At the end of every software development phase , such as srs and lld , we should re - estimate our software size and adjust our project plan 在每一個軟件開發(fā)階段的結束,正如srs和lld ,我們可以重新評估軟件的規(guī)模并調整我們的項目計劃。
At the end of every software development phase , such as srs and lld [ / b ] , we should re - estimate our software size and adjust our project plan 在每一個軟件開發(fā)階段的結束,正如srs和lld ,我們可以重新評估軟件的規(guī)模并調整我們的項目計劃。
This method is especially simple and easy to implement . furthermore , it fully capable of tracking digital control signals carried by 4 ~ 20ma analog signals ; during software development phase , we have completed signal collecting , lcd displaying , d / a converting of hart signal and ieee - 754 32 bit float point conversion . we used a simplified method in ieee - 754 32 bit compatible float point conversion based on the 24 bit integer and 16 bit decimal computation 在hart信號的解調外圍電路中采用遲滯比較電路實現波形的轉化,這種方法簡單、易實現,完全能夠跟蹤加載在4 20ma模擬信號上的數字控制信號;在軟件設計中,完成了hart信號的采集編程、 lcd顯示編程、 d a轉化控制編程和ieee - 75432位浮點數的轉化編程, ieee - 75432位浮點數轉化編程采用的是在最多滿足24位整數位和16位小數位的基礎上的一種簡化算法。