Research On The Application Of ARM Processor In Digital Storage Oscillograph

With the technology progressing, the demand for measurement technique is higher and higher, so the traditional electronic oscillograph can hardly satisfy the need for real works. However, general application of ARM processor and development of embedded operating system provides new ideas for oscillograph design. According to the structure and feature of ARM processor, this paper designs a kind of digital storage oscillograph with HMS30C7202 (ARM) as its nucleus.First, by analyzing the function and performance index of digital storage oscillograph, this paper designs the whole scheme of dual-processor parallel processing, with ARM processor (data storage and display system) as nucleus, and combined with DSP (data acquisition system).Second, according to the whole scheme, the paper explains particularly the hardware design of data storage and display system and the communication interface design of data acquisition system.Third, in order to solve the transplanting problem of embedded Linux operating system in ARM processor, the process management technique and device driver design of embedded Linux operating system is investigated in this paper; Some relative device driver is designed contraposing specific hardware, so as to realize the communication function with data acquisition system, the operation of mouse and menu, and the function of data storage and display; besides, the graphic menu system is designed with Microwindows graphics system.Finally, this paper studies the interpolating algorithm in data processing, and gives the analysis comparison and simulation results of several interpolating methods.