Sensor Networks for Integration into Textile-Reinforced Composites
The integration of sensor networks into textile-reinforced composites enables monitoring of different physical values like strain, acceleration and temperature in a component. This paper presents a system concept of a modular sensor network supporting different sensor types and the wireless transmission of stored measurements. Sensor and transponder ASICs have been developed for realizing first demonstration examples. The feasibility of integration of discrete components and silicon chips was successfully verified in experiments with a composite made of glass fibers and polypropylene. Two demonstrators with fully functional integrated modules were fabricated in order to show the possibility of integrated strain monitoring and recording of impact events with wireless data transmission.
A new package for textile integrated RFID tags
Permanently installed RFID tags in textiles have become a research topic of great interest in the industry. They could revolutionize the market and the daily life. Requirements for such tags are extremely high. They have to be non-obtrusive, very durable and cheap. This paper will describe a novel package and system layout that offers all these characteristics for applications which require domestic washing (e.g. clothing), but also for technical textiles. Results of different reliability tests will be presented, to prove the high durability of the developed package.
Global attractivity in time-delayed predator-prey systems
Abstract For a predator-prey model with time-delay due to gestation, criteria are obtained for persistence and global attractivity. The global attractivity criteria apply only to models with a decreasing prey isocline.