1-25 m range sensor

What type of range (distance) measurement sensor (and/or sensor combinations
to minimize the total cost) available with the following specs
i. Range : 1-25 meters
ii.Accuracy : 2-5cm
iii. Max spot size at target : 10cm radius @ 25m
iv. Repetation rate : 10Hz
v. Price : (Yes, I would prefer "low cost" whatever it means)

 

A tape measure

$10 from bunnings

 

If you could handle a much larger spot size, and possibly a lesser
range, ultrasonic rangefinders are the cheapest option for long
distances. If the small spot size is required, then you might be stuck
with pricey laser rangefinders that measure the round-trip travel time.
The Acuity AR4000 measures up to 16.5m and lists at $3500. Similar
products can be found elsewhere.

http://www.acuityresearch.com/products/index.shtml
http://www.astech.de/ENGLISH/ldm41a_e.htm

Later,
Daniel

 

I bought one on sale at the local hardware warehouse for about $50 the other
day.

Ken

 

You can get a 25m tape for that price? Here in the US, for $10 you
would be lucky to get a good 25-foot tape.


Mark Borgerson

 

See, if you went metric you'd get a 300% + improvement on things straight
away.....

Ken

 

That sounds like a laser rangefinder to me. All you need is a laser diode
and photodiode, possibly a reflector on the target coupled with some very
fast pulse generating and measuring. Hope that helps with the homework.

Peter

 

Actually, most laser range finders use a phase measurement, rather
than actual flight time. Leica Geosystems makes some fairly lowcost
laser distance meters, around $800 if I recall correctly.
[http://www.leica-geosystems.com/]

 

Thanks for the link. The Disto Lite is only $330 (at lascolaser.com)
and measures up to 200m with 3mm accuracy. Their higher-end units have
bluetooth for wireless data transfer. If I only had a reason to buy
one; they look neat.

Daniel

 

Thanks for the link. The Disto Lite is only $330 (at lascolaser.com) and

Does Disto Lite has any computer interface such as RS232?

 

The DISTO Lite and Classic do not have the ability to transmit data. A
previous DISTO, called the DISTO Pro 4, did have an RS232 port. It is
no longer being manufactured. It was replaced by the DISTO Plus.

If you have any questions about the DISTO products, feel free to ask
them. You can also visit our website... http://www.lasermeters.com


Best Regards,

Matt Johnson
LaserMeters.com

 

Your Mom (when you do something she does not approve of)!

She comes for free!

 

Gee!

You must be really fast with the tape measure to achieve 10 Hz
repetition rate betheen 1 and 25 m.

Tom