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Questions tagged [ultrasound]

Questions regarding Ultrasonic devices and uses. Ultrasound is higher than the typical human hearing range, with the low end at 20khz. Ultrasonic distance and Proximity meters are common. Be careful around Chiroptera and marine life. Your dog might not like it either.

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What type of amplifier circuit do I need to drive a piezoelectric ultrasound transducer?

I would like to drive the following piezoelectric transducers at 200 V or their maximum voltage (60-1000 V): https://www.manorshi.com/16mm-Dog-Repellent-Ultrasonic-Transducer-25khz-Detect-Sensor-...
Alex's user avatar
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Piezo tr switch no echo signal

I set this circuit to use piezo as transceiver. I can perfectly transfer the transmitter signal (10 burst pulse) but as transmitter still connected onto piezo , any reveived signal is disappears. When ...
ali demir's user avatar
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Impedance matching T/R switch

I do drive a piezo as transceiver. My transmitter provides square burst around 10Vpp which is too big for simply switching through a diode by dc biasing. I found out that bridge rectifier structure ...
ali demir's user avatar
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1 answer
149 views

How to solder wire on Piezo Disc?

I am working on a project that has this piezo sensor. How I can connect wire to it?
Monesh Rathod's user avatar
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2 answers
108 views

Ultrasound Receiver

This is a receiving part of an ultrasound transducer using an NDT ultrasound probe. The overall idea of the circuit is this: the ultrasound received from a patient is very low-voltage so the 3-stage ...
Abhiram MH's user avatar
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2 answers
117 views

How does this ultrasound transmitter work?

Can anyone explain each component and why it is used? Why Q dash used instead of Q from IC 74121? why .1 nad 47 microfarad used? how the 0 to 9V and 0 to -100 V obtained? reference site https://www....
Abhiram MH's user avatar
3 votes
2 answers
563 views

MEMS microphone encode to AAC low performance

I am looking for a solution to encode the data from a MEMS microphone to AAC LC. I have a small microcontroller that is very low power but that lacks the RAM required for encoding so I am looking for ...
www.jensolsson.se's user avatar
2 votes
2 answers
164 views

Ultrasound cIeaning of PCBs with isopropyl alcohol

I have tried to clean the flux remnants on a high-voltage PCB using isopropyl alcohol in ultrasound. The flux remnants were visible around the big SMD components such as transistors or in the creepage-...
Hyp's user avatar
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2 answers
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Sinusoid Amplitude for an Ultrasonic Transducer

I want to design a driver for PKT40A from ThorLabs. The spec sheet indicates "Power (Typical, Instantaneous @ 3 kV)" of 700W, but the "Impedance at Resonant Frequency" of <12 ...
beardeadclown's user avatar
3 votes
1 answer
144 views

Is an RF sampler a good way to protect my network analyzer during high voltage impedance measurements?

When I characterise ultrasound transducers, I normally do it with a network analyzer in a shunt configuration - ie, I connect the transducer across port 1 of the network analyzer. This gives me plots ...
Chris Adams's user avatar
1 vote
1 answer
61 views

Why doesn't the output of a step-up transformer overload low-voltage inputs?

I'm working on a proximity sensor using a piezoelectric ultrasonic transceiver. While looking at driver ICs, I came across the following example in the datasheet for TI's PGA460-Q1: On the righthand ...
danavee's user avatar
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Do piezoelectric or piezoceramic sensors have a fixed resonating frequency?

I am working with a sensor which has piezos in it. I want to know what piezo resonating frequency really means. The piezo I'm using has a resonating frequency of 570kHz as mentioned on the website. ...
Monesh Rathod's user avatar
1 vote
2 answers
127 views

How can I find the resonating frequency of a piezo crystal?

The crystal looks like in the given image I want to find the resonating frequency, whether is it variable or fixed. I find its manufacturer has not given much detail about it. Does a piezo resonate ...
Monesh Rathod's user avatar
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1 answer
60 views

Ultrasound System Design: Navigating Transmission Line Challenges and Impedance Matching

Hello community! I'm currently working on the design of an ultrasound scanning system, and I'm seeking guidance, particularly in the realm of high frequency PCB design and transmission lines. My ...
Sepehr's user avatar
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4 votes
1 answer
223 views

Power Amplifier for Ultrasonic Transducers

I have come across similar questions, but my problem has some specific requirements so I had to ask a new one. I'm working on an ultrasonic speaker array for my PhD thesis. My work is focused on the ...
alevkizilok's user avatar
1 vote
1 answer
39 views

Can I replace this RF amplifier (25A250, Amplifier Research) with a narrow-band amplifier to generate a 200 kHz signal?

