No abstract

The temperature stability of the sensor has been greatly improved by using the differential compensation method, which validates the effectiveness of the proposed method.

The temperature monitoring is important for the safety of power station. In this paper, a surface acoustic wave sensor was designed for measuring the temperature of high voltage switchgear in the power station. The coupling of modes analysis was used for simulating the device and a SAW resonator was fabricated based on the simulation result, which had sharp peak and large amplitude of S11. The sensor was then tested from -20 °C to 120 °C using network analyzer. The obtained sensitivity of the sensor was about -26 KHz/°C. This small, reliable and safe sensor is very promising for application in measuring the temperature of high voltage switchgear.