage occurs circuit, the present invention realizes enlarging function using the integrated special amplifiers of AD8331 of ADI companies, wherein, low noise prime amplifier can produce the fixed gain of 19dB, single ended input difference output, input impedance can be changed by external feedback resistance, realize the impedance matching with input signal, obtain preferable signal to noise ratio；Variable gain amplifier is by voltage-controlled variable attenuator（Gain ranging is -48dB ~ 0dB）And fixed gain amplifier（Gain is+21dB）Two parts are constituted, and control voltage is input into from pin GAIN, and second level absolute gain scope is -27dB ~ 21dB；Gain amplifier provides two kinds of gains and selects afterwards, i.e. 3.5dB/15.5dB can be selected by the HILO pins of chip.Therefore, the overall maximum absolute gains of monolithic AD8331 are 55.5dB, to reach the system requirements of 80dB gains, need to be cascaded using two panels AD8331.
Fig. 7 is low-pass filter circuit implementation figure, in order that this card feeding-discharging has more flexible filtering characteristic, the present invention devises four road low-pass filter circuits, it is every to realize low-pass filtering function all the way, cut-off frequency is respectively 2.5MHz, 7.5MHz, 12.5MHz and 25MHz, in order to realize handoff functionality, devise two multiplexer ADG704 simultaneously, pin A0, A1 receive the digital controlled signal for coming from FPGA, by the value for changing two pins, carry out the break-make of the filter circuit corresponding to selection target cut-off frequency.
Fig. 8 is A/D change-over circuit implementation figures, and the A/D change-over circuit RF_OUT ends of present invention design receive the single-ended analog signal from radio frequency output（Echo-signal i.e. through amplifying, after Filtering Processing）, after the Differential Input configuration circuit built by ADA4930-1, differential signal is separately input to into VIN+ the and VIN- two ends of AD9634, then Jing after A/D conversions, 12 LVDS digital signals is input to into control circuit.
General technical staff of the technical field of the invention also will readily appreciate that here explanation and the specific embodiment for illustrating can further change combination in addition to the foregoing.Although the present invention is to give diagram explanation with regard to its preferred embodiment, person skilled in the art, it is recognized that in the spirit and scope of the present invention for being limited in the attached claims, can also make various changes and variation to the present invention.
Claims (3)
1. XC6S type control systems of a kind of NEXT series of products, it is characterised in that the system is constituted by module, transmitting transducer, receive transducer, echo reception module, data acquisition module, data communication module, digital control module is motivated by ultrasound；Specifically, ultrasonic action module produces target high-pressure pulse excitation ultrasonic transducer and produces ultrasound wave, receive transducer detects echo-signal and is transmitted to echo reception module, after a series of signal process, the digital quantity for including detection information is transferred to into host computer via data communication module and digital control module through data acquisition module, Correlation method for data processing is carried out again, in the course of the work, the relative parameters setting of each module is also completed by data communication module and digital control module by host computer simultaneously；Digital control module outfan is unidirectionally connected with the input of ultrasonic action module and echo reception module respectively, and digital control module is bi-directionally connected with data acquisition module, data communication module simultaneously；Connected by ultrasonic transducer between ultrasonic action module and echo reception module；Echo reception module outfan is unidirectionally connected with the input of data acquisition module, two-phase connection between data communication module and host computer.
