multiple input by using wireless

[mf_hussin]

Hi,

My group members and me are try to develop a project which call wireless data acqusition.

Our main objective is to take are multiple measurement from substation using sensors and converter it to digital by usind ADC.

Then transmit it using wireless device which we try to use such as wifi or zigbee. After that receive it from develop Pc's and do some analysis example measure voltage and cureent. Then this VI's can be monitored and control from the remote Pc's.

I'm manage to do the the remote Pc's application, which I'm applied the web server technique. But my major concern is how to communicate with the routers device. Beside that how to transmit, received input and control the multiple devices from the substation during taking the measurement? 

Hope to hear from you guys.

MF Hussin,

"Knowledge Grow When We Share With Others"

[LeeM]

Hello,

  I have had a look at your post, as for communicating with the device, assuming it has the wireless card connected through Ethernet, you should be ok to transfer data and communicate through a TCP/IP connection. The hardware should be able to handle all this communication without affecting your device.

   It would be handy to know what your device is; the name, where it is from, if you have an instruction manual and does it have drivers configured?

  Also are you using LabVIEW? If so which version? And are the device drivers compatible with LabVIEW?

I look forward to your return post,

LeeM

[mf_hussin]

Hi LeEm,

Thank for you post, Our project is using LabView version 8.0. Actually I also have come across the TCP/IP method but to be honest I'm not quite understan it which I have found in this forum. If you dont mind here I attach the device that we might be you for this project. Can you give us an opinion about it either it compitable or not. Hope to get back from you and thank again from us.

MF hussin

Knowledge Grow When We Share With Others"

[LeeM]

MF Hussin,

From what I can understand of your device, there are three different interface boards you can use. There is the USB, RS-232(serial) and the Ethernet interfaces. Which one of these are you using?  You can use VISA in LabView to communicate through all of them but you can also use TCP to communicate with the Ethernet interface. All of these should be available in LabVIEW 8.0. There are some good examples about using VISA in the example finder under ‘hardware input and output’. Examples on TCP can be found under 'hardware input and output - Networking - TCP and UDP'.
There are also some good knowledge bases on VISA and communication with wireless sensor networks. I hope this proves useful to you. Please don't hesitate to post should you have any more problems.
LeeM

[mf_hussin]

Hi Leem,

Thanks alot, really appreciate it. I will have a try and let you know the outcome.

Hope to get help again from you.

Have nice weekend then.

Regards,

MF Hussin

"Knowledge Grow When We Share With Others"

[mfitzsimons]

Question, are you trying to develop this because you want to try it or do you need Wireless Sensors?  There are several solutions commercially available and are supported by NI.  Look at www.accsense.com or http://zone.ni.com/devzone/cda/tut/p/id/5435

[mf_hussin]

Hi,

I had look to the attachment that you provided to me. Actually, the wireless part that we going to be used is wifi and it will be connected with the ADC that we build by ourself. I'm going to used TCP/IP method to link it at the receiver side. The reason that I'm apply TCP/IP method is the input will be coming from 4 different measurement unit. It is possible to do the tcp/ip (VISA) or it is other method to do it?

MF Hussin,

[mf_hussin]

Hi Leem,

How I'm going to recognize that input data is coming from various sensor. I reckon to use the TCP/IP method. Can you advise me on this.

[LeeM]

MF Hussin,

The problem you will have is that LabVIEW will not know what sensor it is receiving from over the connection, so you will need to identify each sensor to LabVIEW before it can process any of the data it receives. To do this you will need to get the product manuals of your sensors to find a unique identification code that each one will have. You then need to request that this sensor sends this information before it transmits the data so that LabVIEW can identify the device that it is coming from. In LabVIEW you can then use a case structure to determine what to do in the case of each sensor transmitting its data.

LeeM
AE NIUK