@misc{JahrTrofimov2019, author = {Jahr, Andreas and Trofimov, Igor}, title = {F{\"o}rdersystem f{\"u}r Sch{\"u}ttg{\"u}ter}, year = {2019}, abstract = {Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Ermittlung der Masse und F{\"o}rdergeschwindigkeit von Sch{\"u}ttg{\"u}tern in einem Linearf{\"o}rderer, wobei aus einem Sch{\"u}ttgutbeh{\"a}lter das Sch{\"u}ttgut {\"u}ber eine M{\"u}ndung auf eine F{\"o}rderrinne gelangt.}, language = {de} } @inproceedings{StuhlsatzWedellMoorsetal.2019, author = {Stuhlsatz, Andr{\´e} and Wedell, Tobias and Moors, Mark and Schulze, Stephan}, title = {A smart measuring system for intelligent data acquisition in steel plants}, series = {METEC \& 4th ESTAD 2019, European Steel Technology and Application Day, CCD Congress Center D{\"u}sseldorf, 24-28 June 2019}, booktitle = {METEC \& 4th ESTAD 2019, European Steel Technology and Application Day, CCD Congress Center D{\"u}sseldorf, 24-28 June 2019}, publisher = {Steel Institute VDEh}, address = {D{\"u}sseldorf}, year = {2019}, abstract = {Sensing and acquiring reliable physical values are the fundamentals, not only for a predictive maintenance or quality assessment, but especially for big data analysis and sophisticated Industry 4.0 applications. In steel plants, physical values are distributed over the complete process chain of steel making while the environmental conditions are harsh with respect to high temperature, aggressive fluids, water, shock and dust. These conditions render the use of electronic devices focusing a consumer market impossible.The developed self-contained smart measuring system presented in this paper survives in harsh environments and is composed of small-sized modules providing miscellaneous functionalities. The high degree of modularity in hard-and software facilitates a cost-effective adaptation to many applications, like vibration monitoring, temperature logging or torque measurement. Different onboard measurement components are available yet, namely high sensitive bridge amplifiers for strain measurements, accelerometers, gyroscopes, orientation-, temperature- and humidity sensors as well as an unique system identification. A communication module enables wireless transmission of the acquired data via Bluetooth or NFC online. Moreover, different power supply features are supported by the power module: Ultra-low power modes for long-life battery use, recharging of lithium cells, and an inductive power supply for wireless power transfer for applications with moving or rotating components. The heart of the system is a powerful ARM based microcontroller which enables an intelligent analysis of the data in situ. This is especially important where data size and complexity is the relevant factor for example in area-wide sensor networks.}, language = {en} } @inproceedings{WeberKramerPohletal.2019, author = {Weber, Konradin and Kramer, Tim and Pohl, Tobias and Fischer, Christian}, title = {Evaluation und Vergleich von kosteng{\"u}nstigen Sensoren f{\"u}r Feinstaub}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, publisher = {Deutsche Physikalische Gesellschaft e.V.}, address = {Bad Honnef}, year = {2019}, subject = {Messtechnik}, language = {de} } @inproceedings{WeberHewelingPohletal.2019, author = {Weber, Konradin and Heweling, Georg and Pohl, Tobias and Fischer, Christian and B{\"o}hlke, Christoph}, title = {Untersuchung der raum-zeitlichen Variabilit{\"a}t verschiedener Luftschadstoffe in der Innenstadt D{\"u}sseldorfs mit mobilen Messungen}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, publisher = {Deutsche Physikalische Gesellschaft e.V.}, address = {Bad Honnef}, year = {2019}, subject = {Luftverunreinigender Stoff}, language = {de} } @inproceedings{WeberThielkeFischer2019, author = {Weber, Konradin and Thielke, Jan and Fischer, Christian}, title = {Evaluation of selected physical parameters measured with smartphones}, series = {Verhandlungen der Deutschen Physikalische Gesellschaft e.V.}, booktitle = {Verhandlungen der Deutschen Physikalische Gesellschaft e.V.}, publisher = {Deutsche Physikalische Gesellschaft e.V.}, address = {Bad Honnef}, year = {2019}, subject = {Messtechnik}, language = {en} } @inproceedings{WeberKramerFischeretal.2019, author = {Weber, Konradin and Kramer, Tim and Fischer, Christian and Pohl, Tobias and B{\"o}hlke, Christoph}, title = {Evaluation of low cost and mid cost sensors for fine particulate matter at urban sites}, series = {Geophysical Research Abstracts: EGU General Assembly 2019}, volume = {21}, booktitle = {Geophysical Research Abstracts: EGU General Assembly 2019}, publisher = {Copernicus}, address = {G{\"o}ttingen}, year = {2019}, abstract = {High ambient air concentrations of fine particulate matter are a problem in many European cities, especially in traffic loaded street canyons. Therefore, the introduction of traffic restricted or traffic reduced areas is discussed as a countermeasure in several towns. However, at that point it is not always clear, in what extent the restriction of traffic in presently overloaded streets causes the exceeding of limit values in other areas of the town after the redirection of the traffic. Presently this cannot be recorded appropriately, when the concentrations of fine particulate matter are monitored only at rarely distributed single points by the official