Mateusz Lisowski

RFID Based Sensing for Structural Health Monitoring

RFID is a rapidly developing technology of wireless communication and identification mostly used in supply chain systems, logistic and access control. Nowadays attempts to transfer this technology to other applications are carried out. This paper presents review of global researches performed last years, on application of RFID technology to tasks connected with wireless passive sensing in Structural Health Monitoring, with additional overview of works conducted in this subject by the authors. Sensors based on this technology require neither battery nor wire. It could be interrogated from distance, its lifetime is almost unlimited. Investigations, focused both on using RFID transponder as a sensing element, as well as, using antenna as a energy harvesting part that could power the sensor circuit, are mentioned. Performed studies show, that despite problems connected with using high frequencies, described wireless sensors should be useful for SHM tasks.

Wireless Passive RFID-Based Sensor for Crack Detection - Second Stage of Investigations

This paper presents second stage of investigations on passive, wireless sensor based on RFID technology for detection of cracks in ceramic parts, plates and equipment (simulation and experiments of operating principle, prototypes that check manufacturing possibilities, process of transponder design). We focused on prototyping of such sensor and we want to present subsequent steps that lead from concept to working prototype. Although it was presented earlier, there is also described shortly project conception of this kind of sensor, and its principle of operation. Important part are also possible applications specification.

Development of Wireless Passive Sensing Platform – Communication Issues

This paper presents a concept and investigations on wireless sensing platform utilizing Radio Frequency Identification (RFID) technology. The platform should serve as a completely passive wireless communication interface between any connected sensor (strain gauge, accelerometer, pressure sensor) and standard RFID reader. Entire energy needed for powering is delivered via magnetic coupling between the reader and a planar coil antenna, which is one of the platform parts. The same electromagnetic signal serves for communication and data acquisition based on backscattering technique. Designed platform could be used in many applications, especially in structural health monitoring (SHM) and for advanced diagnostic purposes. Scope of the parts of investigations presented in this work was acceleration of data rate between the platform and the reader. Efficient data transfer is the primary problem in many potential applications. By improvement of communication and data storage algorithms, as well as testing of different types of RFID readers, we achieve effective data rate on the level of 18 Kbit/s. By meaning of the effective data rate, it is defined data stored from sensor on EEPROM memory, not only UID, that is transferred in typical RFID systems.