Design And Realization Of Multi-Channel Data Collection Implement Based On ARM

Data collecting system as an auxiliary equipment has played an important role in the underwater acoustic technology. With the rapid development of the underwater acoustic engineering technology, the data collecting system is meeting higher and higher standards and requirements including the basic technical requests, as well as a flexible mode of operation and multiple methods of data storage.A set of multi-channel data collecting system is designed. It has a flexible mode of operation to achieve short-range and long-range control to avoid restriction from the distance. Besides, it has varieties ways of data storage. Data can be stored in PC, USB storage device, and FLASH chips to make sure the data collecting job cannot be limited by the storage media.The work of designing the hardware and software of the data collecting device is completed and the specific contents are as follows:The hardware of data collection device is designed which includes the signal conditioning circuit board, collecting board and bottom board. The signal conditioning circuit board achieves the amplification, filtering and AD conversion of the input signal by designing the analog circuits. Based on the signal collection circuit board using S3C2440 as a core chip with FPGA and FLASH part, the Ethernet and USB interface is designed to ensure that data collection, transmission and storage performance is achieved. The bottom board accomplishes the connection of the two boards above and the power supply and the input interface of signal for data collection device.The program of VC++for displaying and controlling is designed to achieve the function of parameter setting and collecting control. The FPGA program is also given to actualize the performance of the controller of the AD chip data conversion, the FLASH access to data and the data transmission with S3C2440. As well, the ARM embedded Linux system applications and drivers is programmed to make an accomplishment of data transmission with FPGA, data storage to a USB device through the specific interface, and the communication with the displaying and controlling subsystem through the Ethernet.In this paper, designing and implementation of data collection device is tested to verify the rationality, feasibility and the practicality of the system. Finally, the thesis is summarized hoping its extensions in the future for further research.