THE INTRODUCTION TO PASSIVE WIRELESS SENSORS BASED ON SURFACE ACOUSTIC WAVE AND AN ORIENTATION OF APPLICATION IN POWER TRANSMISSION SYSTEMS

Abstract

In recent years, passive wireless sensors based on surface acoustic wave have been extensively studied to improve their properties, apply them in fields of communication and signal processing - as identification tags, chemical and biosensors, and as sensors of different physical because of their outstanding advantages such as  there is no need to use any separate powers to supply them, maybe accessed wirelessly and remote monitoring the harsh indoor/outdoor environments. They work in the frequency range of 10 MHz to several GHz. In our country, some studies about their application have been  published with no mention to wireless accessibility. This paper introduces the operating principles of passive wireless sensor based on surface acoustic wave and orient of application in measuring and monitoring temperature in the power transmission systems. This orientation may be the premise for further research.