This paper proposed a solution to realize the virtual proximity sensor (P-Sensor) based on usual touch panel. The principle of the distance detection based on capacitance touch panel is introduced firstly. And the hardware system is developed according to the baseband and power management units. Using the UML (unified modeling language) sequence diagram, the control channel framework for the virtual P-Sensor is realized based on server-client system. With the distance detection results, the screen can be turn on or off automatically to save power consumption.