Electro-magnetic resonance coupling sensing for secure, comfortable and energy-saving space

In this paper, a novel sensing method using electromagnetic resonance coupling to realize secure, comfortable and energy-saving space is proposed. Proposed sensing method is especially suitable for our living space since it is powerful in sensing range of 0-1[m]. It has big advantages compared to the current sensors such as camera, LRF, pressure sensor, RFID, ZPS and capacitive sensor since it is strong to illumination change, has no occlusion because of high insulation permeability, can be contact-less, no attachment required and sensing range comparatively wider than capacitive sensor. In this paper, basic concepts of the proposed sensing method are introduced with two practical application systems, high performance human detection system and efficient wireless power transmission system. High performance human detection system is the system which could differentiate human from other living natures or high conductivity and permittivity materials which is not possible in current pyroelectric sensor or capacitive sensor. It could realize effective range over 0.2[m] with no occlusion and no attachment required to human. Efficient wireless power transmission is the system which realizes highly efficient power transmission for mobile targets by combination of both power transmission and position sensing. It could be the basic technology for an indoor and outdoor smart grid system in the future. To verify the feasibility of the applications, some simulation and experimental results are shown.