Multifunctional testing platform of vehicle-mounted information system and control structure of main controller

The invention relates to a multifunctional testing platform of a vehicle-mounted information system and a control structure of a main controller. The platform consists of an automobile state data collecting card, a main controller and a USB (universal serial bus)-CAN (Controller Area Network) communication card that are sequentially connected, wherein the automobile state data collecting card is externally connected with an automobile or an automobile electronic control hardware simulator through a CAN bus for collecting and preserving the automobile state data of the automobile or the automobile electric control hardware simulator for external test by the testing platform; and the USB-CAN communication card is connected with the vehicle-mounted information system through a USB interface to realize data transmission between the main controller and the vehicle-mounted information system. The automobile state data collecting card comprises a collecting card integrating expanded SDRAM (Synchronous Dynamic Random Access Memory) and FLASH, wherein a CAN interface circuit, a serial circuit, a debugging serial port, a JTAG interface and a reset circuit are arranged on the periphery of the collecting chip. The invention is low in cost, is convenient and easy to use, and has the functions of fault state simulation, fault alarm code transmission, automobile information display, simulating operation of the multimedia entertainment function, and the like.