关键词: 车辆仪表, 电磁脉冲效应, 智能监测系统, 视频采集前端, 智能监测终端 

Abstract: To accurately identify abnormal data on the vehicle instrument panel during electromagnetic pulse effect test, a remote intelligent monitoring system for vehicle instrument with resistance to electromagnetic pulse interference is designed and implemented. The instrument design and dynamic simulation software SimHub is utilized to simulate the vehicle electromagnetic pulse effect phenomenon, corresponding to pointer deflection angle changes and abnormal alarm icon displays on the instrument panel. A video acquisition front-end based on embedded system development, optical network transmission and electromagnetic protection technology is designed. The electric field shielding effectiveness of the shell is analyzed using the three-dimensional electromagnetic simulation software CST ( Computer Simulation Technology Studio Suite). Real-time video acquisition of instrument panel and remote fiber-optic transmission under electromagnetic pulse environment are realized. An intelligent monitoring terminal software integrating dynamic tracking and feature enhancement is developed. The pointer deflection angle changes and abnormal alarm icon displays in the monitoring video streams of instrument panel are automatically identified. System testing results indicate that the average error in calculating pointer deflection angles is within 2°, and the recognition accuracy for abnormal alarm icon displays reaches 96. 3%. Remote intelligent monitoring of vehicle instrument electromagnetic pulse effect phenomenon is realized.

Key words: vehicle instrument, electromagnetic pulse effect, intelligent monitoring system, video acquisition front-end, intelligent monitoring terminal