| The high-speed development of the computer technology has provided an effective way to process rapidly and largely information using modern digital signal processing technology, of which data acquisition technology acts as a key role. Because PC is widely used in scientific research and industrial field, developing a low-cost and high performance data acquisition system based on PC to satisfy the demand of digital information processing technology is necessary. High-speed data acquisition system based on PCI bus, which takes full advantage of the merit of the PCI bus, realizes the real-time sampling, transmission and storage of video signals, and supplies the convenience of real-time signals processing. It is necessary to develop the data acquisition devices based on PCI bus.The dissertation focuses on the subject of high-speed data acquisition system based on PCI bus. It includes:1.The whole design of data acquisition module. It analyses the principle and methods of waveform reconstruction of the data acquisition module under double A/D parallel time-interleaved real-time sampling mode and random sampling mode. It also illustrates the flow of the monitoring software and the application of FPGA technology in this design.2.Hardware design. It includes the design of trigger circuit, high speed clock circuit, A/D digital and data acquisition circuit, time inter-plug circuit and PCI interface circuit。3.The function debug of hardware and the result analysis. This part offers the correlative waveforms and data through debugging the hardware function under real-time sampling mode and random sampling mode, makes error analysis, finds the reasons that cause error, and gives some solutions to improve the performance of the circuits.4.The design of monitoring software. The program of the PCI interface driver and application software are discussed detailedly in this part. The application software accomplishes using Lab Windows/CVI. Lab Windows/CVI is the software platform of... |
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