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 在每一个软件开发阶段的结束,正如srs和lld,我们可以重新评估软件的规模并调整我们的项目计划。
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 在每一个软件开发阶段的结束,正如srs和lld,我们可以重新评估软件的规模并调整我们的项目计划。
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信号的解调外围电路中采用迟滞比较电路实现波形的转化,这种方法简单、易实现,完全能够跟踪加载在420ma模拟信号上的数字控制信号;在软件设计中,完成了hart信号的采集编程、lcd显示编程、da转化控制编程和ieee-75432位浮点数的转化编程,ieee-75432位浮点数转化编程采用的是在最多满足24位整数位和16位小数位的基础上的一种简化算法。