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Under sea water 50 meter distance measurement

ashokb

New Member
Hi All,
I need to be able to measure distance underwater between points with a distance of 50 meter . So I'm thinking something as simple as a sonar should work. One sends a ping the other one receives it and replies back. Can anybody recommend any circuit design solution can use?
OR
any other solution.Please suggest

Thanks,
Ashok
 

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rjenkinsgb

Well-Known Member
Most Helpful Member
You need a pair of underwater-rated ultrasonic transducers.

The cheapest I've found so far are replacements for depth finders, eg.

The rest of the circuitry should generally be similar to an above-water ultrasonic distance finder or remote control etc., just with a different frequency.

There are lots of DIY versions of those online, but many appear to be untested so I can't recommend any specific one to base things on..
 

ashokb

New Member
Hi
Thanks for reply.
We are developing custom board 8 TX Channels and one RX channel.
so suggest me any reference design or any ic part number suitable our application.

Thanks,
Ashok
 

alec_t

Well-Known Member
Most Helpful Member
How accurate does the distance measurement need to be? Precision will require compensation for changes in sound velocity with temperature and salinity.
What frequency will you use?
Is this a school/college project?
 

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