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Batteryless, wireless RF energy harvesting technology demonstration

16 September 2014

Energy harvesting technology can offers many advantages in applications where a complex wire assembly and/or batteries would be inappropriate…a benefit with the increasing demand for intelligent networking and the increasing trend for 'intelligent factories'.

The required RF-energy in the CHERRY energy harvesting technology is created by the mechanical actuation of the switch and the data is transmitted wirelessly using RF-technology. As a result there is no need for complex and expensive connection systems, which means there are no cables or batteries to change so no maintenance is required.

The technology is said to be easy to install – even in hard-to-reach places.

CHERRY offers two standardised package versions for industrial applications – a rocker switch for actuation by hand and as a snap-action switch for mechanical actuation, for example, by a machine. The switch can easily be connected with a standard SPS bus system like OpenCAN and Profibus or industrial interfaces like RS485, SPI, 4-20mA and 0-24V. The signal received simply transmits to an SPS or other industrial control.

An evaluation kit provides a functional demonstration of the technology and offers users the chance to measure signal strength and range, as well as giving the user the opportunity to test potential applications or connect to a test system. 

The evaluation kit contains an energy harvesting generator, including RF electronics integrated into a microswitch housing, a receiver PCB with multiple digital and analogue outputs, a high performance dipole antenna, a chip antenna, and a CD containing the driver and installation instructions, as well as an instruction manual.

Further information about energy harvesting  is available at:

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