The system proposed in this paper aims at monitoring
the torque and efficiency in induction motors in real time by employing
wireless sensor networks (WSNs). An embedded system is employed for acquiring
electrical signals from the motor in a noninvasive manner, and then performing
local processing for torque and efficiency estimation. The values calculated by
the embedded system are transmitted to a monitoring unit through an IEEE
802.15.4-based WSN. At the base unit, various motors can be monitored in real
time. An experimental study was conducted for observing the relationship
between theWSN performance and the spectral occupancy at the operating
environment. This study demonstrated that the use of intelligent nodes,with
local processing capability, is essential for this type of application. The
embedded system was deployed on a workbench, and studies were conducted to
analyze torque and system efficiency.
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