Sensors and Sensing Technology: RFID Devices

Dear Colleagues,

RFID sensor technology is proving to be a very promising field within IoT technologies. There are passive or semi-passive sensor tags which do not need a direct line of sight with the reader to backscatter their sensed information. This allows the sensors to be embedded in clothing, objects, or even the body itself, proving itself as a passive non-intrusive technology.

There are many types of RFID sensors: NFC sensors, UHF sensors (with or without chips), and commercial tags used as sensors. Each of them has advantages and disadvantages, but all of them share the same main restriction: a reader must provide the reading signal and power signal in order for the sensors to be able to answer. This limits the type of sensor applications that can be performed, and, in addition, a great deal of work must be carried out to process the information obtained, making the use of AI of great interest. An example is the use of a commercial off-the-shelf (COTS) tag and the postprocessing of its raw signal to obtain information and analyze its response. This is a typical sensing application that uses an extremely cheap sensor.

Many fields are perfect candidates for applying this technology: home automation, industry, navigation, automotive manufacturing, and robotics. This Special Issue focuses on applications or successful cases using RFID sensors. It also focuses on the use of this type of sensor and the resolution of various problems involved in their use, such as the processing of information using AI algorithms. Potential topics include, but are not limited to, the following:

• RFID sensing in industry;
• Energy scavenging wireless sensors and ambient backscatter communication applications;
• UHF RFID sensors applications;
• Applications using RFID wearables;
• Artificial intelligence algorithms applied to RFID sensing;
• Pattern recognition on RFID sensing applications.

Dr. Hugo Landaluce
Dr. Alberto Tellaeche
Dr. Laura Arjona
Guest Editors

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