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Building a Hydrophone for the ROV

I am currently working on designing a hydrophone for OpenROV.  My starting point will be the following guide from NOAA.

https://swfsc.noaa.gov/publications/TM/SWFSC/NOAA-TM-NMFS-SWFSC-417.PDF

My initial thought is to use a cheap microphone and encase in a small container filled with mineral oil.  However if anyone in the community has any tips, tricks, or would like to follow along and give advice feel free!

Posted by Marius Antares on August 19, 2014 at 4:31pm

Robots that know when something is wrong

problem

So how do you know when something is going wrong with your robot?

Step 1: You need instrumentation.

We have lots of sensors and instrumentation in OpenROV, but the raw data is just that, data. It needs to be interpreted to create information we can use.

Step 2: Interpet the data

After hundreds of hours of flying OpenROV, we have gotten a sense for when something is wrong with the ROV. But even though we know what to look for in the data, manually scanning a rapidly changing telemetry stream is hard.

This is what the raw data looks like when flying OpenROV.

Step 3: Have the robot do what robots do well, monitor the data.

In a tele-robotic system, it is asking a lot for a pilot to monitor a rapidly changing telemetry stream for data anomalies…

Continue

Posted by Brian A on August 17, 2014 at 2:20pm

Awesome OpenExplorer Expeditions Part 1!

It's been incredible to see all the awesome expeditions that people have been posting to OpenExplorer!

We're so excited to follow along with all of them as plans, people, and resources come together. 

Here's a roundup of some I'm excited about:

The North Wales Mine Exploration: https://openexplorer.com/expedition/northwalesmineexploration

Fish Spawning Research in Quintana Roo: https://openexplorer.com/expedition/fishspawningaggregationsmexico…

Continue

Posted by David Lang on August 17, 2014 at 1:00pm

Pressure Test End-Caps / Main-Tube

last night was after months of design and build the first pressure test. My friend Stefan lent me his home-built pressure chamber.

The First step was 3 bar, then 6 bar and finaly 9 bar.…

Continue

Posted by Bernhard Hilz on August 14, 2014 at 2:31am

 
 
 

OpenROV is a DIY community centered around underwater robots for exploration & adventure. We're a group of amateur and professional ROV builders and operators from over 50 countries who have a passion for exploring the deep.

Join the group if you've got design ideas, adventure ideas, or just want to join the fun! No prior experience necessary.



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Latest Activity

Marius Antares posted a blog post

Building a Hydrophone for the ROV

I am currently working on designing a hydrophone for OpenROV.  My starting point will be the following guide from NOAA.https://swfsc.noaa.gov/publications/TM/SWFSC/NOAA-TM-NMFS-SWFSC-417.PDFMy initial thought is to use a cheap microphone and encase in a small container filled with mineral oil.  However if anyone in the community has any tips, tricks, or would like to follow along and give advice feel free!See More
7 hours ago
Profile IconSirirat Traiviratana, Leonard, hendra chaniago and 2 more joined OPENROV
Monday
Brian A posted a blog post

Robots that know when something is wrong

problemSo how do you know when something is going wrong with your robot?Step 1: You need instrumentation.We have lots of sensors and instrumentation in OpenROV, but the raw data is just that, data. It needs to be interpreted to create information we can use.Step 2: Interpet the dataAfter hundreds of hours of flying OpenROV, we have gotten a sense for when something is wrong with…See More
Sunday
Bernhard Hilz posted a blog post

Pressure Test End-Caps / Main-Tube

last night was after months of design and build the first pressure test. My friend Stefan lent me his home-built pressure chamber.The First step was 3 bar, then 6 bar and finaly 9 bar.Everything went well, there were no leaks.The caps are made ​​of aluminum, the tube is 110/100 mm.…See More
Sunday

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