Small Void Scanning

Discuss Cavity Scanning here.
Post Reply
User avatar
terradat
V.I.P Member
V.I.P Member
Posts: 128
Joined: Thu Jul 31, 2008 7:52 am
15
Full Name: Nick Russill
Company Details: TerraDat Geomatics UK Ltd.
Company Position Title: Director
Skype Name: nick.russill
Linkedin Profile: Yes
Location: Cardiff, UK
Contact:

Small Void Scanning

Post by terradat »

Hi,

I wonder if anyone can recommend a piece of scanning hardware that can be inserted through a narrow diameter hole and used to produce a point cloud of a void?

The entrance hole is 12.7cm wide and 60cm long. A 360 degree scan would then need to image the void at the bottom of the hole out to around 1m.

If such a tool exists, what is the best accuracy that could be achieved?

Thanks for any advice,

Nick
User avatar
stevenramsey
Global Moderator
Global Moderator
Posts: 1937
Joined: Sun Aug 12, 2007 9:22 pm
16
Full Name: Steven Ramsey
Company Details: 4DMax
Company Position Title: Technical Specialist Scanning
Country: UK
Skype Name: steven.ramsey
Linkedin Profile: Yes
Location: London
Has thanked: 30 times
Been thanked: 72 times
Contact:

Re: Small Void Scanning

Post by stevenramsey »

http://www.mdl.co.uk/

You would have to check with them the accuracies that there systems are caperble of.
Steven Ramsey

Home [email protected]
Work [email protected]
Mobile +44 7766 310 915
User avatar
terradat
V.I.P Member
V.I.P Member
Posts: 128
Joined: Thu Jul 31, 2008 7:52 am
15
Full Name: Nick Russill
Company Details: TerraDat Geomatics UK Ltd.
Company Position Title: Director
Skype Name: nick.russill
Linkedin Profile: Yes
Location: Cardiff, UK
Contact:

Re: Small Void Scanning

Post by terradat »

Thanks Steve. A useful range of kit they have. It would seem their C-ALS ( Cavity Scanner ) would be the most appropriate product, however this has ±5cm accuracy, and our application requires 0.5-1mm.
User avatar
stevenramsey
Global Moderator
Global Moderator
Posts: 1937
Joined: Sun Aug 12, 2007 9:22 pm
16
Full Name: Steven Ramsey
Company Details: 4DMax
Company Position Title: Technical Specialist Scanning
Country: UK
Skype Name: steven.ramsey
Linkedin Profile: Yes
Location: London
Has thanked: 30 times
Been thanked: 72 times
Contact:

Re: Small Void Scanning

Post by stevenramsey »

I doubt you will find something of that accuracy. Once in the void what sort of range do you need.
Steven Ramsey

Home [email protected]
Work [email protected]
Mobile +44 7766 310 915
User avatar
terradat
V.I.P Member
V.I.P Member
Posts: 128
Joined: Thu Jul 31, 2008 7:52 am
15
Full Name: Nick Russill
Company Details: TerraDat Geomatics UK Ltd.
Company Position Title: Director
Skype Name: nick.russill
Linkedin Profile: Yes
Location: Cardiff, UK
Contact:

Re: Small Void Scanning

Post by terradat »

Yes, I agree it's a tall order but worth asking about. Once in the void, we need a range of around 1m
User avatar
Oliver Buerkler
Global Moderator
Global Moderator
Posts: 1446
Joined: Mon Oct 06, 2008 9:44 am
15
Full Name: Oliver Buerkler
Company Details: FARO Europe GmbH
Company Position Title: Director of Laser Scanning
Country: Germany
Skype Name: oliver_buerkler
Linkedin Profile: Yes
Has thanked: 38 times
Been thanked: 12 times
Contact:

Re: Small Void Scanning

Post by Oliver Buerkler »

Hi Nick.

Our scanners would easily fith through the 60cm (we need only 41cm or even 28cm in the other direction) but the width would need to be 16cm at least.

Best regards,
Oliver Bürkler
Oliver Bürkler
Director of Laser Scanning
FARO Europe GmbH
[email protected]
[email protected]

Twitter: FARO_LS_PM
User avatar
Matt Young
Honorary Member
Honorary Member
Posts: 3929
Joined: Fri Nov 30, 2007 3:03 pm
16
Full Name: Matt Young
Company Details: Baker Hicks
Company Position Title: CAD-BIM Lead
Country: UK
Linkedin Profile: No
Has thanked: 45 times
Been thanked: 40 times

Re: Small Void Scanning

Post by Matt Young »

Oliver,

Are you talking about an arm scanner, otherwise accuracy would still be an issue.

Matt
If you don't see that there is nothing, then you are kidding yourself.
User avatar
Oliver Buerkler
Global Moderator
Global Moderator
Posts: 1446
Joined: Mon Oct 06, 2008 9:44 am
15
Full Name: Oliver Buerkler
Company Details: FARO Europe GmbH
Company Position Title: Director of Laser Scanning
Country: Germany
Skype Name: oliver_buerkler
Linkedin Profile: Yes
Has thanked: 38 times
Been thanked: 12 times
Contact:

Re: Small Void Scanning

Post by Oliver Buerkler »

I was talking about our Photon scanners. Accuracy would be 2mm then.

A Scan Arm would be an interesting approach as well. The size should be no issue anymore than. But it may have 2 new challenges:
- you will need to bring the scan head as close as 60mm to the surfaces to be scanned
- you will need a way to move the scan head around in the void

As you may know, the Scan Arm could be compared to a "laser brush" which "paints" the surface. So you need somehow a way to move the scan head over the objects.

Best regards,
Oliver Bürkler
Oliver Bürkler
Director of Laser Scanning
FARO Europe GmbH
[email protected]
[email protected]

Twitter: FARO_LS_PM
User avatar
Matt Young
Honorary Member
Honorary Member
Posts: 3929
Joined: Fri Nov 30, 2007 3:03 pm
16
Full Name: Matt Young
Company Details: Baker Hicks
Company Position Title: CAD-BIM Lead
Country: UK
Linkedin Profile: No
Has thanked: 45 times
Been thanked: 40 times

Re: Small Void Scanning

Post by Matt Young »

I dont think 2mm is possible but many will disagree im sure :D
If you don't see that there is nothing, then you are kidding yourself.
User avatar
Oliver Buerkler
Global Moderator
Global Moderator
Posts: 1446
Joined: Mon Oct 06, 2008 9:44 am
15
Full Name: Oliver Buerkler
Company Details: FARO Europe GmbH
Company Position Title: Director of Laser Scanning
Country: Germany
Skype Name: oliver_buerkler
Linkedin Profile: Yes
Has thanked: 38 times
Been thanked: 12 times
Contact:

Re: Small Void Scanning

Post by Oliver Buerkler »

Hi Matt,

just curious why you think that 2mm measurement accuracy are not possible.

Best regards,
Oliver Bürkler
Oliver Bürkler
Director of Laser Scanning
FARO Europe GmbH
[email protected]
[email protected]

Twitter: FARO_LS_PM
Post Reply

Return to “Cavity Scanners”