2. XC6S type control systems of NEXT series of products as claimed in claim 1, which is levied and is, the ultrasonic action module includes two parts circuit, first DC/DC boosted switch power circuit, for realizing low pressure to the power and energy of high pressure, the driving pulse produced for impulse ejection circuit provides guarantee in amplitude, and which two is impulse ejection circuit, for controlling waveform, pulsewidth and the repetition rate of driving pulse；The echo reception module includes four partial circuits, and the function of wherein protection circuit is, when system is operated in single-shot list and receives pattern, to prevent the high-voltage pulse that impulse ejection circuit is produced from entering into subsequent conditioning circuit, and then the damage that cannot recover is caused to system；Mode selection circuit realizes that single-shot list is received and one one switching for receiving two kinds of mode of operations；Amplifying circuit is used to complete common gain amplification and TGC amplifications, realizes the setting of different amplification by D/A converter；Filter circuit completes free switching between different filter ranges by multiplexer for realizing low-pass filtering and high-pass filtering；The data acquisition module completes analogue signal to the transformation of digital signal by A/D change-over circuits, by Differential Input configuration driven A/D conversion chip realizing the optimum performance of chip；The data communication module is used for the communication for completing host computer and FPGA, including the setting and the collection of echo-signal digital information of system parameters；The digital control module adopts FPGA as the acp chip of digital control module, is the core of whole ultrasound detection control system.
3. DC/DC boosted switch power circuit as claimed in claim 2, it is characterised in that its buffer of DC/DC boosted switch power circuit UA is input into control signal, and when a points are high level, the grid of field effect transistor Q1, source electrode are all high level VHWhen, Q cut-offs；When a points are low level, the grid potential of Q1 suddenly drops to 15V with a point current potentials, and Q1 is turned on, and high direct voltage is applied directly on ultrasonic transducer, so as to excite transducer to send ultrasound wave；In the impulse ejection circuit, OEA, OEB and OEC enable signal for numeral, INA, INB and INC are digital controlled signal, + 300V and -300V is respectively connected to the continuously adjustable voltage of amplitude that positive and negative high-voltage switch power supply is produced, and bnc interface is used for connecting ultrasonic transducer；The protection circuit builds bridge-type protection circuit from the carborundum CSD01060 type diodes of 4 CREE companies production, for could not the high-voltage pulse that falls of complete attenuation, the stop being made up of a pair of diodes is pulled to amplifying circuit acceptable level；The mode selection circuit selects the electromagnetic relay AXICOM IM03 of Tyco companies as switching switch, and mode of operation is non-blocked single-pole double throw, in order to realize Digital Signals, from On
The relay driver of model MDC 3105 of Semiconductor companies, which can receive the digital controlled signal of CMOS and TTL, and maximum sink current during conducting is 250mA, can meet the demand of IM03；AD8331 linear dB variable gain amplifier of the amplifying circuit using ADI companies（VGA）Low noise prime amplifier can produce the fixed gain of 19dB, single ended input difference output, variable gain amplifier is made up of voltage-controlled variable attenuator and fixed gain amplifier, control voltage is input into from pin GAIN, and second level absolute gain scope is -27dB ~ 21dB, and two kinds of gains of rear gain amplifier offer are selected, that is 3.5dB/15.5dB, can be selected by the HILO pins of chip；The filter circuit is from from Butterworth type passive filter, design four road low-pass filter circuits, it is every to realize low-pass filtering function all the way, two multiplexer ADG704 are designed simultaneously, pin A0, A1 receive the digital controlled signal for coming from FPGA, by the value for changing two pins, carry out the break-make of the filter circuit corresponding to selection target cut-off frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634544.8A CN106556641A (en) | 2015-09-30 | 2015-09-30 | A kind of XC6S type control systems of NEXT series of products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634544.8A CN106556641A (en) | 2015-09-30 | 2015-09-30 | A kind of XC6S type control systems of NEXT series of products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106556641A true CN106556641A (en) | 2017-04-05 |
