Dynavision B Series User manual

B-Series B800 Sensor
Version 5.1.4.4

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Copyright, © 2006, LMI Technologies, Inc. All rights reserved.
Proprietary
This document, submitted in confidence, contains proprietary information which shall not
be reproduced or transferred to other documents or disclosed to others or used for
manufacturing or any other purpose without prior written permission of LMI Technologies
Inc.
No part of this publication may be copied, photocopied, reproduced, transmitted,
transcribed, or reduced to any electronic medium or machine readable form without prior
written consent of LMI Technologies, Inc.
Trademarks and Restrictions
DynaVision, chroma+scan®, Selcom®, FireSync®, and Sensors That See® are
registered trademarks of LMI Technologies, Inc. Any other company or product names
mentioned herein may be trademarks of their respective owners. Information in this
manual is subject to change.
This product is designated for use solely as a component and as such it does not comply
with the standards relating to laser products specified in U.S. FDA CFR Title 21 Part
1040.
LMI Technologies, Inc.
1673 Cliveden Ave.
Delta, BC V3M 6V5
Canada
Telephone: [phone]
Facsimile: [phone]
www.sensorsthatsee.com

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Table of Contents
1Overview .................................................................................................................4
2Laser Safety............................................................................................................6
2.1 General Information ..........................................................................................6
2.2 Laser Classification...........................................................................................7
2.2.1 Laser Classes ..........................................................................................7
2.2.2 User Precautions & OEM Responsibilities................................................8
2.2.3 Class 3B/lllb OEM Responsibilities...........................................................8
2.3 Requirements on laser systems sold or used in the USA ................................10
2.4 B800 laser safety specification........................................................................10
3Sensor Description ..............................................................................................11
3.1 General ...........................................................................................................11
3.2 Performance Specifications.............................................................................11
3.3 Electrical Power Requirements .......................................................................11
3.4 Dimensions .....................................................................................................12
4Maintenance .........................................................................................................13
4.1 Preventative Maintenance Procedures............................................................13
4.2 Welding and the Scanner Frame.....................................................................13
5Connecting the Hardware....................................................................................14
5.1 Connection Overview ......................................................................................14
5.2 Mounting .........................................................................................................15
5.2.1 Sensor Positioning .................................................................................15
5.2.1.1 Relative to the Target...................................................................................... 15
5.2.1.2 Relative to other sensors ................................................................................ 16
5.2.2 Chain Spacing........................................................................................17
5.3 Cabling/Power.................................................................................................19
5.3.1 Connector and Cable Part Numbers.......................................................20
6OEM Design..........................................................................................................21
6.1 Design Requirements......................................................................................21
6.1.1 System Calibration .................................................................................21
6.1.1.1 Determine Laser Alignment Offset/Delay........................................................ 21
6.1.1.2 Determine Range Offset ................................................................................. 21
6.2 Design Recommendations ..............................................................................22
6.2.1 Sensor Mounting....................................................................................22
6.2.2 Baffle Plates...........................................................................................22
6.2.3 Photocells ..............................................................................................23
6.2.4 Scanner Frame ......................................................................................23
7Getting Started .....................................................................................................24
7.1 Powering up....................................................................................................24
7.2 Connecting......................................................................................................25
7.3 Sensor Diagnostics .........................................................................................26
7.4 Application development .................................................................................26
7.5 Ranges ...........................................................................................................27
8Warranty ...............................................................................................................28
8.1 Warranty policies.............................................................................................28
8.2 Return policy...................................................................................................28
9Getting Help..........................................................................................................29

Section 1
1 Overview
The DynaVisionB800 sensor by LMI Technologies Inc. is designed for use in a lumber
profile scanner to supply a 3 dimensional profile for lumber recovery optimization. B800
based scanning systems are primarily designed to provide true shape, 3D
measurements of lumber to enable computerized optimization of lumber processing
centres such as edgers, trimmers, and sorters.
Raw boards are fed through the scanner using cross-transfer mechanism such as chains
equipped with lugs. Each set of lugs "pushes" a raw board (flitch) through the scanner.
Travel distance is measured using an opto-mechanical encoder attached to the motor.
While the flitch is traveling under the scanner, each encoder pulse triggers the sensor to
take range measurements at intervals of 3.00" along the length of the target. These
measurements are retrieved by a NetPowerHub interface module, stored in it’s internal
data buffers and made available to the scanner computer once the target board
completely passes through.

