The Design And Implementation Of Image Acquisition System For Staying Vehicles

With the development of our country's economy,the ownership of the car is growing rapidly;as a result the problem of the safety of the car is becoming more and more serious.The vehicles are subjected to vandalism sometimes.Although there are many kinds of vehicle monitoring systems,the majority of which can only monitor the vehicle which is driving or stolen,and can't meet the need of the staying vehicles. Therefore,based on this situation,it is necessary to design a monitoring system which can enhance the safety of staying vehicles by acquiring images.Based on the analysis of the background and the development status of the image monitoring system,the writer designs a system that can acquire images.With high performance embedded microprocessor PXA270,the system selects Windows CE 5.0 as the embedded operating system,and detects whether there is somebody nearby using the Passive Infrared and sound detection as the input.If there is singnal the system begins to acquire images by USB camera,and stores them on the SD card as BMP file form.In order to inform the owner in time,the system can send the image to the owner by MMS.Firstly,the paper analyses and designs the whole scheme of hardware and software. The system uses EELIOD Multifunctional Embedded board,designs the external interfaces and the power conversion,and selects AOMG gold eye camera,Kingston 2G SD card and WAVECOM Q2606B communication module.Secondly,according to the need of system,based on customizing the Windows CE 5.0,the writer uses Embedded Visual C++ lanuage that realizes to programming the USB camera stream interface driver,acquire the images,store images,operate SD card and send data.Finally,the thesis analyses the selection and compression of the images,studies the technology of sending MMS and the power management.