TagSense：RFID based wireless sensing method and system for wheat temperature and moisture
Grain is a major source of food, while grain security has been considered as a strategic issue in many countries. Temperature and moisture as the two key properties affect the quality of stored grain. Most existing approaches for sensing this properties are expensive, time-consuming, and are difficult to deploy. In this scheme, we utilize a commercial RFID system to affix tags onto sensing targets. The RFID reader communicates with these tags to gather tag information and acquire the target temperature and moisture. The system boasts low cost (with tags priced at only 0.3 RMB each) and facilitates easy online measurement.
Sky, Space And Communication Technologies
Wireless technologies and the Internet of Things
2 years
Henan Kaifeng of China
The system does not require the RFID tag to be tightly attached to the sensing target. The tag can be attached to a bag, a box, or a cup, and then the system can sense the temperature and moisture inside the bag or box. It also does not require a specific sensing distance or direction, it works from any angle or at any distance (within the maximum sensing range). Unlike the existing systems that employ dedicated hardware or special-purpose of high-frequency signals to extract feature parameters for property sensing, The system leverages tag input impedance and resonance frequency of the RFID signal. It is implemented using a cheap commercial-off-the-shelf (COTS) RFID tag.
1.Patent Name: Prediction Method and System for Grain Moisture Content and Temperature Based on RFID Tags. Patent number: ZL 2022 1 0118124.4； 2. The best paper award IoT & Sensor Networks on IEEE International Conference on Communications 16 – 20 May 2022 // Seoul, South Korea
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