Safegate Group safedock, User Manual

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SAFEDOCK®

Safegate Group
Manual Date: 6 February 2015
Chapter: 1 SYSTEM DESCRIPTION Version: 2.7
Page 7 of 20
The Laser Scanning Unit is housed in the lower part of the Safedock unit for model T2
& T3, and for T1 in the upper part. It is based on 3D-technology and consists of a
Laser Range Finder, comprising both a transmitting and a receiving lens. The unit
also incorporates a fixed mirror used with the calibration procedure to facilitate an
accurate setting of the Safedock system.
WARNING! INVISIBLE LASER RADIATION.
THE LASER OUTPUT FROM THIS SYSTEM IS WITHIN CLASS 1 LIMITS (USA FDA
21 CFR 1040.10
– 11 AND IEC 60825-1:2007) AS LONG AS THE RANGE FINDER
IS INSTALLED AND OPERATED AS SPECIFIED BY SAFEGATE. IF OPERATED
IN ANY OTHER FASHION THAN DESCRIBED, THE RANGE FINDER IS CAPABLE
OF EMITTING RADIATION UP TO CLASS 1M LIMITS.
1.3.3.1 Functional Description
When a docking process has been started, the Laser Range Finder transmits infrared
pulses, scanning both vertically and horizontally via a stepper motor controlled mirror
system, to detect an approaching aircraft.
The distance to the aircraft is determined by the elapsed time, taken for the infrared
pulse to be transmitted and received by the Range Finder. The Control Unit, which
handles the positioning of the scanning mirrors, uses the distance values, obtained
from the Laser, to determine the location of the aircraft, in relation to its required stop
position.
1.3.3.2 Laser Scanning Area
During capturing mode the scanning area is 20 degrees in a horizontal plane. When
an aircraft has been captured, the laser will follow the aircraft in a tracking area
according to the Safedock unit type described in following figures.
Vertical plane (side/front views) Horizontal plane (side/front views)
FIGURE 1.4 - SAFEDOCK T1 LASER SCANNING AREA
FIGURE 1.5 - SAFEDOCK T2/3 LASER SCANNING AREA