How to use inexpensive transducers for ultrasonic measurement
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- čas přidán 3. 06. 2024
- Learn more about our ultrasonic sensing portfolio
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* PGA460 [1]
* TUSS4440 [2]
* TUSS4470 [3]
[1] www.ti.com/product/PGA460
[2] www.ti.com/product/TUSS4440
[3] www.ti.com/product/TUSS4470
Read our technical article, "Shrink your solution size with transformer-less ultrasonic ICs"
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Hey folks I left TI 6 years ago but I'm glad to see there's still interest in this part. To answer alot of the questions about biomedical etc in a nutshell this isn't the right part for you. It work really well for sound conduction through liquids (and container walls) but second order reflections (bone cracks etc.) really would require a more complicated sensor array and associated electronics. (ie: medical ultrasound). Its best to think of this device as a highly integrated sonar chip where it will detect the largest object in the echo path.
Texas istruments is the best semiconductor producer. i love you so much.
Thank you very much! I learned lot of new stuff!
Great video. Brief, concise, precise. Thanks.
Thanks!
better than my professor back in college.
Great info and advice!
great video .
Dear Texas directors
Please choise this gentleman for next videos for teller .Because he had describe "All watcher can understand " with simple sentences and samples
(Sorry for English)
Great video
I loved this video ! Thank you !
this guy is awesome!
Which transducer I should choose to detect bone crack.
can i connect this kit with the raspberry pi 3 or arduino ? to mesure water flow?
how different about P-wave transducer and S-wave transducer? where do i buy those transducer? Thanks
Hi Matt,
Thanks for posting this interesting video.
I need to use your company's sensor on a steel made tank to monitor the level of the remaining pressurized liquid butane in a commercial gas bottle container. Would your sensor work if I place it on the bottom surface of the tank under consideration?
Best,
B.
Good stuff mate 👍
cool, you can make an accoustic VNA with 2 of those ICs and measure the impedance of the air
I'm research using the MSP430FR6047 as well. However, when connected from MSP430FR6047 to the ultrasonic sensing Design Center software there is an error "HSPLL detected that the PLL has been unlocked".. Maybe you have experienced the same error? if you ever experience this error. How to solve this error?
I wish to test whether an ultrasonic cat repellant garden accessory actually emits any ultrasonic waves and isn't simply 'snake oil'.
Can any reader please proffer suggestions on the cheapest available method to detect the presence of any ultrasonic waves?
Many thanks.
Thank you to the video creator for such a high quality educational video.
Well it depends on how much you value your time and if you are willing to "cheat" a little.
First of all, you can do that without spending any money and simply looking at the pcb of the device: just google the ics and try to understand what they do(your journey may be concluded right on this step if you spend long enough on it). Another thing you can do is to buy a simple 10$ osciloscope or frequency measurement device, with the same osciloscope you can actually detect the ultrasound waves in the air if you buy an ultrasound receiver, so if you are unwilling to disassemble the device you can try that(but do keep in mind that received signal will be quite weak, and that ultrasound is kinda a finiky thing in itself, so you might find it troubling to do that). You can also try to forego the osciloscope entirely and stick with your plain old sound card which you probably already have(but do keep in mind that they usually have some capacitors on the input and output to "smooth out" high frequncy "noise", aka the thing we are trying to capture and that they are usually not tolerant towards high voltages), or you can with microcontroller or you can buy an arduino ultrasonic module that can be interfeced to your pc with something like a usb to ttl(or if you have a physical com port on it you can go with it).
All in all i would say that it is much easier and cheaper to just find a few stray cats and test it on them directly rather than going through all that hassle.
Hello, I am looking for a way to measure the pressure generated from a low frequency (5hz- 150hz) transducer connected to a surface. Is there a measurement system that you recommend?
That depends on the transducer and how much amplification required. The TDC parts are designed to operate in 1-5Mhz range. Good news for you is that's low frequency so it would be pretty easy to just do those measurements with good oscilloscope. A Rigol off Amazon will also provide a poor man's FFT of the signal. Good luck!
