Filtern
Erscheinungsjahr
- 2014 (17) (entfernen)
Dokumenttyp
- Beitrag zu einem Tagungsband (7)
- Zeitschriftenartikel (3)
- Vortrag (3)
- Posterpräsentation (2)
- Forschungsbericht (2)
Schlagworte
- Autonomous micro UAV (2)
- Data fusion (2)
- Gas source localization (2)
- Gas storage areas (2)
- Hazardous scenarios (2)
- Membrane-based gas sensing (2)
- Monitoring (2)
- Sensortechnik (2)
- Subsurface monitoring (2)
- Air-based (1)
- Bauwerk (1)
- Biologically inspired robots (1)
- Bridge components (1)
- Chemical and wind sensing (1)
- Condition monitoring (1)
- Dangerous goods (1)
- Distributed sensor (1)
- Drop test (1)
- Fiber optical sensing (1)
- Fibre optical sensing (1)
- Gasmessung (1)
- Gefahrenszenarien (1)
- Large scale soil test field (1)
- Linear sensor (1)
- Localization (1)
- Mesh routing (1)
- Mikrodrohne (1)
- Mobile robot olfaction (1)
- Monitoring of CO2 (1)
- Multi-hop (1)
- Multi-sensor (1)
- Multi-sensor system (1)
- Multichannel measuring (1)
- Particle filter (1)
- RFID Sensor systems (1)
- Reactive plume tracking (1)
- Safety management (1)
- Schadenfrüherkennung (1)
- Single cable system (1)
- Technische Infrastruktur (1)
- Technische Überwachung (1)
- UAV (1)
- WSN (1)
- Windvektorbestimmung (1)
Eingeladener Vortrag
- nein (3)
Linear Sensor for Areal Subsurface Gas Monitoring - Calibration Routine and Validation Experiments
(2014)
The combination of different types of sensors to multi-sensor devices offers excellent potential for monitoring applications. This should be demonstrated by means of four different examples of actual developments carried out by Federal Institute for Materials Research and Testing (BAM): monitoring and indoor localization of relief forces, a micro-drone for gas measurement in hazardous scenarios, sensor-enabled radio-frequency identification (RFID) tags for safeguard of dangerous goods, and a multifunctional sensor for spatially resolved under-surface monitoring of gas storage areas. Objective of the presented projects is to increase the personal and technical safety in hazardous scenarios. These examples should point to application specific challenges for the applied components and infrastructure, and it should emphasize the potential of multi-sensor systems and sensor data fusion.
Linear sensor for areal subsurface gas monitoring - calibration routine and validation experiments
(2014)
Membrane based linear gas sensors and fiber optical sensors feature similar geometries and complement each other in quantities to be measured. To the author's best knowledge, it is the first time that these sensors are combined to a multifunctional sensor for distributed measuring of gas concentrations, temperature, and strain. Objective is a comprehensive monitoring of underground gas storage areas. In the presented project a 400 m² test site and a corresponding laboratory system were just built up to characterize, validate, and optimize the combined sensor. Application of the sensor lines in a grid structure should enable spatial resolution of the measurement data and early detection of relevant events, as gas leakage, temperature change, or mechanical impact. A Calibration routine was developed which can be applied subsequent to underground installation. First measurement results indicate the potential of the method, with regard to highly topical energy transport and storage issues.
The combination of radio-frequency identification (RFID) tags with different types of sensors offers excellent potential for applications with regard to identification, diagnosis, and monitoring. This should be demonstrated by means of two examples of actual developments carried out by the Federal Institute for Materials Research and Testing (BAM). The Identification and diagnosis of concrete components is a major task in the maintenance of critical infrastructure, for instance concrete bridges with heavy traffic volume. A feasibility study investigates the application of RFID sensor systems for this task. The second example reviews the transportation of dangerous goods. Using modern technologies enables promising possibilities to reduce accidents and to avoid non-conformity with transportation regulations. Project results demonstrate an innovative technical solution for monitoring of dangerous goods transports with RFID sensor systems.
The measurement characteristics of every conventional accelerometer are temperature dependent - often to an extent which is highly relevant for the addressed application. For instance, at BAM Container drop tests are performed to investigate and evaluate the structural integrity of Containers for transport and storage of dangerous goods. Often, the test program includes drop tests at specific temperatures, also as part of approval procedures. The applied sensors are exposed to these test conditions and get influenced by them. Acceleration sensors show a considerable temperature influence on their fünction and characteristics. Particularly the damping mechanism of the seismic mass is a critical part. In regard to such applications, capable equipment and methods are required to consider and investigate this aspect in an adequate way. A fortiori as Manufacturer’s infonnation often is deficient. This study presents the setup and results of a method for testing and calibration of acceleration sensors under high dynamic irnpact. It combines a Hopkinson Bar with a temperature chamber.
Multichannel measuring systems are used to measure strains and accelerations during drop tests of containments for dangerous goods. Conventional systems require cabling of each sensor and co-falling of the cable harness, causing problems in the test preparation and execution. Promising results of a single cable measuring system, consisting of measuring modules with data bus connection and local data acquisition were obtained in laboratory investigations and full-scale drop tests.