Scopes, challenges and approaches of energy harvesting for wireless sensor nodes in machine condition monitoring systems: A review

Machine condition monitoring (MCM) plays an important role in reducing failure losses in the industry. Appropriate wireless sensor nodes (WSNs) used in MCM will allow the user to check the live status of machines. WSNs have numerous features, however, there are a lot of challenges in deploying the WSNs. One of the main challenges is the periodic replacement of batteries. Recently promising energy harvesting technologies have attracted the...