怎么捕获比较XY图的数据

我的最终目标是：我将一台已知好的笔记本电脑的功耗与时间进行比较。
这是POST期间的功耗。我想记录好笔记本电脑的时间/电流并将它们绘制成图形（XY），然后用坏的笔记本电脑重新运行程序并将图形相互比较。我看到它的方式我需要
做一些事情：1。
当我的RS232连接电源的电流增加超过0.1A（简易）2时，启动图表。
将好的笔记本电脑的数据记录到文件中？
阵列？
收藏家？3。
将坏笔记本电脑与好的笔记本电脑相对照。
这也很棘手，因为第二台笔记本电脑的采样时间不同吗？如果有人能指出我正确的方向，我将非常感激.Cheers-Al



     以下为原文

  My ultimate goal is this: I am comparing the power consumption vs time of a known good laptop against a bad laptop. This is power consumption during POST.

I want to log the times/current of the good laptop and graph them (XY), then run the program again with a bad laptop and compare the graphs against each other.

The way I see it I need to do a few things:

1. Start the graph when the power of my RS232 connected power supply increases in current over 0.1A (Easy)
2. Log the data of the good laptop, to a file? array? collector?
3. Plot the bad laptop against the good laptop. This is also tricky because wont the sampling times for the second laptop be different?

If someone can point me in the right direction id be very grateful.
Cheers

-Al