The Hardware Design Of Uncooled Lwir Imaging And Processing System Based On C6657 DSP

Uncooled infrared imaging system as its size is small, low power consumption, by the environmental impact of small advantages, has been widely used in military and civil fields. However, currently on the market common non refrigeration infrared imaging system, focus on the completion of infrared imaging detector, and ignore the complex image processing, such as object recognition, object tracking. The face of allweather and small UAV system, but also require infrared imaging equipment, small size, low power consumption, high performance. In order to meet the above requirements, this paper mainly for uncooled long wave infrared system, the hardware part carries out research main results are as follows:To break through the existing infrared imaging device image processing capacity bottleneck, this paper proposes a set of non refrigeration infrared imaging and processing in one of the complex system, completion of the work include: non refrigeration infrared detector drive and AFE circuit design, FPGA image pre processing electric circuit design, DSP image processing circuit design and power and interface circuit design. The system has the ability of real-time image processing, and can finish the image processing tasks according to the requirements of different applications.. In addition, facing the need for conventional application, this system can by changing the board structure, realize the conventional uncooled long wave infrared imaging system with the same function, so as to reduce the system power consumption, reduce the size of the equipment.In order to solve the control circuit design problems with complex DSP systems. This paper according to the TMS320C6657 proposed has a set of control system based on CPLD. The system through a single Max II CPLD to realize the control power on timing, boot configuration, output clock, reset logic, debugging interface of DSP system. The design not only enhances the system flexibility, and increase the controllability of the system, but also can reduce the complexity of control circuit, to reduce the cost of the control circuit.In order to guarantee the running of the DSP system, high-speed, efficient and stable, this paper designs a power supply and clock circuit for TMS320C6657. Power supply design uses the SmartReflex TI technology, effectively control the power consumption of DSP system. Clock design using TI’s CDCE62005 chip, system of DSP core, DDR controller and high speed SerDes provides a low noise, low jitter of highspeed differential clock.In order to meet the needs of infrared imaging equipment for different applications, this paper designs a rich communication interface. The interfaces of the design include: Gigabit Ethernet, LVDS, RS-422 and GPIO. Interfaces for different application in different fields of application, provide a sufficient condition for the secondary development of R & D personnel and lay a solid foundation for the wide application of the uncooled long wave infrared imaging and processing system.