人機接口設備——開關類部件的仿真實現

論文字數:10019,頁數:24

摘  要
本文先簡要介紹了仿真的基本理論，現狀及發展前景，然后說明本畢業設計的研究目的和意義。開關類部件的仿真是為了在虛擬的接口實驗平臺上，以計算機軟件模擬實際環境進行科學實驗。本設計中主要研究的是機械類開關，包括單刀單擲開關和單刀雙擲開關及鍵盤開關。詳細分析了這些開關的機械物理特性，特別是開關在開、合過程中的瞬態響應特點。利用MFC類庫和Visual C++提供的高度可視的應用程序開發工具對開關類部件進行模擬仿真設計：首先由虛擬實驗平臺統一設計的器件基類，派生出對應的開關器件類，通過重載基類中的一些虛函數，仿真實現開關的相應功能特性，包括對輸入輸出信號的響應及鼠標響應模擬開關動作，不同的執行動作，會使開關有不同的狀態，同時也會改變管腳信息。再將器件類封裝成DLL模塊，以便在實驗時，通過特定的接口調用這些器件功能。根據開關的種類將每個種類寫成獨立的DLL模塊。對于單刀單擲開關和單刀雙擲開關，經測試，基本達到設計目標，但對于鍵盤類開關，由于某些技術上和知識上的不足，在本設計中沒有成功設計出相應的DLL模塊，有待以后改進。
最后對設計研究工作進行了總結，指出了研究上的不足及改進方向，說明了在本次設計中的收獲。

關鍵詞： 開關的種類；開關的特點；時間響應；仿真實現

Man-machine interface equipment--Switch parts simulation realization
Abstract
The thesis introduced basic theories, current situation and development prospect of simulation briefly first，then explained research purpose and meaning of this graduation project. Switch emulation is to carry on scientific experiment with simulating the real environment by computer software, at the virtual interface experiment platform. In the thesis, the main research topic is mechanical switch, including SPST (Single Pole Single Throw), SPDT (Single Pole Double Throw) and keyboard switch. It analyzed the mechanical physical characteristics of the switches, especially the transient state in the course of holding, shutting of the switch. Exploiting the developing tools for high degree visualized application provided by MFC and Visual C, it simulated the design of switch. At first, it has to design the basic device class by virtual experiment platform, and derive the relative switch device class. With deriving some virtual functions of basic class, the relative function characteristics of switch can be simulated, including the response of input and output signal, mouse response to emulate different switch activities which produce different switch status, and change the pin information simultaneously. Second, the device class is packed into DLL module for using the functions of the device by particular interface in experiments. According to the type of switch, each switch can be packed as an independent DLL module. For SPST and SPDT switches, through testing, they reach the design object basically. But for the keyboard switch, because of the deficiency on some technology and on knowledge, it has not succeeded in designing corresponding DLL module in this thesis, which needs improving in the future.
Finally, the thesis summarized the research work, pointed out the study deficiency and the improving direction, and explained the harvest in the design.
Key words: Switch type; Switch characteristics; Time responds; Emulation realization

目   錄

1 引言 1
1.1 設計背景 1
1.2 計算機仿真 1
1.2.1 計算機仿真的發展 1
1.2.2 計算機仿真的現狀 2
1.3 設計目的及意義 3
1.4 預期成果 3
2 設計知識介紹 3
2.2 虛擬實驗平臺 3
2.2 基類和派生類 3
3 開關類部件的仿真方案設計 4
3.1 開發工具的選擇 4
3.2 模塊的劃分原則 4
3.3 模塊的劃分 5
3.4 開關的種類及特性 5
3.4.1 開關的種類 5
3.4.2 開關的主要參數 5
3.4.3 瞬態響應特點 6
4 開關類部件的仿真實現 7
4.1 程序主要功能介紹 7
4.2 程序設計結構介紹 7
4.2.1 開關類器件實現功能框圖 7
4.2.2 入口函數 8
4.2.3 輸出接口函數 8
4.2.4 主要功能函數介紹 9
4.3 單刀單擲開關功能實現 10
4.3.1 工程創建 10
4.3.2 添加基類 11
4.3.3 創建功能函數 12
4.3.4 單刀單擲開關代碼實現 12
4.4 單刀雙擲開關的功能實現 14
4.5 鍵盤開關的主要功能 15
4.6 功能測試： 15
結    論 17
參考文獻 17
致    謝 18
聲    明 19