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A wireless monitoring system, which operates autonomously for up to several years, is discussed. Measurement techniques for temperature and humidity, acceleration and strain are reviewed. Data transmission is carried out by RFID and Bluetooth radio interfaces. The operation algorithm of the wireless monitoring system is reported.
The system which logs measurements of environmental parameters or states of the object structural/constructional elements is discussed. The system demonstrates an autonomous work time of more than one year and provides the reading of accumulated data using radio frequency identification technology. The design of a device for energy harvesting from the power line electric field providing autonomous...
In this paper a portative device for the ambient temperature and air humidity controlling is described. The source of power for the developed device is a general-purpose battery and an original energy harvester. The ambient parameters values are transmitted to a personal computer through radio-frequency identification (RFID) connection. Described device is also applicable as a wireless link which...
A system of wireless data transfer using energy-independent temperature and strain sensors was developed on radio-frequency identification (RFID) technology and Bluetooth (BT). In case of RFID technology, the radio wave energy conversion is used to provide the power supply of transceiver. This ensures the battery lifetime on one set of batteries up to 5 years and longer. Bluetooth technology enables...
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