【作者】 郝斌；

【导师】 王景中；

【作者基本信息】 北方工业大学 ， 信号与信息处理， 2007， 硕士

【摘要】 随着红外成像技术的不断发展，红外图像的数据量越来越大，成像速度也越来越快，这就要求红外成像系统应该具有实时采集，实时传送大批数据的能力。现有大部分数据传输接口(CAN总线、RS485等)速率较低，难以满足应用中对传输速率越来越高的要求，成为制约系统整体性能提高的一大瓶颈。IEEE1394总线是一种IEEE标准的外部高速串行总线，支持400Mb／s(1394b可实现800Mbps、1.6Gbps、3.2Gbps)的数据传输速率，而且支持点对点传输(Peer to Peer)、即插即用(Plug and Play)和同步异步传输，成为视频图像传输领域的事实标准总线。鉴于1394接口的高速传输特性，在充分掌握IEEE1394体系结构和通信模型及服务的基础上，本课题完成了基于1394的嵌入式红外成像系统接口硬件电路设计和软件设计，将1394接口加入到嵌入式红外成像系统中，实现了红外图像数据在1394设备端和PC主机端的实时传输。系统具有如下特点：(1)遵循IEEE1394协议规范，具有通用性；(2)红外成像设备即插即用，自动开启数据传输，无须人工干预；(3)微控制器实现1394芯片配置，编程灵活，易于调试；(4)数据传输完全由FPGA控制，实现较高传输速率。测试表明，系统设计完全遵循IEEE1394异步传输协议，可以在1394红外成像设备端与PC端实时传输红外图像，并实现了图像在PC端的实时显示。更多还原

【Abstract】 With the constant development of the technology of the formation of infrared image, the data amount of the single width infrared picture is bigger and bigger, the speed of the formation of image is faster and faster too, this requires that the formation system of infrared image should have the ability of gathering and conveying large quantities of data in real time. At present, the speed of most data transmission interface(CAN bus,RS485,etc.) is relatively low, it is difficult to satisfy the request with higher and higher transfer rate while using in application, which becomes a big bottleneck restraining the whole performance of the system from improving. IEEE1394 bus is a kind of external serial bus which supports high speed and follows IEEE standard, support the data transfer rate of 400Mb/s (1394b can realize 800Mbps , 1.6Gbps , 3.2Gbps ), and support Peer to Peer transmission , Plug and Play, Synchronous and Asynchronous transmission.In fact, IEEE1394 has become the standard bus in the field of video picture transmission.In view of the high-speed transmission characteristic of 1394 interface, the subject has offered one kind of scheme to put IEEE1394 interface into embedded system of formation of infrared image in order to realize the transmission of the picture datum in real time. On the basis of fully grasping IEEE1394 system structure and communication model and service, we have finished the system hardware circuit design and software design. The system has the following characteristics: (1)Following IEEE1394 specification, have commonability; (2)Supporting Plug and Play, the device starts data transmission automatically, needn’t have manual intervention; (3)MCU realizes 1394 chip configurations, programming is flexible , easy to debug; (4)FPGA fully controls data transmission, realizes higher transfer rate.Through testing, the scheme this subject designed realizes IEEE1394 asynchronous transmission specification, can transmit the picture data between 1394 device and PC in real time.更多还原