real time visualization

[dalelmaghrebi]

hi
i need to visualize the outputs of my system's sensors.. data are stored in an excel file from a visual c++ program.
i've already tried to use VB but i have a problem. to run the main program, i must close the excel file and then VB aplication cannot detect modifications. as a result i have to re-attach the excel file and the graphic related to this file... besides, i need a dynamic(in real time)visualization..
any help..
thank you in advance

 

[MichaelRed]

I would just be guessing, but the attempt to crosspollinate the process is not going to achieve most definitions of 'real time'. I have done some considerable work in an arena which condsidered real time to be presentation of any /all altered states in less than 250 milli-seconds. This was -at the time- certainly not in the realm of reality for the "PC" world, but many of the 'lessons learned' are applicable to most systems. One -in particular- was that all concerned systems (or applications)needed to be able to concurrently access the common data used to drive the presentation (as well as the inputs which might cause any of the presentation data to change). You are almost certainly NOT going to achieve this w/ seperate applications written in different languages using anything resembling hard disc access to write / read the data.

In some long forgotten time, there were 'device' drivers which could be set up to set aside and reference memory as a Virtual disc. Something like this may still be available through specialty shops, and it might be A PIECE of the soloution, since it would eliminate the hardware latency / timing and permit the seperate processes to each access the data.

MichaelRed
m.red@att.net

There is never time to do it right but there is always time to do it over