Search found 5 matches

by Dutch-depts
Dec 18th, 2011, 2:53 pm
Forum: Introductions
Topic: Hello from 'sunny' holland
Replies: 3
Views: 1624

Re: Hello from 'sunny' holland

Dank je wel :)

right now i'm traying to get my bachalor degree in rotterdam (evening school, should have finished it 5 years ago when i was still young ;))!

What company do you work for? That job of yours seems like a dream to me!
by Dutch-depts
Dec 18th, 2011, 7:53 am
Forum: Electronics
Topic: Sonar/Depth Sensors
Replies: 9
Views: 8243

Re: Sonar/Depth Sensors

A pressure transmitter is also my pick. Altough when i researched it it seems that salt water reacts differently then sweet. Normally 1bar = 10 meter (love the european measurements) but in salt water it's different (won't be a differance of meters, just centimeters... but still)
by Dutch-depts
Dec 18th, 2011, 7:50 am
Forum: Electronics
Topic: Modifying an ultrasonic sensor to work underwater?
Replies: 16
Views: 25200

Re: Modifying an ultrasonic sensor to work underwater?

A sonar works on the principle of sound waves. Sound travels trough air differantly then through water. So even if the sonar is strong enough you'll still need to calibrate it. And sound also travels different through salt- and fresh (sweet) water. So calibrating it in the pool for use in a river/se...
by Dutch-depts
Dec 18th, 2011, 7:37 am
Forum: Introductions
Topic: Hello from 'sunny' holland
Replies: 3
Views: 1624

Hello from 'sunny' holland

Hi, i'm a rov fanatic elektrical engineer from holland, currently in my disign fase for a 100ft proof rov. Holland just hasn't got realy deep lakes after all ;) I'm also open to questions on the field of elektronics and i'm also currently doing reseach on the different way arduino's can help. I will...
by Dutch-depts
Dec 18th, 2011, 7:29 am
Forum: Control Systems and Tethers
Topic: In water grounding? Ground side control?
Replies: 3
Views: 2192

Re: In water grounding? Ground side control?

unfortunaly that wont be efficient. Water itself has a higher resistance then disired. It would be much more efficient to run an extra wire for ground down to the rov. As for the multible wires to the surface, those where the first controls for rov's. You must be aware that doing so you must take in...