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Dynavision B Series Скачать руководство пользователя страница 5

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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.

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Содержание B Series

Страница 1: ...B Series B800 Sensor Version 5 1 4 4 ...

Страница 2: ...ne 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...

Страница 3: ... 5 Connecting 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 6 OEM 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 Ran...

Страница 4: ...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 ta...

Страница 5: ...r 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 NetPo...

Страница 6: ...t 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 t...

Страница 7: ...k 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 haz...

Страница 8: ...t 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 n...

Страница 9: ... 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 op...

Страница 10: ...ponsibility 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 web...

Страница 11: ...asers at the actual scan rate of the CCD without overlapping spots The B800 sensor uses only solid state components including solid state lasers Reliability is improved by avoiding the use of beam splitters spinning mirrors or other mechanical devices All components are mounted in a solid aluminum CNC machined package which can be installed directly in the sawmill environment 3 2 Performance Speci...

Страница 12: ...12 3 4 Dimensions 1 ...

Страница 13: ... sensors Using clean air blow off the top and bottom head baffle plates and sensors Do not use any air which may contain water or oil as it may coat the glass lenses on the sensors resulting in scanning errors Clean the glass windows on each sensor using a soft lint free cloth and isopropyl alcohol Do not pressure wash the sensors as this can cause severe damage 4 2 Welding and the Scanner Frame D...

Страница 14: ...Section 5 5 Connecting The Hardware 5 1 Connection Overview Figure 5 1 Bx00 to MB Station Connection MBstation NPH 66 Bx00 Sensors Encoder Input DC Power In Ethernet Cable Photocell Input Bx Cable ...

Страница 15: ...face of the sensor Measurement Offset and extends 14 Measurement Range Depending on the possible sizes of the target material and whether or not the system will be a Top only or Top Bottom scanner this will influence the distance to place the sensors above and or below the material transfer Keep in mind that the closer the sensors are placed to the transfer the greater the opportunity for objects ...

Страница 16: ...unted sensors each Top Bottom pair of sensors should have the same offset distance The diagram below illustrates the relative positioning of sensors in a system Figure 5 3 B800 sensor offset staggering configuration In Top Bottom scanner systems each Top Bottom pair of sensors should be positioned so that the lasers are pointed directly into the aperture windows of the opposing sensor The mounting...

Страница 17: ...rough it s field of view This is an example of improper chain spacing In this case lasers 3 and 5 are not visible to Camera 1 and laser 4 is hitting the chain No range data will be reported for lasers 3 and 5 in this example because they are not seen by both cameras Important Both cameras must have a clear view of each laser in order to provide range information The highly reflective surface and c...

Страница 18: ...of proper chain spacing The chains are run between sensors giving both cameras on each sensor a clear view of every laser throughout the sensor s measurement range In addition no lasers are hitting the chain or other metal objects Figure 5 5 Proper Chain Spacing ...

Страница 19: ...return VDC RxTx Asynchronous 19 4 Kbaud serial bi directional pair RS 485 SerClk High speed Serial Clock pair SerDat High Speed Serial Data pair Each of the four twisted pairs in the CAT5 cable are connected to one of the RS 485 differential or power ground pairs The B800 sensor has been specially designed to work with high source resistance power supplies thus allowing more inexpensive power cabl...

Страница 20: ...Part Numbers The manufacturer and part number for the cable end of the power cable is Amphenol C091 31H008 101 2 The cable is 4 pair shielded CAT5 Ethernet cable can be either solid core or stranded and has a variety of manufacture ...

Страница 21: ...es that the readings are taken from the same location is to run a straight 2 x4 profile bar through the scanner and then examine the scan buffers During the calibration process an offset value of 0 is used when reading the scan buffers The number of blank out of range entries in each of the buffers corresponds to the offset value for that buffer It is crucial that the profile bar used for calibrat...

Страница 22: ...sign to match their application and existing equipment Some points to consider are 6 2 1 Sensor Mounting When designing the scanner frame it is preferable that the design mounts the sensors on the downstream side of the frame so that any debris travels away from the sensors Sensors are generally mounted with the first laser line 1 to 3 inside the zero lumber line to ensure that the first laser spo...

Страница 23: ...e sensor data The sensors are intended for range measurement and wane detection Photocells can give better width accuracy especially for square material 6 2 4 Scanner Frame To protect the cabling from damage run the cabling for the sensors inside the frame support beam to one end of the frame where power supplies and conduits to computer room are located Having a design which incorporates a positi...

Страница 24: ...the IP address using IPConfig Update Firmware using kUpdate How to use the Software tools NbTest and BxLoad 7 1 Powering Up 1 Verify that the power supply is switched off and connect it to the NPH 2 Connect the PC to the NPH via Ethernet port If connecting directly a crossover cable is required 3 Connect each sensor to the NPH 4 Switch on the power supply 5 Verify that all the sensors LED are lit ...

Страница 25: ...BStation ships with the address 192 168 0 151 Please refer to the MBStation user manual for instructions on modifying the IP address or the mask 3 Start NBTest application and select Scanner Parameters tab 4 Fill the NPH 66 IP Address box with the correct IP address 5 Select System tab and press Connect Verify that the Heads tab at the top of the application window shows the connected heads in gre...

Страница 26: ...ntry matches the serial number of the selected sensor and the Ranges column reports distance from the face of the sensor to the target Figure 7 2 NbTest Diagnostic Tab For further information on the use of NBTest application please refer to the NPH 66 OEM manual 7 4 Application Development Please refer to the NPH OEM manual for the information on the supplied libraries and tools The B Series OEM C...

Страница 27: ...27 7 5 Ranges Ranges Tab windows displays both numerical and a bar graph representation of current range readings within the operational range Figure 7 3 NbTest Ranges Tab ...

Страница 28: ...y Before returning the product for repair warranty or non warranty a return material authorization RMA number must be obtained from LMI Please call LMI to obtain this RMA number Carefully package the sensor in its original shipping materials or equivalent and ship the sensor prepaid to your designated LMI location Please insure that the RMA number is clearly written on the outside of the package W...

Страница 29: ...r or LMI directly Visit our website at www sensorsthatsee com for the agent nearest you For more information on Safety and Laser classifications contact Center for Devices and Radiological Health FDA Office of Compliance HFZ 305 Attn Electronic Product Reports 2098 Gaither Road Rockville Maryland 20850 ...

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