solid inventory measurement Industrialised 3D surface scanning - - PowerPoint PPT Presentation

ALLISON Eng inventory measurement Advances in bulk solid inventory measurement

Industrialised 3D surface scanning

ALLISON Eng inventory measurement

• 1. Allison Background
• 6. Principal of Operation
• 3. The Problem
• 4. Current Measurement Methods
• 5. New Technology
• 2. The Market
• 7. System Configurations
• 8. References

ALLISON Eng inventory measurement Allison Engineering (Inc. 1979)

Specialist solutions for process industries;

Level / distance measurement Gas mass flow measurement Biogas Analysers Pipe safety shields (heat / fire / spray)

ALLISON Eng inventory measurement The market

Large scale bulk-solid storage Bulk sheds / stockpiles Bays Large silos

ALLISON Eng inventory measurement The problem

How much is in there? How do we manage filling / reclaiming? How do we avoid overfill? How do we avoid running too low? Stock discrepancies!

ALLISON Eng inventory measurement Current methods

Borrow technology from other applications Visual check for guestimation Rely on weigh in / weigh out calcs

ALLISON Eng inventory measurement Current methods

Borrow technology from other applications

All level measurement technologies were designed for LIQUID applications ‘Level’ assumes flat surface

ALLISON Eng inventory measurement Current methods

Borrow technology from other applications

What is the level?

WRONG QUESTION

ALLISON Eng inventory measurement Current methods

Visual check for guestimation

Looks about 1/3rd full

ALLISON Eng inventory measurement Current methods

Rely on weigh in / weigh out calcs

Necessary but does not take account of:- Unexpected filling / emptying Operational errors (wrong bay/silo/chute leakage)

ALLISON Eng inventory measurement Current methods

Guess work in absence of anything better:-

Stock discrepancies …………………. High safety-stock …………………….. Product build-up …………………….. Filling / emptying issues…………… Delivery scheduling issues ……....

COSTS MONEY

ALLISON Eng inventory measurement New technology

Designed specifically for bulk-solid market

Born out of South African mining industry, incredibly rugged Measures entire product profile for highly accurate, total inventory & 3D image

ALLISON Eng inventory measurement New technology

Designed specifically for bulk-solid market

ALLISON Eng inventory measurement New technology

Designed specifically for bulk-solid market

ALLISON Eng inventory measurement Principal of operation

Time-of-flight laser

We measure the time it takes for light to travel to the target and back This single distance transmitter (LM80) used on many hundreds of applications over last 15 years

ALLISON Eng inventory measurement Principal of operation

Time-of-flight laser

Virtually no beam divergence No false echoes Long measurement range DIFFERENT TO ULTASONICS Simple set-up

ALLISON Eng inventory measurement

Same LM80 optics, moves on 2 axis to give up to 180° scan 80m range per scanner. Can be connected in network for larger areas Takes up 3000+ individual distance measurements to build point cloud Empty space measured to provide total inventory volumetric value & 3D image

Model VM3D Scanner

ALLISON Eng inventory measurement

Same LM80 optics, moves on 2 axis to give up to 180° scan 80m range per scanner. Can be connected in network for larger areas Takes up 3000+ individual distance measurements to build point cloud Empty space measured to provide total inventory volumetric value & 3D image

Model VM3D Scanner

Volume to ‘mass’ relies on density / bulk-density

ALLISON Eng inventory measurement System configuration No.1

Model VM3D, Periodic inventory

Scanner Controller

3G signal

Data centre, 24hr Data & 3D image via secure server

• r by email

ALLISON Eng inventory measurement System configuration No.1

Model VM3D, Periodic inventory

• Independent of client control system, simple
• Data available to finance, ops, C&I depts
• ‘Snap shot’ image, periodic;

Daily, weekly, monthly, on-demand

ALLISON Eng inventory measurement System configuration No.2

Model VM3D, Process Control – reduced scan

Scanner

Modbus

Client control system No data-centre, quick refresh rate for process control

ALLISON Eng inventory measurement System configuration No.2

Model VM3D, Process Control – reduced scan

VM3D can scan 3678 x data points in concentric circles Custom set scan-pattern Silo; plan view Silo; side view

ALLISON Eng inventory measurement System configuration No.2

Model VM3D, Process Control – reduced scan

Labview controls scanner,

• utputs virtual ‘columns’

as modbus registers

ALLISON Eng inventory measurement References

Model VM3D,

Omnia, SA (fertiliser bays) Tongaat, SA (starch) Gold Fields, SA (gold mine) Growhow, UK (fertiliser bays) RWE Aberthaw (coal day bins) E.ON power station (gypsum shed) All applications are considered very dusty but not all dusts are the same. Only fine cement & flour have proved difficult for us – but we can determine suitability with LM80 test

ALLISON Eng inventory measurement References

Model VM3D,

EON, UK (Gypsum shed)

Purchase for 2-point system, weekly inventory

ALLISON Eng inventory measurement References

Model VM3D,

EON, UK (Gypsum shed)

Purchase for 2-point system, weekly inventory

ALLISON Eng inventory measurement References

Model VM3D,

Growhow, UK (fertiliser bays)

3 month trial, daily scan of 3500 bulk bay

ALLISON Eng inventory measurement References

Model VM3D,

RWE Aberthaw, UK (coal day-bins)

3 month trial, 10-point reduced scan pattern, continuous

Front Side

Worked exceptionally well in this incredibly dusty application – even during the filling process

ALLISON Eng inventory measurement

Allison Engineering Capricorn Centre Cranes Farm Road Basildon Essex SS14 3JA Tel: +44 (0) 1268 526161 Fax: +44 (0) 1268 533144 www.allison.co.uk