Abstract:The current vehicle monitoring system for large vehicles monitoring process, easily affected by environmental uncontrollable factors, cause monitoring process form a single, details of vehicle recognition accuracy is low. Put forward based on fuzzy vision technology of large vehicle monitoring system design method. System consists of the two parts of hardware and software. Hardware part has carried on the design with the FPGA as the core, focusing on traffic image acquisition module, the cache module, camera solutions, monitor, and elaborates the embedded processor solution; Software part, first of all, the image preprocessing to eliminate noise in image, the introduction of the visual characteristics of vehicle details fuzzy recognition model represents the interference of external random factors, according to the result of the output of the model calculating vehicle details the characteristics of the pixel density, can be to accurately identify the details of the vehicle state. The experimental results show that the use of design of monitoring system to monitor large vehicles, can effectively improve the monitoring accuracy, strong stability.