Research Of Smart Car System Based On Image Acquisition

In today's world, accompanied by electronic information and intelligent techno-logy rapid development, more and more intelligent technology applied in the car, which reflects the security, reliability, convenience and operability. That prompted the world spare no effort to study intelligent vehicle technology and make it become hotspot. The system of smart is designed on the background of "Freescale" National Smart Car Tournament and the decision making system for self-driving and control algorithm is researched based on the hardware circuit.This article focused on getting road image information, processing and identi-fication, on the basis of effective control by reasonable and intelligent vehicle control algorithm, making it fast and accurately capture the road information.Road image information is acquired by the digital camera OV6620, and after acquired the road image, through effective image processing algorithms, it can process the original image to obtain the required final target image, and analysis of road information and traffic information extraction, and finally to identify the various paths. In addition, digital camera for OV6620 image output and single chip microcomputer XS128 acquisition speed don't match, this article designed image acquisition hardware circuit to accurately the aim of image collection, it can be useful for researching image acquisition for smart car.In the process of the smart cat racking the path, gear steering and speed control was extremely important. First of all, according to the need of moving control for smart car, the smart car can be researched under the steering gear and motor control. The beginning of this article adopted to traditional PID for the steering gear and motor control, during practice, traditional PID control on the steering gear can be well, but not so ideal for motor control, it mainly displayed in the balance of the stability and fast. After repeated experiments, at the last, this article on the steering control used PD, while taking PID and Bang_Bang control for the motor which can meet stability and fast requirements. Finally it realized the independent driving of the smart car.