The wheel system is an important component of the printing press,and the condition monitoring of the printing press wheel system is of great significance for guaranteeing the quality of printed products and the safety of the equipment.In order to solve the energy and range problems of the wireless condition monitoring system inside the printing press,a self-powered technology-based energy harvesting method for wireless passive printing press condition monitoring was proposed in this study.This method harvested the rotational mechanical energy of the printing press wheel system through an electromagnetic energy harvester to maintain the data acquisition for the low-power wireless passive condition monitoring system inside the printing press.Firstly,the rotational speed characteristics of the wheel system under the normal operation of a modern high-speed printing machine were investigated.Secondly,the energy harvesting device was designed.After that,the structure of the device was improved according to the theoretical analysis and the finite element simulation results.Finally,the prototype machine for testing,and the simulation results with the experimental results were compared to validate the validity of the energy harvesting method.It is experimentally verified that the energy harvester achieves the maximum output power of 275.28mW at 1000r/m when the external load resistance is 50Ω.Meanwhile,there is a good linear relationship between the voltage and the speed of the device,which proves that it also has the potential to be used as a speed-monitoring sensor.
Wheel system of printing pressSelf-powered technologyWireless condition monitoringEnergy harvesting
NETL
NSTL
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