measurement systems of the environmental state agencies. On the other hand, meanwhile there are low cost and mid cost sensors for the measurement of fine particulate matter available, which enable the parallel monitoring with many measurement systems in an extended area of the town. By this way, the effect of traffic restrictions on the distribution of fine particulate matter in the city can potentially be observed. However, at this point the question arises, how reliable the results are, which are delivered by the low and mid cost sensors for fine particulate matter. For this reason different low cost and mid cost sensors have been evaluated for this study and intercompared with certified reference measurement systems for fine particulate matter. The study comprised the sensors SDS011 (Nova Fitness), which is in use already for several citizen science projects in Germany, SPS30 (Sensirion), OPC-R1 (Alphasense), OPC-N2 (Alphasense) and OPC-N3 (Alphasense). This study was performed at urban sites in D{\"u}sseldorf (Germany) for several weeks and covered different traffic loads and different meteorological situations, in order to get representative results. As atmospheric humidity can influence the measurement results, the humidity was measured in parallel to the fine particulate matter. It could be shown that the validity of the measurement results of fine particulate matter could be improved, when the parallel readings of the humidity were taken into account.}, subject = {Messtechnik}, language = {en} } @inproceedings{PohlWeberFischeretal.2019, author = {Pohl, Tobias and Weber, Konradin and Fischer, Christian and Kramer, Tim}, title = {Investigation of the Temporal and Spatial Distribution of Ultrafine Particles with Stationary and Mobile Measurements at the International Airport in Duesseldorf}, series = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, booktitle = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, year = {2019}, subject = {Feinstaub}, language = {en} } @inproceedings{WeberKramerFischeretal.2019, author = {Weber, Konradin and Kramer, Tim and Fischer, Christian and Pohl, Tobias and B{\"o}hlke, Christoph}, title = {Application and Feld-Testing of Different Low Cost Sensors for Particulate Matter}, series = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, booktitle = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, year = {2019}, subject = {Messtechnik}, language = {en} } @inproceedings{OPUS4-5070, title = {SPIE Proceedings, Remote Sensing of Clouds and the Atmosphere XXIV}, volume = {11152}, editor = {Comer{\´o}n, Adolfo and Kassianov, Evgueni I. and Sch{\"a}fer, Klaus and Picard, Richard H. and Weber, Konradin and Singh, Upendra N.}, publisher = {SPIE}, isbn = {9781510630086}, issn = {1996-756X}, year = {2019}, subject = {Telemetrie}, language = {en} } @article{RolletterKaminskiAciretal.2019, author = {Rolletter, Michael and Kaminski, Martin and Acir, Ismail-Hakki and Bohn, Birger and Dorn, Hans-Peter and Li, Xin and Lutz, Anna and Nehr, Sascha and Rohrer, Franz and Tillmann, Ralf and Wegener, Robert and Hofzumahaus, Andreas and Kiendler-Scharr, Astrid and Wahner, Andreas and Fuchs, Hendrik}, title = {Investigation of the α-pinene photooxidation by OH in the atmospheric simulation chamber SAPHIR}, series = {Atmospheric Chemistry and Physics}, volume = {19}, journal = {Atmospheric Chemistry and Physics}, number = {18}, publisher = {Copernicus}, issn = {1680-7324}, doi = {10.5194/acp-19-11635-2019}, pages = {11635 -- 11649}, year = {2019}, abstract = {Abstract. The photooxidation of the most abundant monoterpene, α-pinene, by the hydroxyl radical (OH) was investigated at atmospheric concentrations in the atmospheric simulation chamber SAPHIR. Concentrations of nitric oxide (NO) were below 120 pptv. Yields of organic oxidation products are determined from measured time series giving values of 0.11±0.05, 0.19±0.06, and 0.05±0.03 for formaldehyde, acetone, and pinonaldehyde, respectively. The pinonaldehyde yield is at the low side of yields measured in previous laboratory studies, ranging from 0.06 to 0.87. These studies were mostly performed at reactant concentrations much higher than observed in the atmosphere. Time series of measured radical and trace-gas concentrations are compared to results from model calculations applying the Master Chemical Mechanism (MCM) 3.3.1. The model predicts pinonaldehyde mixing ratios that are at least a factor of 4 higher than measured values. At the same time, modeled hydroxyl and hydroperoxy (HO2) radical concentrations are approximately 25 \% lower than measured values. Vereecken et al. (2007) suggested a shift of the initial organic peroxy radical (RO2) distribution towards RO2 species that do not yield pinonaldehyde but produce other organic products. Implementing these modifications reduces the model-measurement gap of pinonaldehyde by 20 \% and also improves the agreement in modeled and measured radical concentrations by 10 \%. However, the chemical oxidation mechanism needs further adjustment to explain observed radical and pinonaldehyde concentrations. This could be achieved by adjusting the initial RO2 distribution, but could also be done by implementing alternative reaction channels of RO2 species that currently lead to the formation of pinonaldehyde in the model.}, language = {en} }