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Energy Harvesting Technology2022-12-12T14:02:38+00:00

Energy Harvesting can be described as an ‘operation without any auxiliary energy’, as the energy is generated from the surrounding environment and then converted.

ZF uses the inductive principle, meaning that the required RF energy is created by the mechanical actuation of a switch mechanism. Instead of generating auxiliary energy through an integrated energy source or adding it via an external energy supply, kinetic energy that is acting on the system is converted. Therefore an Energy Harvester generally speaking is an energy converter.

The RF data is then transmitted wirelessly via RF technology. The advantages of the system are that the switch can be placed anywhere without the need for any wires. Over its whole life cycle it will fulfill its function completely maintenance free and without any need to replace a battery, which means significantly reduced maintenance costs. The RF switch is fed with different input parameters and is capable of reacting to its environment.

Energy Harvester RF Switch System

Structurewise, the overall system with its four main parameters can be divided into two main systems: The supply voltage & the load RF-electronics – these can then be grouped into five sub-systems as you see in the diagram below.

Overall System RF Switch

Through suitable deflections the operating mechanism is transferring the actuation of the switch into the required force, path and direction of the energy converter.

Zf has designed an inductive energy converter consisting of an electromagnetic generator which changes the magnetic flux in the coils by a sudden movement of a magnet, creating an electric impulse through the actuation of the wireless switch module.