Safegate Group safedock, User Manual

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SAFEDOCK®

Safegate Group
Manual Date: 6 February 2015
Chapter: 3 OPERATION Version: 2.7
Page 14 of 22
3.2.3 Display Unit
Visibility/Readability CAT3A: 160m (T1/2) 80m (T3)
Display Type: Alphanumeric, LED
3.3 ELECTRICAL SUPPLY
The Safedock system is power supplied from the 115/230VAC mains, using an
internal power supply unit to generate the 24 VDC power used by the system.
3.4 OPERATION
This section is a brief description of the Safedock system operation. A detailed
description of the operating procedures is found in the Chapter 3 Appendix A
Operating Procedures.
1. In the Safedock system a number of aircraft types are defined by a set of
parameters such as: nose, height and optionally aircraft geometry. At start of
docking the operator assigns an aircraft. During a docking procedure the laser
equipment measures the corresponding parameters of the actual aircraft.
2. The individual Safedock system is operated from the Operator Panel at apron
level or from the Superior System. From Superior System all connected
systems can be individually controlled and monitored.
3. During the docking process, the system operates in three modes: Calibration
Check, Scanning and Tracking.
3.4.1 Calibration Check
The docking procedure starts when an aircraft type is selected from the Operator
Panel or from the Superior System/FIS. If the previous automatic auto calibration test
was not successful, then the system automatically makes a new calibration check
which must be successful, before the system changes over into Scanning mode. If
this test is not successful, the error message
AUTOCAL FAILED appears on the
Operator Panel and STOP on the Pilot Display (for information on diagnose and
rectification, see Chapter 4 MAINTENANCE, § 5. Troubleshooting.
3.4.2 Scanning
After successful calibration check, the system is switched over to the Scanning mode
for distance data collection. In this mode the laser is scanning the pre-defined docking
area to detect an approaching aircraft. When an aircraft is detected, and its
approximate position is confirmed, the system switches to Tracking mode.
3.4.3 Tracking
The Safedock system checks the nose height and optionally the outline of the
approaching aircraft and compares it to the corresponding parameters of the selected
aircraft. If there is no mismatch between these parameters, the docking process will
continue by measuring the aircraft nose position. As many aircraft have similar
profiles, all types cannot be discriminated. However a safety margin is always
checked from measurements of the approaching aircraft’s geometry, if this option has
been included.
If the safety margin is too small, the display will show STOP ID FAIL , and the docking
procedure will be automatically interrupted. The Safedock system measures the
position of the aircraft in relation to aircraft stand centreline and the defined stop-
position for the particular aircraft type. During the tracking process the relative position
of the aircraft is displayed on the Pilot Display, clearly visible for both pilots from the
aircraft cockpit.