JL-700 into lin technology a new generation of portable car products. Based on the lightweight combination of laptop, IEEE1394a, digital camera and radar speedometer, it realizes that the core software of the police car is using the advanced camera recognition module in China when it is parked on the side of the road during the mobile patrol or as a temporary port. The software uses true color sequence image processing and analysis methods to detect dynamic motion targets in real time, collect vehicle images, automatically identify license plates, compare blacklists, voice prompt alarms, data storage records, data import and export and comprehensive management when a vehicle is found to pass.