| A measurements of the well depth and indicator diagram are studied in the dissertation. The core of the embeded system is a 80C196KC MCU (micro-chip computer).The system's operation principle, control idea, functions and realization of each component are discussed in detail. The methods of a minimum operation system of MCU, the principle circuit of signal adjusting, data collecting, keyboard controlling, LED displaying, serial communication, flash memory driving, diagram printing etc. are proposed and realized.In the designation of system software, the author applies the embed real-time operating system uc/os-II to enhance the system's stability. On basis of software engineering, adopts the modular designing method, and makes full use of the functions what the MCU offers, such as A/D function, interrupt function, PWM function, and software timer function. As a result, the following subroutines are programmed: keyboard scanning, A/D sample, LCD displaying, data computing and dealing, serial communication, diagram printing and control modules. These designs not only simplified the program structure, but also improved real-time performance, security, and precision of the system. Moreover, the time of debug the system's software is saved. The design aim is achieved through the testing of the prototype performance.Eventually, the problems, solutions and the personnel experience in designing and debugging are summarized. The application prospect of the system is presented. |
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