transducer LVDT interface for medical application

[epaschalis]

I am working on a project in miomedical engineering in which i use as a transducer an LVDT for displacement measurements. I would like to ask if i can simply use an ADC circuit to feed the serial port with the measurements or i need to buy the DAQ systems available?
Also i have a Toshiba e400 PDA with pocket pc os and i want to use it with the new facility of labview7,1. The problem is that it does not have a PCMCIA slot for the NI interface available for PDA. The only port it has is the one for the SD memory, infrared, and the serial to USB. Is there any way i can use this PDA for operation as data loging and graphical representation of te values?

Thank you
epaschalis@hotmail.com

[Caroline Bright]

Hello,

To answer your first question, yes you can use the serial port without a DAQ system. You just need to have the proper drivers for what hardware you are using.
Second, you can use serial, isb, and infrared to communicate between your PDA and hardware. I am including links to our online Knowledge Bases that discuss these options in more detail.
http://digital.ni.com/public.nsf/websearch/11E3697FAC8A0A3786256D44007911BB?OpenDocument
http://digital.ni.com/public.nsf/websearch/15987C8CB752EAD786256DC20070B433?OpenDocument
http://forums.ni.com/ni/board/message?board.id=140&message.id=6288&requireLogin=False
http://forums.ni.com/ni/board/message?board.id=140&message.id=9153&requireLogin=False

Thanks,
Caroline
National Instruments

[epaschalis]

I would like to know the ideal setup for interfacing and measuring small displacements with an LVDT and using labview.
I am a Ph.D student so i need something low cost that will work and be able to reuse it to other projects. Also I want to implement the program to make it work also on my PDA.

The setup is: LVDT - PC - Data logging on pc - Data analysis (Real time)

Thank you.

epaschalis@hotmail.com

[Caroline Bright]

Hello,

I see you were able to find information on the hardware setup in another discussion forum posting: http://forums.ni.com/ni/board/message?board.id=170&message.id=97971&requireLogin=False

As far as the proper software setup, you can find LVDT examples in the Example Finder under the Help menu depending on your version of LabVIEW. Another good example for LVDT measurements can be found at:
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3D92556A4E034080020E74861&p_node=DZ52451

Thanks,
Caroline
National Instruments