Wireless Overhead Line Temperature Sensor Based on RF Cavity Resonance, Design Improvement and Measurement

A wireless sensor has been designed to monitor overhead line temperature. The economic importance of this issue is to maximize the power transfer capacity of the lines. The sensor has two main parts, a local interrogator and a passive battery-less sensor. The power to turn on sensor comes from interrogator. The sensor measures the temperature, and transfers the data to interrogator for signal processing. The measurement accuracy of the sensor is reported to be about 0.07°C. There are some sources of error in sensor measurements. One of these errors is due to environmental noises and wireless interference. The objective of this internship has two parts. First is using the designed sensor to do measurements in different sites to monitor temperature and find the effect of interference on the results. This part is going to be done in about 1.5 month. For the next half, these results are going to be used to improve sensor measurement accuracy and decreasing the effect of interference on results.

Kaveh Mohammad
Faculty Supervisor: 
Dr. Douglas Thomson