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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4
votes
3answers
501 views

Reduce and clip voltage of a 5Mhz ultrasonic signal from +-50V to 0-3.3 V

I know there are a lot of posts similar to this one but some differences make it worth posting it. I’m working on a project where I have a 5MHz AC signal with the largest amplitude of +-50V. It’s an ...
0
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1answer
771 views

Coherence factor in Delay-And-Sum-Beamformer: Triangle Inequality

I'm writing a delay-and-sum-beamformer in MATLAB that incorporates a so-called and widely used coherence factor CF. Now I'm confused about the math behind that ...
7
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4answers
893 views

Time of flight difference in hardware

I have an ultrasonic emitter, and two ultrasonic receivers. When the emitter emits a pulse, the receivers get the signal at different times. I am only interested in the difference between the two ...
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2answers
1k views

Interfacing ultrasound receivers and emitters with a microprocessor

I have bought ultrasonic receivers and emitters to play with (see datasheet here). I also have an STM32 processor devkit with DAC and ADC pins readily available. How should I connect the ultrasonic ...
3
votes
2answers
752 views

Ultrasonic rangefinder (for beginner)

I'm quite beginner in electronics. So, to begin with, I wanted to make a simple (?) ultrasonic rangefinder, based on microcontroller. So I had a few questions for experienced in electronics: What ...
0
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1answer
116 views

navigating every spot of a room [closed]

I want to build a robot that will navigate over every spot it can in a room. But i thought some kind of a laser to map the room would be best or maybe a ultra sonic sensor. Could anyone guide me in a ...
6
votes
2answers
6k views

Multiple Ultrasonic Rangefinder Question

I've been doing some research on ultrasonic range finders as sensors for robotics. I've seen them being attached to servos and pivoted to effectively "look" in front of the robot and make sure the ...

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