MEASUREMENT SYSTEMS FEATURE
LASER BASED CLEARANCE test system detects foreign objects on airport landing fields
Airfield Luggage Detection, LaseALD, a measurement system designed to detect fallen items of luggage, has been installed at Cologne Bonn Airport
I/O-Module and a display for status
The new system ensures reliable detection of fallen items of luggage with minimum dimensions of 50 x 40 x 20cm, helping to avoid damage to airplane engines
A
laser-based clearance test system has been successfully commissioned by LASE PeCo Systemtechnik of Germany for the detection of foreign objects on the landing fields at Cologne Bonn Airport (CGN). The airport is one the biggest German hubs in the field of freight traffic, and laser-based object detection on the landing fields is necessary due to the existing ban on night flights. As a result, highly precise and reliable detection of objects in the crossroads area of the landing fields is needed. Previously at the airport, each
vehicle had to give a wide berth to the airfield, and the construction of a bridge or tunnel had been planned – but it wasn’t feasible due to complex structural measures. So, to meet requirements, the new Airfield Luggage Detection – LaseALD – measurement system was installed. The solution ensures reliable detection
of fallen items of luggage with minimum dimensions of 50 x 40 x 20cm, helping to avoid damage to the airplane engines. Now, before two installed boom gates close, the crossroads area is checked for foreign objects by two 3D laser scanners. The operator will then receive a message on their display – if an object is detected, an alarm will be given immediately, whereby the detected objects are
shown three-dimensionally within the LASE-Software. The system features different
hardware components, which consist of a 3D laser scanner, CAN/Ethernet converter, industrial-PC, digital
information. Point of installation of the 3D laser scanners is a pylon construction near the runway boundary. This features weather protection housing and has an individual angle setting of ±45˚. In addition, the 3D laser scanner has a scan range of up to 80m and, thanks to its high scan frequency of 20/40Hz, it detects objects reliably. The application software uses special algorithms to detect the objects on the airfield, whereby static objects like signs or boundaries are filtered out. The final status of the open space examination will be displayed on a separate monitor. According to the company, reliable
object detection can be carried out even during darkness or inclement weather.
LASE PeCo Systemtechnik
www.lase.de/en/
MONITORING THE EFFECT OF SAHARAN DUST ON PV SYSTEMS
Under a project called ‘PerduS’, the effect of Saharan dust (which travels to Europe by air) on the performance of PV systems is being studied by the German Weather Service, the Karlsruhe Institute for Technology (KIT), and meteocontrol. The German Ministry for Economic Affairs and Energy is funding PerduS for four years. The main objective
is to combine all components necessary for consideration of Saharan dust outbreaks when projecting PV performance in a forecasting process. In cooperation with KIT, an improved dispersion forecast for desert dust is being added to the German Weather Service’s numerical weather-forecasting model, ICON. The ICON-ART forecast system will be used during future dust outbreaks along with the conventional numerical weather forecast. Simulating dust dispersion, the system will provide predictions about a reduction in solar irradiance. Drawing on this information, the forecast service provider, meteocontrol, will develop PV performance predictions as well as evaluate the technical and commercial use of the new forecasting system. To expand the ICON model system, the Institute of Meteorology and Climate Research at KIT
developed a module called ART (aerosols and reactive trace gases). This makes it possible to simulate the dispersion of such particles as mineral dust and sea salt and their interaction with clouds. In the past, ICON-ART was used, also in cooperation with the German Weather Service, to simulate the dispersion of ash particles following volcano eruptions. The research focal points being pursued by KIT in PerduS are refining the description of dust emissions in the Sahara and improving the description of the interaction of dust particles and atmospheric radiation. Measurements have been taken at the Solar Storage Park on the KIT north campus to determine the
amount of residue left on solar panels by mineral dust and its impact on PV performance. In this project, researchers are also examining how precipitation can cleanse solar panels. In this process, they are using a precipitation radar, the measurement tower at KIT, additional devices for measuring drop sizes and precipitation quantities, and an aerosol lidar of the German Weather Service. The descriptions of the relevant processes drawn from these measurements will then be integrated into the ICON-ART model system.
meteocontrol
www.meteocontrol.com
INSTRUMENTATION | SEPTEMBER 2016
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