RFID sensor system for intelligent facades

The integration of the wireless RFID-transponder system (Radio Frequency identification technology) into components (intelligent building material) with built-in humidity and temperature sensors allows for a non-destructive acquisition of measurement data regarding the current hygrothermal condition of the building. Even during long-term use, quality assurance of the building system can be achieved by “looking into” the component. This supports the sustainability of the building in technical and ecological respect.

Radio Frequency identification technology is a new generation of a transponder system with integrated humidity and temperature sensors. Depending on the mode of operation, the RFID transponder systems are divided into passive and active systems:

A passive system is wireless and battery less, with a passive operation, powered by the radio frequency (RF) field of a reader unit.

The active transponder has its own energy source (in the form of a battery), which supplies both, the chip and the data transmission. Because of this, those transponders are not dependent on a small distance to a reader (reading range is up to 100 m) and can permanently read and store measurement data. The active system is mainly used in test houses, where measured data are to be recorded in defined time steps and especially in the long term.

The RFID-sensor is especially designed for measurement tasks, where wired connections are not feasible, e.g. for inspection of heat insulation parts of buildings. Because of its flat design it can easily be integrated in customers’ applications.

The humidity and temperature transponder can be read using mobile or stationary reader units. Measurement is initiated by the remote reader unit that wakes up the sensor by applying a radio frequency (RF) field.

Using this innovative technology, dynamic information about the current state of specific components and building systems will be recorded and evaluated. Even during the building use, the guaranty of the quality could be achieved by “looking into” the construction.

An integration of this innovative wireless humidity and temperature sensors in insulation boards allow nondestructive measurements and state diagnosis at any time. Hence, the aim is focused to support sustainable buildings in the technical and ecological quality through the electronic identification and monitoring system.

For further information please see www.dr-rmi.de  (RFID-Videos)

If you have any questions please don’t hesitate to contact Mr. Dr. Bishara (+49 6154 7172075 or ayman.bishara@dr-rmi.de).

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