Based On Sopc Technology, Handheld Digital Storage Oscilloscope Hardware Design

This thesis introduces a method to implement the hardware design of portable digital storage oscilloscope based on the System On Programmable Chip (SOPC in the following). After analyzing the system structure of oscilloscope and its working theory, we implanted the embedded-system processor into FPGA as the major circuit and constructed the interface module of the processor with the programmable logic resources and IP core in FPGA. Meanwhile, with the assistance of avalon line in FPGA, the controls can be realized on such peripheral as the analog path, high-speed A/D transformation, RAM, LCD monitor, keyboard, etc. Furthermore, this thesis has elaborated the whole framework design and specific design of circuit in respective module, among them are analog channels, digital control, resistance measurement, power supply, human-computer exchange, etc. Aiming at the practical applications done by oscillator system, the thesis makes an intensive discussion on its core technology, i.e. what critical effect the digital control based on SOPC has and how circuit design is realized in real and specific applications. Particularly, such aspects as data collection of oscillator, working pattern, triggering pattern, running pattern, control of time and frequency, display of LCD, how to make the most of FPGA and adaptation to CPU, etc. have been analyzed in detail. Moreover, an important problem in oscilloscope design has been settled that is about data collection and storage of periodic signal: guided by the circular FIFO design principal, FPGA can independently collect data. The hardware and corresponding software designed in this project better realize the following functions: both automatic and manual measures, storage of both wave and variables, resistance measures, etc. Thanks to SOPC's small chip size, easiness to compile, fast running speed, high steadiness, the developing software promises broad applications with its flexible design and short developing term. Thus, this construction is able to serve as a pleased example for the developers in portable equipment development.