The design of the decision support system for rice ecological balanced fertilization keeps to the life - period method of the software engineering , be designed phases , the summary design project of the whole system was brought forward by using the configurable analyses method , during decision support system design and realization , first analyze the flow of rice ecological balanced fertilization , and plot the database stream chart of rice ecological balanced fertilization , then adopt the data stream analysis method to bring forward sub - system function configuration table 水稻生態平衡施肥決策支持系統的設計遵循軟件工程的生命周期法,分階段設計開發,用結構化分析方法提出整個系統概要設計方案。在決策支持系統的設計與實現中,首先分析現行水稻生態平衡施肥的流程之后,繪制了決策支持系統的數據流圖,然后采用數據流分析法,提出子系統的功能結構表,最后利用vb6 . 0 、 access2000數據庫、多媒體技術等面向對象的編程工具,實現水稻生態平衡施肥決策支持系統的功能。
The system is compatible with the various different types a / d converters , carry out the functions of the vibration signal sampling , the saving of data file , the timely wave showing , the configuration table edit , the former data return and data analysis etc . the functions of signal analysis include the time field statistics analysis , the time field mutual analyzing , the frequency spectrum analyzing , the relevant analysis , the transmission function analysis , the demodulating analysis , and the short fourier transformation of the time and frequency field etc . experiments verify that the system carry out stably and credibility , various functions is achieved , has precise analyzing results , high calculating speed and high precision , the expected targets have been reached 該系統可以兼容多種不同型號的數據采集設備,實現了振動信號的采集、數據文件的存儲、波形的實時顯示、組態表編輯、歷史數據回放與數據分析等功能。系統的信號分析功能包括時域統計分析、時域相關分析、頻譜分析、相干分析、傳遞函數分析、解調分析以及時頻分析中的短時傅立葉變換等。經試驗驗證表明,系統運行穩定可靠,各項功能工作正常,數據分析結果準確、運算速度快、精度高,達到了預期設計目的。
In this paper , the hal - c conception is studied according to the project requirements , and describes the functions of the hal - c in software waveform implementation . then the issues implementing the hal - c on the specialized hardware processor are addressed , and the methods of managing the components on fpga and dsp by proxy components with the domain descriptor file and the configuration table are brought out . in the end , the validity of the proposed methods is tested 論文以sca體系結構驗證實現項目為背景,深入研究了sca專用硬件補充規范,重點分析了硬件抽象層連接的意義以及它在波形組件開發中的作用,提出了它在dsp / fpga上實現的方法、步驟;接著從sca波形應用的角度描述了硬件抽象層連接在波形開發中的作用,給出了代理組件如何通過域描述文件和配置表管理專用硬件處理器上算法組件的方法;最后對dsp / fpga上的硬件抽象層連接進行了驗證性測試。