looking for help

Professional Engineer & PE Exam Forum

Help Support Professional Engineer & PE Exam Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Balshaj

Member
Joined
Feb 21, 2012
Messages
5
Reaction score
0
Hi, im looking for help from an electrical engi......where would be a good place to find one i want to make something but dont have idea of where to get the parts and if coding is required on some of the pieces....if anyone knows where to find someone to help i would appriciate it....im in connecticut

 
Electrical engineering have a few branches you need to specify what do you want. Some probably can help you others cant depending on what you need. Some are good at power...some are good in electronics, some in controls, some in comunications and some in computers... I dont think you can find an engineer who is good in everything...well you can but some have their specialties.

 
first thanks for replying....what i want to do is have a wireless pressure sensor that relays the numbers on a scren is all....and im not even sure where to find some parts....guess Google Sucks is my friend on this one lol

 
I've never encountered an actual sensor of that type that had wireless built in. What you can do, is run the analog signal of the pressure transducer to a wireless transmitter/receiver pair that would accomplish what you are trying to do. Range would be dependent on transmit power and you would need some interface that could interpret the analog data and convert it to a useful number (i.e. PSI, BAR, etc.). I can provide more information on this since I've used a similar setup with an analog X-Y axis inclinometer.

The data could then be input to a PLC and formatted correctly for display on a computer or possibly a PanelView remote display.

 
Last edited by a moderator:
yes i have found some pressure sensors online that say their wireless....but even if i had to put an antena i dont think it would take that much space. And yes if you can please provide me your inclinometer information i would appriciate it thanks. Also thats wat i wanted it to be wireless so iit can output to a screen panel that would he about 2 feet away at maximum. Honestly im surprise this stuff isnt out there already seeing how it could be used for various reasons.

 
yes i have found some pressure sensors online that say their wireless....
I would very much like to see what you have found from a reliable commercial vendor.

Honestly im surprise this stuff isnt out there already seeing how it could be used for various reasons.
One of the many reasons that wireless sensors of this type are not available is signal integrity. On critical applications where processes are dependent upon various analog data, there can't be any interruption or in this case "interference" with the signal that would potentially cause data loss.

 
I had a similar application a while back transmitting the output of an accelerometer to a receiver 100' or so away. I guess the first thing I would ask is are you looking for a quick and dirty prototype for proff of concept or something that needs to be industrial grade right off? There are lots of suppliers but for a quick demo, I would look at the Microchip PIC type demo kits as they are pretty fast to get up and running. You could take the output from the pressure sensor to a simple A/D and then use that as an input byte to the transmitter. I'm not endorsing Microchip in any way but they offer decent application support and you may be able to get some help from some friends. Another thing I would look up is the wireless TPM or tire pressure monitoring system as you may be able to get something up there quickly.

If this is a more "mission critical" application, e.g. pressure sensor on a nuclear reactor (just kidding but you get the idea), you really need a more industrial strength solution with error correction, retry, fail safe code etc.

 
first of thanks guys for the replies.....

fox3..... i was not able to find the same site..no surprise there but u had me thinking and it finally downed on my slow brain that all i really have to do is rip the computer of a wieght scale and use it for my project as well as add a wifi capability to it, which im sure its not undoable. And yes i want this to be password protected on so only those items are paired so wifi or blutooth should work fine.

Dk pe....thanks for ur input ill defenetly check out microchip and tpm before i move forward.....and no its not that mission critical as a nuklear power plant lol....but i see wat ur saying....but for me this is going to be a simple counter really..sooo shouldnt be too bad.

 
DKPE....the TPM Sensor is also a great idea but i need to monitor the pressure or force on a spring so seeing how this is air oriented ik not sure if it would work for me....and the microchip products like miwi look interesting gonna check those out.

 
Back
Top