The laser and opto Web site
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Features · 0-2Km range · 10-20cm accuracy · Automatic operation · Intrinsically safe targets · Single or multiple target tracking |
| Advantages · Passive targets · No radio licence required · Multi targets · Compute heading (in multi range) · Low cost · Simple to use and install |
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MDL are manufacturers and designers of laser based positioning and trackingsystems. Using the latest gallium arsenide laser diode technology MDL have produced a marinised radar system suitable for repetitive, high accuracy
positioning and tracking of marine vessels, floats and other targets of interest. Development of the system commenced approximately 9 years ago. Today over 200 systems have been sold to the seismic and DP industries. The latest MKIII high accuracy model of Fanbeamä has been developed to broaden its appeal to hydrographic
Product Description
The Fanbeam provides an automatic scanning range and bearing measurement system which combines the convenience of radar with the accuracy of laser ranging.
The basic principle of laser ranging is to measure the time that a pulse of light takes to travel from the laser to the target and back again, then calculate the distance by multiplying this time by the speed of light, which is constant.
Principle of Operation
A Fanbeam system comprises of a Fan beam laser unit mounted on a gearbox/ encoder assembly. The Fanbeam' of pulsed laser light is produced by a multiple array of semiconductor laser diodes in combination with special optics. A pulse reflected from a reflective target is timed and multiplied by the speed of light to give a distance. At the instance of a received return the electro, optical encoder is triggered to give the angle. The laser unit runs at 5,000Hz thus allowing a number of returns to be registered for each target. Processing of these returns within the unit allows increased range and angular accuracy to be achieved.
The vessel or tripod mounted unit is controlled remotely by cable from a custom universal control unit or PC computer with custom software.
Deployment and Operation
Single Target Auto Tracking Hydrograpahic Survey
Auto Tracking Multi Target Vessel Movement/Berthing Control
Fixed Sector Multi Target Harbour Dredging
B. On a mobile vessel - examples:
Fixed Sector Scan Seismic Gun Array Tracking
Auto Tracking Multi Target Dynamic Position Keeping
360° ° Continuous Scanning Multi Target Pipe Laying/Anchor Control
Technical Specification
Laser Type Semiconducting laser diode array Wavelength 0.9 microns
Eye safety Class 1 Beam Divergence Vertical 20° Horizontal 1 milli radian
Max. Range 2,000m+ (weather dependent)
Range Accuracy 20cm/ 10cm possible (dependent on target and scan rate)
Mechanics
Construction Machined aluminium
Gear Box Stepper driven worm and wheel
Angular resolution Better than 0.02º
Scan speed Up to 50ºper second
Environmental
Water & Dust Resistant IP66 (hose proof)
Operating Temperature -10ºC to +45ºC
Physical Data
Fanbeam Unit
Dimensions (WxLxH) 200x300x320mm
Weight 13.6kgs
Power 24V DC 1.5 amp
Interfacing Current loop 20 mA digital current loop
Baud rate 9600
Mains Power Supply
Universal Input 85V - 264V AC/ 47 - 440Hz
Dimensions (WxLxH) 160x260x140mm
Weight 6kgs
Universal Control Unit (UCU)
PC system 486 based
Display External VGA output
Size (WxLxH) 120x240x45mm
Weight 1.6kgs
Information contained herein is believed to be accurate. However, no responsibility is assumed by MDL for its use. Technical data are subject to changewithout notice
| LaseroptronixAB |
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Telephone 46-70 714 04 70
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| Enhagsslingan 23 |
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| 187 40 Täby |
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Säte i Täby Kommun Glimmervägen 8 187 34 Täby / Sweden |
| Sweden North Europe |
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Created 2010 06 187 by Allan Jansson
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