I am working in an ultrasound lab that currently uses an RF amplifier (25A250, Amplifier Research) to generate a 200 kHz pulsed signal. The amplifier is receiving a signal from the AFG3022B Tektronix ...
UltrasoundNeuro's user avatar
2 votes
1 answer
147 views

Wake up microcontroller using ultrasonic sensor

I need to design wake up system for microcontroller based on ultrasound. I have no documentation and two sensors, marked as T and R, they look exactly like those in hc-sr04. I have transmitter circuit ...
Konrad's user avatar
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Piezo Transducer RX/RX switch with a charge amplifier

I'm trying to design a circuit that can both transmit a 40kHz square wave and receive a 40kHz sine wave using the same ultrasonic piezo transducer. Switching between them doesn't have to be very fast (...
Michal's user avatar
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1 vote
0 answers
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What type of control system to use for a ultrasonic cleaner transducer

I got an ultrasonic cleaner transducer that needs 60 W at 40 kHz and I am trying to drive it however since we need amplification I was not sure which board to use. My main question is what is the ...
Shivam's user avatar
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3 answers
322 views

Bats ultrasounds detector with LM324

I have some questions about this small project, a device to detect bat ultrasounds and reproduce in a speaker. It's based in a post of the Element14 community, Episode 578. I have adapted it and I'm ...
Gos's user avatar
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1 vote
1 answer
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Which characteristic of an interface allows an ultrasonic sensor to work?

Say I have two liquids in a vat and I want to use ultrasonic to determine what height the interface between the two liquids is. What is the actual liquid property that causes the sound waves to ...
InBedded16's user avatar
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0 answers
251 views

How to drive 1 MHz ultrasonic transducer, transmitter-reciever schematic

I have just bought some ultrasonic sensors from China for a project I'm developing, and the datasheet is not the best, also with my low electrical engineering skills, I am not sure of how to drive the ...
Tomas Tchimino Marcotti's user avatar
2 votes
0 answers
151 views

How to use two or more ultrasonic transducer drivers?

My circuit is below, it has two ultrasonic transducers, transformers and drivers. The transformer is B78416A2232A003, the transducer is MCUSD14A40S09RS-30C, the driver is PGA460-Q1. Digital interface ...
maestro's user avatar
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1 answer
122 views

Transducer for ultrasonic lens cleaning

I recently discovered TI's ULC1001 driver chip for ultrasonic lens cleaning. I'd like to try this in my next project, but I'm not sure what transducer to use. For an application like his, are ...
Rocketmagnet's user avatar
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1 vote
1 answer
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Circuit design help: producing ultrasonic sound waves

I'm working to develop a device that produces ultrasonic sound waves (40 kHz) to scare away animals. We used the circuit schematic shown below in our prototype with this transducer and a 12 V battery ...
popeye3024's user avatar
3 votes
1 answer
120 views

I am having trouble with wide beam of my ultrasonic sensor

I need to measure and detect a gap between two objects. I have an MB7062 (maxbotix) ultrasonic sonar sensor. Due to the wide beam of the sensor (FOV in distance of 2m is about 30cm from the center ...
Mobin Madani's user avatar
1 vote
1 answer
126 views

Is it possible to make a PCB vibrate by pulsing traces?

I want to make a PCB vibrate at ultrasonic frequencies like in the TI's lens cleaning demo video. Is it possible to make a PCB vibrate by pulsing the PCB traces at high frequencies?
devscg's user avatar
  • 153
2 votes
3 answers
204 views

Choose battery for ultrasound transmitter circuit (voltage and current rating)

I would like to build this circuit which is an ultrasonic speaker (from this YouTube video, skip to time 3:53 for the schematic, and also see the designer's website) but I don't know what voltage and ...
Il D's user avatar
  • 21
1 vote
1 answer
109 views

What is the best approach to get the data from a single interface pin ultrasonic sensor?

I am using a Teensy 4.1 to get the data from the TDK B59150X0754P030 sensor. The sensor is working on 8 to 12 VDC. Three pins are there to get data (Vin, Sig, and Gnd). The Sig pin is bidirectional ...
Maharshi Oza's user avatar
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0 answers
38 views

Are the PicoScope 2000 series capable of capturing long signals at high sampling rates?

I need a device to record voltage signals captured with an ultrasonic sensor for at least 1-2 minutes hopefully, 12 bit. The signals are around 100 kHz and of very low voltage, mV range. I ran into ...
RaiGon84's user avatar
-1 votes
1 answer
65 views

Beaglebone black crashing when GPIO toggles for ultrasonic

I have written a simple program to toggle two GPIO pins (for TOGGLE and ECHO) as required for getting range measurements from a HC-SR04 ultrasonic sensor. The ...
Pe Dro's user avatar
  • 153
1 vote
1 answer
1k views

How to get pressure values with a hydrophone?

I’m doing some experimental measurements of ultrasound in a water tank. The goal is to get the pressure distributions in the water and on the surface, where the ultrasonic transducer is attached. All ...
Sixx's user avatar
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0 votes
1 answer
154 views

Connecting ultrasonic transducer to PC (Data Acquisition) [closed]

I'm working on one project and need some guidance. I aim to connect an ultrasonic transducer placed on the pipe to the PC so that I can acquire the data and then process it using Python. I did some ...
Герман Крауклит's user avatar
1 vote
0 answers
100 views

Highish power/frequency sine wave generator

Below I'm showing an excitation signal for an ultrasonic system I'm curious about. It is driving ~ a 10 ohm load (outputting 5 watts). Does anyone have an idea what circuit would generate a waveform ...
Matt's user avatar
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2 votes
1 answer
101 views

Why is PVDF used for ultrasonic receivers and not transmitters?