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Access to the sensor data is based on standard TCP/IP and UDP Ethernet network
protocol allowing the DynaVisionB800 to be interfaced to many hardware and OS
platforms.
Each B800 sensor provides data for a 2 foot (610 mm) section (the length of each B800
sensor) of the material to be scanned. The sensors may be mounted above and below
the target (Top/Bottom scanning) or above the target only (Top only scanning).
Top/Bottom scanning allows true thickness measurements at each laser beam. Top
only scanning provides thickness profiles at each laser beam relative to an arbitrary fixed
reference point.
The sensors are designed to be used in conjunction with the NetPowerHub (NPH) and
the MBstation which collects measurements from all installed heads and stores them for
use by the client’s computer. A fully populated NetPowerHub permits top/bottom
scanner designs of up to 24 feet (6.1 m) and 48 feet (12.2 m) for top only systems.
The B800 sensor generates measurement samples at 2 kHz. Each pulse generated by
an encoder connected to the NetPowerHub/MBstation, causes the current range
readings for all heads on the frame (scan line) to be collected.
B800 sensors are kept in synch with one another via a synchronization signal that is
transmitted from the NetPowerHub/MBstation to each sensor. This ensures that the
range data sampled at the same point in time across the board.
The following components are available from LMI Technologies Inc.:
B800 sensors laser-based distance sensors.
NetPowerHub/MBstation Distributes individually fused power and serial
communications to the B800 heads.
B-series Software CD CD-ROM containing software libraries, system
installation, diagnostic and demonstration
programs, and software documentation.
The following may be ordered directly from DNA Cables of Burnaby, BC, Canada
(ph: 604-439-1099) or LMI :
Integrated Power Cable Connectorized cable for power and serial
communications.

Section 2
2 Laser Safety
2.1 General Information
The laser light sources used in LMI Sensors are semiconductor lasers emitting visible
light.
LMI Laser Sensors have a 2/ll, 3R/llla or 3B/lllb classification depending on model.
Class 2/ll and 3R/llla sensors are referred to as “products” indicating that they fully
comply with the standards relating to laser products specified in IEC 60825-1 and U.S.
FDA CFR Title 21 Part 1040 except for deviations pursuant to Laser Notice No. 50,
dated July 26, 2001.
Class 3B/lllb sensors are sold only to qualified OEM’s as “components” for incorporation
into their own equipment. The sensors do not incorporate safety items which the OEM is
required to provide in their own equipment (e.g. remote interlocks, key control). As such
these sensors do not fully comply with the standards relating to laser products specified
in IEC 60825-1 and FDA CFR Title 21 Part 1040.
Caution!
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.

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1. International Standard IEC 60825-1 (2001-08) Consolidated edition, Safety of
laser products – Part 1: Equipment classification, requirements and user’s guide
2. Technical Report TR 60825-10, safety of laser products – Part 10. Application
guidelines and explanatory notes to IEC 60825-1
3. Laser Notice No. 50, FDA and CDRH http://www.fda.gov/cdrh/rad-health.html
2.2 Laser Classification
2.2.1 Laser Classes
Class 2/ll laser products:
Class 2/ll laser products would not cause
permanent damage to the eye under
reasonably foreseeable conditions of
operation, provided that any exposure can
be terminated by the blink reflex (assumed
to take 0.25 sec). Because classification
assumes the blink reflex, the wavelength of
light must be in the visible range (400 nm to
700 nm). The Maximum Permissible
Exposure (MPE) for visible radiation for 0.25
second is 25 Watt per square meter, which
is equivalent to 1 mW entering an aperture
of 7 mm diameter (the assumed size of the
pupil).
Class 3R/llla laser products:
Class 3R/llla laser products emit radiation
where direct intrabeam viewing is potentially
hazardous, but the risk is lower than for
3B/lllb lasers. Fewer manufacturing
requirements and control measures for
users apply than for 3B/lllb lasers.
Class 3B/lllb laser components:
Class 3B/lllb components are unsafe for eye
exposure. Usually only ocular protection
would be required. Diffuse reflections are
safe if viewed for less than 10 seconds.
Labels reprinted here are
examples relevant to the laser
classes. For detailed
specifications observe the label
on your laser sensor

