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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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 (...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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. ...
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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 (...
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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 ...
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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 ...
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Sender Circuit for Ultrasound
I'm building this Instructables project: Body-ultrasound Sonography With Arduino, which is using ultrasound to see inside the body. However I'm having some issues with the sender circuit, shown below:
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What sort of iron rod should I use in a magnetostriction oscillator?
I'm trying to make a magnetostriction oscillator at home. Here is the circuit diagram:
1 DC Power Supply
2 Ferromagnetic Core (Iron)
3 NPN Bipolar Junction Transistor (2N2222)
4 Capacitor C
5 Primary ...
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How to build a circuit which allows a piezo transducer to act as both a transmitter and receiver
I am a student and am currently working on a project where I require a piezo transducer to act as both a transmitter and receiver. I am finding it difficult to build a circuit where a pulse can be ...
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Methods to drive an ultrasound transducer
I am purchasing an ultrasound transducer with these specifications
I have been looking to use this transducer to achieve focal pressure of .6Mpa or less and have been searching for the best way to ...
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Low-Intensity Pulsed Ultrasonic (LIPUS) Circuit
I am trying to find a circuit schematic of a device that can create ultrasound wave frequencies of 1-3 MHz and deliver intensities of 2 - 30 mW/cm^2. I am on a Summer research project and need to know ...
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Using a microphone to pickup ultrasonic sounds to trigger events
I'm building a PCB design that will trigger certain events when the onboard microphone picks up specific sounds outside of the range of human hearing.
The desire is to be able trigger events remotely ...
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Ultrasonic sensor ON/OFF switch with transistor
I have an ultrasonic sensor (JSN-SR04T) connected to an Arduino. In order to achieve low power consumption i decided that i want to switch the Ultrasonic sensor off for 8 seconds intervals in between ,...
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Can I use Op-Amps to drive a ultrasonic piezo transducer at 200kHz
I’ll admit I’m not the most knowledgeable guy when it comes to electronic circuits, so I thought I’d ask before breaking anything.
I’m looking to drive a piezo transducer using a 200kHz sine wave. The ...
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How to match Transformer output Impedance for Ultrasonic Cleaning Transducer
I have a transformer outputting the 240VAC 40kHz. The Transducer is 50W, 4100pF, 10-20 Ohm at resonance, ~40kHz resonance)
The Secondary of the transformer is 12mH.
I am trying to match the impedance ...
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Can anyone help with an Ultrasonic Transducer Transformer design. Air gap or no?
I am looking at using a centre tap transformer with a 12mH secondary to drive a 50W 40kHz ultrasonic transducer (4100pF 10-20Ohm resonance impedance) for cleaning applications.
The input voltage is ...
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Why can't the HC-SR04 sensor detect objects that are very close to it?
I am following this worksheet and I am struggling to understand the following piece of code:
...
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CW Doppler probe for fetal doppler and blood flow velocity
I am currently working on a microcontroller based project to measure the blood flow velocity using ultrasound doppler.
I have purchased two Spengler 8 MHz continuous mode probes in order to measure ...
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How does pulser-receiver circuit work
I want to set up an experiment exactly as given in this data sheet for the T/R switch that I recently bought (the MD0101):
Every pulser receiver circuit that I’ve found neglects to address what ...
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Easier ultrasonic distance measurement technique
In ultrasonic distance measurement a train of pulses is sent using typically a 40Khz piezo transducer. After some time the same piezo transducer is used to receive the pulses and distance calculated ...
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What is limiting high frequency ultrasound from being high power
This is mostly just our of curiosity and I feel like I may be missing something basic, but what is limiting ultrasond transducers in the range of 500kHz-MHz from not outputting higher power like the ...
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Custom Ultrasonic Sensor Schematic
I am trying to recreate this project. I have the circuit constructed on a breadboard. I am using an SP232 instead of a MAX232, a TIP42CG PNP instead of a BC557 PNP, and an Arduino Uno instead of an ...
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DIY ultrasonic sensor
I attached the link for the project I am trying to implement. Instead of using an Arduino, I will use either an ESP32 or an STM34.
What is the purpose of the MAX232? Is there something else I can use ...
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