Family
ID=58414813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510634544.8A Pending CN106556641A (en) | 2015-09-30 | 2015-09-30 | A kind of XC6S type control systems of NEXT series of products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106556641A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992819A (en) * | 2017-04-10 | 2017-07-28 | 杭州戬威机电科技有限公司 | Ultrasonic signal excitation, control, reception, conditioning and communication system |
| CN107632071A (en) * | 2017-08-18 | 2018-01-26 | 中车青岛四方机车车辆股份有限公司 | Bolt detection means and bolt detection method |
| CN107733276A (en) * | 2017-09-29 | 2018-02-23 | 南京迪威尔高端制造股份有限公司 | A kind of driving pulse circuit of ultrasonic examination |
| CN109283251A (en) * | 2017-07-19 | 2019-01-29 | 中国科学院声学研究所 | A kind of signal processing circuit of borehole wall imaging ultrasound phased array |
-
2015
- 2015-09-30 CN CN201510634544.8A patent/CN106556641A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992819A (en) * | 2017-04-10 | 2017-07-28 | 杭州戬威机电科技有限公司 | Ultrasonic signal excitation, control, reception, conditioning and communication system |
| CN106992819B (en) * | 2017-04-10 | 2022-12-16 | 杭州戬威科技有限公司 | Ultrasonic signal excitation, control, reception, conditioning and communication system |
| CN109283251A (en) * | 2017-07-19 | 2019-01-29 | 中国科学院声学研究所 | A kind of signal processing circuit of borehole wall imaging ultrasound phased array |
| CN107632071A (en) * | 2017-08-18 | 2018-01-26 | 中车青岛四方机车车辆股份有限公司 | Bolt detection means and bolt detection method |
| CN107733276A (en) * | 2017-09-29 | 2018-02-23 | 南京迪威尔高端制造股份有限公司 | A kind of driving pulse circuit of ultrasonic examination |
| CN107733276B (en) * | 2017-09-29 | 2023-10-10 | 南京迪威尔高端制造股份有限公司 | Excitation pulse circuit for ultrasonic flaw detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105675725A (en) | Ultrasonic pulse transmitting-receiving system based on FPGA control | |
| CN106556641A (en) | A kind of XC6S type control systems of NEXT series of products | |
| CN210090383U (en) | Dual-channel high-frequency pulse excitation receiving board card based on PXI-to-serial port communication | |
| CN105662464B (en) | A kind of digital demodulation method of ultrasonic wave fetal heart monitor and its echo-signal | |
| CN103490754A (en) | Ultrasonic signal with large time bandwidth product and ultrasonic signal pulse compression method and system | |
| CN105588881A (en) | Portable ultrasonic detector for railway power supply net touching pin | |
| CN105559825A (en) | Receiving front-end device of ultrasonic imaging system | |
| CN106525974A (en) | Ultrasonic concrete detection device | |
| CN203037849U (en) | Ultrasonic thickness gauge | |
| CN113325086A (en) | Detection system based on electromagnet type electromagnetic acoustic transducer | |
| CN104614106B (en) | High-speed railway rail stress detection device | |
| CN109283251B (en) | Signal processing circuit of well wall imaging ultrasonic phased array | |
| CN203930003U (en) | A kind of simulating signal excitation system for chip detection | |
| CN102565200A (en) | Arbitrary waveform excitation board card for exciting piezoelectric transducer array to generate ultrasonic guided waves | |
| CN210834776U (en) | Ultrasonic flaw detector | |
| JP2011229630A (en) | Diode bridge type transmission/reception separating circuit, and ultrasonic diagnostic equipment equipped with the same | |
| CN206362743U (en) | A kind of ultrasonic concrete detection means | |
| CN219225089U (en) | Ultrasonic echo signal processing circuit, chip and automobile radar device | |
| CN102480274A (en) | Equiamplitude amplification circuit for ultrasonic tests | |
| CN201388186Y (en) | Equal-amplitude amplifying circuit of high-speed data acquisition system used in ultrasonic testing | |
| CN111257435A (en) | Method and system for eliminating direct current deviation of ultrasonic echo signal | |
| CN113907795B (en) | Transmit-receive system applied to intravascular ultrasound imaging | |
| JPH05212034A (en) | Circuit for generating ultrasonic transmission pulse for ultrasonic tomography device | |
| Zhang et al. | An analysis of excitation pulse adjustable signal of ultrasonic flaw detection | |
| Taccetti et al. | Design of a Novel Pulser for Frequency Selective-based Power and Data Transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170405 |
|
| WD01 | Invention patent application deemed withdrawn after publication |