Home Appliance Control System based on Robust Indoor User Localizationusing Wifi Signals

An application is introduced to control home appliances on the basis of an indoor user localization system using Wi-Fi signals. In this application, the user heads his smart device (smartphone or tablet) to the appliance needed to control like bulb, television, air conditioner, fan, security camera… just similarly to using a remote control. On the basis of the user location provided by a localization system, the heading orientation and the tilt angle of his smart device, the system will detect the target appliance by regarding a predefined map, and show the corresponding control panel on the smart device’s display, allowing the user to apply control command to the appliance. A small program installed on the smart device regularly scans the signal strengths to surrounding Wi-Fi access points to enable calculating the user location in 3D space by a robust hybrid method, which is based on both geometrical and probabilistic approaches. A central server is set up to realize the control commands received from the smart device.