Refine
Document Type
Conference Type
- Konferenzartikel (1)
Is part of the Bibliography
- yes (6)
Keywords
- Medizintechnik (3)
- Angewandte Forschung (1)
- Antenne (1)
- Applikation (1)
- Bioelement (1)
- Formale Beschreibung (1)
- Integrierte Schaltung (1)
- Kleintiere (1)
- Passives Bauelement (1)
- RFID-Reader; TeleMed (1)
Institute
Open Access
- Open Access (3)
- Closed (1)
- Closed Access (1)
Formal Description of Inductive Air Interfaces Using Thévenin's Theorem and Numerical Analysis
(2014)
With the development of new integrated circuits to interface radio frequency identification protocols, inductive air interfaces have become more and more important. Near field communication is not only able to communicate, but also possible to transfer power wirelessly and to build up passive devices for logistical and medical applications. In this way, the power management on the transponder becomes more and more relevant. A designer has to optimize power consumption as well as energy harvesting from the magnetic field. This paper discusses a model with simple equations to improve transponder antenna matching. Furthermore, a new numerical analysis technique is presented to calculate the coupling factors, inductions, and magnetic fields of multiantenna systems.
Mice and rats make up 95% of all animals used in medical research and drug discovery and development. Monitoring of physiological functions such as ECG, blood pressure, and body temperature over the entire period of an experiment is often required. Restraining of the animals in order to obtain this data can cause great inconvenience. The use of telemetric systems solves this problem and provides more reliable results. However, these devices are mostly equipped with batteries, which limit the time of operation or they use passive power supplies, which affects the operating range. The semi-passive telemetric implant being presented is based on RFID technology and overcomes these obstacles. The device is inductively powered using the magnetic field of a common RFID reader device underneath the cage, but is also able to operate for several hours autonomously. Being independent from the battery capacity, it is possible to use the implant over a long period of time or to re-use the device several times in different animals, thus avoiding the disadvantages of existing systems and reducing the costs of purchase and refurbishment.
Das Institut für Angewandte Forschung arbeitet seit Jahren an RFID-Applikationen unter Verwendung des Protokolls nach ISO15693-Standard. Wir entwickeln in dem Zusammenhang sowohl Frontendelektronik als auch Reader, die es ermöglichen, diese Tags auszulesen. Projekte der vergangenen Jahre waren sowohl SEAGsens als auch medizintechnische Anwendungen unterschiedlichster Art.
In this paper, a complete passive transponder device has been discussed which is meant to monitor leakage in silicone breast implants. The passive tag operates in the HF frequency range of 13.56MHz using RFID ISO 15693 standard. The complete system consists of the transponder, reader and a PC. This paper focusses on the development of such a state of the art passive RFID transponder to monitor the wellness of the silicone breast implants periodically in order to detect leakage in the same. Keyword: RFID (Radio frequency identification device), EM (Electromagnetic) field, Passive Transponder, Silicone breast implants.