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2.2.2 User Precautions & OEM Responsibilities
The specific user precautions as specified in IEC 60825-1 and FDA CFR Title 21 Part
1040 are:
Requirements Class 2/ll Class 3R/3a Class 3B/3b
Laser safety officer Not required Not required Required
Remote interlock Not required Not required Required**
Key control Not required Not required
Required**
Cannot remove key
when in use
Beam attenuator Not required Not required Required**
Emission indicator Not required Not required Required**
Warning signs Not required Not required Required**
Beam path Not required Terminate beam at
useful length
Terminate beam at
useful length
Specular reflection Not required
Prevent
unintentional
reflections
Prevent unintentional
reflections
Power-On delays Not required Not required Required**
Eye protection Not required Not required Required under
special conditions
Training Not required
Required for
operator and
maintenance
personnel
Required for operator
and maintenance
personnel
LMI Class 3B/lllb laser components do not incorporate the safety items indicated by an
asterisk ** in the table above. These items must be added and completed by the OEM
in the system design.
2.2.3 Class 3B/lllb OEM Responsibilities
LMI Technologies has filed reports with the FDA to assist the OEM in achieving
certification of their laser products. The OEM can reference these reports by an
accession number that will be provided upon request.

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A detailed description of the safety items that must be added to the OEM design is listed
below:
Remote Interlock
A remote interlock connection must be present in Class IIIB laser systems. This permits
remote switches to be attached in serial with the keylock switch on the controls. The
deactivation of any remote switches must prevent power from being supplied to any
lasers.
Key Control
A key operated master control to the lasers that prevents any power from being supplied
to the lasers while in the OFF position. The key can be removable in the OFF position
but the switch must not allow the key to be removed from the lock while in the ON
position.
Beam Attenuators
A permanently attached method of preventing human access to the laser radiation other
than switches, power connectors or key control must be employed. On some LMI laser
sensors, the beam attenuator is supplied with the sensor as an integrated mechanical
shutter.
Emission Indicator
It is required that the controls that operate the sensors incorporate a visible or audible
indicator when power is applied and the lasers are operating. If distance (>2 m between
sensor and controls) or mounting of sensors intervenes with observation of these
indicators, a second power-on indicator should be mounted at some readily observable
position. When mounting the warning indicators, it is important not to mount them in a
location that would require human exposure to the laser emissions.
Power-On Delays
A delay circuit is required that illuminates warning indicators for a short period of time
prior to supplying power to the lasers.

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Warning Signs
Laser warning signs must be located in the vicinity of the sensor such that they will be
readily observed. Examples of laser warning signs are:
2.3 Requirements on laser systems sold or used in the USA
The OEM’s laser system which incorporates laser components or laser products
manufactured by LMI Technologies requires certification by the FDA.
It is the responsibility of the OEM to achieve and maintain this certification.
OEM’s are recommended to obtain the information booklet Regulations for the
Administration and Enforcement of the Radiation Control for Health and Safety Act of
1968: HHS Publication FDA 88-8035.
This publication, containing the full details of laser safety requirements, can be obtained
directly from the FDA, or downloaded from their website at http://www.fda.gov/cdrh.
2.4 B800 laser safety specification
Laser Classification: 3B/IIIb laser component
Peak Power: 100mW
Emitted Wavelength: 660nm
FDA Example IEC Example