Development of novel wireless sensor for food quality detection

Abstract

In this paper we present a wireless sensor for the monitoring of food quality. We integrate sensing capability into ultrahigh frequency (UHF) radio-frequency identification (RFID) tags through the relationship between the physical read-range and permittivity of the object we label with the RFID tags. Using the known variations of food permittivity as a function of time, we can detect the contamination time at which a food product becomes unacceptable for consumption based on the measurement of read-range with the as-designed sensing tags. This low-cost UHF RFID passive sensor was designed and experimentally tested on beef, pork, and cheese with the same storage conditions as in supermarkets. The agreement between the experimental and simulation results show the potential of this technique for practical application in food-quality tracking.

Multivariable Sensors for Ubiquitous Monitoring of Gases in the Era of Internet of Things and Industrial Internet

“…Data acquisition from sensors has been demonstrated using ubiquitous electronics components or systems, initially developed for high-volume applications. Examples of such approaches include cell phone cameras, business card readers, and computer screens for illumination and measurements of gas-induced colorimetric changes of sensing materials, mobile devices such as personal digital assistants and smartphones with auxiliary connected or device-integrated gas sensors, and RFID tags with added gas-sensing capabilities. ,,,,− The near-field communication (NFC) protocol that is available in many modern smartphones has been implemented in commercially available NFC RFID sensors for quantitation of chemical and physical parameters (e.g., moisture, humidity, temperature, and glucose). ,− …”