PVDF is one of the best piezoelectric polymers, and has a good acoustic impedance match with water. It is often used in ultrasonic receivers, but it seems like people don't use it for transmitters. ...
Colin Marcus's user avatar
0 votes
1 answer
148 views

How can I use 16mm 40kHz waterproof ultrasonic transducers to measure distance?

I have these 16mm 40kHz waterproof ultrasonic transducers:Manorshi MSW-A1640H12TR. I am wondering how to measure distance with these transducers. I desoldered the non-waterproof transducers from a US-...
Hari Krishna's user avatar
3 votes
3 answers
148 views

What drives mechanical piezo device ultrasound maximum (sound) power output - electrical power or voltage?

Many definitions of piezo devices say that they convert mechanical energy to electrical (voltage) potential energy. This gives the impression that you want a high voltage to drop onto piezo device ...
EMCInduction's user avatar
0 votes
1 answer
369 views

Ultrasonic phased array speaker spacing for high directivity and efficiency

(Short version of question(s) below.) I want to make an ultrasonic parametric speaker at 40kHz, I want to drive them all at the same constant frequency to keep the electronics cheap. When simulating ...
TeD van Loon's user avatar
2 votes
1 answer
444 views

Ultrasonic digital parametric speaker: What kind of modulation and how does it need to be modulated?

I searched for information on digital 40kHz ultrasonic parametric speakers. While most open sources do mention that you need some modulation, what type of modulation and how it does so is hardly ever ...
TeD van Loon's user avatar
0 votes
2 answers
391 views

Picking up ultrasonic signals on a hydrophone

I bought two Aquarian H2A (3.5mm version, not XLR) hydrophones for receiving faint ultrasonic signals (29 KHz) being generated by an underwater sensor node. I am running into some issues. I tried to ...
Swapnil Saha's user avatar
2 votes
1 answer
132 views

Bandpass filter test results not same as simulated results

I am designing a 40 kHz bandpass filter for a university project involving a portable ultrasonic device. I have designed a 40 kHz filter using the Linear Technology Filter Design Tool with a single ...
LK26's user avatar
  • 31
0 votes
1 answer
196 views

Offsetting an ultrasonic receiver's signal for an amplifier with a floating ground

I have an ultrasonic receiver that I'm putting through an amplifier. I've created a floating ground for the amplifier (because I want to pretend having a negative voltage supply). However, to achieve ...
HFOrangefish's user avatar
1 vote
2 answers
455 views

Why do ultrasonic cleaner transducers usually have two piezoelectric discs (or rings)?

Most of the diagrams for them I've seen show that. Is it for the purpose of amplification, or some other reason?
Tom's user avatar
  • 507
-3 votes
1 answer
821 views

How to hook up discrete ultrasonic sensor pair to Arduino board?

I have a pair of ultrasonic sensors, one of which is a transmitter and the other is a receiver. How do I hook them up to the Arduino board? The board is an Arduino Uno board and the sensors are ...
Aradhya Jain's user avatar
0 votes
1 answer
166 views

Use TC4427EPA to drive an audible buzzer

I am using a TC4427EPA to drive a piezo buzzer, with two bypass capacitors on the supply voltage, as recommended by datasheet. I have used the same setup to drive a 40 kHz ultrasonic speaker (with a ...
Nick Lee's user avatar
  • 141
0 votes
1 answer
226 views

Why is my Multivib piezo atomizer/transducer driver not working?

I'm tying to drive a "Moisturizing Transducer Mist Maker Atomizer Film Plate" using a simple astable multivibrator circuit like this: I can't make it work. No reaction from the atomizer. I ...
ScienceDiscoverer's user avatar
0 votes
1 answer
69 views

Component identification - ultrasonic transducer

We have a Chinese made ultrasonic transducer, 120kHz approximately, 25mm x 25mm dia. It has three wires - red, green and white. The body is PVDF We have determined that the red and white are used to ...
Dirk Bruere's user avatar
0 votes
2 answers
162 views

Can this buffer provide adequate current to drive an ultrasonic transducer?

I am using a BUF634P Buffer (Datasheet) to drive a wideband ultrasonic transducer. The impedance of the transducer varies with frequency and reaches a minimum X = 100 Ω, while its resistance (...
Rhodes's user avatar
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1 vote
0 answers
105 views

How to verify my ultrasound transducer is working?

Hi I am fairly new to electronics equipment and over the past weeks have been setting up an ultrasound device to simulate traumatic brain injuries in samples at the lab I work at. My setup consists of ...
commanderblueh2o's user avatar
0 votes
1 answer
99 views

Estimate transmitted ultrasonic power

I want to use ultrasonic (20 kHz to 100 kHz) transducers to couple ultrasound into pipes for cleaning purposes. You can easily buy those transducers with driving circuits on Aliexpress but I want to ...
x3oo's user avatar
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