Based On The Pci Bus, Large-capacity High-speed Video Storage System Development

With the technology development, photoelectricity theodolite tracking target and background are more and more complex, tracaking precision is more and more high ,so it need more rapid process speed and precision to photoelectricity sensor-photoelectricity measure equipment eye. Because computing exactitude contrail is completed after the event by shooting range photic measure equipment ,better quality track record to image collected by photoelectricity sensor become a very important work It exists the problem of data transmission rate low in the process of storing data to HD from high frame frequency and great array CCD camera. It develops high speed magnanimity digital collection memory system. The ideal project is joining every image equipments adapting high capability bus based on computer system structure. In fact, in order to realize image data real-time collecting and rapid storage, uniting PCI bus and SCSI bus which make system hold high speed data throughput provides sufficiency observation data.It anatomizes PCI bus and SCSI bus character, designs high speed data collection card based on PCI bus by thorough analyzing work process and application means of PCI protocol transition chip, designs collection storage system hard ware by the medium of two SCSI HD .It analyses Windows2000 kernel and WDM drive model, compiles drive program based on DMA, realizes data high speed collection. It analyses Windows2000 memory operation principle, adapts memory mapping and bus control technique, compiles drive program of storage data video image from PCI collection card to SCSI HD, accordingly develops high collection storage system.