The Design Of Video Surveillance Terminal Hardware System For Vehicle

In recent years, with the rapid development of our country’s transportationconstruction, the number of car has increased dramatically, which puts pressure onurban traffic. Therefore setting up a set of perfect vehicle video surveillance system isparticularly important, which not only benefits the efficient management of urbanpublic traffic system, but also enhances public traffic safety, convenience, and highefficiency.This paper gives a deep research on the embedded system design and DaVincitechnology, analyzes the functional requirements of the system, puts forward a systemsolution of vehicle monitoring terminal which is based on TMS320DM365processor.The paper adopts modular design, divides the system into differentfunctional modules, and gives a detail introduction of chip selection and circuitschematic design for each function module. Then the paper discusses the design ofPCB layout and wiring work, and the way to ensure the signal integrity and resistanceto electromagnetic interference solution, and puts emphasis on DDR high-speedsignal difference distribution and isometric wiring made a thorough discussion andanalysis. At the same time the paper uses JTAG debugger on the system hardwareplatform for debugging, introduces the power module, reset circuit and DDR moduledebugging process. Finally, the paper completes the portation of Uboot and embeddedoperation system.The result of hardware platform test shows that all modules can function properlywith stable performance. The terminal system can provide four-channel video inputinterface, LCD display and USB interface, CANBUS interface, etc, also can supportthe3G network transmission, which can meet the demand of real-time monitoring thevehicle surveillance terminal.