METHOD AND SYSTEM FOR DETECTION OF MACHINE OPERATION STATE FOR MONITORING PURPOSES

Embodiments of the invention described herein use an output of an energy harvester as an indication of the operating state of the machine, device, or process the energy harvester is associated with. In one aspect, a system is described. The system is comprised of at least one of a machine or process, a processor, and an energy harvesting device associated with the machine or process. The processor is configured to use an output of the energy harvesting device created by the machine or process to determine whether the machine or process is in a first operating state or a second operating state.