TRICONEX 3503E 優(yōu)質(zhì)品特惠 返回列表頁

TRICONEX 3503E系統(tǒng)結(jié)構(gòu)與關(guān)鍵技術(shù) 

首*行功能分析，規(guī)劃出系統(tǒng)的體系結(jié)構(gòu)，列出各構(gòu)件模塊，然后進(jìn)行底層的具體設(shè)計(jì)，zui后完成系統(tǒng)的整合。測樁儀的結(jié)構(gòu)示意圖如圖1所示。

TRICONEX 3503E測樁儀設(shè)備包含的功能模塊有數(shù)據(jù)采集、數(shù)據(jù)處理（含數(shù)字濾波、分析處理、圖形顯示及報表打印）、數(shù)據(jù)存儲，外部還需配備擊錘及傳感器。測樁儀的信號輸入接口有3個，分別為速度傳感器、有源和無源加速度傳感器，它們通過模擬多路選擇器選定一路有效信號進(jìn)入模擬低通濾波器。

TRICONEX 3503E濾波后的信號通過采樣保持器后分為二路，一路進(jìn)入低精度的模/數(shù)轉(zhuǎn)換比較器，實(shí)時監(jiān)測信號的幅值范圍并報告給控制單元，由其產(chǎn)生出相應(yīng)的放大系數(shù)，對可編程放大器進(jìn)行設(shè)置。另一路首先通過可編程放大器進(jìn)行放大，然后進(jìn)入高精度模/數(shù)轉(zhuǎn)換比較器，zui后由控制單元設(shè)定放大系數(shù)并與放大信號同步存儲。數(shù)據(jù)采集部分的結(jié)構(gòu)框圖如圖2所示。

一個采樣周期后，TRICONEX 3503E控制單元向處理器ARM申請中斷，處理器讀取數(shù)據(jù)信息后完成數(shù)據(jù)的預(yù)處理分析和圖形顯示，通過USB接口向上位機(jī)傳輸數(shù)據(jù)，以獲得完整的數(shù)據(jù)分析和報表打印服務(wù)。數(shù)據(jù)處理和數(shù)據(jù)存儲部分的結(jié)構(gòu)框圖如圖3所示。

TRICONEX 3503E采樣過程中，數(shù)據(jù)的放大倍數(shù)與測量結(jié)果的同步時序控制是硬件需要解決的關(guān)鍵問題。數(shù)字濾波、數(shù)據(jù)分析計(jì)算和指數(shù)放大顯示是軟件需要解決的關(guān)鍵問題。

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