Pages: [1]   Go Down
Author Topic: Laser Height Difference Sensor  (Read 659 times)
0 Members and 1 Guest are viewing this topic.
İstanbul
Offline Offline
Newbie
*
Karma: 0
Posts: 7
M.Sc Engineer from Istanbul
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Dear All, I searched all the forum but couldn't find any "laser" sensor for calculating the difference of height from a reference point.

Is there any "laser" receiver component which shows the +,- difference values from a predefined reference point?
Logged

Dubuque, Iowa, USA
Offline Offline
Edison Member
*
Karma: 29
Posts: 2244
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Are you describing a laser receiver as would be used by a land surveyor? Laser targets of that type are only ~5cm high and don't have much granularity; I'm assuming that they have a row of individual sensors.
Logged

İstanbul
Offline Offline
Newbie
*
Karma: 0
Posts: 7
M.Sc Engineer from Istanbul
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Thanks for the reply Chagrin. Well, yes. I want to know that if there is a laser receiver component for land surveying, for measuring the level differences and so on..

5 cm is really small, it's not enough..

Logged

Global Moderator
Netherlands
Online Online
Shannon Member
*****
Karma: 168
Posts: 12431
In theory there is no difference between theory and practice, however in practice there are many...
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
5 cm is really small, it's not enough..
what resolution do you need?

You could use one sensor and move it up/down with very little steps and search for the maximum signal.

you get values e.g.  like

1 1 1 1 2 2 2 33 55 55 55 40 5 2 1 1 1 

Then you can calculate that the max signal is probably a bit right of the middle 55.
Logged

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)

Pages: [1]   Go Up
Jump to: