A virtual sensor network system is provided that includes a virtual sensor node that stores sensor data collected from a sensor mounted within a vehicle in time synchronization therewith and provides the stored sensor data in time synchronization therewith, in addition, a master node performs a control on the virtual sensor node and executes an algorithm used in an intelligent vehicle using the sensor data. The master node receives the sensor data stored in the virtual sensor node as the virtual sensor data in time synchronization therewith, without inputting actual sensor data from the sensor mounted within the vehicle when executing the algorithm.