Excellent 👍
very detailed
Which type of oil shall i refill in volumetric transducer chamber?
I think an application note is required for metal housings.
Two brief statements at the beginning don't sound quite right:
“Ultrasound is any sound greater than human hearing in the range of 30kHz to 10MHz”
The ultrasonic frequency range is defined as acoustic frequencies that are above the typical human limit of 20kHz. Additionally I've read that acoustic frequencies can reach well into the gigahertz range, far beyond 10MHz.
“Ultrasound operates by having a piezo-electric transducer create an *electromagnetic* pulse into a medium that’s created from an electrical pulse exciting that transducer.”
+VortexTwin: You are correct I should have said "pressure wave".
i stopped at that **"electromagnetic"** word and started looking for your comment
@@mattminasi4856 Matt are you able to use this device to determine the transmitted power?
This would solve a major problem my company has with a device they manufacture
how are transducers used for ultrasound applications are different from piezoelectric ceramic plate/wafers used in speakers? can you attach them in parallel or series to get either larger diameter or thickness
Not sure I understand the question but with piezos the physical dimensions determine is primary resonance frequency. So in general they are designed to work for a specific range. the diameter (size) has more to do with acoustic transmission power. For instance 2 transducers can have the same resonant frequency but one that 2x the diameter has the capacity to create a larger acoustic wave AND it will detect a smaller acoustic signal for the same excitation voltage.
thanks sir
Is it possible to use this in biomedical field for scanning??
Did you get the answer? I have the same question
Can you use it on fibreglass hull
not really. glass isn't a uniform substrate, it's a composite. your resin "rings" at one speed, your actual glass at another, any kevlar at another, carbon fiber at another, then your core at yet one more (assuming single material core), and any foam layers dampening. now add gelcoat, lol. it's sketchy on a metal hull unless you REALLY engineer the mounting point for accuracy. now, that isnt to say "it's impossible!!", because you COULD get it to work. but, the energy you would have to put behind each pulse would be huge in comparison to a wet transducer like the fish finders use. to measure level in glass tanks, folks usually mount a transducer at the top to measure level by echo off the actual surface through air, avoiding the tank composite. a single material (glass, stainless, plastic) plate can be used in a top mount to avoid corrosive fumes. but tanks dont bounce in the briny deep, especially their "dry" side, lol. so yes, it can be done, but the economy of scale makes it impractical. better perhaps to think more along the lines of a pod to hang off the gunwale, or transom. then you can mount to a uniform material plate, back dampen and waterproof as a single operation, and avoid the headaches, lol
Hi, I am a sound engineering student at Argentina. Lately I've been working on hydrophone designs for cetaceans sounds. I used 160kHz piezoelectric crystals and achieved an acceptable result for Narrow Band Ultrasonic Frequency clicks emitted by dolphines. However, I had a poor response in audible frequencies. If I want to use a hydrophone for audible frequencies, should I use crystals with a resonant frequency bellow, within or above the range of interest??? Why???
that''s a tricky one because "clicks" at like a CHIRP in DSP terminology. In that they have a very frequency components. I'd suggest a wide band microphone vs a piezo. The best way think about a piezo is like a "bell" that rings at a primary harmonic. It will resonate at multiples of that primary but not well.
I can use this method to mesure a stain steel tank filled with wine?
Absolutely! If you check out the app note I did back when I used to work for TI I showed how you can glue transducers on a metal tank and measure liquid volume. The gotcha is tank wall thickness! The thicker the wall the more (acoustic) power required on the transmit pulse. Also I recall wine vats have a cooling jacket (not sure about the bottom) but if they do that will make it hard. Depending on your tank it may be easier to measure level from the top via "the air".
how do I change my ultrasound setup if I am only wanting to identify if there is any ultrasound coming to my receiver/transducer? I just want to verify that you "pest ridder" devices are putting out a reasonable amount of 20k-100k sound
Matt, it's called damping not dampening.