The Internet of vehicles is the network between vehicles, roads and people. The application of vehicle Internet is mainly vehicle sensor network and road sensor network. Vehicle sensor network can be divided into vehicle sensor network and vehicle sensor network. In a car sensor network, it is a network that provides people with information about the condition of their car. The off-vehicle sensor network is a kind of sensor network that can perceive the condition of the off-vehicle environment. Road sensor network refers to the sensor used for sensing and transmitting road information, which is generally laid on the road and roadside. Sensor network plays a role of environmental perception in the vehicle, outside the vehicle and on the road, and acquires unique "content" for "vehicle Internet". The integration of these "contents", namely the integration of sensor network information, will be an important and unique technology development content of "vehicle Internet". Through the automatic analysis, synthesis, reasonable control and use of the observation information of these sensors and computer technology under certain standards, the redundant or complementary information obtained by various single sensors is combined according to certain standards to form the multi-sensor information fusion based on knowledge reasoning.