ABSTRACT Rapid technological developments are driving the digitalization of buildings. However, turning existing buildings into smart buildings requires the placement of many sensors. This involves extensive electrical work, making implementation difficult. However, by using wireless power supply, it is possible to supply power to the sensor module through the glass without the need for wiring or electrical work. In addition, because the power supply does not include batteries, after installation, it can operate for long periods of time without additional maintenance.
Ito et al. (Mon,) studied this question.