Wireless temperature sensing in electrical motors with XBee modules

This paper describes a wireless temperature measurement system, aimed to thermal analyses of rotating parts of electrical machines. The device was designed and manufactured in small dimensions, feasible for installations in small-size machines (less than 15 kW). The temperature of rotating parts is measured through thermocouples, whose signal is properly conditioned and then sent to PC through XBee wireless modules. The sensor has been successfully tested on a 13 kW electric motor.