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ultrasonic probe achieves self-sending and self-receiving

Posted 2017年5月20日 GMT-4 22:17 Acoustics & Vibrations Version 5.2a 6 Replies

Meng Wang
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There is a ultrasonic probe that wants to transmit and receive signals simultaneously. That is, positive piezoelectric and converse piezoelectric are achieved simultaneously. So I want to use the Acoustic-Piezoelectric Interaction,Transient to achieve the goal. How can I set the boundary conditions to make the probe self-sending and self-receiving?
6 Replies Last Post 2017年5月25日 GMT-4 09:31
Edgar J. Kaiser Certified Consultant
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Posted: 8 years ago 2017年5月21日 GMT-4 05:39
Xuebin,

my first idea would be to connect some suitable kind of circuit physics to the piezoelectric electrodes.

Cheers
Edgar

--
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Xuebin, my first idea would be to connect some suitable kind of circuit physics to the piezoelectric electrodes. Cheers Edgar -- Edgar J. Kaiser emPhys Physical Technology http://www.emphys.com
Meng Wang
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Posted: 8 years ago 2017年5月21日 GMT-4 07:50
Hi,
Thank you for your reply. Could you please describe it more detailed？Now, I only achieve the converse piezoelectric by the ultrasonic probe.How can I set the positive piezoelectric simultaneously?
Hi, Thank you for your reply. Could you please describe it more detailed？Now, I only achieve the converse piezoelectric by the ultrasonic probe.How can I set the positive piezoelectric simultaneously?
Edgar J. Kaiser Certified Consultant
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Posted: 8 years ago 2017年5月21日 GMT-4 08:29
I suggest to check examples in the application library and other resources Comsol provides to you. Once you made a start you can address more specific questions.

Cheers
Edgar

--
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
I suggest to check examples in the application library and other resources Comsol provides to you. Once you made a start you can address more specific questions. Cheers Edgar -- Edgar J. Kaiser emPhys Physical Technology http://www.emphys.com
Meng Wang
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Posted: 8 years ago 2017年5月21日 GMT-4 09:07
Thank you,
I have got all the libraries, but I didn't find the positive piezoelectric process, and found no positive and negative piezoelectric simultaneously.Do you have some resources? I'd appreciate it.
Thank you, I have got all the libraries, but I didn't find the positive piezoelectric process, and found no positive and negative piezoelectric simultaneously.Do you have some resources? I'd appreciate it.
Dave Greve
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Posted: 8 years ago 2017年5月22日 GMT-4 11:43
Your question is insufficiently clear to answer. It is possible you are thinking of one of two things:

1. Self-sensing piezoelectric transducers. Here the terminal impedance of the piezo is influenced by the attached structure. You would be interested in frequency domain analysis.

2. Pulse or radar-type interrogation. Here a short pulse excites an ultrasonic wave and the same transducer is used to detect the return pulse. A transmit-receive circuit is used to switch from transmit to receive mode. This mode is used both for flaw detection and medical imaging.

If you mean something else please try to explain it in more detail, maybe then you can be directed to useful examples.

DW Greve
DWGreve Consulting
Your question is insufficiently clear to answer. It is possible you are thinking of one of two things: 1. Self-sensing piezoelectric transducers. Here the terminal impedance of the piezo is influenced by the attached structure. You would be interested in frequency domain analysis. 2. Pulse or radar-type interrogation. Here a short pulse excites an ultrasonic wave and the same transducer is used to detect the return pulse. A transmit-receive circuit is used to switch from transmit to receive mode. This mode is used both for flaw detection and medical imaging. If you mean something else please try to explain it in more detail, maybe then you can be directed to useful examples. DW Greve DWGreve Consulting
Meng Wang
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Posted: 8 years ago 2017年5月25日 GMT-4 09:31
Thank you very much. I have found a similar model. It is useful for me.
Thank you very much. I have found a similar model. It is useful for me.

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