Energy harvesting switches integrate into smart homes

With an integrated energy harvesting switch, there is the possibility to record each locking and unlocking actuation of a window. The window specialist Schüco International KG based in Germany has designed a solution for integrating the ZF RF switch in a locking latch, the ‘SensTrack wireless’.

This RF locking latch is attached to the window frame. When opening or closing the window, the fitting will be moved. This leads to the extension and retraction of the locking roller which actuates the ZF radio switch in the locking latch.

The mechanical activation is enough to generate a small voltage based on induction which leads to the transmission of several telegrams of the EnOcean3.0 protocol. The signal is processed in a smart home control unit which then triggers customised functions such as climate control. In large buildings this can be especially helpful to monitor the window state and therefore save on energy costs.

The concept benefits from the compact design with high energy output of the ZF energy harvesting switch. With its size of 20.1x7.3x14.3mm, it is ideal for applications with limited space requirements. In addition, due to its durable use with a lifetime of one million switching cycles, there is no maintenance work required to frequently change the components within the window frame.

The RF Switch is battery-free and the wireless technology provides flexibility in use. It can be utilised with different RF protocols - BLE5.0, EnOcean3.0 or ZigBee. The system can also be implemented for diverse applications in the smart home, building and industrial automation sectors, for applications such as lighting, shutters, and doors. With the help of these ZF products, comfort, safety and energy efficiency can be increased and improved in a smart way.